/* ==========================================================================
   AiVRIC Vision - Main Landing Page Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables
   -------------------------------------------------------------------------- */
:root {
    /* Color Palette - Dark Theme (default) */
    --color-background: var(--wl-background, #000522);
    --color-background-secondary: #0D1528;
    --color-background-tertiary: #101C34;
    --color-surface: #0D1528;
    --color-surface-hover: #1B2A47;

    /* Brand Colors (reference white-label vars with fallback defaults) */
    --color-primary: var(--wl-primary, #2050C0);
    --color-primary-dark: #1B2A47;
    --color-primary-light: var(--wl-secondary, #3B5B90);
    --color-accent: var(--wl-accent, #F4B860);
    --color-accent-dark: #C4922E;
    --color-accent-light: #F7CC7F;

    --color-success: #2BD4A7;
    --color-success-dark: #09BF3D;
    --color-success-light: #5EEAD4;

    --color-warning: #F4B860;
    --color-warning-dark: #D4993D;
    --color-warning-light: #FADA8E;

    --color-danger: #FF4D6D;
    --color-danger-dark: #E11D48;
    --color-danger-light: #FDA4AF;

    --color-text-primary: #EAF2FF;
    --color-text-secondary: #9FB0CC;
    --color-text-muted: #7A8FAD;

    --color-border: #1B2A47;
    --color-border-light: #3B5B90;

    /* Gradient */
    --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    --gradient-card-hover: linear-gradient(135deg, rgba(32, 80, 192, 0.1), rgba(244, 184, 96, 0.1));

    /* Typography */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    --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;
    --font-size-5xl: 3rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --shadow-glow-primary: 0 0 20px rgba(32, 80, 192, 0.3);
    --shadow-glow-accent: 0 0 20px rgba(244, 184, 96, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-bounce: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
}

/* --------------------------------------------------------------------------
   Light Theme Variables
   -------------------------------------------------------------------------- */
.light {
    /* Color Palette - Light Theme */
    --color-background: #f8fafc;
    --color-background-secondary: #f1f5f9;
    --color-background-tertiary: #e2e8f0;
    --color-surface: #ffffff;
    --color-surface-hover: #f1f5f9;

    /* Brand Colors - slightly adjusted for light mode contrast */
    --color-primary: #2050C0;
    --color-primary-dark: #183D90;
    --color-primary-light: #3B6CE0;

    --color-success: #059669;
    --color-success-dark: #047857;
    --color-success-light: #10b981;

    --color-warning: #d97706;
    --color-warning-dark: #b45309;
    --color-warning-light: #f59e0b;

    --color-danger: #E11D48;
    --color-danger-dark: #b91c1c;
    --color-danger-light: #ef4444;

    --color-text-primary: #1e293b;
    --color-text-secondary: #475569;
    --color-text-muted: #64748b;

    --color-border: #e2e8f0;
    --color-border-light: #cbd5e1;

    /* Gradient - adjusted for light mode */
    --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    --gradient-card-hover: linear-gradient(135deg, rgba(32, 80, 192, 0.08), rgba(244, 184, 96, 0.08));

    /* Shadows - lighter for light mode */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow-primary: 0 0 20px rgba(8, 145, 178, 0.2);
    --shadow-glow-accent: 0 0 20px rgba(244, 184, 96, 0.2);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

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

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

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

/* --------------------------------------------------------------------------
   Header Styles
   -------------------------------------------------------------------------- */
.main-header {
    position: relative;
    background-color: var(--color-background-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-xl) var(--spacing-2xl);
    text-align: center;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.logo-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.logo-icon svg {
    width: 72px;
    height: 72px;
    position: relative;
    z-index: 1;
}

.logo-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
}

.logo-title span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

.header-description {
    max-width: 600px;
    margin: 0 auto;
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
}

/* --------------------------------------------------------------------------
   Theme Toggle Button
   -------------------------------------------------------------------------- */
.theme-toggle {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    z-index: var(--z-sticky);
}

.theme-toggle:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow-primary);
}

.theme-toggle svg {
    width: 22px;
    height: 22px;
    stroke: var(--color-text-secondary);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: all var(--transition-normal);
}

.theme-toggle:hover svg {
    stroke: var(--color-primary);
}

/* Sun icon shown in dark mode, moon icon shown in light mode */
.theme-toggle .icon-sun {
    display: block;
}

.theme-toggle .icon-moon {
    display: none;
}

.light .theme-toggle .icon-sun {
    display: none;
}

.light .theme-toggle .icon-moon {
    display: block;
}

/* --------------------------------------------------------------------------
   Main Container
   -------------------------------------------------------------------------- */
.main-container {
    flex: 1;
    padding: var(--spacing-2xl);
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* --------------------------------------------------------------------------
   Navigation Grid
   -------------------------------------------------------------------------- */
.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   Navigation Card Styles
   -------------------------------------------------------------------------- */
.nav-card {
    position: relative;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.nav-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.nav-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow-primary);
    transform: translateY(-4px);
    background: var(--gradient-card-hover);
}

