/* === COLOR SYSTEM & THEME VARIABLES === */
:root {
    --bg: #fdfcf8;
    --text: #1a1a1a;
    --text-muted: #666666;
    --accent: #ff611a;
    --line: rgba(26, 26, 26, 0.08);
    
    /* Dynamic Glass Variables */
    --nav-scrolled: rgba(253, 252, 248, 0.9);
    --scrollbar-thumb: rgba(26, 26, 26, 0.2);
    --glass-bg: rgba(255, 255, 255, 0.4);
    --glass-border-light: rgba(255, 255, 255, 0.8);
    --glass-border-dark: rgba(255, 255, 255, 0.2);
    --glass-grad-1: rgba(255, 255, 255, 0.6);
    --glass-grad-2: rgba(255, 255, 255, 0.1);
    --glass-hover-bg: #fff;
    --glass-shine: rgba(255, 255, 255, 0.5);
    --tech-bg: rgba(255, 255, 255, 0.5);
    --tech-border: rgba(26, 26, 26, 0.1);
    
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Manrope', sans-serif;
    --font-mono: 'Courier New', Courier, monospace;
}

[data-theme="dark"] {
    --bg: #09090b;
    --text: #f0f0f0;
    --text-muted: #888888;
    --line: rgba(255, 255, 255, 0.08);
    
    /* Dark Mode Glass Variables */
    --nav-scrolled: rgba(9, 9, 11, 0.9);
    --scrollbar-thumb: rgba(255, 255, 255, 0.2);
    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-border-light: rgba(255, 255, 255, 0.1);
    --glass-border-dark: rgba(255, 255, 255, 0.02);
    --glass-grad-1: rgba(255, 255, 255, 0.05);
    --glass-grad-2: rgba(255, 255, 255, 0.01);
    --glass-hover-bg: rgba(255, 255, 255, 0.05);
    --glass-shine: rgba(255, 255, 255, 0.1);
    --tech-bg: rgba(255, 255, 255, 0.05);
    --tech-border: rgba(255, 255, 255, 0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

/* === CUSTOM SCROLLBAR === */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 10px;
    transition: background 0.3s ease;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent); }
html { scrollbar-width: thin; scrollbar-color: var(--scrollbar-thumb) transparent; }

/* LENIS RECOMMENDED CSS */
html.lenis { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }
.lenis.lenis-scrolling iframe { pointer-events: none; }

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

/* === NOISE TEXTURE === */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none; z-index: -1;
}

/* === AMBIENT LIGHT === */
.ambient-glow {
    position: fixed;
    top: -20%; right: -10%; width: 70vw; height: 70vw;
    background: radial-gradient(circle, rgba(255, 97, 26, 0.05) 0%, transparent 70%);
    pointer-events: none; z-index: -1;
    animation: breathe 8s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

/* === TYPOGRAPHY === */
h1, h2, h3 { font-family: var(--font-serif); font-weight: 400; }
h1 { 
    font-size: clamp(3.5rem, 7vw, 6.5rem); 
    letter-spacing: -0.02em; 
    line-height: 0.95;
}
h2 { font-size: clamp(2rem, 5vw, 3.5rem); margin-bottom: 2rem; }
h3 {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}
p { 
    font-size: clamp(1rem, 1.1vw, 1.15rem); 
    color: var(--text-muted); 
    font-weight: 300; 
    max-width: 65ch; 
}

/* === NAVBAR === */
nav {
    position: fixed;
    top: 0; left: 0; width: 100%;
    padding: 1.5rem 5%;
    z-index: 1000;
    display: flex; justify-content: space-between; align-items: center;
    transition: all 0.4s ease;
}

nav.scrolled {
    background: var(--nav-scrolled);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    padding: 1rem 5%;
}

.brand { display: flex; align-items: center; gap: 1rem; }
.avatar {
    width: 45px; height: 45px;
    border-radius: 50%; object-fit: cover;
    border: 2px solid var(--line);
}

