:root {
  --bg: #0c1222;
  --panel: #1a2438;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --goku: #f59e0b;
  --vegeta: #3b82f6;
  --danger: #ef4444;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 20%, rgba(245, 158, 11, 0.18), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(59, 130, 246, 0.18), transparent 40%),
    linear-gradient(180deg, #0c1222, #111827);
}

body[data-theme="saiyan"] {
  background:
    radial-gradient(circle at 50% 15%, rgba(253, 224, 71, 0.55), transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(249, 115, 22, 0.25), transparent 35%),
    linear-gradient(180deg, #2a1a00, #0c1222);
}

body[data-theme="saiyan"] .fighter--active {
  box-shadow: 0 0 28px rgba(250, 204, 21, 0.55);
}

body[data-theme="namek"] {
  background:
    radial-gradient(circle at 30% 20%, rgba(74, 222, 128, 0.4), transparent 45%),
    radial-gradient(circle at 80% 60%, rgba(34, 211, 238, 0.2), transparent 40%),
    linear-gradient(180deg, #022c22, #0c1222);
}

body[data-theme="roshi"] {
  background:
    radial-gradient(circle at 70% 10%, rgba(251, 113, 133, 0.4), transparent 40%),
    radial-gradient(circle at 20% 70%, rgba(244, 114, 182, 0.2), transparent 35%),
    linear-gradient(180deg, #4c0519, #0c1222);
}

body[data-theme="ultra"] {
  background:
    radial-gradient(circle at 50% 0%, rgba(226, 232, 240, 0.35), transparent 40%),
    radial-gradient(circle at 70% 40%, rgba(56, 189, 248, 0.3), transparent 40%),
    radial-gradient(circle at 25% 70%, rgba(167, 139, 250, 0.25), transparent 40%),
    linear-gradient(180deg, #0f172a, #020617);
}

body[data-theme="ultra"] .fighter img {
  filter: drop-shadow(0 0 12px rgba(56, 189, 248, 0.65));
}

.game-header {
  text-align: center;
  padding: 1.5rem 1rem 0.5rem;
}

.game-header h1 {
  margin: 0.4rem 0;
  color: var(--goku);
}

.game-header p {
  margin: 0;
  color: var(--muted);
}

.turn {
  margin-top: 0.75rem !important;
  font-family: system-ui, sans-serif;
  font-size: 1.05rem;
  color: var(--text) !important;
  font-weight: 600;
}

.back {
  color: var(--muted);
  text-decoration: none;
  font-family: system-ui, sans-serif;
  font-size: 0.9rem;
}

.back:hover {
  color: var(--text);
}

.fighters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding: 2rem 1rem;
}

.fighter {
  background: var(--panel);
  border-radius: 14px;
  padding: 1.25rem;
  text-align: center;
  width: min(280px, 100%);
  border: 2px solid transparent;
  opacity: 0.55;
  transition: opacity 0.2s ease, border-color 0.2s ease;
}

.fighter--active {
  opacity: 1;
  border-color: var(--goku);
}

.fighter[data-id="vegeta"].fighter--active {
  border-color: var(--vegeta);
}

.fighter img {
  display: block;
  margin: 0 auto 0.75rem;
  border-radius: 10px;
  background: #218f00ea;
  image-rendering: pixelated;
}

.fighter h2 {
  margin: 0 0 0.75rem;
}

.mode {
  display: grid;
  gap: 0.3rem;
  margin: 0 auto 0.9rem;
  font-family: system-ui, sans-serif;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: left;
  width: 100%;
}

.mode select {
  padding: 0.4rem 0.5rem;
  border-radius: 8px;
  border: 1px solid #334155;
  background: #0b1020;
  color: var(--text);
}

.hp-bar {
  height: 14px;
  background: #0b1020;
  border-radius: 999px;
  overflow: hidden;
}

.hp-bar__fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #22c55e, #84cc16);
  transition: width 0.25s ease;
}

.hp-bar__fill--enemy {
  background: linear-gradient(90deg, var(--vegeta), #60a5fa);
}

.hp-text {
  margin: 0.45rem 0 0;
  font-family: system-ui, sans-serif;
  font-size: 0.9rem;
  color: var(--muted);
}

.vs {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--danger);
}

.controls {
  max-width: 520px;
  margin: 0 auto;
  padding: 0 1rem 1.5rem;
  display: grid;
  gap: 1rem;
  justify-items: center;
}

.attacks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  justify-content: center;
  margin-top: 1rem;
}

.attacks button,
.reset {
  font-family: system-ui, sans-serif;
  border: none;
  border-radius: 8px;
  padding: 0.55rem 0.75rem;
  cursor: pointer;
  color: #111;
  font-size: 0.85rem;
}

.attacks--goku button {
  background: var(--goku);
}

.attacks--vegeta button {
  background: var(--vegeta);
  color: #fff;
}

.attacks button.heal {
  background: #16a34a;
  color: #fff;
  width: 100%;
}

.attacks button:hover:not(:disabled),
.reset:hover {
  filter: brightness(1.08);
}

.attacks button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  filter: grayscale(0.4);
}

.reset {
  background: #64748b;
  color: #fff;
  padding: 0.7rem 1rem;
}

.log {
  text-align: center;
  min-height: 1.5rem;
  color: var(--muted);
  font-family: system-ui, sans-serif;
  padding: 0 1rem 2rem;
}