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

:root {
    --bg:        #0e0f11;
    --bg2:       #13151a;
    --bg3:       #1a1d24;
    --border:    rgba(255,255,255,0.07);
    --text:      #e8e2d6;
    --muted:     #7a7670;
    --accent:    #4af0c4;
    --accent2:   #f0a84a;
    --serif:     'Cormorant Garamond', Georgia, serif;
    --mono:      'JetBrains Mono', monospace;
    --sans:      'DM Sans', sans-serif;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-weight: 300;
    line-height: 1.7;
    overflow-x: hidden;
}

/* ── NOISE OVERLAY ── */
body::before {
    content: '';
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
    opacity: 0.4;
}

/* ── NAV ── */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.25rem 4rem;
    background: rgba(14,15,17,0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.nav-logo {
    font-family: var(--serif); font-size: 1.2rem; font-weight: 400;
    color: var(--text); text-decoration: none; letter-spacing: 0.02em;
}
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a {
    font-family: var(--mono); font-size: 0.7rem; font-weight: 400;
    color: var(--muted); text-decoration: none; letter-spacing: 0.15em;
    text-transform: uppercase; transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

/* ── SECTIONS ── */
section { position: relative; z-index: 1; }

/* ── HERO ── */
#hero {
    min-height: 100vh;
    display: flex; align-items: center;
    padding: 8rem 4rem 4rem;
    position: relative; overflow: hidden;
}
.hero-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 4rem; align-items: center; max-width: 1200px; margin: 0 auto; width: 100%;
}
.hero-left { position: relative; }
.hero-eyebrow {
    font-family: var(--mono); font-size: 0.7rem; color: var(--accent);
    letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 1.5rem;
    display: flex; align-items: center; gap: 0.75rem;
}
.hero-eyebrow::before {
    content: ''; display: block; width: 2rem; height: 1px; background: var(--accent);
}
h1 {
    font-family: var(--serif); font-size: clamp(3rem, 6vw, 5.5rem);
    font-weight: 300; line-height: 1.05; letter-spacing: -0.01em;
    margin-bottom: 1.5rem;
}
h1 em { font-style: italic; color: var(--accent); }
.hero-desc {
    font-size: 1rem; color: var(--muted); max-width: 38ch;
    line-height: 1.8; margin-bottom: 2.5rem;
}
.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
    font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.15em;
    text-transform: uppercase; text-decoration: none; padding: 0.85rem 1.75rem;
    border-radius: 2px; transition: all 0.25s; display: inline-block;
}
.btn-primary {
    background: var(--accent); color: var(--bg); font-weight: 500;
}
.btn-primary:hover { background: #6af5d0; transform: translateY(-1px); }
.btn-outline {
    border: 1px solid var(--border); color: var(--text);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.hero-right { display: flex; flex-direction: column; gap: 1rem; }
.stat-card {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 4px; padding: 1.5rem 2rem;
    display: flex; align-items: center; gap: 1.5rem;
    transition: border-color 0.2s;
}
.stat-card:hover { border-color: rgba(74,240,196,0.3); }
.stat-num {
    font-family: var(--serif); font-size: 2.5rem; font-weight: 300;
    color: var(--accent); line-height: 1; min-width: 3rem;
}
.stat-label { font-size: 0.85rem; color: var(--muted); line-height: 1.4; }
.stat-label strong { display: block; color: var(--text); font-weight: 400; margin-bottom: 0.2rem; }

/* Decorative grid bg */
#hero::after {
    content: '';
    position: absolute; inset: 0; z-index: -1; pointer-events: none;
    background-image:
    linear-gradient(rgba(74,240,196,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,240,196,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 80% at 80% 50%, black 0%, transparent 70%);
}

/* ── DIVIDER ── */
.section-divider {
    width: 100%; height: 1px; background: var(--border);
    max-width: 1200px; margin: 0 auto;
}

/* ── SHARED SECTION WRAPPER ── */
.section-inner {
    max-width: 1200px; margin: 0 auto;
    padding: 6rem 4rem;
}
.section-header { margin-bottom: 4rem; }
.section-tag {
    font-family: var(--mono); font-size: 0.65rem; color: var(--accent);
    letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 1rem;
    display: flex; align-items: center; gap: 0.5rem;
}
.section-tag::before { content: '//'; color: var(--muted); }
h2 {
    font-family: var(--serif); font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 300; line-height: 1.1;
}
h2 em { font-style: italic; color: var(--accent); }

