/* ==========================================================================
   Kuplushki.ru — Liquid Glass Design System v2
   True volumetric 3D glass with prismatic reflections
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
    /* Primary palette */
    --color-primary: #3B5BDB;
    --color-primary-dark: #364FC7;
    --color-primary-light: #5C7CFA;
    --color-primary-bg: rgba(59, 91, 219, 0.06);
    --color-primary-50: rgba(59, 91, 219, 0.04);
    --color-primary-100: rgba(59, 91, 219, 0.08);
    --color-primary-700: #364FC7;
    --color-primary-800: #2B44A8;
    --color-primary-900: #1E3A8A;

    /* Accent */
    --color-accent: #FF6B6B;
    --color-accent-dark: #ee5a5a;
    --color-accent-light: #ff8787;

    /* Semantic colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    /* Neutral palette */
    --color-text: #1a1a2e;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;
    --color-border: rgba(0, 0, 0, 0.06);
    --color-border-light: rgba(0, 0, 0, 0.03);
    --color-bg: #e4e6ec;
    --color-bg-white: #ffffff;
    --color-bg-dark: #0f172a;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;

    /* Borders — rounder for glass look */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 4px 0 rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 24px 48px rgba(0, 0, 0, 0.12);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Layout */
    --container-max: 1200px;
    --header-height: 64px;
    --sidebar-width: 300px;

    /* ============== GLASS TOKENS ============== */
    /* The 3D glass look: thick borders, heavy inner glow, sharp shadows */
    --glass-bg: linear-gradient(135deg,
            rgba(255, 255, 255, 0.55) 0%,
            rgba(255, 255, 255, 0.35) 40%,
            rgba(240, 245, 255, 0.3) 60%,
            rgba(255, 255, 255, 0.45) 100%);
    --glass-border-width: 1.5px;
    --glass-border-color: rgba(255, 255, 255, 0.75);

    /* Multi-layered shadow for 3D depth */
    --glass-shadow:
        0 2px 4px rgba(0, 0, 0, 0.04),
        0 8px 16px rgba(0, 0, 0, 0.06),
        0 16px 32px rgba(0, 0, 0, 0.04);

    /* Inner glow — thick bright top edge + subtle dark bottom */
    --glass-inner-glow:
        inset 0 2px 4px rgba(255, 255, 255, 0.9),
        inset 0 0 20px rgba(255, 255, 255, 0.25),
        inset 0 -2px 6px rgba(0, 0, 0, 0.04);

    /* Hover */
    --glass-shadow-hover:
        0 4px 8px rgba(0, 0, 0, 0.06),
        0 12px 24px rgba(0, 0, 0, 0.08),
        0 24px 48px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] {
    /* Primary palette adjustments for dark mode */
    --color-primary-bg: rgba(59, 91, 219, 0.15);
    --color-primary-50: rgba(59, 91, 219, 0.1);
    --color-primary-100: rgba(59, 91, 219, 0.2);

    /* Neutral palette - Dark */
    --color-text: #ffffff;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    --color-border: rgba(255, 255, 255, 0.15);
    --color-border-light: rgba(255, 255, 255, 0.08);
    --color-bg: #0b1121;
    --color-bg-white: #1e293b;
    --color-bg-dark: #020617;

    /* ============== DARK GLASS TOKENS ============== */
    --glass-bg: linear-gradient(135deg,
            rgba(30, 41, 59, 0.75) 0%,
            rgba(15, 23, 42, 0.65) 40%,
            rgba(30, 58, 138, 0.25) 60%,
            rgba(30, 41, 59, 0.6) 100%);
    --glass-border-color: rgba(100, 80, 160, 0.15);

    /* Shadow adjustments for dark mode */
    --glass-shadow:
        0 4px 12px rgba(0, 0, 0, 0.25),
        0 12px 24px rgba(0, 0, 0, 0.35),
        0 24px 48px rgba(0, 0, 0, 0.25);

    /* Inner glow - thinner and subdued for dark mode */
    --glass-inner-glow:
        inset 0 1px 2px rgba(120, 100, 200, 0.12),
        inset 0 0 12px rgba(100, 80, 180, 0.04),
        inset 0 -1px 4px rgba(0, 0, 0, 0.2);

    /* Hover */
    --glass-shadow-hover:
        0 8px 16px rgba(0, 0, 0, 0.35),
        0 16px 32px rgba(0, 0, 0, 0.45),
        0 32px 64px rgba(0, 0, 0, 0.3);
}


/* --------------------------------------------------------------------------
   Reset & Base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    position: relative;
    display: flex;
    flex-direction: column;
}

/* Ambient light spots on body */
body::before {
    content: '';
    position: fixed;
    top: -200px;
    right: -100px;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(92, 124, 250, 0.1) 0%, transparent 65%);
    border-radius: 50%;
    z-index: -1;
    pointer-events: none;
}

body::after {
    content: '';
    position: fixed;
    bottom: -200px;
    left: -100px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 130, 170, 0.08) 0%, transparent 65%);
    border-radius: 50%;
    z-index: -1;
    pointer-events: none;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text);
}

h1 {
    font-size: var(--font-size-4xl);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}


/* --------------------------------------------------------------------------
   GLASS TOGGLE — 3D pill-shaped theme switch
   -------------------------------------------------------------------------- */
.glass-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.glass-toggle input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

.glass-toggle__track {
    position: relative;
    width: 56px;
    height: 30px;
    border-radius: 999px;
    background: linear-gradient(135deg,
            rgba(180, 160, 220, 0.4) 0%,
            rgba(120, 130, 200, 0.35) 30%,
            rgba(200, 180, 230, 0.3) 60%,
            rgba(160, 140, 210, 0.4) 100%);
    border: 1.5px solid rgba(255, 255, 255, 0.6);
    box-shadow:
        0 4px 16px rgba(100, 80, 160, 0.25),
        0 2px 6px rgba(0, 0, 0, 0.1),
        inset 0 2px 4px rgba(255, 255, 255, 0.7),
        inset 0 -2px 4px rgba(100, 60, 140, 0.15),
        inset 0 0 12px rgba(180, 150, 220, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    overflow: hidden;
}

/* Iridescent shimmer overlay */
.glass-toggle__track::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg,
            rgba(180, 130, 255, 0.15) 0%,
            rgba(100, 160, 255, 0.1) 30%,
            transparent 50%,
            rgba(255, 140, 200, 0.12) 70%,
            rgba(200, 120, 255, 0.1) 100%);
    pointer-events: none;
    transition: opacity 0.4s ease;
}

/* Dark track when in dark mode (checked) */
.glass-toggle input:checked+.glass-toggle__track {
    background: linear-gradient(135deg,
            rgba(20, 15, 40, 0.9) 0%,
            rgba(10, 8, 25, 0.95) 40%,
            rgba(25, 15, 50, 0.85) 100%);
    border-color: rgba(160, 120, 255, 0.3);
    box-shadow:
        0 4px 20px rgba(120, 80, 200, 0.35),
        0 2px 8px rgba(0, 0, 0, 0.4),
        inset 0 2px 4px rgba(255, 255, 255, 0.08),
        inset 0 -2px 4px rgba(0, 0, 0, 0.6),
        inset 0 0 16px rgba(130, 80, 220, 0.15);
}

.glass-toggle input:checked+.glass-toggle__track::before {
    background: linear-gradient(135deg,
            rgba(140, 80, 255, 0.2) 0%,
            rgba(80, 120, 255, 0.1) 30%,
            transparent 50%,
            rgba(255, 80, 180, 0.15) 70%,
            rgba(180, 80, 255, 0.12) 100%);
}

/* The knob */
.glass-toggle__knob {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: linear-gradient(135deg,
            #ffffff 0%,
            #f0f0f5 40%,
            #e8e8f0 100%);
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.2),
        0 1px 3px rgba(0, 0, 0, 0.15),
        inset 0 2px 3px rgba(255, 255, 255, 0.9),
        inset 0 -1px 2px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.glass-toggle input:checked+.glass-toggle__track .glass-toggle__knob {
    left: calc(100% - 25px);
    background: linear-gradient(135deg,
            #f0eef5 0%,
            #e0ddf0 40%,
            #d5d0ea 100%);
    box-shadow:
        0 2px 10px rgba(130, 80, 220, 0.3),
        0 1px 4px rgba(0, 0, 0, 0.3),
        inset 0 2px 3px rgba(255, 255, 255, 0.7),
        inset 0 -1px 2px rgba(0, 0, 0, 0.15);
}

/* Sun/Moon icons inside knob */
.glass-toggle__icon {
    position: absolute;
    font-size: 11px;
    transition: all 0.35s ease;
}

.glass-toggle__icon--sun {
    color: #f59e0b;
    opacity: 0;
    transform: rotate(-90deg) scale(0);
}

.glass-toggle__icon--moon {
    color: #6366f1;
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.glass-toggle input:checked+.glass-toggle__track .glass-toggle__icon--sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.glass-toggle input:checked+.glass-toggle__track .glass-toggle__icon--moon {
    opacity: 0;
    transform: rotate(90deg) scale(0);
}

/* Hover glow */
.glass-toggle:hover .glass-toggle__track {
    box-shadow:
        0 6px 24px rgba(120, 80, 200, 0.35),
        0 2px 8px rgba(0, 0, 0, 0.12),
        inset 0 2px 4px rgba(255, 255, 255, 0.8),
        inset 0 -2px 4px rgba(100, 60, 140, 0.2),
        inset 0 0 16px rgba(180, 150, 220, 0.3);
}

