/* ============================================
   Energy Incident Register - Shared Styles
   Deliberately understated. Research-paper feel.
   v2.3 - 4-up charts grid
   ============================================ */

:root {
  --bg: #fafaf7;
  --surface: #ffffff;
  --text: #1a1a1a;
  --text-muted: #5a5a5a;
  --text-soft: #8a8a8a;
  --border: #e5e2d9;
  --border-strong: #d0ccbf;
  --accent: #0c5c5c;
  --accent-hover: #0a4848;
  --accent-soft: #e8f0ee;
  --warning: #8a4a00;
  --warning-bg: #fdf6e8;
  --max-width: 880px;
  --max-width-wide: 1100px;
}

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

html {
  font-size: 17px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  font-feature-settings: "ss01", "ss02";
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== HEADER ===== */
header.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}

header.site-header .inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

header.site-header a.brand {
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

header.site-header a.brand .accent-mark {
  color: var(--accent);
}

header.site-header nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

header.site-header nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

header.site-header nav a:hover,
header.site-header nav a.active {
  color: var(--accent);
}

/* ===== MAIN ===== */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

main.wide {
  max-width: var(--max-width-wide);
}

h1 {
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--text);
}

h2 {
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

p {
  margin-bottom: 1rem;
  color: var(--text);
}

p.lead {
  font-size: 1.15rem;
  line-height: 1.55;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 640px;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent-hover);
}

ul, ol {
  margin: 0 0 1.25rem 1.25rem;
  padding: 0;
}

li {
  margin-bottom: 0.4rem;
  color: var(--text);
}

li::marker {
  color: var(--accent);
}

strong {
  font-weight: 600;
}

/* ===== DASHBOARD ===== */
.dashboard {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.5rem 1.75rem;
  margin: 0 0 2.5rem;
}

.dashboard-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 1.5rem;
  align-items: end;
}

.dashboard .stat {
  border-left: 1px solid var(--border);
  padding-left: 1.25rem;
}

.dashboard .stat:first-child {
  border-left: none;
  padding-left: 0;
}

.dashboard .stat-value {
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
  font-feature-settings: "tnum";
}

.dashboard .stat-value-alert {
  color: var(--text-muted);  /* muted when zero */
}

.dashboard .stat-value-alert-active {
  color: #b04040;  /* clear red when there's pending work */
}

.dashboard .stat-admin {
  border-left: 1px dashed var(--border-strong);
  position: relative;
}

.admin-badge {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: #f0eee5;
  color: var(--text-soft);
  padding: 0.05rem 0.4rem;
  border-radius: 2px;
  margin-left: 0.4rem;
  vertical-align: middle;
}

.dashboard .stat-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.dashboard-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-soft);
}

.dashboard-meta a {
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  .dashboard .stat {
    border-left: none;
    padding-left: 0;
  }
  .dashboard .stat-value {
    font-size: 1.6rem;
  }
}

/* ===== HERO ===== */
.hero {
  padding: 1rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.hero .eyebrow {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: 2.6rem;
  margin-bottom: 1rem;
}

.hero p.lead {
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.15s ease;
  cursor: pointer;
  font-family: inherit;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: var(--surface);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--surface);
}

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

.btn-secondary:hover {
  background: var(--surface);
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== CARDS / SECTIONS ===== */
.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.5rem;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ===== CALLOUT ===== */
.callout {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  border-radius: 0 4px 4px 0;
}

.callout p {
  margin-bottom: 0;
  color: var(--text);
}

.callout-warning {
  background: var(--warning-bg);
  border-left-color: var(--warning);
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
  color: var(--text);
}

.form-group .hint {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  color: var(--text);
  transition: border-color 0.15s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.5;
}

.form-group .checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.form-group .checkbox-row input[type="checkbox"] {
  margin-top: 0.3rem;
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--accent);
}

.form-group .checkbox-row label {
  margin-bottom: 0;
  font-weight: 400;
  cursor: pointer;
}

.form-message {
  padding: 1rem 1.25rem;
  border-radius: 4px;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  display: none;
}

.form-message.success {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  color: var(--text);
  display: block;
}

.form-message.error {
  background: #fdecec;
  border-left: 3px solid #b04040;
  color: #5a1a1a;
  display: block;
}

