/**
 * Rotelle Zen - Sintetizzatore & Mixer di Suoni Meditativi a Rotella
 * Stile avanzato Console Audio & Rotelle Tattili 3D
 */

:root {
    --zk-bg: #0b0f19;
    --zk-card-bg: rgba(18, 24, 38, 0.85);
    --zk-border: rgba(255, 255, 255, 0.08);
    --zk-text: #f1f5f9;
    --zk-text-muted: #94a3b8;
    --zk-text-dim: #64748b;
    --zk-primary: #38bdf8;
    --zk-gold: #fbbf24;
    --zk-emerald: #34d399;
    --zk-purple: #c084fc;
    --zk-amber: #f97316;
    --zk-danger: #ef4444;
    --zk-knob-size: 88px;
}

[data-theme="light"] {
    --zk-bg: #f8fafc;
    --zk-card-bg: #ffffff;
    --zk-border: rgba(0, 0, 0, 0.08);
    --zk-text: #0f172a;
    --zk-text-muted: #64748b;
    --zk-text-dim: #94a3b8;
}

.zk-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 1rem 3rem;
    font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    color: var(--zk-text);
}

/* Hero Header */
.zk-hero {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1.75rem 2rem;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.85));
    border: 1px solid var(--zk-border);
    border-radius: 20px;
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    margin-bottom: 1.75rem;
}

.zk-hero-content {
    max-width: 820px;
}

.zk-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.3);
    border-radius: 9999px;
    font-size: 0.78rem;
    font-weight: 700;
    color: #38bdf8;
    margin-bottom: 0.75rem;
}

.zk-badge-pulse {
    width: 8px;
    height: 8px;
    background: #38bdf8;
    border-radius: 50%;
    box-shadow: 0 0 10px #38bdf8;
    animation: zkPulse 2s infinite;
}

@keyframes zkPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.25); }
}

.zk-hero-title {
    font-size: 1.95rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin: 0 0 0.5rem;
}

.zk-gradient-text {
    background: linear-gradient(135deg, #38bdf8, #fbbf24, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.zk-hero-desc {
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--zk-text-muted);
    margin: 0;
}

.zk-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.zk-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.2rem;
    font-size: 0.88rem;
    font-weight: 700;
    border-radius: 12px;
    border: 1px solid var(--zk-border);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    background: rgba(30, 41, 59, 0.7);
    color: var(--zk-text);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.zk-action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.zk-btn-danger {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.35);
    color: #fca5a5;
}

.zk-btn-danger:hover {
    background: rgba(239, 68, 68, 0.3);
    color: #fff;
}

.zk-btn-sparkle {
    background: rgba(251, 191, 36, 0.15);
    border-color: rgba(251, 191, 36, 0.35);
    color: #fde047;
}

.zk-btn-sparkle:hover {
    background: rgba(251, 191, 36, 0.3);
    color: #fff;
}

.zk-btn-rec {
    background: rgba(244, 63, 94, 0.15);
    border-color: rgba(244, 63, 94, 0.35);
    color: #fda4af;
}

.zk-btn-rec.is-recording {
    background: #e11d48;
    color: #fff;
    animation: zkRecPulse 1s infinite alternate;
}

@keyframes zkRecPulse {
    from { box-shadow: 0 0 10px rgba(225, 29, 72, 0.5); }
    to { box-shadow: 0 0 25px rgba(225, 29, 72, 0.9); }
}

.zk-rec-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ef4444;
}

/* Monitor & Visualizer */
.zk-monitor-card {
    background: #090d16;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 1.25rem;
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.6), 0 10px 30px rgba(0, 0, 0, 0.4);
    margin-bottom: 1.5rem;
}

.zk-monitor-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.85rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.zk-monitor-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.92rem;
    font-weight: 700;
    color: #cbd5e1;
}

.zk-led-on {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 8px #10b981;
}

.zk-vis-modes {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.zk-vis-mode-btn {
    padding: 0.35rem 0.75rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    color: var(--zk-text-muted);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.zk-vis-mode-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.zk-vis-mode-btn.is-active {
    background: rgba(56, 189, 248, 0.15);
    border-color: rgba(56, 189, 248, 0.4);
    color: #38bdf8;
}

.zk-monitor-stats {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.zk-stat-pill {
    padding: 0.3rem 0.65rem;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    font-size: 0.78rem;
    font-family: 'JetBrains Mono', monospace;
    color: #94a3b8;
}

.zk-canvas-wrapper {
    position: relative;
    width: 100%;
    height: 160px;
    border-radius: 12px;
    overflow: hidden;
    background: radial-gradient(circle at center, #0f172a 0%, #030712 100%);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

#zkVisualizerCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.zk-overlay-prompt {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(3, 7, 18, 0.65);
    backdrop-filter: blur(4px);
    transition: opacity 0.3s ease;
}

