/* ─── Reset & Base ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0d1117;
  --surface:     #161b22;
  --surface2:    #1c2330;
  --border:      #30363d;
  --border-h:    #484f58;
  --text:        #e6edf3;
  --text-muted:  #8b949e;
  --text-dim:    #4d5566;
  --green:       #3fb950;
  --green-dim:   #1a3a22;
  --blue:        #58a6ff;
  --blue-dim:    #0d2137;
  --red:         #f85149;
  --red-dim:     #3a1212;
  --orange:      #f97316;
  --orange-dim:  #3a1d07;
  --yellow:      #e3b341;
  --accent-nato: #4285f4;
  --accent-ru:   #ea4335;
  --mortar-col:  #4ade80;
  --target-col:  #f87171;
  --radius:      6px;
  --radius-lg:   10px;
  --panel-w:     320px;
  --header-h:    48px;
  --font-mono:   'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --font-ui:     'Inter', system-ui, sans-serif;
}

html, body { height: 100%; overflow: hidden; }

body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  line-height: 1.4;
  display: flex;
  flex-direction: column;
}

/* ─── Header ────────────────────────────────────────────────────────────────── */
header {
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  flex-shrink: 0;
  gap: 12px;
  z-index: 10;
}

.header-logo {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
  font-size: 20px;
}

header h1 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text);
}

.map-badge {
  margin-left: auto;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
}

/* ─── Layout ─────────────────────────────────────────────────────────────────── */
.app-container {
  display: flex;
  flex: 1;
  overflow: hidden;
}

#map-container {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#map {
  width: 100%;
  height: 100%;
  background: #0a1018;
}

/* ─── Mode Overlay ───────────────────────────────────────────────────────────── */
.mode-banner {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 900;
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  pointer-events: none;
  transition: opacity 0.2s;
  display: none;
}
.mode-banner.mortar { background: rgba(74,222,128,0.15); border: 1px solid var(--mortar-col); color: var(--mortar-col); }
.mode-banner.target { background: rgba(248,113,113,0.15); border: 1px solid var(--target-col); color: var(--target-col); }
.mode-banner.active { display: block; }

/* ─── Panel ──────────────────────────────────────────────────────────────────── */
.panel {
  width: var(--panel-w);
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  flex-shrink: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.panel-section {
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--border);
}
.panel-section:last-child { border-bottom: none; }

.section-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}

/* ─── Faction Selector ───────────────────────────────────────────────────────── */
.faction-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 10px;
}

.faction-btn {
  padding: 7px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
}
.faction-btn:hover { border-color: var(--border-h); color: var(--text); }
.faction-btn.active[data-faction="NATO"] { background: var(--blue-dim); border-color: var(--accent-nato); color: var(--accent-nato); }
.faction-btn.active[data-faction="RU"]   { background: var(--red-dim);  border-color: var(--accent-ru);   color: var(--accent-ru); }

/* ─── Select / Input ─────────────────────────────────────────────────────────── */
.form-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 7px;
}
.form-row label {
  width: 80px;
  flex-shrink: 0;
  color: var(--text-muted);
  font-size: 12px;
}

select, input[type="number"] {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 5px 8px;
  font-size: 12px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
  -webkit-appearance: none;
}
select:focus, input[type="number"]:focus { border-color: var(--blue); }
select option { background: var(--surface); }

input[type="number"]::-webkit-inner-spin-button { opacity: 0.4; }

/* ─── Charge Selector ────────────────────────────────────────────────────────── */
.charge-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.charge-label {
  width: 80px;
  flex-shrink: 0;
  color: var(--text-muted);
  font-size: 12px;
}
.charge-pills {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.charge-pill {
  min-width: 30px;
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
  line-height: 1;
}
.charge-pill:hover { border-color: var(--border-h); color: var(--text); }
.charge-pill.active { background: var(--green-dim); border-color: var(--green); color: var(--green); }
.charge-pill.auto   { background: var(--green-dim); border-color: var(--green); color: var(--green); }
.charge-pill.valid  { border-color: var(--border-h); color: var(--text-muted); }
.charge-pill.invalid { opacity: 0.35; cursor: not-allowed; }
.charge-pill.out-of-range { border-color: var(--orange); color: var(--orange); background: var(--orange-dim); }

/* ─── Placement ──────────────────────────────────────────────────────────────── */
.placement-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 10px;
}

.place-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 9px 6px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all 0.15s;
}
.place-btn:hover { border-color: var(--border-h); color: var(--text); }
.place-btn .icon { font-size: 18px; line-height: 1; }
.place-btn.mortar.active { border-color: var(--mortar-col); background: rgba(74,222,128,0.08); color: var(--mortar-col); }
.place-btn.target.active { border-color: var(--target-col); background: rgba(248,113,113,0.08); color: var(--target-col); }

.coords-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.coord-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: var(--radius);
  background: var(--surface2);
  border: 1px solid var(--border);
}
.coord-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.coord-dot.mortar { background: var(--mortar-col); }
.coord-dot.target { background: var(--target-col); }
.coord-label { color: var(--text-muted); font-size: 11px; width: 48px; flex-shrink: 0; }
.coord-value { color: var(--text); font-size: 11px; font-family: var(--font-mono); }

