/* Aligned with https://www.chula.ac.th/ — white/black content, muted Chula pink accent */
:root {
  --chula-pink: #da5f8e;
  --chula-pink-dark: #c4517d;
  --chula-pink-soft: #f3e8ee;
  --chula-black: #141414;
  --chula-grey: #6b6b6b;
  --chula-nav: #4f4f4f;
  --neutral-100: #f5f5f5;
  --neutral-200: #f6f6f6;
  --neutral-900: #141414;
  --separator: #e5e5e5;
  --separator-strong: #bfbfbf;
  --chula-font-body: "Chula Charas New", "IBM Plex Sans Thai", "Sarabun", Arial, sans-serif;
  --chula-font-heading: "Chula Longkorn", "Chula Charas New", "IBM Plex Sans Thai", Arial, sans-serif;

  --bg: #fff;
  --panel: #fff;
  --panel-strong: var(--neutral-100);
  --panel-border: var(--separator);
  --text: var(--chula-black);
  --muted: var(--chula-grey);
  --grid: rgba(20, 20, 20, 0.08);
  --accent: var(--chula-pink);
  --accent-2: var(--chula-pink-dark);
  --accent-3: var(--chula-pink-soft);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--chula-font-body);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--chula-font-heading);
}

/* —— Site header (matches chula-header) —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--separator);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}

.site-header-inner {
  width: min(1200px, 92%);
  margin: 0 auto;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
}

.site-logo-link {
  display: inline-block;
  line-height: 0;
  text-decoration: none;
}

.site-logo-link img {
  display: block;
  width: auto;
  max-width: min(168px, 44vw);
  height: 44px;
  object-fit: contain;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--chula-nav);
  font-family: var(--chula-font-body);
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--chula-pink);
}

.site-nav a.is-active {
  color: var(--chula-black);
  font-weight: 700;
}

/* —— Page title band (white + black type, muted pink accent) —— */
.page-hero {
  color: var(--text);
  background: var(--neutral-100);
  border-bottom: 1px solid var(--separator);
  border-top: 3px solid var(--chula-pink);
}

.page-hero-inner {
  width: min(1200px, 92%);
  margin: 0 auto;
  padding: 2.8rem 0 3rem;
}

.shell {
  width: min(1200px, 92%);
  margin: 0 auto;
  padding: 2rem 0 3rem;
}

.hero,
.summary-grid,
.chart-grid,
.org-section {
  position: relative;
  z-index: 1;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
}

.hero-actions {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  flex-shrink: 0;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--chula-pink);
}

.panel-kicker {
  color: var(--chula-pink);
}

.hero h1,
.section-head h2,
.panel h2 {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 900px;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  line-height: 1.3;
  color: var(--chula-black);
}

.hero-subtitle {
  max-width: 780px;
  margin: 12px 0 0;
  color: var(--chula-grey);
  font-family: var(--chula-font-body);
  font-size: 1.02rem;
  line-height: 1.65;
}

.date-range,
.section-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.date-range {
  color: var(--chula-black);
  font-weight: 600;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.summary-card,
.panel,
.org-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.summary-card {
  padding: 22px;
  background: #fff;
}

.summary-card p {
  margin: 0;
}

.summary-label {
  color: var(--muted);
  font-size: 0.95rem;
}

.summary-value {
  margin-top: 10px;
  font-size: 2.1rem;
  font-family: var(--chula-font-heading);
  font-weight: 700;
  color: var(--chula-black);
  letter-spacing: 0;
}

.summary-note {
  margin-top: 8px;
  color: var(--chula-pink);
  font-size: 0.9rem;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.users-panel {
  grid-column: 1 / -1;
}

.panel {
  padding: 20px 20px 18px;
}

.panel-head,
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.panel h2 {
  font-size: 1.35rem;
  color: var(--chula-black);
}

.expand-button,
.export-button,
.modal-close {
  border: 1px solid var(--separator);
  border-radius: 8px;
  background: #fff;
  color: var(--chula-black);
  font: inherit;
  font-weight: 600;
  padding: 10px 14px;
  cursor: pointer;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}

