/* ── Cut The Rope — Forest Green Theme ── */
:root {
    --ctr-accent: #16A34A;
    --ctr-accent-light: #4ADE80;
    --ctr-accent-dark: #14532D;
    --ctr-glow: rgba(74, 222, 128, 0.5);
    --ctr-bg: #06150C;
    --ctr-surface: #0D2218;
    --ctr-surface-light: #163A26;
    --ctr-text: #E6F7EE;
    --ctr-text-dim: #88B89C;
    --ctr-gold: #FBBF24;
    --ctr-danger: #F87171;
    --ctr-rope: #B45309;
    --ctr-candy: #EF4444;
}

.ctr-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(--ctr-surface);
    border: 1px dashed var(--ctr-text-dim);
    display: flex; align-items: center; justify-content: center;
    color: var(--ctr-text-dim); font-size: 12px; border-radius: 8px;
}
#cuttherope-app { flex: 1; max-width: 720px; min-width: 320px; color: var(--ctr-text); }

.screen { display: none; }
.screen.active { display: block; animation: ctrFade 0.3s ease; }
@keyframes ctrFade { from {opacity:0; transform:translateY(8px);} to {opacity:1; transform:translateY(0);} }

.ctr-header { text-align: center; padding: 36px 0 24px; }
.ctr-logo { display: flex; justify-content: center; margin-bottom: 14px; }
.ctr-monster {
    width: 70px; height: 70px; border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, var(--ctr-accent-light), var(--ctr-accent-dark));
    position: relative; box-shadow: 0 0 26px var(--ctr-glow);
    animation: ctrBob 2.4s ease-in-out infinite;
}
@keyframes ctrBob { 0%,100% {transform:translateY(0);} 50% {transform:translateY(-6px);} }
.ctr-eye {
    position: absolute; top: 22px; width: 14px; height: 14px;
    background: #fff; border-radius: 50%;
}
.ctr-eye:nth-child(1) { left: 14px; }
.ctr-eye:nth-child(2) { right: 14px; }
.ctr-eye::after {
    content: ""; position: absolute; top: 4px; left: 4px;
    width: 6px; height: 6px; background: #000; border-radius: 50%;
}
.ctr-mouth {
    position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
    width: 24px; height: 12px; background: #000;
    border-radius: 0 0 12px 12px;
}
.ctr-header h1 {
    font-family: 'Syne', sans-serif; font-size: 2.4rem; font-weight: 800;
    color: var(--ctr-accent-light); letter-spacing: 4px; margin: 0;
    text-shadow: 0 0 24px var(--ctr-glow);
}
.subtitle { color: var(--ctr-text-dim); font-size: 1rem; margin-top: 8px; }

.card {
    background: var(--ctr-surface); border-radius: 14px; padding: 20px;
    margin-bottom: 16px; border: 1px solid var(--ctr-surface-light);
}
.card__title {
    font-family: 'Syne', sans-serif; font-size: 0.85rem;
    text-transform: uppercase; letter-spacing: 2px;
    color: var(--ctr-accent-light); margin-bottom: 14px;
}
.difficulty-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.diff-btn {
    background: var(--ctr-surface-light); border: 1.5px solid transparent;
    color: var(--ctr-text); padding: 14px 8px; border-radius: 10px;
    cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 4px;
    transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
    font-family: 'DM Sans', sans-serif; font-size: 0.85rem;
}
.diff-btn:hover { transform: translateY(-2px); border-color: var(--ctr-accent); }
.diff-btn.selected {
    background: linear-gradient(135deg, var(--ctr-accent-dark), var(--ctr-accent));
    border-color: var(--ctr-accent-light); box-shadow: 0 0 16px var(--ctr-glow);
}
.diff-icon {
    font-family: 'JetBrains Mono', monospace; font-size: 0.9rem;
    font-weight: 700; color: var(--ctr-accent-light); letter-spacing: 1.5px;
}
.diff-btn.selected .diff-icon { color: #fff; }
.diff-desc { font-size: 0.72rem; color: var(--ctr-text-dim); }
.diff-btn.selected .diff-desc { color: rgba(255,255,255,0.85); }

