/* ─── TOKENS ───────────────────────────────────────────────── */
  :root {
    --surface:                  #0e0e0e;
    --surface-low:              #141414;
    --surface-container:        #1a1a1a;
    --surface-container-low:    #161616;
    --surface-container-high:   #222222;
    --surface-container-highest:#2a2a2a;
    --on-surface:               #ffffff;
    --on-surface-variant:       #adaaaa;
    --primary:                  #99f7ff;
    --primary-container:        #00f1fe;
    --secondary:                #d575ff;
    --secondary-container:      rgba(213,117,255,0.15);
    --on-secondary-container:   #d575ff;
    --outline-variant:          rgba(255,255,255,0.12);
    --error:                    #ff6b6b;

    --font-display: 'Space Grotesk', sans-serif;
    --font-body:    'Inter', sans-serif;
    --font-mono:    'JetBrains Mono', monospace;
  }

  /* ─── RESET ─────────────────────────────────────────────────── */
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    background: var(--surface);
    color: var(--on-surface);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
    cursor: none;
  }
  a { color: inherit; text-decoration: none; }
  ul { list-style: none; }

  /* ─── CUSTOM CURSOR ─────────────────────────────────────────── */
  .cursor-dot {
    position: fixed; top: 0; left: 0;
    width: 8px; height: 8px;
    background: var(--primary-container);
    border-radius: 50%;
    pointer-events: none; z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.2s, height 0.2s, background 0.2s;
  }
  .cursor-ring {
    position: fixed; top: 0; left: 0;
    width: 32px; height: 32px;
    border: 1px solid rgba(0,241,254,0.4);
    border-radius: 50%;
    pointer-events: none; z-index: 9998;
    transform: translate(-50%, -50%);
    transition: transform 0.08s linear, width 0.2s, height 0.2s;
  }
  body.cursor-hover .cursor-dot { width: 14px; height: 14px; background: var(--secondary); }
  body.cursor-hover .cursor-ring { width: 48px; height: 48px; border-color: var(--secondary); }

  /* ─── LOGIC BAR (scroll progress) ──────────────────────────── */
  .logic-bar {
    position: fixed; top: 0; left: 0;
    width: 3px; height: 0%;
    background: linear-gradient(to bottom, var(--primary), var(--primary-container));
    z-index: 1000;
    box-shadow: 0 0 12px var(--primary-container);
    transition: height 0.05s linear;
  }

  /* ─── GRID BACKGROUND ───────────────────────────────────────── */
  body::before {
    content: '';
    position: fixed; inset: 0;
    background-image:
      linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none; z-index: 0;
  }

  /* ─── NAV ────────────────────────────────────────────────────── */
  nav {
    position: fixed; top: 0; right: 0; left: 0;
    z-index: 500;
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.25rem 3rem;
    background: rgba(14,14,14,0.7);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--outline-variant);
  }
  .nav-logo {
    font-family: var(--font-display);
    font-size: 1.1rem; font-weight: 600;
    color: var(--primary-container);
    letter-spacing: -0.02em;
  }
  .nav-logo span { color: var(--on-surface-variant); font-weight: 300; }
  .nav-links { display: flex; gap: 2.5rem; }
  .nav-links a {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--on-surface-variant);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color 0.2s;
    position: relative;
  }
  .nav-links a::after {
    content: '';
    position: absolute; left: 0; bottom: -4px;
    width: 0; height: 2px;
    background: var(--primary-container);
    transition: width 0.3s ease;
  }
  .nav-links a:hover { color: var(--primary-container); }
  .nav-links a:hover::after { width: 100%; }
  .nav-cta {
    font-family: var(--font-mono);
    font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase;
    padding: 0.5rem 1.25rem;
    background: var(--primary-container);
    color: var(--surface);
    border-radius: 4px;
    font-weight: 500;
    transition: box-shadow 0.3s;
  }
  .nav-cta:hover { box-shadow: 0 0 20px rgba(0,241,254,0.3); }

