/* ==========================================================================
   Agenda Memo Validator — Presentation Layer
   PASCO government/enterprise review workspace

   No framework. No CDN. No build step. Restrained design tokens only.
   ========================================================================== */

/* ==========================================================================
   1. Design tokens
   ========================================================================== */
:root {
  /* Palette */
  --color-primary:           #1e4d8c;
  --color-primary-hover:     #173a6b;
  --color-primary-subtle:    #eef3f9;
  --color-surface:           #ffffff;
  --color-surface-subtle:    #f4f6f9;
  --color-border:            #d5dae2;
  --color-border-strong:     #b8c0cc;

  --color-text:              #1a1f2b;
  --color-text-muted:        #5b6472;
  --color-text-faint:        #8a93a1;

  --color-success:           #1f6d3e;
  --color-success-subtle:    #e8f2ec;
  --color-warning:           #9a5b00;
  --color-warning-subtle:    #fbf1e0;
  --color-danger:            #a3241b;
  --color-danger-subtle:     #fbe9e7;

  --color-deterministic:     #1e4d8c;
  --color-deterministic-bg:  #eef3f9;
  --color-ai:                #5a3a8c;
  --color-ai-bg:             #f1ecf9;
  --color-hybrid:            #0f6a68;
  --color-hybrid-bg:         #e6f2f1;

  /* Spacing scale */
  --sp-1:  4px;
  --sp-2:  8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 6px;

  /* Shadow */
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04);

  /* Type */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ==========================================================================
   2. Base
   ========================================================================== */
* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  background: var(--color-surface-subtle);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

h1, h2, h3 { margin: 0; }

/* ==========================================================================
   3. Layout
   ========================================================================== */
.app-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 14px var(--sp-5);
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  min-height: 68px;
}

.app-header .brand {
  display: flex;
  flex-direction: column;
}

.app-header .brand .app-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.app-header .brand .app-subtitle {
  font-size: 12.5px;
  color: var(--color-text-muted);
  margin-top: 1px;
}

.app-header .nav {
  display: flex;
  gap: var(--sp-4);
  margin-left: auto;
}

.app-header .nav a {
  color: var(--color-text-muted);
  font-size: 14px;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.app-header .nav a:hover {
  color: var(--color-text);
  text-decoration: none;
}
.app-header .nav a.active {
  color: var(--color-text);
  border-bottom-color: var(--color-primary);
}

.app-header .env-pill {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
}

.app-main {
  max-width: 1080px;
  margin: 0 auto;
  padding: var(--sp-5);
}

.page-header {
  margin-bottom: var(--sp-5);
}
.page-header h1 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-1);
}
.page-header .subtitle {
  font-size: 14px;
  color: var(--color-text-muted);
  max-width: 720px;
}

/* ==========================================================================
   4. Panels & cards
   ========================================================================== */
.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-4) var(--sp-4) var(--sp-4) var(--sp-4);
  margin-bottom: var(--sp-4);
  box-shadow: var(--shadow-card);
}

.panel-heading {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin: 0 0 var(--sp-3) 0;
}

.panel h2 {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin: 0 0 var(--sp-3) 0;
}

/* ==========================================================================
   5. Summary cards (dashboard)
   ========================================================================== */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--sp-3);
}

.summary-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  box-shadow: var(--shadow-card);
}

.summary-card .label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-2);
}

.summary-card .value {
  font-size: 26px;
  font-weight: 600;
  line-height: 1;
  color: var(--color-text);
}

.summary-card.is-potential-issue { border-left: 3px solid var(--color-warning); }
.summary-card.is-accepted        { border-left: 3px solid var(--color-success); }
.summary-card.is-not-an-issue    { border-left: 3px solid var(--color-text-faint); }
.summary-card.is-needs-review    { border-left: 3px solid var(--color-danger); }

.origin-row {
  display: flex;
  gap: var(--sp-3);
  margin-top: var(--sp-4);
  flex-wrap: wrap;
  align-items: center;
}

.origin-row .origin-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-right: var(--sp-2);
}

.origin-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 13px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.origin-chip .dot {
  width: 8px; height: 8px; border-radius: 50%;
  display: inline-block;
}
.origin-chip.deterministic .dot { background: var(--color-deterministic); }
.origin-chip.ai            .dot { background: var(--color-ai); }
.origin-chip.hybrid        .dot { background: var(--color-hybrid); }

/* ==========================================================================
   6. Buttons & controls
   ========================================================================== */
button, .btn {
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  background: var(--color-primary);
  color: #fff;
  border: 1px solid var(--color-primary);
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease;
}
button:hover, .btn:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}
button.secondary, .btn.secondary {
  background: var(--color-surface);
  color: var(--color-primary);
  border: 1px solid var(--color-border-strong);
}
button.secondary:hover, .btn.secondary:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
}
button:disabled {
  background: var(--color-border);
  border-color: var(--color-border);
  color: var(--color-text-faint);
  cursor: not-allowed;
}

