:root {
  --ink: #1c2530;
  --ink-soft: #4b5a68;
  --line: #d7dee4;
  --line-soft: #eaeef1;
  --surface: #ffffff;
  --surface-sunken: #f4f6f8;
  --accent: #2c6e49;
  --accent-soft: #e3f0e8;
  --primary: #1f5f8b;
  --primary-hover: #174a6d;
  --warn: #b2571b;
  --danger: #a5342a;
  --danger-hover: #832820;
  --radius: 8px;
  --font: "Segoe UI", "Avenir Next", Avenir, Arial, sans-serif;
}

* { box-sizing: border-box; }
/* Generic hide utility - most elements only ever need `.hidden` itself, but
   a few spots also carry a more specific `.foo.hidden` rule (e.g. .toast,
   .photo-preview) where the hidden state does more than plain display:none. */
.hidden { display: none; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: var(--font);
  color: var(--ink);
  background: var(--surface-sunken);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 14px;
}

/* ---------- Header ---------- */
.app-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  background: linear-gradient(135deg, #163a2b, #1f5f3a);
  color: #fff;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { font-size: 30px; }
.app-header h1 { margin: 0; font-size: 20px; letter-spacing: 0.3px; }
.tagline { margin: 2px 0 0; font-size: 12.5px; color: #cfe8d8; }

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.project-meta label {
  display: flex;
  flex-direction: column;
  font-size: 11px;
  color: #d8ecdf;
  gap: 2px;
}
.project-meta input, .project-meta select {
  padding: 5px 8px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.12);
  color: #fff;
  min-width: 150px;
}
.project-meta input::placeholder { color: #cfe0d5; }
.project-meta input:focus, .project-meta select:focus {
  outline: 2px solid #fff;
  background: rgba(255,255,255,0.22);
}
.project-meta select option { color: #1c2530; }

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.tool-group {
  display: flex;
  gap: 8px;
  align-items: center;
  padding-right: 14px;
  border-right: 1px solid var(--line-soft);
}
.tool-group:last-child { border-right: none; }

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  font-weight: 600;
  transition: background 0.12s, border-color 0.12s, transform 0.05s;
  white-space: nowrap;
}
.tool-btn:hover { background: var(--surface-sunken); }
.tool-btn:active { transform: translateY(1px); }
.tool-btn.subtle { font-weight: 500; color: var(--ink-soft); }
.tool-btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.tool-btn.primary:hover { background: var(--primary-hover); }
.tool-btn.accent { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.tool-btn.accent:hover { background: #d3e9da; }
.tool-btn.danger { background: #fbeceb; border-color: var(--danger); color: var(--danger); }
.tool-btn.danger:hover { background: #f6d9d6; }
.tool-btn[disabled] { opacity: 0.45; cursor: not-allowed; }
.tool-btn.tool-active { background: var(--primary); border-color: var(--primary); color: #fff; }
.ic { font-size: 15px; }
.file-btn { position: relative; }

#connectType { padding: 8px 10px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); }

/* ---------- Workspace ---------- */
.workspace {
  display: flex;
  height: calc(100vh - 132px);
  min-height: 480px;
}

.map-pane {
  position: relative;
  flex: 1.35;
  border-right: 1px solid var(--line);
  transition: flex-basis 0.15s ease;
}
#map { width: 100%; height: 100%; background: #dfe7ea; }

/* Traverse/Leveling tables are wide (angle+lat/dep+coordinate columns) and
   need real room to work in - the live map isn't the focus while filling
   them in, so shrink it down instead of forcing horizontal scroll on a
   narrow half-width pane at typical laptop widths. */
.workspace.data-focus .map-pane { flex: 0 0 260px; min-width: 260px; }
.workspace.data-focus .notebook-pane { flex: 1; }

.mode-banner {
  position: absolute;
  top: 12px; left: 50%;
  transform: translateX(-50%);
  z-index: 900;
  background: rgba(28, 37, 48, 0.88);
  color: #fff;
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 3px 10px rgba(0,0,0,0.25);
}
.mode-banner.hidden { display: none; }

.notebook-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  min-width: 380px;
  overflow: hidden;
}

.pane-tabs {
  display: flex;
  border-bottom: 1px solid var(--line);
  background: var(--surface-sunken);
}
.tab-btn {
  flex: 1;
  padding: 10px 6px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-weight: 600;
  color: var(--ink-soft);
  border-bottom: 3px solid transparent;
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); background: var(--surface); }
.tab-btn.scope-hidden { display: none; }

