/* ═══════════════════════════════════════════════════════════
   ESPEN Theme — Nigeria SCH Dashboard
   Colours match the WHO AFRO / ESPEN Portal visual identity.
   ═══════════════════════════════════════════════════════════ */

/* ── CSS Custom Properties ──────────────────────────────── */
:root {
  --primary:       #009ADE;
  --primary-dark:  #0077B6;
  --navy:          #00205B;
  --teal:          #009E73;
  --orange:        #E5A100;
  --red:           #D32F2F;
  --light-blue:    #61C5E6;
  --bg:            #F0F2F5;
  --bg-card:       #FFFFFF;
  --text:          #333333;
  --text-light:    #666666;
  --text-muted:    #999999;
  --border:        #DEE2E6;
  --shadow:        0 2px 8px rgba(0,0,0,.08);
  --shadow-hover:  0 4px 16px rgba(0,0,0,.12);
  --radius:        8px;
  --radius-sm:     4px;
  --font:          'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container:     1320px;
}

/* ── Reset / Base ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ── Header ─────────────────────────────────────────────── */
.espen-header {
  position: sticky; top: 0; z-index: 1000;
  box-shadow: 0 2px 6px rgba(0,0,0,.1);
}

.header-top {
  background: var(--navy);
  padding: .35rem 0;
  font-size: .8rem;
}
.header-top-inner { display: flex; justify-content: flex-end; }
.who-link {
  color: rgba(255,255,255,.85);
  font-size: .8rem;
  transition: color .2s;
}
.who-link:hover { color: #fff; }

.header-main {
  background: #fff;
  border-bottom: 3px solid var(--primary);
}
.header-main-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .6rem 1.25rem;
  gap: 1rem;
}

.brand {
  display: flex; align-items: center; gap: .6rem;
  color: var(--navy);
  font-size: 1.1rem;
}
.brand-logo {
  font-size: 1.8rem;
  color: var(--primary);
}
.brand-text strong { display: block; font-size: 1.25rem; letter-spacing: 1px; }
.brand-text small  { display: block; font-size: .75rem; color: var(--text-light); font-weight: 500; }

.nav-toggle {
  display: none;
  background: none; border: none;
  font-size: 1.5rem; color: var(--navy);
  cursor: pointer;
}

.main-nav {
  display: flex; gap: .15rem;
}
.main-nav a {
  padding: .55rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: .88rem;
  font-weight: 500;
  transition: background .2s, color .2s;
  white-space: nowrap;
}
.main-nav a i { margin-right: .35rem; font-size: .85rem; }
.main-nav a:hover { background: var(--bg); color: var(--primary); }
.main-nav a.active {
  background: var(--primary);
  color: #fff;
}

/* ── Page content ───────────────────────────────────────── */
.page-content {
  flex: 1;
  padding: 1.5rem 0 3rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: .25rem;
}
.page-subtitle {
  font-size: .9rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

/* ── Stat / KPI Cards ───────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.kpi-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.5rem;
  border-top: 4px solid var(--primary);
  transition: box-shadow .2s, transform .15s;
}
.kpi-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.kpi-card.teal   { border-top-color: var(--teal); }
.kpi-card.orange { border-top-color: var(--orange); }
.kpi-card.red    { border-top-color: var(--red); }
.kpi-card.navy   { border-top-color: var(--navy); }

.kpi-icon {
  font-size: 1.6rem;
  color: var(--primary);
  margin-bottom: .35rem;
}
.kpi-card.teal   .kpi-icon { color: var(--teal); }
.kpi-card.orange .kpi-icon { color: var(--orange); }
.kpi-card.red    .kpi-icon { color: var(--red); }
.kpi-card.navy   .kpi-icon { color: var(--navy); }

.kpi-value {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
}
.kpi-label {
  font-size: .82rem;
  color: var(--text-light);
  font-weight: 500;
  margin-top: .15rem;
}

/* ── Chart Panels ───────────────────────────────────────── */
.chart-grid {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}
.chart-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.chart-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.chart-grid.cols-1-2 { grid-template-columns: 1fr 2fr; }
.chart-grid.cols-2-1 { grid-template-columns: 2fr 1fr; }

.chart-panel {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}
.chart-panel-title {
  font-size: .92rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: .75rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--border);
}
.chart-container {
  width: 100%;
  min-height: 350px;
}
.chart-container.short { min-height: 280px; }
.chart-container.tall  { min-height: 450px; }
.chart-container.map   { min-height: 520px; }