/* ── ABOUT ── */
#about .section-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }
.about-left {}
.about-photo-wrap {
    width: 100%; aspect-ratio: 4/5; background: var(--bg3);
    border: 1px solid var(--border); border-radius: 4px;
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
}
.about-photo-wrap::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(74,240,196,0.05) 0%, transparent 60%);
}
.photo-placeholder {
    display: flex; flex-direction: column; align-items: center; gap: 1rem;
    color: var(--muted);
}
.photo-placeholder svg { opacity: 0.3; }
.photo-placeholder span { font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.1em; }
.about-right .section-header { margin-bottom: 2rem; }
.about-text { color: var(--muted); line-height: 1.9; margin-bottom: 1.5rem; }
.about-text strong { color: var(--text); font-weight: 400; }
.about-meta { margin-top: 2rem; }
.meta-item {
    display: flex; gap: 1rem; padding: 0.85rem 0;
    border-bottom: 1px solid var(--border); align-items: baseline;
}
.meta-key { font-family: var(--mono); font-size: 0.65rem; color: var(--accent); letter-spacing: 0.1em; min-width: 8rem; }
.meta-val { font-size: 0.9rem; color: var(--text); }

/* ── RESEARCH ── */
#research { background: var(--bg2); }
.research-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.research-card {
    background: var(--bg); border: 1px solid var(--border); border-radius: 4px;
    padding: 2.5rem; position: relative; overflow: hidden;
    transition: border-color 0.3s, transform 0.3s;
}
.research-card:hover { border-color: rgba(74,240,196,0.4); transform: translateY(-3px); }
.research-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent);
}
.research-status {
    font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.15em;
    text-transform: uppercase; padding: 0.3rem 0.7rem; border-radius: 2px;
    display: inline-block; margin-bottom: 1.5rem;
}
.status-prep { background: rgba(74,240,196,0.1); color: var(--accent); border: 1px solid rgba(74,240,196,0.2); }
.status-progress { background: rgba(240,168,74,0.1); color: var(--accent2); border: 1px solid rgba(240,168,74,0.2); }
.research-card h3 {
    font-family: var(--serif); font-size: 1.4rem; font-weight: 400;
    line-height: 1.3; margin-bottom: 1rem; color: var(--text);
}
.research-card p { font-size: 0.875rem; color: var(--muted); line-height: 1.8; margin-bottom: 1.5rem; }
.research-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag {
    font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.1em;
    color: var(--muted); border: 1px solid var(--border);
    padding: 0.25rem 0.6rem; border-radius: 2px;
}

/* ── PROJECTS ── */
.projects-list { display: flex; flex-direction: column; gap: 1.5rem; }
.project-card {
    background: var(--bg2); border: 1px solid var(--border); border-radius: 4px;
    padding: 2.5rem; display: grid; grid-template-columns: 1fr auto;
    gap: 2rem; align-items: start; transition: border-color 0.25s;
}
.project-card:hover { border-color: rgba(74,240,196,0.3); }
.project-card h3 {
    font-family: var(--serif); font-size: 1.5rem; font-weight: 400;
    margin-bottom: 0.75rem;
}
.project-card p { font-size: 0.875rem; color: var(--muted); line-height: 1.8; margin-bottom: 1.25rem; }
.impact-badge {
    background: rgba(74,240,196,0.08); border: 1px solid rgba(74,240,196,0.2);
    border-radius: 3px; padding: 0.6rem 1rem;
    font-family: var(--mono); font-size: 0.65rem; color: var(--accent);
    letter-spacing: 0.08em; line-height: 1.6; white-space: nowrap;
}
.impact-badge strong { display: block; font-size: 1.1rem; margin-bottom: 0.1rem; }

/* ── SKILLS ── */
#skills { background: var(--bg2); }
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.skill-group { background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 2rem; }
.skill-group-title {
    font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.15em;
    text-transform: uppercase; color: var(--accent); margin-bottom: 1.5rem;
    padding-bottom: 1rem; border-bottom: 1px solid var(--border);
}
.skill-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.skill-pill {
    font-size: 0.8rem; color: var(--text); background: var(--bg3);
    border: 1px solid var(--border); padding: 0.35rem 0.75rem; border-radius: 2px;
    transition: border-color 0.2s, color 0.2s;
}
.skill-pill:hover { border-color: var(--accent); color: var(--accent); }
.skill-pill.surface { opacity: 0.5; font-style: italic; }

