/* ── Smart Bin Console — modern dark theme ───────────────── */
:root {
  --bg: #07090f;
  --bg-elev: #0c1018;
  --surface: #11161f;
  --surface-2: #161c28;
  --surface-3: #1d2433;
  --border: #232a3a;
  --border-soft: #1a2030;
  --text: #e8edf5;
  --text-dim: #8b95a8;
  --text-faint: #5b6478;
  --accent: #22c55e;
  --accent-2: #10b981;
  --accent-glow: rgba(34, 197, 94, 0.35);
  --warn: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  --recyclable: #22c55e;
  --organic: #f59e0b;
  --hazardous: #ef4444;
  --general: #6b7280;

  --radius: 14px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px var(--accent-glow);
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
  background-image:
    radial-gradient(circle at 15% 0%, rgba(34, 197, 94, 0.06), transparent 50%),
    radial-gradient(circle at 85% 100%, rgba(59, 130, 246, 0.05), transparent 50%);
  background-attachment: fixed;
}

button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
img { display: block; max-width: 100%; }

/* ── Layout ──────────────────────────────────────────────── */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 28px;
  background: rgba(12, 16, 24, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-soft);
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.brand-logo {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #02160a;
  font-size: 22px;
  font-weight: 800;
  border-radius: 12px;
  box-shadow: 0 4px 16px var(--accent-glow);
}
.brand h1 {
  margin: 0; font-size: 16px; font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-sub {
  margin: 0; font-size: 11px; color: var(--text-dim);
  letter-spacing: 0.05em; text-transform: uppercase;
}

.nav {
  display: flex; gap: 4px;
  margin-left: auto; margin-right: auto;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  padding: 4px;
  border-radius: 12px;
}
.nav-btn {
  background: transparent;
  border: 0;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-dim);
  font-weight: 500;
  display: inline-flex; align-items: center; gap: 8px;
  transition: var(--transition);
}
.nav-btn:hover { color: var(--text); background: var(--surface-2); }
.nav-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #02160a;
  box-shadow: 0 4px 12px var(--accent-glow);
}
.nav-btn .ico { font-size: 14px; }

.status {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--text-dim);
  font-family: var(--font-mono);
}
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-faint);
  box-shadow: 0 0 0 0 transparent;
}
.dot.ok { background: var(--accent); box-shadow: 0 0 12px var(--accent-glow); animation: pulse 2s infinite; }
.dot.err { background: var(--danger); }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
  50%      { box-shadow: 0 0 0 6px transparent; }
}

.main {
  flex: 1;
  padding: 28px;
  max-width: 1500px;
  width: 100%;
  margin: 0 auto;
}

/* ── Pages ───────────────────────────────────────────────── */
.page { display: none; animation: fadeIn 300ms ease; }
.page.active { display: block; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

.hero { margin-bottom: 24px; }
.hero h2 {
  margin: 0 0 6px;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff, #94a3b8);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p { margin: 0; color: var(--text-dim); }

/* ── Card ────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 22px;
  margin-bottom: 18px;
  transition: var(--transition);
}
.card:hover { border-color: var(--border); }
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.card-head h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 500;
  display: inline-flex; align-items: center; gap: 8px;
  transition: var(--transition);
}
.btn:hover { background: var(--surface-3); border-color: #2f3851; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #02160a;
  font-weight: 600;
  box-shadow: 0 4px 14px var(--accent-glow);
}
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-primary:disabled { background: var(--surface-2); color: var(--text-faint); box-shadow: none; transform: none; }
.btn-lg { padding: 12px 24px; font-size: 15px; }
.btn-ghost-danger { background: transparent; color: var(--danger); border-color: rgba(239,68,68,0.2); }
.btn-ghost-danger:hover { background: rgba(239,68,68,0.1); border-color: var(--danger); }

