:root {
    --bg: #f7f8fc;
    --bg-secondary: #eaecf5;
    --text: #1a1d2e;
    --text-muted: #555970;
    --text-faint: #8b90a8;
    --border: #d4d8ea;
    --border-subtle: #e4e7f2;
    --border-input: #c4c9de;
    --hover-bg: #dde1f5;
    --input-bg: #fff;
    --input-text: #1a1d2e;
    --scrollbar-bg: #f7f8fc;
    --accent-orange: #F5A623;
    --pipe-color: #9333ea;
    --admin-badge: #9333ea;
    --stripe-bg: rgba(0,0,50,0.03);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: Arial, Helvetica, sans-serif; background: var(--bg); color: var(--text); font-size: 14px; scrollbar-gutter: stable; }

::selection { background: #5729DB; color: #fff; }

::-webkit-scrollbar { width: 14px; }
::-webkit-scrollbar-track { background: var(--scrollbar-bg); }
::-webkit-scrollbar-thumb { border: 4px solid var(--scrollbar-bg); border-radius: 20px; background-color: #5729DB; }

header {
    background-image: linear-gradient(135deg, #003177, #5729DB);
    background-attachment: fixed;
    padding: 0 20px 0 14px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
    position: sticky;
    top: 0;
    z-index: 200;
}
header h1 { color: #fff; font-size: 1rem; font-weight: bold; }
header a { color: rgba(255,255,255,0.75); text-decoration: none; font-size: 0.85rem; transition: color 0.1s; }
header a:hover { color: #fff; }
header span { color: rgba(255,255,255,0.75); font-size: 0.85rem; }

.dark-mode-btn {
    background: none; border: none; cursor: pointer;
    font-size: 1.1rem; padding: 2px 6px; line-height: 1;
    opacity: 0.75; transition: opacity 0.1s;
}
.dark-mode-btn:hover { opacity: 1; }

/* Tabs */
.tabs {
    display: flex;
    align-items: center;
    gap: 0;
    border-bottom: 2px solid var(--border);
    background: var(--bg-secondary);
    padding: 0 20px;
    position: sticky;
    top: 56px;
    z-index: 190;
}
.collapse-all-btn {
    margin-left: auto;
    margin-right: 16px;
    background: none; border: 1px solid var(--border); border-radius: 50%;
    cursor: pointer; color: var(--text-muted); font-size: 1.1rem;
    width: 26px; height: 26px; flex-shrink: 0;
    display: inline-flex; align-items: center; justify-content: center;
    transition: border-color 0.1s, color 0.1s;
}
.tab {
    background: none; border: none; cursor: pointer;
    padding: 12px 20px; font-size: 0.9rem; font-weight: 600;
    color: var(--text-muted); border-bottom: 2px solid transparent;
    margin-bottom: -2px; transition: color 0.1s;
}
.tab:hover { color: var(--text); }
.tab.active { color: #5729DB; border-bottom-color: #5729DB; }

/* Subtabs */
.subtabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    padding: 0 20px;
}
.subtab {
    background: none; border: none; cursor: pointer;
    padding: 8px 16px; font-size: 0.85rem; font-weight: 600;
    color: var(--text-muted); border-bottom: 2px solid transparent;
    margin-bottom: -1px; transition: color 0.1s;
}
.subtab:hover { color: var(--text); }
.subtab.active { color: #5729DB; border-bottom-color: #5729DB; }

/* Controls bar */
.controls {
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    position: sticky;
    top: 100px;
    z-index: 180;
}
.controls label { font-size: 0.85rem; color: var(--text-muted); }
.controls select {
    background: var(--input-bg); color: var(--input-text);
    border: 1px solid var(--border-input); border-radius: 4px;
    padding: 4px 8px; font-size: 0.85rem; outline: none; cursor: pointer;
}
.controls select:focus { border-color: #5729DB; }
.controls input[type=search] {
    background: var(--input-bg); color: var(--input-text);
    border: 1px solid var(--border-input); border-radius: 4px;
    padding: 4px 8px; font-size: 0.85rem; outline: none; width: 280px;
}
.controls input[type=search]:focus { border-color: #5729DB; }

