/* ==========================================================================
   GRC Portfolio — Base Stylesheet v1.0
   Shared design tokens + canonical component styles for all SPA repos.

   Usage: Copy this file into each SPA repo and import BEFORE repo-specific styles.
   Or: <link rel="stylesheet" href="base.css"> before <link rel="stylesheet" href="style.css">

   Each repo's style.css should ONLY contain:
   - Domain color variables (--domain-*)
   - Repo-specific component overrides
   - Repo-specific views not covered here
   ========================================================================== */

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

/* ---------- Typography ---------- */
:root {
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.8125rem;
  --font-size-base: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
}

/* ---------- Light Mode Tokens ---------- */
:root {
  --bg: #F8FAFC;
  --surface: #FFFFFF;
  --surface-hover: #F1F5F9;
  --border: #E2E8F0;
  --border-strong: #CBD5E1;

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;

  --accent: #2563EB;
  --accent-hover: #1D4ED8;
  --accent-light: #DBEAFE;

  --success: #16A34A;
  --success-light: #DCFCE7;
  --warning: #D97706;
  --warning-light: #FEF3C7;
  --danger: #DC2626;
  --danger-light: #FEE2E2;
  --info: #0284C7;
  --info-light: #E0F2FE;

  --type-preventive: #7C3AED;
  --type-detective: #0284C7;
  --type-corrective: #D97706;

  --maturity-basic-bg: #FEF3C7;
  --maturity-basic-border: #F59E0B;
  --maturity-mature-bg: #DBEAFE;
  --maturity-mature-border: #3B82F6;
  --maturity-advanced-bg: #DCFCE7;
  --maturity-advanced-border: #16A34A;

  --evidence-good: #16A34A;
  --evidence-good-bg: #F0FDF4;
  --evidence-gap: #DC2626;
  --evidence-gap-bg: #FEF2F2;

  --similarity-high: #16A34A;
  --similarity-medium: #D97706;
  --similarity-low: #DC2626;

  --source-official: #16A34A;
  --source-paraphrased: #D97706;
  --source-indicative: #94A3B8;

  --max-w: 1280px;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-lg: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
}

/* ---------- Dark Mode Tokens ---------- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0F172A;
    --surface: #1E293B;
    --surface-hover: #334155;
    --border: #334155;
    --border-strong: #475569;

    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-muted: #64748B;

    --accent: #60A5FA;
    --accent-hover: #93C5FD;
    --accent-light: #1E3A5F;

    --success: #4ADE80;
    --success-light: #14532D;
    --warning: #FBBF24;
    --warning-light: #422006;
    --danger: #F87171;
    --danger-light: #450A0A;
    --info: #38BDF8;
    --info-light: #0C4A6E;

    --maturity-basic-bg: #422006;
    --maturity-basic-border: #FBBF24;
    --maturity-mature-bg: #1E3A5F;
    --maturity-mature-border: #60A5FA;
    --maturity-advanced-bg: #14532D;
    --maturity-advanced-border: #4ADE80;

    --evidence-good: #4ADE80;
    --evidence-good-bg: #14532D;
    --evidence-gap: #F87171;
    --evidence-gap-bg: #450A0A;

    --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
    --shadow-lg: 0 4px 6px rgba(0,0,0,0.35), 0 2px 4px rgba(0,0,0,0.2);
  }
}

/* ---------- Base ---------- */
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
code, pre { font-family: var(--font-mono); font-size: var(--font-size-sm); }

/* ---------- Layout ---------- */
#app { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }

@media (max-width: 640px) {
  #app { padding: 0 1rem; }
}

/* ---------- Header ---------- */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  gap: 1rem;
}
.header-brand {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}
.header-brand:hover { text-decoration: none; }

/* ---------- Search ---------- */
.search-bar { flex: 1; max-width: 400px; }
.search-bar input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-family: var(--font-sans);
}
.search-bar input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: var(--accent);
}
.search-bar input::placeholder { color: var(--text-muted); }

/* ---------- Navigation (5 primary tabs) ---------- */
.nav {
  display: flex;
  gap: 0.25rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.nav-link {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius);
  white-space: nowrap;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.nav-link:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
  text-decoration: none;
}
.nav-link.active {
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 600;
}

/* ---------- Sub-Tabs (inside primary views) ---------- */
.sub-tabs {
  display: flex;
  gap: 0.25rem;
  padding: 0.5rem 0;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.sub-tab {
  padding: 0.375rem 0.75rem;
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--text-secondary);
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  font-family: var(--font-sans);
  transition: background 0.15s, color 0.15s;
}
.sub-tab:hover { background: var(--surface-hover); color: var(--text-primary); }
.sub-tab.active {
  background: var(--surface);
  color: var(--accent);
  border-color: var(--border);
  font-weight: 600;
}
.sub-panel { display: none; }
.sub-panel.active { display: block; }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 0 0.5rem;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}
.breadcrumbs a { color: var(--accent); }
.breadcrumbs .sep { color: var(--text-muted); }
.breadcrumbs .current { color: var(--text-primary); font-weight: 500; }