.glass-toggle:hover .glass-toggle input:checked+.glass-toggle__track {
    box-shadow:
        0 6px 24px rgba(130, 80, 220, 0.5),
        0 2px 8px rgba(0, 0, 0, 0.5),
        inset 0 2px 4px rgba(255, 255, 255, 0.1),
        inset 0 -2px 4px rgba(0, 0, 0, 0.7),
        inset 0 0 20px rgba(140, 80, 230, 0.2);
}

/* Active press effect */
.glass-toggle:active .glass-toggle__knob {
    width: 26px;
}

.glass-toggle input:checked+.glass-toggle__track:active .glass-toggle__knob {
    left: calc(100% - 29px);
}

/* --------------------------------------------------------------------------
   GLASS SURFACE — the core 3D glass mixin
   Applied to cards, widgets, calc-card, tool-card
   -------------------------------------------------------------------------- */
.glass-surface,
.card,
.widget,
.calc-card,
.tool-card,
.stats {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    border: var(--glass-border-width) solid var(--glass-border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow), var(--glass-inner-glow);
    overflow: hidden;
    transition: all var(--transition-base);
}

/* Prismatic iridescent reflection overlay */
.glass-surface::after,
.card::after,
.widget::after,
.calc-card::after,
.tool-card::after,
.stats::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        linear-gradient(135deg,
            transparent 0%,
            rgba(255, 220, 255, 0.08) 20%,
            rgba(180, 210, 255, 0.12) 35%,
            rgba(200, 255, 230, 0.06) 50%,
            rgba(255, 220, 200, 0.08) 65%,
            rgba(200, 200, 255, 0.1) 80%,
            transparent 100%);
    pointer-events: none;
    z-index: 0;
}

/* Thick glass edge highlight (top + left bright line) */
.glass-surface::before,
.card::before,
.widget::before,
.calc-card::before,
.tool-card::before,
.stats::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1.5px solid transparent;
    border-top-color: rgba(255, 255, 255, 0.85);
    border-left-color: rgba(255, 255, 255, 0.5);
    border-right-color: rgba(255, 255, 255, 0.15);
    border-bottom-color: rgba(0, 0, 0, 0.03);
    pointer-events: none;
    z-index: 1;
}

/* Ensure content stays above overlays */
.glass-surface>*,
.card>*,
.widget>*,
.calc-card>*,
.tool-card>* {
    position: relative;
    z-index: 2;
}

/* Hover — lift up with stronger shadow */
.card:hover,
.calc-card:hover,
.tool-card:hover {
    box-shadow: var(--glass-shadow-hover), var(--glass-inner-glow);
}


/* --------------------------------------------------------------------------
   Container
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-4);
}


/* --------------------------------------------------------------------------
   Header — Frosted Glass Navbar
   -------------------------------------------------------------------------- */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: linear-gradient(180deg, rgba(228, 230, 236, 0.85) 0%, rgba(228, 230, 236, 0.7) 100%);
    backdrop-filter: blur(32px) saturate(1.5);
    -webkit-backdrop-filter: blur(32px) saturate(1.5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.6);
    height: var(--header-height);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.5),
        0 4px 16px rgba(0, 0, 0, 0.06);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: var(--space-4);
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    flex-shrink: 0;
}

.header__logo-sphere {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
}

.header__logo-text {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.header__nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 8px 18px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
    white-space: nowrap;
    border: 1px solid rgba(255, 255, 255, 0.45);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.15));
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow:
        0 1px 4px rgba(0, 0, 0, 0.04),
        inset 0 1px 1px rgba(255, 255, 255, 0.7);
}

.header__nav-link:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.30));
    border-color: rgba(255, 255, 255, 0.75);
    color: var(--color-primary);
    box-shadow:
        0 2px 8px rgba(59, 91, 219, 0.10),
        inset 0 1px 2px rgba(255, 255, 255, 0.85);
    transform: translateY(-1px);
}

.header__nav-link.active {
    background: linear-gradient(135deg, rgba(59, 91, 219, 0.12), rgba(120, 100, 200, 0.08));
    color: var(--color-primary);
    border-color: rgba(59, 91, 219, 0.25);
    box-shadow:
        0 2px 10px rgba(59, 91, 219, 0.12),
        inset 0 1px 2px rgba(255, 255, 255, 0.6),
        inset 0 -1px 2px rgba(59, 91, 219, 0.06);
    font-weight: 600;
}

.header__nav-dropdown {
    position: relative;
}

/* Button reset so it looks like a nav-link */
button.header__nav-link {
    cursor: pointer;
    font-family: inherit;
}

/* Rotate chevron when dropdown is open */
.header__nav-dropdown.show .fa-chevron-down {
    transform: rotate(180deg);
}

.header__dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    padding-top: 10px;
    min-width: 240px;
    z-index: 100;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.95) 0%,
            rgba(245, 248, 255, 0.92) 50%,
            rgba(240, 245, 255, 0.90) 100%);
    background-origin: content-box;
    background-clip: content-box;
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    border-radius: 0 0 16px 16px;
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.12),
        0 2px 8px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

/* Inner glass highlight */
.header__dropdown-menu::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow:
        inset 0 1px 3px rgba(255, 255, 255, 0.4),
        inset 0 -1px 3px rgba(0, 0, 0, 0.03);
    pointer-events: none;
    z-index: 1;
}

.header__nav-dropdown:hover .header__dropdown-menu,
.header__nav-dropdown.show .header__dropdown-menu {
    display: block;
}

.header__dropdown-menu a {
    display: block;
    position: relative;
    z-index: 2;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.header__dropdown-menu a:hover {
    background: rgba(59, 91, 219, 0.08);
    color: var(--color-primary);
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

/* User dropdown */
.header__user-menu {
    position: relative;
}

.header__user-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 8px 16px;
    border: 1.5px solid rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.3));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text);
    transition: all var(--transition-base);
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.06),
        inset 0 1px 2px rgba(255, 255, 255, 0.8),
        inset 0 -1px 2px rgba(0, 0, 0, 0.03);
}

.header__user-btn:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.45));
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.08),
        inset 0 1px 2px rgba(255, 255, 255, 0.9),
        inset 0 -1px 2px rgba(0, 0, 0, 0.04);
}

.header__user-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.92) 0%,
            rgba(250, 252, 255, 0.90) 40%,
            rgba(245, 248, 255, 0.88) 100%);
    backdrop-filter: blur(40px) saturate(1.6);
    -webkit-backdrop-filter: blur(40px) saturate(1.6);
    border: 1.5px solid rgba(255, 255, 255, 0.85);
    border-radius: 20px;
    box-shadow:
        0 4px 8px rgba(0, 0, 0, 0.06),
        0 12px 28px rgba(0, 0, 0, 0.10),
        0 24px 48px rgba(0, 0, 0, 0.06),
        inset 0 2px 4px rgba(255, 255, 255, 0.95),
        inset 0 0 16px rgba(255, 255, 255, 0.3),
        inset 0 -2px 6px rgba(0, 0, 0, 0.04);
    padding: var(--space-2);
    min-width: 180px;
    z-index: 100;
    overflow: hidden;
}

/* Directional glass-edge highlight */
.header__user-dropdown::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1.5px solid transparent;
    border-top-color: rgba(255, 255, 255, 0.95);
    border-left-color: rgba(255, 255, 255, 0.6);
    border-right-color: rgba(255, 255, 255, 0.15);
    border-bottom-color: rgba(0, 0, 0, 0.04);
    pointer-events: none;
    z-index: 1;
}

/* Prismatic iridescent overlay */
.header__user-dropdown::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        linear-gradient(135deg,
            transparent 0%,
            rgba(255, 220, 255, 0.06) 20%,
            rgba(180, 210, 255, 0.08) 40%,
            rgba(200, 255, 230, 0.04) 60%,
            rgba(255, 220, 200, 0.06) 80%,
            transparent 100%);
    pointer-events: none;
    z-index: 0;
}

.header__user-dropdown.show {
    display: block;
}

.header__user-dropdown a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    position: relative;
    z-index: 2;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.header__user-dropdown a:hover {
    background: rgba(59, 91, 219, 0.08);
    color: var(--color-primary);
}

.header__user-dropdown hr {
    border: none;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    margin: var(--space-1) 0;
    position: relative;
    z-index: 2;
}

/* Burger */
.header__burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 6px;
}

.header__burger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
}


/* --------------------------------------------------------------------------
   Mobile Menu — Glass Drawer
   -------------------------------------------------------------------------- */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 2000;
}

.mobile-menu.open {
    display: block;
}

.mobile-menu__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.mobile-menu__content {
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.6));
    backdrop-filter: blur(40px) saturate(1.5);
    -webkit-backdrop-filter: blur(40px) saturate(1.5);
    border-left: 1.5px solid rgba(255, 255, 255, 0.7);
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
}

.mobile-menu.open .mobile-menu__content {
    transform: translateX(0);
}

.mobile-menu__header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.mobile-menu__close {
    margin-left: auto;
    width: 36px;
    height: 36px;
    border: 1.5px solid rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.3));
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.7);
    transition: all var(--transition-fast);
}

