/* ============================================================
   ZigZag — Neon Rush Theme  #F43F5E
   ============================================================ */

:root {
    --zz-accent: #F43F5E;
    --zz-accent-bright: #FF6B84;
    --zz-accent-dim: rgba(244, 63, 94, 0.25);
    --zz-accent-glow: rgba(244, 63, 94, 0.5);
    --zz-diamond: #FFD700;
    --zz-diamond-glow: rgba(255, 215, 0, 0.6);
    --zz-bg: #07040a;
    --zz-bg-surface: #0e0810;
    --zz-card: rgba(255, 255, 255, 0.03);
    --zz-card-border: rgba(244, 63, 94, 0.15);
    --zz-text: #f0eef5;
    --zz-text-dim: rgba(240, 238, 245, 0.5);
    --zz-radius: 16px;
    --zz-transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Layout ── */
.zz-layout {
    display: grid;
    grid-template-columns: 160px 1fr 160px;
    gap: 1.5rem;
    align-items: start;
    padding: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

#zz-app {
    width: 100%;
    min-height: 600px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Ad slots */
.ad-slot--top,
.ad-slot--bottom {
    display: none;
}

/* ── Screens ── */
.zz-screen {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: center;
    animation: zz-fadeIn 0.3s ease;
}
.zz-screen.active {
    display: flex;
}
@keyframes zz-fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Menu Screen ── */
.zz-header {
    text-align: center;
    margin: 2rem 0 1.5rem;
}

.zz-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 0.4rem;
}

.zz-logo__icon {
    font-size: 2rem;
    color: var(--zz-accent);
    filter: drop-shadow(0 0 10px var(--zz-accent-glow));
    animation: zz-pulse 2s ease-in-out infinite;
}

@keyframes zz-pulse {
    0%, 100% { filter: drop-shadow(0 0 8px var(--zz-accent-glow)); }
    50% { filter: drop-shadow(0 0 20px var(--zz-accent-glow)) drop-shadow(0 0 40px var(--zz-accent-dim)); }
}

.zz-logo h1 {
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: 6px;
    color: var(--zz-text);
    text-shadow: 0 0 30px var(--zz-accent-glow), 0 0 60px var(--zz-accent-dim);
    line-height: 1;
}

.zz-subtitle {
    color: var(--zz-text-dim);
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ── Card ── */
.zz-card {
    background: var(--zz-card);
    border: 1px solid var(--zz-card-border);
    border-radius: var(--zz-radius);
    padding: 1.25rem 1.5rem;
    width: 100%;
    max-width: 420px;
    margin-bottom: 1rem;
    backdrop-filter: blur(12px);
}

.zz-card__title {
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--zz-accent);
    margin-bottom: 0.75rem;
}

/* ── How To Play ── */
.zz-howto {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.zz-howto li {
    font-size: 0.88rem;
    color: var(--zz-text-dim);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.zz-howto__key {
    background: rgba(244, 63, 94, 0.1);
    border: 1px solid var(--zz-card-border);
    border-radius: 6px;
    padding: 0.15rem 0.5rem;
    font-family: var(--font-mono, monospace);
    font-size: 0.8rem;
    color: var(--zz-accent-bright);
    white-space: nowrap;
}
.zz-howto__diamond {
    color: var(--zz-diamond);
    font-size: 1rem;
}
.zz-howto li strong {
    color: var(--zz-text);
    font-weight: 600;
}

/* ── Best Score ── */
.zz-best-score {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(244, 63, 94, 0.06);
    border: 1px solid var(--zz-card-border);
    border-radius: 50px;
    padding: 0.5rem 1.25rem;
    margin-bottom: 1rem;
}
.zz-best-score__label {
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: 0.65rem;
    letter-spacing: 3px;
    color: var(--zz-accent);
    font-weight: 700;
}
.zz-best-score__value {
    font-family: var(--font-mono, monospace);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--zz-text);
}

/* ── Menu Actions ── */
.zz-menu-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
    width: 100%;
    max-width: 320px;
    padding-bottom: 2rem;
}