/* ---------- Badge System ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: 9999px;
  white-space: nowrap;
  line-height: 1.6;
}
.badge-domain {
  background: color-mix(in srgb, var(--domain-color, var(--accent)) 12%, transparent);
  color: var(--domain-color, var(--accent));
  border: 1px solid color-mix(in srgb, var(--domain-color, var(--accent)) 25%, transparent);
}
.badge-type-preventive { background: #F3E8FF; color: var(--type-preventive); }
.badge-type-detective  { background: var(--info-light); color: var(--type-detective); }
.badge-type-corrective { background: var(--warning-light); color: var(--type-corrective); }
.badge-mandatory { background: var(--danger-light); color: var(--danger); }
.badge-optional  { background: var(--surface-hover); color: var(--text-muted); }
.badge-artifacts { background: var(--accent-light); color: var(--accent); }
.badge-evidence  { background: var(--success-light); color: var(--success); }
.badge-category  { background: var(--surface-hover); color: var(--text-secondary); border: 1px solid var(--border); }
.badge-similarity-high   { background: var(--success-light); color: var(--similarity-high); }
.badge-similarity-medium { background: var(--warning-light); color: var(--similarity-medium); }
.badge-similarity-low    { background: var(--danger-light); color: var(--similarity-low); }
.badge-source-official    { background: var(--success-light); color: var(--source-official); }
.badge-source-paraphrased { background: var(--warning-light); color: var(--source-paraphrased); }
.badge-source-indicative  { background: var(--surface-hover); color: var(--source-indicative); }

@media (prefers-color-scheme: dark) {
  .badge-type-preventive { background: #2E1065; }
}

/* ---------- Control Grid ---------- */
.control-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}
.control-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  cursor: pointer;
  transition: box-shadow 0.15s, border-color 0.15s;
}
.control-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}
.control-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.control-id {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  font-weight: 500;
}
.control-card-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}
.control-card-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.control-card-meta { display: flex; flex-wrap: wrap; gap: 0.375rem; }

/* ---------- Control Detail ---------- */
.control-detail { padding: 1rem 0 3rem; }
.control-detail-header { margin-bottom: 1.5rem; }
.control-detail-id-row { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; }
.control-detail-title { font-size: var(--font-size-xl); font-weight: 700; margin-bottom: 0.5rem; }
.control-detail-desc { color: var(--text-secondary); line-height: 1.7; }

.detail-section { margin-bottom: 2rem; }
.detail-section-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.activity-list { list-style: none; padding: 0; }
.activity-list li {
  padding: 0.375rem 0 0.375rem 1.25rem;
  position: relative;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}
.activity-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.75rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- Requirements Grid ---------- */
.requirements-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.requirement-block {
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid;
}
.requirement-block ul { padding-left: 1.25rem; font-size: var(--font-size-sm); color: var(--text-secondary); }
.requirement-block li { margin-bottom: 0.375rem; line-height: 1.5; }
.requirement-block-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}
.requirement-legal { background: var(--info-light); border-color: var(--info); }
.requirement-legal .requirement-block-label { color: var(--info); }
.requirement-technical { background: var(--warning-light); border-color: var(--warning); }
.requirement-technical .requirement-block-label { color: var(--warning); }
.requirement-governance { background: var(--accent-light); border-color: var(--accent); }
.requirement-governance .requirement-block-label { color: var(--accent); }

@media (max-width: 640px) {
  .requirements-grid { grid-template-columns: 1fr; }
}

/* ---------- Maturity Grid ---------- */
.maturity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.maturity-card {
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid;
}
.maturity-card p { font-size: var(--font-size-sm); color: var(--text-secondary); margin-top: 0.5rem; }
.maturity-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.maturity-basic    { background: var(--maturity-basic-bg); border-color: var(--maturity-basic-border); }
.maturity-basic .maturity-label { color: var(--maturity-basic-border); }
.maturity-mature   { background: var(--maturity-mature-bg); border-color: var(--maturity-mature-border); }
.maturity-mature .maturity-label { color: var(--maturity-mature-border); }
.maturity-advanced { background: var(--maturity-advanced-bg); border-color: var(--maturity-advanced-border); }
.maturity-advanced .maturity-label { color: var(--maturity-advanced-border); }

@media (max-width: 640px) {
  .maturity-grid { grid-template-columns: 1fr; }
}

/* ---------- Audit Package ---------- */
.audit-package {
  background: var(--surface);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.audit-package-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}
.audit-package-counts { display: flex; gap: 0.5rem; }