.ctr-rules {
    margin: 0; padding-left: 1.1rem; color: var(--ctr-text-dim);
    font-size: 0.92rem; line-height: 1.6;
}
.ctr-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 0.12s ease, box-shadow 0.12s ease, background 0.15s ease;
    font-size: 0.95rem;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
    background: linear-gradient(135deg, var(--ctr-accent), var(--ctr-accent-light));
    color: #fff; box-shadow: 0 6px 18px rgba(22,163,74,0.35);
}
.btn--primary:hover { box-shadow: 0 10px 24px rgba(22,163,74,0.5); }
.btn--outline {
    background: transparent; border: 1.5px solid var(--ctr-accent);
    color: var(--ctr-accent-light);
}
.btn--outline:hover { background: rgba(22,163,74,0.12); }
.btn--ghost { background: transparent; color: var(--ctr-text-dim); }
.btn--ghost:hover { color: var(--ctr-accent-light); }
.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(4,1fr); gap: 10px;
    background: var(--ctr-surface); padding: 14px; border-radius: 12px;
    border: 1px solid var(--ctr-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(--ctr-text-dim);
}
.hud__value {
    font-family: 'JetBrains Mono', monospace; font-size: 1.4rem;
    font-weight: 700; color: var(--ctr-accent-light);
}

.ctr-stage-area {
    display: flex; justify-content: center; padding: 8px 0;
}
#ctr-canvas {
    background: linear-gradient(180deg, #0c2316 0%, #061509 100%);
    border-radius: 14px; border: 1px solid var(--ctr-surface-light);
    box-shadow: 0 12px 36px rgba(0,0,0,0.45), inset 0 0 60px rgba(74,222,128,0.05);
    width: 100%; max-width: 640px; height: auto; cursor: crosshair;
    touch-action: none;
}
.ctr-actions {
    display: flex; justify-content: center; flex-wrap: wrap;
    gap: 10px; margin-top: 16px;
}

.result-card, .lb-card {
    background: var(--ctr-surface); border-radius: 16px; padding: 36px 28px;
    border: 1px solid var(--ctr-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(--ctr-accent-light); letter-spacing: 4px;
    margin: 0 0 12px; text-shadow: 0 0 24px var(--ctr-glow);
}
.result-score {
    font-family: 'JetBrains Mono', monospace; font-size: 3rem;
    font-weight: 700; color: var(--ctr-gold); margin: 8px 0;
}
.result-detail { color: var(--ctr-text-dim); font-size: 0.95rem; margin-bottom: 18px; line-height: 1.6; }
#nickname {
    width: 100%; padding: 12px 14px; border-radius: 10px;
    background: var(--ctr-bg); color: var(--ctr-text);
    border: 1.5px solid var(--ctr-surface-light);
    font-family: 'DM Sans', sans-serif; font-size: 0.95rem;
    margin-bottom: 12px; box-sizing: border-box;
}
#nickname:focus { outline: none; border-color: var(--ctr-accent); }
.result-actions { display: flex; gap: 10px; justify-content: center; margin-bottom: 10px; }

.lb-card h2 {
    font-family: 'Syne', sans-serif; color: var(--ctr-accent-light);
    letter-spacing: 4px; margin-bottom: 18px; text-shadow: 0 0 24px var(--ctr-glow);
}
#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(--ctr-bg); margin-bottom: 6px;
    border-radius: 8px; border: 1px solid var(--ctr-surface-light);
    font-family: 'DM Sans', sans-serif;
}
#leaderboard-list li::before {
    content: counter(lb); color: var(--ctr-accent-light);
    font-weight: 700; margin-right: 10px; min-width: 24px;
}
#leaderboard-list li:nth-child(1) { border-color: var(--ctr-gold); }
#leaderboard-list li:nth-child(1)::before { color: var(--ctr-gold); }
.lb-score { font-family: 'JetBrains Mono', monospace; color: var(--ctr-accent-light); font-weight: 600; }

@media (max-width: 900px) {
    .ctr-layout { flex-direction: column; padding: 12px; }
    .ad-slot { width: 100%; }
    .ad-placeholder--vertical { width: 100%; height: 90px; }
    .difficulty-grid { grid-template-columns: repeat(3,1fr); }
    .ctr-header h1 { font-size: 1.8rem; letter-spacing: 2px; }
    #game-hud { grid-template-columns: repeat(2,1fr); }
}