/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Base spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-slow),
        color var(--transition-slow);
}

/* Header */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.logo {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.025em;
}

/* Theme Switcher */
.theme-switcher {
    display: flex;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-full);
}

.theme-btn {
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    background-color: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.theme-btn:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.theme-btn.active {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
}

/* GitHub Link */
.github-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.github-link:hover {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--spacing-2xl) var(--spacing-xl);
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* Wheel Section */
.wheel-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.wheel-container {
    position: relative;
    width: 500px;
    height: 500px;
    max-width: 90vw;
    max-height: 90vw;
}

#wheel {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    box-shadow: var(--shadow-wheel);
}

.wheel-pointer {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    border-top: 40px solid var(--accent-primary);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    z-index: 10;
}

/* Spin Button */
.spin-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-2xl);
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow-button);
    transition: all var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.spin-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-button-hover);
}

.spin-button:active:not(:disabled) {
    transform: translateY(0);
}

.spin-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Controls Grid */
.controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

/* Panels */
.panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-panel);
}

.panel-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

/* Sector Editor */
.sector-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: var(--spacing-md);
}

.sector-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.sector-item:hover {
    background-color: var(--bg-hover);
}

.sector-color {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border-color);
}

.sector-input {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-family: inherit;
    color: var(--text-primary);
}

.sector-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background-color: var(--bg-primary);
}

.sector-delete {
    width: 32px;
    height: 32px;
    border: none;
    background-color: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.sector-delete:hover {
    background-color: var(--danger-bg);
    color: var(--danger-text);
}

.add-sector-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.add-sector-btn:hover {
    background-color: var(--bg-hover);
    border-color: var(--accent-primary);
}

/* Timer Controls */
.timer-display {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.timer-value {
    font-size: 3rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--accent-primary);
}

.timer-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.timer-btn {
    width: 48px;
    height: 48px;
    border: none;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.timer-btn:hover {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    transform: scale(1.1);
}

.timer-settings {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.timer-settings label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.timer-settings input {
    width: 80px;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-align: center;
}

/* Result Section */
.result-section {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.result-display {
    margin-bottom: var(--spacing-lg);
}

.result-label {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.result-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    min-height: 3rem;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-full);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.share-btn:hover {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

/* Fullscreen Button */
.fullscreen-btn {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 56px;
    height: 56px;
    border: none;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: var(--shadow-button);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.fullscreen-btn:hover {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    transform: scale(1.1);
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
        justify-content: center;
    }

    .logo {
        order: -1;
        width: 100%;
        text-align: center;
        margin-bottom: var(--spacing-sm);
    }

    .controls-grid {
        grid-template-columns: 1fr;
    }

    .wheel-container {
        width: 350px;
        height: 350px;
    }

    .timer-value {
        font-size: 2rem;
    }

    .result-value {
        font-size: 1.75rem;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}