:root {
    --color-primary: #007AFF;
    --color-primary-dark: #0056CC;
    --color-success: #34C759;
    --color-danger: #FF3B30;
    --color-warning: #FF9500;
    --color-bg: #F5F7FA;
    --color-surface: #FFFFFF;
    --color-text-primary: #1D1D1F;
    --color-text-secondary: #86868B;
    --color-border: #E5E5EA;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

body {
    background: var(--color-bg);
    color: var(--color-text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
}

body.dark-mode {
    --color-bg: #000000;
    --color-surface: #1C1C1E;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #98989D;
    --color-border: #38383A;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.6);
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 20px 0;
    box-shadow: var(--shadow-sm);
}

.header-content {
    padding: 0 20px;
}

.logo {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.event-title {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.control-btn {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.control-btn:hover {
    background: var(--color-bg);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-1px);
}

.app-main {
    flex: 1;
    padding: 40px 0;
}

.main-grid {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    gap: 24px;
    padding: 0 20px;
}

.panel {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.panel-title {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.3px;
    color: var(--color-text-primary);
}

.form-control {
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    padding: 12px 16px;
    background: var(--color-surface);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.form-control:focus {
    background: var(--color-surface);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
}

.btn {
    border-radius: var(--radius-md);
    padding: 12px 24px;
    font-weight: 600;
    letter-spacing: -0.3px;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.stat-item {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
}

.stat-label {
    font-size: 13px;
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary);
}

.main-stage {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.stage-panel {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}

.slot-display {
    padding: 40px 0;
}

.slot-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.slot-number {
    font-size: 120px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -4px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.08s cubic-bezier(0.4, 0, 0.2, 1);
}

.slot-name {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
    letter-spacing: -1px;
    transition: all 0.08s cubic-bezier(0.4, 0, 0.2, 1);
}

.stage-btn {
    padding: 16px 40px;
    font-size: 18px;
    border-radius: var(--radius-md);
    font-weight: 700;
    letter-spacing: -0.3px;
}

.btn-start {
    background: linear-gradient(135deg, var(--color-success), #28A745);
    border: none;
}

.btn-start:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 24px rgba(52, 199, 89, 0.4);
}

.btn-stop {
    background: linear-gradient(135deg, var(--color-danger), #E60000);
    border: none;
}

.btn-stop:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 24px rgba(255, 59, 48, 0.4);
}

.winners-panel {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.winners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.winner-card {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.08), rgba(0, 122, 255, 0.02));
    border: 1px solid rgba(0, 122, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    animation: winnerEnter 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes winnerEnter {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.winner-rank {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.winner-number {
    font-size: 56px;
    font-weight: 800;
    line-height: 1;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.winner-name {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.winner-prize {
    font-size: 16px;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.winner-time {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.winners-table-container {
    max-height: 600px;
    overflow-y: auto;
}

.table {
    color: var(--color-text-primary);
    margin-bottom: 0;
}

.table thead th {
    border-bottom: 2px solid var(--color-border);
    color: var(--color-text-secondary);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table tbody td {
    border-bottom: 1px solid var(--color-border);
    padding: 12px 8px;
    font-size: 14px;
}

.app-footer {
    padding: 24px 0;
    color: var(--color-text-secondary);
}

.modal-content {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.form-label {
    color: var(--color-text-secondary);
}

@media (max-width: 1200px) {
    .main-grid {
        grid-template-columns: 1fr;
    }

    .sidebar-left,
    .sidebar-right {
        order: 2;
    }

    .main-stage {
        order: 1;
    }
}

@media (max-width: 768px) {
    .slot-number {
        font-size: 72px;
    }

    .slot-name {
        font-size: 32px;
    }

    .stage-panel {
        padding: 40px 20px;
    }
}