  /* ─── HERO ───────────────────────────────────────────────────── */
  #hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: 8rem 3rem 4rem;
    position: relative; z-index: 1;
    gap: 4rem;
  }
  .hero-left { position: relative; }
  .hero-tag {
    font-family: var(--font-mono);
    font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase;
    color: var(--primary-container);
    margin-bottom: 1.5rem;
    display: flex; align-items: center; gap: 0.75rem;
  }
  .hero-tag::before {
    content: ''; display: block;
    width: 32px; height: 1px; background: var(--primary-container);
  }
  .hero-name {
    font-family: var(--font-display);
    font-size: clamp(3.5rem, 7vw, 6.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.0;
    color: var(--on-surface);
    margin-bottom: 0.5rem;
  }
  .hero-name .accent { color: var(--primary-container); }
  .hero-role {
    font-family: var(--font-display);
    font-size: clamp(1.1rem, 2.5vw, 1.6rem);
    font-weight: 300;
    color: var(--on-surface-variant);
    letter-spacing: -0.01em;
    margin-bottom: 2rem;
  }
  .hero-desc {
    font-size: 1rem; color: var(--on-surface-variant);
    max-width: 420px; line-height: 1.75;
    margin-bottom: 3rem;
  }
  .hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
  .btn-primary {
    font-family: var(--font-mono);
    font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase;
    padding: 0.85rem 2rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-container));
    color: var(--surface);
    border-radius: 4px;
    font-weight: 500;
    transition: box-shadow 0.3s, transform 0.2s;
  }
  .btn-primary:hover {
    box-shadow: 0 0 28px rgba(0,241,254,0.35);
    transform: translateY(-1px);
  }
  .btn-ghost {
    font-family: var(--font-mono);
    font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase;
    padding: 0.85rem 2rem;
    border: 1px solid rgba(255,255,255,0.12);
    color: var(--secondary);
    border-radius: 4px;
    transition: border-color 0.3s, box-shadow 0.3s;
  }
  .btn-ghost:hover {
    border-color: var(--secondary);
    box-shadow: 0 0 20px rgba(213,117,255,0.2);
  }

  /* hero right — stats terminal */
  .hero-right {
    display: flex; flex-direction: column; gap: 1rem;
    padding-left: 2rem;
  }
  .terminal {
    background: var(--surface-container-low);
    border-radius: 10px;
    overflow: hidden;
  }
  .terminal-bar {
    background: var(--surface-container-high);
    padding: 0.65rem 1rem;
    display: flex; align-items: center; gap: 0.5rem;
  }
  .t-dot { width: 10px; height: 10px; border-radius: 50%; }
  .t-dot.red { background: #ff5f56; }
  .t-dot.yellow { background: #ffbd2e; }
  .t-dot.green { background: #27c93f; }
  .terminal-title {
    margin-left: 0.5rem;
    font-family: var(--font-mono); font-size: 0.7rem;
    color: var(--on-surface-variant);
  }
  .terminal-body { padding: 1.25rem 1.5rem; }
  .t-line {
    font-family: var(--font-mono); font-size: 0.8rem;
    color: var(--on-surface-variant);
    margin-bottom: 0.4rem;
    opacity: 0;
    animation: fadeInLine 0.4s forwards;
  }
  .t-line .t-prompt { color: var(--primary-container); }
  .t-line .t-cmd { color: var(--on-surface); }
  .t-line .t-val { color: var(--secondary); }
  .t-line .t-comment { color: #555; }
  .t-line:nth-child(1)  { animation-delay: 0.3s; }
  .t-line:nth-child(2)  { animation-delay: 0.6s; }
  .t-line:nth-child(3)  { animation-delay: 0.9s; }
  .t-line:nth-child(4)  { animation-delay: 1.2s; }
  .t-line:nth-child(5)  { animation-delay: 1.5s; }
  .t-line:nth-child(6)  { animation-delay: 1.8s; }
  .t-line:nth-child(7)  { animation-delay: 2.1s; }
  .t-line:nth-child(8)  { animation-delay: 2.4s; }
  .t-line:nth-child(9)  { animation-delay: 2.7s; }
  .t-line:nth-child(10) { animation-delay: 3.0s; }
  .t-cursor {
    display: inline-block; width: 8px; height: 1em;
    background: var(--primary-container); vertical-align: text-bottom;
    animation: blink 1s step-end infinite;
  }
  @keyframes fadeInLine { to { opacity: 1; } }
  @keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

  .stat-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
  .stat-card {
    background: var(--surface-container-low);
    border-radius: 8px;
    padding: 1.25rem;
    position: relative; overflow: hidden;
  }
  .stat-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--primary), transparent);
  }
  .stat-num {
    font-family: var(--font-display);
    font-size: 2rem; font-weight: 700;
    color: var(--primary-container);
    letter-spacing: -0.03em;
  }
  .stat-label {
    font-family: var(--font-mono);
    font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--on-surface-variant);
    margin-top: 0.25rem;
  }

