:root {
  --bg1: #020617;
  --bg2: #111827;
  --bg3: #172033;
  --card: rgba(17, 24, 39, 0.92);
  --ink: #eff6ff;
  --ink-soft: #cbd5e1;
  --accent: #38bdf8;
  --accent-strong: #2563eb;
  --ok: #4ade80;
  --bad: #f87171;
  --warn: #fbbf24;
  --border: rgba(148, 163, 184, 0.2);
  --radius: 16px;
  --shadow: 0 18px 32px rgba(15, 23, 42, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Nunito", "Trebuchet MS", sans-serif;
  background:
    radial-gradient(circle at 15% 10%, rgba(56, 189, 248, 0.14), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(148, 163, 184, 0.16), transparent 38%),
    linear-gradient(180deg, var(--bg1) 0%, var(--bg2) 55%, var(--bg3) 100%);
  padding: 20px;
}

.back-button {
  position: fixed;
  z-index: 120;
  top: 20px;
  left: 20px;
  padding: 10px 20px;
  border-radius: 20px;
  color: #60a5fa;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.14);
  backdrop-filter: blur(5px);
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.back-button:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.app {
  width: min(980px, 100%);
  margin: 56px auto 0;
  display: grid;
  gap: 14px;
}

.hero {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

.hero h1 {
  margin: 0;
  font-family: "Bungee", "Verdana", sans-serif;
  letter-spacing: 1px;
  color: #e2e8f0;
  font-size: clamp(2rem, 7vw, 3.2rem);
}

.hero p {
  margin: 6px 0 0;
  font-weight: 700;
  color: var(--ink-soft);
}

.hero-stats {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.stat-chip {
  margin: 0;
  background: rgba(56, 189, 248, 0.18);
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: 999px;
  padding: 6px 12px;
  font-weight: 800;
  color: #dbeafe;
}

.game-over-badge {
  margin: 0;
  align-self: center;
  color: #fca5a5;
  font-weight: 800;
}

.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
}

.panel h2 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.tile-zone {
  min-height: 74px;
  border: 1px dashed rgba(148, 163, 184, 0.35);
  border-radius: 14px;
  padding: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: flex-start;
  background: rgba(15, 23, 42, 0.78);
}

.tile-zone.target {
  border-color: rgba(56, 189, 248, 0.75);
}

.letter-tile {
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(145deg, #fef3c7, #fdba74);
  color: #111827;
  font-weight: 800;
  font-size: 1.2rem;
  font-family: "Nunito", "Trebuchet MS", sans-serif;
  box-shadow: 0 4px 0 #a16207;
  cursor: pointer;
}

.letter-tile:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 #a16207;
}

.word-preview {
  margin: 12px 0 0;
  font-weight: 800;
}

.actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.action {
  border: 0;
  border-radius: 12px;
  padding: 12px;
  font-weight: 800;
  font-size: 0.95rem;
  cursor: pointer;
  background: rgba(148, 163, 184, 0.16);
  color: #eff6ff;
}

.action.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #eff6ff;
}

.action.primary:hover {
  filter: brightness(1.06);
}

.action.warning {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #111827;
}

.action:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.status {
  margin: 0;
  font-weight: 800;
}

.status.neutral {
  color: var(--ink-soft);
}

.status.good {
  color: #86efac;
}

.status.bad {
  color: #fca5a5;
}

.hint {
  margin: 8px 0 0;
  color: var(--ink-soft);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(20, 24, 30, 0.55);
  display: grid;
  place-items: center;
  padding: 14px;
  z-index: 200;
}

.modal-backdrop[hidden] {
  display: none;
}

.modal-card {
  width: min(460px, 100%);
  background: rgba(17, 24, 39, 0.98);
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.modal-card h2 {
  margin: 0;
  color: #e2e8f0;
}

.modal-card p {
  margin: 10px 0 16px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #e2e8f0;
}

@media (max-width: 760px) {
  body {
    padding: 12px;
  }

  .app {
    margin-top: 64px;
  }

  .back-button {
    top: 14px;
    left: 12px;
    padding: 8px 14px;
    border-radius: 14px;
    font-size: 0.92rem;
  }

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