.controls {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: var(--sp-4);
}
.controls label {
  font-size: 13px;
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}

select, input[type="text"], textarea {
  font: inherit;
  font-size: 14px;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
}
select:focus, input[type="text"]:focus, textarea:focus {
  border-color: var(--color-primary);
}

textarea { width: 100%; min-height: 64px; resize: vertical; }

/* ==========================================================================
   7. Badges
   ========================================================================== */
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  color: #fff;
  vertical-align: middle;
}

.badge.deterministic { background: var(--color-deterministic); }
.badge.ai            { background: var(--color-ai); }
.badge.hybrid        { background: var(--color-hybrid); }
.badge.stale         { background: var(--color-danger); margin-left: var(--sp-2); }

.badge.status-potential_issue { background: var(--color-warning); }
.badge.status-accepted        { background: var(--color-success); }
.badge.status-not_an_issue    { background: var(--color-text-faint); }
.badge.status-needs_review    { background: var(--color-danger); }
.badge.status-created         { background: var(--color-text-faint); }

.badge.origin-label { letter-spacing: 0.06em; }

/* ==========================================================================
   8. Review list
   ========================================================================== */
.review-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  margin-bottom: var(--sp-3);
  box-shadow: var(--shadow-card);
  transition: border-color 0.12s ease, background 0.12s ease;
  color: var(--color-text);
}
.review-card:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
  text-decoration: none;
}
.review-card .top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-3);
  margin-bottom: var(--sp-2);
}
.review-card .title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}
.review-card .meta {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-2);
}
.review-card .bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  font-size: 13px;
  color: var(--color-text-muted);
}
.review-card .open-link {
  font-weight: 600;
  color: var(--color-primary);
}

/* ==========================================================================
   9. Findings list cards
   ========================================================================== */
.finding-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  margin-bottom: var(--sp-3);
  box-shadow: var(--shadow-card);
}

.finding-card .top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-3);
}

.finding-card .headline {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--sp-2);
  color: var(--color-text);
}

.finding-card .summary {
  color: var(--color-text-muted);
  font-size: 14px;
  margin-bottom: var(--sp-3);
}

.finding-card .compare-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
}

.finding-card .compare-cell {
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--sp-3);
}
.finding-card .compare-cell .label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-1);
}
.finding-card .compare-cell .value {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}
.finding-card .compare-cell.is-authoritative {
  border-left: 3px solid var(--color-deterministic);
}
.finding-card .compare-cell.is-conflicting {
  border-left: 3px solid var(--color-warning);
}

.finding-card .footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text-muted);
}
.finding-card .footer .open-link {
  font-weight: 600;
  color: var(--color-primary);
}

/* ==========================================================================
   10. Finding detail — hero screen
   ========================================================================== */
.finding-hero {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-5);
  margin-bottom: var(--sp-4);
  box-shadow: var(--shadow-card);
}

.finding-hero .hero-badges {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
}
.finding-hero .hero-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-3);
  color: var(--color-text);
}
.finding-hero .hero-meta {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--color-text-muted);
}
.finding-hero .hero-meta strong {
  color: var(--color-text);
  font-weight: 600;
}

/* Deterministic comparison: hero block */
.compare-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
  margin-top: var(--sp-4);
}
.compare-hero .cell {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
}
.compare-hero .cell.is-authoritative {
  border-left: 4px solid var(--color-deterministic);
  background: var(--color-deterministic-bg);
}
.compare-hero .cell.is-conflicting {
  border-left: 4px solid var(--color-warning);
  background: var(--color-warning-subtle);
}
.compare-hero .label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-2);
}
.compare-hero .value {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
}
.compare-hero .note {
  font-size: 12.5px;
  color: var(--color-text-muted);
  margin-top: var(--sp-2);
}

/* AI observation block */
.ai-block {
  background: var(--color-ai-bg);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-ai);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  margin-bottom: var(--sp-4);
}
.ai-block .ai-heading {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ai);
  margin-bottom: var(--sp-2);
}
.ai-block .ai-sub {
  font-size: 12.5px;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-3);
}
.ai-block .ai-summary {
  font-size: 15px;
  color: var(--color-text);
  margin-bottom: var(--sp-3);
}
.ai-block .ai-meta {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-3);
}
.ai-block button.secondary {
  background: var(--color-surface);
  border-color: var(--color-ai);
  color: var(--color-ai);
}

#ai-explanation {
  margin-top: var(--sp-3);
}

/* ==========================================================================
   11. Evidence list
   ========================================================================== */
.evidence-row {
  border-top: 1px solid var(--color-border);
  padding: var(--sp-4) 0;
}
.evidence-row:first-child { border-top: 0; padding-top: 0; }

.evidence-row .src-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  margin-bottom: var(--sp-2);
}
.evidence-row .src-doc {
  font-size: 13px;
  color: var(--color-text);
}
.evidence-row .src-doc .doc-role {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-right: var(--sp-2);
}
.evidence-row .src-doc .filename {
  font-weight: 600;
  color: var(--color-text);
}
.evidence-row .src-doc .page {
  color: var(--color-text-muted);
  margin-left: var(--sp-2);
}

