/* ── Color Mixer — Amber Theme ── */
:root {
    --cmx-accent: #F59E0B;
    --cmx-accent-light: #FCD34D;
    --cmx-accent-dark: #B45309;
    --cmx-bg: #1A130A;
    --cmx-surface: #2A2010;
    --cmx-surface-light: #3B2C18;
    --cmx-text: #FEF3C7;
    --cmx-text-dim: #D4B583;
    --cmx-border: #4A3A20;
    --cmx-success: #34D399;
    --cmx-gold: #FACC15;
    --cmx-danger: #F87171;
    --cmx-glow: rgba(252, 211, 77, 0.5);
    --cmx-r: #EF4444;
    --cmx-g: #22C55E;
    --cmx-b: #3B82F6;
}

.cmx-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(--cmx-surface);
    border: 1px dashed var(--cmx-text-dim);
    display: flex; align-items: center; justify-content: center;
    color: var(--cmx-text-dim); font-size: 12px; border-radius: 8px;
}
#colormixer-app { flex: 1; max-width: 760px; min-width: 320px; color: var(--cmx-text); }

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

.cmx-header { text-align: center; padding: 36px 0 24px; }
.cmx-logo {
    display: inline-flex; gap: 0;
    background: var(--cmx-surface);
    padding: 10px;
    border-radius: 10px;
    margin-bottom: 14px;
    border: 1px solid var(--cmx-border);
}
.cmx-logo span {
    width: 36px; height: 36px;
    border-radius: 50%;
    box-shadow: 0 0 14px currentColor;
    margin: 0 -8px;
    border: 3px solid var(--cmx-surface);
    mix-blend-mode: screen;
}
.cmx-header h1 {
    font-family: 'Syne', sans-serif;
    font-size: 2.6rem; font-weight: 800;
    color: var(--cmx-accent-light);
    letter-spacing: 4px; margin: 0;
    text-shadow: 0 0 26px var(--cmx-glow);
}
.subtitle { color: var(--cmx-text-dim); font-size: 1rem; margin-top: 8px; }

.card {
    background: var(--cmx-surface);
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 16px;
    border: 1px solid var(--cmx-border);
}
.card__title {
    font-family: 'Syne', sans-serif;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--cmx-accent-light);
    margin-bottom: 14px;
}

.difficulty-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.diff-btn {
    background: var(--cmx-surface-light);
    border: 1.5px solid transparent;
    color: var(--cmx-text);
    padding: 14px 8px;
    border-radius: 10px;
    cursor: pointer;
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    transition: transform 0.15s, border-color 0.15s, background 0.15s;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.85rem;
}
.diff-btn:hover { transform: translateY(-2px); border-color: var(--cmx-accent); }
.diff-btn.selected {
    background: linear-gradient(135deg, var(--cmx-accent-dark), var(--cmx-accent));
    border-color: var(--cmx-accent-light);
    box-shadow: 0 0 16px rgba(245, 158, 11, 0.45);
}
.diff-icon { font-size: 1rem; font-weight: 700; color: var(--cmx-accent-light); }
.diff-btn.selected .diff-icon { color: #fff; }
.diff-desc { font-size: 0.72rem; color: var(--cmx-text-dim); font-family: 'JetBrains Mono', monospace; }
.diff-btn.selected .diff-desc { color: rgba(255,255,255,0.85); }

.cmx-rules {
    margin: 0; padding-left: 1.1rem;
    color: var(--cmx-text-dim);
    font-size: 0.92rem; line-height: 1.6;
}
.cmx-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, box-shadow 0.12s, background 0.15s;
    font-size: 0.95rem;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
    background: linear-gradient(135deg, var(--cmx-accent), var(--cmx-accent-light));
    color: #1A130A;
    box-shadow: 0 6px 18px rgba(245, 158, 11, 0.35);
}
.btn--primary:hover { box-shadow: 0 10px 24px rgba(245, 158, 11, 0.5); }
.btn--outline {
    background: transparent;
    border: 1.5px solid var(--cmx-accent);
    color: var(--cmx-accent-light);
}
.btn--outline:hover { background: rgba(245, 158, 11, 0.12); }
.btn--ghost { background: transparent; color: var(--cmx-text-dim); }
.btn--ghost:hover { color: var(--cmx-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(--cmx-surface); padding: 14px;
    border-radius: 12px; border: 1px solid var(--cmx-border);
    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(--cmx-text-dim);
}
.hud__value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.4rem; font-weight: 700;
    color: var(--cmx-accent-light);
}
.hud__timer { color: var(--cmx-gold); }

.cmx-stage {
    background: var(--cmx-surface);
    border-radius: 12px;
    border: 1px solid var(--cmx-border);
    padding: 20px;
}

.cmx-swatches {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}
.swatch-block {
    text-align: center;
}
.swatch-label {
    font-family: 'Syne', sans-serif;
    font-size: 0.78rem;
    color: var(--cmx-text-dim);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
}
.swatch {
    width: 100%;
    height: 140px;
    border-radius: 14px;
    border: 2px solid var(--cmx-border);
    background: #888;
    transition: background 0.2s ease;
    box-shadow: inset 0 2px 8px rgba(0,0,0,0.3);
}
.swatch-rgb {
    margin-top: 8px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--cmx-text-dim);
    font-size: 0.85rem;
}

.cmx-sliders {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 16px;
}
.slider-row {
    display: grid;
    grid-template-columns: 32px 1fr 56px;
    align-items: center;
    gap: 12px;
}
.slider-label {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 800;
    font-size: 1.1rem;
    text-align: center;
}
.slider-label--r { color: var(--cmx-r); text-shadow: 0 0 8px var(--cmx-r); }
.slider-label--g { color: var(--cmx-g); text-shadow: 0 0 8px var(--cmx-g); }
.slider-label--b { color: var(--cmx-b); text-shadow: 0 0 8px var(--cmx-b); }
.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 12px;
    border-radius: 6px;
    outline: none;
    cursor: pointer;
}
.slider--r { background: linear-gradient(to right, #000, var(--cmx-r)); }
.slider--g { background: linear-gradient(to right, #000, var(--cmx-g)); }
.slider--b { background: linear-gradient(to right, #000, var(--cmx-b)); }
.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--cmx-accent);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}
.slider::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--cmx-accent);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}
.slider-val {
    font-family: 'JetBrains Mono', monospace;
    color: var(--cmx-text);
    font-weight: 600;
    text-align: right;
}

.cmx-feedback {
    text-align: center;
    min-height: 24px;
    margin-bottom: 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    font-weight: 600;
}
.cmx-feedback.ok { color: var(--cmx-success); }
.cmx-feedback.bad { color: var(--cmx-danger); }

.cmx-actions-mid {
    display: flex; justify-content: center;
}

.cmx-actions { display: flex; justify-content: center; margin-top: 16px; }

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

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

@media (max-width: 900px) {
    .cmx-layout { flex-direction: column; padding: 12px; }
    .ad-slot { width: 100%; }
    .ad-placeholder--vertical { width: 100%; height: 90px; }
    .difficulty-grid { grid-template-columns: repeat(2, 1fr); }
    .cmx-header h1 { font-size: 2rem; letter-spacing: 2px; }
    .swatch { height: 110px; }
}