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

:root {
  --bg: #fafaf8;
  --bg-alt: #f0efeb;
  --text: #2c2c2c;
  --text-muted: #6b6b6b;
  --border: #d4d2cc;
  --accent: #1a5f7a;
  --accent-light: #e8f1f5;
  --add-bg: #e6ffec;
  --add-text: #1a7f37;
  --del-bg: #ffebe9;
  --del-text: #cf222e;
  --sidebar-w: 300px;
  --header-h: 52px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.55;
}

/* === Header === */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: #fff;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 12px;
  z-index: 100;
}

#site-title {
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

#site-subtitle {
  color: var(--text-muted);
  font-size: 13px;
  white-space: nowrap;
}

#site-experimental {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  color: #e8a030;
  border: 1px solid #e8a030;
  border-radius: 4px;
  padding: 2px 8px;
  white-space: nowrap;
}

.hackathon-note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-muted);
  border-left: 3px solid #e8a030;
  padding: 8px 14px;
  background: #fff8f0;
  border-radius: 0 4px 4px 0;
  line-height: 1.5;
}

#search-box {
  margin-left: auto;
  position: relative;
}

#search-input {
  width: 260px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: var(--bg);
  outline: none;
}

#search-input:focus {
  border-color: var(--accent);
  background: #fff;
}

#search-results {
  position: absolute;
  top: 100%;
  right: 0;
  width: 400px;
  max-height: 400px;
  overflow-y: auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  margin-top: 4px;
  z-index: 200;
}

#search-results.hidden { display: none; }

.search-group-label {
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.search-item {
  padding: 8px 12px;
  cursor: pointer;
  border-bottom: 1px solid var(--bg-alt);
  font-size: 14px;
}

.search-item:hover { background: var(--accent-light); }
.search-item .search-meta { color: var(--text-muted); font-size: 12px; }

/* === Layout === */
#app {
  display: flex;
  margin-top: var(--header-h);
  min-height: calc(100vh - var(--header-h));
}

#sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  border-right: 1px solid var(--border);
  background: #fff;
  overflow-y: auto;
  height: calc(100vh - var(--header-h));
  position: sticky;
  top: var(--header-h);
}

#sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

#sidebar-header h3 {
  font-size: 14px;
  font-weight: 600;
}

#sidebar-stats {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

#content {
  flex: 1;
  padding: 24px 32px;
  max-width: 960px;
  overflow-y: auto;
}

.view { display: block; }
.view.hidden { display: none; }

/* === Timeline === */
.era-group { margin-bottom: 4px; }

.era-label {
  padding: 8px 16px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent);
  background: var(--accent-light);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1;
}

.era-label .era-count {
  font-weight: 400;
  color: var(--text-muted);
}

.era-label:hover { background: #d4e8f0; }

.era-acts { overflow: hidden; }
.era-acts.collapsed { display: none; }

.timeline-item {
  padding: 6px 16px 6px 24px;
  cursor: pointer;
  font-size: 13px;
  border-left: 3px solid transparent;
  display: flex;
  gap: 8px;
  align-items: baseline;
}

.timeline-item:hover {
  background: var(--bg-alt);
}

.timeline-item.active {
  background: var(--accent-light);
  border-left-color: var(--accent);
}

.timeline-date {
  color: var(--text-muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  min-width: 36px;
}

.timeline-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* === Home View === */
.home-section {
  margin-bottom: 32px;
}

.home-section h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}

.home-section p {
  color: var(--text-muted);
  margin-bottom: 16px;
}

.era-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.era-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  cursor: pointer;
  transition: box-shadow 0.15s;
}

.era-card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.era-card .era-card-tag { font-weight: 700; color: var(--accent); font-size: 14px; }
.era-card .era-card-dates { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.era-card .era-card-count { font-size: 13px; margin-top: 8px; }

.bar-chart {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 2px 0;
}

.bar-row:hover { background: var(--bg-alt); }

.bar-label {
  width: 90px;
  font-size: 13px;
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bar-track {
  flex: 1;
  height: 20px;
  background: var(--bg-alt);
  border-radius: 3px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  min-width: 2px;
}

.bar-sparkline {
  width: 120px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.bar-sparkline .sparkline {
  display: block;
}