  /* ─── SECTION SHARED ─────────────────────────────────────────── */
  section { position: relative; z-index: 1; }
  .section-inner { max-width: 1200px; margin: 0 auto; padding: 6rem 3rem; }
  .section-label {
    font-family: var(--font-mono);
    font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase;
    color: var(--primary-container);
    margin-bottom: 0.75rem;
    display: flex; align-items: center; gap: 0.75rem;
  }
  .section-label::before {
    content: ''; display: block;
    width: 24px; height: 1px; background: var(--primary-container);
  }
  .section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700; letter-spacing: -0.025em;
    line-height: 1.1; margin-bottom: 3.5rem;
    color: var(--on-surface);
  }
  .section-title em { color: var(--primary-container); font-style: normal; }

  /* ─── ABOUT ──────────────────────────────────────────────────── */
  #about .section-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem; align-items: start;
  }
  .about-text p {
    color: var(--on-surface-variant);
    line-height: 1.8; margin-bottom: 1.25rem;
  }
  .about-text p strong { color: var(--on-surface); }
  .edu-card {
    background: var(--surface-container-low);
    border-radius: 10px; padding: 1.5rem;
    margin-top: 1.5rem; position: relative;
  }
  .edu-card::before {
    content: ''; position: absolute;
    left: 0; top: 0; bottom: 0; width: 3px;
    background: linear-gradient(to bottom, var(--primary-container), var(--secondary));
    border-radius: 3px 0 0 3px;
  }
  .edu-year {
    font-family: var(--font-mono); font-size: 0.7rem;
    color: var(--primary-container); letter-spacing: 0.1em;
    margin-bottom: 0.4rem;
  }
  .edu-school {
    font-family: var(--font-display); font-size: 1.05rem; font-weight: 600;
    margin-bottom: 0.25rem;
  }
  .edu-degree {
    font-size: 0.875rem; color: var(--on-surface-variant);
  }
  .edu-badge {
    display: inline-block; margin-top: 0.75rem;
    font-family: var(--font-mono); font-size: 0.65rem;
    letter-spacing: 0.08em; text-transform: uppercase;
    padding: 0.3rem 0.8rem;
    background: var(--secondary-container);
    color: var(--secondary);
    border-radius: 999px;
  }

  /* skills grid */
  .skills-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
    margin-top: 0.5rem;
  }
  .skill-group {
    background: var(--surface-container-low);
    border-radius: 10px; padding: 1.25rem;
  }
  .skill-group-label {
    font-family: var(--font-mono); font-size: 0.65rem;
    letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--primary-container); margin-bottom: 0.75rem;
  }
  .skill-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
  .chip {
    font-family: var(--font-mono); font-size: 0.7rem;
    padding: 0.3rem 0.75rem;
    background: var(--surface-container-high);
    color: var(--on-surface-variant);
    border-radius: 999px;
    transition: background 0.2s, color 0.2s;
  }
  .chip:hover { background: var(--secondary-container); color: var(--secondary); }

  /* ─── EXPERIENCE ─────────────────────────────────────────────── */
  #experience { background: var(--surface-low); }
  .exp-card {
    background: var(--surface-container-low);
    border-radius: 12px; padding: 2rem 2.5rem;
    position: relative; overflow: hidden;
    transition: transform 0.3s;
  }
  .exp-card:hover { transform: translateY(-3px); }
  .exp-card::after {
    content: ''; position: absolute;
    top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--primary-container), var(--secondary));
  }
  .exp-header {
    display: flex; justify-content: space-between; align-items: flex-start;
    margin-bottom: 1rem; flex-wrap: wrap; gap: 0.5rem;
  }
  .exp-company {
    font-family: var(--font-display); font-size: 1.3rem; font-weight: 600;
  }
  .exp-date {
    font-family: var(--font-mono); font-size: 0.7rem;
    letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--primary-container);
    background: rgba(0,241,254,0.08);
    padding: 0.3rem 0.8rem; border-radius: 999px;
  }
  .exp-role {
    font-size: 0.9rem; color: var(--secondary); margin-bottom: 1.25rem;
    font-family: var(--font-mono);
  }
  .exp-bullets { display: flex; flex-direction: column; gap: 0.6rem; }
  .exp-bullet {
    display: flex; gap: 0.75rem; align-items: flex-start;
    font-size: 0.9rem; color: var(--on-surface-variant); line-height: 1.6;
  }
  .exp-bullet::before {
    content: '▸'; color: var(--primary-container);
    flex-shrink: 0; margin-top: 0.1rem;
  }
  .exp-stack {
    display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.25rem;
  }

