:root {
  --bg: #12141a;
  --panel: #1c1f26;
  --panel2: #252932;
  --border: #353b48;
  --text: #e9ecf1;
  --muted: #969dae;
  --accent: #8fb6dc;
  --accent2: #9fcbb1;
  --tag: #e2c79b;
  --radius: 10px;
  --font: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; background: var(--bg); color: var(--text); font-family: var(--font); overflow: hidden; }

#app { display: grid; grid-template-columns: 280px 1fr 240px; grid-template-rows: 52px 1fr; height: 100%; }

header {
  grid-column: 1 / -1;
  display: flex; align-items: center; gap: 16px;
  padding: 0 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
header .logo { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -0.02em; }
header .logo span.dot { width: 10px; height: 10px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent2)); }
header .sub { color: var(--muted); font-size: 12px; font-weight: 400; }
header .stats { margin-left: auto; display: flex; gap: 18px; font-size: 12px; color: var(--muted); }
header .stats b { color: var(--text); font-family: var(--mono); }

aside, .info-panel {
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  min-height: 0;
}
.info-panel { border-right: none; border-left: 1px solid var(--border); }

.panel-head {
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--border);
}
.panel-head h2 { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }

.search {
  margin: 10px 12px 0;
  display: flex; align-items: center; gap: 8px;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
}
.search input {
  flex: 1; border: none; background: transparent; color: var(--text); font-size: 13px; outline: none;
}
.search input::placeholder { color: var(--muted); }

#catChips {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  max-height: 120px; overflow-y: auto;
}
.chip {
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--muted);
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 999px;
  cursor: pointer;
}
.chip.active, .chip:hover { border-color: var(--accent); color: var(--text); background: rgba(143,182,220,.12); }

#assetList {
  flex: 1; overflow-y: auto; padding: 8px;
  display: flex; flex-direction: column; gap: 4px;
}
.asset {
  display: grid; grid-template-columns: 40px 1fr auto; gap: 8px; align-items: center;
  width: 100%; text-align: left;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  padding: 8px;
  border-radius: 8px;
  cursor: pointer;
}
.asset:hover { background: var(--panel2); }
.asset.active { border-color: var(--accent); background: rgba(143,182,220,.1); }
.asset .thumb { width: 40px; height: 40px; display: grid; place-items: center; background: var(--panel2); border-radius: 6px; }
.asset .thumb svg { width: 28px; height: 28px; }
.asset .meta { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.asset .meta b { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.asset .meta small { font-size: 11px; color: var(--muted); font-family: var(--mono); }
.asset .tag { font-size: 9px; font-weight: 700; color: #2b2c31; background: var(--tag); padding: 2px 5px; border-radius: 4px; }

.list-foot { padding: 8px 12px; font-size: 11px; color: var(--muted); border-top: 1px solid var(--border); }

#viewport { position: relative; min-width: 0; background: #0f1115; }
#canvas { width: 100%; height: 100%; display: block; }

.viewport-bar {
  position: absolute; left: 12px; right: 12px; bottom: 12px;
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  background: rgba(28,31,38,.88);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  font-size: 12px;
}
.viewport-bar label { display: flex; align-items: center; gap: 6px; color: var(--muted); cursor: pointer; }
.viewport-bar .sep { width: 1px; height: 18px; background: var(--border); }
.view-toggle { display: flex; gap: 4px; margin-left: auto; }
.view-toggle button {
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--muted);
  font-size: 11px;
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
}
.view-toggle button.active { border-color: var(--accent2); color: var(--text); background: rgba(159,203,177,.12); }

.info-panel .panel-body { padding: 14px; display: flex; flex-direction: column; gap: 14px; overflow-y: auto; }
.info-panel h3 { font-size: 20px; font-weight: 700; letter-spacing: -0.02em; }
.info-grid { display: grid; grid-template-columns: 90px 1fr; gap: 8px 10px; font-size: 12px; }
.info-grid dt { color: var(--muted); }
.info-grid dd { font-family: var(--mono); color: var(--text); word-break: break-all; }

.hint {
  font-size: 11px; line-height: 1.5; color: var(--muted);
  padding: 10px; background: var(--panel2); border-radius: 8px; border: 1px solid var(--border);
}

#loading {
  position: fixed; inset: 0; z-index: 100;
  display: grid; place-items: center;
  background: var(--bg);
  transition: opacity .4s;
}
#loading.hide { opacity: 0; pointer-events: none; }
#loading p { color: var(--muted); font-size: 13px; margin-top: 12px; }
.spinner {
  width: 32px; height: 32px; border-radius: 50%;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 960px) {
  #app { grid-template-columns: 1fr; grid-template-rows: 52px 1fr auto; }
  aside { display: none; }
  .info-panel { border-left: none; border-top: 1px solid var(--border); max-height: 180px; }
}