.mobile-menu__close:hover {
    background: rgba(239, 68, 68, 0.1);
}

.mobile-menu__nav {
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.mobile-menu__nav a {
    display: block;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    color: var(--color-text);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.mobile-menu__nav a:hover {
    background: rgba(59, 91, 219, 0.08);
    color: var(--color-primary);
}

.mobile-menu__nav hr {
    border: none;
    border-top: 1px solid rgba(0, 0, 0, 0.04);
    margin: var(--space-2) 0;
}

.mobile-menu__section {
    display: block;
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}


/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.main {
    padding: var(--space-8) 0;
    flex: 1 0 auto;
}

.layout {
    display: grid;
    gap: var(--space-8);
}

.layout--with-sidebar {
    grid-template-columns: 1fr var(--sidebar-width);
}

.layout--full {
    grid-template-columns: 1fr;
}


/* --------------------------------------------------------------------------
   Buttons — GLASS CAPSULES & COLORED GLASS
   Matching the reference: red, blue, purple colored glass capsules
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 12px 28px;
    border: 1.5px solid transparent;
    border-radius: var(--radius-full);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    position: relative;
}

/* PRIMARY — Blue glass capsule (like "Search projects..." in reference) */
.btn--primary {
    background: linear-gradient(180deg,
            rgba(92, 124, 250, 0.85) 0%,
            rgba(59, 91, 219, 0.9) 50%,
            rgba(43, 68, 168, 0.95) 100%);
    color: #fff;
    border-color: rgba(120, 150, 255, 0.5);
    box-shadow:
        0 4px 16px rgba(59, 91, 219, 0.35),
        0 1px 3px rgba(0, 0, 0, 0.1),
        inset 0 2px 4px rgba(255, 255, 255, 0.35),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.btn--primary:hover {
    background: linear-gradient(180deg,
            rgba(105, 140, 255, 0.9) 0%,
            rgba(76, 110, 245, 0.95) 50%,
            rgba(59, 91, 219, 1) 100%);
    color: #fff;
    box-shadow:
        0 6px 24px rgba(59, 91, 219, 0.45),
        0 2px 4px rgba(0, 0, 0, 0.12),
        inset 0 2px 4px rgba(255, 255, 255, 0.4),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

/* Glossy Red Pill Button (Header) */
.btn-glossy-red {
    background: linear-gradient(180deg, #ff6a6a 0%, #d31122 100%) !important;
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.4) !important;
    border-radius: 9999px !important;
    padding: 6px 16px !important;
    font-weight: 600 !important;
    box-shadow:
        0 6px 12px -2px rgba(193, 0, 21, 0.4),
        inset 0 3px 5px rgba(255, 255, 255, 0.6),
        inset 0 -3px 5px rgba(0, 0, 0, 0.3) !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3) !important;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
}

.btn-glossy-red::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    right: 2px;
    height: 40%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0.1) 100%);
    border-radius: 9999px 9999px 0 0;
    pointer-events: none;
}

.btn-glossy-red:hover {
    transform: translateY(-2px) !important;
    box-shadow:
        0 10px 16px -2px rgba(193, 0, 21, 0.5),
        inset 0 3px 5px rgba(255, 255, 255, 0.8),
        inset 0 -3px 5px rgba(0, 0, 0, 0.4) !important;
    color: #ffffff !important;
    background: linear-gradient(180deg, #ff7a7a 0%, #e01b2a 100%) !important;
}

.btn-glossy-red:active {
    transform: translateY(1px) !important;
    box-shadow:
        0 2px 4px -1px rgba(193, 0, 21, 0.4),
        inset 0 2px 4px rgba(0, 0, 0, 0.2) !important;
}

/* OUTLINE — Clear glass capsule (like "Icon button" in reference) */
.btn--outline {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.25));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--color-primary);
    border-color: rgba(255, 255, 255, 0.7);
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.06),
        inset 0 2px 3px rgba(255, 255, 255, 0.8),
        inset 0 -1px 3px rgba(0, 0, 0, 0.04);
}

.btn--outline:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0.4));
    color: var(--color-primary-dark);
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.08),
        inset 0 2px 3px rgba(255, 255, 255, 0.9),
        inset 0 -1px 3px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

/* ACCENT — Red/Orange glass capsule (like "Create workspace" in reference) */
.btn--accent {
    background: linear-gradient(180deg,
            rgba(255, 135, 100, 0.85) 0%,
            rgba(255, 107, 107, 0.9) 40%,
            rgba(220, 60, 60, 0.95) 100%);
    color: #fff;
    border-color: rgba(255, 160, 140, 0.5);
    box-shadow:
        0 4px 16px rgba(255, 107, 107, 0.35),
        0 1px 3px rgba(0, 0, 0, 0.1),
        inset 0 2px 4px rgba(255, 255, 255, 0.35),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.btn--accent:hover {
    background: linear-gradient(180deg,
            rgba(255, 150, 120, 0.9) 0%,
            rgba(255, 120, 120, 0.95) 40%,
            rgba(238, 90, 90, 1) 100%);
    color: #fff;
    box-shadow:
        0 6px 24px rgba(255, 107, 107, 0.45),
        inset 0 2px 4px rgba(255, 255, 255, 0.4),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.btn--sm {
    padding: 8px 18px;
    font-size: var(--font-size-xs);
}

.btn--lg {
    padding: 14px 32px;
    font-size: var(--font-size-base);
}

.btn--block {
    width: 100%;
}

/* ==========================================================================
   Dark Theme Overrides for Core Buttons
   ========================================================================== */
[data-theme="dark"] .btn--primary {
    background: linear-gradient(180deg,
            rgba(72, 104, 230, 0.5) 0%,
            rgba(39, 71, 199, 0.7) 50%,
            rgba(23, 48, 148, 0.85) 100%);
    border-color: rgba(140, 170, 255, 0.6);
    box-shadow:
        0 4px 16px rgba(59, 91, 219, 0.5),
        0 1px 3px rgba(0, 0, 0, 0.4),
        inset 0 2px 4px rgba(255, 255, 255, 0.4),
        inset 0 -2px 4px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .btn--primary:hover {
    background: linear-gradient(180deg,
            rgba(85, 120, 235, 0.6) 0%,
            rgba(56, 90, 225, 0.8) 50%,
            rgba(39, 71, 199, 0.95) 100%);
    border-color: rgba(160, 190, 255, 0.7);
    box-shadow:
        0 6px 24px rgba(59, 91, 219, 0.7),
        0 2px 4px rgba(0, 0, 0, 0.5),
        inset 0 2px 4px rgba(255, 255, 255, 0.5),
        inset 0 -2px 4px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .btn--outline {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
    border-color: rgba(255, 255, 255, 0.4);
    color: var(--color-primary-light);
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.3),
        inset 0 2px 3px rgba(255, 255, 255, 0.3),
        inset 0 -1px 3px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .btn--outline:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.1));
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--color-primary-light);
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.4),
        inset 0 2px 3px rgba(255, 255, 255, 0.4),
        inset 0 -1px 3px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .btn--accent {
    background: linear-gradient(180deg,
            rgba(235, 115, 80, 0.5) 0%,
            rgba(235, 87, 87, 0.7) 40%,
            rgba(200, 40, 40, 0.85) 100%);
    border-color: rgba(255, 180, 160, 0.6);
    box-shadow:
        0 4px 16px rgba(255, 107, 107, 0.5),
        0 1px 3px rgba(0, 0, 0, 0.4),
        inset 0 2px 4px rgba(255, 255, 255, 0.4),
        inset 0 -2px 4px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .btn--accent:hover {
    background: linear-gradient(180deg,
            rgba(235, 130, 100, 0.6) 0%,
            rgba(235, 100, 100, 0.8) 40%,
            rgba(218, 70, 70, 0.95) 100%);
    border-color: rgba(255, 200, 180, 0.7);
    box-shadow:
        0 6px 24px rgba(255, 107, 107, 0.7),
        0 2px 4px rgba(0, 0, 0, 0.5),
        inset 0 2px 4px rgba(255, 255, 255, 0.5),
        inset 0 -2px 4px rgba(0, 0, 0, 0.6);
}


/* --------------------------------------------------------------------------
   Cards — 3D Glass Panels
   -------------------------------------------------------------------------- */
.card {
    padding: var(--space-6);
}

.card--interactive:hover {
    transform: translateY(-4px);
    box-shadow: var(--glass-shadow-hover);
}

.card__icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-4);
    /* Glass icon box */
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.4));
    border: 1.5px solid rgba(255, 255, 255, 0.8);
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.05),
        inset 0 1px 3px rgba(255, 255, 255, 0.9),
        inset 0 -1px 2px rgba(0, 0, 0, 0.03);
}

/* Card Icon Color Themes (Landing Page) */
.card__icon--blue {
    background: #eff6ff;
    color: #1a56db;
}

.card__icon--green {
    background: #f0fdf4;
    color: #16a34a;
}

.card__icon--amber {
    background: #fef3c7;
    color: #d97706;
}

.card__icon--red {
    background: #fef2f2;
    color: #dc2626;
}

.card__icon--purple {
    background: #f5f3ff;
    color: #7c3aed;
}

.card__icon--cyan {
    background: #f0f9ff;
    color: #0284c7;
}

.card__icon--rose {
    background: #fff1f2;
    color: #e11d48;
}

.card__icon--orange {
    background: #fff7ed;
    color: #ea580c;
}

.card__icon--indigo {
    background: #eef2ff;
    color: #4f46e5;
}

.card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.card__text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}