.nav-card:hover::before {
    opacity: 1;
}

.nav-card.active {
    cursor: pointer;
}

.nav-card.coming-soon {
    cursor: default;
    opacity: 0.7;
}

.nav-card.coming-soon:hover {
    border-color: var(--color-border);
    box-shadow: none;
    transform: none;
    background-color: var(--color-surface);
}

.nav-card.coming-soon:hover::before {
    opacity: 0;
}

/* Card Icon */
.card-icon {
    width: 56px;
    height: 56px;
    background-color: var(--color-background-tertiary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.card-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-primary);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.nav-card:hover .card-icon {
    background: var(--gradient-primary);
    box-shadow: var(--shadow-glow-primary);
}

.nav-card:hover .card-icon svg {
    stroke: var(--color-background);
}

.nav-card.coming-soon:hover .card-icon {
    background-color: var(--color-background-tertiary);
    box-shadow: none;
}

.nav-card.coming-soon:hover .card-icon svg {
    stroke: var(--color-primary);
}

/* Card Content */
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

.nav-card:hover .card-title {
    color: var(--color-primary);
}

.nav-card.coming-soon:hover .card-title {
    color: var(--color-text-primary);
}

.card-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* Card Arrow */
.card-arrow {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-top: auto;
    padding-top: var(--spacing-md);
}

.card-arrow svg {
    width: 20px;
    height: 20px;
    stroke: var(--color-text-muted);
    fill: none;
    stroke-width: 2;
    transition: all var(--transition-normal);
    transform: translateX(0);
}

.nav-card:hover .card-arrow svg {
    stroke: var(--color-primary);
    transform: translateX(4px);
}

.nav-card.coming-soon .card-arrow {
    display: none;
}

/* --------------------------------------------------------------------------
   Status Badge Styles
   -------------------------------------------------------------------------- */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.status-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.status-badge.active {
    background-color: rgba(43, 212, 167, 0.15);
    color: var(--color-success);
}

.status-badge.active::before {
    background-color: var(--color-success);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.status-badge.coming-soon {
    background-color: rgba(244, 184, 96, 0.15);
    color: var(--color-accent-light);
}

.status-badge.coming-soon::before {
    background-color: var(--color-accent-light);
}

/* --------------------------------------------------------------------------
   Coming Soon Overlay
   -------------------------------------------------------------------------- */
.coming-soon-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 5, 34, 0.8), rgba(13, 21, 40, 0.9));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(4px);
}

.nav-card.coming-soon:hover .coming-soon-overlay {
    opacity: 1;
    visibility: visible;
}

.coming-soon-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.coming-soon-text svg {
    width: 40px;
    height: 40px;
    stroke: var(--color-accent-light);
    fill: none;
    stroke-width: 1.5;
}

.coming-soon-text span {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent-light);
}

/* --------------------------------------------------------------------------
   Footer Styles
   -------------------------------------------------------------------------- */
.main-footer {
    background-color: var(--color-background-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) var(--spacing-2xl);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.footer-links a {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Responsive Breakpoints
   -------------------------------------------------------------------------- */

/* Large Tablet (1024px) */
@media (max-width: 1024px) {
    .nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet (768px) */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 1.875rem;
        --font-size-5xl: 2.25rem;
    }

    .main-header {
        padding: var(--spacing-lg) var(--spacing-md);
        padding-top: calc(var(--spacing-lg) + 50px);
    }

    .theme-toggle {
        top: var(--spacing-md);
        right: var(--spacing-md);
    }

    .logo-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .logo-text {
        align-items: center;
        text-align: center;
    }

    .logo-icon {
        width: 64px;
        height: 64px;
    }

    .logo-icon svg {
        width: 64px;
        height: 64px;
    }

    .main-container {
        padding: var(--spacing-lg);
    }

    .nav-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Mobile (480px) */
@media (max-width: 480px) {
    :root {
        --font-size-3xl: 1.5rem;
        --font-size-4xl: 1.75rem;
    }

    .main-header {
        padding: var(--spacing-md);
        padding-top: calc(var(--spacing-md) + 50px);
    }

    .theme-toggle {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        width: 40px;
        height: 40px;
    }

    .theme-toggle svg {
        width: 20px;
        height: 20px;
    }

    .logo-icon {
        width: 56px;
        height: 56px;
    }

    .logo-icon svg {
        width: 56px;
        height: 56px;
    }

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

    .main-container {
        padding: var(--spacing-md);
    }

    .nav-card {
        padding: var(--spacing-lg);
    }

    .card-icon {
        width: 48px;
        height: 48px;
    }

    .card-icon svg {
        width: 24px;
        height: 24px;
    }

    .card-title {
        font-size: var(--font-size-lg);
    }
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}