:root {
    --bg: #0a0a0b;
    --bg2: #111114;
    --bg3: #18181c;
    --border: rgba(255,255,255,0.07);
    --text: #e8e6e0;
    --text-muted: #6b6967;
    --text-mid: #a09d99;
    --accent: #c9a96e;
    --accent2: #7fa8c9;
    --accent-glow: rgba(201,169,110,0.15);
    --card-bg: rgba(255,255,255,0.03);
    --tag-bg: rgba(201,169,110,0.1);
    --tag-border: rgba(201,169,110,0.3);
    --shadow: 0 20px 60px rgba(0,0,0,0.5);
  }
  [data-theme="light"] {
    --bg: #f5f2ec;
    --bg2: #edeae2;
    --bg3: #e4e0d5;
    --border: rgba(0,0,0,0.1);
    --text: #1a1714;
    --text-muted: #8c8680;
    --text-mid: #4a4744;
    --accent: #9a6f2e;
    --accent2: #2e6fa0;
    --accent-glow: rgba(154,111,46,0.1);
    --card-bg: rgba(255,255,255,0.6);
    --tag-bg: rgba(154,111,46,0.1);
    --tag-border: rgba(154,111,46,0.3);
    --shadow: 0 20px 60px rgba(0,0,0,0.12);
  }
  *, *::before, *::after { box-sizing: border-box; margin:0; padding:0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg);
    color: var(--text);
    transition: background 0.4s, color 0.4s;
    overflow-x: hidden;
  }
  /* NOISE OVERLAY */
  body::before {
    content:'';
    position:fixed;
    inset:0;
    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)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events:none;
    z-index:1000;
    opacity:0.4;
  }

  /* THEME TOGGLE */
  .theme-btn {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 999;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg2);
    color: var(--accent);
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    box-shadow: var(--shadow);
  }
  .theme-btn:hover { transform: scale(1.1); border-color: var(--accent); }

  /* NAV */
  nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 900;
    padding: 0 112px 0 48px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    backdrop-filter: blur(20px);
    transition: background 0.4s;
  }
  .nav-logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.1rem;
    color: var(--accent);
    letter-spacing: 0.05em;
  }
  .nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
  }
  .nav-links a {
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    color: var(--text-muted);
    text-decoration: none;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.2s;
  }
  .nav-links a:hover { color: var(--accent); }

  /* SECTIONS */
  section { padding: 100px 0; }
  .container { max-width: 1100px; margin: 0 auto; padding: 0 48px; }

  /* HERO */
  #hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 64px;
    position: relative;
    overflow: hidden;
  }
  .hero-grid-bg {
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(var(--border) 1px, transparent 1px),
      linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 40%, transparent 100%);
  }
  .hero-inner {
    position: relative;
    z-index: 2;
    padding-top: 24px;
  }
  .hero-eyebrow {
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .hero-eyebrow::before {
    content: '';
    display: inline-block;
    width: 40px;
    height: 1px;
    background: var(--accent);
  }
  h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(3rem, 8vw, 6.5rem);
    font-weight: 900;
    line-height: 1.0;
    margin-bottom: 24px;
  }
  h1 em {
    font-style: italic;
    color: var(--accent);
  }
  .hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-mid);
    max-width: 560px;
    line-height: 1.7;
    margin-bottom: 40px;
    font-weight: 300;
  }
  .hero-ctas {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 64px;
  }
  .btn-primary {
    padding: 14px 32px;
    background: var(--accent);
    color: #0a0a0b;
    border: none;
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    font-weight: 500;
  }
  .btn-primary:hover { opacity: 0.85; transform: translateY(-2px); }
  .btn-outline {
    padding: 14px 32px;
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
  }
  .btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

  .hero-stats {
    display: flex;
    gap: 48px;
  }
  .stat-item { }
  .stat-num {
    font-family: 'Playfair Display', serif;
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
    line-height: 1;
  }
  .stat-label {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 4px;
  }

  /* SECTION HEADERS */
  .section-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 64px;
  }
  .section-num {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: var(--accent);
    text-transform: uppercase;
  }
  .section-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.1;
  }
  .section-line {
    flex: 1;
    height: 1px;
    background: var(--border);
  }

