/* =========================================================
   nimitakhawat.com — Nimit Akhawat
   Dark / purple scientific theme
   ========================================================= */

:root {
  --bg: #07060d;
  --bg-2: #0c0a1a;
  --panel: rgba(20, 16, 38, 0.55);
  --panel-solid: #130f25;
  --border: rgba(150, 120, 255, 0.14);
  --border-strong: rgba(160, 130, 255, 0.32);
  --text: #e9e6f5;
  --text-dim: #a39fc0;
  --text-faint: #6f6a90;
  --purple: #9d6bff;
  --purple-bright: #b98bff;
  --cyan: #4be3d2;
  --pink: #ff6bc1;
  --glow: rgba(157, 107, 255, 0.5);
  --radius: 18px;
  --maxw: 1180px;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Background canvas ---------- */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  display: block;
}
.bg-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(157, 107, 255, 0.16), transparent 60%),
    radial-gradient(ellipse 60% 50% at 85% 20%, rgba(75, 227, 210, 0.07), transparent 55%),
    radial-gradient(ellipse 70% 60% at 10% 90%, rgba(255, 107, 193, 0.06), transparent 55%),
    linear-gradient(180deg, rgba(7,6,13,0.2) 0%, rgba(7,6,13,0.78) 70%, rgba(7,6,13,0.95) 100%);
}

/* ---------- Layout helpers ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 110px 26px;
  position: relative;
}
.section-head { max-width: 760px; margin-bottom: 56px; }
.section-index {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 3px;
  color: var(--purple);
  opacity: 0.8;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  font-weight: 700;
  line-height: 1.08;
  margin: 8px 0 16px;
  letter-spacing: -0.5px;
}
.section-lead { color: var(--text-dim); font-size: 1.08rem; max-width: 620px; }

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 30px;
  transition: background 0.4s, backdrop-filter 0.4s, border-color 0.4s, padding 0.4s;
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(8, 6, 16, 0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  padding: 11px 30px;
}
.brand {
  display: flex; align-items: center; gap: 9px;
  text-decoration: none; color: var(--text);
  font-family: var(--font-display); font-weight: 700; font-size: 1.25rem;
  letter-spacing: -0.5px;
}
.brand-mark {
  color: var(--purple);
  text-shadow: 0 0 14px var(--glow);
  animation: spin 14s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.brand-dot { color: var(--cyan); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  padding: 8px 13px;
  border-radius: 9px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text); background: rgba(157,107,255,0.1); }
.nav-cta {
  background: linear-gradient(120deg, var(--purple), var(--pink));
  color: #fff !important;
  box-shadow: 0 4px 18px rgba(157,107,255,0.35);
}
.nav-cta:hover { filter: brightness(1.1); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.nav-toggle span {
  width: 26px; height: 2px; background: var(--text);
  border-radius: 2px; transition: 0.3s;
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 26px 80px;
  position: relative;
}
.hero-inner { max-width: 880px; text-align: center; }
.hero-eyebrow {
  font-family: var(--font-display);
  letter-spacing: 4px;
  font-size: 0.82rem;
  color: var(--cyan);
  margin-bottom: 22px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 6vw, 4.4rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -1.5px;
  margin-bottom: 26px;
}
.grad {
  background: linear-gradient(120deg, var(--purple-bright), var(--pink));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.grad-2 {
  background: linear-gradient(120deg, var(--cyan), var(--purple-bright));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 680px;
  margin: 0 auto 30px;
}
.hero-sub strong { color: var(--text); }
.hero-sub em { color: var(--purple-bright); font-style: normal; font-weight: 500; }

.mission {
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  padding: 22px 26px;
  max-width: 660px;
  margin: 0 auto 34px;
  text-align: left;
  position: relative;
}
.mission-label {
  font-family: var(--font-display);
  font-size: 0.72rem; letter-spacing: 3px;
  color: var(--cyan);
  display: block; margin-bottom: 8px;
}
.mission p { color: var(--text-dim); font-size: 1.02rem; }

.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 38px; }

.hero-tags { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.hero-tags span {
  font-size: 0.8rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 6px 13px;
  border-radius: 30px;
  background: rgba(157,107,255,0.05);
}