/* ── Inputs ──────────────────────────────────────────────── */
input[type="text"], textarea {
  width: 100%;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 10px;
  outline: 0;
  transition: var(--transition);
}
input[type="text"]:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

input[type="range"] {
  width: 100%; height: 4px; appearance: none;
  background: var(--border); border-radius: 2px; outline: 0; cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none; width: 16px; height: 16px;
  background: var(--accent); border-radius: 50%;
  cursor: pointer; box-shadow: 0 0 0 4px rgba(34,197,94,0.2);
  transition: var(--transition);
}
input[type="range"]::-webkit-slider-thumb:hover { box-shadow: 0 0 0 8px rgba(34,197,94,0.2); }

label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text);
}
label small { color: var(--text-dim); font-weight: 400; margin-left: 6px; }

/* ── Live page ───────────────────────────────────────────── */
.live-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 18px;
}
@media (max-width: 1100px) { .live-grid { grid-template-columns: 1fr; } }

.camera-card { padding: 0; overflow: hidden; }
.camera-card .card-head { padding: 22px 22px 0; margin-bottom: 14px; }

.camera-wrap {
  position: relative;
  background: #000;
  aspect-ratio: 16 / 9;
  display: grid; place-items: center;
  overflow: hidden;
}
#video, #video2 {
  width: 100%; height: 100%; object-fit: cover;
  transform: scaleX(-1);   /* mirror selfie-like */
}
#overlay {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  transform: scaleX(-1);
}
.cam-placeholder {
  position: absolute; inset: 0;
  display: grid; place-items: center; align-content: center;
  text-align: center;
  background: linear-gradient(135deg, #0a0e16, #131826);
  padding: 28px;
}
.cam-placeholder.hidden { display: none; }
.ph-icon { font-size: 48px; margin-bottom: 12px; opacity: 0.6; }
.cam-placeholder p { margin: 0 0 4px; font-size: 15px; }
.cam-placeholder small { color: var(--text-dim); font-size: 12px; }

.cam-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border-soft);
}
.cam-stats > div {
  padding: 14px 16px;
  display: flex; flex-direction: column; gap: 2px;
  border-right: 1px solid var(--border-soft);
}
.cam-stats > div:last-child { border-right: 0; }
.cam-stats .lbl {
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-dim); font-weight: 500;
}
.cam-stats > div > span:last-child {
  font-family: var(--font-mono); font-size: 18px; font-weight: 600;
}

.side-col { display: flex; flex-direction: column; gap: 18px; }
.side-col .card { margin-bottom: 0; }

.last-det { padding: 0; }
.last-empty {
  padding: 24px; text-align: center;
  color: var(--text-dim); font-size: 13px;
}
.last-det-row {
  display: flex; align-items: center; gap: 12px;
  padding: 14px;
  background: var(--bg-elev);
  border-radius: 12px;
}
.last-det-icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 10px;
  font-size: 22px;
}
.last-det-info { flex: 1; min-width: 0; }
.last-det-info .cls {
  font-weight: 600; font-size: 14px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.last-det-info .cat { font-size: 12px; color: var(--text-dim); }
.last-det-info .conf {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--accent); font-weight: 600;
}

.cat-list { display: flex; flex-direction: column; gap: 10px; }
.cat-row {
  display: flex; align-items: center; gap: 12px;
  padding: 12px;
  background: var(--bg-elev);
  border-radius: 12px;
  border-left: 3px solid var(--c, var(--accent));
}
.cat-row .cat-ico {
  font-size: 22px;
}
.cat-row .cat-text { flex: 1; min-width: 0; }
.cat-row .cat-name { font-weight: 600; font-size: 13px; }
.cat-row .cat-meta { font-size: 11px; color: var(--text-dim); margin-top: 2px; }

/* ── Step cards (Add page) ───────────────────────────────── */
.step-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.step-num {
  flex-shrink: 0;
  width: 36px; height: 36px;
  display: grid; place-items: center;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 50%;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent);
}
.step-body { flex: 1; }