/* ── Data Table ─────────────────────────────────────────── */
.data-table-wrap { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .85rem;
}
.data-table th, .data-table td {
  padding: .55rem .75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.data-table th {
  background: var(--bg);
  font-weight: 600;
  color: var(--navy);
  position: sticky; top: 0;
  white-space: nowrap;
}
.data-table tr:hover td { background: #f0f7ff; }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; }

/* ── Badges ─────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: .15rem .55rem;
  border-radius: 10px;
  font-size: .75rem;
  font-weight: 600;
}
.badge-high   { background: #fde8e8; color: var(--red); }
.badge-moderate { background: #fff3cd; color: #856404; }
.badge-low    { background: #d4edda; color: #155724; }
.badge-none   { background: #e2e8f0; color: #4a5568; }

/* ── Filter bar ─────────────────────────────────────────── */
.filter-bar {
  display: flex; align-items: flex-end; gap: 1rem;
  margin-bottom: 1.25rem; flex-wrap: wrap;
  background: #fff; padding: .75rem 1rem; border-radius: var(--radius);
  box-shadow: var(--shadow); border-left: 4px solid var(--primary);
}
.filter-bar label { display: flex; flex-direction: column; gap: .25rem; }
.filter-bar .filter-label {
  font-size: .7rem; font-weight: 600; color: var(--text-light);
  text-transform: uppercase; letter-spacing: .05em;
}
.filter-bar select {
  font-family: var(--font); font-size: .85rem;
  padding: .4rem .75rem; min-width: 150px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: #fff; cursor: pointer;
}
.filter-bar select:disabled { opacity: .5; cursor: not-allowed; }

/* ── Map controls ───────────────────────────────────────── */
.map-controls {
  display: flex; align-items: center; gap: .75rem;
  margin-bottom: 1rem; flex-wrap: wrap;
}
.map-controls select,
.map-controls button {
  font-family: var(--font);
  font-size: .85rem;
  padding: .4rem .75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  cursor: pointer;
}
.map-controls button {
  background: var(--primary);
  color: #fff; border: none;
}
.map-controls button:hover { background: var(--primary-dark); }

.back-btn {
  display: none;
  align-items: center; gap: .35rem;
  background: var(--navy); color: #fff;
  border: none; border-radius: var(--radius-sm);
  padding: .4rem .85rem;
  font-family: var(--font);
  font-size: .85rem;
  cursor: pointer;
  transition: background .2s;
}
.back-btn:hover { background: #001744; }
.back-btn.visible { display: inline-flex; }

/* ── Footer ─────────────────────────────────────────────── */
.espen-footer {
  background: var(--navy);
  color: rgba(255,255,255,.8);
  padding: 2rem 0;
  font-size: .82rem;
  margin-top: auto;
}
.footer-inner { text-align: center; }
.footer-brand {
  font-size: 1.05rem;
  margin-bottom: .75rem;
}
.footer-brand i { margin-right: .4rem; color: var(--primary); }
.footer-links { margin: .5rem 0; }
.footer-links a {
  color: var(--light-blue);
  margin: 0 .75rem;
  font-weight: 500;
}
.footer-links a:hover { color: #fff; }
.footer-copy {
  margin-top: .75rem;
  color: rgba(255,255,255,.5);
  font-size: .78rem;
}

/* ── Utilities ──────────────────────────────────────────── */
.text-center { text-align: center; }
.mt-1  { margin-top: .5rem; }
.mt-2  { margin-top: 1rem; }
.mt-3  { margin-top: 1.5rem; }
.mb-1  { margin-bottom: .5rem; }
.mb-2  { margin-bottom: 1rem; }
.mb-3  { margin-bottom: 1.5rem; }

.loading-spinner {
  display: flex; justify-content: center; align-items: center;
  min-height: 200px; color: var(--text-muted);
}
.loading-spinner::after {
  content: '';
  width: 32px; height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 992px) {
  .chart-grid.cols-2,
  .chart-grid.cols-3,
  .chart-grid.cols-1-2,
  .chart-grid.cols-2-1 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,.1);
    padding: .5rem;
    z-index: 999;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: .75rem 1rem; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .header-main-inner { padding: .5rem 1rem; }
}