/* ==========================================================================
   CSS VARIABLES & RESET (Clay.global Inspired)
   ========================================================================== */
:root {
    --font-sans: 'Inter', sans-serif;
    --font-serif: 'Playfair Display', serif;
    
    --bg-base: #0a0a0a;
    --bg-surface: #141414;
    --bg-surface-hover: #1f1f1f;
    
    --text-primary: #f5f5f5;
    --text-secondary: #888888;
    --text-muted: #555555;
    --accent: #ffffff;
    
    --tag-bg: #222222;
    --tag-text: #aaaaaa;
    
    --border-color: #2a2a2a;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --nav-height: 80px;
    --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background-color: var(--bg-base);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; transition: color 0.3s; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; }

/* Typography Hierarchy */
h1, h2, h3, h4, .serif-text {
    font-family: var(--font-serif);
    font-weight: 500;
    color: var(--text-primary);
}

h1 { font-size: clamp(3.5rem, 8vw, 6rem); line-height: 1.05; letter-spacing: -0.03em; }
h2 { font-size: clamp(2.5rem, 5vw, 3.5rem); line-height: 1.1; letter-spacing: -0.02em; }
h3 { font-size: 1.75rem; line-height: 1.2; }

.text-body { font-size: clamp(1rem, 1.5vw, 1.125rem); color: var(--text-secondary); line-height: 1.8; }
.text-lead { font-size: clamp(1.125rem, 2vw, 1.35rem); color: var(--text-secondary); line-height: 1.7; }

.tag {
    display: inline-block;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: var(--tag-bg);
    color: var(--tag-text);
    padding: 0.4rem 0.8rem;
    border-radius: 100px;
    font-weight: 600;
}

/* ==========================================================================
   ROUTING & LAYOUT SYSTEM
   ========================================================================== */
.page-view {
    display: none;
    opacity: 0;
    animation: fadeInView 0.6s var(--ease-out) forwards;
}
.page-view.active { display: block; }

@keyframes fadeInView {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

.section {
    padding: 8rem 0;
    position: relative;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.site-nav {
    position: fixed; top: 0; left: 0; width: 100%;
    height: var(--nav-height);
    background: rgba(10, 10, 10, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 5%;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition: transform 0.4s var(--ease-out);
}

.nav-logo { font-family: var(--font-serif); font-weight: 600; font-size: 1.5rem; letter-spacing: -0.02em; color: var(--text-primary); }
.nav-links { display: flex; gap: 2.5rem; align-items: center; }
.nav-links a { font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active-link { color: var(--text-primary); }

.btn-primary {
    background: var(--accent); color: var(--bg-base);
    padding: 0.75rem 1.5rem; border-radius: 100px; font-weight: 600; font-size: 0.9rem;
    transition: transform 0.2s, background 0.2s; border: none;
    display: inline-flex; align-items: center; gap: 0.5rem;
}
.btn-primary:hover { transform: translateY(-2px); background: #e0e0e0; color: var(--bg-base); }

.btn-secondary {
    background: transparent; color: var(--text-primary); border: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem; border-radius: 100px; font-weight: 500; font-size: 0.9rem;
    transition: all 0.2s; display: inline-flex; align-items: center; justify-content: center;
}
.btn-secondary:hover { background: var(--bg-surface); border-color: var(--text-muted); }

/* ==========================================================================
   HOMEPAGE (EDITORIAL LAYOUT)
   ========================================================================== */

/* Hero */
.hero {
    min-height: 100vh;
    display: flex; flex-direction: column; justify-content: center;
    padding-top: var(--nav-height);
    position: relative;
}

.hero-inner { max-width: 1000px; }
.hero p { margin-top: 2rem; max-width: 500px; }

.scroll-indicator {
    position: absolute; bottom: 40px; left: 5%;
    font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em;
    color: var(--text-secondary); display: flex; align-items: center; gap: 10px;
}
.scroll-indicator::after {
    content: ''; width: 1px; height: 40px; background: var(--border-color);
    display: block; animation: stretchDown 2s infinite var(--ease-out);
}
@keyframes stretchDown { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 50.1% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* Marquee */
.marquee-wrap {
    overflow: hidden; white-space: nowrap; padding: 4rem 0;
    border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color);
    background: var(--bg-surface);
}
.marquee-track {
    display: inline-block;
    animation: marquee 30s linear infinite;
}
.marquee-track span {
    display: inline-block; margin-right: 6rem;
    font-family: var(--font-serif); font-size: 1.5rem; font-style: italic;
    color: var(--text-muted); font-weight: 400;
}
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* Services Stack */
.service-row {
    display: grid; grid-template-columns: 1fr 2fr; gap: 4rem;
    padding: 4rem 0; border-bottom: 1px solid var(--border-color);
    transition: background 0.3s;
}
.service-row:hover { background: rgba(255,255,255,0.02); }
.service-number { font-size: 1rem; color: var(--text-muted); font-family: var(--font-sans); margin-bottom: 1rem; display: block;}
.service-title { font-size: 2.5rem; margin-bottom: 1rem; }
.service-desc { color: var(--text-secondary); max-width: 500px; }

