/* ============================================================
   ThreatScoutDomains — Core Stylesheet
   Theme: Dark Cyber-Intelligence
   Design principles:
   - Low glare for extended SOC sessions
   - High contrast on actionable data
   - Clear visual hierarchy
   - Evidence-first layout
   ============================================================ */

/* ── CSS Custom Properties ── */
:root {
    /* Base palette */
    --bg-primary:       #0a0e17;
    --bg-secondary:     #111827;
    --bg-tertiary:      #1a2332;
    --bg-card:          #151d2b;
    --bg-input:         #0d1117;

    /* Borders */
    --border-primary:   #1e293b;
    --border-focus:     #3b82f6;
    --border-subtle:    #1a2332;

    /* Text */
    --text-primary:     #e2e8f0;
    --text-secondary:   #94a3b8;
    --text-muted:       #64748b;
    --text-heading:     #f1f5f9;

    /* Accent colors */
    --accent-blue:      #3b82f6;
    --accent-blue-dim:  #1e40af;
    --accent-green:     #10b981;
    --accent-green-dim: #065f46;
    --accent-red:       #ef4444;
    --accent-red-dim:   #7f1d1d;
    --accent-amber:     #f59e0b;
    --accent-amber-dim: #78350f;
    --accent-cyan:      #06b6d4;
    --accent-purple:    #8b5cf6;

    /* Semantic colors */
    --status-new:       var(--accent-blue);
    --status-reviewing: var(--accent-amber);
    --status-confirmed: var(--accent-red);
    --status-dismissed: var(--text-muted);

    /* Spacing */
    --space-xs:  0.25rem;
    --space-sm:  0.5rem;
    --space-md:  1rem;
    --space-lg:  1.5rem;
    --space-xl:  2rem;
    --space-2xl: 3rem;

    /* Typography */
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Borders & Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
}

/* ── Reset & Base ── */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.15s ease;
}

a:hover {
    color: #60a5fa;
}

/* ── Login Page ── */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-lg);
    background:
        radial-gradient(ellipse at 20% 50%, rgba(59, 130, 246, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(6, 182, 212, 0.04) 0%, transparent 50%),
        var(--bg-primary);
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-brand {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.login-brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent-blue-dim), var(--accent-blue));
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.2);
}

.login-brand-icon svg {
    width: 28px;
    height: 28px;
    fill: none;
    stroke: white;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.login-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.02em;
}

.login-brand p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
}

/* ── Forms ── */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.7rem 0.85rem;
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.7rem 1.25rem;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent-blue);
    color: #fff;
    border-color: var(--accent-blue);
}

.btn-primary:hover:not(:disabled) {
    background: #2563eb;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.btn-full {
    width: 100%;
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

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

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

.btn-danger {
    background: var(--accent-red-dim);
    color: var(--accent-red);
    border-color: rgba(239, 68, 68, 0.3);
}

.btn-danger:hover:not(:disabled) {
    background: rgba(239, 68, 68, 0.2);
}

/* ── Alerts / Messages ── */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    margin-bottom: var(--space-lg);
    border: 1px solid;
}

.alert-error {
    background: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.25);
    color: #fca5a5;
}

.alert-success {
    background: rgba(16, 185, 129, 0.08);
    border-color: rgba(16, 185, 129, 0.25);
    color: #6ee7b7;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.08);
    border-color: rgba(245, 158, 11, 0.25);
    color: #fcd34d;
}

.alert-info {
    background: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.25);
    color: #93c5fd;
}

/* ── App Layout ── */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-primary);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-primary);
}

.sidebar-brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-blue-dim), var(--accent-blue));
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.sidebar-brand-icon svg {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: white;
    stroke-width: 2;
}

.sidebar-brand-text {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.01em;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-md) 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.55rem var(--space-lg);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.12s ease;
    border-left: 2px solid transparent;
}

.sidebar-nav a:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

.sidebar-nav a.active {
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.06);
    border-left-color: var(--accent-blue);
}

.sidebar-nav a svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.sidebar-section-label {
    padding: var(--space-md) var(--space-lg) 0.25rem;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-top: var(--space-sm);
}

.sidebar-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--border-primary);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.sidebar-user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--accent-blue);
    flex-shrink: 0;
}

.sidebar-user-info {
    overflow: hidden;
}

.sidebar-user-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Main content area */
.main-content {
    flex: 1;
    margin-left: 240px;
    padding: var(--space-xl) var(--space-2xl);
    min-height: 100vh;
}

/* ── Page Header ── */
.page-header {
    margin-bottom: var(--space-xl);
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.02em;
}

.page-header p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* ── Metric Cards ── */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
}

.metric-card--blue::before   { background: var(--accent-blue); }
.metric-card--green::before  { background: var(--accent-green); }
.metric-card--amber::before  { background: var(--accent-amber); }
.metric-card--red::before    { background: var(--accent-red); }
.metric-card--cyan::before   { background: var(--accent-cyan); }
.metric-card--purple::before { background: var(--accent-purple); }

.metric-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-sm);
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-heading);
    font-family: var(--font-mono);
    letter-spacing: -0.02em;
}

.metric-subtext {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* ── Data Tables ── */
.table-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-primary);
}

.table-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-heading);
}

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

thead th {
    padding: 0.7rem var(--space-lg);
    text-align: left;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid var(--border-primary);
}

tbody td {
    padding: 0.75rem var(--space-lg);
    font-size: 0.85rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-subtle);
}

tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* Domain display */
.domain-cell {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 500;
}

