/**
 * Analytics Module - Premium Styles
 * Dashboard with glassmorphism cards and charts
 */

/* ========== Container ========== */
.analytics-container {
    padding: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

.analytics-header {
    margin-bottom: 32px;
}

.analytics-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.analytics-subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* ========== Stats Cards Row ========== */
.analytics-stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

@media (max-width: 1024px) {
    .analytics-stats-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .analytics-stats-row {
        grid-template-columns: 1fr;
    }
}

.analytics-stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.analytics-stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-secondary, var(--accent)));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.analytics-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.analytics-stat-card:hover::before {
    opacity: 1;
}

.analytics-stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.analytics-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: var(--accent-muted, rgba(99, 102, 241, 0.15));
}

.analytics-stat-trend {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
}

.analytics-stat-trend.up {
    color: #22c55e;
    background: rgba(34, 197, 94, 0.15);
}

.analytics-stat-trend.down {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.15);
}

.analytics-stat-trend.neutral {
    color: var(--text-muted);
    background: var(--hover);
}

.analytics-stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.analytics-stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ========== Charts Section ========== */
.analytics-charts-row {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

@media (max-width: 900px) {
    .analytics-charts-row {
        grid-template-columns: 1fr;
    }
}

.analytics-chart-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
}

.analytics-chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.analytics-chart-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.analytics-chart-period {
    display: flex;
    gap: 8px;
}

.analytics-period-btn {
    padding: 6px 14px;
    border-radius: 8px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.analytics-period-btn:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.analytics-period-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.analytics-chart-canvas {
    width: 100%;
    height: 250px;
}

/* ========== Streak & Productivity ========== */
.analytics-streak-card {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.analytics-streak-main {
    text-align: center;
    padding: 24px;
    background: linear-gradient(135deg, var(--accent-muted, rgba(99, 102, 241, 0.1)) 0%, transparent 100%);
    border-radius: 12px;
}

.analytics-streak-icon {
    font-size: 3rem;
    margin-bottom: 8px;
}

.analytics-streak-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.analytics-streak-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 4px;
}

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

.analytics-streak-stat {
    text-align: center;
    padding: 16px;
    background: var(--background);
    border-radius: 10px;
}

.analytics-streak-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.analytics-streak-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ========== Recent Activity ========== */
.analytics-activity-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
}

.analytics-activity-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.analytics-activity-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.analytics-activity-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 10px;
    transition: all 0.2s ease;
}

.analytics-activity-item:hover {
    background: var(--hover);
}

.analytics-activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.analytics-activity-icon.note { background: rgba(59, 130, 246, 0.15); }
.analytics-activity-icon.task { background: rgba(34, 197, 94, 0.15); }
.analytics-activity-icon.message { background: rgba(139, 92, 246, 0.15); }
.analytics-activity-icon.achievement { background: rgba(245, 158, 11, 0.15); }

.analytics-activity-content {
    flex: 1;
    min-width: 0;
}

.analytics-activity-text {
    font-size: 0.9rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.analytics-activity-text strong {
    color: var(--accent);
}

.analytics-activity-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* ========== Loading ========== */
.analytics-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 40px;
    color: var(--text-muted);
}

.analytics-loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}