/* ── Category picker ─────────────────────────────────────── */
.cat-picker {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}
.cat-pill {
  display: flex; align-items: center; gap: 12px;
  padding: 14px;
  background: var(--bg-elev);
  border: 2px solid var(--border-soft);
  border-radius: 12px;
  cursor: pointer;
  transition: var(--transition);
}
.cat-pill:hover { border-color: var(--c, var(--accent)); }
.cat-pill.active {
  border-color: var(--c, var(--accent));
  background: color-mix(in srgb, var(--c, var(--accent)) 12%, var(--bg-elev));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--c, var(--accent)) 15%, transparent);
}
.cat-pill .ico { font-size: 22px; }
.cat-pill .txt { font-weight: 600; font-size: 13px; }
.cat-pill .sub { font-size: 11px; color: var(--text-dim); }

/* ── Method picker ───────────────────────────────────────── */
.method-picker {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
@media (max-width: 900px) { .method-picker { grid-template-columns: 1fr; } }

.method-card {
  padding: 22px;
  background: var(--bg-elev);
  border: 2px solid var(--border-soft);
  border-radius: 16px;
  cursor: pointer;
  transition: var(--transition);
}
.method-card:hover { transform: translateY(-2px); border-color: var(--accent); }
.method-card.active {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(34,197,94,0.08), var(--bg-elev));
  box-shadow: 0 0 0 4px var(--accent-glow);
}
.m-icon { font-size: 36px; margin-bottom: 10px; }
.method-card h3 { margin: 0 0 6px; font-size: 17px; font-weight: 700; }
.method-card p { margin: 0 0 6px; color: var(--text-dim); font-size: 13px; }
.method-card small { font-size: 11px; color: var(--text-faint); }

/* ── Action panels ───────────────────────────────────────── */
.action-card { animation: fadeIn 300ms ease; }
.hidden { display: none !important; }

.row { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.row label { white-space: nowrap; margin: 0; min-width: 110px; }

.progress {
  display: flex; align-items: center; gap: 12px;
  margin-top: 14px;
  padding: 14px;
  background: var(--bg-elev);
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}
.spinner {
  width: 16px; height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
  margin-top: 14px;
}
.preview-grid img {
  aspect-ratio: 1; width: 100%; object-fit: cover;
  border-radius: 8px;
  background: var(--bg-elev);
  transition: var(--transition);
}
.preview-grid img:hover { transform: scale(1.04); }

/* ── Camera (Add → Camera mode) ──────────────────────────── */
.cam2-wrap {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 14px;
}
.snap-result {
  display: flex; gap: 16px;
  margin-top: 16px;
  padding: 14px;
  background: var(--bg-elev);
  border-radius: 14px;
  align-items: center;
}
.snap-result img {
  max-width: 320px; border-radius: 10px;
}
.snap-info { display: flex; flex-direction: column; gap: 8px; flex: 1; }

/* ── Dataset page ────────────────────────────────────────── */
.cat-tabs {
  display: flex; gap: 8px; margin-bottom: 22px;
  flex-wrap: wrap;
}
.cat-tab {
  padding: 8px 14px;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-dim);
  transition: var(--transition);
}
.cat-tab:hover { color: var(--text); border-color: var(--border); }
.cat-tab.active {
  color: var(--text);
  background: var(--surface-2);
  border-color: var(--c, var(--accent));
  box-shadow: 0 0 0 1px var(--c, var(--accent)) inset;
}
.cat-tab .count {
  font-family: var(--font-mono); font-size: 11px;
  background: var(--bg-elev);
  padding: 1px 7px; border-radius: 999px;
  color: var(--text-dim);
}

.cls-block { margin-bottom: 28px; }
.cls-head {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-soft);
}
.cls-head .badge {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  border-radius: 8px;
  background: color-mix(in srgb, var(--c, var(--accent)) 15%, transparent);
  font-size: 14px;
}
.cls-head h3 { margin: 0; font-size: 15px; font-weight: 600; }
.cls-head .cls-count { color: var(--text-dim); font-size: 12px; font-family: var(--font-mono); }

