/* Match 3 — Magenta */
:root {
    --m3-accent: #E879F9; --m3-accent-light: #F0ABFC; --m3-accent-dark: #86198F;
    --m3-bg: #150818; --m3-surface: #261028; --m3-surface-light: #381A3E;
    --m3-text: #FAEAF2; --m3-text-dim: #C9A0BD; --m3-gold: #FACC15;
    --g1: #ef4444; --g2: #f59e0b; --g3: #facc15; --g4: #22c55e; --g5: #3b82f6; --g6: #a855f7;
}
.m3-layout { display: flex; justify-content: center; gap: 20px; max-width: 1200px; margin: 0 auto; padding: 20px; min-height: calc(100vh - 80px); }
.ad-slot { width: 160px; flex-shrink: 0; }
.ad-slot--left, .ad-slot--right { display: flex; align-items: flex-start; }
.ad-placeholder--vertical { width: 160px; height: 600px; background: var(--m3-surface); border: 1px dashed var(--m3-text-dim); display: flex; align-items: center; justify-content: center; color: var(--m3-text-dim); font-size: 12px; border-radius: 8px; }
#match3-app { flex: 1; max-width: 560px; min-width: 320px; color: var(--m3-text); }
.screen { display: none; }
.screen.active { display: block; animation: m3Fade .3s ease; }
@keyframes m3Fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.m3-header { text-align: center; padding: 36px 0 24px; }
.m3-logo { display: inline-block; padding: 12px 20px; background: var(--m3-surface); border: 1px solid var(--m3-surface-light); border-radius: 12px; font-family: 'JetBrains Mono', monospace; color: var(--m3-accent-light); font-weight: 800; letter-spacing: 6px; margin-bottom: 14px; font-size: 1.5rem; text-shadow: 0 0 14px rgba(232,121,249,0.6); }
.m3-header h1 { font-family: 'Syne', sans-serif; font-size: 2.2rem; font-weight: 800; color: var(--m3-accent-light); letter-spacing: 4px; margin: 0; text-shadow: 0 0 24px rgba(232,121,249,0.5); }
.subtitle { color: var(--m3-text-dim); font-size: 1rem; margin-top: 8px; }
.card { background: var(--m3-surface); border-radius: 14px; padding: 20px; margin-bottom: 16px; border: 1px solid var(--m3-surface-light); }
.card__title { font-family: 'Syne', sans-serif; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 2px; color: var(--m3-accent-light); margin-bottom: 14px; }
.diff-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.diff-btn { background: var(--m3-surface-light); border: 1.5px solid transparent; color: var(--m3-text); padding: 14px 8px; border-radius: 10px; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 4px; font-family: 'DM Sans', sans-serif; font-size: 0.85rem; transition: transform .12s, border-color .12s; }
.diff-btn:hover { transform: translateY(-2px); border-color: var(--m3-accent); }
.diff-btn.selected { background: linear-gradient(135deg, var(--m3-accent-dark), var(--m3-accent)); border-color: var(--m3-accent-light); }
.diff-icon { font-family: 'JetBrains Mono', monospace; font-weight: 700; color: var(--m3-accent-light); }
.diff-btn.selected .diff-icon { color: #fff; }
.diff-desc { font-size: 0.72rem; color: var(--m3-text-dim); }
.m3-rules { margin: 0; padding-left: 1.1rem; color: var(--m3-text-dim); line-height: 1.6; font-size: 0.92rem; }
.m3-rules li + li { margin-top: 6px; }
.btn { font-family: 'DM Sans', sans-serif; font-weight: 600; border-radius: 10px; border: none; cursor: pointer; padding: 12px 22px; transition: transform .12s, box-shadow .12s; font-size: 0.95rem; }
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: linear-gradient(135deg, var(--m3-accent-dark), var(--m3-accent)); color: #fff; box-shadow: 0 6px 18px rgba(232,121,249,0.4); }
.btn--outline { background: transparent; border: 1.5px solid var(--m3-accent); color: var(--m3-accent-light); }
.btn--ghost { background: transparent; color: var(--m3-text-dim); }
.btn--lg { padding: 16px 36px; font-size: 1.05rem; }
.btn--sm { padding: 8px 14px; font-size: 0.85rem; }
.menu-actions { display: flex; flex-direction: column; align-items: center; gap: 8px; margin-top: 18px; }
#game-hud { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; background: var(--m3-surface); padding: 14px; border-radius: 12px; border: 1px solid var(--m3-surface-light); margin-bottom: 18px; }
.hud__cell { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.hud__label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1.5px; color: var(--m3-text-dim); }
