:root {
  --nav-h: 60px;
  --sidebar-w: 300px;
  --nav-grad-start: #1e3a5f;
  --nav-grad-end: #3498db;
  --panel-bg: #ffffff;
  --panel-border: rgba(0, 0, 0, 0.08);
  --panel-shadow: 0 8px 32px rgba(15, 32, 55, 0.18);
  --text-strong: #1e293b;
  --text-muted: #64748b;
  --accent: #2563eb;
  --chip-bg: #f1f5f9;
  --radius-card: 14px;
  --radius-pill: 999px;
  --sb-head-h: 44px;
  --sb-item-h: 34px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-strong);
  background: #eef2f6;
  overflow: hidden;
}

/* ── Navbar ───────────────────────────────────────────── */
.navbar.ydt {
  background: linear-gradient(135deg, var(--nav-grad-start) 0%, var(--nav-grad-end) 100%);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.15);
  height: var(--nav-h);
  padding: 0 1.25rem;
  z-index: 1100;
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  gap: 1rem;
}
.navbar.ydt .navbar-brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #fff;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.navbar.ydt .navbar-brand .brand-icon {
  background: rgba(255,255,255,0.18);
  width: 36px; height: 36px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}
.navbar.ydt .brand-sub {
  font-weight: 400;
  font-size: 0.85rem;
  opacity: 0.85;
  margin-left: 0.5rem;
  padding-left: 0.75rem;
  border-left: 1px solid rgba(255,255,255,0.25);
}
.navbar.ydt .lang-toggle {
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.28);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 0.3rem 0.85rem;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background 0.15s;
  flex-shrink: 0;
}
.navbar.ydt .lang-toggle:hover { background: rgba(255,255,255,0.28); }

/* ── Layout shell ─────────────────────────────────────── */
#sidebar {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--panel-bg);
  border-right: 1px solid var(--panel-border);
  box-shadow: 2px 0 12px rgba(15,32,55,0.07);
  z-index: 900;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
}

#map {
  position: fixed;
  top: var(--nav-h);
  left: var(--sidebar-w);
  right: 0;
  bottom: 0;
  background: #dbe6ec;
}

/* ── Sidebar sections ─────────────────────────────────── */
.sb-section {
  border-bottom: 1px solid var(--panel-border);
  flex-shrink: 0;
}

/* Static head (basemap — no toggle) */
.sb-section-static-head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0 14px;
  height: var(--sb-head-h);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

/* Accordion head */
.sb-section-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0 14px;
  height: var(--sb-head-h);
  cursor: pointer;
  user-select: none;
  transition: background 0.12s;
}
.sb-section-head:hover { background: #f8fafc; }

.sb-section-head input[type="checkbox"] {
  width: 15px; height: 15px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
  margin: 0;
}
.sb-section-title {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-strong);
}
.sb-count {
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--chip-bg);
  color: var(--text-muted);
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-pill);
}
.sb-chevron {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: transform 0.22s ease;
  flex-shrink: 0;
}
.sb-section-head.open .sb-chevron { transform: rotate(180deg); }

/* Collapsible body */
.sb-section-body { display: block; }
.sb-section-body.collapsed { display: none; }

/* Basemap select */
.sb-section-body {
  padding-bottom: 2px;
}
.sb-basemap .sb-section-body {
  padding: 4px 14px 12px;
}
.sb-select {
  width: 100%;
  border-radius: 8px;
  border: 1px solid #cbd5e1;
  padding: 0.35rem 0.5rem;
  font-size: 0.88rem;
  background: #f8fafc;
  cursor: pointer;
}
.sb-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(37,99,235,0.15);
}

/* Controls block (color-by, legend) */
.sb-controls {
  padding: 8px 14px;
  border-bottom: 1px solid var(--panel-border);
}
.sb-label-sm {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}
.sb-legend-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.3rem;
}
.sb-link-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
}
.sb-link-btn:hover { text-decoration: underline; }

/* Legend rows (status filter) */
.legend-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.22rem 0.3rem;
  font-size: 0.86rem;
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
  transition: background 0.12s;
}
.legend-row:hover { background: #f8fafc; }
.legend-row input[type="checkbox"] {
  width: 14px; height: 14px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
  margin: 0;
}
.legend-row.disabled .legend-chip { opacity: 0.25; }
.legend-row.disabled .legend-row-label { opacity: 0.45; text-decoration: line-through; }
.legend-chip {
  width: 20px; height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}
.legend-row-label { flex: 1; }
.legend-row-count {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* Feature list header */
.sb-list-header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 8px 14px 4px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-muted);
}

/* Feature list items */
.sb-feature-list {
  padding: 0 0 8px;
  max-height: 380px;
  overflow-y: auto;
  overflow-x: hidden;
}
.sb-item {
  display: flex;
  align-items: center;
  padding: 0 14px;
  height: var(--sb-item-h);
  font-size: 0.87rem;
  color: var(--text-strong);
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: background 0.1s, border-color 0.1s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sb-item:hover { background: #f1f5f9; }
.sb-item.active {
  background: #eff6ff;
  border-left-color: var(--accent);
  font-weight: 600;
  color: var(--accent);
}
.sb-item.filtered-out {
  opacity: 0.35;
  text-decoration: line-through;
  pointer-events: none;
}