.type-filter { display: flex; gap: 2px; }
.type-btn { background: none; border: 1px solid var(--border-input); border-radius: 4px; padding: 3px 10px; font-size: 0.8rem; cursor: pointer; color: var(--text-muted); transition: all 0.1s; }
.type-btn:hover { border-color: #5729DB; color: var(--text); }
.type-btn.active { background: #5729DB; border-color: #5729DB; color: #fff; }

/* Action filter dropdown */
.action-filter-btn {
    background: none; border: 1px solid var(--border-input); border-radius: 4px;
    padding: 3px 10px; font-size: 0.8rem; cursor: pointer; color: var(--text-muted);
    transition: border-color 0.1s, color 0.1s; user-select: none;
}
.action-filter-btn:hover { border-color: #5729DB; color: var(--text); }
.action-filter-menu {
    position: fixed; z-index: 10000000;
    background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
    padding: 8px 10px; grid-template-columns: 1fr 1fr;
    gap: 3px 16px; min-width: 280px;
    max-height: 70vh; overflow-y: auto;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}
.action-filter-menu label {
    display: flex; align-items: center; gap: 6px;
    font-size: 0.82rem; cursor: pointer; white-space: nowrap; color: var(--text);
}
.action-filter-menu input[type=checkbox] { accent-color: #5729DB; cursor: pointer; }
.action-filter-all {
    grid-column: 1 / -1; font-size: 0.78rem; color: var(--text-muted);
    padding-bottom: 4px; border-bottom: 1px solid var(--border-subtle); margin-bottom: 2px;
}
.action-filter-all a { color: #5729DB; text-decoration: none; }
.action-filter-all a:hover { text-decoration: underline; }

/* Dashboard grid */
.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 16px 20px;
}
.full-width { grid-column: 1 / -1; }

.chart-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 14px 16px;
    box-shadow: 0 1px 4px rgba(0,0,80,0.06);
}
.chart-card h2 {
    font-size: 0.8rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.chart-card.collapsed h2 { margin-bottom: 0; }
.chart-card.collapsed > *:not(h2) { display: none; }
.collapse-btn {
    background: none; border: 1px solid var(--border); border-radius: 50%;
    cursor: pointer; color: var(--text-muted); font-size: 1.1rem;
    width: 24px; height: 24px; flex-shrink: 0;
    display: inline-flex; align-items: center; justify-content: center;
    transition: border-color 0.1s, color 0.1s, transform 0.15s;
    text-transform: none; letter-spacing: 0; line-height: 1;
}
.collapse-btn:hover { border-color: var(--text-muted); color: var(--text); }
.chart-card.collapsed .collapse-btn { transform: rotate(-90deg); }
.chart { height: 300px; }

/* Table */
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th {
    text-align: left; padding: 6px 10px;
    border-bottom: 1px solid var(--border);
    color: var(--text-faint); font-size: 0.75rem;
    text-transform: uppercase; letter-spacing: 0.04em; font-weight: 600;
    background: var(--bg-secondary);
}
td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--border-subtle); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--hover-bg); }
.table-striped tbody tr:nth-child(even) td { background-color: var(--stripe-bg); }
.table-striped tbody tr:nth-child(even):hover td { background-color: var(--hover-bg); }

.empty { color: var(--text-faint); font-size: 0.9rem; padding: 2rem; text-align: center; }