.scroll-cue {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  width: 26px; height: 42px; border: 2px solid var(--border-strong);
  border-radius: 14px; display: flex; justify-content: center; padding-top: 7px;
}
.scroll-cue span {
  width: 4px; height: 8px; background: var(--purple-bright); border-radius: 3px;
  animation: scrolldot 1.6s ease-in-out infinite;
}
@keyframes scrolldot { 0%,100% { opacity:0; transform: translateY(0); } 50% { opacity:1; transform: translateY(9px); } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  padding: 13px 26px;
  border-radius: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, filter 0.2s;
}
.btn-primary {
  background: linear-gradient(120deg, var(--purple), var(--pink));
  color: #fff;
  box-shadow: 0 8px 26px rgba(157,107,255,0.32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(157,107,255,0.45); }
.btn-ghost {
  background: rgba(157,107,255,0.06);
  border: 1px solid var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover { background: rgba(157,107,255,0.14); transform: translateY(-2px); }
.btn-small { padding: 9px 17px; font-size: 0.86rem; border-radius: 10px; }
.btn-full { width: 100%; text-align: center; }

/* ---------- Research / Projects ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.project-card {
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 100% 0%, rgba(157,107,255,0.1), transparent 50%);
  opacity: 0; transition: opacity 0.3s;
}
.project-card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: 0 20px 50px rgba(0,0,0,0.4); }
.project-card:hover::before { opacity: 1; }
.project-card.feature { grid-column: 1 / -1; }
.project-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; flex-wrap: wrap; gap: 8px; }
.status { font-family: var(--font-display); font-size: 0.78rem; font-weight: 600; padding: 4px 11px; border-radius: 30px; }
.status-progress { color: #ffd166; background: rgba(255,209,102,0.1); border: 1px solid rgba(255,209,102,0.3); }
.status-published { color: var(--cyan); background: rgba(75,227,210,0.1); border: 1px solid rgba(75,227,210,0.3); }
.status-theme { color: var(--purple-bright); background: rgba(157,107,255,0.1); border: 1px solid var(--border-strong); }
.project-field { font-size: 0.8rem; color: var(--text-faint); letter-spacing: 1px; text-transform: uppercase; }
.project-card h3 { font-family: var(--font-display); font-size: 1.5rem; margin-bottom: 12px; letter-spacing: -0.4px; }
.project-desc { color: var(--text-dim); margin-bottom: 16px; font-size: 0.99rem; }
.project-desc strong { color: var(--text); }
.project-desc em { color: var(--purple-bright); font-style: normal; }

.pipeline {
  border-left: 2px solid var(--border-strong);
  background: rgba(157,107,255,0.04);
  border-radius: 0 12px 12px 0;
  padding: 16px 20px;
  margin: 0 0 18px;
}
.pipeline-title { font-family: var(--font-display); font-size: 0.8rem; letter-spacing: 2px; color: var(--cyan); text-transform: uppercase; display: block; margin-bottom: 10px; }
.pipeline ol { margin-left: 18px; color: var(--text-dim); }
.pipeline li { margin-bottom: 6px; }
.pipeline strong { color: var(--purple-bright); }

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.chip { font-size: 0.78rem; color: var(--text-dim); background: rgba(150,120,255,0.08); border: 1px solid var(--border); padding: 5px 11px; border-radius: 8px; }
.card-link { display: inline-block; margin-top: 16px; color: var(--purple-bright); text-decoration: none; font-weight: 600; font-family: var(--font-display); font-size: 0.92rem; }
.card-link:hover { color: var(--pink); }

/* ---------- Articles ---------- */
.article-list { display: flex; flex-direction: column; gap: 18px; }
.article-item {
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 28px 30px;
  transition: border-color 0.3s, transform 0.3s;
}
.article-item:hover { border-color: var(--border-strong); transform: translateX(4px); }
.article-meta { display: flex; gap: 14px; align-items: center; margin-bottom: 10px; flex-wrap: wrap; }
.article-type { font-family: var(--font-display); font-size: 0.78rem; font-weight: 600; color: var(--pink); letter-spacing: 1px; text-transform: uppercase; }
.article-venue { font-size: 0.85rem; color: var(--text-faint); }
.article-item h3 { font-family: var(--font-display); font-size: 1.3rem; margin-bottom: 12px; line-height: 1.25; }
.article-summary { color: var(--text-dim); margin-bottom: 18px; }
.article-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.article-item.placeholder { opacity: 0.72; border-style: dashed; }