  /* ─── PROJECTS ───────────────────────────────────────────────── */
  .projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
  }
  .proj-card {
    background: var(--surface-container-low);
    border-radius: 12px;
    padding: 2rem;
    position: relative; overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex; flex-direction: column; gap: 1rem;
  }
  .proj-card:hover {
    transform: scale(1.02);
    box-shadow: 0 0 40px rgba(0,241,254,0.08);
  }
  .proj-card::before {
    content: ''; position: absolute;
    top: 0; left: 0; bottom: 0; width: 3px;
    background: var(--primary-container);
    transition: width 0.3s;
  }
  .proj-card:hover::before { width: 5px; }
  .proj-number {
    font-family: var(--font-mono); font-size: 0.65rem;
    color: var(--outline-variant); letter-spacing: 0.15em;
  }
  .proj-title {
    font-family: var(--font-display); font-size: 1.25rem; font-weight: 600;
    letter-spacing: -0.01em; line-height: 1.2;
  }
  .proj-desc {
    font-size: 0.875rem; color: var(--on-surface-variant); line-height: 1.7;
    flex: 1;
  }
  .proj-stack { display: flex; flex-wrap: wrap; gap: 0.4rem; }
  .proj-tag {
    font-family: var(--font-mono); font-size: 0.65rem;
    padding: 0.2rem 0.65rem;
    background: var(--secondary-container);
    color: var(--secondary);
    border-radius: 999px;
  }
  .proj-links { display: flex; gap: 0.75rem; margin-top: 0.25rem; }
  .proj-link {
    font-family: var(--font-mono); font-size: 0.7rem;
    letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--primary-container);
    display: flex; align-items: center; gap: 0.4rem;
    transition: opacity 0.2s;
  }
  .proj-link:hover { opacity: 0.7; }
  .proj-link svg { width: 12px; height: 12px; }

  /* featured project */
  .proj-card.featured {
    grid-column: span 2;
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 2rem; align-items: start;
  }
  .proj-card.featured::before { background: linear-gradient(to bottom, var(--primary-container), var(--secondary)); }
  .proj-card.featured .proj-title { font-size: 1.6rem; }
  .proj-feat-right { display: flex; flex-direction: column; gap: 1rem; }
  .proj-metric {
    background: var(--surface-container-high);
    border-radius: 8px; padding: 1rem 1.25rem;
  }
  .proj-metric-val {
    font-family: var(--font-display); font-size: 1.6rem; font-weight: 700;
    color: var(--primary-container);
  }
  .proj-metric-label {
    font-family: var(--font-mono); font-size: 0.65rem;
    color: var(--on-surface-variant); letter-spacing: 0.1em;
  }

  /* ─── ASSOCIATIONS ───────────────────────────────────────────── */
  #associations { background: var(--surface-low); }
  .assoc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
  .assoc-card {
    background: var(--surface-container-low);
    border-radius: 12px; padding: 1.75rem;
    position: relative; overflow: hidden;
    transition: transform 0.3s;
  }
  .assoc-card:hover { transform: translateY(-3px); }
  .assoc-card::after {
    content: ''; position: absolute;
    top: 0; left: 0; right: 0; height: 2px;
    background: var(--secondary);
  }
  .assoc-org {
    font-family: var(--font-display); font-size: 1.1rem; font-weight: 600;
    margin-bottom: 0.3rem;
  }
  .assoc-role {
    font-family: var(--font-mono); font-size: 0.7rem;
    color: var(--secondary); letter-spacing: 0.08em; margin-bottom: 1rem;
  }
  .assoc-desc {
    font-size: 0.875rem; color: var(--on-surface-variant); line-height: 1.7;
  }