.brand-name {
    font-family: var(--font-serif);
    font-weight: 600; font-size: 1.2rem;
    letter-spacing: 0.02em; color: var(--text);
}

.nav-links { display: flex; gap: 2.5rem; }

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.8rem; font-weight: 700;
    text-transform: uppercase; text-decoration: none;
    color: var(--text); position: relative;
    transition: all 0.3s ease; cursor: pointer;
}

.nav-link:hover {
    color: var(--accent);
    text-shadow: 0 0 12px rgba(255, 97, 26, 0.4);
}

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

/* === CONTAINER === */
.container { width: 90%; max-width: 1400px; margin: 0 auto; }
section { padding: 8rem 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: none; }

/* === HERO === */
.hero {
    min-height: 100vh;
    display: flex; align-items: center;
    padding-top: 0; position: relative;
}

.hero-grid {
    display: grid; grid-template-columns: 1.2fr 1fr;
    gap: 2rem; align-items: center; width: 100%;
}

.hero-tag {
    font-family: var(--font-mono);
    color: var(--accent); font-size: 0.9rem;
    margin-bottom: 1rem;
}

.typewriter {
    border-right: 3px solid var(--accent);
    padding-right: 8px;
    animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { border-color: transparent; } }

.hero-visual {
    position: relative; height: 500px;
    display: flex; justify-content: center; align-items: center;
}
canvas#hero-canvas { width: 100%; height: 100%; cursor: crosshair; }

/* Scroll Indicator */
.scroll-indicator {
    position: absolute; bottom: 2.5rem; left: 50%;
    transform: translateX(-50%);
    display: flex; flex-direction: column; align-items: center;
    gap: 0.8rem; opacity: 0.4; transition: opacity 0.3s;
}
.scroll-indicator:hover { opacity: 1; }
.mouse-icon {
    width: 22px; height: 36px;
    border: 1.5px solid var(--text); border-radius: 12px;
    position: relative;
}
.mouse-wheel {
    width: 2px; height: 6px;
    background: var(--accent);
    position: absolute; top: 6px; left: 50%;
    transform: translateX(-50%); border-radius: 2px;
    animation: scroll-wheel 1.5s ease-in-out infinite;
}
@keyframes scroll-wheel {
    0% { top: 6px; opacity: 1; }
    100% { top: 18px; opacity: 0; }
}

/* === GLASS PANEL & LAYOUT === */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border-light);
    padding: 3rem;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.02);
}

.grid-2 {
    display: grid; grid-template-columns: 1.2fr 0.8fr;
    gap: 6rem; align-items: start;
}

.tag-cloud {
    display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1rem;
}
.tag {
    font-family: var(--font-mono); font-size: 0.75rem;
    padding: 0.4rem 0.8rem; border: 1px solid var(--line);
    color: var(--text-muted); transition: all 0.3s;
}
.tag:hover { border-color: var(--accent); color: var(--accent); }

/* === LIBRARY & RESEARCH CARDS (PREMIUM GLASS) === */
.library-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem; margin-top: 2rem;
}

.book-card, .project-card {
    position: relative; overflow: hidden;
    background: linear-gradient(135deg, var(--glass-grad-1) 0%, var(--glass-grad-2) 100%);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border-light);
    border-left: 1px solid var(--glass-border-light);
    border-right: 1px solid var(--glass-border-dark);
    border-bottom: 1px solid var(--glass-border-dark);
    border-radius: 2px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.03);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none; color: inherit;
}

.book-card { padding: 2.5rem 2rem; min-height: 240px; display: flex; flex-direction: column; justify-content: space-between; }
.project-card { margin-bottom: 4rem; padding: 3.5rem; }

.book-card::before, .project-card::before {
    content: ''; position: absolute;
    top: 0; left: -150%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, var(--glass-shine), transparent);
    transform: skewX(-25deg); transition: 0.7s;
    pointer-events: none; z-index: 1;
}
.book-card:hover::before, .project-card:hover::before { left: 150%; }

