:root {
  --bg-0: #05070d;
  --bg-1: rgba(13,18,30,.78);
  --bg-2: rgba(20,27,43,.82);
  --bg-3: rgba(255,255,255,.045);
  --bg-4: rgba(255,255,255,.075);
  --border: rgba(139,157,190,.16);
  --border-soft: rgba(139,157,190,.1);
  --border-bright: rgba(130,220,255,.32);
  --text-0: #eaf4ff;
  --text-1: #c7d5ea;
  --text-2: #99a8bd;
  --text-3: #7c8ba1;
  --text-4: #566278;
  --accent-1: #72e7ff;
  --accent-2: #9c7cff;
  --accent-grad: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  --accent-grad-soft: rgba(114,231,255,.12);
  --on-accent: #04070d;
  --success: #63f6b3;
  --danger: #ff6f91;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 6px 20px rgba(0,0,0,.22);
  --shadow-md: 0 16px 40px rgba(0,0,0,.28);
  --shadow-lg: 0 28px 70px rgba(0,0,0,.4);
  --shadow-glow: 0 0 0 1px var(--border-bright), 0 0 24px rgba(114,231,255,.14);
  --blur: blur(18px);
  --ease: cubic-bezier(.25,.8,.25,1);
  font-size: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background:
    radial-gradient(circle at 74% 8%, rgba(114,231,255,.08), transparent 26%),
    radial-gradient(circle at 20% 82%, rgba(156,124,255,.07), transparent 28%),
    linear-gradient(135deg, #03050a, #070a12 55%, #05070d);
  color: var(--text-1);
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  letter-spacing: .005em;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: relative;
}
/* Faint grid, echoes the reference dashboard's ambient depth cue —
   masked out toward the bottom so it doesn't fight with panel content. */
#app::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at 50% 0%, rgba(0,0,0,.7), transparent 70%);
}

:focus-visible {
  outline: 2px solid var(--accent-1);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: var(--bg-1);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
  position: relative;
  z-index: 3;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon {
  width: 36px; height: 36px; border-radius: 12px;
  background: rgba(114,231,255,.05); border: 1px solid var(--border-bright);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; color: var(--accent-1); font-weight: 700;
  box-shadow: 0 0 22px rgba(114,231,255,.1);
}
.brand-name { font-weight: 700; font-size: 15px; display: flex; align-items: center; gap: 8px; letter-spacing: -.01em; color: var(--text-0); }
.brand-sub { font-size: 11px; color: var(--text-3); letter-spacing: .04em; text-transform: uppercase; }
.badge {
  font-size: 10px; padding: 2px 8px; border-radius: 999px;
  border: 1px solid var(--border-bright); color: var(--accent-1);
  text-transform: uppercase; letter-spacing: .05em;
  animation: badgePulse 3s ease-in-out infinite;
}
@keyframes badgePulse {
  0%, 100% { opacity: 1; } 50% { opacity: .5; }
}
.topbar-center { display: flex; gap: 2px; background: var(--bg-3); padding: 3px; border-radius: 12px; border: 1px solid var(--border); }
.tab {
  background: transparent; border: none; color: var(--text-3);
  padding: 7px 16px; border-radius: 9px; font-size: 12px; cursor: pointer;
  font-family: inherit; letter-spacing: .01em;
  transition: background .15s var(--ease), color .15s var(--ease);
}
.tab:hover:not(.active) { color: var(--text-1); }
.tab.active { background: var(--accent-1); color: var(--on-accent); font-weight: 700; }
.tab.disabled { cursor: default; }
.topbar-right { display: flex; gap: 8px; align-items: center; }