/* --------------------------------------------------------------------------
   Widgets (Sidebar) — Glass
   -------------------------------------------------------------------------- */
.widget {
    margin-bottom: var(--space-4);
}

.widget__header {
    padding: var(--space-3) var(--space-4);
    background: rgba(59, 91, 219, 0.05);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    position: relative;
    z-index: 2;
}

.widget__body {
    padding: var(--space-4);
    position: relative;
    z-index: 2;
}

.widget--counter .widget__body {
    display: flex;
    gap: var(--space-6);
    justify-content: center;
}

.counter-stat {
    text-align: center;
}

.counter-stat__value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-primary);
}

.counter-stat__label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}


/* --------------------------------------------------------------------------
   Alerts — Glass Notifications
   -------------------------------------------------------------------------- */
.alert {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-sm);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.04),
        inset 0 1px 2px rgba(255, 255, 255, 0.6);
}

.alert--success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(16, 185, 129, 0.08));
    border-color: rgba(16, 185, 129, 0.3);
    color: #065f46;
}

.alert--error,
.alert--danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.12), rgba(239, 68, 68, 0.06));
    border-color: rgba(239, 68, 68, 0.25);
    color: #991b1b;
}

.alert--warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(245, 158, 11, 0.06));
    border-color: rgba(245, 158, 11, 0.25);
    color: #92400e;
}

.alert--info {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(59, 130, 246, 0.06));
    border-color: rgba(59, 130, 246, 0.25);
    color: #1e40af;
}

.alert__close {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    padding: var(--space-1);
    opacity: 0.7;
}

.alert__close:hover {
    opacity: 1;
}


/* --------------------------------------------------------------------------
   Forms — Glass Inputs (pill-shaped like reference)
   -------------------------------------------------------------------------- */
.form-group {
    margin-bottom: var(--space-4);
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-1);
    color: var(--color-text);
}

.form-control {
    width: 100%;
    padding: 12px 20px;
    border: 1.5px solid rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-full);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.25));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.04),
        inset 0 2px 3px rgba(255, 255, 255, 0.7),
        inset 0 -1px 3px rgba(0, 0, 0, 0.03);
    transition: all var(--transition-base);
}

/* Fix browser autofill background */
.form-control:-webkit-autofill,
.form-control:-webkit-autofill:hover,
.form-control:-webkit-autofill:focus,
.form-control:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 30px #ffffff inset !important;
    -webkit-text-fill-color: var(--color-text) !important;
    transition: background-color 5000s ease-in-out 0s;
}

.form-control:focus {
    outline: none;
    border-color: rgba(59, 91, 219, 0.4);
    box-shadow:
        0 0 0 4px rgba(59, 91, 219, 0.08),
        0 2px 8px rgba(0, 0, 0, 0.06),
        inset 0 2px 3px rgba(255, 255, 255, 0.8);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0.4));
}

select.form-control {
    appearance: none;
    background-color: rgba(255, 255, 255, 0.85);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: var(--space-10);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

select.form-control option {
    background: #fff;
    color: var(--color-text);
    padding: 8px 12px;
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
    border-radius: var(--radius-lg);
}

.form-help {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-danger);
    margin-top: var(--space-1);
}


/* --------------------------------------------------------------------------
   Landing Page — Hero (Gradient + Glass buttons)
   -------------------------------------------------------------------------- */
.hero {
    text-align: center;
    padding: var(--space-20) 0 var(--space-16);
    background: linear-gradient(135deg, #1E3A8A 0%, #3B5BDB 40%, #5C7CFA 70%, #748FFC 100%);
    color: #fff;
    margin: calc(-1 * var(--space-8)) calc(-1 * var(--space-4)) var(--space-12);
    border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
    position: relative;
    overflow: hidden;
}

/* Soft light orbs in hero */
.hero::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -80px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 65%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -60px;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(200, 160, 255, 0.12) 0%, transparent 65%);
    border-radius: 50%;
    pointer-events: none;
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.hero__badge {
    display: inline-block;
    padding: 8px 24px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--space-6);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    box-shadow:
        inset 0 1px 2px rgba(255, 255, 255, 0.2),
        0 2px 8px rgba(0, 0, 0, 0.1);
}

.hero__title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    color: #fff;
    letter-spacing: -0.03em;
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--space-8);
    line-height: 1.6;
}

.hero__actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* Hero buttons — frosted glass capsules */
.hero__actions .btn--primary {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.35);
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.12),
        inset 0 2px 3px rgba(255, 255, 255, 0.25),
        inset 0 -1px 3px rgba(0, 0, 0, 0.1);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

.hero__actions .btn--primary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.15),
        inset 0 2px 4px rgba(255, 255, 255, 0.3),
        inset 0 -1px 3px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
    color: #fff;
}

.hero__actions .btn--outline {
    color: #fff;
    background: transparent;
    border-color: rgba(255, 255, 255, 0.3);
    backdrop-filter: none;
    box-shadow: none;
}

.hero__actions .btn--outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.15);
    color: #fff;
    transform: translateY(-2px);
}


/* --------------------------------------------------------------------------
   Landing — Features
   -------------------------------------------------------------------------- */
.features {
    margin-bottom: var(--space-16);
}

.features__title {
    text-align: center;
    margin-bottom: var(--space-12);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}


/* --------------------------------------------------------------------------
   Landing — Stats (Glass Panel)
   -------------------------------------------------------------------------- */
.stats {
    padding: var(--space-12) var(--space-8);
    margin-bottom: var(--space-16);
    text-align: center;
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8);
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.stats__item {
    text-align: center;
}

.stats__value {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-primary);
}

.stats__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}


/* --------------------------------------------------------------------------
   Ad Slots
   -------------------------------------------------------------------------- */
.ad-slot {
    padding: var(--space-3) 0;
}

.ad-slot--header {
    background: rgba(0, 0, 0, 0.02);
}


/* --------------------------------------------------------------------------
   Footer — Blue Volumetric Glass
   -------------------------------------------------------------------------- */
.footer {
    position: relative;
    margin-top: var(--space-16);
    padding: var(--space-12) 0 var(--space-6);

    /* Enhanced Blue volumetric glass effect */
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.55) 0%, rgba(30, 58, 138, 0.75) 100%);
    backdrop-filter: blur(24px) saturate(1.3);
    -webkit-backdrop-filter: blur(24px) saturate(1.3);
    color: #e2e8f0;

    /* Pedestal shape with glass thickess */
    border-radius: 40px 40px 0 0;
    border-top: 1.5px solid rgba(255, 255, 255, 0.25);
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    border-right: 1px solid rgba(255, 255, 255, 0.08);

    box-shadow:
        inset 0 4px 6px -1px rgba(255, 255, 255, 0.15),
        inset 0 24px 48px -12px rgba(255, 255, 255, 0.08),
        0 -15px 40px -10px rgba(30, 58, 138, 0.6),
        0 -2px 10px rgba(0, 0, 0, 0.3);
    z-index: 10;
}

/* Prismatic top highlight for extra glass feel */
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 40px;
    /* offset for border radius */
    right: 40px;
    height: 1.5px;
    background: linear-gradient(90deg,
            transparent 0%,
            rgba(255, 255, 255, 0.4) 20%,
            rgba(255, 255, 255, 0.8) 50%,
            rgba(255, 255, 255, 0.4) 80%,
            transparent 100%);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
    z-index: 1;
}

/* --------------------------------------------------------------------------
   Footer Lights (Volumetric effect)
   -------------------------------------------------------------------------- */
.footer__lights {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    /* Behind content */
    pointer-events: none;
    overflow: hidden;
    border-radius: 40px 40px 0 0;
    /* Match footer border radius */
    opacity: 0.8;
}

.footer__light {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    animation: drift 20s infinite alternate ease-in-out;
}

.footer__light--center {
    width: 250px;
    height: 250px;
    background: #0369a1;
    /* Even darker blue (cyan-700) */
    top: 50%;
    left: 40%;
    margin-top: -125px;
    margin-left: -125px;
    animation: drift-wide 40s infinite alternate ease-in-out;
}

@keyframes drift-wide {
    0% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30vw, -40px) scale(1.2);
    }

    50% {
        transform: translate(-30vw, 50px) scale(0.8);
    }

    75% {
        transform: translate(20vw, -30px) scale(1.1);
    }

    100% {
        transform: translate(-40vw, 40px) scale(1);
    }
}

.container--footer {
    position: relative;
    z-index: 2;
    max-width: 1200px;
}

.footer__horizontal-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.footer__horizontal-links a {
    color: #cbd5e1;
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__horizontal-links a:hover {
    color: #fff;
}

.footer__bottom-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-4);
    font-size: 13px;
    color: #94a3b8;
}

.footer__copy {
    font-weight: 500;
    color: #cbd5e1;
}

.footer__disclaimer {
    font-size: 12px;
}


/* --------------------------------------------------------------------------
   Page Header
   -------------------------------------------------------------------------- */
.page-header {
    margin-bottom: var(--space-8);
}

.page-header__title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.page-header__subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.breadcrumbs a {
    color: var(--color-text-secondary);
}

.breadcrumbs a:hover {
    color: var(--color-primary);
}


/* --------------------------------------------------------------------------
   Calculator Common — Glass
   -------------------------------------------------------------------------- */
.calc-card {
    padding: var(--space-8);
}

