:root {
  --paper: #f3f7f9;
  --panel: #ffffff;
  --panel-2: #eaf1f5;
  --ink: #132430;
  --ink-soft: #3c5364;
  --slate: #5b7284;
  --line: #cfdde5;
  --line-strong: #a9bfcc;
  --blue: #0f62e6;
  --blue-soft: #dce9fd;
  --magenta: #c22e6f;
  --green: #148a5c;
  --green-soft: #d9f0e6;
  --amber: #9a6200;
  --amber-soft: #f7ead0;
  --red: #bb2124;
  --red-soft: #fbe3e3;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body, #app { height: 100%; }

body {
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink);
  overflow: hidden;
}

.mono { font-family: "IBM Plex Mono", Consolas, monospace; }

#app { display: flex; flex-direction: column; }

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: var(--panel);
  border-bottom: 2px solid var(--ink);
  z-index: 1000;
}

.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; color: inherit; }
.brand:hover h1 { color: var(--blue); }
.logo {
  background: var(--blue);
  border-radius: 6px;
  padding: 5px 6px;
  display: inline-flex;
  align-self: center;
}
.logo svg { display: block; }
h1 {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 21px; letter-spacing: 2px; font-weight: 700;
  text-transform: uppercase;
}
.tagline {
  font-family: "IBM Plex Mono", Consolas, monospace;
  color: var(--slate); font-size: 11px; letter-spacing: 1.5px;
  text-transform: uppercase;
}

/* read-only observer view (/share) */
body.viewer #mission-panel,
body.viewer #zones-panel,
body.viewer #btn-demo,
body.viewer #btn-share { display: none; }
.viewer-badge {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 10px; letter-spacing: 2px; text-transform: uppercase;
  background: var(--blue-soft); color: var(--blue);
  padding: 4px 12px; border-radius: 3px;
}

.head-right { display: flex; align-items: center; gap: 10px; }
.demo-btn { flex: none; padding: 6px 14px; }
.demo-btn.on { background: var(--blue); border-color: var(--blue); color: #fff; }

.conn {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--amber);
  background: var(--amber-soft);
  padding: 5px 12px;
  border-radius: 3px;
}
.conn.ok { color: var(--green); background: var(--green-soft); }
.conn.err { color: var(--red); background: var(--red-soft); }
.conn.ok::before {
  content: ""; display: inline-block; width: 7px; height: 7px;
  border-radius: 50%; background: var(--green); margin-right: 7px;
}

.layout { flex: 1; display: flex; min-height: 0; }

#sidebar {
  width: 316px;
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

#sidebar h2 {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--slate);
  margin-bottom: 10px;
  font-weight: 500;
  border-bottom: 1px solid var(--line);
  padding-bottom: 6px;
}

#map { flex: 1; background: #e8eef2; position: relative; }

.leaflet-container { font: inherit; }
.leaflet-tooltip {
  font-family: "IBM Plex Mono", Consolas, monospace; font-size: 11px;
  border: 1px solid var(--line-strong);
}

.drone-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-strong);
  border-radius: 4px;
  padding: 10px 12px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: border-color .12s;
}
.drone-card:hover { border-color: var(--line-strong); }
.drone-card.selected {
  border-color: var(--blue);
  border-left-color: var(--blue);
  background: #f7faff;
}

.drone-card .row1 {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 7px;
}
.drone-card .name {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 700; font-size: 16px; letter-spacing: 1px;
}

.state-badge {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 3px 8px;
  border-radius: 3px;
  background: var(--panel-2);
  color: var(--slate);
}
.state-badge.enroute, .state-badge.takeoff { background: var(--green-soft); color: var(--green); }
.state-badge.rtl, .state-badge.landing { background: var(--amber-soft); color: var(--amber); }
.state-badge.hold { background: var(--red-soft); color: var(--red); }

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 4px;
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 10px;
  color: var(--slate);
  font-variant-numeric: tabular-nums;
}
.stats b { color: var(--ink); font-weight: 600; }

.battery-bar {
  height: 4px;
  background: var(--panel-2);
  margin-top: 9px;
  overflow: hidden;
}
.battery-bar > div { height: 100%; background: var(--green); transition: width .3s; }
.battery-bar > div.low { background: #d97706; }
.battery-bar > div.critical { background: var(--red); }

.panel { border-top: 1px solid var(--line); padding-top: 14px; }

.hint { font-size: 12px; color: var(--slate); margin-bottom: 12px; line-height: 1.5; }

