/* ===== CSS Variables ===== */
:root {
    --color-bg-start: #1a1a2e;
    --color-bg-mid: #16213e;
    --color-bg-end: #0f3460;
    --color-rock: #e94560;
    --color-rock-light: #ff6b6b;
    --color-triple: #00d9ff;
    --color-triple-light: #00ff88;
    --color-swing: #ffd700;
    --color-swing-light: #ffaa00;
    --color-text: #fff;
    --color-text-muted: #a0a0a0;
    --color-glass: rgba(255, 255, 255, 0.05);
    --color-glass-border: rgba(255, 255, 255, 0.1);
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--color-bg-start), var(--color-bg-mid), var(--color-bg-end));
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    padding: 10px;
}

/* ===== Typography ===== */
h1 {
    font-size: 1.8rem;
    margin-bottom: 5px;
    background: linear-gradient(90deg, var(--color-rock), var(--color-rock-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--color-text-muted);
    margin-bottom: 15px;
    font-size: 0.9rem;
}

/* ===== Pattern Selector ===== */
.pattern-selector {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.pattern-btn {
    padding: 8px 20px;
    background: var(--color-glass);
    border: 2px solid var(--color-glass-border);
    border-radius: 20px;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.pattern-btn:hover {
    border-color: var(--color-rock);
    color: var(--color-text);
}

.pattern-btn.active {
    background: linear-gradient(135deg, var(--color-rock), var(--color-rock-light));
    border-color: var(--color-rock-light);
    color: var(--color-text);
    box-shadow: 0 0 15px rgba(233, 69, 96, 0.4);
}

.step-label {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: 15px;
    min-height: 30px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ===== Beat Display ===== */
.beat-container {
    display: flex;
    gap: 12px;
    margin-bottom: 15px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.beat-group {
    display: flex;
    gap: 4px;
    padding: 8px 12px;
    border-radius: 25px;
    background: var(--color-glass);
    border: 1px solid var(--color-glass-border);
}

.beat-group--rock {
    border-color: rgba(233, 69, 96, 0.3);
}

.beat-group--triple {
    border-color: rgba(0, 217, 255, 0.3);
}

.beat {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: bold;
    transition: all 0.1s ease;
    color: var(--color-text-muted);
}

.beat--and {
    width: 28px;
    height: 28px;
    font-size: 0.9rem;
    opacity: 0.7;
}

.beat.active {
    transform: scale(1.2);
    color: var(--color-text);
}

.beat--rock.active {
    background: linear-gradient(135deg, var(--color-rock), var(--color-rock-light));
    box-shadow: 0 0 15px rgba(233, 69, 96, 0.6);
}

.beat--triple.active {
    background: linear-gradient(135deg, var(--color-triple), var(--color-triple-light));
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.6);
}

/* ===== Current Count ===== */
.current-count {
    font-size: 5rem;
    font-weight: bold;
    margin-bottom: 5px;
    min-height: 80px;
    min-width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #fff, #e0e0e0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.current-count.running {
    animation: pulse 0.1s ease-out;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

/* ===== Controls Layout ===== */
.controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    width: 100%;
    max-width: 500px;
}

.controls-row {
    display: flex;
    gap: 20px;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Control Panel ===== */
.control-panel {
    flex: 1;
    min-width: 200px;
    max-width: 240px;
    text-align: center;
    padding: 12px;
    background: var(--color-glass);
    border-radius: 12px;
    border: 1px solid var(--color-glass-border);
}

.control-panel__label {
    font-size: 0.85rem;
    margin-bottom: 5px;
    color: var(--color-text-muted);
}

.control-panel__value {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 8px;
}

.control-panel__value--bpm {
    color: var(--color-rock);
}

.control-panel__value--swing {
    color: var(--color-swing);
    font-size: 1.5rem;
    margin-bottom: 0;
}

.control-panel__desc {
    font-size: 0.7rem;
    color: #888;
    margin-bottom: 8px;
    font-style: italic;
}