  /* ABOUT */
  .about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    align-items: start;
  }
  .about-text {
    max-width: 780px;
  }
  .about-text p {
    color: var(--text-mid);
    line-height: 1.8;
    font-size: 1.05rem;
    margin-bottom: 20px;
    font-weight: 300;
  }
  .about-text p strong { color: var(--text); font-weight: 500; }
  .about-details { display: flex; flex-direction: column; gap: 20px; }
  .detail-row {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 20px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    transition: background 0.2s;
  }
  .detail-row:hover { background: var(--accent-glow); }
  .detail-icon { color: var(--accent); font-size: 1rem; margin-top: 2px; flex-shrink: 0; }
  .detail-key {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 3px;
  }
  .detail-val { font-size: 0.9rem; color: var(--text); font-weight: 400; }
  .detail-val a { color: var(--accent); text-decoration: none; }

  /* EXPERIENCE */
  #experience { background: var(--bg2); }
  .exp-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 40px;
    padding: 40px 0;
    border-bottom: 1px solid var(--border);
    position: relative;
  }
  .exp-item:last-child { border-bottom: none; }
  .exp-meta { }
  .exp-period {
    font-family: 'DM Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 0.08em;
    margin-bottom: 8px;
  }
  .exp-company {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 300;
  }
  .exp-company a { color: var(--accent2); text-decoration: none; }
  .exp-role {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text);
  }
  .exp-content { }
  .exp-bullets { list-style: none; margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
  .exp-bullets li {
    font-size: 0.88rem;
    color: var(--text-mid);
    line-height: 1.6;
    padding-left: 16px;
    position: relative;
    font-weight: 300;
  }
  .exp-bullets li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-size: 0.75rem;
    top: 2px;
  }

  /* PROJECTS */
  .projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
  }
  .project-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 32px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
  }
  .project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s;
  }
  .project-card:hover::before { transform: scaleX(1); }
  .project-card:hover { border-color: rgba(201,169,110,0.3); transform: translateY(-4px); box-shadow: var(--shadow); }
  .project-num {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    margin-bottom: 16px;
  }
  .project-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.3;
  }
  .project-desc {
    font-size: 0.85rem;
    color: var(--text-mid);
    line-height: 1.7;
    font-weight: 300;
    margin-bottom: 20px;
  }
  .project-tags { display: flex; flex-wrap: wrap; gap: 8px; }
  .tag {
    font-family: 'DM Mono', monospace;
    font-size: 0.62rem;
    padding: 4px 10px;
    background: var(--tag-bg);
    border: 1px solid var(--tag-border);
    color: var(--accent);
    letter-spacing: 0.05em;
  }
  .project-link {
    display: inline-flex;
    align-items: center;
    margin-top: 18px;
    font-family: 'DM Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent2);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.2s, border-color 0.2s;
  }
  .project-link:hover {
    color: var(--accent);
    border-color: var(--accent);
  }

  /* CERTIFICATIONS */
  #certifications { background: var(--bg2); }
  .certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
  }
  .cert-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 28px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    transition: all 0.3s;
  }
  .cert-card:hover { border-color: var(--accent); background: var(--accent-glow); }
  .cert-icon {
    width: 44px;
    height: 44px;
    background: var(--tag-bg);
    border: 1px solid var(--tag-border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.2rem;
  }
  .cert-issuer {
    font-family: 'DM Mono', monospace;
    font-size: 0.62rem;
    color: var(--accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 6px;
  }
  .cert-name {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text);
    line-height: 1.4;
    margin-bottom: 4px;
  }
  .cert-date {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: 'DM Mono', monospace;
  }
  .cert-link {
    display: inline-flex;
    align-items: center;
    margin-top: 12px;
    font-family: 'DM Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent2);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.2s, border-color 0.2s;
  }
  .cert-link:hover {
    color: var(--accent);
    border-color: var(--accent);
  }

  /* SKILLS */
  .skills-cols {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
  }
  .section-block {
    margin-top: 80px;
  }
  .skill-group { }
  .skill-group-title {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
  }
  .skill-list { display: flex; flex-wrap: wrap; gap: 8px; }
  .skill-pill {
    font-size: 0.8rem;
    padding: 6px 12px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text-mid);
    transition: all 0.2s;
  }
  .skill-pill:hover { border-color: var(--accent); color: var(--accent); }

  /* EDUCATION */
  .edu-list { display: flex; flex-direction: column; gap: 0; }
  .edu-item {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 40px;
    padding: 32px 0;
    border-bottom: 1px solid var(--border);
  }
  .edu-item:last-child { border-bottom: none; }
  .edu-year {
    font-family: 'DM Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.08em;
    padding-top: 4px;
  }
  .edu-degree {
    font-family: 'Playfair Display', serif;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
  }
  .edu-inst {
    font-size: 0.85rem;
    color: var(--text-mid);
    margin-bottom: 6px;
  }
  .edu-gpa {
    font-family: 'DM Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 0.05em;
  }

