:root {
    /* Dark theme colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --background-elevated: #1c2540;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --accent-primary: #3b82f6;
    --accent-secondary: #06b6d4;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-error: #ef4444;
    --border-color: #475569;
    --border-light: #334155;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --radius: 12px;
    --radius-sm: 8px;
    --focus-ring: rgba(6, 182, 212, 0.8);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    background-image: linear-gradient(135deg, var(--bg-primary) 0%, #1e293b 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1800px;
    /* Increased from 1400px for widescreen monitors */
    margin: 0 auto;
    padding: 0 24px;
}

/* Widescreen optimization */
@media (min-width: 1600px) {
    .container {
        max-width: 95%;
        /* Use 95% of screen width on very wide screens */
        padding: 0 32px;
    }
}

/* Header */
.header {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    margin-bottom: 32px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

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

.logo i {
    font-size: 32px;
    color: var(--accent-primary);
}

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.nav {
    display: flex;
    gap: 8px;
}

.nav a {
    padding: 10px 20px;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav a:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.nav a.active {
    background: var(--accent-primary);
    color: white;
}

/* Flash messages */
.flash-messages {
    margin: 0 0 32px 0;
}

.flash-message {
    padding: 16px 20px;
    border-radius: var(--radius);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    box-shadow: var(--shadow);
}

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

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

.flash-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* Cards */
.card {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-color);
}

.card-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-light);
    background: rgba(51, 65, 85, 0.5);
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.card-subtitle {
    color: var(--text-muted);
    font-size: 14px;
}

.card-body {
    padding: 24px;
}

/* Tables */
.table-container {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    overflow-x: auto;
    box-shadow: var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

th {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    /* Prevent header wrapping */
    position: sticky;
    top: 0;
    z-index: 5;
    box-shadow: inset 0 -1px 0 var(--border-color);
}

td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
    vertical-align: top;
    /* Align content to top for better readability */
}

tr:hover {
    background: rgba(51, 65, 85, 0.3);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow);
}

.form-control {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 10px 14px;
    font-size: 14px;
}

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

.form-control:focus {
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
    border-color: var(--accent-secondary);
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    text-transform: none;
}

.form-help {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
}

.monospace {
    font-family: 'Monaco', 'Menlo', monospace;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

a:focus-visible,
.btn:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #2563eb);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2563eb, var(--accent-primary));
}

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

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

.btn-success {
    background: linear-gradient(135deg, var(--accent-success), #059669);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--accent-warning), #d97706);
    color: white;
}

.btn-error {
    background: linear-gradient(135deg, var(--accent-error), #dc2626);
    color: white;
}

.btn-sm {
    padding: 8px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 16px 24px;
    font-size: 16px;
}

.grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(var(--grid-min, 220px), 1fr));
    gap: var(--grid-gap, 24px);
}

@media (min-width: 1600px) {
    .grid-auto {
        grid-template-columns: repeat(auto-fit, minmax(calc(var(--grid-min, 220px) + 40px), 1fr));
    }
}

.grid-min-150 { --grid-min: 150px; }
.grid-min-180 { --grid-min: 180px; }
.grid-min-200 { --grid-min: 200px; }
.grid-min-220 { --grid-min: 220px; }
.grid-min-320 { --grid-min: 320px; }
.grid-gap-16 { --grid-gap: 16px; }

.split-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    align-items: start;
}

.split-panel .panel-box {
    background: var(--background-elevated);
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    padding: 16px 20px;
    box-shadow: var(--shadow);
}

/* Status badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px solid transparent;
}

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

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

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

.badge-info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.badge-secondary {
    background: rgba(148, 163, 184, 0.15);
    color: var(--text-secondary);
    border: 1px solid rgba(148, 163, 184, 0.3);
}

/* Delta status colors */
.delta-equal {
    color: var(--accent-success);
    font-weight: 600;
}

.delta-missing,
.delta-stricter {
    color: var(--accent-error);
    font-weight: 600;
}

.delta-extra,
.delta-looser,
.delta-different {
    color: var(--accent-warning);
    font-weight: 500;
}

.delta-ambiguous {
    color: var(--text-muted);
    font-style: italic;
}

/* Code blocks */
pre {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    padding: 16px;
    font-size: 13px;
    font-family: 'Monaco', 'Menlo', monospace;
    overflow-x: auto;
    color: var(--text-secondary);
}

/* Loading spinner */
.loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-light);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav {
        flex-wrap: wrap;
    }