.btn {
  border: 1px solid var(--border);
  background: rgba(255,255,255,.025);
  color: var(--text-1);
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 12px;
  font-family: inherit;
  letter-spacing: .01em;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  transition: background .15s var(--ease), border-color .15s var(--ease), transform .1s var(--ease), color .15s var(--ease), box-shadow .15s var(--ease);
}
.btn:hover { background: var(--bg-2); border-color: var(--border-bright); color: var(--text-0); }
.btn:active { transform: scale(.96); }
.btn.ghost { background: transparent; }
.btn.small { padding: 6px 10px; font-size: 11px; border-radius: 8px; }
.btn.icon { width: 34px; height: 34px; padding: 0; justify-content: center; border-radius: 10px; }
.btn.primary { background: rgba(114,231,255,.1); border: 1px solid var(--border-bright); color: var(--text-0); font-weight: 600; }
.btn.primary:hover { background: rgba(114,231,255,.18); box-shadow: var(--shadow-glow); transform: translateY(-1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }

.user-chip { display: flex; align-items: center; gap: 7px; padding: 4px 11px 4px 4px; border-radius: 999px; background: rgba(255,255,255,.025); border: 1px solid var(--border); }
.user-chip .user-avatar {
  width: 23px; height: 23px; border-radius: 50%; background: linear-gradient(145deg, var(--accent-1), var(--accent-2)); color: var(--on-accent);
  display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 700;
}
.user-chip .user-name { font-size: 12px; color: var(--text-2); max-width: 110px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- Workspace grid ---------- */
.workspace {
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: 320px 1fr 300px;
  min-height: 0;
  position: relative; z-index: 1;
}

.panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.chat-panel { background: var(--bg-1); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); border-right: 1px solid var(--border); z-index: 2; }
.right-panel { background: var(--bg-1); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); border-left: 1px solid var(--border); z-index: 2; }
.viewport-panel { background: var(--bg-0); }

.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 14px;
  font-size: 10.5px; font-weight: 700; letter-spacing: .11em; color: var(--text-3);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-soft);
  flex: 0 0 auto;
}
.icon-btn {
  background: transparent; border: 1px solid var(--border); color: var(--text-2);
  width: 28px; height: 28px; border-radius: 9px; cursor: pointer; font-size: 12px;
  font-family: inherit;
  transition: color .15s var(--ease), border-color .15s var(--ease), background .15s var(--ease), transform .1s var(--ease);
}
.icon-btn:hover { color: var(--text-0); border-color: var(--border-bright); background: var(--bg-2); }
.icon-btn:active { transform: scale(.92); }
.icon-btn.active { background: var(--accent-1); color: var(--on-accent); border-color: var(--accent-1); font-weight: 700; box-shadow: 0 0 16px rgba(114,231,255,.28); }
.icon-btn.wide { width: auto; padding: 0 11px; font-size: 10.5px; font-weight: 600; letter-spacing: .02em; }

/* ---------- Chat ---------- */
.chat-log { flex: 1 1 auto; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 14px; scroll-behavior: smooth; }
.msg { max-width: 100%; animation: msgIn .28s var(--ease) both; }
@keyframes msgIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.msg-row { display: flex; gap: 8px; }
.msg.user .msg-row { justify-content: flex-end; }
.bubble {
  padding: 10px 13px; border-radius: 13px; font-size: 12.5px; line-height: 1.6;
  max-width: 240px; border: 1px solid var(--border);
}
.msg.user .bubble { background: rgba(114,231,255,.08); color: var(--text-0); border-color: var(--border-bright); border-bottom-right-radius: 4px; }
.msg.assistant .bubble { background: var(--bg-3); color: var(--text-1); border: 1px solid var(--border-soft); border-bottom-left-radius: 4px; }
.msg-time { font-size: 10px; color: var(--text-4); margin-top: 4px; }
.msg.user .msg-time { text-align: right; }
.msg-meta { font-size: 10.5px; color: var(--text-4); margin-top: 6px; }
.msg-error .bubble { border-color: var(--danger); color: var(--danger); }
.avatar {
  width: 26px; height: 26px; border-radius: 9px; flex: 0 0 auto;
  background: rgba(114,231,255,.06); border: 1px solid var(--border-bright); display: flex; align-items: center; justify-content: center;
  font-size: 11px; color: var(--accent-1);
}

