:root {
  /* accent (overridable by Tweaks) */
  --accent:      #2563EB;
  --accent-h:    #3F7DF2;
  --accent-bg:   rgba(37,99,235,.13);
  --accent-line: rgba(37,99,235,.45);

  /* light surfaces (default) */
  --bg:        #EEF1F5;
  --surface:   #FFFFFF;
  --surface-2: #F3F5F9;
  --surface-3: #E9EDF3;
  --bd:        #E2E7EF;
  --bd-2:      #D2D9E3;

  --t1: #131A26;
  --t2: #3A4658;
  --t3: #6B7686;
  --t4: #9AA4B2;

  --green: #16A34A; --green-bg: rgba(22,163,74,.12);
  --red:   #DC2626; --red-bg:   rgba(220,38,38,.10);
  --blue:  #2563EB; --blue-bg:  rgba(37,99,235,.10);
  --yellow:#D97706;

  --shadow-sm: 0 1px 2px rgba(20,30,50,.05), 0 1px 3px rgba(20,30,50,.04);
  --shadow:    0 4px 16px rgba(20,30,50,.08);
  --shadow-lg: 0 18px 48px rgba(20,30,50,.20);

  /* layout tokens (direction a — Console, default) */
  --radius:    13px;
  --radius-sm: 9px;
  --panel-w:   384px;
  --gap:       14px;
  --pad:       20px;

  color-scheme: light;
}

html[data-theme="dark"] {
  --bg:        #0C1322;
  --surface:   #141E33;
  --surface-2: #1B273F;
  --surface-3: #243250;
  --bd:        #2A3852;
  --bd-2:      #33445F;

  --t1: #F1F5FB;
  --t2: #C6D0DE;
  --t3: #8C99AC;
  --t4: #5E6B7F;

  --green: #34D17F; --green-bg: rgba(52,209,127,.14);
  --red:   #FF7A72; --red-bg:   rgba(255,122,114,.14);
  --blue:  #5B9BFF; --blue-bg:  rgba(91,155,255,.14);
  --yellow:#FFB454;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.35);
  --shadow:    0 6px 20px rgba(0,0,0,.35);
  --shadow-lg: 0 20px 50px rgba(0,0,0,.5);
  color-scheme: dark;
}

html[data-direction="b"] {
  --radius: 19px; --radius-sm: 13px; --panel-w: 420px; --gap: 18px; --pad: 24px;
  --bg: #F4F2EE;
  --shadow-sm: 0 2px 8px rgba(40,35,25,.05);
  --shadow:    0 8px 28px rgba(40,35,25,.10);
}
html[data-direction="b"][data-theme="dark"] { --bg:#11192A; }

.rf-tile-switcher {
  background: var(--surface);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  padding: 3px;
  display: flex;
  gap: 2px;
  box-shadow: var(--shadow-sm);
}
.rf-tile-switcher button {
  background: transparent;
  border: none;
  padding: 5px 10px;
  border-radius: 6px;
  font-size: .76rem;
  font-weight: 600;
  color: var(--t3);
  cursor: pointer;
  font-family: inherit;
}
.rf-tile-switcher button:hover { color: var(--t1); background: var(--surface-2); }
.rf-tile-switcher button.active { background: var(--accent); color: #fff; }

.rf-chart-tip {
  position: absolute;
  display: none;
  background: var(--surface);
  border: 1px solid var(--bd);
  border-radius: 8px;
  padding: 8px 10px;
  box-shadow: var(--shadow);
  font-size: .76rem;
  color: var(--t2);
  pointer-events: none;
  z-index: 100;
  min-width: 150px;
  max-width: 200px;
}
.rf-chart-tip .t-row { display: flex; justify-content: space-between; gap: 14px; padding: 1px 0; }
.rf-chart-tip .t-row b { color: var(--t1); font-weight: 700; }
.rf-chart-tip .t-coord { margin-top: 6px; padding-top: 6px; border-top: 1px solid var(--bd); color: var(--t3); font-family: 'IBM Plex Mono', monospace; font-size: .68rem; }

