/* ────────────────────────────────────────────────────────────
   NutriVision — organization-style landing page.

   Three themes, swap via [data-theme] on <body>:
     "academic" (default)  - navy blue + gold accent
     "forest"              - deep green + amber accent
     "dark"                - dark mode
   ──────────────────────────────────────────────────────────── */

:root {
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 18px;
  --shadow-card: 0 1px 2px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.04);
  --shadow-card-hover: 0 2px 6px rgba(0,0,0,.06), 0 14px 36px rgba(0,0,0,.08);
  --w-narrow: min(1100px, 92vw);
  --w-page:   min(1480px, 94vw);
  --transition: .18s ease;
}

/* ─── Academic (default) ─── */
body[data-theme="academic"] {
  --bg:        #f7f8fb;
  --bg-alt:    #ffffff;
  --bg-hero:  linear-gradient(180deg,#1e3a5f 0%,#2c4d7a 60%,#3b649b 100%);
  --fg:        #1f2933;
  --fg-muted:  #5b6573;
  --border:    #e3e6ec;
  --primary:   #1e3a5f;
  --primary-2: #2c4d7a;
  --accent:    #f5a623;       /* warm gold */
  --accent-2:  #e8941a;
  --code-bg:   #eef1f5;
  --ours-bg:   #fff7e1;
  --ours-fg:   #5b3d00;
}

/* ─── Forest ─── */
body[data-theme="forest"] {
  --bg:        #f6f9f6;
  --bg-alt:    #ffffff;
  --bg-hero:  linear-gradient(180deg,#15402b 0%,#1f5b3d 60%,#2c7a52 100%);
  --fg:        #1c2a22;
  --fg-muted:  #58675e;
  --border:    #dfe6e1;
  --primary:   #1f5b3d;
  --primary-2: #2c7a52;
  --accent:    #d99831;
  --accent-2:  #c08527;
  --code-bg:   #eaf1ec;
  --ours-bg:   #fff5dd;
  --ours-fg:   #5b3d00;
}

/* ─── Dark ─── */
body[data-theme="dark"] {
  --bg:        #0d1117;
  --bg-alt:    #161b22;
  --bg-hero:  linear-gradient(180deg,#0d1117 0%,#1b2330 60%,#283449 100%);
  --fg:        #e6edf3;
  --fg-muted:  #8b9eb0;
  --border:    #2a313c;
  --primary:   #3b649b;
  --primary-2: #5582bd;
  --accent:    #f5a623;
  --accent-2:  #e8941a;
  --code-bg:   #1f2733;
  --ours-bg:   #2a2415;
  --ours-fg:   #f5d28a;
}

/* ───────────────────────── base ───────────────────────── */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg); color: var(--fg);
  line-height: 1.55; font-size: 15.5px;
  transition: background-color var(--transition), color var(--transition);
}
h1,h2,h3,h4 { font-family:'Plus Jakarta Sans', 'Inter', sans-serif; letter-spacing:-.01em; }
h1 { font-size: 60px; line-height:1.05; margin: 12px 0 16px; font-weight:800; }
h2 { font-size: 30px; line-height:1.2;  margin: 4px 0 18px; font-weight:700; }
h3 { font-size: 18px; line-height:1.3;  margin: 0 0 8px;  font-weight:600; }
h4 { font-size: 14px; line-height:1.3;  margin: 0 0 8px;  font-weight:700;
     letter-spacing:.04em; text-transform:uppercase; color: var(--fg-muted); }
p { margin: 0 0 14px; }
a { color: var(--primary-2); text-decoration: none; }
a:hover { text-decoration: underline; }
hr { border: 0; border-top: 1px solid var(--border); margin: 24px 0; }

.container       { max-width: var(--w-page); margin: 0 auto; padding: 0 28px; }
.container.narrow{ max-width: var(--w-narrow); margin: 0 auto; padding: 0 28px; }