.tab-panel { display: none; flex: 1; overflow: auto; padding: 10px; }
.tab-panel.active { display: block; }

/* ---------- Notebook table ---------- */
.notebook-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
}
.notebook-table.hide-coords .col-northing,
.notebook-table.hide-coords .col-easting { display: none; }
.notebook-table th, .notebook-table td {
  border: 1px solid var(--line-soft);
  padding: 6px 8px;
  text-align: left;
  vertical-align: top;
}
.notebook-table th {
  background: var(--surface-sunken);
  cursor: pointer;
  position: sticky;
  top: 0;
  user-select: none;
}
.notebook-table th:hover { background: #e7ecef; }
.notebook-table td[contenteditable="true"] { cursor: text; }
.notebook-table td[contenteditable="true"]:focus {
  outline: 2px solid var(--primary);
  background: #eef6fb;
}
.notebook-table tr:hover td { background: #fafcfd; }
.notebook-table .thumb {
  width: 34px; height: 34px; object-fit: cover; border-radius: 4px; border: 1px solid var(--line);
}
.row-actions button {
  border: none; background: none; cursor: pointer; font-size: 14px; padding: 2px 4px;
}
.badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
}

.empty-hint { color: var(--ink-soft); font-size: 13px; padding: 20px 10px; text-align: center; }

/* ---------- Traverse / leveling adjustment blocks ---------- */
.survey-block {
  margin-bottom: 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-soft);
}
.survey-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 6px;
}
.survey-block-header h3 { margin: 0; font-size: 14px; color: var(--primary); }
.survey-block-actions { display: flex; align-items: center; gap: 10px; }
.inline-label {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--ink-soft);
  font-weight: 600;
}
.inline-label select { padding: 4px 6px; }

.adjust-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11.5px;
  margin: 8px 0 10px;
}
.adjust-table th, .adjust-table td {
  border: 1px solid var(--line-soft);
  padding: 4px 6px;
  text-align: center;
  white-space: nowrap;
}
.adjust-table th { background: var(--surface-sunken); }
.adjust-table td:first-child, .adjust-table th:first-child { text-align: left; }
.adjust-table input {
  width: 66px;
  padding: 3px 4px;
  font-size: 11.5px;
  text-align: right;
}
.adjust-table input[type="checkbox"] { width: auto; }
.adjust-table input.wide-input { width: 100px; }
.adjust-table tr.tp-row td { background: #fbf3e6; }

.survey-block h4 { margin: 10px 0 4px; font-size: 13px; color: var(--ink); }
.closure-check {
  background: var(--surface-sunken);
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  padding: 8px 12px;
  margin: 6px 0 14px;
  font-size: 12.5px;
  line-height: 2.1;
}
.closure-check .hint-text { margin: 4px 0 0; line-height: 1.5; }
.check-input {
  width: 70px;
  padding: 3px 5px;
  font-size: 12px;
  text-align: right;
  border: 1px solid var(--line);
  border-radius: 4px;
}

/* ---------- Plan view canvas ---------- */
#planViewCanvas {
  width: 100%;
  max-width: 1100px;
  border: 1px solid var(--line);
  background: #fff;
}

/* ---------- Modals ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(20,26,32,0.55);
  display: flex; align-items: center; justify-content: center;
  z-index: 2000;
}
.modal-overlay.hidden { display: none; }
.modal {
  background: #fff; border-radius: 10px; padding: 22px 26px;
  width: 480px; max-width: 92vw; max-height: 88vh; overflow-y: auto;
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.modal.small { width: 380px; }
.modal h2 { margin: 0 0 14px; font-size: 17px; }
.form-row { display: flex; gap: 12px; margin-bottom: 10px; }
.form-row label { flex: 1; }
.form-row.hidden { display: none; }
label { display: flex; flex-direction: column; font-size: 12px; color: var(--ink-soft); gap: 4px; font-weight: 600; }
label.hidden { display: none; }
.form-row-check { flex-direction: row !important; align-items: center; gap: 6px !important; margin: 6px 0; }
.form-row-check input[type="checkbox"] { width: auto; }
.form-full { margin-bottom: 10px; }
.form-full.hidden { display: none; }
.instrument-fields { background: var(--surface-sunken); border: 1px solid var(--line-soft); border-radius: 6px; padding: 10px 12px 2px; }
input, select, textarea {
  padding: 7px 9px; border: 1px solid var(--line); border-radius: 6px; color: var(--ink); background: #fff;
}
input:read-only { background: var(--surface-sunken); color: var(--ink-soft); }
textarea { resize: vertical; }
.photo-preview { margin-top: 6px; max-width: 100%; max-height: 140px; border-radius: 6px; border: 1px solid var(--line); }
.photo-preview.hidden { display: none; }
.modal-actions { display: flex; gap: 8px; margin-top: 16px; align-items: center; }
.spacer { flex: 1; }
.hint-text { font-size: 12px; color: var(--ink-soft); }
.required-mark { color: #c1272d; }
.error-text { color: #c1272d; font-weight: 600; }
.error-text.hidden { display: none; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 22px;
  font-size: 13px; z-index: 3000; box-shadow: 0 6px 20px rgba(0,0,0,0.3);
  transition: opacity 0.25s, transform 0.25s;
}
.toast.hidden { opacity: 0; pointer-events: none; transform: translate(-50%, 8px); }