.evidence-row .quote {
  font-family: var(--font-mono);
  font-size: 13.5px;
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  padding: var(--sp-3);
  border-radius: var(--radius-sm);
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--color-text);
}

.evidence-row .meta-line {
  margin-top: var(--sp-2);
  font-size: 12px;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

/* ==========================================================================
   12. Source refs
   ========================================================================== */
.source-refs {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: var(--sp-2) var(--sp-4);
  font-size: 13px;
}
.source-refs .ref-type {
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 11px;
  align-self: center;
}
.source-refs .ref-value {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--color-text);
  word-break: break-all;
}
.source-refs .ref-value.stale {
  color: var(--color-danger);
}

/* ==========================================================================
   13. Decision history & form
   ========================================================================== */
.decision-list { display: flex; flex-direction: column; gap: var(--sp-3); }
.decision-item {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: var(--sp-3);
  padding: var(--sp-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}
.decision-item .check {
  width: 24px; height: 24px; line-height: 24px;
  text-align: center;
  border-radius: 50%;
  font-weight: 700;
  font-size: 13px;
  background: var(--color-success-subtle);
  color: var(--color-success);
}
.decision-item.is-not_an_issue .check { background: var(--color-surface-subtle); color: var(--color-text-muted); }
.decision-item.is-needs_review .check { background: var(--color-danger-subtle); color: var(--color-danger); }
.decision-item .row-1 {
  display: flex;
  gap: var(--sp-3);
  align-items: center;
  flex-wrap: wrap;
}
.decision-item .row-1 .who { font-weight: 600; color: var(--color-text); }
.decision-item .row-1 .when { color: var(--color-text-muted); font-size: 13px; }
.decision-item .comment {
  margin-top: var(--sp-2);
  color: var(--color-text);
  font-size: 14px;
}
.decision-item .comment::before { content: "\201C"; }
.decision-item .comment::after  { content: "\201D"; }

.decision-form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  max-width: 620px;
}
.decision-form .field { display: flex; flex-direction: column; gap: var(--sp-1); }
.decision-form .field > label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}
.decision-form .radio-row {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  padding: var(--sp-2) 0;
}
.decision-form .radio-row label {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  font-size: 14px;
  color: var(--color-text);
  text-transform: none;
  letter-spacing: normal;
  font-weight: 500;
}
.decision-form input[type="radio"] {
  accent-color: var(--color-primary);
}

/* ==========================================================================
   14. Messages
   ========================================================================== */
.message { font-size: 14px; }
.message.muted   { color: var(--color-text-muted); }
.message.error   { color: var(--color-danger); }
.message.success { color: var(--color-success); }

/* ==========================================================================
   15. Demo pipeline
   ========================================================================== */
.pipeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
}
.pipeline-step {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}
.pipeline-step:hover:not(.is-disabled) {
  border-color: var(--color-primary);
}
.pipeline-step.is-disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.pipeline-step .step-no {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-1);
}
.pipeline-step .step-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--sp-2);
}
.pipeline-step .step-state {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.pipeline-step.is-complete { border-left: 4px solid var(--color-success); }
.pipeline-step.is-complete .step-state { color: var(--color-success); }
.pipeline-step.is-available { border-left: 4px solid var(--color-primary); }
.pipeline-step.is-available .step-state { color: var(--color-primary); }
.pipeline-step.is-pending  { border-left: 4px solid var(--color-border-strong); }
.pipeline-step.is-pending  .step-state { color: var(--color-text-faint); }

.review-banner {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--color-text-muted);
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-3) var(--sp-4);
  margin-bottom: var(--sp-4);
}
.review-banner strong { color: var(--color-text); font-weight: 600; }

details.state-details {
  margin-top: var(--sp-3);
}
details.state-details summary {
  cursor: pointer;
  font-size: 13px;
  color: var(--color-text-muted);
}
details.state-details pre {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--sp-3);
  overflow: auto;
  color: var(--color-text);
}

/* ==========================================================================
   16. Pre-expand (AI explanation)
   ========================================================================== */
pre.pre-expand {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--sp-3);
  font-family: var(--font-mono);
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--color-text);
}

/* ==========================================================================
   17. Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pipeline { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .app-header {
    padding: var(--sp-3) var(--sp-4);
    flex-wrap: wrap;
    gap: var(--sp-2);
  }
  .app-header .nav { margin-left: 0; width: 100%; }
  .app-main { padding: var(--sp-4); }
  .summary-grid { grid-template-columns: 1fr; }
  .compare-hero { grid-template-columns: 1fr; }
  .finding-card .compare-row { grid-template-columns: 1fr; }
  .pipeline { grid-template-columns: 1fr; }
  .source-refs { grid-template-columns: 1fr; }
  .finding-hero .hero-title { font-size: 19px; }
  .compare-hero .value { font-size: 20px; }
}