/* ---------- Artifact Card ---------- */
.artifact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 0.75rem;
}
.artifact-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.375rem;
}
.artifact-card-name { font-weight: 600; font-size: var(--font-size-base); color: var(--text-primary); }
.artifact-card-badges { display: flex; gap: 0.375rem; flex-shrink: 0; }
.artifact-card-desc { font-size: var(--font-size-sm); color: var(--text-secondary); margin-bottom: 0.5rem; }
.artifact-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.meta-item strong { color: var(--text-secondary); }
.artifact-card-contents { font-size: var(--font-size-sm); }
.artifact-card-contents strong { display: block; margin-bottom: 0.25rem; color: var(--text-secondary); }
.artifact-card-contents ul { padding-left: 1.25rem; color: var(--text-secondary); }
.artifact-card-contents li { margin-bottom: 0.125rem; }

/* ---------- Evidence Item ---------- */
.evidence-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 0.75rem;
}
.evidence-item-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.375rem;
}
.evidence-id {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}
.evidence-item-name { font-weight: 600; font-size: var(--font-size-base); color: var(--text-primary); }
.evidence-item-desc { font-size: var(--font-size-sm); color: var(--text-secondary); margin-bottom: 0.75rem; }

.evidence-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 0.75rem;
}
.evidence-block {
  padding: 0.75rem;
  border-radius: var(--radius-sm);
}
.evidence-block-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}
.evidence-good { background: var(--evidence-good-bg); }
.evidence-good .evidence-block-label { color: var(--evidence-good); }
.evidence-good ul { color: var(--text-secondary); }
.evidence-gap { background: var(--evidence-gap-bg); }
.evidence-gap .evidence-block-label { color: var(--evidence-gap); }
.evidence-gap ul { color: var(--text-secondary); }
.evidence-block ul { padding-left: 1.25rem; font-size: var(--font-size-sm); }
.evidence-block li { margin-bottom: 0.25rem; }
.evidence-item-meta {
  display: flex;
  gap: 0.75rem;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .evidence-detail-grid { grid-template-columns: 1fr; }
}

/* ---------- Framework Mappings ---------- */
.fw-mappings { display: flex; flex-direction: column; gap: 0.5rem; }
.fw-mapping-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.375rem 0;
  font-size: var(--font-size-sm);
}
.fw-label {
  font-weight: 600;
  color: var(--text-secondary);
  min-width: 120px;
  flex-shrink: 0;
}
.fw-codes {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--accent);
}

.xref-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
}
.xref-source { font-weight: 600; font-size: var(--font-size-sm); }
.xref-target { font-size: var(--font-size-sm); color: var(--text-secondary); }

/* ---------- Source Provision Links ---------- */
.provision-links { display: flex; flex-direction: column; gap: 0.5rem; }
.provision-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: border-color 0.15s;
}
.provision-link:hover { border-color: var(--accent); text-decoration: none; }
.provision-id {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
}
.provision-title { font-size: var(--font-size-sm); color: var(--text-secondary); }

/* ---------- Accordion ---------- */
.accordion { margin-bottom: 0.5rem; }
.accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  overflow: hidden;
}
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--surface);
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s;
}
.accordion-trigger:hover { background: var(--surface-hover); }
.accordion-icon {
  font-size: var(--font-size-xs);
  transition: transform 0.2s;
  color: var(--text-muted);
}
.accordion-trigger[aria-expanded="true"] .accordion-icon { transform: rotate(180deg); }
.accordion-content { padding: 0 1rem 1rem; }

/* ---------- Domain Filter ---------- */
.domain-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 1rem;
}
.domain-pill {
  padding: 0.25rem 0.75rem;
  font-size: var(--font-size-xs);
  font-weight: 500;
  font-family: var(--font-sans);
  border: 1px solid var(--border);
  border-radius: 9999px;
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.domain-pill:hover { border-color: var(--accent); color: var(--accent); }
.domain-pill.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* ---------- Export Buttons ---------- */
.nav-actions { display: flex; gap: 0.5rem; margin-left: auto; }
.btn-export {
  padding: 0.375rem 0.75rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  font-family: var(--font-sans);
  color: var(--text-secondary);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.btn-export:hover { background: var(--surface-hover); color: var(--text-primary); }

/* ---------- Loading / Error / Empty States ---------- */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
  gap: 1rem;
}
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
}
.error-state h2 { color: var(--danger); margin-bottom: 0.5rem; }
.error-message {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--danger);
  margin-bottom: 1rem;
}
.error-state button {
  padding: 0.5rem 1.5rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font-sans);
  font-weight: 600;
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
}
.empty-state-text { color: var(--text-muted); font-size: var(--font-size-sm); }

/* ---------- Scroll Hint for Nav Overflow ---------- */
@media (max-width: 1024px) {
  .nav-inner {
    -webkit-mask-image: linear-gradient(to right, black calc(100% - 2rem), transparent);
    mask-image: linear-gradient(to right, black calc(100% - 2rem), transparent);
  }
}

/* ---------- Keyboard Focus Indicators (WCAG 2.1 AA) ---------- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Footer ---------- */
.app-footer {
  padding: 1rem 1.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  text-align: center;
}

/* ---------- Noscript Fallback ---------- */
noscript {
  display: block;
  padding: 2rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: var(--font-size-md);
}