/* Component styles */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.date-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.date-selector {
    display: flex;
    gap: 0.5rem;
}

.date-selector select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-primary);
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    outline: none;
}

.date-selector select:focus {
    border-color: var(--accent);
}

.sidebar h1 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.sidebar nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar button {
    text-align: left;
    padding: 0.75rem 1rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.sidebar .expand-button svg {
    width: 20px;
    height: 20px;
}

.sidebar button.active,
.sidebar button:hover {
    background: var(--accent);
    color: var(--text-primary);
}

.period-selector {
    display: flex;
    gap: 0.5rem;
    background: var(--card-bg);
    padding: 0.25rem;
    border-radius: 0.5rem;
}

.period-selector button {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: 0.25rem;
    cursor: pointer;
    transition: all 0.2s;
}

.period-selector button.active {
    background: var(--accent);
    color: var(--text-primary);
}

.theme-toggle {
    background: var(--card-bg);
    border: none;
    padding: 0.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    color: var(--text-primary);
}

.metric-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.metric-card h3 {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.metric-card .value {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.metric-card .trend {
    font-size: 0.875rem;
}

.trend.positive {
    color: var(--success);
}

.trend.negative {
    color: var(--danger);
}

.chart-container {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.chart-container h3 {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.error-message {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--danger);
    color: white;
    padding: 1rem;
    border-radius: 0.5rem;
    animation: slideIn 0.3s ease-out;
    z-index: 1000;
}

@keyframes slideIn {
    from { transform: translateY(100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}