/* ── Base ──────────────────────────────────────────────────────────────────── */
:root {
  --bg:      #0b0c18;
  --surface: #131425;
  --surface2:#1a1b30;
  --border:  rgba(255,255,255,0.08);
  --text:    #e8e9f5;
  --muted:   #7778a0;
  --accent:  #7c3aed;
  --gold:    #f5c518;
  --red:     #e63950;
  --green:   #22c55e;
  --radius:  14px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex; flex-direction: column; align-items: center;
}

/* ── Screens ───────────────────────────────────────────────────────────────── */
.screen { display: none; width: 100%; max-width: 900px; padding: 2rem 1rem; }
.screen.active { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }

h1 { font-size: 2.2rem; font-weight: 800; letter-spacing: -0.03em; }
h1 span { color: var(--accent); }

/* ── Lobby ─────────────────────────────────────────────────────────────────── */
.lobby-actions { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }

.btn {
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  border: none; cursor: pointer;
  font-size: 1rem; font-weight: 600;
  transition: opacity 0.15s, transform 0.1s;
}
.btn:hover  { opacity: 0.88; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-outline { background: transparent; color: var(--text); border: 1.5px solid var(--border); }
.btn-sm { padding: 0.5rem 1.1rem; font-size: 0.875rem; }

.join-row { display: flex; gap: 0.5rem; align-items: center; }
.join-row input {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1.1rem; font-weight: 700;
  letter-spacing: 0.15em; text-transform: uppercase;
  padding: 0.6rem 1rem; width: 10rem; text-align: center;
  outline: none;
  transition: border-color 0.2s;
}
.join-row input:focus { border-color: var(--accent); }

/* ── Waiting ───────────────────────────────────────────────────────────────── */
.room-code {
  font-size: 3rem; font-weight: 900;
  letter-spacing: 0.25em; color: var(--gold);
  background: var(--surface);
  padding: 1rem 2rem; border-radius: var(--radius);
}
#qr-container canvas { border-radius: 8px; }
.waiting-hint { color: var(--muted); font-size: 0.9rem; text-align: center; }

/* ── Game screen ───────────────────────────────────────────────────────────── */
#screen-game.active { flex-direction: column; gap: 1rem; }

.game-header {
  display: flex; justify-content: space-between; align-items: center;
  width: 100%; max-width: 700px;
  font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em;
}
.player-info { display: flex; flex-direction: column; gap: 0.2rem; }
.player-info .name { font-size: 1rem; font-weight: 700; color: var(--text); }
.player-info .score { font-size: 0.85rem; }
.vs-badge { font-size: 1.4rem; font-weight: 900; color: var(--accent); }

.boards-row {
  display: flex; gap: 1.5rem; align-items: flex-start; justify-content: center;
}

.board-wrap { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; }
.board-label {
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--muted);
}
.board-wrap canvas {
  border-radius: 4px;
  transition: box-shadow 0.15s;
}
.board-wrap canvas.garbage-flash { box-shadow: 0 0 0 3px var(--red); }

.next-label {
  font-size: 0.65rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted); margin-top: 0.5rem;
}
#next-canvas { margin-top: 0.25rem; }

.controls-hint {
  font-size: 0.72rem; color: var(--muted); text-align: center;
}

/* ── Result overlay ────────────────────────────────────────────────────────── */
#result-overlay {
  display: none;
  position: fixed; inset: 0; z-index: 100;
  background: rgba(11,12,24,0.92);
  backdrop-filter: blur(6px);
  flex-direction: column; align-items: center; justify-content: center;
  gap: 1.5rem; padding: 2rem;
}
#result-overlay.active { display: flex; }

#result-banner {
  font-size: 2.8rem; font-weight: 900; letter-spacing: -0.02em;
}
#result-banner.win  { color: var(--green); }
#result-banner.lose { color: var(--red); }

.result-scores {
  display: flex; gap: 3rem; font-size: 1rem; color: var(--muted);
}
.result-scores strong { display: block; font-size: 1.6rem; color: var(--text); }

.leaderboards {
  display: flex; gap: 2rem; flex-wrap: wrap; justify-content: center;
}
.lb-table { min-width: 220px; }
.lb-table h3 {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 0.5rem;
}
.lb-table table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.lb-table td { padding: 0.25rem 0.5rem; }
.lb-table tr:nth-child(even) td { background: var(--surface); }
.lb-table td:last-child { text-align: right; color: var(--gold); font-weight: 700; }

.result-actions { display: flex; gap: 1rem; }

/* ── Mobile touch controls ─────────────────────────────────────────────────── */
.touch-controls {
  display: none;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem; width: 100%; max-width: 360px;
}
@media (max-width: 600px) {
  .touch-controls { display: grid; }
  .boards-row { gap: 0.75rem; }
}
.touch-btn {
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  color: var(--text); font-size: 1.3rem;
  padding: 0.9rem 0; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.touch-btn:active { background: var(--accent); }