/* F1 Snapshot — cinematic dark theme */

:root {
  --bg: #0d0d0f;
  --bg-card: #141416;
  --red: #e8383a;
  --red-bright: #ff4b4d;
  --teal: #2dd4bf;
  --text: #f5f5f0;
  --text-muted: #8a8a90;
  --border: #2a2a2e;
  --font-display: 'Barlow Condensed', 'Segoe UI', sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1100px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(ellipse 80% 40% at 50% -10%, rgba(232, 56, 58, 0.10), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--teal); }

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem clamp(1rem, 4vw, 3rem);
  background: rgba(13, 13, 15, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.wordmark span { color: var(--red); }

/* Race picker (shared by hero + header forms) */

.race-picker {
  display: flex;
  align-items: end;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.race-picker--compact { align-items: center; }

.field { display: flex; flex-direction: column; gap: 0.3rem; }

.field label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

select {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.55rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  min-width: 10rem;
}

.race-picker--compact select { min-width: 9rem; padding: 0.4rem 0.6rem; font-size: 0.85rem; }

select:focus-visible { outline: 2px solid var(--teal); outline-offset: 1px; }
select:disabled { opacity: 0.5; }

.btn-primary, .btn-secondary {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  display: inline-block;
  text-decoration: none;
}

.btn-primary {
  background: var(--red);
  color: #fff;
  padding: 0.7rem 1.75rem;
  font-size: 1rem;
}

.btn-primary:hover:not(:disabled) { background: var(--red-bright); transform: translateY(-1px); }
.btn-primary:disabled { background: var(--border); color: var(--text-muted); cursor: not-allowed; }

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 1.1rem;
  font-size: 0.85rem;
}

.btn-secondary:hover { border-color: var(--teal); color: var(--teal); }

/* Landing hero */

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(3rem, 10vw, 7rem) clamp(1rem, 4vw, 3rem) 4rem;
  text-align: center;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  line-height: 1.05;
  margin: 0 0 1rem;
  color: var(--text);
}

@supports (background-clip: text) or (-webkit-background-clip: text) {
  .hero h1 {
    background: linear-gradient(180deg, var(--text), #b9b9c0);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
  }
}

.hero-sub {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 40rem;
  margin: 0 auto 2.5rem;
}

.race-picker--hero {
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: inline-flex;
}

/* Race page hero */

.race-hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem clamp(1rem, 4vw, 3rem) 2rem;
}

.eyebrow {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  color: var(--teal);
  margin: 0 0 0.5rem;
}

.race-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(2.2rem, 5.5vw, 3.5rem);
  line-height: 1.05;
  margin: 0 0 0.6rem;
  padding-left: 0.75rem;
  border-left: 4px solid var(--red);
}

.race-hero-location { color: var(--text-muted); margin: 0 0 1.75rem; }

.stat-row { display: flex; gap: 2.5rem; flex-wrap: wrap; }

.stat-label {
  display: block;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.15rem;
}

.stat-value { display: block; font-size: 1.4rem; font-weight: 600; }

/* Chart sections */

.chart-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.25rem clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--border);
}

.chart-section h2 {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-weight: 600;
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  margin: 0 0 0.5rem;
}

.section-copy { color: var(--text-muted); margin: 0 0 1.5rem; max-width: 42rem; }

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
}

/* Strategy + position-changes charts carry ~20 text labels each — below a
   min-width they'd shrink to unreadable, so the card scrolls instead of the
   chart shrinking past legibility. */
.chart-card--dense { overflow-x: auto; }
.chart-card--dense img { min-width: 640px; width: 100%; }

/* Footer */

.site-footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 2rem 1rem 3rem;
}

.site-footer a { color: var(--text-muted); }

/* Loading overlay */

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13, 13, 15, 0.96);
  z-index: 100;
}

/* [hidden] and .loading-overlay are equal specificity, so display must only
   be declared on the :not([hidden]) case — otherwise this rule always wins
   the source-order tiebreak and the overlay never actually hides. */
.loading-overlay:not([hidden]) {
  display: flex;
  align-items: center;
  justify-content: center;
}

.loading-content { text-align: center; padding: 0 1.5rem; }

.loading-spinner {
  width: 3rem;
  height: 3rem;
  border: 3px solid var(--border);
  border-top-color: var(--red);
  border-radius: 50%;
  margin: 0 auto 1.25rem;
  animation: spin 0.9s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

#loading-text {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 1.1rem;
  margin: 0 0 0.4rem;
}

.loading-hint { color: var(--text-muted); font-size: 0.9rem; margin: 0; }

/* Mobile */

@media (max-width: 640px) {
  .site-header { flex-direction: column; align-items: stretch; gap: 0.6rem; }
  .race-picker--compact { flex-wrap: wrap; }
  .race-picker--compact select { min-width: 0; flex: 1 1 8rem; }

  .race-picker--hero { display: flex; width: 100%; padding: 1.25rem; }
  .field { width: 100%; }
  select { min-width: 0; width: 100%; }
  .race-picker--hero .btn-primary { width: 100%; }

  .stat-row { gap: 1.5rem; }
}