/* ---------- Goal ---------- */
.goal-section { }
.goal-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 30px; align-items: start; }
.goal-narrative h3 { font-family: var(--font-display); font-size: 1.8rem; margin-bottom: 18px; letter-spacing: -0.5px; line-height: 1.15; }
.goal-narrative p { color: var(--text-dim); margin-bottom: 18px; font-size: 1.04rem; }
.goal-narrative strong { color: var(--text); }
.goal-cards { display: flex; flex-direction: column; gap: 16px; }
.goal-card {
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(10px);
  border-radius: 14px;
  padding: 22px;
  transition: border-color 0.3s, transform 0.3s;
}
.goal-card:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.goal-icon { font-size: 1.6rem; display: block; margin-bottom: 8px; }
.goal-card h4 { font-family: var(--font-display); font-size: 1.15rem; margin-bottom: 8px; color: var(--purple-bright); }
.goal-card p { color: var(--text-dim); font-size: 0.95rem; }
.goal-card em { color: var(--cyan); font-style: normal; }

/* ---------- Blog ---------- */
.blog-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.blog-card {
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.3s, border-color 0.3s;
  position: relative;
}
.blog-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.blog-tag { font-family: var(--font-display); font-size: 0.72rem; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 4px 10px; border-radius: 20px; display: inline-block; margin-bottom: 14px; }
.tag-neuro { color: var(--pink); background: rgba(255,107,193,0.1); }
.tag-ml { color: var(--cyan); background: rgba(75,227,210,0.1); }
.tag-chem { color: var(--purple-bright); background: rgba(157,107,255,0.1); }
.tag-career { color: #ffd166; background: rgba(255,209,102,0.1); }
.blog-card h3 { font-family: var(--font-display); font-size: 1.22rem; margin-bottom: 10px; line-height: 1.25; }
.blog-card p { color: var(--text-dim); font-size: 0.95rem; margin-bottom: 16px; }
.blog-card em { color: var(--purple-bright); font-style: normal; }
.blog-soon { font-size: 0.78rem; color: var(--text-faint); border: 1px dashed var(--border-strong); padding: 4px 10px; border-radius: 20px; }

/* ---------- YouTube ---------- */
.yt-wrap { display: grid; grid-template-columns: 1.1fr 1fr; gap: 30px; align-items: center; }
.yt-thumb {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background:
    radial-gradient(circle at 30% 30%, rgba(157,107,255,0.3), transparent 60%),
    radial-gradient(circle at 70% 70%, rgba(255,107,193,0.2), transparent 60%),
    linear-gradient(135deg, #1a1230, #0d0a1c);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  transition: transform 0.3s;
}
.yt-thumb:hover { transform: scale(1.01); }
.yt-play {
  width: 76px; height: 76px; border-radius: 50%;
  background: linear-gradient(120deg, var(--purple), var(--pink));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.7rem; padding-left: 5px;
  box-shadow: 0 0 0 12px rgba(157,107,255,0.12), 0 0 40px var(--glow);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 12px rgba(157,107,255,0.12), 0 0 40px var(--glow); } 50% { box-shadow: 0 0 0 18px rgba(157,107,255,0.05), 0 0 60px var(--glow); } }
.yt-label { position: absolute; bottom: 14px; right: 16px; font-family: var(--font-display); color: var(--text); font-size: 0.9rem; opacity: 0.85; }
.yt-info h3 { font-family: var(--font-display); font-size: 1.7rem; margin-bottom: 14px; }
.yt-info p { color: var(--text-dim); margin-bottom: 22px; }
.yt-actions { display: flex; gap: 13px; flex-wrap: wrap; }

/* ---------- Gallery ---------- */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.gallery-item { aspect-ratio: 4 / 3; border-radius: 14px; overflow: hidden; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; }
.placeholder-tile {
  border: 1px dashed var(--border-strong);
  background:
    repeating-linear-gradient(45deg, rgba(157,107,255,0.04) 0 12px, transparent 12px 24px),
    var(--panel);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); font-family: var(--font-display); font-size: 0.95rem; letter-spacing: 1px;
  transition: border-color 0.3s, color 0.3s;
}
.placeholder-tile:hover { border-color: var(--purple); color: var(--purple-bright); }
.gallery-note { margin-top: 18px; color: var(--text-faint); font-size: 0.85rem; }
code { background: rgba(157,107,255,0.12); color: var(--purple-bright); padding: 2px 7px; border-radius: 6px; font-size: 0.85em; }