.bar-count {
  font-size: 12px;
  color: var(--text-muted);
  width: 24px;
}

/* === Decade Chart === */
.decade-chart {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.decade-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.decade-label {
  width: 60px;
  font-size: 13px;
  text-align: right;
  white-space: nowrap;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.decade-bars {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.decade-bar-group {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 14px;
}

.decade-bar {
  height: 100%;
  border-radius: 2px;
  min-width: 2px;
  transition: width 0.3s;
}

.decade-bar.acts-bar {
  background: var(--accent);
}

.decade-bar.sections-bar {
  background: var(--accent);
  opacity: 0.4;
}

.decade-val {
  font-size: 11px;
  color: var(--text-muted);
  min-width: 20px;
}

.decade-legend {
  display: flex;
  gap: 20px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.legend-swatch {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

.legend-swatch.acts-swatch {
  background: var(--accent);
}

.legend-swatch.sections-swatch {
  background: var(--accent);
  opacity: 0.4;
}

/* === Section List (home) === */
.section-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 6px;
}

.section-list-item {
  padding: 8px 12px;
  font-size: 13px;
  border: 1px solid var(--bg-alt);
  border-radius: 4px;
  cursor: pointer;
}

.section-list-item:hover { background: var(--accent-light); border-color: var(--border); }
.section-list-item .sec-num { font-weight: 600; }
.section-list-item .sec-title { color: var(--text-muted); }

/* === Act Detail View === */
.act-header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.act-header h1 {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.3;
}

.act-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.act-meta strong { color: var(--text); font-weight: 600; }

.act-summary {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.6;
}

.act-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
}

.act-nav a {
  font-size: 13px;
  color: var(--accent);
  text-decoration: none;
  cursor: pointer;
}

.act-nav a:hover { text-decoration: underline; }

.sections-affected {
  margin: 16px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.section-chip {
  display: inline-block;
  padding: 3px 10px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 12px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
}

.section-chip:hover { background: #d4e8f0; }

/* === Diff Display === */
.diff-file {
  margin-bottom: 20px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.diff-file-header {
  padding: 8px 12px;
  background: var(--bg-alt);
  font-size: 13px;
  font-weight: 600;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  border-bottom: 1px solid var(--border);
}

.diff-hunk { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }

.diff-line {
  padding: 1px 12px;
  white-space: pre-wrap;
  word-break: break-all;
}

.diff-line.add { background: var(--add-bg); color: var(--add-text); }
.diff-line.del { background: var(--del-bg); color: var(--del-text); }
.diff-line.ctx { color: var(--text-muted); }

.diff-line .line-prefix {
  display: inline-block;
  width: 16px;
  user-select: none;
  color: inherit;
  opacity: 0.6;
}

/* === Section Viewer === */
.section-header {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.section-header h1 { font-size: 22px; font-weight: 600; }
.section-header .section-title-line { color: var(--text-muted); font-size: 14px; margin-top: 4px; }

.version-selector {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding: 12px 16px;
  background: var(--bg-alt);
  border-radius: 6px;
}

.version-selector label { font-size: 13px; font-weight: 600; white-space: nowrap; }

.version-selector select {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 13px;
  background: #fff;
  max-width: 400px;
}

.version-selector .compare-btn {
  padding: 6px 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}

.version-selector .compare-btn:hover { opacity: 0.9; }

.version-selector .cite-btn {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.version-selector .cite-btn:hover {
  background: var(--accent-light);
  opacity: 1;
}

.statute-text {
  font-family: "Georgia", "Times New Roman", serif;
  font-size: 15px;
  line-height: 1.75;
  white-space: pre-wrap;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.amendment-history {
  margin-top: 24px;
}

.amendment-history h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.amendment-list {
  list-style: none;
}

.amendment-list li {
  padding: 6px 0;
  font-size: 14px;
  border-bottom: 1px solid var(--bg-alt);
  display: flex;
  gap: 8px;
  align-items: baseline;
}

.amendment-list li a {
  color: var(--accent);
  text-decoration: none;
}

.amendment-list li a:hover { text-decoration: underline; }

.amendment-list .amend-marker {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  margin-top: 6px;
}