  /* ─── CONTACT ────────────────────────────────────────────────── */

  /* ─── OPEN SOURCE ────────────────────────────────────────────── */
  #opensource { background: var(--surface); }
  .os-card {
    background: var(--surface-container-low);
    border-radius: 12px; padding: 2rem 2.5rem;
    position: relative; overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
  }
  .os-card:hover { transform: translateY(-3px); box-shadow: 0 0 40px rgba(0,241,254,0.07); }
  .os-card::before {
    content: ''; position: absolute;
    top: 0; left: 0; bottom: 0; width: 3px;
    background: linear-gradient(to bottom, var(--primary-container), var(--secondary));
  }
  .os-header { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1rem; }
  .os-project { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; }
  .os-badge { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.3rem 0.9rem; border-radius: 999px; background: rgba(0,241,254,0.1); color: var(--primary-container); }
  .os-subtitle { font-family: var(--font-mono); font-size: 0.75rem; color: var(--secondary); margin-bottom: 1rem; }
  .os-desc { font-size: 0.9rem; color: var(--on-surface-variant); line-height: 1.75; margin-bottom: 1.25rem; }
  .os-desc strong { color: var(--on-surface); }
  .os-stats { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 1.25rem; }
  .os-stat { background: var(--surface-container-high); border-radius: 8px; padding: 0.75rem 1.25rem; display: flex; flex-direction: column; gap: 0.15rem; }
  .os-stat-val { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; color: var(--primary-container); }
  .os-stat-label { font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--on-surface-variant); }

  /* ─── CERTIFICATIONS ─────────────────────────────────────────── */
  #certifications { background: var(--surface-low); }
  .cert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.25rem; }
  .cert-card {
    background: var(--surface-container-low); border-radius: 12px; padding: 1.5rem;
    position: relative; overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex; flex-direction: column; gap: 0.75rem;
  }
  .cert-card:hover { transform: translateY(-3px); box-shadow: 0 0 30px rgba(213,117,255,0.08); }
  .cert-card::after { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--secondary); }
  .cert-issuer-row { display: flex; align-items: center; justify-content: space-between; }
  .cert-issuer { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--secondary); }
  .cert-year { font-family: var(--font-mono); font-size: 0.65rem; color: var(--on-surface-variant); }
  .cert-name { font-family: var(--font-display); font-size: 1rem; font-weight: 600; line-height: 1.3; }
  .cert-desc { font-size: 0.8rem; color: var(--on-surface-variant); line-height: 1.6; }
  .cert-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: auto; }

  #contact {
    background: var(--surface-container-low);
    text-align: center;
  }
  #contact .section-inner { padding: 7rem 3rem; }
  .contact-tagline {
    font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 700; letter-spacing: -0.025em; margin-bottom: 1rem;
  }
  .contact-sub {
    color: var(--on-surface-variant);
    max-width: 480px; margin: 0 auto 3rem; line-height: 1.75;
  }
  .contact-links {
    display: flex; justify-content: center; flex-wrap: wrap; gap: 1.5rem;
    margin-bottom: 3rem;
  }
  .contact-link-card {
    background: var(--surface-container-high);
    border-radius: 10px; padding: 1.25rem 2rem;
    display: flex; align-items: center; gap: 0.75rem;
    transition: transform 0.2s, box-shadow 0.2s;
    min-width: 200px;
  }
  .contact-link-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 24px rgba(0,241,254,0.15);
  }
  .contact-link-icon { font-size: 1.5rem; }
  .contact-link-text { text-align: left; }
  .contact-link-label {
    font-family: var(--font-mono); font-size: 0.65rem;
    color: var(--on-surface-variant); letter-spacing: 0.1em; text-transform: uppercase;
  }
  .contact-link-val {
    font-family: var(--font-display); font-size: 0.9rem;
    font-weight: 500; color: var(--primary-container);
  }

  /* ─── FOOTER ─────────────────────────────────────────────────── */
  footer {
    background: var(--surface);
    border-top: 1px solid var(--outline-variant);
    text-align: center; padding: 2rem 3rem;
    font-family: var(--font-mono); font-size: 0.7rem;
    color: var(--on-surface-variant);
  }
  footer span { color: var(--primary-container); }

  /* ─── ANIMATIONS ─────────────────────────────────────────────── */
  .reveal {
    opacity: 0; transform: translateY(28px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .reveal.visible { opacity: 1; transform: none; }

  /* ─── RESPONSIVE ─────────────────────────────────────────────── */
  @media (max-width: 900px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links { display: none; }
    #hero { grid-template-columns: 1fr; padding: 7rem 1.5rem 3rem; gap: 3rem; }
    .hero-right { padding-left: 0; }
    #about .section-inner { grid-template-columns: 1fr; gap: 3rem; }
    .proj-card.featured { grid-column: span 1; grid-template-columns: 1fr; }
    .assoc-grid { grid-template-columns: 1fr; }
    .section-inner { padding: 4rem 1.5rem; }
    .stat-row { grid-template-columns: 1fr 1fr; }
  }