:root {
  color-scheme: dark;
  --bg: #071015;
  --panel: rgba(16, 30, 38, .92);
  --panel-2: #13252e;
  --line: #27404c;
  --text: #eef8f7;
  --muted: #8ea5ad;
  --mint: #52e3b6;
  --cyan: #58c9e9;
  --amber: #ffc66d;
  --red: #ff6678;
  --shadow: 0 18px 48px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: Inter, Pretendard, "Noto Sans KR", system-ui, sans-serif;
  background:
    radial-gradient(circle at 8% 0%, rgba(82, 227, 182, .12), transparent 29rem),
    radial-gradient(circle at 94% 16%, rgba(88, 201, 233, .11), transparent 30rem),
    var(--bg);
}

button, input, select, textarea { font: inherit; }
button, select, input, textarea { border-radius: 10px; }
button {
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  color: var(--text);
  background: #172a34;
  font-weight: 750;
  cursor: pointer;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}
button:hover:not(:disabled) { transform: translateY(-1px); border-color: #4f7482; background: #1d3540; }
button:disabled { opacity: .4; cursor: not-allowed; }
button.primary { border-color: rgba(82, 227, 182, .55); background: linear-gradient(135deg, #187b68, #145a70); }
button.danger { border-color: rgba(255, 102, 120, .7); background: #562833; }
button.full { width: 100%; }

input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #0b1920;
  color: var(--text);
  padding: 11px 12px;
  outline: none;
}
textarea { resize: vertical; line-height: 1.5; }
input:focus, select:focus, textarea:focus { border-color: var(--mint); box-shadow: 0 0 0 3px rgba(82, 227, 182, .09); }
input[type="range"] { padding: 0; accent-color: var(--mint); }
input[type="color"] { height: 52px; padding: 4px; }

.topbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding: 30px clamp(18px, 4vw, 64px) 22px;
  border-bottom: 1px solid rgba(58, 84, 96, .55);
  background: rgba(7, 16, 21, .78);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.eyebrow, .kicker { margin: 0 0 7px; color: var(--mint); font-size: 11px; font-weight: 900; letter-spacing: .16em; }
h1 { margin: 0; font-size: clamp(26px, 4vw, 43px); letter-spacing: -.04em; }
h2, h3, h4 { margin: 0; }
h2 { font-size: 21px; }
h3 { font-size: 17px; }
h4 { font-size: 14px; color: var(--muted); }
.subtitle { margin: 8px 0 0; color: var(--muted); }
.top-status { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.nav-link { display: inline-flex; align-items: center; padding: 7px 11px; border: 1px solid rgba(88, 201, 233, .5); border-radius: 999px; color: #cbeff7; background: rgba(88, 201, 233, .08); font-size: 12px; font-weight: 850; text-decoration: none; }
.nav-link:hover { background: rgba(88, 201, 233, .16); }
.badge, .state {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: #0c1a21;
  font-size: 12px;
  font-weight: 800;
}
.badge.good, .state.good { color: var(--mint); border-color: rgba(82, 227, 182, .45); }
.badge.bad, .state.bad { color: #ff9ba7; border-color: rgba(255, 102, 120, .45); }

.layout {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
  padding: 22px clamp(12px, 3vw, 46px) 60px;
  max-width: 1680px;
  margin: 0 auto;
}
.panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.connection-panel, .setup-panel, .body-panel, .console-panel { grid-column: 1 / -1; }
.camera-panel { grid-column: span 7; }
.voice-panel { grid-column: span 5; }
.chat-panel { grid-column: 1 / -1; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.section-head.compact { margin-bottom: 12px; }
.setup-grid { display: grid; grid-template-columns: 1fr; gap: 13px; }
.compact-connect-grid { display: grid; grid-template-columns: minmax(220px, 1fr) minmax(170px, .7fr) auto; align-items: end; gap: 10px; }
.header-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.field { display: grid; gap: 7px; color: var(--muted); font-size: 13px; font-weight: 700; }
.field.span-2 { grid-column: span 2; }
.field small, .hint { color: var(--muted); font-weight: 500; font-size: 12px; }
.notice { margin-top: 14px; padding: 12px 14px; border: 1px solid #38505b; border-radius: 12px; color: var(--muted); background: #0b1920; }
.notice.good { color: var(--mint); border-color: rgba(82, 227, 182, .45); }
.notice.bad { color: #ff9ba7; border-color: rgba(255, 102, 120, .5); }

.camera-stage {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #030709;
  margin-bottom: 12px;
}
.camera-stage video, .camera-stage img { width: 100%; height: 100%; object-fit: contain; display: none; }
.empty-state { position: absolute; inset: 0; display: grid; place-items: center; color: #67808a; text-align: center; padding: 20px; }
.button-row { display: flex; gap: 9px; margin: 11px 0; flex-wrap: wrap; }
.button-row > * { flex: 1 1 130px; }
.button-row.center { justify-content: center; }
.result { margin-top: 12px; min-height: 76px; padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: #0a171d; white-space: pre-wrap; line-height: 1.55; }
.muted { color: var(--muted); }

.voice-orb { width: 120px; height: 120px; margin: 16px auto 20px; display: grid; place-items: center; border-radius: 50%; background: radial-gradient(circle, rgba(82, 227, 182, .2), rgba(82, 227, 182, .02) 66%); border: 1px solid rgba(82, 227, 182, .25); }
.voice-orb span { width: 42px; height: 42px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 34px rgba(82, 227, 182, .45); }
.voice-orb.recording span { animation: pulse 1s infinite ease-in-out; background: var(--red); box-shadow: 0 0 34px rgba(255, 102, 120, .55); }
@keyframes pulse { 50% { transform: scale(1.38); opacity: .72; } }
.voice-answer-card { margin-top: 13px; padding: 14px; border: 1px solid rgba(88, 201, 233, .32); border-radius: 14px; background: linear-gradient(145deg, rgba(25, 51, 62, .88), rgba(8, 23, 30, .96)); }
.voice-answer-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 11px; }
.voice-answer-head > div { display: flex; align-items: center; gap: 9px; }
.answer-label { color: var(--cyan); font-size: 13px; font-weight: 900; }
.answer-state { padding: 4px 8px; border-radius: 999px; color: var(--muted); background: rgba(255, 255, 255, .05); font-size: 11px; font-weight: 800; }
.answer-state.working { color: var(--amber); background: rgba(255, 198, 109, .09); }
.answer-state.done { color: var(--mint); background: rgba(82, 227, 182, .09); }
.answer-state.error { color: #ff9ba7; background: rgba(255, 102, 120, .09); }
.voice-answer-text { min-height: 72px; max-height: 220px; overflow: auto; white-space: pre-wrap; line-height: 1.6; }

.inline-check { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 13px; }
.inline-check input { width: auto; }
.chat-history { height: 270px; overflow: auto; display: flex; flex-direction: column; gap: 9px; padding: 12px; border: 1px solid var(--line); border-radius: 14px; background: #071218; }
.message { max-width: min(78%, 850px); padding: 11px 13px; border-radius: 13px; line-height: 1.55; white-space: pre-wrap; }
.message.user { align-self: flex-end; background: #1d5e60; }
.message.assistant { align-self: flex-start; background: #182c36; }
.message.error { align-self: flex-start; color: #ffc0c8; background: #49242c; }
.chat-input { display: grid; grid-template-columns: 1fr auto; gap: 10px; margin-top: 11px; }
.chat-input button { min-width: 100px; }

.telemetry-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 10px; margin: 17px 0; }
.telemetry-grid article { min-height: 112px; display: flex; flex-direction: column; justify-content: center; padding: 13px; border: 1px solid var(--line); border-radius: 13px; background: var(--panel-2); }
.telemetry-grid span { color: var(--muted); font-size: 12px; }
.telemetry-grid strong { margin: 7px 0 2px; font-size: 23px; }
.telemetry-grid small { color: #77919b; }
.battery-level { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; width: 100%; max-width: 132px; margin: 6px 0; }
.battery-level i { height: 7px; border-radius: 999px; background: rgba(119, 145, 155, .2); transition: background .2s, box-shadow .2s; }
.battery-level[data-level="1"] i:nth-child(-n+1) { background: var(--red); }
.battery-level[data-level="2"] i:nth-child(-n+2) { background: var(--amber); }
.battery-level[data-level="3"] i:nth-child(-n+3) { background: var(--cyan); }
.battery-level[data-level="4"] i:nth-child(-n+4) { background: var(--mint); box-shadow: 0 0 8px rgba(82, 227, 182, .2); }
.telemetry-grid .battery-note { margin-top: 3px; font-size: 10px; color: #607984; }
.body-controls { display: grid; grid-template-columns: 1fr 1.25fr; gap: 12px; }
.control-card { padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: #0c1b22; }
.drive-pad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 13px 0; }
.drive-pad button:first-child { grid-column: 2; }
.drive-pad button:nth-child(2) { grid-column: 1; }
.drive-pad button:nth-child(3) { grid-column: 2; }
.drive-pad button:nth-child(4) { grid-column: 3; }
.drive-pad button:nth-child(5) { grid-column: 2; }
.range-field { display: grid; gap: 6px; margin: 11px 0; color: var(--muted); font-size: 13px; }
.range-field span { display: flex; justify-content: space-between; }
.range-field output { color: var(--text); font-weight: 800; }
.dual-range { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
.led-editors { display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }
.led-editor { display: grid; gap: 10px; padding: 13px; border: 1px solid var(--line); border-radius: 12px; }
.rgb-inputs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.rgb-inputs label { color: var(--muted); font-size: 11px; }
.rgb-inputs input { margin-top: 4px; padding: 7px; }

#logOutput { min-height: 210px; max-height: 360px; overflow: auto; margin: 0; padding: 14px; border-radius: 12px; background: #03090c; color: #a9c9ca; font: 12px/1.55 "Cascadia Mono", Consolas, monospace; white-space: pre-wrap; }
#toast { position: fixed; right: 18px; bottom: 18px; max-width: min(430px, calc(100vw - 36px)); padding: 12px 15px; border: 1px solid var(--line); border-radius: 12px; color: var(--text); background: #142933; box-shadow: var(--shadow); transform: translateY(20px); opacity: 0; pointer-events: none; transition: .2s ease; z-index: 20; }
#toast.show { transform: translateY(0); opacity: 1; }
#toast.bad { border-color: var(--red); background: #4c2530; }

@media (max-width: 1050px) {
  .camera-panel, .voice-panel { grid-column: 1 / -1; }
  .compact-connect-grid { grid-template-columns: 1fr 1fr auto; }
  .telemetry-grid { grid-template-columns: repeat(3, 1fr); }
  .body-controls { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .topbar { align-items: flex-start; flex-direction: column; position: static; }
  .top-status { justify-content: flex-start; }
  .layout { display: block; padding: 12px; }
  .panel { margin-bottom: 12px; padding: 15px; }
  .setup-grid, .compact-connect-grid, .led-editors, .dual-range { grid-template-columns: 1fr; }
  .field.span-2 { grid-column: auto; }
  .telemetry-grid { grid-template-columns: repeat(2, 1fr); }
  .chat-input { grid-template-columns: 1fr; }
  .message { max-width: 92%; }
}