.zk-overlay-prompt.is-hidden {
    opacity: 0;
    pointer-events: none;
}

.zk-btn-start-audio {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.6rem;
    background: linear-gradient(135deg, #0284c7, #0369a1);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    border: none;
    border-radius: 9999px;
    cursor: pointer;
    box-shadow: 0 0 25px rgba(2, 132, 199, 0.6);
    transition: all 0.25s ease;
}

.zk-btn-start-audio:hover {
    transform: scale(1.05);
    box-shadow: 0 0 35px rgba(2, 132, 199, 0.85);
}

.zk-start-icon {
    font-size: 1.1rem;
}

/* Presets Bar */
.zk-presets-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--zk-border);
    border-radius: 14px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.zk-presets-label {
    font-size: 0.82rem;
    font-weight: 800;
    color: var(--zk-text-muted);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.zk-presets-scroll {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding: 0.25rem 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.1) transparent;
}

.zk-presets-scroll::-webkit-scrollbar {
    height: 4px;
}

.zk-presets-scroll::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}

.zk-preset-chip {
    padding: 0.45rem 0.9rem;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--zk-text);
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.zk-preset-chip:hover {
    background: rgba(56, 189, 248, 0.15);
    border-color: rgba(56, 189, 248, 0.35);
    color: #38bdf8;
    transform: translateY(-1px);
}

.zk-preset-chip.is-active {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.25), rgba(99, 102, 241, 0.25));
    border-color: #38bdf8;
    color: #fff;
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.4);
}

/* Racks Architecture */
.zk-rack-board {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.zk-rack {
    background: linear-gradient(180deg, rgba(20, 28, 45, 0.85) 0%, rgba(12, 17, 29, 0.95) 100%);
    border: 1px solid var(--zk-border);
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    position: relative;
    overflow: hidden;
}

.zk-rack::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.zk-rack-water::before { background: linear-gradient(90deg, #0284c7, #38bdf8, #06b6d4); }
.zk-rack-nature::before { background: linear-gradient(90deg, #16a34a, #34d399, #10b981); }
.zk-rack-sacred::before { background: linear-gradient(90deg, #d97706, #fbbf24, #f59e0b); }
.zk-rack-cosmic::before { background: linear-gradient(90deg, #7c3aed, #c084fc, #6366f1); }
.zk-rack-master::before { background: linear-gradient(90deg, #ea580c, #f97316, #fb923c); }

.zk-rack-banner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.zk-rack-tag {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.zk-rack-icon {
    font-size: 1.3rem;
}

.zk-rack-name {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: -0.01em;
}

.zk-rack-note {
    font-size: 0.8rem;
    color: var(--zk-text-dim);
    font-style: italic;
}

/* 6-Knob Responsive Grid */
.zk-knobs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.25rem;
}

@media (min-width: 1200px) {
    .zk-knobs-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* The 3D Knob Element */
.zk-knob-cell {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 1.1rem 0.85rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.4);
    user-select: none;
    touch-action: none;
}

.zk-knob-cell:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(20, 30, 50, 0.65);
    transform: translateY(-2px);
}

.zk-knob-cell.is-active {
    border-color: rgba(56, 189, 248, 0.3);
    background: rgba(14, 28, 48, 0.7);
    box-shadow: 0 8px 24px -6px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.zk-knob-header {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.5rem;
    min-height: 42px;
}

.zk-channel-icon {
    font-size: 1.2rem;
}

.zk-channel-title {
    font-size: 0.84rem;
    font-weight: 700;
    line-height: 1.25;
    color: #e2e8f0;
}

/* Knob Centerstage & Rotary Dial */
.zk-dial-stage {
    position: relative;
    width: var(--zk-knob-size);
    height: var(--zk-knob-size);
    margin: 0.35rem 0;
    cursor: grab;
}

.zk-dial-stage:active {
    cursor: grabbing;
}

.zk-gauge-svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.zk-gauge-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.08);
    stroke-width: 7;
    stroke-linecap: round;
}

.zk-gauge-fill {
    fill: none;
    stroke: #38bdf8;
    stroke-width: 7;
    stroke-linecap: round;
    stroke-dasharray: 220;
    stroke-dashoffset: 220;
    transition: stroke-dashoffset 0.08s ease, stroke 0.2s ease;
    filter: drop-shadow(0 0 5px rgba(56, 189, 248, 0.5));
}

/* Category Accent Gauges */
.zk-rack-water .zk-gauge-fill { stroke: #38bdf8; filter: drop-shadow(0 0 6px #38bdf8); }
.zk-rack-nature .zk-gauge-fill { stroke: #34d399; filter: drop-shadow(0 0 6px #34d399); }
.zk-rack-sacred .zk-gauge-fill { stroke: #fbbf24; filter: drop-shadow(0 0 6px #fbbf24); }
.zk-rack-cosmic .zk-gauge-fill { stroke: #c084fc; filter: drop-shadow(0 0 6px #c084fc); }
.zk-rack-master .zk-gauge-fill { stroke: #fb923c; filter: drop-shadow(0 0 6px #fb923c); }