.img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}
.img-tile {
  position: relative;
  aspect-ratio: 1;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-elev);
  transition: var(--transition);
}
.img-tile img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.img-tile:hover img { transform: scale(1.06); }

.img-tile .src-badge {
  position: absolute; top: 6px; left: 6px;
  font-size: 10px; padding: 2px 7px;
  background: rgba(0,0,0,0.6); border-radius: 4px;
  font-family: var(--font-mono);
  backdrop-filter: blur(4px);
}

.img-tile .del-btn {
  position: absolute; top: 6px; right: 6px;
  width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(239, 68, 68, 0.9);
  color: #fff;
  border: 0;
  cursor: pointer;
  opacity: 0;
  transform: translateY(-4px);
  transition: var(--transition);
  backdrop-filter: blur(8px);
  font-size: 14px;
  line-height: 1;
}
.img-tile:hover .del-btn { opacity: 1; transform: none; }
.img-tile .del-btn:hover { background: var(--danger); transform: scale(1.1); }

.empty-state {
  text-align: center; padding: 60px 20px;
  color: var(--text-dim);
}
.empty-state .ico { font-size: 48px; margin-bottom: 12px; opacity: 0.4; }

.hero-row {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 16px;
}

/* ── Dropzone (upload mode) ──────────────────────────────── */
.dropzone {
  display: block;
  padding: 36px 24px;
  background: var(--bg-elev);
  border: 2px dashed var(--border);
  border-radius: 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}
.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 6%, var(--bg-elev));
  transform: translateY(-2px);
}
.dz-icon { font-size: 38px; margin-bottom: 10px; opacity: 0.7; }
.dz-title { font-weight: 600; font-size: 15px; margin-bottom: 4px; }
.dz-sub { font-size: 12px; color: var(--text-dim); }

.upload-preview { margin-top: 18px; }
.up-count {
  font-family: var(--font-mono); font-size: 12px; color: var(--text-dim);
  margin-bottom: 8px;
}

/* ── Manage page ─────────────────────────────────────────── */
.manage-card {
  border-left: 4px solid var(--c, var(--accent));
  margin-bottom: 16px;
}
.manage-head {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 16px;
}
.manage-head .icon-big {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: color-mix(in srgb, var(--c, var(--accent)) 18%, transparent);
  border-radius: 12px;
  font-size: 22px;
}
.manage-head .info { flex: 1; }
.manage-head h3 { margin: 0; font-size: 17px; font-weight: 700; }
.manage-head .meta {
  font-size: 12px; color: var(--text-dim);
  font-family: var(--font-mono);
}

.class-chips {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 14px;
}
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 6px 6px 12px;
  background: var(--bg-elev);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  font-size: 13px;
  transition: var(--transition);
}
.chip:hover { border-color: var(--border); }
.chip .name { font-weight: 500; }
.chip-thr {
  width: 44px; font-size: 11px; text-align: center;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 4px; color: var(--text-2); padding: 1px 2px;
}
.chip-actions {
  display: flex; gap: 2px; margin-left: 4px;
}
.chip-btn {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  background: transparent;
  border: 0; border-radius: 50%;
  cursor: pointer;
  color: var(--text-dim);
  font-size: 11px;
  transition: var(--transition);
}
.chip-btn:hover { background: var(--surface-3); color: var(--text); }
.chip-btn.del:hover { background: rgba(239,68,68,0.15); color: var(--danger); }

.add-class-row {
  display: flex; gap: 8px;
  margin-top: 4px;
}
.add-class-row input { flex: 1; padding: 8px 12px; font-size: 13px; }
.add-class-row .btn { padding: 8px 14px; font-size: 13px; }

