:root {
    /* Default Dark Theme Colors */
    --color-primary: #ff5722; /* Hazard Orange */
    --color-primary-rgb: 255, 87, 34; /* For rgba() functions */
    --color-bg-main: #0a0e12;
    --color-plate: #0d1217;
    --color-track: #1a232c;
    --color-text: #ffffff;
    --color-header-bg: #141a22;
    --color-header-border: #232d3a;
    --transition-speed: 0.2s;
}

[data-theme="light"] {
    /* Light Theme Colors */
    --color-primary: #ff5722; /* Hazard Orange */
    --color-primary-rgb: 255, 87, 34;
    --color-bg-main: #f5f5f5;
    --color-plate: #ffffff;
    --color-track: #e0e0e0;
    --color-text: #1a1a1a;
    --color-header-bg: #ffffff;
    --color-header-border: #e0e0e0;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--color-bg-main);
    color: var(--color-text);
    display: flex;
    flex-direction: column;
    height: 100vh;
    margin: 0;
    font-family: "Inter", sans-serif;
    overflow: hidden;
    -webkit-tap-highlight-color: transparent;
    transition:
        background-color var(--transition-speed),
        color var(--transition-speed);
}

/* --- Header --- */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background-color: var(--color-header-bg);
    border-bottom: 1px solid var(--color-header-border);
    flex-shrink: 0;
    transition:
        background-color var(--transition-speed),
        border-color var(--transition-speed);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: #000;
    font-size: 14px;
}

.app-title {
    font-size: 20px;
    font-weight: 900;
    margin: 0;
    letter-spacing: -0.5px;
}

.header-actions {
    display: flex;
    align-items: center;
}

.theme-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 24px;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    transition: transform 0.2s ease;
}

.theme-toggle-btn:active {
    transform: scale(0.9);
}

/* --- Main Content Area --- */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

/* --- 1. Top Toggle Buttons --- */
.toggle-container {
    display: flex;
    background: var(--color-track);
    border-radius: 30px;
    padding: 4px;
    margin-bottom: 40px;
}

.toggle-btn {
    background: transparent;
    color: #888;
    border: none;
    padding: 10px 24px;
    border-radius: 26px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
}

.toggle-btn.active {
    background: var(--color-primary);
    color: #000;
}

/* --- 2. Radial Selector Layout --- */
.selector-container {
    position: relative;
    width: 100%;
    max-width: 380px;
    aspect-ratio: 1 / 1;
    user-select: none;
    touch-action: none; /* Prevents mobile scroll */
    margin: 0 auto;
}

svg {
    width: 100%;
    height: 100%;
    overflow: visible;
    transform: rotate(-90deg); /* Sets 0 degrees to top center */
}

/* --- 3. Background Layers --- */
.inner-plate {
    fill: var(--color-plate);
    transform-origin: 100px 100px;
    transition: transform 0.05s ease-out; /* Fast snap back */
}

.inner-plate.pulse {
    transform: scale(1.05); /* Audio peak visual effect */
    fill: rgba(var(--color-primary-rgb), 0.5); /* Make pulse more visible */
    transition:
        transform 0.1s ease-out,
        fill 0.15s ease-out;
}

.track-ring {
    fill: none;
    stroke: var(--color-track);
    stroke-width: 4;
}

.track-dot {
    fill: var(--color-track);
    transition: fill 0.2s;
}
.track-dot.active {
    fill: var(--color-primary);
}

/* --- 4. Interactive Progress Elements --- */
#progress-arc {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 4;
    stroke-linecap: round;
    filter: drop-shadow(0 0 5px rgba(var(--color-primary-rgb), 0.4));
    transition: stroke-dashoffset var(--transition-speed)
        cubic-bezier(0.4, 0, 0.2, 1);
}

#thumb-group {
    cursor: pointer;
    transform-origin: 100px 100px;
    transition: transform var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
}
#thumb-main {
    fill: var(--color-primary);
    filter: drop-shadow(0 0 5px rgba(var(--color-primary-rgb), 0.5));
}

/* The Glitch Fix: Kill transitions while finger is dragging */
.dragging #progress-arc,
.dragging #thumb-group {
    transition: none !important;
}

/* --- 5. Center UI Overlay --- */
.center-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    pointer-events: none; /* Let drag clicks pass through to SVG */
    width: 100%;
}

.play-btn {
    background: none;
    border: none;
    cursor: pointer;
    pointer-events: auto; /* Re-enable click for play button */
    padding: 10px;
    margin-bottom: -5px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.play-icon {
    color: var(--color-text);
    font-size: 28px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.1s;
    user-select: none;
}
.play-btn:active .play-icon {
    transform: scale(0.9);
}

.tempo-label {
    color: var(--color-text);
    font-size: 64px;
    font-weight: 900;
    font-style: italic;
    letter-spacing: -3px;
    line-height: 1.1;
    margin: 0;
}

.sequence-text {
    color: var(--color-primary);
    font-size: 16px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 2px;
    height: 20px;
    margin-top: 5px;
    opacity: 0.8;
}