/* The physical rotating disc inside */
.zk-rotator-disc {
    position: absolute;
    inset: 11px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 35%, #334155, #0f172a 70%);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.7), inset 0 2px 3px rgba(255, 255, 255, 0.2), inset 0 -3px 5px rgba(0, 0, 0, 0.8);
    border: 2px solid #1e293b;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: rotate(-135deg); /* -135deg is OFF */
    transition: transform 0.05s ease-out;
}

.zk-indicator-notch {
    position: absolute;
    top: 5px;
    left: 50%;
    width: 3px;
    height: 12px;
    transform: translateX(-50%);
    background: #64748b;
    border-radius: 2px;
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
    transition: background 0.2s ease, box-shadow 0.2s ease;
}

.zk-knob-cell.is-active .zk-indicator-notch {
    background: #ffffff;
    box-shadow: 0 0 8px #ffffff;
}

.zk-disc-center-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: radial-gradient(circle, #475569, #1e293b);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Knob Footer & Controls */
.zk-knob-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    margin-top: 0.4rem;
    width: 100%;
}

.zk-btn-step {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--zk-text-muted);
    font-size: 0.95rem;
    font-weight: 800;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
}

.zk-btn-step:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

.zk-btn-step:active {
    transform: scale(0.92);
}

.zk-value-badge {
    min-width: 58px;
    padding: 0.25rem 0.4rem;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    font-weight: 700;
    color: #ef4444; /* Red OFF state */
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: all 0.2s ease;
}

.zk-value-badge:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.zk-knob-cell.is-active .zk-value-badge {
    color: #38bdf8;
    border-color: rgba(56, 189, 248, 0.35);
    background: rgba(56, 189, 248, 0.08);
    text-shadow: 0 0 6px rgba(56, 189, 248, 0.4);
}

.zk-rack-nature .zk-knob-cell.is-active .zk-value-badge {
    color: #34d399;
    border-color: rgba(52, 211, 153, 0.35);
    background: rgba(52, 211, 153, 0.08);
    text-shadow: 0 0 6px rgba(52, 211, 153, 0.4);
}

.zk-rack-sacred .zk-knob-cell.is-active .zk-value-badge {
    color: #fbbf24;
    border-color: rgba(251, 191, 36, 0.35);
    background: rgba(251, 191, 36, 0.08);
    text-shadow: 0 0 6px rgba(251, 191, 36, 0.4);
}

.zk-rack-cosmic .zk-knob-cell.is-active .zk-value-badge {
    color: #c084fc;
    border-color: rgba(192, 132, 252, 0.35);
    background: rgba(192, 132, 252, 0.08);
    text-shadow: 0 0 6px rgba(192, 132, 252, 0.4);
}

.zk-rack-master .zk-knob-cell.is-active .zk-value-badge {
    color: #fb923c;
    border-color: rgba(251, 146, 60, 0.35);
    background: rgba(251, 146, 60, 0.08);
    text-shadow: 0 0 6px rgba(251, 146, 60, 0.4);
}

/* Educational Guide Section */
.zk-guide-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--zk-border);
}

.zk-guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.zk-guide-card {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--zk-border);
    border-radius: 16px;
    padding: 1.5rem;
}

.zk-guide-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 0.6rem;
    color: #f1f5f9;
}

.zk-guide-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--zk-text-muted);
    margin: 0;
}

/* Responsiveness */
@media (max-width: 768px) {
    .zk-hero {
        padding: 1.25rem;
    }
    .zk-hero-title {
        font-size: 1.45rem;
    }
    .zk-knobs-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.85rem;
    }
    .zk-rack {
        padding: 1rem 0.75rem;
    }
    .zk-canvas-wrapper {
        height: 130px;
    }
}

/* Gong Master Studio (100 Preset & Cadence Slider) */
.zk-gong-studio {
    margin-top: 1.75rem;
    padding: 1.25rem 1.5rem;
    background: linear-gradient(135deg, rgba(30, 27, 18, 0.8) 0%, rgba(18, 24, 38, 0.95) 100%);
    border: 1px solid rgba(251, 191, 36, 0.3);
    border-radius: 16px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(251, 191, 36, 0.2);
}

.zk-gong-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid rgba(251, 191, 36, 0.15);
}

.zk-gong-title-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.zk-gong-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #fbbf24;
    box-shadow: 0 0 10px #fbbf24;
    animation: zkPulse 1.8s infinite;
}