  /* HONORS */
  .honors-list { display: flex; flex-direction: column; gap: 16px; }
  .honor-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 20px 24px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    transition: all 0.2s;
  }
  .honor-item:hover { border-color: var(--accent); }
  .honor-icon { color: var(--accent); font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
  .honor-title { font-weight: 500; margin-bottom: 4px; }
  .honor-org { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 4px; font-family: 'DM Mono', monospace; font-size: 0.7rem; letter-spacing: 0.05em; }
  .honor-desc { font-size: 0.83rem; color: var(--text-mid); font-weight: 300; }

  /* CONTACT */
  #contact { background: var(--bg2); }
  .contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
  }
  .contact-intro {
    font-size: 1rem;
    color: var(--text-mid);
    line-height: 1.8;
    font-weight: 300;
    margin-bottom: 32px;
  }
  .contact-links { display: flex; flex-direction: column; gap: 16px; }
  .contact-link {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    text-decoration: none;
    color: var(--text);
    transition: all 0.2s;
  }
  .contact-link:hover { border-color: var(--accent); color: var(--accent); transform: translateX(4px); }
  .contact-link-icon { color: var(--accent); font-size: 1rem; flex-shrink: 0; }
  .contact-link-label { font-family: 'DM Mono', monospace; font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); display: block; margin-bottom: 2px; }
  .contact-link-val { font-size: 0.9rem; }
  .refs-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 24px;
  }
  .ref-item {
    padding: 20px 24px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    margin-bottom: 16px;
  }
  .ref-name { font-weight: 500; margin-bottom: 4px; }
  .ref-role { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 8px; }
  .ref-contact { font-family: 'DM Mono', monospace; font-size: 0.7rem; color: var(--accent); }

  /* FOOTER */
  footer {
    padding: 32px 48px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .footer-copy { font-family: 'DM Mono', monospace; font-size: 0.65rem; color: var(--text-muted); letter-spacing: 0.1em; }
  .footer-made { font-family: 'DM Mono', monospace; font-size: 0.65rem; color: var(--text-muted); letter-spacing: 0.05em; }

  /* RESUME SECTION */
  .resume-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
  }
  .resume-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
  }
  .resume-text h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 12px;
  }
  .resume-text p { color: var(--text-mid); font-size: 0.92rem; font-weight: 300; line-height: 1.7; max-width: 400px; }

  /* ANIMATIONS */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .fade-up { animation: fadeUp 0.7s ease forwards; }
  .delay-1 { animation-delay: 0.1s; opacity: 0; }
  .delay-2 { animation-delay: 0.2s; opacity: 0; }
  .delay-3 { animation-delay: 0.35s; opacity: 0; }
  .delay-4 { animation-delay: 0.5s; opacity: 0; }
  .delay-5 { animation-delay: 0.65s; opacity: 0; }

  /* PUBLICATION */
  .pub-item {
    padding: 24px 28px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent2);
    margin-top: 32px;
  }
  .pub-venue { font-family: 'DM Mono', monospace; font-size: 0.65rem; color: var(--accent2); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 8px; }
  .pub-title { font-size: 0.95rem; font-weight: 500; color: var(--text); line-height: 1.5; }
  .pub-link {
    display: inline-flex;
    align-items: center;
    margin-top: 14px;
    font-family: 'DM Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent2);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.2s, border-color 0.2s;
  }
  .pub-link:hover {
    color: var(--accent);
    border-color: var(--accent);
  }

  /* RESPONSIVE */
  @media (max-width: 768px) {
    nav { padding: 0 24px; }
    .nav-links { display: none; }
    .container { padding: 0 24px; }
    .hero-inner { padding-top: 12px; }
    .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .exp-item { grid-template-columns: 1fr; gap: 12px; }
    .edu-item { grid-template-columns: 1fr; gap: 8px; }
    .hero-stats { gap: 24px; flex-wrap: wrap; }
    footer { flex-direction: column; gap: 8px; text-align: center; padding: 24px; }
    .resume-card { flex-direction: column; padding: 32px; }
    h1 { font-size: 2.8rem; }
  }

  /* SCROLL REVEAL */
  .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
  .reveal.visible { opacity: 1; transform: translateY(0); }