.book-card:hover, .project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.05);
    border-top-color: var(--glass-border-light);
}

.book-arrow {
    display: inline-block; font-family: var(--font-mono);
    color: var(--accent); font-size: 0.9em; margin-left: 8px;
    opacity: 0.8; transition: transform 0.3s ease;
}
.book-card:hover .book-arrow { transform: translate(3px, -3px); opacity: 1; }

.book-title { font-family: var(--font-serif); font-size: 1.6rem; line-height: 1.1; margin-bottom: 0.5rem; color: var(--text); position: relative; z-index: 2; }
.book-author { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; position: relative; z-index: 2; }
.book-desc { font-size: 0.85rem; color: var(--text-muted); margin-top: 1.5rem; line-height: 1.5; opacity: 0.8; position: relative; z-index: 2; }

.project-header {
    display: flex; justify-content: space-between; align-items: baseline;
    border-bottom: 1px solid var(--line);
    padding-bottom: 1.5rem; margin-bottom: 2rem;
    position: relative; z-index: 2;
}
.project-title { font-family: var(--font-serif); font-size: 2.4rem; color: var(--text); transition: color 0.3s; }
.project-card:hover .project-title { color: var(--accent); }
.project-tech {
    font-family: var(--font-mono); font-size: 0.75rem; font-weight: 600;
    color: var(--text-muted); border: 1px solid var(--tech-border);
    padding: 0.4rem 0.8rem; border-radius: 100px;
    background: var(--tech-bg);
}
.project-index {
    position: absolute; top: -1rem; right: 1.5rem;
    font-family: var(--font-serif); font-size: 8rem; line-height: 1;
    color: var(--text); opacity: 0.03; pointer-events: none; z-index: 0; font-style: italic;
}

/* === CONTACT === */
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.contact-info { display: flex; flex-direction: column; justify-content: center; }
.contact-links { display: flex; flex-direction: column; gap: 1rem; }

.contact-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.5rem; border: 1px solid var(--line);
    background: var(--glass-bg);
    text-decoration: none; color: var(--text);
    transition: all 0.3s;
}
.contact-row:hover { background: var(--glass-hover-bg); border-color: var(--accent); padding-left: 2rem; }
.contact-label { font-family: var(--font-mono); color: var(--text-muted); font-size: 0.75rem; letter-spacing: 0.1em; }
.contact-value { font-family: var(--font-mono); font-weight: 700; color: var(--text); transition: color 0.3s; }
.contact-row:hover .contact-value { color: var(--accent); }
.contact-row.highlighted { border-color: var(--accent); }
.contact-row.highlighted .contact-label, .contact-row.highlighted .contact-value { color: var(--accent); }

/* === FOOTER === */
footer { padding: 4rem 0; text-align: center; font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); opacity: 0.6; }

/* === ANIMATIONS (STAGGERED) === */
.reveal > * {
    opacity: 0;
    transform: translateY(30px);
    transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.active > * {
    opacity: 1;
    transform: translateY(0);
}
.reveal.active > *:nth-child(1) { transition-delay: 0.1s; }
.reveal.active > *:nth-child(2) { transition-delay: 0.2s; }
.reveal.active > *:nth-child(3) { transition-delay: 0.3s; }
.reveal.active > *:nth-child(4) { transition-delay: 0.4s; }
.reveal.active > *:nth-child(5) { transition-delay: 0.5s; }
.reveal.active > *:nth-child(6) { transition-delay: 0.6s; }

/* === RESPONSIVE === */
@media (max-width: 850px) {
    .nav-links { display: none; }
    .hero-grid { grid-template-columns: 1fr; gap: 4rem; }
    .hero-visual { height: 350px; order: -1; }
    .grid-2, .contact-layout { grid-template-columns: 1fr; gap: 3rem; }
    .project-header { flex-direction: column; gap: 1rem; align-items: flex-start; }
    .library-grid { grid-template-columns: 1fr; }
    h1 { font-size: 3.5rem; }
    .project-index { font-size: 5rem; top: 1rem; }
}