/* Ping Pong — Cyan Blue */
:root { --pp-accent:#0284C7; --pp-accent-light:#7DD3FC; --pp-accent-dark:#075985; --pp-bg:#04111C; --pp-surface:#0A1F32; --pp-surface-light:#102C46; --pp-text:#E3F4FF; --pp-text-dim:#88B2CE; --pp-gold:#FACC15; }
.pp-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(--pp-surface); border: 1px dashed var(--pp-text-dim); display: flex; align-items: center; justify-content: center; color: var(--pp-text-dim); font-size: 12px; border-radius: 8px; }
#pingpong-app { flex: 1; max-width: 880px; min-width: 320px; color: var(--pp-text); }
.screen { display: none; }
.screen.active { display: block; animation: ppFade .3s ease; }
@keyframes ppFade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.pp-header { text-align: center; padding: 36px 0 24px; }
.pp-logo { display: inline-flex; align-items: center; justify-content: center; width: 80px; height: 80px; border-radius: 22px; background: linear-gradient(135deg, var(--pp-accent-dark), var(--pp-accent)); font-size: 2.4rem; margin-bottom: 14px; box-shadow: 0 0 30px rgba(2,132,199,0.5); }
.pp-header h1 { font-family: 'Syne', sans-serif; font-size: 2.2rem; font-weight: 800; color: var(--pp-accent-light); letter-spacing: 4px; margin: 0; text-shadow: 0 0 24px rgba(2,132,199,0.5); }
.subtitle { color: var(--pp-text-dim); font-size: 1rem; margin-top: 8px; }
.card { background: var(--pp-surface); border-radius: 14px; padding: 20px; margin-bottom: 16px; border: 1px solid var(--pp-surface-light); }
.card__title { font-family: 'Syne', sans-serif; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 2px; color: var(--pp-accent-light); margin-bottom: 14px; }
.diff-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.diff-btn { background: var(--pp-surface-light); border: 1.5px solid transparent; color: var(--pp-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(--pp-accent); }
.diff-btn.selected { background: linear-gradient(135deg, var(--pp-accent-dark), var(--pp-accent)); border-color: var(--pp-accent-light); }
.diff-icon { font-family: 'JetBrains Mono', monospace; font-weight: 700; color: var(--pp-accent-light); }
.diff-btn.selected .diff-icon { color: #fff; }
.diff-desc { font-size: 0.72rem; color: var(--pp-text-dim); }
.pp-rules { margin: 0; padding-left: 1.1rem; color: var(--pp-text-dim); line-height: 1.6; font-size: 0.92rem; }
.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(--pp-accent-dark), var(--pp-accent)); color: #fff; box-shadow: 0 6px 18px rgba(2,132,199,0.4); }
.btn--outline { background: transparent; border: 1.5px solid var(--pp-accent); color: var(--pp-accent-light); }
.btn--ghost { background: transparent; color: var(--pp-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(--pp-surface); padding: 14px; border-radius: 12px; border: 1px solid var(--pp-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(--pp-text-dim); }
.hud__value { font-family: 'JetBrains Mono', monospace; font-size: 1.4rem; font-weight: 700; color: var(--pp-accent-light); }
#pp-canvas { width: 100%; max-width: 800px; aspect-ratio: 800/500; display: block; margin: 0 auto; background: radial-gradient(circle at 50% 50%, #0F2D44, #04111C); border: 1px solid var(--pp-surface-light); border-radius: 16px; box-shadow: 0 20px 50px rgba(0,0,0,0.55); cursor: ns-resize; }
.pp-actions { display: flex; justify-content: center; gap: 10px; margin-top: 16px; }
.result-card, .lb-card { background: var(--pp-surface); border-radius: 16px; padding: 36px 28px; border: 1px solid var(--pp-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(--pp-accent-light); letter-spacing: 4px; margin: 0 0 12px; }
.result-score { font-family: 'JetBrains Mono', monospace; font-size: 3rem; font-weight: 700; color: var(--pp-gold); margin: 8px 0; }
.result-detail { color: var(--pp-text-dim); font-size: 0.95rem; margin-bottom: 18px; line-height: 1.6; }
#nickname { width: 100%; padding: 12px 14px; border-radius: 10px; background: var(--pp-bg); color: var(--pp-text); border: 1.5px solid var(--pp-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(--pp-accent); }
.result-actions { display: flex; gap: 10px; justify-content: center; margin-bottom: 10px; }
.lb-card h2 { font-family: 'Syne', sans-serif; color: var(--pp-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(--pp-bg); margin-bottom: 6px; border-radius: 8px; border: 1px solid var(--pp-surface-light); }
#leaderboard-list li::before { content: counter(lb); color: var(--pp-accent-light); font-weight: 700; margin-right: 10px; min-width: 24px; }
#leaderboard-list li:nth-child(1) { border-color: var(--pp-gold); }
#leaderboard-list .lb-score { font-family: 'JetBrains Mono', monospace; color: var(--pp-accent-light); font-weight: 600; }
@media (max-width: 900px) { .pp-layout { flex-direction: column; padding: 12px; } .ad-slot { width: 100%; } .ad-placeholder--vertical { width: 100%; height: 90px; } }