/* Portfolio Masonry */
.masonry-grid {
    column-count: 2;
    column-gap: 2rem;
    margin-top: 4rem;
}
.masonry-item {
    break-inside: avoid;
    margin-bottom: 2rem;
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    group: portfolio-card;
    border: 1px solid var(--border-color);
}

.masonry-img-wrap {
    width: 100%; position: relative; overflow: hidden;
    aspect-ratio: 4/3; background: #1a1a1a;
}
.masonry-item.tall .masonry-img-wrap { aspect-ratio: 3/4; }

.masonry-img-wrap img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.6s var(--ease-out), filter 0.6s;
    filter: grayscale(20%);
}

.masonry-overlay {
    position: absolute; inset: 0; background: rgba(0,0,0,0.6);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity 0.4s;
}

.masonry-item:hover .masonry-img-wrap img { transform: scale(1.05); filter: grayscale(0%); }
.masonry-item:hover .masonry-overlay { opacity: 1; }

.masonry-content { padding: 2rem; }
.masonry-title { font-size: 1.5rem; margin-bottom: 0.5rem; }
.masonry-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1rem; }

/* ==========================================================================
   SUB-PAGES: CLEAN EDITORIAL LAYOUT
   ========================================================================== */
.page-container {
    max-width: 1200px; margin: 0 auto; padding: calc(var(--nav-height) + 6rem) 5% 4rem;
}

.sub-nav {
    display: flex; gap: 1rem; margin-bottom: 4rem; flex-wrap: wrap; 
    border-bottom: 1px solid var(--border-color); padding-bottom: 1.5rem;
}
.sub-nav a { 
    font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); 
    padding: 0.5rem 1.25rem; border-radius: 100px; transition: 0.2s;
    border: 1px solid transparent;
}
.sub-nav a:hover, .sub-nav a.active { 
    background: var(--bg-surface); color: var(--text-primary); border-color: var(--border-color);
}

.page-header { margin-bottom: 5rem; max-width: 800px; }
.page-title { margin-bottom: 1.5rem; }

/* Grid Layouts */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }

.card {
    background: var(--bg-surface); border: 1px solid var(--border-color);
    border-radius: var(--radius-md); padding: 3rem 2.5rem;
    transition: transform 0.3s, border-color 0.3s;
}
.card:hover { transform: translateY(-4px); border-color: var(--text-muted); }
.card h3 { font-size: 1.5rem; margin-bottom: 1rem; font-family: var(--font-sans); font-weight: 500;}
.card p { color: var(--text-secondary); font-size: 0.95rem; }

/* Vertical Timeline */
.v-timeline { position: relative; padding-left: 2rem; border-left: 1px solid var(--border-color); margin-top: 2rem;}
.v-item { position: relative; margin-bottom: 4rem; }
.v-item::before {
    content: ''; position: absolute; left: -2.35rem; top: 0.3rem; width: 12px; height: 12px;
    background: var(--bg-base); border: 2px solid var(--text-primary); border-radius: 50%;
}
.v-item h3 { font-family: var(--font-sans); font-size: 1.25rem; margin-bottom: 0.5rem;}

/* Highlight Boxes */
.highlight-box {
    background: var(--bg-surface); padding: 2.5rem; border-radius: var(--radius-md);
    border: 1px solid var(--border-color); border-left: 4px solid var(--text-primary);
    margin: 3rem 0;
}

/* Forms */
.form-group { margin-bottom: 2rem; }
.form-label { display: block; font-weight: 500; margin-bottom: 0.75rem; font-size: 0.85rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em;}
.form-control {
    width: 100%; padding: 1.25rem; border: 1px solid var(--border-color);
    border-radius: var(--radius-sm); font-family: inherit; font-size: 1rem;
    transition: border-color 0.2s, background 0.2s; background: var(--bg-base);
    color: var(--text-primary);
}
.form-control:focus { outline: none; border-color: var(--text-primary); background: var(--bg-surface); }
.form-control::placeholder { color: var(--text-muted); }
textarea.form-control { resize: vertical; min-height: 180px; }

/* ==========================================================================
   GLOBAL FOOTER
   ========================================================================== */
.site-footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-base);
    padding: 6rem 5% 2rem;
    margin-top: auto;
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 4rem;
    max-width: 1400px; margin: 0 auto; margin-bottom: 4rem;
}
.footer-col h4 { font-family: var(--font-sans); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); margin-bottom: 1.5rem; }
.footer-col ul li { margin-bottom: 0.75rem; }
.footer-col a { color: var(--text-secondary); font-size: 0.95rem; }
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
    max-width: 1400px; margin: 0 auto; border-top: 1px solid var(--border-color);
    padding-top: 2rem; display: flex; justify-content: space-between;
    font-size: 0.85rem; color: var(--text-muted);
}

/* ==========================================================================
   ANIMATIONS & UTILS
   ========================================================================== */
.reveal-up {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal-up.in-view { opacity: 1; transform: translateY(0); }

.delay-1 { transition-delay: 0.1s !important; }
.delay-2 { transition-delay: 0.2s !important; }
.delay-3 { transition-delay: 0.3s !important; }

@media (max-width: 1024px) {
    .service-row { grid-template-columns: 1fr; gap: 1rem; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .masonry-grid { column-count: 1; }
    .footer-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    h1 { font-size: 3rem; }
    h2 { font-size: 2rem; }
}