.result-card[data-size="sm"] .los-chart-wrap canvas { height: 140px !important; }
.result-card[data-size="sm"] .los-summary { font-size: .78rem; gap: 6px; }
.result-card[data-size="sm"] .los-summary > * { padding: 6px 8px; }
.result-card[data-size="md"] .los-chart-wrap canvas { height: 220px !important; }
.result-card[data-size="lg"] .los-chart-wrap canvas { height: 320px !important; }

html[data-direction="c"] {
  --radius: 10px; --radius-sm: 8px; --panel-w: 332px; --gap: 11px; --pad: 15px;
  --shadow: 0 10px 30px rgba(20,30,50,.14);
}

* , *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
img { max-width: 100%; height: auto; }

body {
  font-family: 'IBM Plex Sans Thai', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--t2);
  font-size: 0.94rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
.mono { font-family: 'IBM Plex Mono', 'SF Mono', Menlo, Consolas, monospace; letter-spacing: .01em; }
button { font-family: inherit; cursor: pointer; color: inherit; }
input, textarea, select { font-family: inherit; font-size: 16px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
svg { display: block; }

.app { height: 100dvh; display: flex; flex-direction: column; overflow: hidden; }

.appbar {
  position: relative;
  flex: 0 0 auto;
  height: 58px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 18px;
  background: var(--surface);
  border-bottom: 1px solid var(--bd);
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 11px; min-width: 0; }
.brand-mark {
  width: 38px; height: 38px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  background: var(--accent);
  border-radius: 11px;
  box-shadow: 0 4px 12px var(--accent-bg);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-size: 1.06rem; font-weight: 700; color: var(--t1); letter-spacing: -.2px; }
.brand-name em { font-style: normal; color: var(--accent); }
.brand-sub { font-size: .68rem; color: var(--t3); margin-top: 2px; letter-spacing: .2px; }

/* Tabs — perfectly centered in the bar */
.tabs {
  position: absolute;
  left: 50%; transform: translateX(-50%);
  display: flex;
  gap: 3px;
  padding: 4px;
  background: var(--surface-2);
  border: 1px solid var(--bd);
  border-radius: calc(var(--radius-sm) + 4px);
}
.tab {
  display: inline-flex; align-items: center; gap: 8px;
  border: none; background: transparent;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--t3);
  font-weight: 600; font-size: .86rem;
  transition: background .15s, color .15s;
}
.tab:hover:not(.active) { color: var(--t1); }
.tab.active { background: var(--accent); color: #fff; box-shadow: 0 2px 8px var(--accent-bg); }
.tab svg { opacity: .95; }

html[data-direction="b"] .tabs { background: transparent; border: none; gap: 6px; padding: 0; }
html[data-direction="b"] .tab { padding: 9px 20px; }

.appbar-right { margin-left: auto; }
.theme-btn {
  margin-left: auto;
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  color: var(--t2);
  transition: background .15s, color .15s;
}
.theme-btn:hover { background: var(--surface-3); color: var(--t1); }
.theme-btn .ic-moon { display: none; }
html[data-theme="dark"] .theme-btn .ic-sun { display: none; }
html[data-theme="dark"] .theme-btn .ic-moon { display: block; }

.stage { position: relative; flex: 1; min-height: 0; }
.pane { position: absolute; inset: 0; display: block; }

.workspace {
  height: 100%;
  display: grid;
  grid-template-columns: var(--panel-w) 1fr;
  gap: var(--gap);
  padding: var(--gap);
  min-height: 0;
}
.panel {
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  padding-right: 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--bd-2) transparent;
}
.panel::-webkit-scrollbar { width: 8px; }
.panel::-webkit-scrollbar-thumb { background: var(--bd-2); border-radius: 4px; border: 2px solid transparent; background-clip: content-box; }

.canvas { min-height: 0; display: flex; flex-direction: column; gap: var(--gap); }
.los-canvas { gap: var(--gap); }

.card {
  background: var(--surface);
  border: 1px solid var(--bd);
  border-radius: var(--radius);
  padding: var(--pad);
  box-shadow: var(--shadow-sm);
}
html[data-direction="c"] .panel > .card { box-shadow: var(--shadow); }
.card-head { margin-bottom: 16px; }
.card-title { font-size: 1rem; font-weight: 700; color: var(--t1); letter-spacing: -.1px; }
.card-sub { font-size: .78rem; color: var(--t3); margin-top: 5px; line-height: 1.55; }

