/* ============================================
   STUDIO NOIR — Design System
   ============================================ */

/* CSS Variables */
:root {
    /* Noir Editorial Palette */
    --color-bg: #0F0F0F;
    --color-bg-secondary: #1A1A1A;
    --color-bg-tertiary: #2A2A2A;
    --color-text: #E8E4DF;
    --color-text-muted: #A39E93;
    --color-accent: #C8B8A0;
    
    /* Typography */
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing Scale */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 8rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s 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;
}

/* Grain Overlay */
.grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-xl);
    z-index: 100;
    mix-blend-mode: difference;
}

.nav-brand {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

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

.nav-link {
    font-size: 0.875rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text);
    text-decoration: none;
    position: relative;
    transition: color var(--transition-fast);
}

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

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

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: var(--space-3xl) var(--space-xl);
    gap: var(--space-2xl);
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(4rem, 10vw, 8rem);
    font-weight: 400;
    line-height: 0.9;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
}

.hero-title .line {
    display: block;
}

.hero-title .accent {
    color: var(--color-accent);
    font-style: italic;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
    max-width: 400px;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
}

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

.hero-image-container {
    position: relative;
}

.hero-image-placeholder {
    width: 400px;
    height: 500px;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
    border: 1px solid var(--color-bg-tertiary);
}

.hero-caption {
    position: absolute;
    bottom: -var(--space-md);
    right: -var(--space-md);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-bg);
    border: 1px solid var(--color-bg-tertiary);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-decoration: none;
    border: 1px solid;
    cursor: pointer;
    transition: all var(--transition-medium);
}

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

.btn-primary:hover {
    background: transparent;
    color: var(--color-text);
}

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

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

/* ============================================
   SECTIONS
   ============================================ */

section {
    padding: var(--space-3xl) var(--space-xl);
}

.section-header {
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--color-bg-tertiary);
    padding-bottom: var(--space-md);
}

.section-number {
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--color-accent);
    font-style: italic;
}

.section-title {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
}

/* ============================================
   WORK SECTION
   ============================================ */

.work-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-lg);
}

.work-item {
    grid-column: span 6;
}

.work-item-large {
    grid-column: span 7;
    grid-row: span 2;
}

.work-item-wide {
    grid-column: span 12;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.work-image {
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.work-placeholder {
    aspect-ratio: 4/5;
    transition: transform var(--transition-slow);
}

.work-item:hover .work-placeholder {
    transform: scale(1.02);
}

.work-item-wide .work-placeholder {
    aspect-ratio: 16/9;
}

.work-category {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    display: block;
    margin-bottom: var(--space-xs);
}

.work-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--space-xs);
}

.work-item-large .work-title {
    font-size: 2rem;
}

.work-description {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-3xl);
    max-width: 1200px;
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
}

.about-lead {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 400;
    line-height: 1.3;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.about-text p + p {
    margin-top: var(--space-md);
    color: var(--color-text-muted);
}

.about-services {
    padding-left: var(--space-xl);
    border-left: 1px solid var(--color-bg-tertiary);
}

.services-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.services-list {
    list-style: none;
}

.services-list li {
    font-size: 0.9375rem;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-bg-tertiary);
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.services-list li:hover {
    color: var(--color-accent);
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    max-width: 1200px;
}

.contact-lead {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 400;
    line-height: 1.3;
    margin-bottom: var(--space-md);
}

.contact-info p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.contact-details {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-bg-tertiary);
}

.contact-link {
    font-size: 1.125rem;
    color: var(--color-text);
    text-decoration: none;
    position: relative;
    transition: color var(--transition-fast);
}

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

.contact-separator {
    margin: 0 var(--space-sm);
    color: var(--color-text-muted);
}

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

/* Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.form-group input,
.form-group textarea {
    padding: var(--space-sm);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-bg-tertiary);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    padding: var(--space-xl);
    border-top: 1px solid var(--color-bg-tertiary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.footer-brand {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
}

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

.footer-link {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-copyright {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

.animate-in {
    animation: fadeInUp 0.8s ease forwards;
}

/* Stagger delays */
.animate-in:nth-child(1) { animation-delay: 0.1s; }
.animate-in:nth-child(2) { animation-delay: 0.2s; }
.animate-in:nth-child(3) { animation-delay: 0.3s; }
.animate-in:nth-child(4) { animation-delay: 0.4s; }

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: calc(var(--space-3xl) + var(--space-xl));
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .about-services {
        padding-left: 0;
        border-left: none;
        border-top: 1px solid var(--color-bg-tertiary);
        padding-top: var(--space-xl);
    }
}

@media (max-width: 768px) {
    :root {
        --space-xl: 2rem;
        --space-2xl: 3rem;
        --space-3xl: 4rem;
    }
    
    .nav {
        padding: var(--space-md);
    }
    
    .nav-links {
        gap: var(--space-md);
    }
    
    section {
        padding: var(--space-2xl) var(--space-md);
    }
    
    .work-item,
    .work-item-large,
    .work-item-wide {
        grid-column: span 12;
    }
    
    .work-item-wide {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--space-md);
    }
}