.calc-result {
    background: linear-gradient(135deg, rgba(59, 91, 219, 0.06), rgba(59, 91, 219, 0.03));
    border: 1.5px solid rgba(59, 91, 219, 0.12);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-top: var(--space-6);
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.4);
}

.calc-result__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-1);
}

.calc-result__value {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-primary);
}

.calc-result__text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-2);
}


/* --------------------------------------------------------------------------
   Tables — Glass Table
   -------------------------------------------------------------------------- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1.5px solid rgba(255, 255, 255, 0.6);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0.2));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--glass-shadow), var(--glass-inner-glow);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

thead {
    background: rgba(59, 91, 219, 0.04);
}

th {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    font-weight: 600;
    color: var(--color-primary);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid rgba(0, 0, 0, 0.03);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background: rgba(59, 91, 219, 0.03);
}


/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .layout--with-sidebar {
        grid-template-columns: 1fr;
    }

    .layout__sidebar {
        order: -1;
    }

    .footer__horizontal-links {
        justify-content: center;
        gap: var(--space-4);
    }

    .footer__bottom-info {
        align-items: center;
        text-align: center;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }

    .header__nav {
        display: none;
    }

    .header__burger {
        display: flex;
    }

    .header__actions .btn {
        display: none;
    }

    .hero__title {
        font-size: 1.6rem;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .hero__subtitle {
        font-size: var(--font-size-base);
    }

    h1 {
        font-size: var(--font-size-2xl);
    }

    h2 {
        font-size: var(--font-size-xl);
    }

    .footer__horizontal-links {
        justify-content: center;
        gap: var(--space-3);
    }

    .calc-card {
        padding: var(--space-4);
    }
}

@media (max-width: 480px) {
    .hero__actions {
        flex-direction: column;
    }

    .hero__actions .btn {
        width: 100%;
    }

    .features__grid {
        grid-template-columns: 1fr;
    }
}


/* --------------------------------------------------------------------------
   Legacy CSS variable compatibility
   -------------------------------------------------------------------------- */
:root {
    --border-color: rgba(0, 0, 0, 0.06);
    --text-secondary: var(--color-text-secondary);
    --text-primary: var(--color-text);
    --text-muted: var(--color-text-muted);
    --card-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.35));
    --bg-body: var(--color-bg);
    --hover-bg: rgba(59, 91, 219, 0.04);
    --input-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.25));
    --accent-blue: var(--color-primary);
    --accent-green: var(--color-success);
    --accent-orange: var(--color-accent);
    --accent-red: var(--color-danger);
    --accent-bg: rgba(59, 91, 219, 0.05);
    --btn-dark: var(--color-primary-900);
    --link-color: var(--color-primary);
    --table-header-bg: rgba(59, 91, 219, 0.05);
    --table-alt-bg: rgba(0, 0, 0, 0.015);
    --color-white: var(--color-bg-white);
    --color-bg-light: rgba(0, 0, 0, 0.02);
}

/* Tool container and card — used by calculator templates */
.tool-container {
    max-width: 100%;
}

.tool-card .card-body {
    padding: 24px 32px 32px;
    position: relative;
    z-index: 2;
}

/* Results table — used by penalties and other calcs */
.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
    margin-top: var(--space-4);
}

.results-table th {
    background: rgba(59, 91, 219, 0.05);
    color: var(--color-primary);
    font-weight: 600;
    padding: var(--space-3) var(--space-4);
    text-align: left;
    border-bottom: 1px solid rgba(59, 91, 219, 0.1);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.results-table td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.results-table tr:nth-child(even) {
    background: rgba(0, 0, 0, 0.015);
}

.results-table .total-row td {
    font-weight: 700;
    background: rgba(59, 91, 219, 0.05);
    border-top: 1px solid rgba(59, 91, 219, 0.12);
}

/* ==========================================================================
   Calculator Glass System — V2 volumetric glass for ALL form elements
   ========================================================================== */

/* Calc form container — full glass surface */
.calc-form {
    position: relative;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.55) 0%,
            rgba(255, 255, 255, 0.35) 40%,
            rgba(240, 245, 255, 0.3) 60%,
            rgba(255, 255, 255, 0.45) 100%) !important;
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    border: 1.5px solid rgba(255, 255, 255, 0.75) !important;
    border-radius: 24px !important;
    overflow: hidden;
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.04),
        0 8px 16px rgba(0, 0, 0, 0.06),
        0 16px 32px rgba(0, 0, 0, 0.04),
        inset 0 2px 4px rgba(255, 255, 255, 0.9),
        inset 0 0 20px rgba(255, 255, 255, 0.25),
        inset 0 -2px 6px rgba(0, 0, 0, 0.04);
    padding: 28px !important;
}

.calc-form::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1.5px solid transparent;
    border-top-color: rgba(255, 255, 255, 0.85);
    border-left-color: rgba(255, 255, 255, 0.5);
    border-right-color: rgba(255, 255, 255, 0.15);
    border-bottom-color: rgba(0, 0, 0, 0.03);
    pointer-events: none;
    z-index: 1;
}

.calc-form::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        linear-gradient(135deg,
            transparent 0%,
            rgba(255, 220, 255, 0.06) 20%,
            rgba(180, 210, 255, 0.08) 40%,
            rgba(200, 255, 230, 0.04) 60%,
            rgba(255, 220, 200, 0.06) 80%,
            transparent 100%);
    pointer-events: none;
    z-index: 0;
}

.calc-form>* {
    position: relative;
    z-index: 2;
}

/* Input fields — glass inset */
.input-control {
    width: 100%;
    padding: 10px 14px !important;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.25)) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.5px solid rgba(255, 255, 255, 0.7) !important;
    border-radius: 14px !important;
    font-size: 15px;
    color: var(--text-primary);
    transition: all 0.2s ease;
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.04),
        inset 0 2px 4px rgba(255, 255, 255, 0.7),
        inset 0 -1px 3px rgba(0, 0, 0, 0.03);
}

.input-control:focus {
    outline: none;
    border-color: rgba(59, 91, 219, 0.4) !important;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0.4)) !important;
    box-shadow:
        0 0 0 4px rgba(59, 91, 219, 0.08),
        0 2px 8px rgba(0, 0, 0, 0.06),
        inset 0 2px 3px rgba(255, 255, 255, 0.8) !important;
}

/* Share toggle — glass pill switcher */
.share-toggle {
    display: flex;
    gap: 8px;
    margin-top: 15px;
}

.share-radio {
    display: none;
}

.share-label {
    padding: 10px 20px !important;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.3)) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.5px solid rgba(255, 255, 255, 0.7) !important;
    border-radius: 999px !important;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.05),
        inset 0 2px 3px rgba(255, 255, 255, 0.8),
        inset 0 -1px 3px rgba(0, 0, 0, 0.04);
}

.share-label:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0.45)) !important;
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.06),
        inset 0 2px 3px rgba(255, 255, 255, 0.9),
        inset 0 -1px 3px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

.share-radio:checked+.share-label {
    background: linear-gradient(180deg,
            rgba(92, 124, 250, 0.85) 0%,
            rgba(59, 91, 219, 0.9) 50%,
            rgba(43, 68, 168, 0.95) 100%) !important;
    color: #fff !important;
    border-color: rgba(120, 150, 255, 0.5) !important;
    box-shadow:
        0 4px 16px rgba(59, 91, 219, 0.3),
        inset 0 2px 4px rgba(255, 255, 255, 0.3),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Notes block — glass panel */
.notes-block {
    position: relative;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.55) 0%,
            rgba(255, 255, 255, 0.35) 50%,
            rgba(255, 255, 255, 0.45) 100%) !important;
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border: 1.5px solid rgba(255, 255, 255, 0.75);
    border-radius: 20px !important;
    padding: 20px 24px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.04),
        0 8px 16px rgba(0, 0, 0, 0.05),
        inset 0 2px 4px rgba(255, 255, 255, 0.9),
        inset 0 -2px 6px rgba(0, 0, 0, 0.04);
}

/* Result & summary tables — glass surface */
.res-table,
.summary-table {
    width: 100%;
    border-collapse: separate !important;
    border-spacing: 0 !important;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.55) 0%,
            rgba(255, 255, 255, 0.35) 40%,
            rgba(240, 245, 255, 0.3) 60%,
            rgba(255, 255, 255, 0.45) 100%) !important;
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    border: 1.5px solid rgba(255, 255, 255, 0.75) !important;
    border-radius: 22px !important;
    overflow: hidden;
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.04),
        0 8px 16px rgba(0, 0, 0, 0.06),
        0 16px 32px rgba(0, 0, 0, 0.04),
        inset 0 2px 4px rgba(255, 255, 255, 0.9),
        inset 0 0 20px rgba(255, 255, 255, 0.25),
        inset 0 -2px 6px rgba(0, 0, 0, 0.04);
    margin-bottom: 25px;
}

.res-table td,
.res-table th,
.summary-table td,
.summary-table th {
    padding: 12px 14px;
    border: none !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05) !important;
    color: var(--text-primary);
    font-size: 15px;
}

.res-table th,
.summary-table th {
    background: rgba(59, 91, 219, 0.05);
    font-weight: 600;
}

.res-table tr:last-child td,
.summary-table tr:last-child td {
    border-bottom: none !important;
}

