:root {
    --navy-950: #061323;
    --navy-900: #0b1d33;
    --navy-800: #102b4a;
    --blue-600: #2563eb;
    --blue-500: #3b82f6;
    --cyan-500: #06b6d4;
    --red-600: #dc2626;
    --amber-500: #f59e0b;
    --green-600: #16a34a;
    --slate-900: #111827;
    --slate-700: #334155;
    --slate-500: #64748b;
    --slate-200: #e2e8f0;
    --slate-100: #f1f5f9;
    --white: #ffffff;
    --shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--slate-100);
    color: var(--slate-900);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}

a {
    color: inherit;
    text-decoration: none;
}

.app-shell {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    min-height: 100vh;
}

.sidebar {
    background: linear-gradient(180deg, var(--navy-950), var(--navy-900));
    color: var(--white);
    display: flex;
    flex-direction: column;
    gap: 28px;
    padding: 26px 22px;
}

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

.brand-mark {
    align-items: center;
    background: var(--blue-500);
    border-radius: 8px;
    display: inline-flex;
    font-weight: 800;
    height: 42px;
    justify-content: center;
    width: 42px;
}

.brand strong,
.brand small {
    display: block;
}

.brand small,
.principle span,
.muted,
.visibility-note,
.event-row small,
.signal-row small,
.brief-item small,
.detail-header p {
    color: var(--slate-500);
}

.sidebar .brand small,
.sidebar .principle span {
    color: rgba(255, 255, 255, 0.68);
}

.nav-stack {
    display: grid;
    gap: 8px;
}

.nav-stack a {
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.76);
    padding: 10px 12px;
}

.nav-stack a.active,
.nav-stack a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.principle {
    border-top: 1px solid rgba(255, 255, 255, 0.16);
    display: grid;
    gap: 8px;
    margin-top: auto;
    padding-top: 18px;
}

.main-panel {
    min-width: 0;
    padding: 28px;
}

.topbar,
.status-band,
.section-heading,
.detail-header,
.action-bar {
    align-items: center;
    display: flex;
}

.topbar {
    justify-content: space-between;
    margin-bottom: 22px;
}

.eyebrow {
    color: var(--blue-600);
    font-size: 13px;
    font-weight: 800;
    margin: 0 0 4px;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    font-size: clamp(30px, 4vw, 44px);
    line-height: 1.1;
    margin-bottom: 0;
}

h2 {
    font-size: 18px;
    line-height: 1.25;
    margin-bottom: 0;
}

h3 {
    color: var(--slate-700);
    font-size: 13px;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.button,
button {
    background: var(--blue-600);
    border: 0;
    border-radius: 8px;
    color: var(--white);
    cursor: pointer;
    font-size: 14px;
    font-weight: 800;
    line-height: 1;
    min-height: 42px;
    padding: 0 16px;
}

.button-secondary {
    background: var(--navy-800);
}

.flash,
.error-box {
    border-radius: 8px;
    margin-bottom: 18px;
    padding: 12px 14px;
}

.flash {
    background: #dcfce7;
    color: #166534;
}

.error-box {
    background: #fee2e2;
    color: #991b1b;
}

.login-panel,
.panel,
.empty-state {
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.login-panel {
    display: grid;
    gap: 22px;
    margin: 5vh auto 0;
    max-width: 480px;
    padding: 28px;
}

.form-stack {
    display: grid;
    gap: 16px;
}

label {
    color: var(--slate-700);
    display: grid;
    font-size: 13px;
    font-weight: 800;
    gap: 8px;
}

input,
select {
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: 8px;
    color: var(--slate-900);
    font: inherit;
    min-height: 42px;
    padding: 8px 10px;
}

.checkbox-row {
    align-items: center;
    display: flex;
    font-weight: 600;
}

.checkbox-row input {
    min-height: auto;
}

.status-band {
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: 8px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 16px;
    grid-template-columns: minmax(220px, 1fr) repeat(3, minmax(160px, auto));
    margin-bottom: 20px;
    padding: 16px;
}