/* ===== CHARTS (register page) ===== */
.charts {
  margin: 0 0 2.5rem;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
  gap: 0.85rem;
}

@media (max-width: 900px) {
  .charts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 1.25rem; }
}

@media (max-width: 480px) {
  .charts-grid { grid-template-columns: 1fr !important; }
}

.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem 1.1rem 1.1rem;
  min-height: 200px;
  display: flex;
  flex-direction: column;
}

.chart-card h3 {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-soft);
  margin: 0 0 1rem;
}

.chart {
  width: 100%;
  flex: 1;
  display: flex;
  align-items: center;
}

/* --- Donut chart --- */
.donut-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  width: 100%;
}

.donut-svg {
  width: 100%;
  height: auto;
  max-width: 140px;
}

.donut-total {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
  font-size: 22px;
  font-weight: 600;
  fill: var(--text);
  font-feature-settings: "tnum";
}

.donut-total-label {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
  font-size: 9px;
  fill: var(--text-soft);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.donut-legend {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  width: 100%;
}

.donut-legend-row {
  display: grid;
  grid-template-columns: 10px 1fr auto;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--text);
  line-height: 1.3;
}

.donut-swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.donut-legend-label {
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.donut-legend-value {
  font-feature-settings: "tnum";
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
}

.donut-legend-pct {
  color: var(--text-soft);
  font-weight: 400;
  margin-left: 0.25rem;
}

/* --- Bar chart --- */
.chart-card-bar .chart {
  align-items: flex-start;
}

.chart-label {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
  font-size: 12px;
  fill: var(--text-muted);
  text-transform: none;
  letter-spacing: normal;
}

.chart-value {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  fill: var(--text);
  font-weight: 500;
}

.chart-empty {
  color: var(--text-soft);
  font-size: 0.85rem;
  margin: 0;
}

/* ===== REGISTER LIST ===== */
.filters {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem;
  margin-bottom: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.filters select,
.filters input {
  width: 100%;
  padding: 0.55rem 0.75rem;
  font-size: 0.9rem;
  font-family: inherit;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  color: var(--text);
}

.entry-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.entry {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.5rem;
}

.entry-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.entry-id {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.8rem;
  color: var(--text-soft);
  letter-spacing: 0.02em;
}

.entry-meta {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.tag {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  font-size: 0.8rem;
  font-weight: 500;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 3px;
}

.tag-severity-major { background: #fdecec; color: #8a2020; }
.tag-severity-significant { background: var(--warning-bg); color: var(--warning); }
.tag-severity-minor { background: #f0f0e8; color: var(--text-muted); }
.tag-severity-near-miss { background: var(--accent-soft); color: var(--accent); }

.tag-case-study {
  background: #f0eee5;
  color: #5a4a1a;
  border: 1px dashed #c9c2a3;
}

.entry h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.entry-section {
  margin-bottom: 0.75rem;
}

.entry-section-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-soft);
  margin-bottom: 0.25rem;
}

.entry-section p {
  font-size: 0.95rem;
  margin-bottom: 0;
  color: var(--text);
}

.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}

/* ===== FOOTER ===== */
footer.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  margin-top: 4rem;
}

footer.site-footer .inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}

footer.site-footer h4 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-soft);
  margin-bottom: 0.75rem;
}

footer.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

footer.site-footer li {
  margin-bottom: 0.4rem;
  color: var(--text-muted);
  font-size: 0.92rem;
}

footer.site-footer a {
  color: var(--text-muted);
  text-decoration: none;
}

footer.site-footer a:hover {
  color: var(--accent);
}

footer.site-footer .attribution {
  border-top: 1px solid var(--border);
  margin-top: 2rem;
  padding-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-soft);
  grid-column: 1 / -1;
}

footer.site-footer .attribution p {
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-soft);
}

/* ===== UTILITIES ===== */
.spacer-sm { height: 1rem; }
.spacer { height: 2rem; }
.spacer-lg { height: 3rem; }

@media (max-width: 600px) {
  html { font-size: 16px; }
  .hero h1 { font-size: 2rem; }
  main { padding: 2rem 1.25rem 3rem; }
  header.site-header .inner { gap: 1rem; }
  header.site-header nav { gap: 1rem; font-size: 0.9rem; }
}