:root {
  --bg-a: #f6f2e8;
  --bg-b: #e3f0dd;
  --panel: #ffffff;
  --ink: #1f2a1f;
  --accent: #226c3d;
  --warn: #8a3c22;
  --muted: #5f6a61;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 12% 10%, #fff6d8 0%, transparent 36%),
    radial-gradient(circle at 92% 20%, #d2ebc8 0%, transparent 42%), linear-gradient(160deg, var(--bg-a), var(--bg-b));
}

main {
  width: min(1020px, calc(100% - 2rem));
  margin: 0 auto 3rem;
}

.hero {
  text-align: center;
  padding: 1.3rem 1rem 0.8rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
}

.tagline {
  margin: 0.5rem auto 0;
  max-width: 760px;
  color: var(--muted);
}

.panel {
  background: var(--panel);
  border: 1px solid #dbe6d8;
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 8px 20px rgba(30, 47, 32, 0.08);
}

.game-wrap {
  display: grid;
  gap: 0.9rem;
}

.canvas-wrap {
  background: var(--panel);
  border: 1px solid #dbe6d8;
  border-radius: 14px;
  box-shadow: 0 8px 20px rgba(30, 47, 32, 0.08);
  padding: 0.75rem;
}

#game-canvas {
  width: 100%;
  height: auto;
  border-radius: 10px;
  display: block;
}

.ad-slot {
  /* Temporary hide for AdSense display units. Remove this line to re-enable. */
  display: none;
  margin: 0.9rem 0;
  border: 1px dashed #8ba889;
  color: #3f5e4a;
  background: rgba(255, 255, 255, 0.56);
  border-radius: 10px;
  min-height: 86px;
  place-items: center;
}

.goal-row,
.row {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  align-items: center;
}

.daily-label {
  font-weight: 700;
  margin: 0 0 0.6rem;
}

.start-screen p {
  margin-top: 0.5rem;
}

.move-form {
  margin: 0.6rem 0;
}

input {
  border: 1px solid #afc1ae;
  border-radius: 8px;
  padding: 0.45rem 0.6rem;
  font-size: 1rem;
  text-transform: uppercase;
  width: 130px;
}

button {
  border: none;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.08);
}

.status-text {
  min-height: 1.4rem;
  color: var(--warn);
}

.path-list {
  padding-left: 1.2rem;
  margin: 0.4rem 0 0;
}

.path-list li {
  letter-spacing: 0.06em;
}

.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 0.7rem;
}

.archive-card {
  border: 1px solid #d8e4d7;
  border-radius: 10px;
  padding: 0.6rem;
  background: #fbfffb;
}

.hidden {
  display: none !important;
}

.interstitial {
  position: fixed;
  inset: 0;
  background: rgba(26, 33, 27, 0.68);
  display: grid;
  place-items: center;
  z-index: 10;
}

.interstitial-card {
  width: min(360px, calc(100% - 2rem));
  background: #ffffff;
  padding: 1rem;
  border-radius: 12px;
  text-align: center;
}

@media (max-width: 640px) {
  main {
    width: calc(100% - 1rem);
  }

  .panel,
  .canvas-wrap {
    padding: 0.8rem;
  }
}