/* ───────────────────────── nav ───────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--w-page); margin: 0 auto; padding: 12px 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display:flex; align-items:center; gap:8px; color: var(--fg); font-size:17px; }
.brand:hover { text-decoration: none; }
.logo {
  display:inline-flex; width:26px; height:26px; border-radius:8px;
  background: var(--primary); color:#fff; align-items:center; justify-content:center;
  font-size:14px;
}
.nav-links { display:flex; align-items:center; gap:22px; font-size:14px; }
.nav-links a { color: var(--fg-muted); font-weight:500; }
.nav-links a:hover { color: var(--fg); text-decoration: none; }
.nav-links a.cta {
  background: var(--primary); color:#fff; padding:8px 14px; border-radius: 999px;
}
.nav-links a.cta:hover { background: var(--primary-2); }
.nav-links a.ds-link {
  color: var(--primary); font-weight: 600; font-size: 13px;
  padding: 4px 10px; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--primary) 30%, transparent);
}
.nav-links a.ds-link:hover {
  background: color-mix(in srgb, var(--primary) 10%, transparent);
  color: var(--primary);
}
.nav-sep {
  width: 1px; height: 20px; background: var(--border);
  margin: 0 4px;
}
.theme-btn {
  background: transparent; border: 1px solid var(--border);
  width: 36px; height: 36px; border-radius: 50%;
  color: var(--fg); cursor: pointer; font-size: 16px; line-height: 1;
  transition: transform var(--transition);
}
.theme-btn:hover { transform: rotate(60deg); }

/* ───────────────────────── hero ───────────────────────── */
.hero {
  background: var(--bg-hero); color: #fff;
  padding: 96px 0 88px; text-align: center;
}
.hero .badges { display:flex; gap:8px; justify-content:center; margin-bottom: 14px; flex-wrap:wrap; }
.badge {
  font-size:11px; font-weight:700; letter-spacing:.06em; text-transform:uppercase;
  padding: 5px 11px; border-radius: 999px;
  background: rgba(255,255,255,.12); color: rgba(255,255,255,.92);
  text-decoration: none; display: inline-flex; align-items: center;
  transition: background .2s, color .2s;
}
a.badge:hover { background: rgba(255,255,255,.22); color: #fff; }
.badge.accent { background: var(--accent); color: #1f1300; }
.badge.accent:hover { background: var(--accent); color: #000; }
.hero h1 { color: #fff; }
.hero .tag {
  font-size: 19px; max-width: 880px; margin: 0 auto 12px;
  color: rgba(255,255,255,.92); font-weight:500;
}
.hero .sub {
  font-size: 15px; max-width: 820px; margin: 0 auto 28px;
  color: rgba(255,255,255,.78);
}
.cta-row { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; margin-bottom: 56px; }
.hero-stats {
  display:flex; gap:56px; justify-content:center; flex-wrap:wrap;
  border-top: 1px solid rgba(255,255,255,.16); padding-top: 28px;
  max-width: 1100px; margin: 0 auto;
}
.hero-stats > div { display:flex; flex-direction:column; gap:4px; min-width:120px; }
.hero-stats b { font-size:28px; font-family:'Plus Jakarta Sans',sans-serif; font-weight:800; color: var(--accent); }
.hero-stats span { font-size:12px; color: rgba(255,255,255,.78); }

/* ───────────────────────── sections ───────────────────────── */
.section { padding: 80px 0; }
.section.alt { background: var(--bg-alt); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.kicker {
  display:inline-block; font-size:12px; font-weight:700; letter-spacing:.12em;
  text-transform: uppercase; color: var(--primary-2);
  padding: 4px 10px; border-radius: 999px;
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  margin-bottom: 12px;
}

/* ───────────────────────── buttons ───────────────────────── */
.btn, button {
  display: inline-block; font: inherit; font-size: 14px;
  padding: 11px 22px; border: 0; border-radius: 8px;
  cursor: pointer; font-weight: 600; transition: all var(--transition);
}
.btn.primary, button.primary, button[type="submit"] {
  background: var(--primary); color: #fff;
}
.btn.primary:hover, button.primary:hover, button[type="submit"]:hover {
  background: var(--primary-2); text-decoration: none;
}
.btn.ghost, button.ghost {
  background: transparent; color: var(--primary-2);
  border: 1px solid var(--border);
}
.btn.ghost:hover, button.ghost:hover {
  background: var(--bg-alt); text-decoration: none;
}