.client-selector {
    display: grid;
    gap: 8px;
}

.review-strip {
    border-left: 1px solid var(--slate-200);
    display: grid;
    gap: 2px;
    padding-left: 16px;
}

.review-strip span {
    color: var(--slate-500);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
}

.dashboard-grid,
.lower-grid,
.detail-layout {
    display: grid;
    gap: 18px;
}

.dashboard-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-bottom: 18px;
}

.lower-grid {
    align-items: start;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.panel-column {
    display: grid;
    gap: 18px;
}

.panel {
    min-width: 0;
    padding: 18px;
}

.section-heading {
    border-bottom: 1px solid var(--slate-200);
    justify-content: space-between;
    margin-bottom: 14px;
    padding-bottom: 12px;
}

.section-heading span {
    background: var(--slate-100);
    border-radius: 999px;
    color: var(--slate-700);
    font-size: 12px;
    font-weight: 800;
    padding: 5px 9px;
}

.signal-row,
.event-row,
.brief-item {
    border-bottom: 1px solid var(--slate-200);
    display: grid;
    gap: 5px;
    padding: 12px 0;
}

.signal-row:last-child,
.event-row:last-child,
.brief-item:last-child {
    border-bottom: 0;
}

.signal-row:hover,
.event-row:hover {
    color: var(--blue-600);
}

.urgency {
    color: var(--slate-700);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
}

.critical-dot {
    color: var(--red-600);
}

.attention-dot {
    color: var(--amber-500);
}

.watch-dot {
    color: var(--blue-600);
}

.summary-grid {
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric {
    background: var(--slate-100);
    border-radius: 8px;
    display: grid;
    gap: 6px;
    min-height: 96px;
    padding: 14px;
}

.metric span {
    color: var(--slate-500);
    font-size: 12px;
    font-weight: 800;
}

.metric strong {
    font-size: 30px;
}

.brief-summary {
    color: var(--slate-700);
}

.visibility-note {
    border-top: 1px solid var(--slate-200);
    font-size: 13px;
    font-weight: 800;
    margin: 14px 0 0;
    padding-top: 12px;
}

.detail-layout {
    grid-template-columns: minmax(0, 1fr) 320px;
}

.detail-panel {
    min-height: 420px;
}

.detail-side,
.detail-audit {
    align-self: start;
}

.detail-audit {
    grid-column: 1 / -1;
}

.detail-header {
    border-bottom: 1px solid var(--slate-200);
    justify-content: space-between;
    margin-bottom: 18px;
    padding-bottom: 16px;
}

.back-link {
    color: var(--blue-600);
    display: inline-block;
    font-size: 13px;
    font-weight: 800;
    margin-bottom: 8px;
}

.detail-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.detail-grid section {
    background: var(--slate-100);
    border-radius: 8px;
    padding: 16px;
}

.action-bar {
    border-top: 1px solid var(--slate-200);
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
    padding-top: 16px;
}

dl {
    display: grid;
    gap: 14px;
    margin: 0;
}

dt {
    color: var(--slate-500);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
}

dd {
    font-weight: 800;
    margin: 2px 0 0;
}

@media (max-width: 1100px) {
    .app-shell,
    .dashboard-grid,
    .lower-grid,
    .detail-layout,
    .status-band {
        grid-template-columns: 1fr;
    }

    .sidebar {
        min-height: auto;
    }

    .review-strip {
        border-left: 0;
        border-top: 1px solid var(--slate-200);
        padding-left: 0;
        padding-top: 12px;
    }
}

@media (max-width: 720px) {
    .main-panel {
        padding: 18px;
    }

    .topbar,
    .detail-header {
        align-items: flex-start;
        flex-direction: column;
        gap: 14px;
    }

    .summary-grid,
    .detail-grid {
        grid-template-columns: 1fr;
    }
}