/* ===== Sliders ===== */
.slider {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--color-glass-border);
    border-radius: 3px;
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    cursor: pointer;
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.slider--bpm::-webkit-slider-thumb {
    background: linear-gradient(135deg, var(--color-rock), var(--color-rock-light));
    box-shadow: 0 0 10px rgba(233, 69, 96, 0.5);
}

.slider--bpm::-moz-range-thumb {
    background: linear-gradient(135deg, var(--color-rock), var(--color-rock-light));
    box-shadow: 0 0 10px rgba(233, 69, 96, 0.5);
}

.slider--swing::-webkit-slider-thumb {
    background: linear-gradient(135deg, var(--color-swing), var(--color-swing-light));
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.slider--swing::-moz-range-thumb {
    background: linear-gradient(135deg, var(--color-swing), var(--color-swing-light));
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

/* ===== Preset Buttons ===== */
.presets {
    display: flex;
    gap: 5px;
    margin-top: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.preset-btn {
    padding: 5px 10px;
    background: var(--color-glass);
    border: 1px solid var(--color-glass-border);
    border-radius: 15px;
    color: var(--color-text);
    cursor: pointer;
    font-size: 0.7rem;
    transition: all 0.2s ease;
}

.preset-btn:hover {
    background: rgba(233, 69, 96, 0.3);
    border-color: var(--color-rock);
}

.preset-btn--swing {
    color: var(--color-swing);
    border-color: rgba(255, 215, 0, 0.3);
    background: rgba(255, 215, 0, 0.1);
}

.preset-btn--swing:hover {
    background: rgba(255, 215, 0, 0.3);
    border-color: var(--color-swing);
}

/* ===== Start/Stop Button ===== */
.btn-start {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: none;
    font-size: 0.9rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, var(--color-rock), var(--color-rock-light));
    color: var(--color-text);
    box-shadow: 0 5px 20px rgba(233, 69, 96, 0.4);
}

.btn-start:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(233, 69, 96, 0.6);
}

.btn-start.running {
    background: linear-gradient(135deg, var(--color-triple), var(--color-triple-light));
    box-shadow: 0 5px 20px rgba(0, 255, 136, 0.4);
}

/* ===== Toggle Options ===== */
.options {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    cursor: pointer;
}

.toggle input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    .beat-group {
        padding: 6px 8px;
        gap: 3px;
    }

    .beat {
        width: 30px;
        height: 30px;
        font-size: 0.95rem;
    }

    .beat--and {
        width: 22px;
        height: 22px;
        font-size: 0.8rem;
    }

    .current-count {
        font-size: 4rem;
        min-height: 70px;
    }

    .control-panel {
        min-width: 160px;
        padding: 10px;
    }

    .control-panel__value {
        font-size: 1.6rem;
    }

    .btn-start {
        width: 70px;
        height: 70px;
        font-size: 0.8rem;
    }
}

/* ===== Touch Devices ===== */
@media (hover: none) and (pointer: coarse) {
    .preset-btn {
        min-height: 44px;
        padding: 8px 12px;
    }

    .slider {
        height: 12px;
    }

    .slider::-webkit-slider-thumb {
        width: 28px;
        height: 28px;
    }

    .btn-start:hover {
        transform: none;
    }

    .btn-start:active {
        transform: scale(0.95);
    }
}

/* ===== Timeline Track ===== */
.timeline-track {
    width: 100%;
    max-width: 600px;
    height: 60px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    position: relative;
    margin-bottom: 20px;
    overflow: hidden;
}

.timeline-cursor {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #fff;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
    z-index: 10;
    left: 0;
    will-change: transform;
}

.timeline-markers {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.timeline-marker {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: rgba(255, 255, 255, 0.3);
    /* Center the 1px line exactly on the percentage point */
    transform: translateX(-50%);
}

.timeline-marker.strong {
    background: rgba(255, 255, 255, 0.6);
    width: 2px;
}

/* Removed timeline-label styles */