/* ---------- Leaflet marker labels ---------- */
.point-icon {
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 10px;
  border: 2px solid #fff; border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0,0,0,0.4);
}
.tripod-icon {
  display: flex; align-items: center; justify-content: center;
  width: 24px; height: 24px;
  color: #fff; font-size: 15px;
  background: #2c333b;
  border: 2px solid #fff;
  border-radius: 4px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.4);
}
/* A small compass rose next to a traverse point, showing true north (the
   face never rotates - N is always up, matching the map) alongside a needle
   rotated to that point's own outgoing line's true azimuth, so the angle
   between the dashed line and true north reads at a glance. */
.compass-face {
  position: relative;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: rgba(255,255,255,0.88);
  border: 1.5px solid #2c333b;
  box-shadow: 0 1px 3px rgba(0,0,0,0.35);
}
.compass-n {
  position: absolute; top: 0px; left: 50%;
  transform: translateX(-50%);
  font-size: 6.5px; font-weight: 700; line-height: 1;
  color: #c1272d;
}
/* Fixed N-S / E-W reference axes, always upright (never rotate with the
   needle) - so the needle's angle away from true north/east reads visually
   against a cross, not just a bare circle. */
.compass-axis-v {
  position: absolute; top: 2px; left: 50%;
  width: 1px; height: 22px;
  margin-left: -0.5px;
  background: rgba(44,51,59,0.4);
}
.compass-axis-h {
  position: absolute; top: 50%; left: 2px;
  width: 22px; height: 1px;
  margin-top: -0.5px;
  background: rgba(44,51,59,0.4);
}
.compass-needle {
  position: absolute; top: 50%; left: 50%;
  width: 2px; height: 10px;
  margin-left: -1px; margin-top: -10px;
  background: #1f5f8b;
  transform-origin: 50% 100%;
}
.compass-needle::after {
  content: "";
  position: absolute; top: -3px; left: -2px;
  border-left: 3px solid transparent;
  border-right: 3px solid transparent;
  border-bottom: 4px solid #1f5f8b;
}
.point-label {
  background: rgba(255,255,255,0.92);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  color: var(--ink);
  border: 1px solid var(--line);
  white-space: nowrap;
}
.leaflet-popup-content { font-size: 12.5px; }
.leaflet-popup-content .pop-title { font-weight: 700; margin-bottom: 4px; font-size: 13px; }
.leaflet-popup-content .pop-row { margin-bottom: 2px; }
.leaflet-popup-content button {
  margin-top: 6px; padding: 4px 9px; border-radius: 5px; border: 1px solid var(--line);
  background: var(--surface-sunken); cursor: pointer; font-size: 12px;
}

.map-legend {
  background: rgba(255,255,255,0.95);
  padding: 8px 10px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  font-size: 11.5px;
  line-height: 1.7;
}
.map-legend .lg-item { display: flex; align-items: center; gap: 6px; }
.map-legend .lg-swatch { width: 12px; height: 12px; border-radius: 50%; display: inline-block; border: 1.5px solid #fff; box-shadow: 0 0 0 1px rgba(0,0,0,0.3); }
.map-legend .lg-line { width: 18px; height: 0; border-top: 3px solid; display: inline-block; }
.map-legend h4 { margin: 0 0 4px; font-size: 12px; }

.north-arrow {
  background: rgba(255,255,255,0.9);
  border-radius: 6px;
  padding: 4px 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  text-align: center;
  font-weight: 700;
  font-size: 13px;
  line-height: 1.1;
}

@media (max-width: 900px) {
  .workspace { flex-direction: column; height: auto; }
  .map-pane { height: 60vh; border-right: none; border-bottom: 1px solid var(--line); }
  .notebook-pane { min-height: 60vh; }
}