.domain-original {
    color: var(--text-muted);
    font-size: 0.75rem;
    display: block;
    margin-top: 2px;
}

/* ── Status Badges ── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0.2rem 0.55rem;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.badge-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    display: inline-block;
}

/* DNS / HTTP status */
.badge-valid {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.badge-valid .badge-dot { background: var(--accent-green); }

.badge-invalid {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.badge-invalid .badge-dot { background: var(--accent-red); }

.badge-unknown {
    background: rgba(100, 116, 139, 0.15);
    color: var(--text-muted);
}

.badge-unknown .badge-dot { background: var(--text-muted); }

/* Discovery method badges */
.badge-method {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-purple);
}

/* Workflow status */
.badge-new       { background: rgba(59, 130, 246, 0.1);  color: var(--accent-blue); }
.badge-reviewing { background: rgba(245, 158, 11, 0.1);  color: var(--accent-amber); }
.badge-confirmed { background: rgba(239, 68, 68, 0.1);   color: var(--accent-red); }
.badge-dismissed { background: rgba(100, 116, 139, 0.1); color: var(--text-muted); }

/* Risk score */
.badge-risk-low      { background: rgba(16, 185, 129, 0.12); color: var(--accent-green); }
.badge-risk-medium   { background: rgba(245, 158, 11, 0.12);  color: var(--accent-amber); }
.badge-risk-high     { background: rgba(239, 68, 68, 0.12);   color: var(--accent-red); }
.badge-risk-critical { background: rgba(239, 68, 68, 0.2);    color: var(--accent-red); font-weight: 700; }

/* ── Filter Bar ── */
.filter-bar {
    display: flex;
    gap: var(--space-md);
    align-items: center;
    flex-wrap: wrap;
}

.filter-bar select {
    padding: 0.4rem 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    cursor: pointer;
}

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

/* ── Candidate Detail ── */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.detail-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.detail-card h3 {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-subtle);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
}

.detail-row:not(:last-child) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.detail-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.detail-value {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 500;
}

.detail-value.mono {
    font-family: var(--font-mono);
    font-size: 0.82rem;
}

/* Evidence section */
.evidence-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.evidence-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.evidence-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid var(--border-primary);
}

.evidence-card-header h4 {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.evidence-card-body {
    padding: var(--space-lg);
}

.evidence-screenshot {
    width: 100%;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-primary);
}

.evidence-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
}

/* ── Utility Classes ── */
.text-mono  { font-family: var(--font-mono); }
.text-muted { color: var(--text-muted); }
.text-sm    { font-size: 0.8rem; }
.text-xs    { font-size: 0.7rem; }

.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.flex       { display: flex; }
.items-center { align-items: center; }
.gap-sm     { gap: var(--space-sm); }
.gap-md     { gap: var(--space-md); }

/* ── Empty State ── */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    stroke: var(--text-muted);
    fill: none;
    opacity: 0.4;
    margin-bottom: var(--space-md);
}

.empty-state p {
    font-size: 0.9rem;
}

/* ── Pagination ── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-lg);
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 var(--space-sm);
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    border: 1px solid var(--border-primary);
    background: transparent;
    transition: all 0.12s ease;
}

.pagination a:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.pagination .active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: #fff;
    font-weight: 600;
}

/* ── Evidence Viewer (Phase 3) ── */
.snapshot-viewer {
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #fff;
}

.snapshot-viewer iframe {
    display: block;
    width: 100%;
    min-height: 600px;
    border: none;
}

.snapshot-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
}

/* Evidence integrity badge */
.integrity-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0.15rem 0.5rem;
    font-size: 0.65rem;
    font-weight: 600;
    font-family: var(--font-mono);
    border-radius: 100px;
    letter-spacing: 0.02em;
}

.integrity-verified {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.integrity-failed {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Artifact type indicators */
.artifact-type-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    margin-right: var(--space-sm);
    flex-shrink: 0;
}

.artifact-type-icon svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.artifact-type-icon--screenshot    { background: rgba(59, 130, 246, 0.1); color: var(--accent-blue); }
.artifact-type-icon--html_snapshot { background: rgba(139, 92, 246, 0.1); color: var(--accent-purple); }
.artifact-type-icon--http_headers  { background: rgba(6, 182, 212, 0.1);  color: var(--accent-cyan); }
.artifact-type-icon--whois         { background: rgba(245, 158, 11, 0.1); color: var(--accent-amber); }
.artifact-type-icon--ssl_cert      { background: rgba(16, 185, 129, 0.1); color: var(--accent-green); }
.artifact-type-icon--metadata      { background: rgba(100, 116, 139, 0.1); color: var(--text-muted); }

/* Collection report card */
.collection-report {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.collection-report-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid var(--border-primary);
}

.collection-report-body {
    padding: var(--space-lg);
}

.collection-step {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
}

.collection-step:not(:last-child) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.collection-step-icon {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
    font-size: 0.65rem;
    font-weight: 700;
}

.collection-step-icon--success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
}

.collection-step-icon--error {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
}

.collection-step-icon--pending {
    background: rgba(100, 116, 139, 0.15);
    color: var(--text-muted);
}

/* ── Responsive (if needed for large monitors) ── */
@media (max-width: 1024px) {
    .sidebar {
        width: 200px;
    }
    .main-content {
        margin-left: 200px;
        padding: var(--space-lg);
    }
    .detail-grid {
        grid-template-columns: 1fr;
    }
}