/* ───────────────────────── architecture image ───────────────────────── */
.arch {
  display: block; max-width: 100%; width: 100%;
  margin: 24px auto;
  background: var(--bg-alt);
  border: 1px solid var(--border); border-radius: var(--r-md);
  padding: 18px;
}

/* ───────────────────────── card grids ───────────────────────── */
.cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px; margin-top: 32px;
}
.card-mini, .callout {
  background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: 20px;
  box-shadow: var(--shadow-card); transition: transform var(--transition), box-shadow var(--transition);
}
.card-mini:hover, .callout:hover { transform: translateY(-2px); box-shadow: var(--shadow-card-hover); }
.card-mini .num {
  display: inline-flex; width: 28px; height: 28px; border-radius: 6px;
  background: var(--primary); color: #fff;
  align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px; margin-bottom: 10px;
}
.callout h4 { color: var(--fg-muted); }
.callout p { font-size: 18px; font-weight: 600; margin: 0; }
.callout b { color: var(--accent-2); font-size: 22px; font-weight: 800; }

/* ───────────────────────── results table ───────────────────────── */
.tbl-title { margin: 30px 0 10px; font-size: 17px; font-weight: 600; }
.tbl-title small { color: var(--fg-muted); font-weight: 500; font-size: 13px; margin-left: 6px; }

/* Dataset section heading used in the gallery */
.ds-section-title {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin: 28px 0 14px; font-size: 18px; font-weight: 700;
  color: var(--fg);
}
.ds-badge {
  display: inline-block; padding: 4px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  text-decoration: none;
  transition: filter .2s, transform .2s;
}
a.ds-badge:hover { filter: brightness(1.08); transform: translateY(-1px); }
.ds-badge.ds-n5k  {
  background: color-mix(in srgb, var(--accent-2) 14%, transparent);
  color: var(--accent-2);
  border-color: color-mix(in srgb, var(--accent-2) 40%, transparent);
}
.ds-badge.ds-omni {
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 35%, transparent);
}
.ds-badge.ds-pipe {
  background: color-mix(in srgb, var(--fg) 8%, transparent);
  color: var(--fg);
  border-color: color-mix(in srgb, var(--fg) 25%, transparent);
}

/* ───────────────────────── pipeline carousel (horizontal scroll) ───────────────────────── */
.pl-carousel .carousel-track > .plc-card { flex-basis: 380px; }
@media (max-width: 720px) {
  .pl-carousel .carousel-track > .plc-card { flex-basis: 320px; }
}
.plc-card {
  position: relative;
  flex: 0 0 380px; min-width: 0;
  scroll-snap-align: start;
  background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 18px 18px 16px;
  display: flex; flex-direction: column;
}
.plc-card.plc-arrow-card::before {
  content: "→";
  position: absolute; left: -22px; top: 50%; transform: translateY(-50%);
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: grid; place-items: center;
  font-weight: 800; font-size: 14px;
  box-shadow: 0 4px 10px color-mix(in srgb, var(--primary) 35%, transparent);
  z-index: 1;
}
.plc-step {
  display: inline-block; align-self: flex-start;
  padding: 3px 10px; border-radius: 999px;
  background: color-mix(in srgb, var(--primary) 14%, transparent);
  color: var(--primary);
  font-size: 11px; font-weight: 700; letter-spacing: .05em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.plc-card h4 {
  margin: 12px 0 6px;
  font-size: 16px; font-weight: 700; color: var(--fg);
}
.plc-card > p {
  font-size: 13.5px; line-height: 1.55; color: var(--fg-muted);
  margin: 0 0 10px;
}
.plc-card > p b { color: var(--fg); }

