/* ============================================
   EDHT-B — Metric Alerts Styles
   Alert panel, cards, filter bar, map rings.
   ============================================ */

/* --- Alerts View Layout (mirrors ISR) --- */

.alerts-view-layout {
    display: flex;
    height: 100%;
    overflow: hidden;
}

.alerts-view-map {
    flex: 1;
    min-width: 0;
    position: relative;
}

.alerts-view-panel {
    width: 420px;
    flex-shrink: 0;
    border-left: 1px solid var(--border-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* --- Alerts Panel --- */

.alerts-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--bg-primary);
}

.alerts-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.alerts-panel-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-primary);
}

.alerts-panel-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    color: var(--text-secondary);
}

.alerts-panel-controls label {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}

.alerts-active-count {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* --- Filter Bar --- */

.alerts-filter-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-shrink: 0;
    flex-wrap: wrap;
}

.alerts-filter-bar label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.alerts-filter-select {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 3px 6px;
    font-size: 11px;
    font-family: var(--font-sans);
    cursor: pointer;
}

.alerts-filter-select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.alerts-filter-units {
    display: none;
    flex-basis: 100%;
    padding-top: 4px;
}

.alerts-filter-units.visible {
    display: block;
}

.alerts-filter-units-list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    max-height: 80px;
    overflow-y: auto;
}

.alerts-unit-chip {
    display: flex;
    align-items: center;
    gap: 3px;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 3px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.alerts-unit-chip.selected {
    background: rgba(93, 138, 104, 0.15);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.alerts-filter-area {
    display: none;
}

.alerts-filter-area.visible {
    display: flex;
    align-items: center;
    gap: 6px;
}

.alerts-area-summary {
    font-size: 10px;
    color: var(--text-muted);
}

/* --- Tab Bar --- */

.alerts-tab-bar {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.alerts-tab-btn {
    flex: 1;
    padding: 8px 0;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    font-size: 11px;
    font-family: var(--font-sans);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
    position: relative;
}

.alerts-tab-btn:hover {
    color: var(--text-secondary);
}

.alerts-tab-btn.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

.alerts-tab-badge {
    display: inline-block;
    background: var(--accent-red);
    color: #fff;
    font-size: 9px;
    font-weight: 700;
    min-width: 16px;
    height: 16px;
    line-height: 16px;
    border-radius: 8px;
    text-align: center;
    padding: 0 4px;
    margin-left: 4px;
    vertical-align: middle;
}

.alerts-tab-badge:empty {
    display: none;
}

/* --- Tab Content --- */

#alerts-tab-content {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

/* --- Alert Cards --- */

.alert-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--text-muted);
    border-radius: 4px;
    padding: 10px 12px;
    margin-bottom: 6px;
    transition: border-color 0.2s;
}

.alert-card.severity-CRITICAL {
    border-left-color: var(--accent-red);
}

.alert-card.severity-WARNING {
    border-left-color: #ffa726;
}

.alert-card.severity-INFO {
    border-left-color: var(--accent-primary);
}

.alert-card.unacknowledged {
    animation: alert-pulse 2s ease-in-out infinite;
}

@keyframes alert-pulse {
    0%, 100% { box-shadow: none; }
    50% { box-shadow: 0 0 8px rgba(239, 83, 80, 0.3); }
}

.alert-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.alert-severity-badge {
    font-size: 9px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 3px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.alert-severity-badge.CRITICAL {
    background: rgba(239, 83, 80, 0.2);
    color: var(--accent-red);
}

.alert-severity-badge.WARNING {
    background: rgba(255, 167, 38, 0.2);
    color: #ffa726;
}

.alert-severity-badge.INFO {
    background: rgba(93, 138, 104, 0.2);
    color: var(--accent-primary);
}

.alert-card-time {
    font-size: 9px;
    color: var(--text-muted);
    margin-left: auto;
    flex-shrink: 0;
}

.alert-card-message {
    font-size: 11px;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 6px;
}

.alert-card-trend {
    display: inline-block;
    font-size: 10px;
    font-weight: 600;
    padding: 1px 5px;
    border-radius: 2px;
    margin-bottom: 6px;
}

.alert-card-trend.closing {
    background: rgba(239, 83, 80, 0.15);
    color: var(--accent-red);
}

