:root {
  --ink: #0a0e14;
  --panel: #12181f;
  --panel-raised: #161d25;
  --border: #232b36;
  --text-primary: #e8eaed;
  --text-muted: #8b95a1;
  --text-faint: #566072;
  --amber: #f5a623;
  --teal: #2dd4bf;
  --red: #ef4444;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.5;
  position: relative;
  min-height: 100vh;
}

/* subtle noise/grain texture over the whole page */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* faint ledger-line background on the main content area */
main.wrap {
  position: relative;
  z-index: 2;
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 96px;
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 37px,
    rgba(255, 255, 255, 0.018) 38px
  );
}

/* ---------- Topbar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.08em;
  font-size: 14px;
}

.brand-mark { color: var(--amber); }

.status-pill {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.status-pill .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-faint);
  transition: background 0.3s;
}

.status-pill.ok .dot { background: var(--teal); box-shadow: 0 0 6px var(--teal); }
.status-pill.error .dot { background: var(--red); box-shadow: 0 0 6px var(--red); }

/* ---------- Hero ---------- */
.hero { padding: 40px 0 32px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0 0 14px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}

.lede {
  color: var(--text-muted);
  font-size: 15.5px;
  max-width: 58ch;
  margin: 0 0 20px;
}

.lede strong { color: var(--text-primary); font-weight: 600; }
.cleared-word { font-family: var(--font-mono); color: var(--teal); font-weight: 500; }
.flagged-word { font-family: var(--font-mono); color: var(--red); font-weight: 500; }

.hero-links {
  font-family: var(--font-mono);
  font-size: 13px;
}

.hero-links a {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s, border-color 0.2s;
}

.hero-links a:hover { color: var(--amber); border-color: var(--amber); }
.hero-links .sep { color: var(--text-faint); margin: 0 8px; }

/* ---------- Banners ---------- */
.banner {
  font-size: 13.5px;
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 20px;
  border: 1px solid;
}

.banner code {
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.06);
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 12px;
}

.banner-error {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.banner-warn {
  background: rgba(245, 166, 35, 0.08);
  border-color: rgba(245, 166, 35, 0.3);
  color: #fcd34d;
}

/* ---------- Ledger card (form) ---------- */
.ledger-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 24px;
}

.ledger-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-raised);
}

.ledger-index {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
  letter-spacing: 0.08em;
  border: 1px solid rgba(245, 166, 35, 0.35);
  padding: 2px 7px;
  border-radius: 4px;
}

.ledger-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
}

form { padding: 22px; }

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 16px;
}

.field-grid.two-col { grid-template-columns: 1fr 1fr; }

.field { display: flex; flex-direction: column; gap: 6px; }

label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

input, select {
  background: var(--ink);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13.5px;
  padding: 9px 11px;
  width: 100%;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
}

select { appearance: none; cursor: pointer; }

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 26px 0 6px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.divider::before, .divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.note {
  color: var(--text-faint);
  font-size: 12.5px;
  margin: 0 0 16px;
}

.city-search { position: relative; display: flex; flex-direction: column; gap: 6px; }

.city-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 5;
  background: var(--panel-raised);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-top: 4px;
  max-height: 220px;
  overflow-y: auto;
  display: none;
}

.city-results.open { display: block; }

.city-result-item {
  padding: 9px 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
}

.city-result-item:last-child { border-bottom: none; }
.city-result-item:hover { background: rgba(245, 166, 35, 0.08); }

.city-result-item .pop {
  color: var(--text-faint);
  margin-left: 6px;
}

.city-picked {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--teal);
  min-height: 14px;
  margin: 0;
}

.predict-btn {
  margin-top: 28px;
  width: 100%;
  background: var(--amber);
  color: #1a1204;
  border: none;
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  padding: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: filter 0.15s, transform 0.1s;
}

.predict-btn:hover:not(:disabled) { filter: brightness(1.08); }
.predict-btn:active:not(:disabled) { transform: scale(0.99); }
.predict-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-spinner {
  display: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 2px solid rgba(26, 18, 4, 0.35);
  border-top-color: #1a1204;
  animation: spin 0.7s linear infinite;
}

.predict-btn.loading .btn-spinner { display: inline-block; }
.predict-btn.loading .btn-label { opacity: 0.6; }

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

/* ---------- Result card ---------- */
.result-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px 22px;
  text-align: center;
}

.stamp-zone {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
  perspective: 400px;
}

.stamp {
  width: 168px;
  height: 168px;
  border-radius: 50%;
  border: 4px double var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  transform: rotate(-14deg) scale(0.4);
  opacity: 0;
  animation: stampIn 0.45s cubic-bezier(0.2, 0.9, 0.3, 1.3) forwards;
}

.stamp.flagged { border-color: var(--red); }

.stamp-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--teal);
}

.stamp.flagged .stamp-text { color: var(--red); }

@keyframes stampIn {
  0% { transform: rotate(-20deg) scale(0.3); opacity: 0; }
  60% { transform: rotate(-11deg) scale(1.06); opacity: 1; }
  100% { transform: rotate(-11deg) scale(1); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .stamp { animation: none; transform: rotate(-11deg) scale(1); opacity: 1; }
}

.result-meta { max-width: 340px; margin: 0 auto; }

.probability-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.probability-label {
  font-size: 12.5px;
  color: var(--text-muted);
}

.probability-value {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
}

.probability-bar {
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
  margin-bottom: 16px;
}

.probability-bar-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--teal), var(--amber), var(--red));
  width: 0%;
  transition: width 0.5s ease;
}

.result-locations {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  margin: 0;
}

.new-prediction-btn {
  margin-top: 24px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 13.5px;
  padding: 10px 22px;
  border-radius: 7px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.new-prediction-btn:hover { border-color: var(--amber); color: var(--amber); }

/* ---------- Error banner ---------- */
.error-banner {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
  font-size: 13.5px;
  padding: 12px 16px;
  border-radius: 6px;
  margin-top: 20px;
}

/* ---------- Footer ---------- */
.foot {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 24px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .field-grid, .field-grid.two-col { grid-template-columns: 1fr; }
  .hero h1 { font-size: 26px; }
}