.zk-gong-label {
    font-size: 0.95rem;
    font-weight: 800;
    color: #fbbf24;
    letter-spacing: -0.01em;
}

.zk-gong-rhythm-control {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(0, 0, 0, 0.35);
    padding: 0.35rem 0.85rem;
    border-radius: 10px;
    border: 1px solid rgba(251, 191, 36, 0.2);
}

.zk-rhythm-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: #cbd5e1;
}

.zk-slider-rhythm {
    width: 110px;
    accent-color: #fbbf24;
    cursor: pointer;
}

.zk-rhythm-val {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    font-weight: 800;
    color: #fbbf24;
    min-width: 38px;
}

.zk-gong-advance-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 0, 0, 0.4);
    padding: 0.35rem 0.85rem;
    border-radius: 10px;
    border: 1px solid rgba(251, 191, 36, 0.25);
}

.zk-advance-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: #cbd5e1;
    white-space: nowrap;
}

.zk-advance-select {
    background: #0f172a;
    color: #fef08a;
    border: 1px solid rgba(251, 191, 36, 0.35);
    border-radius: 8px;
    padding: 0.35rem 0.65rem;
    font-size: 0.82rem;
    font-weight: 700;
    outline: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.zk-advance-select:hover {
    border-color: #fbbf24;
    box-shadow: 0 0 10px rgba(251, 191, 36, 0.25);
}

.zk-advance-select option {
    background: #0f172a;
    color: #f1f5f9;
}

.zk-advance-prog {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    font-weight: 800;
    color: #fbbf24;
    background: rgba(251, 191, 36, 0.15);
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    border: 1px solid rgba(251, 191, 36, 0.3);
    min-width: 48px;
    text-align: center;
}

.zk-btn-strike {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1.15rem;
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.25), rgba(217, 119, 6, 0.35));
    border: 1px solid rgba(251, 191, 36, 0.5);
    color: #fef08a;
    border-radius: 12px;
    font-size: 0.88rem;
    cursor: pointer;
    box-shadow: 0 0 15px rgba(251, 191, 36, 0.2);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.zk-btn-strike:hover {
    background: linear-gradient(135deg, #fbbf24, #d97706);
    color: #111827;
    box-shadow: 0 0 25px rgba(251, 191, 36, 0.7);
    transform: scale(1.04);
}

.zk-btn-strike:active,
.zk-btn-strike.is-striking {
    transform: scale(0.96);
    background: linear-gradient(135deg, #f59e0b, #b45309);
    color: #fff;
    box-shadow: 0 0 25px rgba(245, 158, 11, 0.85);
    border-color: #fde047;
}

.zk-gong-slider-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    background: rgba(10, 15, 26, 0.7);
    padding: 1rem 1.25rem;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    margin-bottom: 1rem;
}

.zk-gong-slider-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.zk-btn-step-gong {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(251, 191, 36, 0.12);
    border: 1px solid rgba(251, 191, 36, 0.3);
    color: #fbbf24;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
}

.zk-btn-step-gong:hover {
    background: rgba(251, 191, 36, 0.3);
    color: #fff;
    transform: scale(1.08);
}

.zk-gong-display {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    flex: 1;
    justify-content: center;
    flex-wrap: wrap;
    text-align: center;
}

.zk-gong-idx {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    font-weight: 800;
    color: #fbbf24;
    background: rgba(251, 191, 36, 0.12);
    padding: 0.25rem 0.55rem;
    border-radius: 6px;
    border: 1px solid rgba(251, 191, 36, 0.25);
}

.zk-gong-name {
    font-size: 1.05rem;
    font-weight: 800;
    color: #ffffff;
    text-shadow: 0 0 10px rgba(251, 191, 36, 0.3);
}

.zk-gong-cat {
    font-size: 0.75rem;
    font-weight: 700;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(255, 255, 255, 0.06);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.zk-slider-track-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.zk-gong-slider {
    width: 100%;
    height: 10px;
    border-radius: 5px;
    background: linear-gradient(90deg, #d97706, #fbbf24, #f59e0b);
    accent-color: #fef08a;
    outline: none;
    cursor: pointer;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.6);
}

.zk-gong-scale-marks {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    color: #64748b;
    font-family: 'JetBrains Mono', monospace;
}

.zk-gong-quick-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.zk-gong-cat-pill {
    padding: 0.35rem 0.75rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 9999px;
    color: var(--zk-text-muted);
    font-size: 0.76rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.zk-gong-cat-pill:hover {
    background: rgba(251, 191, 36, 0.15);
    border-color: rgba(251, 191, 36, 0.35);
    color: #fbbf24;
}

.zk-gong-cat-pill.is-active {
    background: rgba(251, 191, 36, 0.25);
    border-color: #fbbf24;
    color: #fff;
    font-weight: 700;
}