    .card-body {
        padding: 16px;
    }

    table {
        font-size: 14px;
    }

    th,
    td {
        padding: 12px 16px;
    }
}

/* Utility classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-sm { font-size: 14px; }
.text-xs { font-size: 12px; }
.fw-semibold { font-weight: 600; }
.italic { font-style: italic; }
.text-accent-primary { color: var(--accent-primary); }
.text-accent-success { color: var(--accent-success); }
.text-accent-warning { color: var(--accent-warning); }
.text-accent-secondary { color: var(--accent-secondary); }
.text-warning { color: var(--accent-warning); }
.text-primary-color { color: var(--text-primary); }
.mb-05 { margin-bottom: 4px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 12px; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }
.mt-05 { margin-top: 4px; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 12px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.flex-column { flex-direction: column; }
.items-center { align-items: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 12px; }
.gap-3 { gap: 16px; }
.gap-4 { gap: 24px; }
.link-accent { color: var(--accent-primary); text-decoration: none; }
.text-faded { opacity: 0.8; }
.text-lg { font-size: 18px; }
.text-xl { font-size: 24px; }
.icon-lg { font-size: 32px; line-height: 1; }
.cursor-pointer { cursor: pointer; }

.list-muted {
    margin: 0;
    padding-left: 18px;
    font-size: 12px;
    color: var(--text-muted);
}

.skip-link {
    position: absolute;
    top: 0;
    left: 16px;
    background: var(--accent-primary);
    color: #fff;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    z-index: 200;
    transform: translateY(-100%);
    transition: transform 0.2s ease;
    text-decoration: none;
}

.skip-link:focus {
    transform: translateY(16px);
}

.grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(var(--grid-min, 220px), 1fr));
    gap: var(--grid-gap, 24px);
}

.grid-auto.tight {
    --grid-gap: 12px;
}

.stat-value {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 12px;
    letter-spacing: 0.4px;
    color: var(--text-muted);
}

.section-divider {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
}

.badge-sm {
    font-size: 11px;
    padding: 4px 10px;
}

.badge-xs {
    font-size: 10px;
    padding: 3px 8px;
}

.rounded-bottom {
    border-radius: 0 0 var(--radius) var(--radius);
}

.rounded {
    border-radius: var(--radius);
}

.muted-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.callout-card {
    border: 1px dashed var(--border-color);
    background: var(--background-elevated);
}

.callout-card.warning {
    border-left: 4px solid var(--accent-warning);
}

.empty-state {
    padding: 40px 24px;
    text-align: center;
}

.icon-xl { font-size: 48px; line-height: 1; }

.empty-state .icon-xl { color: var(--text-muted); margin-bottom: 16px; }
.empty-state .icon-xl.text-accent-primary { color: var(--accent-primary); }
.empty-state .icon-xl.text-accent-success { color: var(--accent-success); }
.empty-state .icon-xl.text-accent-warning,
.empty-state .icon-xl.text-warning { color: var(--accent-warning); }
.empty-state .icon-xl.text-accent-secondary { color: var(--accent-secondary); }

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.justify-end {
    justify-content: flex-end;
}

.items-center {
    align-items: center;
}

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

.btn-outline:hover {
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.btn.disabled,
.btn:disabled {
    opacity: 0.5;
    pointer-events: none;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    align-items: end;
}

.table-legend {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.card-body-flex {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.card-body-flex.between {
    justify-content: space-between;
}

.pill {
    border-radius: 999px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.inline-form {
    display: inline;
}

.landscape-intro {
    margin-bottom: 32px;
}

.landscape-section {
    margin-bottom: 40px;
}

.matrix-wrapper {
    overflow-x: auto;
    margin-top: 16px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
}

.matrix-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.matrix-table thead th {
    background: rgba(51, 65, 85, 0.6);
    position: sticky;
    top: 0;
    z-index: 1;
}

.matrix-table th,
.matrix-table td {
    padding: 10px 12px;
    text-align: center;
    border-bottom: 1px solid var(--border-light);
    border-right: 1px solid var(--border-light);
    font-size: 11px;
    white-space: normal;
}

.matrix-table th:first-child,
.matrix-table td:first-child {
    text-align: left;
    font-weight: 600;
    background: rgba(15, 23, 42, 0.4);
    position: sticky;
    left: 0;
    z-index: 2;
}

