:root {
    --sev1: #EF4444;
    --sev2: #F59E0B;
    --sev3: #3B82F6;
    --sev4: #6B7280;
    --accent: #10B981;
    --bg: #0F172A;
    --bg-surface: #1E293B;
    --bg-elevated: #334155;
    --bg-card: rgba(30, 41, 59, .85);
    --text: #E2E8F0;
    --text-secondary: #94A3B8;
    --text-muted: #475569;
    --border: rgba(148, 163, 184, .12);
    --border-strong: rgba(148, 163, 184, .25);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition: 250ms cubic-bezier(.4, 0, .2, 1)
}

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

html,
body {
    min-height: 100%;
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased
}

.hidden {
    display: none !important
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px
}

.header h1 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text)
}

.header-actions {
    display: flex;
    gap: 8px
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-family: var(--font);
    font-size: .8rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-xs);
    cursor: pointer;
    transition: all var(--transition)
}

.btn-primary {
    background: linear-gradient(135deg, var(--sev3), #2563EB);
    color: #fff;
    box-shadow: 0 2px 12px rgba(59, 130, 246, .25)
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(59, 130, 246, .3)
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent
}

.btn-ghost:hover {
    color: var(--text);
    background: var(--bg-elevated)
}

.btn-danger {
    background: rgba(239, 68, 68, .1);
    color: var(--sev1);
    border: 1px solid rgba(239, 68, 68, .2)
}

.btn-danger:hover {
    background: rgba(239, 68, 68, .2)
}

.btn-sm {
    padding: 6px 12px;
    font-size: .72rem
}

.main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px
}

.section-title {
    font-size: 1rem;
    font-weight: 700
}

.incident-header {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px
}

.input-title {
    width: 100%;
    padding: 10px 0;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--border);
    color: var(--text);
    font-family: var(--font);
    font-size: 1.2rem;
    font-weight: 800;
    outline: none;
    margin-bottom: 16px;
    transition: border-color var(--transition)
}

.input-title:focus {
    border-bottom-color: var(--sev3)
}

.incident-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px
}

.meta-group {
    display: flex;
    flex-direction: column;
    gap: 4px
}

.meta-group label {
    font-size: .65rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .05em
}

.input,
.textarea {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    font-family: var(--font);
    font-size: .82rem;
    outline: none;
    transition: border-color var(--transition)
}

.input:focus,
.textarea:focus {
    border-color: var(--sev3);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, .15)
}

.textarea {
    resize: vertical;
    line-height: 1.5
}

.mono {
    font-family: var(--font-mono);
    font-size: .78rem
}

select.input {
    appearance: none;
    padding-right: 24px;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2394A3B8' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center
}

.sev-select option[value="1"] {
    color: var(--sev1)
}

.sev-select option[value="2"] {
    color: var(--sev2)
}

.sev-select option[value="3"] {
    color: var(--sev3)
}

.sev-select option[value="4"] {
    color: var(--sev4)
}

.metrics-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 20px
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center
}

.metric-label {
    font-size: .65rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .08em;
    display: block;
    margin-bottom: 4px
}

.metric-val {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--sev3);
    display: block;
    font-family: var(--font-mono)
}

.metric-sub {
    font-size: .6rem;
    color: var(--text-muted);
    margin-top: 2px;
    display: block
}

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

.timeline-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px
}

.timeline {
    position: relative;
    min-height: 60px;
    padding: 20px 0
}

.timeline-line {
    position: absolute;
    top: 36px;
    left: 24px;
    right: 24px;
    height: 2px;
    background: var(--border-strong);
    z-index: 0
}

.timeline-events {
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    z-index: 1
}

.event-card {
    display: grid;
    grid-template-columns: 80px 28px 1fr auto;
    gap: 12px;
    align-items: flex-start;
    padding: 12px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    cursor: pointer
}

.event-card:hover {
    border-color: var(--border-strong);
    background: var(--bg-surface)
}

.event-time {
    font-family: var(--font-mono);
    font-size: .78rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding-top: 2px
}

.event-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-top: 4px;
    flex-shrink: 0
}

.event-dot.alert {
    background: var(--sev1);
    box-shadow: 0 0 8px rgba(239, 68, 68, .4)
}

.event-dot.investigation {
    background: var(--sev2);
    box-shadow: 0 0 8px rgba(245, 158, 11, .4)
}

.event-dot.mitigation {
    background: var(--sev3);
    box-shadow: 0 0 8px rgba(59, 130, 246, .4)
}

.event-dot.resolution {
    background: var(--accent);
    box-shadow: 0 0 8px rgba(16, 185, 129, .4)
}

.event-dot.communication {
    background: #8B5CF6;
    box-shadow: 0 0 8px rgba(139, 92, 246, .4)
}

.event-body {
    flex: 1
}

.event-type-badge {
    display: inline-block;
    font-size: .6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 4px
}

.event-type-badge.alert {
    background: rgba(239, 68, 68, .12);
    color: var(--sev1)
}

.event-type-badge.investigation {
    background: rgba(245, 158, 11, .12);
    color: var(--sev2)
}

.event-type-badge.mitigation {
    background: rgba(59, 130, 246, .12);
    color: var(--sev3)
}

.event-type-badge.resolution {
    background: rgba(16, 185, 129, .12);
    color: var(--accent)
}

.event-type-badge.communication {
    background: rgba(139, 92, 246, .12);
    color: #8B5CF6
}

.event-desc {
    font-size: .82rem;
    line-height: 1.4;
    color: var(--text)
}

.event-link {
    font-size: .68rem;
    color: var(--sev3);
    text-decoration: none;
    margin-top: 4px;
    display: inline-block
}

.event-link:hover {
    text-decoration: underline
}

.event-elapsed {
    font-family: var(--font-mono);
    font-size: .65rem;
    color: var(--text-muted);
    white-space: nowrap;
    padding-top: 2px
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .6);
    backdrop-filter: blur(4px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center
}

.modal {
    background: var(--bg-surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    padding: 24px;
    max-width: 520px;
    width: 90vw;
    animation: slideUp .25s ease
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px)
    }

    to {
        opacity: 1;
        transform: translateY(0)
    }
}

.modal-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px
}

.form-group.full-width {
    grid-column: 1/-1
}

.form-group label {
    font-size: .68rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: .05em
}

.modal-actions {
    display: flex;
    gap: 8px
}

.empty-state {
    text-align: center;
    padding: 32px;
    color: var(--text-muted);
    font-size: .82rem
}

@media(max-width:768px) {
    .metrics-row {
        grid-template-columns: repeat(2, 1fr)
    }

    .incident-meta {
        grid-template-columns: 1fr
    }

    .form-grid {
        grid-template-columns: 1fr
    }

    .event-card {
        grid-template-columns: 60px 20px 1fr
    }

    .event-elapsed {
        display: none
    }

    .main {
        padding: 16px
    }
}