/* === Compare View === */
.compare-header {
  margin-bottom: 16px;
}

.compare-header h1 { font-size: 20px; font-weight: 600; }

.compare-selectors {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}

.compare-selectors .compare-side {
  flex: 1;
}

.compare-selectors label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.compare-selectors select {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 13px;
}

.compare-panes {
  display: flex;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.compare-pane {
  flex: 1;
  overflow-x: auto;
}

.compare-pane-header {
  padding: 6px 12px;
  background: var(--bg-alt);
  font-size: 12px;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}

.compare-pane pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  line-height: 1.6;
  padding: 12px;
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.compare-pane .word-add {
  background: var(--add-bg);
  color: var(--add-text);
  border-radius: 2px;
  padding: 0 1px;
}

.compare-pane .word-del {
  background: var(--del-bg);
  color: var(--del-text);
  border-radius: 2px;
  padding: 0 1px;
}

/* === Ramseyer (inline redline) === */

/* Enhanced mode (default): colored backgrounds */
.ramseyer-del {
  background: var(--del-bg);
  color: var(--del-text);
  text-decoration: line-through;
  border-radius: 2px;
  padding: 0 1px;
}

.ramseyer-ins {
  background: var(--add-bg);
  color: var(--add-text);
  text-decoration: underline;
  font-style: italic;
  border-radius: 2px;
  padding: 0 1px;
}

/* Strict congressional mode: black brackets + italic, per House Rule XIII clause 3(e) */
.ramseyer-strict .ramseyer-del {
  background: none;
  color: inherit;
  text-decoration: none !important;
  padding: 0;
}

.ramseyer-strict .ramseyer-del::before {
  content: "[";
  font-weight: bold;
}

.ramseyer-strict .ramseyer-del::after {
  content: "]";
  font-weight: bold;
}

.ramseyer-strict .ramseyer-ins {
  background: none;
  color: inherit;
  text-decoration: none;
  font-style: italic;
  padding: 0;
}

.ramseyer-legend {
  display: flex;
  gap: 20px;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.ramseyer-style-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  font-size: 13px;
}

.ramseyer-style-toggle button {
  padding: 4px 12px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-muted);
}

.ramseyer-style-toggle button.active {
  background: var(--accent);
  color: #fff;
}

/* === Point-in-Time View === */
.asof-header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.asof-header h1 { font-size: 22px; font-weight: 600; }
.asof-desc { color: var(--text-muted); font-size: 14px; margin-top: 4px; }

.asof-picker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
}

.asof-picker label { font-size: 13px; font-weight: 600; }

.asof-picker input[type="date"] {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 14px;
  background: #fff;
}

.asof-context {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.asof-context a { color: var(--accent); text-decoration: none; }
.asof-context a:hover { text-decoration: underline; }
.asof-context-date { color: var(--text-muted); font-size: 13px; }

.asof-link {
  display: inline-block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.asof-link:hover { text-decoration: underline; }

.asof-sections {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.asof-section {
  border: 1px solid var(--bg-alt);
  border-radius: 4px;
}

.asof-section-header {
  display: flex;
  gap: 8px;
  align-items: baseline;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 14px;
}

.asof-section-header:hover { background: var(--accent-light); }

.asof-toggle {
  width: 16px;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.asof-sec-num { font-weight: 600; white-space: nowrap; }
.asof-sec-title { color: var(--text-muted); }

.asof-section-body {
  padding: 0 12px 12px 36px;
}

.asof-section-body.hidden { display: none; }

.asof-loading { color: var(--text-muted); font-size: 13px; }
.asof-no-text { color: var(--text-muted); font-size: 13px; font-style: italic; }

.asof-version-info {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.asof-version-info a { color: var(--accent); text-decoration: none; }
.asof-version-info a:hover { text-decoration: underline; }

.asof-text {
  font-size: 14px;
  padding: 12px;
  max-height: 400px;
  overflow-y: auto;
}

/* === Responsive === */
@media (max-width: 768px) {
  #sidebar { display: none; }
  #content { padding: 16px; }
  #site-subtitle { display: none; }
  #search-input { width: 180px; }
  #search-results { width: 300px; }
  .compare-panes { flex-direction: column; }
}