.alert-card-trend.withdrawing {
    background: rgba(102, 187, 106, 0.15);
    color: var(--accent-green);
}

.alert-card-trend.holding {
    background: rgba(255, 167, 38, 0.15);
    color: #ffa726;
}

.alert-card-action {
    background: rgba(93, 138, 104, 0.08);
    border: 1px solid rgba(93, 138, 104, 0.2);
    border-radius: 3px;
    padding: 6px 8px;
    font-size: 10px;
    color: var(--accent-primary);
    line-height: 1.4;
    font-weight: 600;
    margin-bottom: 6px;
}

.alert-card-actions {
    display: flex;
    gap: 6px;
    margin-top: 4px;
}

.alert-btn {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 10px;
    font-family: var(--font-sans);
    font-weight: 500;
    padding: 3px 8px;
    border-radius: 3px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.alert-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

/* --- Rules Tab --- */

.alert-rule-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 4px;
}

.alert-rule-item label {
    font-size: 11px;
    color: var(--text-secondary);
    flex: 1;
}

.alert-rule-threshold {
    width: 50px;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 2px 4px;
    font-size: 11px;
    font-family: var(--font-mono);
    text-align: center;
}

.alert-rule-threshold:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.alert-rule-severity-select {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 2px 4px;
    font-size: 10px;
    font-family: var(--font-mono);
}

.alert-rule-unit {
    font-size: 10px;
    color: var(--text-muted);
}

/* --- History Tab --- */

.alert-history-item {
    padding: 6px 10px;
    border-bottom: 1px solid var(--border-color);
    font-size: 10px;
    color: var(--text-muted);
    line-height: 1.4;
}

.alert-history-item .alert-severity-badge {
    font-size: 8px;
    opacity: 0.6;
}

.alert-history-time {
    font-size: 9px;
    color: var(--text-muted);
    opacity: 0.6;
}

/* --- Empty State --- */

.alerts-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 12px;
}

.alerts-empty-icon {
    font-size: 32px;
    margin-bottom: 8px;
    opacity: 0.4;
}

/* --- Nav Badge --- */

.nav-alert-badge {
    display: inline-block;
    background: var(--accent-red);
    color: #fff;
    font-size: 9px;
    font-weight: 700;
    min-width: 14px;
    height: 14px;
    line-height: 14px;
    border-radius: 7px;
    text-align: center;
    padding: 0 3px;
    margin-left: 3px;
    vertical-align: super;
}

.nav-alert-badge:empty {
    display: none;
}

/* --- Map Alert Rings (managed via Leaflet) --- */

.alert-ring-label {
    font-size: 9px;
    font-family: var(--font-mono);
    color: var(--text-muted);
    white-space: nowrap;
    text-shadow: -1px -1px 0 #000, 1px -1px 0 #000, -1px 1px 0 #000, 1px 1px 0 #000;
    pointer-events: none;
}

/* ============================================
   Alert Area Subscriptions
   ============================================ */

.subscription-area-item {
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: 3px;
    margin-bottom: 6px;
    background: var(--bg-secondary);
    transition: opacity var(--transition-fast);
}

.subscription-area-item.inactive {
    opacity: 0.5;
}

.subscription-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.subscription-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 12px;
}

.subscription-toggle input {
    cursor: pointer;
}

.subscription-name {
    color: var(--accent-purple);
    font-weight: 600;
    font-size: 12px;
}

.subscription-bounds {
    font-size: 10px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    margin-top: 4px;
    padding-left: 22px;
}

.alert-btn-danger {
    color: var(--accent-red) !important;
    border-color: rgba(239,83,80,0.3) !important;
    font-size: 10px !important;
    padding: 2px 6px !important;
}

.alert-btn-danger:hover {
    background: rgba(239,83,80,0.15) !important;
}

.subscription-tooltip {
    background: rgba(206,147,216,0.15) !important;
    border: 1px solid var(--accent-purple) !important;
    color: var(--accent-purple) !important;
    font-family: var(--font-mono) !important;
    font-size: 10px !important;
    padding: 2px 6px !important;
    border-radius: 2px !important;
    box-shadow: none !important;
}

.subscription-tooltip::before { display: none !important; }