:root {
  --bg: #0e1013;
  --bg-soft: #14171c;
  --bg-raise: #1a1e24;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #e9eaee;
  --muted: #8b919c;
  --faint: #5c626c;
  --accent: #f0b942;
  --accent-soft: rgba(240, 185, 66, 0.14);
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, "PingFang SC", "Helvetica Neue", "Segoe UI", sans-serif;
}

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

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---------- top bar ---------- */

.topbar {
  height: 52px;
  flex: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(20, 23, 28, 0.6);
  backdrop-filter: blur(12px);
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 20px; height: 20px; color: var(--accent); }
.brand-name { font-weight: 600; letter-spacing: 0.02em; }

.topbar-actions { display: flex; gap: 8px; }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  background: transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s, transform 0.05s;
  user-select: none;
}
.btn:active { transform: translateY(1px); }
.btn svg { width: 15px; height: 15px; }
.btn:disabled { opacity: 0.35; cursor: default; pointer-events: none; }

.btn.primary { background: var(--accent); color: #1d1605; font-weight: 600; }
.btn.primary:hover { background: #f6c75f; }

.btn.ghost { border-color: var(--line-strong); }
.btn.ghost:hover { background: rgba(255, 255, 255, 0.05); }

.btn.mini { height: 26px; padding: 0 9px; font-size: 12px; border-radius: 6px; }
.btn.mini svg { width: 12px; height: 12px; }

.linklike {
  background: none; border: none; padding: 0;
  color: var(--accent); font: inherit; cursor: pointer;
}
.linklike:hover { text-decoration: underline; }

kbd {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--bg-raise);
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 1px 6px;
}

/* ---------- layout ---------- */

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

/* ---------- stage ---------- */

.stage {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  min-width: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 22px 22px;
}

.dropzone {
  width: min(520px, 90%);
  border: 1.5px dashed var(--line-strong);
  border-radius: 8px;
  padding: 56px 32px;
  text-align: center;
  color: var(--muted);
  transition: border-color 0.2s, background 0.2s;
  cursor: pointer;
}
.dropzone:hover { border-color: rgba(240, 185, 66, 0.5); background: rgba(240, 185, 66, 0.03); }
.drop-icon { width: 40px; height: 40px; color: var(--faint); margin-bottom: 16px; }
.drop-title { font-size: 15px; color: var(--text); margin-bottom: 8px; }
.drop-sub { font-size: 13px; }

#view {
  max-width: 100%;
  max-height: 100%;
  border-radius: 4px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.55), 0 0 0 1px var(--line);
  cursor: crosshair;
}

.hidden { display: none !important; }

.stage-draghint {
  position: absolute;
  inset: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--accent);
  border-radius: 8px;
  background: rgba(240, 185, 66, 0.08);
  color: var(--accent);
  font-size: 16px;
  font-weight: 600;
  pointer-events: none;
  z-index: 5;
}

/* ---------- panel ---------- */

.panel {
  width: 320px;
  flex: none;
  border-left: 1px solid var(--line);
  background: var(--bg-soft);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.group {
  padding: 16px;
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.group.grow { flex: 1; border-bottom: none; }

.group-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--faint);
  text-transform: uppercase;
}
.group-label.row { display: flex; align-items: center; justify-content: space-between; }

textarea {
  width: 100%;
  resize: vertical;
  min-height: 52px;
  background: var(--bg-raise);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
  padding: 9px 11px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.chip:hover { color: var(--accent); border-color: rgba(240, 185, 66, 0.5); background: var(--accent-soft); }

/* ---------- options ---------- */

.optrow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.optname { font-size: 13px; display: flex; flex-direction: column; gap: 2px; }
.optdesc { font-size: 11px; color: var(--faint); }

.seg {
  display: flex;
  background: var(--bg-raise);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 2px;
}
.seg button {
  width: 34px;
  height: 24px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
}
.seg button.on { background: var(--accent); color: #1d1605; font-weight: 700; }

.toggle { cursor: pointer; }
.toggle input { display: none; }
.switch {
  flex: none;
  width: 34px;
  height: 20px;
  border-radius: 999px;
  background: var(--bg-raise);
  border: 1px solid var(--line-strong);
  position: relative;
  transition: background 0.2s, border-color 0.2s;
}
.switch::after {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--muted);
  transition: transform 0.2s, background 0.2s;
}
.toggle input:checked + .switch { background: var(--accent-soft); border-color: var(--accent); }
.toggle input:checked + .switch::after { transform: translateX(14px); background: var(--accent); }

/* ---------- detections ---------- */

.dets { display: flex; flex-direction: column; gap: 8px; }
.dets-empty {
  color: var(--faint);
  font-size: 13px;
  text-align: center;
  padding: 24px 0;
  border: 1px dashed var(--line);
  border-radius: 8px;
}

.det {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 11px;
  cursor: pointer;
  transition: border-color 0.15s, opacity 0.15s;
}
.det:hover { border-color: var(--line-strong); }
.det.off { opacity: 0.45; }

.det-badge {
  flex: none;
  width: 22px; height: 22px;
  border-radius: 6px;
  background: var(--accent);
  color: #1d1605;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.det.off .det-badge { background: var(--faint); color: var(--bg); }

.det-body { flex: 1; min-width: 0; }
.det-data {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.det-meta { font-size: 11px; color: var(--faint); margin-top: 2px; }

.det-eye { flex: none; width: 16px; height: 16px; color: var(--muted); }
.det.off .det-eye { color: var(--faint); }

/* ---------- toast ---------- */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translate(-50%, 12px);
  background: var(--bg-raise);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 9px 16px;
  font-size: 13px;
  color: var(--text);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 50;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- narrow screens ---------- */

@media (max-width: 860px) {
  body { overflow: auto; }
  .layout { flex-direction: column; }
  .stage { min-height: 50vh; }
  .panel { width: 100%; border-left: none; border-top: 1px solid var(--line); }
}