/* Copy button — glass outline capsule */
.btn-copy,
button[onclick*="copyToClipboard"] {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px !important;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.25)) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.5px solid rgba(255, 255, 255, 0.7) !important;
    border-radius: 999px !important;
    font-size: 14px !important;
    font-weight: 600;
    color: var(--color-primary) !important;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.06),
        inset 0 2px 3px rgba(255, 255, 255, 0.8),
        inset 0 -1px 3px rgba(0, 0, 0, 0.04);
    text-shadow: none !important;
}

.btn-copy:hover,
button[onclick*="copyToClipboard"]:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0.4)) !important;
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.08),
        inset 0 2px 3px rgba(255, 255, 255, 0.9),
        inset 0 -1px 3px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

/* Generic select/textarea glass */
.tool-container select,
.tool-container textarea,
.calc-form select,
.calc-form textarea {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.25)) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.5px solid rgba(255, 255, 255, 0.7) !important;
    border-radius: 14px !important;
    padding: 10px 14px;
    color: var(--text-primary);
    transition: all 0.2s ease;
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.04),
        inset 0 2px 4px rgba(255, 255, 255, 0.7),
        inset 0 -1px 3px rgba(0, 0, 0, 0.03);
}

.tool-container select:focus,
.tool-container textarea:focus,
.calc-form select:focus,
.calc-form textarea:focus {
    outline: none;
    border-color: rgba(59, 91, 219, 0.4) !important;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0.4)) !important;
    box-shadow:
        0 0 0 4px rgba(59, 91, 219, 0.08),
        0 2px 8px rgba(0, 0, 0, 0.06),
        inset 0 2px 3px rgba(255, 255, 255, 0.8);
}

/* Glass button treatment for all submit buttons */
.btn-submit,
button[type="submit"]:not(.header__user-btn):not(.header__burger):not(.mobile-menu__close):not(.alert__close) {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 12px 32px;
    background: linear-gradient(180deg,
            rgba(92, 124, 250, 0.85) 0%,
            rgba(59, 91, 219, 0.9) 50%,
            rgba(43, 68, 168, 0.95) 100%);
    color: #fff;
    border: 1.5px solid rgba(120, 150, 255, 0.5);
    border-radius: var(--radius-full);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
    box-shadow:
        0 4px 16px rgba(59, 91, 219, 0.3),
        inset 0 2px 4px rgba(255, 255, 255, 0.3),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.btn-submit:hover,
button[type="submit"]:not(.header__user-btn):not(.header__burger):not(.mobile-menu__close):not(.alert__close):hover {
    background: linear-gradient(180deg,
            rgba(105, 140, 255, 0.9) 0%,
            rgba(76, 110, 245, 0.95) 50%,
            rgba(59, 91, 219, 1) 100%);
    box-shadow:
        0 6px 24px rgba(59, 91, 219, 0.45),
        inset 0 2px 4px rgba(255, 255, 255, 0.4),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

/* ==========================================================================
   Extended Glass: Calc cards, tabs, toggles, info/result/SEO blocks
   ========================================================================== */

/* Calc cards — date calculator and similar */
.calc-card {
    position: relative;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.55) 0%,
            rgba(255, 255, 255, 0.35) 40%,
            rgba(240, 245, 255, 0.3) 60%,
            rgba(255, 255, 255, 0.45) 100%) !important;
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    border: 1.5px solid rgba(255, 255, 255, 0.75) !important;
    border-radius: 24px !important;
    overflow: hidden;
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.04),
        0 8px 16px rgba(0, 0, 0, 0.06),
        0 16px 32px rgba(0, 0, 0, 0.04),
        inset 0 2px 4px rgba(255, 255, 255, 0.9),
        inset 0 0 20px rgba(255, 255, 255, 0.25),
        inset 0 -2px 6px rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
}

.calc-card:hover {
    box-shadow:
        0 4px 8px rgba(0, 0, 0, 0.06),
        0 12px 24px rgba(0, 0, 0, 0.08),
        0 20px 40px rgba(0, 0, 0, 0.05),
        inset 0 2px 4px rgba(255, 255, 255, 0.95),
        inset 0 0 20px rgba(255, 255, 255, 0.3),
        inset 0 -2px 6px rgba(0, 0, 0, 0.04) !important;
}

/* Calc tabs — contract calculator */
.calc-tabs {
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.4),
            rgba(240, 245, 255, 0.3)) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.5) !important;
    border-radius: 24px 24px 0 0 !important;
}

.calc-tab {
    background: transparent !important;
    border-bottom: 3px solid transparent;
    transition: all 0.2s ease;
}

.calc-tab.active {
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.55),
            rgba(255, 255, 255, 0.35)) !important;
    border-bottom-color: var(--accent-blue);
}

.calc-tab:hover:not(.active) {
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.4),
            rgba(255, 255, 255, 0.25)) !important;
}

/* All toggle chip types — unified glass pills */
.mode-label,
.day-type-label,
.tax-label,
.op-btn {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.3)) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.5px solid rgba(255, 255, 255, 0.7) !important;
    border-radius: 999px !important;
    transition: all 0.2s ease;
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.05),
        inset 0 2px 3px rgba(255, 255, 255, 0.8),
        inset 0 -1px 3px rgba(0, 0, 0, 0.04);
}

.mode-label:hover,
.day-type-label:hover,
.tax-label:hover,
.op-btn:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0.45)) !important;
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.06),
        inset 0 2px 3px rgba(255, 255, 255, 0.9),
        inset 0 -1px 3px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

/* All checked toggle states — blue glass */
.mode-radio:checked+.mode-label,
.day-type-radio:checked+.day-type-label,
.tax-radio:checked+.tax-label,
input[name="operation"]:checked+.op-btn {
    background: linear-gradient(180deg,
            rgba(92, 124, 250, 0.85) 0%,
            rgba(59, 91, 219, 0.9) 50%,
            rgba(43, 68, 168, 0.95) 100%) !important;
    color: #fff !important;
    border-color: rgba(120, 150, 255, 0.5) !important;
    box-shadow:
        0 4px 16px rgba(59, 91, 219, 0.3),
        inset 0 2px 4px rgba(255, 255, 255, 0.3),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Calc buttons — glass capsule */
.btn-calc {
    border-radius: 999px !important;
    border: 1.5px solid rgba(120, 150, 255, 0.5) !important;
    box-shadow:
        0 4px 16px rgba(59, 91, 219, 0.3),
        inset 0 2px 4px rgba(255, 255, 255, 0.3),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    transition: all 0.2s ease;
}

.btn-primary.btn-calc {
    background: linear-gradient(180deg,
            rgba(92, 124, 250, 0.85) 0%,
            rgba(59, 91, 219, 0.9) 50%,
            rgba(43, 68, 168, 0.95) 100%) !important;
    color: #fff;
}

.btn-secondary.btn-calc {
    background: linear-gradient(180deg,
            rgba(60, 60, 80, 0.85) 0%,
            rgba(40, 40, 60, 0.9) 50%,
            rgba(25, 25, 45, 0.95) 100%) !important;
    color: #fff;
}

.btn-calc:hover {
    filter: none !important;
    transform: translateY(-2px);
    box-shadow:
        0 6px 24px rgba(59, 91, 219, 0.45),
        inset 0 2px 4px rgba(255, 255, 255, 0.4),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
}

/* Action buttons — glass capsules */
.action-btn {
    border-radius: 999px !important;
    border: 1.5px solid transparent !important;
    transition: all 0.2s ease;
}

.action-btn.btn-copy {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.25)) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-color: rgba(255, 255, 255, 0.7) !important;
    color: var(--color-primary) !important;
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.06),
        inset 0 2px 3px rgba(255, 255, 255, 0.8),
        inset 0 -1px 3px rgba(0, 0, 0, 0.04);
}

.action-btn.btn-pdf {
    background: linear-gradient(180deg,
            rgba(92, 124, 250, 0.85) 0%,
            rgba(59, 91, 219, 0.9) 50%,
            rgba(43, 68, 168, 0.95) 100%) !important;
    color: #fff !important;
    border-color: rgba(120, 150, 255, 0.5) !important;
    box-shadow:
        0 4px 16px rgba(59, 91, 219, 0.3),
        inset 0 2px 4px rgba(255, 255, 255, 0.3),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.action-btn:hover {
    filter: none !important;
    transform: translateY(-1px);
}

/* Result, SEO, Info, Ref blocks — glass panels */
.result-box,
.seo-block,
.info-block,
.ref-block {
    position: relative;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.55) 0%,
            rgba(255, 255, 255, 0.35) 50%,
            rgba(255, 255, 255, 0.45) 100%) !important;
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border: 1.5px solid rgba(255, 255, 255, 0.75) !important;
    border-radius: 20px !important;
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.04),
        0 8px 16px rgba(0, 0, 0, 0.05),
        inset 0 2px 4px rgba(255, 255, 255, 0.9),
        inset 0 -2px 6px rgba(0, 0, 0, 0.04);
}

/* Result section in contract calc — glass */
.result-section {
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.4),
            rgba(240, 245, 255, 0.3)) !important;
    border-top: 1px solid rgba(255, 255, 255, 0.5) !important;
    border-radius: 0 0 24px 24px !important;
}


