/* ============================================
   ALERTS CENTER — UnPatient+ Medical Dashboard
   ============================================ */

/* ----- Page Header ----- */
.alerts-page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 32px;
}

.alerts-page-header-left h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 4px 0;
}

.alerts-page-header-left p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

.alerts-page-header-right {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* ----- Filter Select ----- */
.filter-select {
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-card);
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s ease;
    font-family: 'Inter', sans-serif;
}

.filter-select:hover,
.filter-select:focus {
    border-color: var(--primary);
}

/* ----- Mark All Read Button ----- */
.mark-all-read-btn {
    padding: 10px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: border-color 0.2s ease, color 0.2s ease;
    font-family: 'Inter', sans-serif;
    display: flex;
    align-items: center;
    gap: 8px;
}

.mark-all-read-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ----- Stats Grid ----- */
.alert-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.alert-stat-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 20px;
    border: 1px solid var(--border-color);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.alert-stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.alert-stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.alert-stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.alert-stat-icon.active {
    background: var(--info-light);
    color: var(--info);
}

.alert-stat-icon.critical {
    background: var(--critical-light);
    color: var(--critical);
}

.alert-stat-icon.time {
    background: var(--warning-light);
    color: var(--warning);
}

.alert-stat-icon.resolved {
    background: var(--success-light);
    color: var(--success);
}

.alert-stat-trend {
    font-size: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
}

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

.alert-stat-trend.negative {
    color: var(--critical);
}

.alert-stat-trend.neutral {
    color: var(--text-muted);
    font-size: 11px;
}

.alert-stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 4px;
}

.alert-stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ----- Filter Tabs ----- */
.alert-filter-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-card);
    padding: 4px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
    width: fit-content;
}

.alert-filter-tab {
    padding: 8px 16px;
    border: none;
    background: transparent;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: 'Inter', sans-serif;
    white-space: nowrap;
}

.alert-filter-tab:hover:not(.active) {
    color: var(--text-primary);
    background: var(--bg-primary);
}

.alert-filter-tab.active {
    background: var(--primary);
    color: #ffffff;
    box-shadow: var(--shadow-sm);
}

.tab-count {
    font-size: 11px;
    font-weight: 600;
    opacity: 0.8;
}

/* ----- Alert List ----- */
.alert-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 32px;
}

.alert-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 16px 20px;
    border: 1px solid var(--border-color);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    position: relative;
    overflow: hidden;
}

.alert-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* Severity Bar */
.alert-severity-bar {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
}

.alert-item.critical .alert-severity-bar {
    background: var(--critical);
}

.alert-item.warning .alert-severity-bar {
    background: var(--warning);
}

.alert-item.info .alert-severity-bar {
    background: var(--info);
}

.alert-item.resolved .alert-severity-bar {
    background: var(--success);
}

.alert-item.resolved {
    opacity: 0.6;
}

/* Alert Icon */
.alert-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    margin-left: 8px;
}

.alert-item.critical .alert-icon {
    background: var(--critical-light);
    color: var(--critical);
}

.alert-item.warning .alert-icon {
    background: var(--warning-light);
    color: var(--warning);
}

.alert-item.info .alert-icon {
    background: var(--info-light);
    color: var(--info);
}

.alert-item.resolved .alert-icon {
    background: var(--success-light);
    color: var(--success);
}

/* Alert Content */
.alert-content {
    flex: 1;
    min-width: 0;
}

.alert-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.alert-detail {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.alert-meta {
    display: flex;
    align-items: center;
    gap: 16px;
}

.alert-time,
.alert-source {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 5px;
}

.alert-time i,
.alert-source i {
    font-size: 11px;
}

/* Alert Actions */
.alert-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.alert-action-btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
    white-space: nowrap;
}

.alert-action-btn.primary {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

.alert-action-btn.primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.alert-action-btn.secondary {
    background: var(--bg-card);
    color: var(--primary);
    border-color: var(--primary);
}

.alert-action-btn.secondary:hover {
    background: var(--info-light);
}

.alert-action-btn.dismiss {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-muted);
    background: transparent;
}

.alert-action-btn.dismiss:hover {
    background: var(--success-light);
    color: var(--success);
    border-color: var(--success);
}

/* Critical alert pulse animation */
.alert-item.critical .alert-icon {
    animation: pulse-critical 2s ease-in-out infinite;
}

@keyframes pulse-critical {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.2);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(239, 68, 68, 0);
    }
}

/* ----- Two-Column Bottom Layout ----- */
.alerts-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

.alerts-two-col .card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 24px;
}

.alerts-two-col .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.alerts-two-col .card-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.btn-text {
    background: none;
    border: none;
    color: var(--primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: 'Inter', sans-serif;
    transition: opacity 0.2s;
}

.btn-text:hover {
    opacity: 0.8;
}

/* ----- Alert Rules ----- */
.alert-rules-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.alert-rule-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-color);
}

.alert-rule-item:last-child {
    border-bottom: none;
}

.rule-condition {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-primary);
    min-width: 0;
}

.rule-condition i {
    color: var(--text-muted);
    font-size: 14px;
    width: 18px;
    text-align: center;
    flex-shrink: 0;
}

.severity-badge {
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.severity-badge.critical {
    background: var(--critical-light);
    color: var(--critical);
}

.severity-badge.warning {
    background: var(--warning-light);
    color: var(--warning);
}

.severity-badge.info {
    background: var(--info-light);
    color: var(--info);
}

/* ----- Toggle Switch ----- */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 22px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #e2e8f0;
    transition: 0.3s;
    border-radius: 22px;
}

.toggle-slider::before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: #ffffff;
    transition: 0.3s;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.toggle-switch input:checked + .toggle-slider {
    background: linear-gradient(135deg, var(--accent), var(--primary));
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(18px);
}

/* ----- Alert Activity Chart ----- */
.alert-chart {
    margin-bottom: 24px;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    height: 160px;
    padding: 24px 8px 0 8px;
}

.chart-bar-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
    justify-content: flex-end;
    gap: 8px;
}

.chart-bar {
    width: 100%;
    max-width: 48px;
    border-radius: 6px 6px 2px 2px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 100%);
    opacity: 0.7;
    transition: opacity 0.2s ease;
    position: relative;
    min-height: 8px;
}

.chart-bar:hover {
    opacity: 1;
}

.chart-bar.highlight {
    opacity: 1;
}

.chart-bar::after {
    content: attr(data-value);
    position: absolute;
    top: -22px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-bar-label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

/* ----- Alert Activity Summary ----- */
.alert-activity-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.activity-summary-item {
    text-align: center;
}

.summary-value {
    display: block;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.summary-label {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ----- Responsive ----- */
@media (max-width: 1400px) {
    .alert-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .alerts-two-col {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .alerts-page-header {
        flex-direction: column;
        gap: 16px;
    }
}

@media (max-width: 768px) {
    .alert-stats-grid {
        grid-template-columns: 1fr;
    }

    .alert-item {
        flex-wrap: wrap;
    }

    .alert-actions {
        margin-top: 12px;
        width: 100%;
        justify-content: flex-end;
        border-top: 1px solid var(--border-color);
        padding-top: 8px;
    }

    .alert-filter-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        width: 100%;
    }

    .alert-filter-tabs::-webkit-scrollbar {
        display: none;
    }
}