.hud__value { font-family: 'JetBrains Mono', monospace; font-size: 1.3rem; font-weight: 700; color: var(--m3-accent-light); }
.m3-board-area { display: flex; justify-content: center; padding: 16px 0; }
.m3-board { display: grid; gap: 4px; padding: 14px; background: var(--m3-surface); border: 1px solid var(--m3-surface-light); border-radius: 14px; box-shadow: 0 20px 50px rgba(0,0,0,0.55); grid-template-columns: repeat(8, 52px); }
.m3-cell {
    width: 52px; height: 52px;
    background: var(--m3-bg);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    position: relative;
    transition: transform 0.1s ease;
}
.m3-cell:hover { transform: scale(0.96); }
.m3-cell.selected { box-shadow: 0 0 0 3px var(--m3-accent-light); }
.m3-gem {
    width: 40px; height: 40px;
    border-radius: 50%;
    box-shadow: inset 0 -4px 8px rgba(0,0,0,0.4), inset 0 4px 6px rgba(255,255,255,0.45), 0 4px 8px rgba(0,0,0,0.35);
    transition: transform 0.18s ease, opacity 0.2s ease;
    display: flex; align-items: center; justify-content: center;
    color: rgba(0,0,0,0.6);
    font-weight: 800;
    font-family: 'JetBrains Mono', monospace;
}
.m3-gem.c1 { background: radial-gradient(circle at 30% 30%, #fca5a5, var(--g1)); }
.m3-gem.c2 { background: radial-gradient(circle at 30% 30%, #fcd34d, var(--g2)); }
.m3-gem.c3 { background: radial-gradient(circle at 30% 30%, #fde68a, var(--g3)); }
.m3-gem.c4 { background: radial-gradient(circle at 30% 30%, #86efac, var(--g4)); }
.m3-gem.c5 { background: radial-gradient(circle at 30% 30%, #93c5fd, var(--g5)); }
.m3-gem.c6 { background: radial-gradient(circle at 30% 30%, #d8b4fe, var(--g6)); }
.m3-gem.line { border: 2px solid #fff; }
.m3-gem.bomb { background: radial-gradient(circle, #fff, #FACC15); color: #000; }
.m3-gem.popping { animation: m3Pop 0.28s ease forwards; }
@keyframes m3Pop { 0% { transform: scale(1); } 50% { transform: scale(1.25); } 100% { transform: scale(0); opacity: 0; } }
.m3-actions { display: flex; justify-content: center; gap: 10px; margin-top: 16px; }
.result-card, .lb-card { background: var(--m3-surface); border-radius: 16px; padding: 36px 28px; border: 1px solid var(--m3-surface-light); text-align: center; max-width: 480px; margin: 40px auto; box-shadow: 0 18px 36px rgba(0,0,0,0.4); }
.result-card h2 { font-family: 'Syne', sans-serif; font-size: 2rem; color: var(--m3-accent-light); letter-spacing: 4px; margin: 0 0 12px; }
.result-score { font-family: 'JetBrains Mono', monospace; font-size: 3rem; font-weight: 700; color: var(--m3-gold); margin: 8px 0; }
.result-detail { color: var(--m3-text-dim); font-size: 0.95rem; margin-bottom: 18px; line-height: 1.6; }
#nickname { width: 100%; padding: 12px 14px; border-radius: 10px; background: var(--m3-bg); color: var(--m3-text); border: 1.5px solid var(--m3-surface-light); font-size: 0.95rem; margin-bottom: 12px; box-sizing: border-box; font-family: 'DM Sans', sans-serif; }
#nickname:focus { outline: none; border-color: var(--m3-accent); }
.result-actions { display: flex; gap: 10px; justify-content: center; margin-bottom: 10px; }
.lb-card h2 { font-family: 'Syne', sans-serif; color: var(--m3-accent-light); letter-spacing: 4px; margin-bottom: 18px; }
#leaderboard-list { list-style: none; padding: 0; margin: 0 0 16px; text-align: left; counter-reset: lb; }
#leaderboard-list li { counter-increment: lb; display: flex; justify-content: space-between; padding: 10px 14px; background: var(--m3-bg); margin-bottom: 6px; border-radius: 8px; border: 1px solid var(--m3-surface-light); }
#leaderboard-list li::before { content: counter(lb); color: var(--m3-accent-light); font-weight: 700; margin-right: 10px; min-width: 24px; }
#leaderboard-list li:nth-child(1) { border-color: var(--m3-gold); }
#leaderboard-list .lb-score { font-family: 'JetBrains Mono', monospace; color: var(--m3-accent-light); font-weight: 600; }
@media (max-width: 900px) {
    .m3-layout { flex-direction: column; padding: 12px; }
    .ad-slot { width: 100%; }
    .ad-placeholder--vertical { width: 100%; height: 90px; }
    .m3-board { grid-template-columns: repeat(8, 38px); }
    .m3-cell { width: 38px; height: 38px; }
    .m3-gem { width: 30px; height: 30px; }
}