.field { margin-bottom: 13px; }
.field-label {
  display: block;
  font-size: .7rem; font-weight: 600;
  color: var(--t3);
  margin-bottom: 6px;
  text-transform: uppercase; letter-spacing: .6px;
}
.field-hint { font-size: .72rem; color: var(--t4); margin-top: 4px; }

.input, .select {
  width: 100%;
  background: var(--surface-2);
  color: var(--t1);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  padding: 11px 13px;
  outline: none;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.input::placeholder { color: var(--t4); }
.input:focus, .select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-bg); background: var(--surface); }
.input[readonly] { background: var(--surface-2); color: var(--t2); border-style: dashed; cursor: default; }
.input[readonly]:focus { border-color: var(--bd-2); box-shadow: none; }

.select {
  appearance: none; -webkit-appearance: none;
  cursor: pointer;
  padding-right: 34px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7686' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat; background-position: right 12px center;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: .9rem; font-weight: 600;
  width: 100%;
  transition: filter .15s, transform .08s, background .15s, border-color .15s;
}
.btn:active { transform: translateY(1px); }
.btn svg { flex-shrink: 0; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 4px 14px var(--accent-bg); }
.btn-primary:hover { background: var(--accent-h); }
.btn-primary:disabled { opacity: .55; cursor: not-allowed; box-shadow: none; }
.btn-ghost { background: var(--surface); color: var(--t1); border-color: var(--bd-2); }
.btn-ghost:hover { background: var(--surface-2); }
.btn.is-ok { background: var(--green); color: #fff; }

.btn-icon-mini {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--bd);
  border-radius: 8px;
  color: var(--t2);
}
.btn-icon-mini:hover { background: var(--accent-bg); border-color: var(--accent-line); color: var(--accent); }

/* Examples */
.example-row { display: flex; align-items: center; flex-wrap: wrap; gap: 7px; margin: 4px 0 2px; }
.example-label { font-size: .72rem; color: var(--t4); margin-right: 2px; }
.example-btn {
  background: var(--surface-2);
  border: 1px solid var(--bd);
  color: var(--t2);
  font-size: .78rem; font-weight: 500;
  padding: 5px 12px;
  border-radius: 999px;
  transition: all .14s;
}
.example-btn:hover { background: var(--accent-bg); border-color: var(--accent-line); color: var(--accent); }

.profile-list { display: flex; flex-direction: column; gap: 8px; }
.profile-item {
  display: flex; align-items: center; gap: 11px;
  background: var(--surface-2);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  cursor: pointer;
  transition: background .13s, border-color .13s, box-shadow .13s;
}
.profile-item:hover { background: var(--surface-3); border-color: var(--bd-2); }
.profile-item.is-editing { border-color: var(--accent-line); box-shadow: 0 0 0 1px var(--accent-line); }
.profile-item-open {
  width: 28px; height: 28px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid var(--bd-2); color: var(--t3); border-radius: 7px;
}
.profile-item-open:hover { background: var(--accent-bg); border-color: var(--accent-line); color: var(--accent); }
.profile-item-name {
  font-weight: 600; color: var(--t1); font-size: .86rem; flex-shrink: 0;
  width: 84px; min-width: 84px; font-family: inherit;
  background: transparent; border: 1px solid transparent; border-radius: 6px;
  padding: 2px 5px; margin: -2px -2px -2px -5px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.profile-item-name[readonly] { pointer-events: none; cursor: pointer; }
.profile-item-name.editing { background: var(--surface); border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-bg); cursor: text; pointer-events: auto; outline: none; }
.profile-item-coord { flex: 1; font-family: 'IBM Plex Mono', monospace; font-size: .76rem; color: var(--t2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.profile-item-meta { font-size: .68rem; color: var(--t4); flex-shrink: 0; }
.profile-item-del { background: transparent; border: 1px solid var(--bd-2); color: var(--red); border-radius: 7px; padding: 0; width: 28px; height: 28px; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.profile-item-del:hover { background: var(--red-bg); border-color: var(--red); }

/* Empty state (first-profile guidance) */
.profile-empty, .project-overlay-empty {
  padding: 16px;
  background: var(--surface-2);
  border: 1px dashed var(--bd-2);
  border-radius: var(--radius-sm);
  font-size: .8rem; color: var(--t3); line-height: 1.55;
}
.project-overlay-empty { text-align: center; padding: 14px; }
.empty-title { font-weight: 700; color: var(--t1); font-size: .88rem; margin-bottom: 9px; }
.empty-steps { list-style: none; counter-reset: s; display: flex; flex-direction: column; gap: 7px; margin-bottom: 10px; }
.empty-steps li { counter-increment: s; position: relative; padding-left: 28px; color: var(--t2); font-size: .8rem; }
.empty-steps li::before {
  content: counter(s);
  position: absolute; left: 0; top: -1px;
  width: 19px; height: 19px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent); color: #fff;
  border-radius: 50%; font-size: .68rem; font-weight: 700;
}
.empty-steps b { color: var(--accent); }
.empty-note { font-size: .74rem; color: var(--t4); border-top: 1px solid var(--bd); padding-top: 9px; }

.los-points { display: flex; flex-direction: column; gap: 11px; }
.los-point { background: var(--surface-2); border: 1px solid var(--bd); border-radius: var(--radius-sm); padding: 13px; }
.los-point-head { display: flex; align-items: center; gap: 10px; margin-bottom: 11px; }
.los-point-tag {
  width: 28px; height: 28px;
  background: var(--accent); color: #fff;
  font-weight: 700; font-size: .85rem;
  border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.los-point-tag.b { background: var(--blue); }
.los-point-tag.c { background: var(--green); }
.los-point-tag.d { background: #8B5CF6; }
.los-point-head .input { flex: 1; }
.los-point-remove { background: transparent; border: 1px solid var(--bd-2); color: var(--red); border-radius: 7px; padding: 5px 11px; font-size: .78rem; flex-shrink: 0; }
.los-point-remove:hover { background: var(--red-bg); border-color: var(--red); }

.los-actions { display: flex; flex-direction: column; gap: 9px; margin-top: 14px; }
#btn-add-point { min-height: 40px; font-size: .85rem; }

/* Project save */
.project-save { display: flex; gap: 9px; margin-bottom: 15px; }
.project-save .input { flex: 1; }
.project-save .btn { width: auto; flex-shrink: 0; padding: 11px 16px; }

.project-overlay-list { display: flex; flex-direction: column; gap: 7px; max-height: 240px; overflow-y: auto; }
.project-overlay-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 11px;
  background: var(--surface-2);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  cursor: pointer; user-select: none;
  font-size: .82rem;
  transition: background .12s, border-color .12s;
}
.project-overlay-item:hover { background: var(--surface-3); }
.project-overlay-item:has(input:checked) { border-color: var(--accent-line); }
.project-overlay-item input[type="checkbox"] { width: 16px; height: 16px; margin: 0; cursor: pointer; accent-color: var(--accent); flex-shrink: 0; }
.project-overlay-item-swatch { width: 12px; height: 12px; border-radius: 4px; flex-shrink: 0; }
.project-overlay-item-name { flex: 1; color: var(--t1); font-weight: 600; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.project-overlay-item-meta { font-size: .68rem; color: var(--t4); flex-shrink: 0; }
.project-overlay-item-edit, .project-overlay-item-del {
  background: transparent; border: 1px solid transparent;
  color: var(--t4);
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 7px; flex-shrink: 0;
}
.project-overlay-item-edit:hover { color: var(--accent); background: var(--accent-bg); }
.project-overlay-item-del:hover { color: var(--red); background: var(--red-bg); }

.map-card {
  background: var(--surface);
  border: 1px solid var(--bd);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.map-fill { flex: 1; }
.map-toolbar {
  flex: 0 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--bd);
}
.map-toolbar-title { font-size: .8rem; font-weight: 600; color: var(--t1); }
.result-source { font-size: .66rem; color: var(--t4); }
.leaflet-map { flex: 1; min-height: 0; width: 100%; background: var(--surface-2); }

/* LOS result */
.result-card { flex: 0 0 auto; }
.result-body { padding: 14px; overflow: auto; flex: 1; min-height: 0; }
.los-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(108px, 1fr)); gap: 9px; margin-bottom: 13px; }
.los-warn {
  grid-column: 1 / -1;
  display: flex; align-items: center; gap: 9px;
  padding: 10px 13px;
  background: color-mix(in srgb, var(--yellow) 12%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--yellow) 45%, var(--bd));
  border-radius: var(--radius-sm);
  color: var(--yellow); font-size: .8rem; font-weight: 600; line-height: 1.4;
}
.los-warn svg { flex-shrink: 0; }
.los-warn span { color: var(--t1); font-weight: 500; }
.los-stat { background: var(--surface-2); border: 1px solid var(--bd); border-radius: var(--radius-sm); padding: 10px 13px; }
.los-stat-label { font-size: .66rem; color: var(--t3); text-transform: uppercase; letter-spacing: .6px; }
.los-stat-value { font-size: 1.02rem; font-weight: 700; color: var(--t1); margin-top: 3px; display: flex; align-items: center; gap: 7px; }
.los-stat-value .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--t4); flex-shrink: 0; }
.los-stat.clear { border-color: color-mix(in srgb, var(--green) 40%, var(--bd)); }
.los-stat.blocked { border-color: color-mix(in srgb, var(--red) 40%, var(--bd)); }
.los-stat.clear .los-stat-value { color: var(--green); }
.los-stat.blocked .los-stat-value { color: var(--red); }
.los-stat.clear .dot { background: var(--green); }
.los-stat.blocked .dot { background: var(--red); }

.los-chart-wrap { background: var(--surface-2); border: 1px solid var(--bd); border-radius: var(--radius-sm); padding: 12px; overflow-x: auto; }
#los-chart { width: 100%; max-width: 100%; display: block; }

.spinner { display: inline-block; width: 15px; height: 15px; border: 2px solid currentColor; border-top-color: transparent; border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.leaflet-container { background: var(--surface-2) !important; font-family: inherit; }
.leaflet-control-zoom a { background: var(--surface) !important; color: var(--t1) !important; border-color: var(--bd) !important; }
.leaflet-control-zoom a:hover { background: var(--surface-2) !important; }
.leaflet-control-attribution { background: rgba(255,255,255,.82) !important; color: #475569 !important; font-size: 10px !important; }
.leaflet-control-attribution a { color: var(--accent) !important; }
html[data-theme="dark"] .leaflet-control-attribution { background: rgba(0,0,0,.5) !important; color: #cbd5e1 !important; }

/* markers */
.mgrs-marker {
  width: 22px; height: 22px;
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  background: var(--accent);
  border: 3px solid #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,.35);
  cursor: grab;
}
.los-marker {
  width: 32px !important; height: 32px !important;
  border-radius: 50%;
  background: var(--accent); color: #fff;
  font-weight: 700; font-size: .92rem;
  display: flex !important; align-items: center; justify-content: center;
  border: 3px solid #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,.4);
  cursor: grab;
}
.los-marker.b { background: var(--blue); }
.los-marker.c { background: var(--green); }
.los-marker.d { background: #8B5CF6; }
.los-marker:active { cursor: grabbing; }
.overlay-marker {
  width: 24px; height: 24px;
  border-radius: 50%;
  color: #fff; font-weight: 700; font-size: .72rem;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,.4);
  opacity: .9;
}
.saved-marker {
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent); border: 2.5px solid #fff;
  box-shadow: 0 1px 5px rgba(0,0,0,.4); cursor: pointer;
}
.saved-marker-label {
  position: absolute; top: 17px; left: 50%; transform: translateX(-50%);
  white-space: nowrap; pointer-events: none;
  background: var(--surface); color: var(--t1); border: 1px solid var(--bd);
  padding: 1px 6px; border-radius: 6px;
  font-size: .68rem; font-weight: 600; box-shadow: var(--shadow-sm);
}

.rf-toast {
  position: fixed; bottom: 26px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--surface);
  border: 1px solid var(--bd);
  color: var(--t1);
  padding: 13px 20px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  z-index: 10000;
  opacity: 0; pointer-events: none;
  transition: opacity .22s ease, transform .22s ease;
  max-width: min(90vw, 460px);
  font-size: .88rem; font-weight: 500; text-align: center;
}
.rf-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }
.rf-toast-error { border-left: 4px solid var(--red); }
.rf-toast-warn  { border-left: 4px solid var(--yellow); }
.rf-toast-ok    { border-left: 4px solid var(--green); }

@media (max-width: 920px) {
  .brand-sub { display: none; }
  .tabs { position: static; transform: none; }
  .appbar { gap: 10px; }
  .workspace { grid-template-columns: 1fr; overflow-y: auto; }
  .panel { overflow: visible; }
  .canvas { min-height: 520px; }
  .map-fill { min-height: 340px; }
}
@media (max-width: 560px) {
  .tab span { display: none; }
  .tab { padding: 8px 12px; }
  .grid-2 { grid-template-columns: 1fr; gap: 0; }
}

.card.collapsible { padding-top: calc(var(--pad) - 2px); }
.card-toggle {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;
  width: 100%; background: none; border: none; padding: 0; text-align: left;
}
.card-headings { display: flex; flex-direction: column; min-width: 0; }
.card-toggle .card-title { display: flex; align-items: center; }
.card-toggle .card-sub { margin-top: 5px; }
.card-toggle .chev { color: var(--t3); flex-shrink: 0; margin-top: 3px; transition: transform .22s ease; }
.card.collapsible[data-collapsed="true"] .card-toggle .chev { transform: rotate(-90deg); }
.card.collapsible .card-body {
  margin-top: 16px;
  display: grid; grid-template-rows: 1fr;
  transition: grid-template-rows .32s cubic-bezier(.4,0,.2,1), margin-top .32s ease, opacity .25s ease;
}
.card.collapsible .card-body > * { min-height: 0; overflow: hidden; }
.card.collapsible[data-collapsed="true"] .card-body { grid-template-rows: 0fr; margin-top: 0; opacity: 0; }
.card-count {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 21px; height: 21px; padding: 0 7px; margin-left: 8px;
  background: var(--accent); color: #fff;
  border-radius: 999px; font-size: .72rem; font-weight: 700;
}
.card-count.is-zero { background: var(--surface-3); color: var(--t4); }

.los-canvas { position: relative; }
.map-toolbar-right { display: flex; align-items: center; gap: 8px; }
#los-result-collapse .chev { transition: transform .22s ease; }

.result-card {
  position: absolute; top: 14px; left: 14px; z-index: 600;
  width: min(440px, calc(100% - 28px));
  height: 320px;
  min-width: 290px; min-height: 130px;
  max-width: calc(100% - 28px); max-height: calc(100% - 28px);
  display: none;
  resize: both; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.los-canvas.has-result .result-card { display: flex; }
.result-card .map-toolbar { cursor: move; touch-action: none; }
.result-card.dragging { opacity: .97; }

.los-canvas.result-collapsed .result-card { height: auto !important; min-height: 0; resize: none; }
.los-canvas.result-collapsed .result-body { display: none; }
.los-canvas.result-collapsed #los-result-collapse .chev { transform: rotate(180deg); }

.disclaimer {
  position: fixed; inset: 0; z-index: 12000;
  display: flex; align-items: center; justify-content: center; padding: 24px;
  background: rgba(12, 19, 34, .55);
  -webkit-backdrop-filter: blur(5px); backdrop-filter: blur(5px);
  animation: rf-fade .25s ease both;
}
.disclaimer.is-hidden { display: none; }
.disclaimer-box {
  width: min(460px, 100%);
  background: var(--surface); border: 1px solid var(--bd);
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  padding: 28px 26px 24px; text-align: center;
  animation: rf-pop .3s cubic-bezier(.34,1.4,.5,1) both;
}
.disclaimer-icon {
  width: 52px; height: 52px; margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--yellow); background: color-mix(in srgb, var(--yellow) 14%, transparent);
  border-radius: 50%;
}
.disclaimer-title { font-size: 1.05rem; font-weight: 700; color: var(--t1); margin-bottom: 14px; letter-spacing: -.1px; }
.disclaimer-text { font-size: .86rem; color: var(--t2); line-height: 1.6; margin-bottom: 11px; }
.disclaimer-text strong { color: var(--t1); font-weight: 600; }
.disclaimer-box .btn { margin-top: 10px; }
@keyframes rf-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes rf-pop { from { opacity: 0; transform: translateY(14px) scale(.97); } to { opacity: 1; transform: none; } }

.los-point-tag { border: none; cursor: pointer; background: #2563EB; transition: filter .12s; }
.los-point-tag.b { background: #16A34A; }
.los-point-tag.c { background: #8B5CF6; }
.los-point-tag.d { background: #F59E0B; }
.los-point-tag:hover { filter: brightness(1.08); }

.marker-style {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin: -2px 0 12px; padding: 11px;
  background: var(--surface); border: 1px solid var(--bd); border-radius: var(--radius-sm);
}
.marker-style[hidden] { display: none; }
.swatch-row { display: flex; gap: 7px; flex-wrap: wrap; }
.swatch {
  width: 24px; height: 24px; border-radius: 50%; padding: 0;
  border: 2px solid var(--surface); box-shadow: 0 0 0 1px var(--bd);
  cursor: pointer; transition: transform .1s;
}
.swatch:hover { transform: scale(1.12); }
.swatch.is-active { box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--t2); }
.abbrev-input { width: 60px; text-align: center; text-transform: uppercase; font-weight: 700; }

.switch-row {
  display: flex; align-items: center; gap: 10px;
  margin-top: 13px; padding: 11px 13px;
  background: var(--surface-2); border: 1px solid var(--bd); border-radius: var(--radius-sm);
  cursor: pointer; user-select: none; font-size: .85rem; color: var(--t1); font-weight: 500;
}
.switch-row input { width: 17px; height: 17px; accent-color: var(--accent); cursor: pointer; }

.los-marker-label {
  position: absolute; top: 38px; left: 50%; transform: translateX(-50%);
  white-space: nowrap;
  background: var(--surface); color: var(--t1); border: 1px solid var(--bd);
  padding: 2px 8px; border-radius: 7px;
  font-size: .72rem; font-weight: 600;
  box-shadow: var(--shadow-sm); pointer-events: none;
}

.ws-card { display: flex; flex-direction: column; gap: 13px; }
.ws-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.ws-new-btn { width: auto; flex-shrink: 0; min-height: 40px; padding: 9px 15px; font-size: .85rem; }

.ws-list { display: flex; flex-direction: column; gap: 10px; }

/* Empty state */
.ws-empty {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  gap: 9px; padding: 30px 20px;
  background: var(--surface-2); border: 1px dashed var(--bd-2); border-radius: var(--radius-sm);
}
.ws-empty-icon {
  width: 52px; height: 52px; display: flex; align-items: center; justify-content: center;
  background: var(--accent-bg); color: var(--accent); border-radius: 14px; margin-bottom: 2px;
}
.ws-empty-title { font-size: 1rem; font-weight: 700; color: var(--t1); }
.ws-empty-sub { font-size: .8rem; color: var(--t3); max-width: 260px; line-height: 1.5; margin-bottom: 6px; }
.ws-empty .btn { width: auto; padding: 11px 20px; }

/* Project card */
.ws-project {
  border: 1px solid var(--bd); border-radius: var(--radius-sm);
  background: var(--surface-2); overflow: hidden;
  transition: border-color .15s, box-shadow .15s;
}
.ws-project.is-active { border-color: var(--accent-line); box-shadow: 0 0 0 1px var(--accent-line), var(--shadow-sm); }

.ws-project-head {
  display: flex; align-items: center; gap: 11px;
  padding: 12px 13px; cursor: pointer; user-select: none;
}
.ws-project-head:hover { background: var(--surface-3); }
.ws-proj-dot { width: 11px; height: 11px; border-radius: 50%; flex-shrink: 0; }
.ws-proj-info { display: flex; flex-direction: column; min-width: 0; flex: 1; gap: 2px; }
.ws-proj-name {
  width: 100%; font-weight: 700; color: var(--t1); font-size: .9rem; font-family: inherit;
  background: transparent; border: 1px solid transparent; border-radius: 6px;
  padding: 3px 6px; margin: -3px -6px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ws-proj-name[readonly] { pointer-events: none; cursor: pointer; }
.ws-proj-name.editing { background: var(--surface); border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-bg); cursor: text; pointer-events: auto; }
.ws-proj-name.editing:focus { outline: none; }
.ws-rename:hover { color: var(--accent); background: var(--accent-bg); border-color: var(--accent-line); }
.ws-proj-meta { font-size: .7rem; font-weight: 600; color: var(--t3); display: flex; align-items: center; }
.ws-proj-meta.ready { color: var(--green); }
.ws-proj-meta.pending { color: var(--yellow); }

.ws-icon {
  width: 30px; height: 30px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid transparent; border-radius: 8px;
  color: var(--t4); transition: all .13s;
}
.ws-icon:hover { background: var(--surface); color: var(--t2); border-color: var(--bd); }
.ws-overlay.on { background: var(--accent-bg); color: var(--accent); border-color: var(--accent-line); }
.ws-del:hover { background: var(--red-bg); color: var(--red); border-color: var(--red); }
.ws-chev { color: var(--t4); flex-shrink: 0; transition: transform .22s ease; }
.ws-project.is-active .ws-chev { transform: rotate(180deg); }

/* Card body (open project) */
.ws-card-body-wrap {
  display: grid; grid-template-rows: 0fr;
  transition: grid-template-rows .32s cubic-bezier(.4,0,.2,1);
}
.ws-project.is-active .ws-card-body-wrap { grid-template-rows: 1fr; }
.ws-card-body {
  overflow: hidden; min-height: 0;
  padding: 0 13px 0;
  background: var(--surface);
  transition: padding .32s ease;
}
.ws-project.is-active .ws-card-body { padding: 4px 13px 14px; }
.ws-points { display: flex; flex-direction: column; gap: 11px; margin-top: 12px; }
.ws-point { background: var(--surface-2); border: 1px solid var(--bd); border-radius: var(--radius-sm); padding: 12px; }
.ws-point-row { display: flex; align-items: center; gap: 9px; margin-bottom: 11px; }
.ws-tag {
  width: 30px; height: 30px; flex-shrink: 0;
  border: none; border-radius: 8px; color: #fff; font-weight: 700; font-size: .85rem;
  cursor: pointer; transition: filter .12s;
}
.ws-tag:hover { filter: brightness(1.08); }
.ws-name { flex: 1; }
.ws-point-del {
  width: 30px; height: 30px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid var(--bd-2); color: var(--red);
  border-radius: 8px;
}
.ws-point-del:hover { background: var(--red-bg); border-color: var(--red); }

.ws-tag-pop {
  display: grid; grid-template-rows: 0fr;
  opacity: 0; margin-bottom: 0;
  transition: grid-template-rows .28s cubic-bezier(.4,0,.2,1), opacity .22s ease, margin-bottom .28s ease;
}
.ws-tag-pop > .ws-tag-pop-inner,
.ws-tag-pop > .swatch-row,
.ws-tag-pop > .abbrev-input { min-height: 0; }
.ws-tag-pop.open {
  grid-template-rows: 1fr;
  opacity: 1; margin-bottom: 11px;
}
.ws-tag-pop-inner {
  overflow: hidden;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px; border: 1px solid var(--bd); border-radius: var(--radius-sm);
  background: var(--surface);
}

.ws-point-grid { display: flex; flex-direction: column; gap: 10px; }
.ws-point-grid .field { margin-bottom: 0; }
.ws-mgrs-row { display: grid; grid-template-columns: minmax(0, 2.6fr) minmax(0, 1fr); gap: 11px; }
.ws-mgrs-row .field { margin-bottom: 0; min-width: 0; }
.ws-mgrs-row .input { width: 100%; }
@media (max-width: 640px) { .ws-mgrs-row { grid-template-columns: 1fr; gap: 0; } }
.ws-mgrs.is-invalid { border-color: var(--red); box-shadow: 0 0 0 3px var(--red-bg); }

.ws-card-actions { display: flex; flex-direction: column; gap: 9px; margin-top: 13px; }
.ws-add-point { min-height: 40px; font-size: .85rem; }