/* ---------- Resume ---------- */
.resume-wrap { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 24px; align-items: stretch; }
.resume-summary, .resume-download {
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 30px;
}
.resume-summary h3 { font-family: var(--font-display); font-size: 1.4rem; margin-bottom: 18px; }
.resume-list { list-style: none; }
.resume-list li { padding: 11px 0 11px 26px; border-bottom: 1px solid var(--border); color: var(--text-dim); position: relative; }
.resume-list li::before { content: "▸"; position: absolute; left: 0; color: var(--purple); }
.resume-list li:last-child { border-bottom: none; }
.resume-list strong { color: var(--text); }
.resume-download { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 14px; }
.resume-icon { font-size: 3rem; }
.resume-download p { color: var(--text-dim); }
.resume-hint, .form-note, .contact-blurb.small { font-size: 0.78rem; color: var(--text-faint); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 26px; }
.contact-form, .contact-side {
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 30px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: block; margin-bottom: 16px; }
.contact-form label span { display: block; font-size: 0.85rem; color: var(--text-dim); margin-bottom: 7px; font-weight: 500; }
.contact-form input, .contact-form textarea {
  width: 100%;
  background: rgba(8,6,16,0.6);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: vertical;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--purple); box-shadow: 0 0 0 3px rgba(157,107,255,0.15); }
.form-note { margin-top: 12px; }
.form-note a { color: var(--purple-bright); }
.form-status { margin-top: 14px; font-size: 0.92rem; font-weight: 500; border-radius: 10px; padding: 0; transition: padding 0.2s; }
.form-status:not(:empty) { padding: 11px 14px; border: 1px solid var(--border); }
.form-status.pending { color: var(--text-dim); }
.form-status.success { color: var(--cyan); background: rgba(75,227,210,0.08); border-color: rgba(75,227,210,0.3); }
.form-status.error { color: #ff8a9d; background: rgba(255,107,138,0.08); border-color: rgba(255,107,138,0.3); }
.contact-side h3 { font-family: var(--font-display); font-size: 1.4rem; margin-bottom: 18px; }
.contact-side h4 { font-family: var(--font-display); font-size: 1rem; margin: 24px 0 12px; color: var(--text-dim); }
.contact-link { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-size: 1.1rem; font-weight: 600; font-family: var(--font-display); }
.contact-link:hover { color: var(--purple-bright); }
.contact-ico { color: var(--cyan); }
.contact-blurb { color: var(--text-dim); font-size: 0.92rem; margin-top: 6px; }
.social-row { display: flex; flex-wrap: wrap; gap: 10px; }
.social {
  font-size: 0.85rem; color: var(--text-dim); text-decoration: none;
  border: 1px solid var(--border); padding: 8px 14px; border-radius: 10px;
  transition: all 0.2s; font-weight: 500;
}
.social:hover { color: #fff; border-color: var(--purple); background: rgba(157,107,255,0.12); transform: translateY(-2px); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 36px 26px; background: rgba(8,6,16,0.5); backdrop-filter: blur(10px); }
.footer-inner { max-width: var(--maxw); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px; }
.footer-inner .brand-text { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; }
.footer-inner p { color: var(--text-faint); font-size: 0.88rem; }
.footer-top { color: var(--purple-bright); text-decoration: none; font-weight: 600; font-size: 0.9rem; }
.footer-top:hover { color: var(--pink); }

/* ---------- Tabs (one section visible at a time) ---------- */
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: tabIn 0.45s ease; }
.hero.tab-panel.active { display: flex; }
@keyframes tabIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.nav-links a.active { color: var(--text); background: rgba(157,107,255,0.14); }
.nav-links a.nav-cta.active { color: #fff; }

/* ---------- Reveal animation ---------- */
.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) {
  .project-grid, .blog-grid, .goal-grid, .yt-wrap, .resume-wrap, .contact-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links {
    position: fixed; top: 0; right: 0; height: 100vh; width: min(78vw, 320px);
    flex-direction: column; align-items: flex-start; justify-content: center; gap: 8px;
    background: rgba(10, 8, 20, 0.97); backdrop-filter: blur(18px);
    padding: 40px; transform: translateX(100%); transition: transform 0.35s ease;
    border-left: 1px solid var(--border);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { width: 100%; font-size: 1.05rem; padding: 12px 14px; }
  .nav-toggle { display: flex; z-index: 101; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .section { padding: 80px 22px; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .brand-mark, .yt-play, .scroll-cue span { animation: none; }
  html { scroll-behavior: auto; }
}