/* --------------------------------------------------------------------------
   Custom Glass Validation Tooltips
   Replaces native browser "Заполните это поле" with styled glass bubbles
   -------------------------------------------------------------------------- */
.glass-validation-msg {
    position: absolute;
    left: 0;
    top: 100%;
    margin-top: 6px;
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 500;
    color: #b91c1c;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.92) 0%,
            rgba(255, 245, 245, 0.88) 50%,
            rgba(255, 255, 255, 0.85) 100%);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border: 1.5px solid rgba(239, 68, 68, 0.25);
    border-radius: 12px;
    box-shadow:
        0 4px 16px rgba(239, 68, 68, 0.12),
        0 2px 6px rgba(0, 0, 0, 0.06),
        inset 0 1px 3px rgba(255, 255, 255, 0.8),
        inset 0 -1px 3px rgba(239, 68, 68, 0.04);
    z-index: 10;
    pointer-events: none;
    opacity: 0;
    transform: translateY(-4px);
    animation: glassValidationIn 0.25s ease forwards;
    white-space: nowrap;
}

.glass-validation-msg::before {
    content: '';
    position: absolute;
    top: -5px;
    left: 16px;
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.92),
            rgba(255, 245, 245, 0.88));
    border-top: 1.5px solid rgba(239, 68, 68, 0.25);
    border-left: 1.5px solid rgba(239, 68, 68, 0.25);
    transform: rotate(45deg);
}

.glass-validation-msg i {
    margin-right: 5px;
    color: #ef4444;
    font-size: 11px;
}

@keyframes glassValidationIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Input error highlight ring */
.input-error {
    border-color: rgba(239, 68, 68, 0.5) !important;
    box-shadow:
        0 0 0 3px rgba(239, 68, 68, 0.08),
        inset 0 1px 2px rgba(239, 68, 68, 0.06) !important;
}

/* Form group needs relative positioning for tooltip */
.form-group {
    position: relative;
}

/* ==========================================================================
   Dark Theme Overrides for Layout Components
   ========================================================================== */
[data-theme="dark"] .header {
    background: linear-gradient(180deg, rgba(30, 41, 59, 0.85) 0%, rgba(15, 23, 42, 0.7) 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .header__nav-link {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
    border-color: rgba(255, 255, 255, 0.1);
    color: #94a3b8;
    box-shadow:
        0 1px 4px rgba(0, 0, 0, 0.2),
        inset 0 1px 1px rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .header__nav-link:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
    border-color: rgba(120, 100, 200, 0.3);
    color: #c4b5fd;
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.3),
        inset 0 1px 2px rgba(120, 100, 200, 0.15);
    transform: translateY(-1px);
}

[data-theme="dark"] .header__nav-link.active {
    background: linear-gradient(135deg, rgba(120, 100, 200, 0.15), rgba(80, 60, 160, 0.10));
    border-color: rgba(120, 100, 200, 0.3);
    color: #c4b5fd;
    box-shadow:
        0 2px 10px rgba(120, 100, 200, 0.15),
        inset 0 1px 2px rgba(120, 100, 200, 0.15);
}

[data-theme="dark"] .header__dropdown-menu,
[data-theme="dark"] .header__user-dropdown {
    background: linear-gradient(135deg,
            rgba(15, 20, 40, 0.95) 0%,
            rgba(10, 15, 35, 0.92) 50%,
            rgba(8, 12, 30, 0.95) 100%);
    backdrop-filter: blur(24px) saturate(1.3);
    -webkit-backdrop-filter: blur(24px) saturate(1.3);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.5),
        0 2px 8px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .header__dropdown-menu::before,
[data-theme="dark"] .header__user-dropdown::before {
    border-color: rgba(120, 100, 200, 0.25);
    box-shadow:
        inset 0 1px 2px rgba(140, 120, 220, 0.15),
        inset 0 -1px 2px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .header__dropdown-menu a:hover {
    background: rgba(120, 100, 200, 0.15);
    color: #c4b5fd;
}

[data-theme="dark"] .header__user-btn {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    border-color: rgba(120, 100, 200, 0.2);
}

[data-theme="dark"] .header__user-btn:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.08));
    border-color: rgba(140, 120, 220, 0.3);
}

[data-theme="dark"] .mobile-menu__content {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.95), rgba(15, 23, 42, 0.95));
    border-left-color: rgba(100, 80, 160, 0.15);
}

[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #020617 0%, #172554 40%, #1e3a8a 70%, #1e40af 100%);
}

[data-theme="dark"] .hero__badge {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(100, 80, 160, 0.15);
}

[data-theme="dark"] .hero__actions .btn--primary {
    background: linear-gradient(135deg, rgba(59, 91, 219, 0.6), rgba(30, 58, 138, 0.4));
}

[data-theme="dark"] .form-control {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.6), rgba(30, 41, 59, 0.4));
    border-color: rgba(100, 80, 160, 0.25);
    color: #ffffff;
    box-shadow: inset 0 2px 3px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .form-control:-webkit-autofill,
[data-theme="dark"] .form-control:-webkit-autofill:hover,
[data-theme="dark"] .form-control:-webkit-autofill:focus,
[data-theme="dark"] .form-control:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 30px #1e293b inset !important;
    -webkit-text-fill-color: #ffffff !important;
    transition: background-color 5000s ease-in-out 0s;
}

[data-theme="dark"] .form-control::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .form-control:focus {
    background: linear-gradient(135deg, rgba(51, 65, 85, 0.7), rgba(51, 65, 85, 0.5));
    border-color: rgba(140, 170, 255, 0.7);
    color: #ffffff;
    box-shadow: 0 0 0 4px rgba(92, 124, 250, 0.2), inset 0 2px 3px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] select.form-control {
    background-color: rgba(15, 23, 42, 0.85);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
}

[data-theme="dark"] select.form-control option {
    background: #0f172a;
    color: #f8fafc;
}

[data-theme="dark"] .table-wrapper {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.4), rgba(15, 23, 42, 0.2));
    border-color: rgba(100, 80, 160, 0.15);
}

[data-theme="dark"] table thead {
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] table th {
    color: var(--color-primary-light);
    border-bottom: 1px solid rgba(100, 80, 160, 0.15);
}

[data-theme="dark"] table td {
    border-bottom: 1px solid rgba(100, 80, 160, 0.08);
}

[data-theme="dark"] table tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

[data-theme="dark"] .calc-card,
[data-theme="dark"] .tool-card,
[data-theme="dark"] .card,
[data-theme="dark"] .stats,
[data-theme="dark"] .widget {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(2, 6, 23, 0.9)) !important;
    border-color: rgba(100, 80, 160, 0.15) !important;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6), inset 0 1px 2px rgba(120, 100, 200, 0.08) !important;
}

[data-theme="dark"] .card--interactive:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.7) !important;
    border-color: rgba(120, 100, 200, 0.3) !important;
}

[data-theme="dark"] .glass-surface::before,
[data-theme="dark"] .card::before,
[data-theme="dark"] .widget::before,
[data-theme="dark"] .calc-card::before,
[data-theme="dark"] .tool-card::before,
[data-theme="dark"] .stats::before {
    border-top-color: rgba(120, 100, 200, 0.12) !important;
    border-left-color: rgba(100, 80, 180, 0.06) !important;
    border-right-color: transparent !important;
    border-bottom-color: transparent !important;
}

[data-theme="dark"] .glass-surface::after,
[data-theme="dark"] .card::after,
[data-theme="dark"] .widget::after,
[data-theme="dark"] .calc-card::after,
[data-theme="dark"] .tool-card::after,
[data-theme="dark"] .stats::after {
    background: none !important;
}

/* Dark Mode Icon Themes */
[data-theme="dark"] .card__icon--blue {
    background: rgba(59, 130, 246, 0.15) !important;
    color: #60a5fa !important;
    border-color: rgba(59, 130, 246, 0.2) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), inset 0 1px 2px rgba(96, 165, 250, 0.15) !important;
}

[data-theme="dark"] .card__icon--green {
    background: rgba(34, 197, 94, 0.15) !important;
    color: #4ade80 !important;
    border-color: rgba(34, 197, 94, 0.2) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), inset 0 1px 2px rgba(74, 222, 128, 0.15) !important;
}

[data-theme="dark"] .card__icon--amber {
    background: rgba(245, 158, 11, 0.15) !important;
    color: #fbbf24 !important;
    border-color: rgba(245, 158, 11, 0.2) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), inset 0 1px 2px rgba(251, 191, 36, 0.15) !important;
}

[data-theme="dark"] .card__icon--red {
    background: rgba(239, 68, 68, 0.15) !important;
    color: #f87171 !important;
    border-color: rgba(239, 68, 68, 0.2) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), inset 0 1px 2px rgba(248, 113, 113, 0.15) !important;
}

[data-theme="dark"] .card__icon--purple {
    background: rgba(139, 92, 246, 0.15) !important;
    color: #a78bfa !important;
    border-color: rgba(139, 92, 246, 0.2) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), inset 0 1px 2px rgba(167, 139, 250, 0.15) !important;
}

[data-theme="dark"] .card__icon--cyan {
    background: rgba(14, 165, 233, 0.15) !important;
    color: #38bdf8 !important;
    border-color: rgba(14, 165, 233, 0.2) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), inset 0 1px 2px rgba(56, 189, 248, 0.15) !important;
}