.btn-row { display: flex; gap: 6px; margin-bottom: 6px; }

.btn {
  flex: 1;
  padding: 8px 2px;
  font-size: 11px;
  white-space: nowrap;
  font-weight: 600;
  border-radius: 4px;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
  transition: background .12s, border-color .12s;
}
.btn:hover:not(:disabled) { border-color: var(--ink); }
.btn:disabled { opacity: .4; cursor: default; }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn.primary:hover:not(:disabled) { background: #0b4fbd; }
.btn.danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn.danger:hover:not(:disabled) { background: #9a1b1e; }
.btn.warn { background: #b45309; border-color: #b45309; color: #fff; }
.btn.warn:hover:not(:disabled) { background: #92400e; }
.btn.active { border-color: var(--blue); color: var(--blue); box-shadow: inset 0 0 0 1px var(--blue); }

.mode-row { margin-bottom: 10px; }
.mode-btn.active {
  background: var(--blue); border-color: var(--blue); color: #fff;
  box-shadow: none;
}

.video-wrap {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
}
.video-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; }
.video-offline[hidden] { display: none; }
.video-offline {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #93a8b8;
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.detections {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
  min-height: 24px;
}
.det-chip {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 10px;
  padding: 3px 9px;
  border-radius: 3px;
  background: var(--blue-soft);
  color: var(--blue);
}

.alerts { display: flex; flex-direction: column; gap: 4px; margin-top: 10px; max-height: 130px; overflow-y: auto; }
.alert-row {
  display: flex; align-items: center; gap: 8px;
  font-size: 11px; padding: 6px 10px;
  background: var(--red-soft); color: var(--red);
  border-left: 3px solid var(--red);
  border-radius: 3px; font-weight: 600;
}
.alert-row .t { font-family: "IBM Plex Mono", Consolas, monospace; font-weight: 400; opacity: .8; }

.logs { display: flex; flex-direction: column; gap: 5px; max-height: 180px; overflow-y: auto; }
.log-row {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; padding: 7px 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
}
.log-row .meta { color: var(--slate); font-family: "IBM Plex Mono", Consolas, monospace; font-size: 10px; }
.log-row b { color: var(--ink); }
.log-row a {
  color: var(--blue); text-decoration: none;
  font-size: 10px; letter-spacing: 1px; text-transform: uppercase;
  font-family: "IBM Plex Mono", Consolas, monospace;
}
.log-row a:hover { text-decoration: underline; }
.log-actions { display: flex; gap: 10px; }

.traffic-icon { filter: drop-shadow(0 1px 2px rgba(19, 36, 48, .45)); }

.conflict-banner {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  z-index: 1001;
  background: var(--red); color: #fff;
  font-family: "IBM Plex Mono", Consolas, monospace; font-size: 11px;
  letter-spacing: 1px;
  padding: 8px 16px; border-radius: 3px;
  box-shadow: 0 2px 10px rgba(19, 36, 48, .3);
  white-space: nowrap;
}

.utm-toast {
  position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%);
  z-index: 1001;
  background: var(--ink); color: #b7e6d2;
  font-family: "IBM Plex Mono", Consolas, monospace; font-size: 11px;
  padding: 8px 16px; border-radius: 3px;
  box-shadow: 0 2px 10px rgba(19, 36, 48, .3);
  white-space: nowrap;
}

.replay-banner {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  z-index: 1000;
  background: var(--ink); color: #eef4f8;
  font-family: "IBM Plex Mono", Consolas, monospace; font-size: 11px;
  padding: 8px 14px; border-radius: 3px;
  box-shadow: 0 2px 10px rgba(19, 36, 48, .3);
  display: flex; align-items: center; gap: 10px; white-space: nowrap;
}
.replay-banner button {
  background: #3c5364; color: #fff; border: none;
  border-radius: 3px; padding: 2px 10px; font-size: 10px; cursor: pointer;
}
.replay-banner button:hover { background: var(--red); }

.drone-icon { filter: drop-shadow(0 1px 3px rgba(19, 36, 48, .4)); }

.wp-label {
  background: transparent;
  border: none;
  box-shadow: none;
  color: #fff;
  font-weight: 700;
  font-size: 11px;
}

@media (max-width: 760px) {
  .layout { flex-direction: column; }
  #sidebar { width: 100%; max-height: 45vh; border-right: none; border-bottom: 1px solid var(--line); }
  .tagline { display: none; }
}