/* ── Buttons ── */
.zz-btn {
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    border: none;
    border-radius: 12px;
    padding: 0.65rem 1.5rem;
    cursor: pointer;
    transition: all var(--zz-transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
}

.zz-btn--primary {
    background: var(--zz-accent);
    color: #fff;
    box-shadow: 0 0 20px var(--zz-accent-dim), 0 4px 12px rgba(0,0,0,0.3);
}
.zz-btn--primary:hover {
    background: var(--zz-accent-bright);
    box-shadow: 0 0 30px var(--zz-accent-glow), 0 6px 16px rgba(0,0,0,0.4);
    transform: translateY(-1px);
}
.zz-btn--primary:active { transform: translateY(0); }

.zz-btn--secondary {
    background: rgba(244, 63, 94, 0.12);
    color: var(--zz-accent-bright);
    border: 1px solid var(--zz-card-border);
}
.zz-btn--secondary:hover {
    background: rgba(244, 63, 94, 0.2);
    border-color: var(--zz-accent);
}

.zz-btn--outline {
    background: transparent;
    color: var(--zz-text-dim);
    border: 1px solid rgba(255,255,255,0.1);
}
.zz-btn--outline:hover {
    color: var(--zz-text);
    border-color: rgba(255,255,255,0.25);
}

.zz-btn--ghost {
    background: transparent;
    color: var(--zz-text-dim);
    border: none;
    font-size: 0.8rem;
}
.zz-btn--ghost:hover { color: var(--zz-text); }

.zz-btn--lg {
    padding: 0.9rem 2rem;
    font-size: 1rem;
    letter-spacing: 3px;
}

/* ── Game Screen ── */
#game-screen {
    position: relative;
    width: 100%;
    align-items: center;
}

.zz-hud {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 480px;
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
}

.zz-hud > div {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
}

.zz-hud__label {
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: 0.6rem;
    letter-spacing: 3px;
    color: var(--zz-text-dim);
    font-weight: 700;
}

.zz-hud__value {
    font-family: var(--font-mono, monospace);
    font-size: 2rem;
    font-weight: 700;
    color: var(--zz-text);
    line-height: 1;
    transition: transform 0.1s ease;
}

.zz-hud__value.bump {
    transform: scale(1.15);
    color: var(--zz-accent-bright);
}

#zz-canvas {
    display: block;
    border-radius: 16px;
    background: var(--zz-bg);
    border: 1px solid var(--zz-card-border);
    box-shadow: 0 0 40px rgba(244, 63, 94, 0.08), 0 8px 32px rgba(0,0,0,0.5);
    cursor: pointer;
    touch-action: none;
}

.zz-tap-hint {
    margin-top: 0.75rem;
    font-size: 0.8rem;
    color: var(--zz-text-dim);
    letter-spacing: 1px;
    animation: zz-hint-fade 2s ease-in-out infinite;
}

@keyframes zz-hint-fade {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

.zz-tap-hint.hidden { display: none; }

/* ── Game Over Screen ── */
.zz-result-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    width: 100%;
    max-width: 380px;
    padding: 2rem 1.5rem;
    background: var(--zz-card);
    border: 1px solid var(--zz-card-border);
    border-radius: 20px;
    backdrop-filter: blur(20px);
    margin: 1.5rem 0;
}

.zz-result__icon {
    font-size: 2.5rem;
    animation: zz-shake 0.5s ease;
}

@keyframes zz-shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px) rotate(-3deg); }
    40% { transform: translateX(6px) rotate(3deg); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

.zz-result__title {
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: 1.6rem;
    font-weight: 900;
    letter-spacing: 4px;
    color: var(--zz-accent);
    text-shadow: 0 0 20px var(--zz-accent-glow);
}

.zz-result__score-wrap {
    text-align: center;
}

.zz-result__label {
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: 0.65rem;
    letter-spacing: 3px;
    color: var(--zz-text-dim);
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.zz-result__score {
    font-family: var(--font-mono, monospace);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--zz-text);
    line-height: 1;
}

