/* ========================================
   FashionAI - Shared Styles
   Premium Dark Theme with Glass Morphism
======================================== */

/* ========================================
   CSS Variables & Design Tokens
======================================== */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a28;
    --bg-card: rgba(26, 26, 40, 0.6);
    --bg-glass: rgba(255, 255, 255, 0.03);

    /* Accent Colors */
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #a855f7;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --accent-glow: rgba(99, 102, 241, 0.4);

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);
    --text-muted: rgba(255, 255, 255, 0.3);

    /* Status Colors */
    --success: #22c55e;
    --success-glow: rgba(34, 197, 94, 0.3);
    --warning: #f59e0b;
    --error: #ef4444;
    --error-glow: rgba(239, 68, 68, 0.3);

    /* Class Colors */
    --class-tshirt: #f87171;
    --class-dress: #34d399;
    --class-jacket: #60a5fa;
    --class-pants: #a78bfa;
    --class-shirt: #fbbf24;
    --class-short: #f472b6;
    --class-skirt: #38bdf8;
    --class-sweater: #fb923c;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    --spacing-4xl: 96px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--accent-glow);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Glass Effect */
    --glass-blur: blur(20px);
    --glass-border: 1px solid rgba(255, 255, 255, 0.08);
}

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

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

/* Page transition animation */
@keyframes pageTransition {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    animation: pageTransition 0.4s ease;
}

/* Background Effects */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 100% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 0% 80%, rgba(168, 85, 247, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ========================================
   Navigation Bar
======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 72px;
    padding: 0 var(--spacing-xl);
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: var(--glass-blur);
    border-bottom: var(--glass-border);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
}

.navbar__container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.navbar__brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-base);
}

.navbar__brand:hover {
    transform: scale(1.02);
}

.navbar__brand-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    color: white;
}

.navbar__brand-icon .material-icons-outlined {
    font-size: 24px;
}

.navbar__links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.navbar__link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.navbar__link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.navbar__link.active {
    color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.navbar__link .material-icons-outlined {
    font-size: 20px;
}

.navbar__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 600;
    color: white;
    transition: all var(--transition-base);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.navbar__cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.navbar__cta .material-icons-outlined {
    font-size: 18px;
}

/* Mobile Menu Toggle */
.navbar__toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-sm);
}

.navbar__toggle .material-icons-outlined {
    font-size: 28px;
}

/* ========================================
   Buttons
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn--primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.btn--secondary {
    background: var(--bg-glass);
    border: var(--glass-border);
    color: var(--text-secondary);
}

.btn--secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.btn--large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
    border-radius: var(--radius-lg);
}

.btn .material-icons-outlined {
    font-size: 20px;
}

/* ========================================
   Cards
======================================== */
.card {
    background: var(--bg-card);
    border: var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    backdrop-filter: var(--glass-blur);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ========================================
   Section Styles
======================================== */
.section {
    padding: var(--spacing-4xl) var(--spacing-xl);
}

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

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-lg);
}

.section__title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-md);
}

.section__subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Footer
======================================== */
.footer {
    padding: var(--spacing-3xl) var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    background: var(--bg-secondary);
}

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

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.footer__brand .material-icons-outlined {
    font-size: 28px;
    color: var(--accent-primary);
}

.footer__desc {
    color: var(--text-tertiary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.footer__social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-glass);
    border: var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.footer__social-link:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.footer__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__link {
    color: var(--text-tertiary);
    font-size: 0.9375rem;
    transition: all var(--transition-base);
}

.footer__link:hover {
    color: var(--accent-primary);
    transform: translateX(4px);
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__copyright {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer__tech {
    display: flex;
    gap: var(--spacing-sm);
}

.tech-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border: var(--glass-border);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.tech-badge:hover {
    background: rgba(255, 255, 255, 0.08);
}

.tech-badge .material-icons-outlined {
    font-size: 14px;
}

/* ========================================
   Animations
======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.7;
        transform: scale(0.95);
    }
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in {
    animation: fadeIn 0.4s ease forwards;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* Stagger children animation */
.stagger-children>* {
    opacity: 0;
    animation: fadeInUp 0.5s ease forwards;
}

.stagger-children>*:nth-child(1) {
    animation-delay: 0.1s;
}

.stagger-children>*:nth-child(2) {
    animation-delay: 0.2s;
}

.stagger-children>*:nth-child(3) {
    animation-delay: 0.3s;
}

.stagger-children>*:nth-child(4) {
    animation-delay: 0.4s;
}

.stagger-children>*:nth-child(5) {
    animation-delay: 0.5s;
}

.stagger-children>*:nth-child(6) {
    animation-delay: 0.6s;
}

.stagger-children>*:nth-child(7) {
    animation-delay: 0.7s;
}

.stagger-children>*:nth-child(8) {
    animation-delay: 0.8s;
}

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

    .section {
        padding: var(--spacing-3xl) var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 24px;
        --spacing-2xl: 32px;
        --spacing-3xl: 48px;
        --spacing-4xl: 64px;
    }

    .navbar {
        padding: 0 var(--spacing-md);
    }

    .navbar__links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: var(--glass-blur);
        padding: var(--spacing-md);
        border-bottom: var(--glass-border);
        gap: var(--spacing-xs);
    }

    .navbar__links.show {
        display: flex;
    }

    .navbar__link {
        padding: var(--spacing-md);
        width: 100%;
        justify-content: flex-start;
    }

    .navbar__toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .navbar__cta {
        display: none;
    }

    .section {
        padding: var(--spacing-2xl) var(--spacing-md);
    }

    .section__title {
        font-size: 1.75rem;
    }

    .section__subtitle {
        font-size: 1rem;
    }

    .btn--large {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: 1rem;
    }

    .footer {
        padding: var(--spacing-2xl) var(--spacing-md);
    }

    .footer__grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }

    .footer__social {
        justify-content: center;
    }

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

    .footer__tech {
        justify-content: center;
        flex-wrap: wrap;
    }

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

@media (max-width: 480px) {
    .navbar__brand {
        font-size: 1.25rem;
    }

    .navbar__brand-icon {
        width: 36px;
        height: 36px;
    }

    .navbar__brand-icon .material-icons-outlined {
        font-size: 20px;
    }

    .section__title {
        font-size: 1.5rem;
    }

    .btn {
        width: 100%;
    }
}