/* ── GOALS ── */
#goals {
    background: var(--bg);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.goals-inner {
    max-width: 1200px; margin: 0 auto; padding: 6rem 4rem;
    display: grid; grid-template-columns: 1fr 2fr; gap: 5rem; align-items: start;
}
.goals-quote {
    font-family: var(--serif); font-size: 2rem; font-weight: 300;
    font-style: italic; color: var(--accent); line-height: 1.4;
    position: sticky; top: 8rem;
}
.goals-content p { color: var(--muted); line-height: 1.9; margin-bottom: 1.25rem; font-size: 0.95rem; }
.goals-content p strong { color: var(--text); font-weight: 400; }
.interest-chips { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem; }
.chip {
    font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.1em;
    border: 1px solid rgba(74,240,196,0.3); color: var(--accent);
    padding: 0.4rem 0.9rem; border-radius: 50px;
}

/* ── CONTACT ── */
#contact { background: var(--bg2); }
.contact-inner {
    max-width: 1200px; margin: 0 auto; padding: 6rem 4rem;
    display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start;
}
.contact-left h2 { margin-bottom: 1.5rem; }
.contact-left p { color: var(--muted); line-height: 1.8; margin-bottom: 2rem; font-size: 0.9rem; }
.contact-links { display: flex; flex-direction: column; gap: 1rem; }
.contact-link {
    display: flex; align-items: center; gap: 1rem; text-decoration: none;
    color: var(--text); padding: 1.25rem 1.5rem;
    background: var(--bg); border: 1px solid var(--border); border-radius: 4px;
    transition: all 0.25s;
}
.contact-link:hover { border-color: var(--accent); color: var(--accent); }
.contact-link-icon {
    width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center;
    background: var(--bg3); border-radius: 3px; flex-shrink: 0;
}
.contact-link-info { flex: 1; }
.contact-link-label { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.12em; color: var(--muted); text-transform: uppercase; }
.contact-link-val { font-size: 0.875rem; margin-top: 0.15rem; }
.contact-right {
    background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 2.5rem;
}
.contact-right h3 {
    font-family: var(--serif); font-size: 1.5rem; font-weight: 400; margin-bottom: 0.5rem;
}
.contact-right p { font-size: 0.85rem; color: var(--muted); margin-bottom: 2rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label {
    display: block; font-family: var(--mono); font-size: 0.62rem;
    letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.5rem;
}
.form-group input, .form-group textarea {
    width: 100%; background: var(--bg2); border: 1px solid var(--border); border-radius: 3px;
    color: var(--text); font-family: var(--sans); font-size: 0.875rem; font-weight: 300;
    padding: 0.8rem 1rem; outline: none; transition: border-color 0.2s;
    resize: vertical;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--accent); }
.form-group textarea { min-height: 110px; }
.btn-send {
    width: 100%; background: var(--accent); color: var(--bg); font-family: var(--mono);
    font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase; font-weight: 500;
    padding: 0.9rem; border: none; border-radius: 3px; cursor: pointer; transition: background 0.2s;
}
.btn-send:hover { background: #6af5d0; }

/* ── FOOTER ── */
footer {
    border-top: 1px solid var(--border); padding: 2rem 4rem;
    display: flex; align-items: center; justify-content: space-between;
    position: relative; z-index: 1;
}
.footer-left { font-family: var(--mono); font-size: 0.65rem; color: var(--muted); letter-spacing: 0.08em; }
.footer-left span { color: var(--accent); }
.footer-right { font-family: var(--mono); font-size: 0.65rem; color: var(--muted); }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}
.fade-up { opacity: 0; animation: fadeUp 0.7s ease forwards; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.25s; }
.delay-3 { animation-delay: 0.4s; }
.delay-4 { animation-delay: 0.55s; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links { gap: 1.5rem; }
    .hero-grid, #about .section-inner, .research-grid,
    .skills-grid, .goals-inner, .contact-inner { grid-template-columns: 1fr; }
    .section-inner, .goals-inner, .contact-inner { padding: 4rem 1.5rem; }
    #hero { padding: 7rem 1.5rem 3rem; }
    footer { flex-direction: column; gap: 0.5rem; text-align: center; padding: 1.5rem; }
    .goals-quote { position: static; }
    .skills-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
    .nav-links { display: none; }
    .skills-grid { grid-template-columns: 1fr; }
    .project-card { grid-template-columns: 1fr; }
}