.expand-button:hover,
.modal-close:hover {
  background: var(--neutral-100);
  border-color: var(--separator-strong);
  color: var(--chula-black);
}

.export-button {
  min-width: 132px;
  padding-inline: 18px;
  background: var(--chula-pink);
  color: #fff;
  border-color: var(--chula-pink);
}

.export-button:hover {
  background: var(--chula-pink-dark);
  border-color: var(--chula-pink-dark);
  color: #fff;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin: 18px 0 8px;
  min-height: 28px;
}

.legend.multi-line {
  gap: 10px 14px;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.legend-swatch {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 2px solid currentColor;
  background: transparent;
}

.legend-swatch.dashed {
  border-style: dashed;
}

.chart,
.chart-modal-body {
  width: 100%;
  min-height: 320px;
}

.chart.tall {
  min-height: 380px;
}

.chart svg,
.chart-modal-body svg {
  width: 100%;
  height: 100%;
  display: block;
}

.monthly-summary {
  display: grid;
  gap: 14px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--panel-border);
}

.monthly-summary-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.monthly-summary h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--chula-black);
}

.monthly-period {
  max-width: 320px;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
  text-align: right;
}

.monthly-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  background: var(--neutral-100);
}

.monthly-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.monthly-table th,
.monthly-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--separator);
  text-align: left;
  white-space: nowrap;
}

.monthly-table thead th {
  color: var(--chula-black);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--neutral-100);
  border-bottom: 2px solid var(--chula-pink);
}

.monthly-table tbody th {
  color: var(--text);
  font-weight: 600;
}

.monthly-table tbody tr:nth-child(even) {
  background: var(--neutral-200);
}

.monthly-table tfoot th,
.monthly-table tfoot td {
  border-bottom: 0;
  background: var(--chula-pink-soft);
  color: var(--chula-black);
  font-weight: 700;
}

.monthly-table .numeric {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.org-section {
  margin-top: 18px;
  padding: 20px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
}

.section-head h2 {
  font-size: 1.5rem;
  color: var(--chula-black);
}

.org-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.org-card {
  padding: 18px;
}

.org-card h3 {
  margin: 0 0 14px;
  font-size: 1.1rem;
  color: var(--chula-black);
}

.org-list {
  display: grid;
  gap: 12px;
}

.org-item {
  display: grid;
  gap: 6px;
}

.org-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  font-size: 0.95rem;
}

.org-name {
  color: var(--text);
}

.org-value {
  color: var(--muted);
}

.org-bar {
  height: 7px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--neutral-200);
}

.org-bar-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--chula-pink), var(--chula-pink-dark));
}

.chart-modal {
  width: min(1360px, calc(100vw - 36px));
  max-width: none;
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  background: #fff;
  color: var(--text);
  padding: 18px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.15);
}

.chart-modal::backdrop {
  background: rgba(23, 23, 23, 0.45);
  backdrop-filter: blur(4px);
}

.modal-content {
  display: grid;
  gap: 10px;
}

.modal-head {
  padding-right: 42px;
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 1.25rem;
  width: 42px;
  height: 42px;
  padding: 0;
}

.axis-label,
.tick-label {
  fill: var(--muted);
  font-size: 12px;
  font-family: var(--chula-font-body);
}

.grid-line {
  stroke: var(--grid);
  stroke-width: 1;
}

.series-line {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.series-average {
  stroke-dasharray: 7 7;
}

.series-point {
  stroke-width: 2;
}

@media (max-width: 1180px) {
  .summary-grid,
  .org-grid,
  .chart-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.8rem 0;
    min-height: 0;
  }

  .page-hero-inner,
  .shell {
    width: min(1200px, 94%);
  }

  .hero,
  .panel-head,
  .section-head,
  .monthly-summary-head {
    flex-direction: column;
  }

  .hero-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .summary-grid,
  .org-grid,
  .chart-grid {
    grid-template-columns: 1fr;
  }

  .summary-value {
    font-size: 1.85rem;
  }

  .monthly-period {
    max-width: none;
    text-align: left;
  }

  .monthly-table {
    min-width: 640px;
  }
}