/* ───────────────────────────────────────────────
   Morpion & Puissance 4  ·  style.css
   Même langage visuel que les autres jeux :
   fond dégradé sombre, cartes translucides.
─────────────────────────────────────────────── */

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

:root {
  --bg-start: #1e1b2e;
  --bg-end:   #2d2a45;
  --surface:  rgba(255, 255, 255, 0.06);
  --card:     rgba(255, 255, 255, 0.1);
  --border:   rgba(255, 255, 255, 0.12);
  --text:     #e8e8f0;
  --muted:    #a5a3bd;
  --accent:   #ec4899;
  --p1:       #38bdf8;
  --p2:       #ec4899;
  --disc-red:    #ef4444;
  --disc-yellow: #facc15;
  --green:    #4CAF50;
  --radius:   12px;
  --radius-lg: 20px;
  --shadow:   0 4px 20px rgba(0,0,0,0.35);
  font-size: 16px;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: linear-gradient(160deg, var(--bg-start) 0%, var(--bg-end) 100%);
  color: var(--text);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

/* ── Screens ─────────────────────────────── */
.screen {
  display: none;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 480px;
  padding: 16px 12px 24px;
}
.screen.active { display: flex; }

/* ── Menu ────────────────────────────────── */
.menu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow);
  margin-top: 20px;
}
.home-link {
  display: inline-block;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  margin-bottom: 12px;
  transition: color 0.15s ease;
}
.home-link:hover, .home-link:active { color: var(--accent); }

.menu-logo { font-size: 4rem; margin-bottom: 8px; }
.menu-card h1 { font-size: 1.4rem; color: var(--accent); margin-bottom: 4px; }
.menu-card p  { color: var(--muted); margin-bottom: 28px; font-size: 0.9rem; }

.game-choice-area { display: flex; flex-direction: column; gap: 12px; }

.game-btn {
  display: block;
  width: 100%;
  padding: 18px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.18s, border-color 0.18s, transform 0.1s;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.game-btn:hover, .game-btn:active { background: var(--border); border-color: var(--accent); }
.game-btn:active { transform: scale(0.97); }
.game-btn.selected { border-color: var(--accent); background: rgba(236,72,153,0.15); }

.step { margin-top: 24px; }
.step.hidden { display: none; }
.step-label { color: var(--muted); font-size: 0.85rem; margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.06em; }

.mode-select { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
.mode-option-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.18s, border-color 0.18s, transform 0.1s;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.mode-option-btn span { font-size: 0.8rem; font-weight: 400; color: var(--muted); }
.mode-option-btn:hover, .mode-option-btn:active { border-color: var(--green); background: rgba(76,175,80,0.15); }
.mode-option-btn:active { transform: scale(0.97); }
.mode-option-btn.selected { border-color: var(--green); background: rgba(76,175,80,0.15); }

/* ── Game Panel ──────────────────────────── */
.game-panel {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.game-header {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
}
.status-text { font-size: 1rem; font-weight: 600; text-align: center; }
.status-text .turn-p1 { color: var(--p1); }
.status-text .turn-p2 { color: var(--p2); }
.status-text .turn-red { color: var(--disc-red); }
.status-text .turn-yellow { color: var(--disc-yellow); }

/* ── Morpion board ───────────────────────── */
.morpion-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  width: min(85vw, 320px);
}
.morpion-cell {
  aspect-ratio: 1;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(2rem, 10vw, 3rem);
  font-weight: 800;
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.morpion-cell:not(:disabled):hover { background: var(--border); }
.morpion-cell.x { color: var(--p1); }
.morpion-cell.o { color: var(--p2); }
.morpion-cell:disabled { cursor: default; }
.morpion-cell.win { border-color: var(--green); background: rgba(76,175,80,0.2); }

/* ── Puissance 4 board ───────────────────── */
.p4-board {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  width: min(95vw, 420px);
  background: #1d3fae;
  border-radius: var(--radius-lg);
  padding: 10px;
  box-shadow: var(--shadow);
}
.p4-cell {
  aspect-ratio: 1;
  background: rgba(0,0,0,0.35);
  border-radius: 50%;
  padding: 3px;
  cursor: pointer;
}
.p4-disc {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: transparent;
  transition: background 0.15s, transform 0.15s;
}
.p4-cell:hover .p4-disc:not(.red):not(.yellow) { background: rgba(255,255,255,0.12); }
.p4-disc.red { background: var(--disc-red); box-shadow: inset 0 -3px 6px rgba(0,0,0,0.3); }
.p4-disc.yellow { background: var(--disc-yellow); box-shadow: inset 0 -3px 6px rgba(0,0,0,0.3); }
.p4-disc.win { transform: scale(1.12); box-shadow: 0 0 0 3px var(--green), inset 0 -3px 6px rgba(0,0,0,0.3); }

/* ── Footer actions ──────────────────────── */
.game-footer-actions { width: 100%; display: flex; flex-direction: column; gap: 10px; }
.action-btn {
  width: 100%;
  padding: 14px;
  border: 2px solid var(--green);
  border-radius: var(--radius);
  background: var(--green);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.1s, background 0.18s;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.action-btn:active { transform: scale(0.97); }
.action-btn.hidden { display: none; }

.back-btn {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--muted);
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color 0.18s, color 0.18s;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.back-btn:hover { border-color: #FF5252; color: #FF5252; }

@media (min-width: 600px) {
  .p4-board { width: 440px; }
}