.matrix-table tr:last-child td {
    border-bottom: none;
}

.matrix-table th:last-child,
.matrix-table td:last-child {
    border-right: none;
}

.matrix-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 11px;
}

.matrix-cell .count {
    font-weight: 600;
    color: var(--accent-success);
}

.matrix-cell .requirements {
    font-size: 9px;
    color: var(--text-muted);
}

.matrix-cell.missing {
    color: var(--text-muted);
}

.matrix-summary {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 16px;
}

.matrix-summary .stat {
    flex: 1 1 180px;
    background: rgba(51, 65, 85, 0.5);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
}

.matrix-summary .label {
    font-size: 12px;
    color: var(--text-muted);
}

.matrix-summary .value {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.matrix-summary .subtext {
    font-size: 11px;
    color: var(--accent-secondary);
}

.card-message {
    color: var(--text-muted);
    padding: 16px;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    align-items: start;
}

.summary-card {
    text-align: center;
    padding: 16px;
    background: var(--background-elevated);
    border: 2px solid var(--border-light);
    border-radius: var(--radius);
}

.border-accent-warning { border-color: var(--accent-warning); }
.border-accent-success { border-color: var(--accent-success); }
.border-accent-primary { border-color: var(--accent-primary); }
.border-accent-info { border-color: var(--accent-secondary); }
.border-accent-error { border-color: var(--accent-error); }

.summary-card .summary-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.summary-card .summary-title {
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.summary-card .summary-text {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.3;
}

.summary-divider {
    font-size: 11px;
    color: var(--text-muted);
    margin: 6px 0;
}

.summary-pill {
    display: inline-flex;
    align-items: center;
    margin: 2px;
}

.summary-additional-list {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.summary-additional-item {
    margin-bottom: 2px;
}

.summary-empty {
    text-align: center;
    padding: 32px;
    color: var(--text-muted);
}

.summary-empty-icon {
    font-size: 24px;
    margin-bottom: 8px;
}

.pathway-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}

.pathway-nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
}

.pathway-nav-link:hover {
    color: var(--text-primary);
}

.pathway-nav-separator {
    color: var(--text-muted);
    opacity: 0.8;
}

.pathway-meta-grid {
    align-items: flex-start;
}

.pathway-source-summary {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
}

.requirement-params {
    font-size: 12px;
    max-width: 320px;
}

.requirement-param {
    margin-bottom: 4px;
}

.requirement-param-key {
    color: var(--text-muted);
    font-weight: 500;
    margin-right: 4px;
}

.requirement-param-value {
    color: var(--text-secondary);
}

.requirement-citation {
    font-size: 12px;
    max-width: 220px;
    color: var(--text-secondary);
}

.requirement-notes {
    max-width: 260px;
}

.requirement-notes-text {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.breadcrumbs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.breadcrumb-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(59, 130, 246, 0.08);
    color: var(--text-secondary);
    font-size: 13px;
    text-decoration: none;
    border: 1px solid transparent;
}

.breadcrumb-chip:hover {
    color: var(--text-primary);
    border-color: rgba(59, 130, 246, 0.3);
}

.breadcrumb-chip.active {
    background: var(--accent-primary);
    color: #fff;
}

/* Pathway Landscape Dashboard */
.coverage-overview {
    display: flex;
    flex-wrap: wrap;
    gap: 32px;
    justify-content: center;
}

.coverage-stat {
    text-align: center;
    min-width: 120px;
}

.coverage-number {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
}

.coverage-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pathway-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.pathway-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 16px;
    transition: all 0.2s ease;
}

.pathway-card:hover {
    border-color: var(--border-color);
    box-shadow: var(--shadow);
}

.pathway-card-common {
    border-left: 3px solid var(--accent-success);
}

.pathway-card-rare {
    border-left: 3px solid var(--accent-warning);
}

.pathway-card-empty {
    border-left: 3px solid var(--text-muted);
    opacity: 0.7;
}

.pathway-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.pathway-card-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.3;
}

.pathway-card-states {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.state-chip {
    display: inline-block;
    padding: 4px 8px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.15s ease;
}

.state-chip:hover {
    background: var(--accent-primary);
    color: #fff;
    transform: translateY(-1px);
}

.pathway-card-footer {
    padding-top: 8px;
    border-top: 1px solid var(--border-light);
}

.pathway-card-empty-msg {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 13px;
    padding: 12px 0;
}

.pathway-card-empty-msg i {
    font-size: 16px;
}