.zz-result__newbest {
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: 0.75rem;
    letter-spacing: 3px;
    color: var(--zz-diamond);
    text-shadow: 0 0 10px var(--zz-diamond-glow);
    font-weight: 700;
    animation: zz-glow-pulse 1s ease-in-out infinite;
}

@keyframes zz-glow-pulse {
    0%, 100% { text-shadow: 0 0 10px var(--zz-diamond-glow); }
    50% { text-shadow: 0 0 20px var(--zz-diamond-glow), 0 0 40px rgba(255, 215, 0, 0.3); }
}

.zz-result__input-wrap {
    display: flex;
    gap: 0.5rem;
    width: 100%;
}

.zz-input {
    flex: 1;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    padding: 0.6rem 0.9rem;
    color: var(--zz-text);
    font-family: var(--font-body, sans-serif);
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--zz-transition);
    width: 100%;
}
.zz-input:focus {
    border-color: var(--zz-accent);
    box-shadow: 0 0 0 3px var(--zz-accent-dim);
}
.zz-input::placeholder { color: rgba(240, 238, 245, 0.3); }

.zz-result__input-wrap .zz-btn {
    width: auto;
    flex-shrink: 0;
    padding: 0.6rem 1rem;
    font-size: 0.75rem;
    letter-spacing: 1px;
}

.zz-result__actions {
    display: flex;
    gap: 0.5rem;
    width: 100%;
}
.zz-result__actions .zz-btn {
    flex: 1;
}

/* ── Leaderboard Screen ── */
.zz-lb-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
    width: 100%;
    max-width: 420px;
    padding: 2rem 1.5rem;
    background: var(--zz-card);
    border: 1px solid var(--zz-card-border);
    border-radius: 20px;
    backdrop-filter: blur(20px);
    margin: 1.5rem 0;
}

.zz-lb-title {
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: 1.4rem;
    font-weight: 900;
    letter-spacing: 5px;
    color: var(--zz-text);
}

.zz-lb-list {
    list-style: none;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.zz-lb-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.9rem;
    border-radius: 10px;
    background: rgba(255,255,255,0.025);
    border: 1px solid rgba(255,255,255,0.04);
    transition: background var(--zz-transition);
}
.zz-lb-list li:hover { background: rgba(255,255,255,0.045); }

.zz-lb-list li:nth-child(1) { border-color: rgba(255, 215, 0, 0.3); }
.zz-lb-list li:nth-child(2) { border-color: rgba(192, 192, 192, 0.25); }
.zz-lb-list li:nth-child(3) { border-color: rgba(205, 127, 50, 0.25); }

.zz-lb__rank {
    font-family: var(--font-mono, monospace);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--zz-text-dim);
    min-width: 24px;
    text-align: center;
}
.zz-lb-list li:nth-child(1) .zz-lb__rank { color: #FFD700; }
.zz-lb-list li:nth-child(2) .zz-lb__rank { color: #C0C0C0; }
.zz-lb-list li:nth-child(3) .zz-lb__rank { color: #CD7F32; }

.zz-lb__name {
    flex: 1;
    font-size: 0.9rem;
    color: var(--zz-text);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.zz-lb__score {
    font-family: var(--font-mono, monospace);
    font-size: 1rem;
    font-weight: 700;
    color: var(--zz-accent-bright);
}

.zz-lb-empty {
    color: var(--zz-text-dim);
    font-size: 0.85rem;
    text-align: center;
    padding: 2rem;
}

/* ── Save feedback ── */
.zz-save-msg {
    font-size: 0.8rem;
    color: #4ade80;
    text-align: center;
    min-height: 1.2rem;
}
.zz-save-msg.error { color: var(--zz-accent); }

/* ── Mobile ── */
@media (max-width: 900px) {
    .zz-layout {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    .ad-slot--left,
    .ad-slot--right {
        display: none;
    }
    .ad-slot--top,
    .ad-slot--bottom {
        display: block;
    }
    #zz-canvas {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .zz-logo h1 {
        font-size: 2.2rem;
    }
    .zz-result__score {
        font-size: 2.8rem;
    }
    .zz-hud__value {
        font-size: 1.5rem;
    }
}