/* Detail modal */
#detail-panel { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 100; align-items: center; justify-content: center; }
#detail-panel.visible { display: flex; }
#detail-box { background: var(--bg); border-radius: 8px; box-shadow: 0 8px 32px rgba(0,0,0,0.25); width: 960px; max-width: 95vw; max-height: 85vh; display: flex; flex-direction: column; overflow: hidden; }
#detail-header { padding: 12px 16px; border-bottom: 1px solid var(--border-subtle); display: flex; align-items: center; gap: 8px; background: var(--bg-secondary); flex-wrap: wrap; }
#detail-header h2 { font-size: 1rem; flex: 1; min-width: 200px; }
#detail-header select { background: var(--input-bg); color: var(--input-text); border: 1px solid var(--border-input); border-radius: 4px; padding: 4px 8px; font-size: 0.85rem; outline: none; }
#detail-body { flex: 1; overflow-y: auto; }

.clickable { cursor: pointer; }
.clickable:hover { text-decoration: underline; color: #266EE8; }

/* Buttons */
.btn { padding: 8px 20px; border: none; border-radius: 5px; font-size: 0.85rem; font-weight: bold; cursor: pointer; transition: background 0.1s; }
.btn-primary { background: #266EE8; color: #fff; }
.btn-primary:hover { background: #3c78e0; }
.btn-cancel { background: var(--bg-secondary); color: var(--text-muted); border: 1px solid var(--border); }
.btn-cancel:hover { color: var(--text); }
.sr-input {
    display: block; width: 100%; margin-top: 3px;
    background: var(--input-bg); color: var(--input-text);
    border: 1px solid var(--border-input); border-radius: 4px;
    padding: 5px 8px; font-size: 0.85rem; outline: none;
}
.sr-input:focus { border-color: #5729DB; }

/* Alert tab badge */
.alert-badge {
    display: inline-flex; align-items: center; justify-content: center;
    background: #c0392b; color: #fff;
    font-size: 0.7rem; font-weight: bold; line-height: 1;
    min-width: 16px; height: 16px; border-radius: 8px; padding: 0 4px;
    margin-left: 5px; vertical-align: middle;
}

/* Severity indicators */
.severity-info     { color: #266EE8; font-weight: bold; }
.severity-warning  { color: #d97706; font-weight: bold; }
.severity-critical { color: #c0392b;    font-weight: bold; }
.severity-dot {
    display: inline-block; width: 8px; height: 8px; border-radius: 50%;
    margin-right: 5px; flex-shrink: 0;
}
.severity-dot.info     { background: #266EE8; }
.severity-dot.warning  { background: #d97706; }
.severity-dot.critical { background: #c0392b; }

/* Alert row states */
tr.alert-acknowledged td { opacity: 0.55; }
tr.alert-dismissed    td { opacity: 0.35; }
tr.alert-acting       td { opacity: 0.25; pointer-events: none; transition: opacity 0.15s; }
tr.alert-selected     td { background: rgba(87,41,219,0.06) !important; }

/* Alert status pill */
.alert-status-pill {
    display: inline-block; padding: 1px 7px; border-radius: 10px;
    font-size: 0.72rem; font-weight: 600; letter-spacing: 0.02em;
}
.alert-status-pill.acknowledged { background: rgba(38,110,232,0.12); color: #266EE8; }
.alert-status-pill.dismissed    { background: rgba(0,0,0,0.07);       color: var(--text-faint); }

/* Alerts bulk action bar */
.alerts-bulk-bar {
    display: flex; align-items: center; gap: 8px;
    padding: 7px 12px; margin-bottom: 10px;
    background: rgba(87,41,219,0.07); border: 1px solid rgba(87,41,219,0.2);
    border-radius: 5px; font-size: 0.83rem;
}
.alerts-bulk-bar .bulk-count { color: #5729DB; font-weight: 600; flex: 1; }

/* Alerts help button */
.alerts-help-btn {
    width: 22px; height: 22px; border-radius: 50%; flex-shrink: 0;
    background: none; border: 2px solid var(--accent-orange); color: var(--accent-orange);
    font-size: 0.8rem; font-weight: bold; cursor: pointer; line-height: 1;
    display: inline-flex; align-items: center; justify-content: center;
    transition: background 0.1s, color 0.1s;
}
.alerts-help-btn:hover { background: var(--accent-orange); color: #fff; }