:root {
  --bg: #101820;
  --bg-soft: #17313d;
  --panel: rgba(11, 25, 33, 0.88);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #f5f1e8;
  --muted: #b8c7cf;
  --accent: #ffd166;
  --accent-strong: #ff6b35;
  --success: #53d8a5;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 209, 102, 0.18), transparent 28%),
    radial-gradient(circle at bottom right, rgba(83, 216, 165, 0.14), transparent 24%),
    linear-gradient(145deg, #0b141a, var(--bg) 55%, #132734);
}

.page-shell {
  width: min(1320px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 32px 0 40px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Archivo Black", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

h1 {
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 0.95;
  max-width: 8ch;
}

.hero-copy,
.card-copy,
#result-panel p {
  color: var(--muted);
}

.hero-copy {
  max-width: 48ch;
  margin: 16px 0 0;
  font-size: 1.05rem;
}

.scoreboard {
  display: flex;
  gap: 16px;
}

.scoreboard div,
.card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.scoreboard div {
  min-width: 120px;
  padding: 16px 18px;
  border-radius: 18px;
}

.scoreboard span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.scoreboard strong {
  font-size: 1.8rem;
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(340px, 0.8fr);
  gap: 24px;
}

.card {
  border-radius: 26px;
  padding: 20px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}

.viewer-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.zoom-controls {
  display: flex;
  gap: 8px;
}

.panorama {
  overflow: hidden;
  min-height: 640px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.03);
}

.viewer-frame {
  display: block;
  width: 100%;
  min-height: 590px;
  border: 0;
  border-radius: 18px;
  background: #091117;
}

.mapillary-viewer {
  width: 100%;
  min-height: 590px;
  border-radius: 18px;
  overflow: hidden;
  background: #091117;
}

.viewer-credit {
  margin: 10px 2px 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.viewer-credit a {
  color: var(--accent);
}

.viewer-fallback {
  display: grid;
  place-items: center;
  min-height: 590px;
  padding: 24px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  text-align: center;
}

.viewer-fallback a {
  color: var(--accent);
}

.guess-map {
  min-height: 420px;
  border-radius: 20px;
  overflow: hidden;
  margin: 16px 0;
}

.status-banner {
  margin-bottom: 14px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(83, 216, 165, 0.12);
  color: var(--success);
  border: 1px solid rgba(83, 216, 165, 0.2);
}

.status-banner.error {
  background: rgba(255, 107, 53, 0.12);
  color: #ffc3ad;
  border-color: rgba(255, 107, 53, 0.22);
}

.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 13px 18px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 120ms ease, opacity 120ms ease, background-color 120ms ease;
}

.icon-button,
.small-button {
  min-width: 44px;
  padding-inline: 14px;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), #ffb347);
  color: #23180e;
}

.ghost-button {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.result-panel {
  margin-top: 18px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.leaderboard-panel {
  margin-top: 18px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.leaderboard-header {
  margin-bottom: 8px;
}

.leaderboard-list {
  margin: 14px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.leaderboard-list li {
  margin-bottom: 10px;
  line-height: 1.35;
}

.leaderboard-empty {
  color: var(--muted);
  list-style: none;
  margin-left: -20px;
}

.hidden {
  display: none;
}

@media (max-width: 980px) {
  .page-shell {
    width: min(100vw - 24px, 1320px);
    padding-top: 24px;
  }

  .hero {
    flex-direction: column;
    align-items: start;
  }

  .game-layout {
    grid-template-columns: 1fr;
  }

  .panorama {
    min-height: 460px;
  }
}

@media (max-width: 640px) {
  .card {
    padding: 16px;
    border-radius: 22px;
  }

  .panorama {
    min-height: 340px;
  }

  .guess-map {
    min-height: 320px;
  }

  .scoreboard {
    width: 100%;
  }

  .scoreboard div {
    flex: 1;
  }
}