/* Move-to dropdown overlay */
.move-menu {
  position: absolute;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 4px;
  z-index: 60;
  min-width: 160px;
  animation: fadeIn 150ms ease;
}
.move-menu button {
  display: flex; align-items: center; gap: 8px;
  width: 100%; padding: 8px 12px;
  background: transparent; border: 0; cursor: pointer;
  border-radius: 6px;
  color: var(--text); text-align: left; font-size: 13px;
}
.move-menu button:hover { background: var(--surface-3); }
.move-menu button:disabled { opacity: 0.4; cursor: not-allowed; }

/* Cls block: actions */
.cls-head .cls-actions { margin-left: auto; display: flex; gap: 6px; }

/* ── Toast ──────────────────────────────────────────────── */
.toasts {
  position: fixed; bottom: 28px; right: 28px;
  z-index: 100;
  display: flex; flex-direction: column; gap: 10px;
}
.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 12px 18px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  min-width: 240px;
  animation: slideIn 250ms ease;
}
.toast.err { border-left-color: var(--danger); }
.toast.warn { border-left-color: var(--warn); }
@keyframes slideIn {
  from { transform: translateX(20px); opacity: 0; }
  to   { transform: none; opacity: 1; }
}

/* ── Test ESP32 panel ────────────────────────────────────── */
.muted { color: var(--text-dim); }
.badge-pill {
  display: inline-flex; align-items: center;
  padding: 3px 10px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 11px; font-family: var(--font-mono);
  color: var(--text-dim);
}
.badge-pill.live { color: var(--accent); border-color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }

/* ── ESP32 Link card ──────────────────────────────── */
.link-status {
  display: flex; flex-direction: column; gap: 8px;
  margin-bottom: 12px;
}
.link-dot-row {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px;
}
.link-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--text-faint); flex: none;
}
.link-dot.ok  { background: var(--accent); box-shadow: 0 0 8px var(--accent-glow); animation: pulse 2s infinite; }
.link-dot.off { background: var(--warn); }
.link-dot.err { background: var(--danger); }
.link-label { color: var(--text-dim); }
.link-val {
  margin-left: auto; font-family: var(--font-mono);
  font-size: 11px; color: var(--text); opacity: 0.85;
}
.link-log {
  background: var(--bg-elev);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 6px;
  max-height: 220px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 2px;
}
.link-log-empty {
  color: var(--text-faint); font-size: 12px;
  text-align: center; padding: 18px 8px;
}
.log-row {
  display: flex; align-items: baseline; gap: 8px;
  padding: 4px 8px; border-radius: 6px;
  font-size: 12px; line-height: 1.35;
  border-left: 2px solid transparent;
}
.log-row .log-ico { flex: none; width: 14px; text-align: center; opacity: 0.9; }
.log-row .log-text { flex: 1; word-break: break-word; }
.log-row .log-time { flex: none; font-family: var(--font-mono); font-size: 10px; color: var(--text-faint); }
.log-row.dir-tx  { border-left-color: var(--info);   background: color-mix(in srgb, var(--info) 7%, transparent); }
.log-row.dir-rx  { border-left-color: var(--accent); background: color-mix(in srgb, var(--accent) 7%, transparent); }
.log-row.dir-sys { color: var(--text-dim); }
.log-row.kind-error { border-left-color: var(--danger); color: var(--danger); }
.log-row.kind-ack .log-ico { color: var(--accent); }

.test-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px;
}
.test-btn {
  padding: 10px;
  background: var(--bg-elev);
  border: 1px solid var(--border-soft);
  border-left: 3px solid var(--c, var(--accent));
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
  display: flex; flex-direction: column; gap: 2px;
  color: var(--text);
  transition: var(--transition);
}
.test-btn:hover { background: var(--surface-2); transform: translateX(2px); }
.test-btn .ico { font-size: 18px; }
.test-btn .lbl { font-weight: 600; font-size: 12px; }
.test-btn .sub { font-size: 10px; color: var(--text-dim); font-family: var(--font-mono); }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface-3); border-radius: 999px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #2c344a; }