/* ============ Soccerbot portal — design tokens ============ */
:root {
  --bg: #f7f8fa;
  --bg-elev: #ffffff;
  --bg-elev-2: #f1f3f6;
  --border: #e3e6ec;
  --text: #14171c;
  --text-dim: #545c6c;
  --text-faint: #8991a1;
  --accent: #0d9488;
  --accent-2: #2563eb;
  --accent-warn: #b45309;
  --accent-bad: #dc2626;
  --radius: 14px;
  --maxw: 1120px;
  --serif: "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --mono: "SF Mono", "Cascadia Code", Consolas, Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, video { max-width: 100%; display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  background: linear-gradient(to bottom, rgba(0,0,0,0.5), rgba(0,0,0,0));
  transition: background 0.3s ease, backdrop-filter 0.3s ease;
  color: #fff;
}
.nav.scrolled {
  background: rgba(255,255,255,0.86);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(6px);
  color: var(--text);
  box-shadow: 0 1px 0 rgba(15,23,42,0.03);
}
.nav-brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 15px;
  color: inherit;
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-brand .dot { width: 8px; height: 8px; border-radius: 50%; background: #5eead4; box-shadow: 0 0 12px rgba(94,234,212,0.8); }
.nav-links { display: flex; gap: 24px; font-size: 13.5px; }
.nav-links a { color: inherit; opacity: 0.78; }
.nav-links a:hover { opacity: 1; text-decoration: none; }
.nav-cta {
  border: 1px solid rgba(255,255,255,0.35);
  padding: 7px 14px;
  border-radius: 999px;
  color: inherit !important;
  font-size: 13px;
}
.nav.scrolled .nav-cta { border-color: var(--border); }
.nav-cta:hover { border-color: var(--accent); text-decoration: none; }

/* ---------- Hero (scripted sequence) ---------- */
.hero {
  position: relative;
  height: 100svh;
  min-height: 560px;
  width: 100%;
  overflow: hidden;
  background: #000;
}
.hero-stage { position: absolute; inset: 0; }
.hero-media {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.9s ease;
}
.hero-media.active { opacity: 1; }

.hero-scrim {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.15) 30%, rgba(0,0,0,0.3) 72%, rgba(247,248,250,0.98) 100%);
  z-index: 2;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 28px 64px;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #5eead4;
  margin-bottom: 14px;
}
.hero-title {
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1.02;
  margin: 0 0 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  max-width: 900px;
  color: #fff;
}
.hero-sub {
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  color: rgba(255,255,255,0.8);
  max-width: 620px;
  margin: 0 0 28px;
}
.hero-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.badge {
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 6px 11px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.08);
}
/* ---------- Sections ---------- */
section { padding: 110px 0; position: relative; }
section.tight { padding: 80px 0; }
.section-head { max-width: 720px; margin-bottom: 52px; }
.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.kicker .num { color: var(--text-faint); }
h2.section-title {
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  margin: 0 0 14px;
  letter-spacing: -0.015em;
  font-weight: 700;
}
.section-desc { color: var(--text-dim); font-size: 1.02rem; max-width: 640px; }
.section-desc + .section-desc { margin-top: 10px; }

.media-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  box-shadow: 0 24px 48px -28px rgba(15,23,42,0.18);
}
.media-frame video, .media-frame iframe { width: 100%; display: block; background: #000; }
.media-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--text-faint);
  font-family: var(--mono);
}
.media-caption .src-link { color: var(--text-dim); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split.reverse .col-media { order: 2; }
.split.reverse .col-text { order: 1; }
@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; gap: 32px; }
  .split.reverse .col-media, .split.reverse .col-text { order: unset; }
}

.pill-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.pill-list .pill {
  font-size: 12.5px;
  font-family: var(--mono);
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-dim);
}

/* ---------- Models section ---------- */
.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 8px;
}
@media (max-width: 1000px) { .model-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .model-grid { grid-template-columns: 1fr; } }
.model-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
  position: relative;
}
.model-card.chosen {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 20px 44px -28px rgba(13,148,136,0.35);
}
.model-card .chosen-tag {
  position: absolute; top: -11px; right: 18px;
  background: var(--accent);
  color: #ffffff;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
}
.model-card h3 { margin: 0 0 6px; font-size: 1.1rem; }
.model-card p { margin: 0; color: var(--text-dim); font-size: 0.94rem; }
.model-card .stat-row { display: flex; gap: 18px; margin-top: 14px; flex-wrap: wrap; }
.model-card .stat { font-family: var(--mono); }
.model-card .stat b { display: block; font-size: 1.15rem; color: var(--text); font-family: var(--sans); font-weight: 700; }
.model-card .stat span { font-size: 11px; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.05em; }

.pipeline-note {
  margin-top: 22px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  color: var(--text-dim);
  font-size: 0.94rem;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.pipeline-note .ico { font-size: 1.1rem; line-height: 1; margin-top: 2px; }

/* ---------- Challenges ---------- */
.challenge-list { display: flex; flex-direction: column; gap: 14px; }
.challenge-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}
.challenge-card.status-resolved { border-left-color: var(--accent); }
.challenge-card.status-workaround { border-left-color: var(--accent-warn); }
.challenge-card.status-open { border-left-color: var(--accent-bad); }
.challenge-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.challenge-head h3 { margin: 0; font-size: 1.05rem; }
.status-badge {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.status-badge.resolved { background: rgba(94,234,212,0.14); color: var(--accent); }
.status-badge.workaround { background: rgba(251,191,36,0.14); color: var(--accent-warn); }
.status-badge.open { background: rgba(248,113,113,0.14); color: var(--accent-bad); }
.challenge-problem { margin: 0 0 10px; color: var(--text-dim); font-size: 0.94rem; }
.challenge-resolution { margin: 0; color: var(--text-dim); font-size: 0.94rem; }
.challenge-resolution strong { color: var(--text); }
.challenge-problem code { font-family: var(--mono); font-size: 0.88em; color: var(--text); background: rgba(15,23,42,0.06); padding: 1px 6px; border-radius: 4px; }

/* ---------- Architecture ---------- */
.arch-diagram {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--text-dim);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  overflow-x: auto;
  white-space: pre;
}

.stack-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin-top: 8px;
}
.stack-table th, .stack-table td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
}
.stack-table th { color: var(--text-faint); font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; }
.stack-table td.status-ok { color: var(--accent); font-family: var(--mono); font-size: 12px; }
.stack-table td.status-todo { color: var(--text-faint); font-family: var(--mono); font-size: 12px; }
.stack-table code { font-family: var(--mono); font-size: 0.88em; color: var(--text); background: rgba(15,23,42,0.06); padding: 1px 6px; border-radius: 4px; }

/* ---------- Closing clip ---------- */
.closing-clip { padding: 0; border-top: 1px solid var(--border); background: #000; }
.closing-clip-inner { position: relative; padding: 0; max-width: none; }
.closing-clip-video {
  width: 100%;
  max-height: 46vh;
  object-fit: cover;
  display: block;
  opacity: 0.92;
}
.closing-clip-caption {
  position: absolute;
  bottom: 16px; left: 28px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  background: rgba(0,0,0,0.4);
  padding: 5px 10px;
  border-radius: 999px;
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 40px;
  color: var(--text-faint);
  font-size: 13px;
}
footer .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
footer .foot-links { display: flex; gap: 20px; }
footer a { color: var(--text-dim); }

/* misc */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }