/* ============================================
   LAYLA - Luxury Abaya Store
   Design System: Noir Editorial
   ============================================ */

/* CSS Variables */
:root {
    /* Colors - Noir Editorial Palette */
    --color-bg: #0F0F0F;
    --color-surface: #2A2A2A;
    --color-text: #E8E4DF;
    --color-text-muted: #A39E93;
    --color-accent: #C8B8A0;
    --color-accent-hover: #D4C5A9;
    
    /* Typography */
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Manrope', -apple-system, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 10rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

body {
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 300;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(3rem, 8vw, 6rem); }
h2 { font-size: clamp(2rem, 5vw, 3.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 0.875rem; font-family: var(--font-body); font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; }

p {
    color: var(--color-text-muted);
    max-width: 65ch;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-md) var(--space-lg);
    transition: background var(--transition-base), padding var(--transition-base);
}

.nav.scrolled {
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(20px);
    padding: var(--space-sm) var(--space-lg);
}

.nav-container {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    color: var(--color-text);
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-links a {
    font-size: 0.8125rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-links a:hover {
    color: var(--color-text);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: var(--space-sm);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    padding: var(--space-xs);
    transition: color var(--transition-fast);
}

.icon-btn:hover {
    color: var(--color-accent);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 1px;
    background: var(--color-text);
    transition: transform var(--transition-base);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    overflow: hidden;
}

.hero-image {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.hero-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, var(--color-bg) 0%, var(--color-bg) 40%, transparent 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: var(--space-3xl) var(--space-xl);
    max-width: 700px;
}

.hero-eyebrow {
    display: block;
    font-size: 0.75rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.hero-title {
    margin-bottom: var(--space-md);
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-subtitle {
    font-size: 1.125rem;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-xl);
    left: var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
    animation: fadeIn 1s ease 1s both;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: var(--color-text-muted);
    animation: scrollLine 2s ease-in-out infinite;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-text-muted);
}

.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn-text {
    background: none;
    padding: 0;
    color: var(--color-accent);
    gap: var(--space-xs);
}

.btn-text .arrow {
    transition: transform var(--transition-base);
}

.btn-text:hover .arrow {
    transform: translateX(4px);
}

/* ============================================
   Section Styles
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-eyebrow {
    display: block;
    font-size: 0.75rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.section-title {
    margin-bottom: var(--space-sm);
}

/* ============================================
   Collection Section
   ============================================ */
.collection {
    padding: var(--space-3xl) var(--space-xl);
    max-width: 1600px;
    margin: 0 auto;
}

.collection-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.collection-card {
    position: relative;
}

.collection-card.featured {
    grid-column: span 2;
    grid-row: span 2;
}

.card-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 3/4;
    margin-bottom: var(--space-md);
}

.collection-card.featured .card-image {
    aspect-ratio: 1/1;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.card-overlay {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
}

.card-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-accent);
    color: var(--color-bg);
    font-size: 0.625rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.card-content h3 {
    margin-bottom: var(--space-xs);
}

.card-price {
    font-family: var(--font-display);
    font-size: 1.125rem;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.card-link {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-fast);
}

.card-link:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.collection-card:hover .card-image img {
    transform: scale(1.05);
}

/* ============================================
   New Arrivals Section
   ============================================ */
.new-arrivals {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    min-height: 80vh;
    background: var(--color-surface);
}

.arrivals-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-3xl);
}

.arrivals-text {
    font-size: 1.125rem;
    margin: var(--space-md) 0 var(--space-lg);
}

.arrivals-image {
    position: relative;
    overflow: hidden;
}

.arrivals-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: var(--space-3xl) var(--space-xl);
    border-top: 1px solid var(--color-surface);
    border-bottom: 1px solid var(--color-surface);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border: 1px solid var(--color-surface);
    border-radius: 50%;
    margin-bottom: var(--space-md);
    color: var(--color-accent);
}

.feature h3 {
    margin-bottom: var(--space-xs);
    font-size: 1.125rem;
}

.feature p {
    font-size: 0.9375rem;
}

/* ============================================
   About Section
   ============================================ */
.about {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    padding: var(--space-3xl);
    max-width: 1600px;
    margin: 0 auto;
    align-items: center;
}

.about-image {
    position: relative;
    overflow: hidden;
}

.about-image img {
    width: 100%;
    aspect-ratio: 4/5;
    object-fit: cover;
}

.about-content {
    padding: var(--space-xl) 0;
}

.about-content .section-title {
    margin-bottom: var(--space-md);
}

.about-content p {
    margin-bottom: var(--space-md);
    font-size: 1.0625rem;
}

/* ============================================
   Newsletter Section
   ============================================ */
.newsletter {
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
    background: var(--color-surface);
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-content p {
    margin: var(--space-md) 0 var(--space-lg);
}

.newsletter-form {
    display: flex;
    gap: var(--space-sm);
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 1rem 1.5rem;
    background: var(--color-bg);
    border: 1px solid var(--color-surface);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.newsletter-form input:focus {
    border-color: var(--color-accent);
}

.newsletter-form input::placeholder {
    color: var(--color-text-muted);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--space-3xl) var(--space-xl) var(--space-xl);
    border-top: 1px solid var(--color-surface);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--space-xl);
    max-width: 1400px;
    margin: 0 auto var(--space-2xl);
}

.footer-brand .logo {
    display: inline-block;
    margin-bottom: var(--space-md);
}

.footer-brand p {
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
    max-width: 300px;
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-links a {
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.social-links a:hover {
    color: var(--color-accent);
}

.footer-links h4 {
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.footer-links li {
    margin-bottom: var(--space-xs);
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-surface);
    max-width: 1400px;
    margin: 0 auto;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.footer-legal {
    display: flex;
    gap: var(--space-lg);
}

.footer-legal a:hover {
    color: var(--color-text);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scrollLine {
    0%, 100% { transform: scaleY(1); transform-origin: top; }
    50% { transform: scaleY(0); transform-origin: top; }
    51% { transform-origin: bottom; }
    52% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1200px) {
    .collection-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .collection-card.featured {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .collection-card.featured .card-image {
        aspect-ratio: 16/9;
    }
}

@media (max-width: 900px) {
    .nav-links {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero {
        grid-template-columns: 1fr;
    }
    
    .hero-image::after {
        background: linear-gradient(180deg, var(--color-bg) 0%, transparent 50%, var(--color-bg) 100%);
    }
    
    .hero-content {
        padding: var(--space-2xl) var(--space-lg);
        text-align: center;
        margin: 0 auto;
    }
    
    .new-arrivals {
        grid-template-columns: 1fr;
    }
    
    .arrivals-image {
        min-height: 50vh;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .about {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .about-image img {
        aspect-ratio: 16/9;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    :root {
        --space-xl: 2rem;
        --space-2xl: 3rem;
        --space-3xl: 4rem;
    }
    
    .collection-grid {
        grid-template-columns: 1fr;
    }
    
    .collection-card.featured {
        grid-column: span 1;
    }
    
    .collection-card.featured .card-image {
        aspect-ratio: 3/4;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand p {
        margin: 0 auto var(--space-lg);
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}