/* ─── Altitude ───────────────────────────────────────────────────────────────── */
.alt-diff {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border-radius: var(--radius);
  background: var(--surface2);
  border: 1px solid var(--border);
  margin-top: 4px;
}
.alt-diff-label { color: var(--text-muted); font-size: 11px; flex: 1; }
.alt-diff-val   { font-family: var(--font-mono); font-size: 12px; }
.alt-diff-val.pos  { color: var(--red); }
.alt-diff-val.neg  { color: var(--blue); }
.alt-diff-val.zero { color: var(--text-muted); }

/* ─── Results ────────────────────────────────────────────────────────────────── */
.results-section { flex: 1; }

.result-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.result-card.primary {
  border-color: var(--green);
  background: var(--green-dim);
}
.result-card.primary-blue {
  border-color: var(--blue);
  background: var(--blue-dim);
}
.result-card-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.result-card.primary .result-card-label { color: #6ee7a0; }
.result-card.primary-blue .result-card-label { color: #93c5fd; }
.result-val {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.result-card.primary .result-val      { color: var(--mortar-col); }
.result-card.primary-blue .result-val { color: var(--blue); }
.result-unit {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 3px;
}

.result-grid-sm {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.result-sm {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 7px 10px;
}
.result-sm-label {
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.result-sm-val {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.result-sm-unit { font-size: 10px; color: var(--text-muted); margin-left: 2px; }

/* Azimuth dual display */
.azimuth-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  margin-bottom: 6px;
}
.azimuth-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 4px;
}
.azimuth-label { font-size: 10px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); }
.azimuth-deg { font-family: var(--font-mono); font-size: 13px; color: var(--text-muted); }
.azimuth-mil { font-family: var(--font-mono); font-size: 24px; font-weight: 700; color: var(--yellow); }
.azimuth-unit { font-size: 11px; color: var(--text-muted); margin-left: 3px; }

/* ─── Warning ────────────────────────────────────────────────────────────────── */
.warning-box {
  margin-top: 8px;
  padding: 8px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--orange);
  background: var(--orange-dim);
  color: var(--orange);
  font-size: 11px;
  font-weight: 600;
  display: none;
}
.warning-box.visible { display: block; }

/* ─── Empty State ────────────────────────────────────────────────────────────── */
.empty-state {
  padding: 16px 12px;
  text-align: center;
  color: var(--text-dim);
  font-size: 12px;
  line-height: 1.6;
  display: block;
}
.empty-state.hidden { display: none; }

/* ─── Compass Rose ───────────────────────────────────────────────────────────── */
.compass-wrap {
  display: flex;
  justify-content: center;
  margin: 6px 0 4px;
}
.compass-svg { opacity: 0.85; }

/* ─── Divider ─────────────────────────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
}

/* ─── Scrollbar ──────────────────────────────────────────────────────────────── */
.panel::-webkit-scrollbar { width: 4px; }
.panel::-webkit-scrollbar-track { background: transparent; }
.panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ─── Leaflet Overrides ──────────────────────────────────────────────────────── */
.leaflet-container { background: #0a1018; font-family: var(--font-ui); }
.leaflet-control-zoom a {
  background: var(--surface) !important;
  border-color: var(--border) !important;
  color: var(--text) !important;
}
.leaflet-control-zoom a:hover { background: var(--surface2) !important; }

/* ─── Custom Markers ─────────────────────────────────────────────────────────── */
.marker-mortar, .marker-target {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px !important;
  height: 32px !important;
  border-radius: 50%;
  font-size: 16px;
  cursor: grab;
  transition: transform 0.1s;
  user-select: none;
  border: 2px solid;
  backdrop-filter: blur(2px);
}
.marker-mortar {
  background: rgba(74,222,128,0.2);
  border-color: var(--mortar-col);
  box-shadow: 0 0 10px rgba(74,222,128,0.4);
  color: var(--mortar-col);
}
.marker-target {
  background: rgba(248,113,113,0.2);
  border-color: var(--target-col);
  box-shadow: 0 0 10px rgba(248,113,113,0.4);
  color: var(--target-col);
}
.marker-mortar:active, .marker-target:active { transform: scale(0.9); cursor: grabbing; }

/* Fire line */
.fire-line { stroke-dasharray: 8 6; animation: dash 1s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -28; } }

/* Charge range rings */
.rring        { animation: rring-anim 3s linear infinite; }
.rring-on     { animation: rring-anim 1.4s linear infinite; }
@keyframes rring-anim { to { stroke-dashoffset: -28; } }

.rr-lbl {
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: rgba(9, 13, 20, 0.78);
  border: 1px solid #2d3d52;
  color: #3d5166;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.rr-lbl.rrl-on {
  border-color: #4ade80;
  color: #4ade80;
  background: rgba(74, 222, 128, 0.15);
}

/* Line label */
.line-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(9, 13, 20, 0.88);
  border: 1px solid #f97316;
  border-radius: 10px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: #e6edf3;
  white-space: nowrap;
  transform: translate(-50%, -50%);
  pointer-events: none;
  backdrop-filter: blur(3px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
.line-label .ll-sep { color: #f97316; opacity: 0.6; }

/* ─── Responsive: narrow panel ───────────────────────────────────────────────── */
@media (max-width: 700px) {
  :root { --panel-w: 100%; }
  .app-container { flex-direction: column; }
  #map-container { height: 50vh; }
  .panel { width: 100%; max-height: 50vh; }
}