:root {
    --bg-color: #121212;
    --text-color: #ffffff;
    --accent-color: #00ffcc;
    /* Neon Teal */
    --secondary-color: #ff00ff;
    /* Neon Magenta */
    --track-color: #333333;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --warning-color: #ffcc00;
    /* Neon Yellow for warning */
    --victory-color: #FFD700;
    /* Gold */
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
    touch-action: manipulation;
    transition: background-color 0.5s;
}

body.victory {
    animation: victory-pulse 2s infinite;
}

@keyframes victory-pulse {
    0% {
        background-color: var(--bg-color);
        box-shadow: inset 0 0 0px 0px var(--victory-color);
    }

    50% {
        background-color: #1a1a00;
        box-shadow: inset 0 0 100px 20px rgba(255, 215, 0, 0.2);
    }

    100% {
        background-color: var(--bg-color);
        box-shadow: inset 0 0 0px 0px var(--victory-color);
    }
}

.container {
    position: relative;
    width: 80vmin;
    height: 80vmin;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Trophy Overlay */
#trophy-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    font-size: 20vmin;
    opacity: 0;
    pointer-events: none;
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 5;
}

#trophy-overlay.show {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

/* SVG Rings */
svg {
    transform: rotate(-90deg);
    width: 100%;
    height: 100%;
    pointer-events: none;
}

circle {
    fill: none;
    stroke-linecap: round;
}

.ring-bg {
    stroke: var(--track-color);
}

.ring-fg {
    transition: stroke-dashoffset 0.1s linear;
}

#interval-ring-fg {
    stroke: var(--accent-color);
}

#total-ring-fg {
    stroke: var(--secondary-color);
}

/* Center Info */
.info {
    position: absolute;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 50%;
    height: 50%;
}

.timer-text {
    font-size: 8vmin;
    font-weight: bold;
    font-variant-numeric: tabular-nums;
    margin: 0;
}

.sub-text {
    font-size: 3vmin;
    color: #aaa;
    margin-top: 1vmin;
}

.controls {
    position: absolute;
    bottom: 5vmin;
    display: flex;
    gap: 20px;
    z-index: 10;
}

button {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 10px 20px;
    font-size: 1rem;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    backdrop-filter: blur(5px);
}

button:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

button.primary {
    background: var(--accent-color);
    color: black;
    border: none;
    font-weight: bold;
}

button.primary:hover {
    opacity: 0.9;
    background: var(--accent-color);
}

/* Settings Panel */
#settings-panel {
    position: fixed;
    bottom: 15vmin;
    /* Above controls */
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid #333;
    border-radius: 15px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 20;
    backdrop-filter: blur(10px);
    width: 80vmin;
    max-width: 300px;
    transition: opacity 0.3s, transform 0.3s;
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

#settings-panel.visible {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.setting-group label {
    font-size: 0.9rem;
    color: #ccc;
}

select {
    background: #222;
    color: white;
    border: 1px solid #444;
    padding: 8px;
    border-radius: 5px;
    font-size: 1rem;
    outline: none;
}

/* Settings Toggle */
#settings-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: #666;
    font-size: 1.5rem;
    padding: 10px;
    cursor: pointer;
    z-index: 100;
}

#settings-toggle:hover {
    color: white;
    background: none;
    transform: rotate(90deg);
}

/* Initialization Overlay */
#init-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#init-overlay h1 {
    margin-bottom: 2rem;
    font-size: 2rem;
    text-align: center;
}