.plc-art {
  border-radius: var(--r-sm); overflow: hidden;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--fg) 4%, transparent);
  margin-bottom: 8px;
  aspect-ratio: 16 / 11;
  display: flex; align-items: center; justify-content: center;
}
.plc-art img {
  display: block; width: 100%; height: 100%; object-fit: cover;
}
.plc-art.plc-concept {
  padding: 14px 12px;
  flex-direction: column; gap: 8px;
}
.plc-cap {
  font-size: 11px; letter-spacing: .04em; text-transform: uppercase;
  color: var(--fg-muted); margin-top: 4px;
}

.plc-eq {
  padding: 8px 12px; border-radius: 6px;
  background: color-mix(in srgb, var(--primary) 10%, transparent);
  color: var(--fg);
  border-left: 3px solid var(--primary);
  font-family: 'Plus Jakarta Sans', ui-monospace, monospace;
  font-size: 13.5px; font-weight: 600; line-height: 1.55;
  width: 100%; text-align: center;
}
.plc-eq sub { font-size: 0.78em; }

.plc-tensor {
  margin-top: auto; padding-top: 10px;
  font-family: ui-monospace, 'JetBrains Mono', monospace;
  font-size: 11.5px; color: var(--fg-muted);
  border-top: 1px dashed var(--border);
}
.plc-tensor b { color: var(--fg); font-weight: 700; }

/* feature pyramid pictogram */
.plc-pyramid {
  display: flex; align-items: flex-end; gap: 8px;
  width: 100%; height: 100%;
  justify-content: center; padding-top: 6px;
}
.plc-pyramid span {
  display: grid; place-items: center;
  font-family: ui-monospace, monospace; font-size: 10px;
  color: #fff; font-weight: 700;
  border-radius: 4px;
  border: 1px solid color-mix(in srgb, var(--fg) 18%, transparent);
}
.plc-pyramid span:nth-child(1) { width: 60px; height: 60px; }
.plc-pyramid span:nth-child(2) { width: 48px; height: 48px; }
.plc-pyramid span:nth-child(3) { width: 36px; height: 36px; }
.plc-pyramid span:nth-child(4) { width: 26px; height: 26px; }
.plc-pyramid-rgb span { background: color-mix(in srgb, var(--accent-2) 65%, #fff 0%); }
.plc-pyramid-dep span { background: color-mix(in srgb, var(--primary) 65%, #fff 0%); }

/* FFT diagram pictogram */
.plc-fft {
  width: 100%; display: flex; flex-direction: column; gap: 6px;
  font-size: 12px;
}
.plc-fft-row {
  display: grid; grid-template-columns: 50px auto 1fr; align-items: center;
  gap: 6px;
}
.plc-fft-row .lbl {
  font-family: ui-monospace, monospace; font-weight: 700;
  text-align: right; color: var(--fg);
}
.plc-fft-row .arr { color: var(--fg-muted); font-size: 11px; }
.plc-fft-row .bands { display: flex; gap: 4px; }
.plc-fft-row .bands i {
  flex: 1; padding: 3px 6px; border-radius: 3px;
  font-size: 10px; font-style: normal; text-align: center;
  font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
}
.plc-fft-row .lo { background: color-mix(in srgb, var(--primary) 28%, transparent); color: var(--primary); }
.plc-fft-row .hi { background: color-mix(in srgb, var(--accent-2) 28%, transparent); color: var(--accent-2); }
.plc-fft-mix {
  text-align: center; font-size: 11px; color: var(--fg-muted);
  padding: 4px 0;
}
.plc-fft-mix em { color: var(--primary); font-style: normal; font-weight: 700; }
.plc-fft-out {
  text-align: center; padding: 5px 0;
  background: color-mix(in srgb, var(--accent-2) 12%, transparent);
  border-radius: 4px;
  font-size: 12.5px; color: var(--fg);
}
.plc-fft-out b { color: var(--accent-2); margin-right: 4px; }

