* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: #1a2332;
    --border: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --critical: #ef4444;
    --high: #f97316;
    --medium: #eab308;
    --low: #22c55e;
    --accent: #3b82f6;
    --accent-dim: rgba(59, 130, 246, 0.15);
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* Header */
.dashboard-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.dashboard-header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.dashboard-header h1 span {
    color: var(--critical);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.live-clock {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--low);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
}

.status-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--low);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* Layout */
.dashboard-container {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: calc(100vh - 60px);
}

/* Sidebar */
.sidebar {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 24px;
    overflow-y: auto;
}

.filter-section {
    margin-bottom: 28px;
}

.filter-section h3 {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.filter-section input[type="date"] {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.filter-section input[type="date"]:focus {
    outline: none;
    border-color: var(--accent);
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 4px 0;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    accent-color: var(--accent);
}

.severity-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.severity-dot.critical { background: var(--critical); }
.severity-dot.high { background: var(--high); }
.severity-dot.medium { background: var(--medium); }
.severity-dot.low { background: var(--low); }

select {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.85rem;
}

select:focus {
    outline: none;
    border-color: var(--accent);
}

.btn-reset {
    width: 100%;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 16px;
}

.btn-reset:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Main Content */
.main-content {
    padding: 24px 32px;
    overflow-y: auto;
}

/* Stat Cards */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-card .label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.stat-card .value {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.stat-card.total .value { color: var(--accent); }
.stat-card.critical .value { color: var(--critical); }
.stat-card.high .value { color: var(--high); }
.stat-card.medium .value { color: var(--medium); }
.stat-card.low .value { color: var(--low); }

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

/* Chart Grid */
.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
}

.chart-card h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.chart-container {
    position: relative;
    width: 100%;
    min-height: 280px;
}

/* MITRE Section */
.mitre-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 24px;
}

.mitre-section h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.mitre-grid {
    display: flex;
    gap: 2px;
    overflow-x: auto;
    padding-bottom: 8px;
}

.mitre-column {
    min-width: 120px;
    flex: 1;
}

.mitre-column .tactic-header {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 8px 6px;
    text-align: center;
    border-bottom: 2px solid var(--border);
    margin-bottom: 4px;
}

.mitre-cell {
    padding: 6px;
    margin: 2px;
    border-radius: 4px;
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.mitre-cell:hover {
    transform: scale(1.05);
    z-index: 10;
}

.mitre-cell .technique-id {
    font-weight: 600;
    display: block;
    font-size: 0.6rem;
}

.mitre-cell .technique-name {
    display: block;
    font-size: 0.6rem;
    line-height: 1.3;
    margin-top: 2px;
}

.mitre-tooltip {
    display: none;
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px;
    width: 220px;
    z-index: 100;
    font-size: 0.75rem;
    text-align: left;
    color: var(--text-secondary);
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.mitre-cell:hover .mitre-tooltip {
    display: block;
}

.mitre-tooltip strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 4px;
}

/* Incident Table */
.table-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 24px;
}

.table-section h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead th {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

thead th:hover {
    color: var(--text-secondary);
}

thead th .sort-icon {
    margin-left: 4px;
    opacity: 0.3;
}

thead th.sorted .sort-icon {
    opacity: 1;
    color: var(--accent);
}

tbody tr {
    border-bottom: 1px solid rgba(30, 41, 59, 0.5);
    transition: background 0.15s;
}

tbody tr:hover {
    background: rgba(59, 130, 246, 0.05);
}

tbody td {
    padding: 12px 14px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.severity-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.severity-badge.critical { background: rgba(239,68,68,0.15); color: var(--critical); }
.severity-badge.high { background: rgba(249,115,22,0.15); color: var(--high); }
.severity-badge.medium { background: rgba(234,179,8,0.15); color: var(--medium); }
.severity-badge.low { background: rgba(34,197,94,0.15); color: var(--low); }

.status-tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 500;
}

.status-tag.open { background: rgba(239,68,68,0.1); color: var(--critical); }
.status-tag.investigating { background: rgba(249,115,22,0.1); color: var(--high); }
.status-tag.contained { background: rgba(234,179,8,0.1); color: var(--medium); }
.status-tag.resolved { background: rgba(34,197,94,0.1); color: var(--low); }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* Responsive */
@media (max-width: 1200px) {
    .stat-cards { grid-template-columns: repeat(3, 1fr); }
    .charts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
    .dashboard-container { grid-template-columns: 1fr; }
    .sidebar { display: none; }
    .stat-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .dashboard-header { padding: 12px 16px; flex-wrap: wrap; gap: 8px; }
    .main-content { padding: 16px; }
    .stat-cards { grid-template-columns: 1fr; }
}