:root {
    --bg-dark: #121212;
    --bg-container: #1e1e1e;
    --bg-control: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent: #4a4a4a;
    --accent-hover: #5a5a5a;
    --slider-track: #404040;
    --slider-thumb: #686868;
}

body {
    font-family: 'Inter', Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: var(--bg-dark);
    color: var(--text-primary);
}

.container {
    background-color: var(--bg-container);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

h1 {
    margin-top: 0;
    color: var(--text-primary);
    font-size: 24px;
    font-weight: 500;
    margin-bottom: 10px;
    text-align: center; 
}

.tagline {
    display: block;
    color: var(--text-secondary);
    font-size: 14px;
    font-style: italic;
    margin-bottom: 30px;
    text-align: center;
}

.controls {
    display: grid;
    gap: 30px;
}

.control-group {
    display: grid;
    gap: 20px;
    padding: 20px;
    background-color: var(--bg-control);
    border-radius: 10px;
}

.button-group {
    display: flex;
    gap: 15px;
    align-items: center;
}

button {
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    background-color: var(--accent);
    color: var(--text-primary);
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    font-size: 16px;
}

button:hover {
    background-color: var(--accent-hover);
}

button:active {
    transform: scale(0.98);
}

button.stop {
    background-color: #3d2d2d;
}

button.stop:hover {
    background-color: #4d3d3d;
}

.timer {
    padding: 12px 25px;
    background-color: var(--bg-control);
    border-radius: 8px;
    font-size: 18px;
    font-family: monospace;
    color: var(--text-primary);
    min-width: 120px;
    text-align: center;
}

.slider-container {
    display: grid;
    gap: 8px;
}

.slider-container label {
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 14px;
}

.slider-value {
    color: var(--text-primary);
    font-weight: 500;
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: var(--slider-track);
    border-radius: 3px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--slider-thumb);
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--accent-hover);
}

select {
    padding: 10px;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    border: 1px solid var(--accent);
    border-radius: 6px;
    outline: none;
    cursor: pointer;
}

select:focus {
    border-color: var(--accent-hover);
}

option {
    background-color: var(--bg-dark);
    color: var(--text-primary);
}

/* Toggle switch styles */
.toggle-container {
    margin-top: 10px;
}

.toggle-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 14px;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
    background-color: var(--slider-track);
    border-radius: 12px;
    transition: background-color 0.2s;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--slider-thumb);
    top: 2px;
    left: 2px;
    transition: transform 0.2s;
}

input[type="checkbox"] {
    display: none;
}

input[type="checkbox"]:checked + .toggle-switch {
    background-color: var(--accent);
}

input[type="checkbox"]:checked + .toggle-switch::after {
    transform: translateX(24px);
}