/* final 5-number grid */
.plc-out-grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 4px;
  width: 100%;
}
.plc-out-grid > div {
  padding: 8px 4px; border-radius: 4px;
  background: color-mix(in srgb, var(--accent-2) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-2) 35%, transparent);
  text-align: center;
  display: flex; flex-direction: column; gap: 2px;
}
.plc-out-grid b {
  font-size: 16px; font-weight: 800; color: var(--accent-2);
  line-height: 1;
}
.plc-out-grid span {
  font-size: 10px; color: var(--fg-muted);
  text-transform: uppercase; letter-spacing: .04em;
}

/* ───────────────── paper-style overview (compact auto-slider) ───────────────── */
.paper-overview.compact {
  position: relative;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 24px 36px 18px;
  max-width: min(1100px, 92vw); margin: 6px auto 0;
  box-shadow: 0 6px 20px color-mix(in srgb, var(--fg) 5%, transparent);
}
.po-head {
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px; margin-bottom: 18px;
}
.po-tag {
  display: inline-block; font-size: 12px;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--primary); font-weight: 700;
}
.po-head h2 {
  font-family: 'Plus Jakarta Sans', serif;
  font-size: 22px; line-height: 1.32; font-weight: 700;
  margin: 6px 0 0; color: var(--fg);
}

/* horizontal track: all three slides live side-by-side, the track translates */
.po-stage {
  position: relative; overflow: hidden;
  width: 100%;
  min-height: 220px;
}
.po-track {
  display: flex; align-items: flex-start;
  width: 300%;            /* 3 slides */
  transition: transform .55s cubic-bezier(.22,.61,.36,1);
  will-change: transform;
}
.po-slide {
  flex: 0 0 33.3333%;
  padding: 6px 18px 4px;
  box-sizing: border-box;
}
.po-slide h3 {
  font-size: 13px; font-weight: 800; letter-spacing: .12em;
  text-transform: uppercase; color: var(--primary);
  margin: 0 0 12px;
}
.po-slide p {
  font-size: 15px; line-height: 1.65; color: var(--fg);
  margin: 0 0 10px;
  font-family: 'Inter', Georgia, serif;
}
.po-slide p:last-child { margin-bottom: 0; }
.po-slide p.po-key {
  font-size: 14.5px; color: var(--fg);
  padding: 10px 14px; border-radius: 6px;
  background: color-mix(in srgb, var(--primary) 7%, transparent);
  border-left: 3px solid var(--primary);
  margin-top: 10px;
}

.po-bullets {
  margin: 4px 0 8px; padding-left: 20px;
}
.po-bullets li {
  font-size: 15px; line-height: 1.6; color: var(--fg);
  margin: 3px 0; font-family: 'Inter', Georgia, serif;
}
.po-bullets li b { color: var(--primary); font-weight: 700; }

.contributions.tight {
  list-style: none; padding: 0; margin: 0;
  counter-reset: contrib;
}
.contributions.tight li {
  counter-increment: contrib;
  position: relative;
  padding: 6px 0 6px 30px;
  font-size: 14.5px; line-height: 1.55; color: var(--fg);
  font-family: 'Inter', Georgia, serif;
}
.contributions.tight li::before {
  content: counter(contrib, upper-roman) ".";
  position: absolute; left: 0; top: 6px;
  width: 22px; text-align: right;
  font-family: 'Plus Jakarta Sans', serif;
  font-weight: 700; color: var(--primary);
  font-size: 13px;
}
.contributions.tight li b { color: var(--fg); font-weight: 700; }
.key-num {
  display: inline-block;
  padding: 0 5px; border-radius: 3px;
  background: color-mix(in srgb, var(--accent-2) 16%, transparent);
  color: var(--accent-2); font-weight: 800;
  font-family: 'Plus Jakarta Sans', monospace;
  font-size: 0.95em;
}

