*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Theme variables */
[data-theme="dark"] {
    --db-bg: #0f0f1e;
    --db-surface: #1a1a2e;
    --db-surface-alt: #16162a;
    --db-border: rgba(255, 255, 255, 0.08);
    --db-text: #e0e0e0;
    --db-text-muted: #8892b0;
    --db-accent: #00b4d8;
    --db-accent-hover: #0096b7;
    --db-shadow: rgba(0, 0, 0, 0.3);
}

[data-theme="light"] {
    --db-bg: #f5f7fa;
    --db-surface: #ffffff;
    --db-surface-alt: #f8f9fa;
    --db-border: #e0e0e0;
    --db-text: #333333;
    --db-text-muted: #666666;
    --db-accent: #1a1a2e;
    --db-accent-hover: #2d2d50;
    --db-shadow: rgba(0, 0, 0, 0.1);
}

html {
    background-color: var(--db-bg);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--db-bg);
    color: var(--db-text);
    line-height: 1.6;
    min-height: 100vh;
}

.dashboard-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--db-border);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.app-logo {
    height: 48px;
    width: auto;
}

.dashboard-header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--db-accent);
}

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

/* Theme toggle */
.theme-toggle {
    background: var(--db-surface);
    border: 1px solid var(--db-border);
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--db-text-muted);
    transition: all 0.2s;
}

.theme-toggle:hover {
    color: var(--db-accent);
    border-color: var(--db-accent);
}

.stats-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--db-surface);
    border-radius: 8px;
    padding: 16px 20px;
    box-shadow: 0 1px 3px var(--db-shadow);
    border: 1px solid var(--db-border);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--db-text-muted);
    font-weight: 500;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--db-accent);
}

.period-selector {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

/* Tabs */
.tabs-container {
    background: var(--db-surface);
    border-radius: 8px;
    box-shadow: 0 1px 3px var(--db-shadow);
    border: 1px solid var(--db-border);
    overflow: hidden;
}

.tabs-header {
    display: flex;
    background: var(--db-surface-alt);
    overflow-x: auto;
    overflow-y: hidden;
}

.tab-btn {
    padding: 12px 24px;
    border: none;
    background: transparent;
    color: var(--db-text-muted);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s;
    white-space: nowrap;
    border-bottom: 3px solid transparent;
}

.tab-btn:hover {
    background: var(--db-border);
    color: var(--db-text);
}

.tab-btn.active {
    color: var(--db-accent);
    border-bottom-color: var(--db-accent);
    background: var(--db-surface);
    font-weight: 600;
}

.tab-content {
    display: none;
    padding: 24px;
}

.tab-content.active {
    display: block;
}

.rule-info-container {
    background: var(--db-surface-alt);
    border-radius: 6px;
    padding: 12px 16px;
    margin-bottom: 16px;
    border: 1px solid var(--db-border);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.rule-info {
    display: flex;
    gap: 8px;
    align-items: center;
}

.info-label {
    font-weight: 600;
    color: var(--db-text-muted);
}

.info-value {
    color: var(--db-text);
}

.no-rules {
    text-align: center;
    padding: 48px;
    color: var(--db-text-muted);
    font-size: 1.1rem;
}

.period-btn {
    padding: 8px 16px;
    border: 1px solid var(--db-border);
    border-radius: 6px;
    background: var(--db-surface);
    color: var(--db-text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
}

.period-btn:hover {
    background: var(--db-surface-alt);
    border-color: var(--db-accent);
}

.period-btn.active {
    background: var(--db-accent);
    color: #fff;
    border-color: var(--db-accent);
}

.chart-container {
    background: var(--db-surface);
    border-radius: 8px;
    padding: 24px;
    position: relative;
    min-height: 400px;
}

.chart-container canvas {
    width: 100% !important;
}

.no-data {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--db-text-muted);
    font-size: 1.1rem;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-report {
    background: #e53e3e;
    color: #fff;
}

.btn-report:hover {
    background: #c53030;
}

.btn-submit {
    background: var(--db-accent);
    color: #fff;
}

.btn-submit:hover {
    background: var(--db-accent-hover);
}

.btn-cancel {
    background: var(--db-surface-alt);
    color: var(--db-text);
    border: 1px solid var(--db-border);
}

.btn-cancel:hover {
    background: var(--db-border);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: var(--db-surface);
    border-radius: 12px;
    padding: 32px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--db-border);
}

.modal-content h2 {
    margin-bottom: 20px;
    color: var(--db-accent);
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--db-text-muted);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--db-border);
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s;
    background: var(--db-bg);
    color: var(--db-text);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--db-accent);
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.form-message {
    margin-top: 12px;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
}

.form-message.success {
    background: #f0fff4;
    color: #276749;
    border: 1px solid #c6f6d5;
}

.form-message.error {
    background: #fff5f5;
    color: #9b2c2c;
    border: 1px solid #feb2b2;
}

/* Footer */
.site-footer {
    margin-top: 48px;
    padding: 24px;
    background: var(--db-surface-alt);
    border-top: 1px solid var(--db-border);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--db-text-muted);
    font-size: 0.9rem;
    transition: color 0.2s;
}

.footer-brand:hover {
    color: var(--db-accent);
}

.footer-logo {
    height: 24px;
    width: auto;
}

.footer-copyright {
    color: var(--db-text-muted);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-container {
        padding: 16px;
    }

    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .dashboard-header h1 {
        font-size: 1.4rem;
    }

    .period-selector {
        flex-wrap: wrap;
    }

    .stats-bar {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}