:root {
  --bg-top: #f0f7ff;
  --bg-bottom: #f9efe2;
  --card: rgba(255, 255, 255, 0.86);
  --card-border: rgba(0, 44, 95, 0.14);
  --ink: #152238;
  --ink-soft: #42526b;
  --primary: #006f8c;
  --primary-strong: #04556b;
  --accent: #f3a712;
  --danger: #c73e1d;
  --ok: #1f7a43;
  --shadow: 0 20px 45px rgba(9, 39, 66, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 20%, rgba(0, 111, 140, 0.2), transparent 34%),
    radial-gradient(circle at 85% 15%, rgba(243, 167, 18, 0.22), transparent 32%),
    linear-gradient(155deg, var(--bg-top), var(--bg-bottom));
  display: grid;
  place-items: center;
  padding: 20px;
}

h1,
h2,
p,
li {
  margin: 0;
}

.app-shell {
  width: min(1100px, 100%);
  position: relative;
}

.screen {
  display: none;
  animation: reveal 380ms ease;
}

.screen-visible {
  display: block;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(4px);
}

.intro-card,
#instructions-screen .card,
#game-over-screen .card {
  padding: clamp(20px, 4vw, 42px);
  max-width: 700px;
  margin: 0 auto;
}

.intro-card h1 {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  margin: 10px 0 14px;
}

.intro-card p,
#instructions-screen li,
#game-over-screen p {
  color: var(--ink-soft);
  line-height: 1.55;
}

#instructions-screen ul {
  margin: 16px 0 24px;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}

.eyebrow {
  color: var(--primary-strong);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.78rem;
  font-weight: 700;
}

.actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  padding: 12px 20px;
  font-size: 1rem;
  font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 22px rgba(0, 111, 140, 0.35);
}

.btn-primary:hover {
  background: var(--primary-strong);
}

.btn-secondary {
  background: #fff;
  color: var(--ink);
  border: 1px solid rgba(21, 34, 56, 0.15);
}

.hud-card {
  padding: 14px;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 14px;
}

.hud-item {
  padding: 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(21, 34, 56, 0.08);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hud-label {
  color: var(--ink-soft);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.question-card {
  padding: 16px 18px;
  margin-bottom: 14px;
}

#question-text {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(1.2rem, 2.4vw, 1.65rem);
}

.feedback {
  margin-top: 8px;
  min-height: 24px;
  font-weight: 600;
}

.feedback.ok {
  color: var(--ok);
}

.feedback.fail {
  color: var(--danger);
}

.map-card {
  padding: 8px;
}

#map {
  width: 100%;
  height: min(64vh, 640px);
  border-radius: 14px;
  overflow: hidden;
}

.leaflet-container {
  background: #e8f2fa;
  font-family: "Space Grotesk", sans-serif;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 800px) {
  body {
    padding: 12px;
  }

  .hud-card {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #map {
    height: min(60vh, 520px);
  }
}