.po-dots {
  display: flex; justify-content: center; gap: 10px;
  margin-top: 18px;
}
.po-dots button {
  width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%;
  background: color-mix(in srgb, var(--fg) 22%, transparent);
  cursor: pointer; transition: background .25s, transform .25s, width .25s;
}
.po-dots button:hover { background: color-mix(in srgb, var(--fg) 40%, transparent); }
.po-dots button.is-active {
  background: var(--primary);
  width: 28px; border-radius: 5px;
}
.results {
  width: 100%; border-collapse: collapse;
  background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: var(--r-md); overflow: hidden;
  font-size: 14px;
}
.results th, .results td { padding: 12px 14px; text-align: right; }
.results th:first-child, .results td:first-child,
.results th:nth-child(2), .results td:nth-child(2) { text-align: left; }
.results thead { background: color-mix(in srgb, var(--primary) 6%, transparent); }
.results th {
  color: var(--fg-muted); font-weight: 600; font-size: 12px;
  text-transform: uppercase; letter-spacing: .04em;
}
.results tbody tr { border-top: 1px solid var(--border); }
.results tbody tr:hover { background: color-mix(in srgb, var(--primary) 4%, transparent); }
.results tr.ours { background: var(--ours-bg); color: var(--ours-fg); }
.results tr.ours:hover { background: var(--ours-bg); }
.results tr.ours b { color: var(--ours-fg); }

/* ───────────────────────── gallery ───────────────────────── */
.gallery {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 18px; margin-top: 24px;
}
.dish {
  background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: var(--r-md); overflow: hidden;
  box-shadow: var(--shadow-card); transition: transform var(--transition), box-shadow var(--transition);
}
.dish:hover { transform: translateY(-3px); box-shadow: var(--shadow-card-hover); }
.dish img { display: block; width: 100%; height: 220px; object-fit: cover; }
.dish-body { padding: 16px 18px; }
.dish-body h3 { margin: 0 0 4px; }
.dish-body .muted { font-size: 13px; margin-bottom: 12px; }
.nutri { list-style: none; padding: 0; margin: 0; font-size: 13.5px; }
.nutri li { display: flex; justify-content: space-between; padding: 5px 0; border-top: 1px solid var(--border); }
.nutri li:first-child { border-top: 0; }
.nutri b { color: var(--primary-2); }

/* ─── Fancy GT vs Prediction table inside each dish card ─── */
.dish-pred {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
  margin: 10px 0 4px;
  table-layout: fixed;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-alt);
  box-shadow: 0 1px 2px rgba(0,0,0,.03);
}

/* column widths — generous, breathable */
.dish-pred thead th:nth-child(1),
.dish-pred tbody td:nth-child(1) { width: 34%; }
.dish-pred thead th:nth-child(2),
.dish-pred tbody td:nth-child(2) { width: 30%; }
.dish-pred thead th:nth-child(3),
.dish-pred tbody td:nth-child(3) { width: 36%; }

/* Header — gradient bar with comfortable height */
.dish-pred thead th {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: #fff;
  padding: 12px 14px;
  text-align: right;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  border-bottom: 2px solid var(--accent);
}
.dish-pred thead th:first-child { text-align: left; }
/* Prediction header gets the warm accent gradient */
.dish-pred thead th:last-child {
  background: linear-gradient(135deg, var(--accent-2) 0%, var(--accent) 100%);
  color: #1f1300;
}

/* Body cells — generous vertical padding */
.dish-pred tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  text-align: right;
  white-space: nowrap;
  transition: background-color .15s ease;
}
.dish-pred tbody td:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--fg);
}
.dish-pred tbody td:nth-child(2) {
  color: var(--fg-muted);
  font-variant-numeric: tabular-nums;
}
.dish-pred tbody td:nth-child(3) {
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  font-variant-numeric: tabular-nums;
}
.dish-pred tbody td:nth-child(3) b {
  color: var(--accent-2);
  font-weight: 800;
  font-size: 13.5px;
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.dish-pred tbody tr:last-child td { border-bottom: 0; }

/* Subtle hover */
.dish-pred tbody tr:hover td  { background: color-mix(in srgb, var(--primary) 4%, transparent); }
.dish-pred tbody tr:hover td:nth-child(3) { background: color-mix(in srgb, var(--accent) 16%, transparent); }

