:root {
  color-scheme: light dark;
  --bg: #0f172a;
  --panel: #1e293b;
  --accent: #22c55e;
  --text: #f8fafc;
  --text-muted: #cbd5f5;
  --shadow: rgba(15, 23, 42, 0.25);
  font-family: "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #1b2843, var(--bg));
  background-color: var(--bg);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  padding: calc(1.5rem + env(safe-area-inset-top))
    calc(1.5rem + env(safe-area-inset-right))
    calc(1.5rem + env(safe-area-inset-bottom))
    calc(1.5rem + env(safe-area-inset-left));
}

.init-error {
  width: 100%;
  max-width: 720px;
  margin: 0 auto 1rem;
  padding: 1rem 1.5rem;
  border-radius: 16px;
  background: rgba(185, 28, 28, 0.85);
  color: #fef2f2;
  font-weight: 600;
  text-align: center;
  box-shadow: 0 18px 30px rgba(185, 28, 28, 0.35);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
}

.init-error__retry {
  padding: 0.55rem 1.25rem;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.65), rgba(16, 185, 129, 0.55));
  color: #0f172a;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 12px 24px rgba(34, 197, 94, 0.4);
}

.init-error__retry:focus-visible,
.init-error__retry:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 28px rgba(34, 197, 94, 0.45);
}

.init-error__retry:active {
  transform: translateY(0);
  box-shadow: 0 10px 20px rgba(34, 197, 94, 0.35);
}

.layout {
  display: grid;
  gap: 1rem;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

.panel {
  background: rgba(30, 41, 59, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: 0 20px 40px var(--shadow);
  backdrop-filter: blur(12px);
}

.header {
  text-align: center;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(45, 212, 191, 0.15));
}

.subtitle {
  margin-top: 0.5rem;
  color: var(--text-muted);
}

.main {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

canvas#game {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 3 / 2;
  max-height: min(60vh, 512px);
  border-radius: 16px;
  border: 2px solid rgba(148, 163, 184, 0.2);
  background: #0f172a;
  image-rendering: pixelated;
}

.hud {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hud-section {
  background: rgba(15, 23, 42, 0.65);
  border-radius: 16px;
  padding: 1rem;
  box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.1);
}

.hud-section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

#goals {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

#goals li {
  padding: 0.5rem 0.75rem;
  border-radius: 12px;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.2);
  color: var(--text-muted);
  font-size: 0.95rem;
}

#goals li.completed {
  background: rgba(34, 197, 94, 0.2);
  color: var(--text);
  text-decoration: line-through;
}

.actions {
  display: grid;
  gap: 0.5rem;
}

.action-button {
  padding: 0.75rem 1rem;
  border-radius: 12px;
  border: none;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.35), rgba(16, 185, 129, 0.35));
  backdrop-filter: blur(6px);
  box-shadow: 0 10px 20px rgba(34, 197, 94, 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.action-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.action-button:not(:disabled):active,
.action-button:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 26px rgba(34, 197, 94, 0.3);
}

.footer {
  font-size: 0.85rem;
  color: var(--text-muted);
}

@media (max-width: 900px) {
  body {
    align-items: flex-start;
    padding: 1rem;
    padding: calc(1rem + env(safe-area-inset-top))
      calc(1rem + env(safe-area-inset-right))
      calc(1rem + env(safe-area-inset-bottom))
      calc(1rem + env(safe-area-inset-left));
  }

  .main {
    grid-template-columns: 1fr;
  }

  canvas#game {
    max-height: 360px;
  }
}

@media (max-width: 600px) {
  body {
    padding: 0.75rem;
    padding: calc(0.75rem + env(safe-area-inset-top))
      calc(0.75rem + env(safe-area-inset-right))
      calc(0.75rem + env(safe-area-inset-bottom))
      calc(0.75rem + env(safe-area-inset-left));
  }

  .panel {
    padding: 1rem;
  }

  .header h1 {
    font-size: 1.5rem;
  }

  .subtitle {
    font-size: 0.95rem;
  }

  canvas#game {
    max-height: 300px;
  }
}

@media (max-width: 420px) {
  .header h1 {
    font-size: 1.35rem;
  }

  .subtitle {
    font-size: 0.9rem;
  }
}