/* Layer swatches */
.layer-swatch {
  width: 14px; height: 14px;
  border-radius: 3px;
  flex-shrink: 0;
}
.layer-swatch.rivers { background: linear-gradient(135deg, #1a9850, #fee08b, #d73027); }
.layer-swatch.dhmoi  { background: #94a3b8; }
.layer-swatch.natura { background: #66bb6a; border: 1px solid #2e7d32; }

/* ── Info panel (slide-out from right) ──────────────────── */
.info-panel {
  position: fixed;
  top: var(--nav-h);
  right: 0;
  bottom: 0;
  width: 380px;
  max-width: 100vw;
  background: var(--panel-bg);
  box-shadow: -8px 0 28px rgba(15,32,55,0.14);
  border-left: 1px solid var(--panel-border);
  transform: translateX(calc(100% + 20px));
  transition: transform 0.32s cubic-bezier(0.2, 0.8, 0.2, 1);
  z-index: 950;
  display: flex;
  flex-direction: column;
}
.info-panel.open { transform: translateX(0); }

.info-panel-header {
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--panel-border);
  position: relative;
}
.info-panel-kind {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: #fff;
  padding: 0.18rem 0.55rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.55rem;
}
.info-panel-kind.kind-rivers { background: #2563eb; }
.info-panel-kind.kind-dhmoi  { background: #475569; }
.info-panel-kind.kind-natura { background: #16a34a; }
.info-panel-cycle {
  display: inline-block;
  margin-left: 0.45rem;
  vertical-align: middle;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-pill);
  background: #f1f5f9;
  color: var(--text-muted);
  border: 1px dashed #cbd5e1;
  cursor: help;
}
.info-panel-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.25;
  margin: 0;
  color: var(--text-strong);
}
.info-panel-subtitle { margin-top: 0.2rem; font-size: 0.82rem; color: var(--text-muted); }
.info-panel-close {
  position: absolute;
  top: 12px; right: 12px;
  background: var(--chip-bg);
  border: none;
  width: 32px; height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}
.info-panel-close:hover { background: #e2e8f0; color: var(--text-strong); }

.info-panel-body {
  padding: 18px 20px 24px;
  overflow-y: auto;
  flex: 1;
}
.info-panel-empty {
  padding: 32px 22px;
  color: var(--text-muted);
  text-align: center;
}
.info-panel-empty .bi {
  font-size: 2.4rem;
  display: block;
  margin-bottom: 0.6rem;
  opacity: 0.5;
}
.fw-bold { font-weight: 700; }
.mt-2 { margin-top: 0.5rem; }

.section-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin: 18px 0 8px;
  font-weight: 600;
}
.section-label:first-child { margin-top: 0; }

/* Status chips */
.status-grid { display: grid; gap: 8px; }
.status-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--chip-bg);
  border-left: 5px solid var(--chip-color, #cbd5e1);
}
.status-chip-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
}
.status-chip-value { font-weight: 700; color: var(--text-strong); font-size: 0.95rem; }

/* Attribute table */
.attr-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.attr-table tr { border-bottom: 1px solid #eef2f6; }
.attr-table tr:last-child { border-bottom: 0; }
.attr-table th, .attr-table td { padding: 8px 0; text-align: left; vertical-align: top; }
.attr-table th { width: 45%; color: var(--text-muted); font-weight: 500; font-size: 0.82rem; }
.attr-table td { color: var(--text-strong); word-break: break-word; }
.text-muted { color: var(--text-muted); }

/* ── Metadata enrichment section ──────────────────────── */
.meta-section {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--panel-border);
}

.meta-photo-wrap {
  margin: 0 0 0.75rem;
  border-radius: 10px;
  overflow: hidden;
  background: var(--chip-bg);
}

.meta-photo {
  width: 100%;
  display: block;
  max-height: 190px;
  object-fit: cover;
}

.meta-photo-caption {
  font-size: 0.72rem;
  color: var(--text-muted);
  padding: 0.35rem 0.6rem;
  line-height: 1.45;
}

.meta-credit {
  opacity: 0.75;
}

.meta-desc {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-strong);
  margin: 0 0 0.85rem;
}

.meta-links {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.25rem;
}

.meta-links a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.meta-links a:hover { text-decoration: underline; }
.meta-links a .bi { font-size: 0.7rem; }

/* Loading toast */
.loading-toast {
  position: fixed;
  top: calc(var(--nav-h) + 18px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15,32,55,0.88);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  z-index: 1000;
  display: none;
  pointer-events: none;
}
.loading-toast.show { display: block; }

/* Mobile */
@media (max-width: 700px) {
  :root { --sidebar-w: 0px; }
  #sidebar { display: none; }
  .info-panel { width: 100vw; }
  .navbar.ydt .brand-sub { display: none; }
}