/* ───────────────────────── carousel ───────────────────────── */
.carousel {
  position: relative;
  margin-top: 24px;
}
.carousel-track {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  padding: 4px 4px 18px;
  /* hide scrollbar but keep functionality */
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.carousel-track::-webkit-scrollbar { display: none; }
.carousel-track > .dish {
  flex: 0 0 320px;
  scroll-snap-align: start;
}
@media (min-width: 720px) {
  .carousel-track > .dish { flex-basis: 340px; }
}
@media (min-width: 1100px) {
  .carousel-track > .dish { flex-basis: 320px; }
}

.car-arrow {
  position: absolute;
  top: 110px;                        /* roughly the image vertical center */
  z-index: 5;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--primary);
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
}
.car-arrow:hover { transform: translateY(-1px); box-shadow: var(--shadow-card-hover); }
.car-arrow:disabled { opacity: 0.35; cursor: not-allowed; }
.car-prev { left: -10px; }
.car-next { right: -10px; }
@media (min-width: 1180px) {
  .car-prev { left: -22px; }
  .car-next { right: -22px; }
}

.car-dots {
  display: flex; justify-content: center; gap: 8px;
  margin-top: 12px;
}
.car-dots button {
  width: 8px; height: 8px; padding: 0;
  border: 0; border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.car-dots button[aria-current="true"] {
  background: var(--primary);
  transform: scale(1.4);
}

/* ───────────────────────── demo form ───────────────────────── */
/* demo-top: the moved-up live-demo section sits right after the hero,
   so give it a touch of breathing room and a subtle separator. */
.section.demo-top { padding-top: 28px; padding-bottom: 28px; }
.section.demo-top + .section { border-top: 1px solid var(--border); }
.card {
  background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: 22px; margin: 18px 0;
}
.card.hidden { display: none; }
.dropzone {
  display: block; cursor: pointer;
  border: 2px dashed var(--border); border-radius: var(--r-md);
  min-height: 220px; padding: 12px; text-align: center;
  transition: border-color var(--transition);
  position: relative; overflow: hidden;
}
.dropzone:hover { border-color: var(--primary-2); }
.dropzone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
#dropzone-label { display: block; padding: 80px 0; color: var(--fg-muted); }
#preview { display: none; max-width: 100%; max-height: 320px; border-radius: var(--r-sm); margin: 0 auto; }
.row { display: flex; justify-content: space-between; align-items: center; margin: 16px 0 6px; }
textarea {
  width: 100%; font: inherit; font-size: 14px; padding: 10px;
  background: var(--bg); color: var(--fg);
  border: 1px solid var(--border); border-radius: var(--r-sm); resize: vertical;
}
textarea:focus { outline: 2px solid var(--primary-2); outline-offset: 1px; }

/* ───────────────────────── footer / contact ───────────────────────── */
.footer {
  background: var(--bg-alt); border-top: 1px solid var(--border);
  padding: 48px 0 28px; margin-top: 0;
}
.contact-block {
  text-align: center;
}
.contact-block h3 {
  font-size: 20px; font-weight: 700; color: var(--fg);
  margin: 0 0 10px;
}
.contact-block p {
  margin: 4px 0; font-size: 14.5px; color: var(--fg);
}
.contact-block a {
  color: var(--primary); font-weight: 600;
  font-size: 15.5px;
}
.contact-block a:hover { text-decoration: underline; }
.contact-block hr {
  border: none; border-top: 1px solid var(--border);
  margin: 22px auto 14px; max-width: 320px;
}
.contact-block .muted { font-size: 12.5px; }

/* ───────────────────────── utilities ───────────────────────── */
.muted { color: var(--fg-muted); }
.small { font-size: 13px; }
code { background: var(--code-bg); padding: 1px 6px; border-radius: 4px; font-size: 12.5px; }

/* ───────────────────────── responsive ───────────────────────── */
@media (max-width: 720px) {
  h1 { font-size: 40px; }
  h2 { font-size: 24px; }
  .nav-links { gap: 14px; }
  .nav-links a:not(.cta) { display: none; }
  .hero { padding: 64px 0 56px; }
  .hero-stats { gap: 24px; }
}