[data-theme="dark"] .card__icon--rose {
    background: rgba(225, 29, 72, 0.15) !important;
    color: #fb7185 !important;
    border-color: rgba(225, 29, 72, 0.2) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), inset 0 1px 2px rgba(251, 113, 133, 0.15) !important;
}

[data-theme="dark"] .card__icon--orange {
    background: rgba(234, 88, 12, 0.15) !important;
    color: #fb923c !important;
    border-color: rgba(234, 88, 12, 0.2) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), inset 0 1px 2px rgba(251, 146, 60, 0.15) !important;
}

[data-theme="dark"] .card__icon--indigo {
    background: rgba(79, 70, 229, 0.15) !important;
    color: #818cf8 !important;
    border-color: rgba(79, 70, 229, 0.2) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), inset 0 1px 2px rgba(129, 140, 248, 0.15) !important;
}

/* Remove specific stark white glass overlays from ALL icons in dark mode */
[data-theme="dark"] .card__icon {
    border-color: rgba(255, 255, 255, 0.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3), inset 0 1px 2px rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .info-block,
[data-theme="dark"] .ref-block,
[data-theme="dark"] .seo-block,
[data-theme="dark"] .result-box,
[data-theme="dark"] .result-section {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.6), rgba(2, 6, 23, 0.4)) !important;
    border-color: rgba(100, 80, 160, 0.15) !important;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.5) !important;
    color: var(--text-secondary);
}

[data-theme="dark"] .calc-tabs {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(2, 6, 23, 0.9)) !important;
    border-bottom: 1px solid rgba(100, 80, 160, 0.15) !important;
}

[data-theme="dark"] .calc-tab.active {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.8), rgba(15, 23, 42, 0.7)) !important;
    border-bottom-color: var(--color-primary) !important;
}

[data-theme="dark"] .calc-tab:hover:not(.active) {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.4), rgba(15, 23, 42, 0.3)) !important;
}

[data-theme="dark"] .calc-result {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.6), rgba(2, 6, 23, 0.4));
    border-color: rgba(100, 80, 160, 0.15);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .calc-result__label,
[data-theme="dark"] .calc-result__text,
[data-theme="dark"] .form-group label,
[data-theme="dark"] .form-help,
[data-theme="dark"] .breadcrumbs,
[data-theme="dark"] .breadcrumbs a,
[data-theme="dark"] .page-header__subtitle {
    color: var(--color-text-secondary);
}

[data-theme="dark"] .calc-result__value,
[data-theme="dark"] .page-header__title,
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4 {
    color: var(--color-text);
}

[data-theme="dark"] .calc-form {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(2, 6, 23, 0.9) 100%) !important;
    border-color: rgba(100, 80, 160, 0.15) !important;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6), inset 0 1px 2px rgba(120, 100, 200, 0.08);
}

[data-theme="dark"] .calc-form::before {
    border-color: rgba(100, 80, 160, 0.15);
}

[data-theme="dark"] .input-control {
    background: linear-gradient(135deg, rgba(8, 12, 23, 0.8), rgba(2, 6, 23, 0.7)) !important;
    border-color: rgba(100, 80, 160, 0.15) !important;
    color: #ffffff;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .input-control::placeholder {
    color: rgba(255, 255, 255, 0.5) !important;
}

[data-theme="dark"] .input-control:focus {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(8, 12, 23, 0.85)) !important;
    border-color: rgba(92, 124, 250, 0.5) !important;
    color: #ffffff;
    box-shadow: 0 0 0 4px rgba(92, 124, 250, 0.25), inset 0 2px 4px rgba(0, 0, 0, 0.5) !important;
}

[data-theme="dark"] .share-label,
[data-theme="dark"] .tax-label {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(2, 6, 23, 0.8)) !important;
    border-color: rgba(100, 80, 160, 0.2) !important;
    color: #cbd5e1 !important;
}

[data-theme="dark"] .share-label:hover,
[data-theme="dark"] .tax-label:hover {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 0.8)) !important;
    border-color: rgba(120, 100, 200, 0.3) !important;
    color: #ffffff !important;
}

[data-theme="dark"] .share-radio:checked+.share-label,
[data-theme="dark"] .tax-radio:checked+.tax-label {
    background: linear-gradient(180deg, rgba(59, 91, 219, 0.8), rgba(43, 68, 168, 0.9), rgba(23, 48, 148, 0.95)) !important;
    color: #ffffff !important;
    border-color: rgba(140, 170, 255, 0.4) !important;
}

[data-theme="dark"] .notes-block,
[data-theme="dark"] .res-table,
[data-theme="dark"] .summary-table {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(2, 6, 23, 0.85)) !important;
    border: none !important;
    color: #cbd5e1 !important;
}

[data-theme="dark"] .res-table td,
[data-theme="dark"] .res-table th,
[data-theme="dark"] .summary-table td,
[data-theme="dark"] .summary-table th {
    color: var(--color-text);
    border-bottom-color: rgba(100, 80, 160, 0.1) !important;
}

[data-theme="dark"] .res-table th,
[data-theme="dark"] .summary-table th {
    background: rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   Dark Theme: Secondary Buttons (Black Liquid Glass)
   ========================================================================== */
[data-theme="dark"] .btn-secondary,
[data-theme="dark"] .btn-outline,
[data-theme="dark"] .btn-copy,
[data-theme="dark"] button[onclick*="copyToClipboard"],
[data-theme="dark"] .op-btn,
[data-theme="dark"] .day-type-label {
    background: linear-gradient(180deg, #1f2029 0%, #0d0e12 100%) !important;
    border: 1px solid rgba(0, 0, 0, 0.8) !important;
    box-shadow:
        0 6px 16px rgba(0, 0, 0, 0.6),
        0 2px 4px rgba(0, 0, 0, 0.5),
        inset 0 1.5px 1px rgba(255, 255, 255, 0.25),
        inset 0 -2px 6px rgba(0, 0, 0, 0.8),
        inset 0 0 0 1px rgba(255, 255, 255, 0.05) !important;
    color: #e2e8f0 !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8) !important;
    transition: all 0.2s ease !important;
}

[data-theme="dark"] .btn-secondary:hover,
[data-theme="dark"] .btn-outline:hover,
[data-theme="dark"] .btn-copy:hover,
[data-theme="dark"] button[onclick*="copyToClipboard"]:hover,
[data-theme="dark"] .op-btn:hover,
[data-theme="dark"] .day-type-label:hover {
    background: linear-gradient(180deg, #2a2b36 0%, #15161c 100%) !important;
    box-shadow:
        0 8px 24px rgba(0, 0, 0, 0.7),
        0 4px 8px rgba(0, 0, 0, 0.6),
        inset 0 1.5px 1px rgba(255, 255, 255, 0.35),
        inset 0 -2px 6px rgba(0, 0, 0, 0.9),
        inset 0 0 0 1px rgba(255, 255, 255, 0.08) !important;
    color: #ffffff !important;
    transform: translateY(-1px) !important;
}

/* Fix for legacy variables and explicit grey text classes */
[data-theme="dark"] {
    --text-secondary: #cbd5e1;
    --text-primary: #ffffff;
    --text-muted: #94a3b8;
    --border-color: rgba(100, 80, 160, 0.15);
    --card-bg: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(2, 6, 23, 0.9));
    --input-bg: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(2, 6, 23, 0.85));
    --hover-bg: rgba(255, 255, 255, 0.05);
    --accent-bg: rgba(92, 124, 250, 0.15);
    --bg-secondary: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .text-muted,
[data-theme="dark"] .form-text,
[data-theme="dark"] .text-secondary {
    color: #cbd5e1 !important;
}

/* Ensure the formulas block inside the calculator is highly visible */
[data-theme="dark"] .notes-block strong,
[data-theme="dark"] .notes-block b {
    color: #ffffff;
}

/* ===== Theme switching — disable transitions to prevent flashes ===== */
.theme-switching,
.theme-switching *,
.theme-switching *::before,
.theme-switching *::after {
    transition: none !important;
}

/* --------------------------------------------------------------------------
   Glass Download Button
   -------------------------------------------------------------------------- */
.btn-glass-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-primary);
    text-decoration: none;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.45));
    border: 1.5px solid rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow:
        0 4px 16px rgba(59, 91, 219, 0.06),
        inset 0 1px 3px rgba(255, 255, 255, 1);
    transition: all var(--transition-base);
}

.btn-glass-download i {
    font-size: 1.1em;
}

.btn-glass-download:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.65));
    box-shadow:
        0 6px 20px rgba(59, 91, 219, 0.12),
        inset 0 1px 3px rgba(255, 255, 255, 1);
    transform: translateY(-2px);
    color: var(--color-primary-dark);
}

.btn-glass-download:active {
    transform: translateY(0);
}

[data-theme="dark"] .btn-glass-download {
    background: linear-gradient(135deg, rgba(59, 91, 219, 0.15), rgba(59, 91, 219, 0.05));
    border-color: rgba(59, 91, 219, 0.3);
    color: var(--color-primary-light);
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.2),
        inset 0 1px 2px rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .btn-glass-download:hover {
    background: linear-gradient(135deg, rgba(59, 91, 219, 0.25), rgba(59, 91, 219, 0.1));
    border-color: rgba(59, 91, 219, 0.5);
    color: #fff;
    box-shadow:
        0 6px 16px rgba(0, 0, 0, 0.3),
        inset 0 1px 2px rgba(255, 255, 255, 0.15);
}