.typing-dots { display: inline-flex; gap: 3px; align-items: center; padding: 3px 0; }
.typing-dots span {
  width: 5px; height: 5px; border-radius: 50%; background: var(--text-3);
  animation: typingBounce 1.1s ease-in-out infinite;
}
.typing-dots span:nth-child(2) { animation-delay: .15s; }
.typing-dots span:nth-child(3) { animation-delay: .3s; }
@keyframes typingBounce { 0%, 60%, 100% { transform: translateY(0); opacity: .5; } 30% { transform: translateY(-3px); opacity: 1; } }

.try-prompts { padding: 10px 14px; border-top: 1px solid var(--border-soft); flex: 0 0 auto; }
.try-prompts-label { font-size: 9.5px; color: var(--text-4); letter-spacing: .1em; margin-bottom: 8px; text-transform: uppercase; }
.try-prompts-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  background: rgba(255,255,255,.025); border: 1px solid var(--border); color: var(--text-2);
  padding: 6px 11px; border-radius: 999px; font-size: 11px; font-family: inherit; cursor: pointer;
  transition: border-color .15s var(--ease), color .15s var(--ease), transform .1s var(--ease), background .15s var(--ease);
}
.chip:hover { border-color: var(--border-bright); color: var(--text-0); background: var(--bg-2); transform: translateY(-1px); }
.chip:active { transform: translateY(0) scale(.97); }
.chip.surprise { background: rgba(114,231,255,.12); color: var(--text-0); border-color: var(--border-bright); font-weight: 600; }
.chip:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.chat-input-row {
  display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border-soft); flex: 0 0 auto;
}
.chat-input-row input {
  flex: 1; background: rgba(0,0,0,.22); border: 1px solid var(--border); border-radius: 11px;
  color: var(--text-0); padding: 10px 13px; font-size: 12.5px; font-family: inherit; outline: none;
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
.chat-input-row input::placeholder { color: var(--text-4); }
.chat-input-row input:focus { border-color: var(--border-bright); box-shadow: 0 0 0 3px rgba(114,231,255,.06); }
.send-btn {
  width: 38px; border: 1px solid var(--border-bright); border-radius: 11px; background: rgba(114,231,255,.1); color: var(--accent-1); cursor: pointer;
  font-size: 15px; font-family: inherit; font-weight: 700;
  transition: transform .12s var(--ease), background .15s var(--ease);
}
.send-btn:hover:not(:disabled) { background: rgba(114,231,255,.2); }
.send-btn:active:not(:disabled) { transform: scale(.94); }
.send-btn:disabled { opacity: .45; cursor: not-allowed; }

/* ---------- Viewport ---------- */
.viewport-toolbar {
  display: flex; align-items: center; gap: 8px; padding: 9px 12px;
  border-bottom: 1px solid var(--border-soft); flex: 0 0 auto;
}
.select.small { background: rgba(255,255,255,.025); color: var(--text-1); border: 1px solid var(--border); border-radius: 9px; padding: 5px 8px; font-size: 11px; font-family: inherit; cursor: pointer; }
.toolbar-sep { width: 1px; height: 20px; background: var(--border); margin: 0 4px; }
.toolbar-spacer { flex: 1; }
.perf-badge {
  background: rgba(255,255,255,.025); border: 1px solid var(--border); padding: 4px 11px; border-radius: 999px;
  font-size: 11px; color: var(--accent-1); display: inline-flex; align-items: center; gap: 6px;
  font-variant-numeric: tabular-nums;
}
.perf-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--success); box-shadow: 0 0 8px var(--success); }

#canvasWrap { position: relative; flex: 1 1 auto; min-height: 0; background: var(--bg-0); }
#scene3d { width: 100%; height: 100%; display: block; }

.loading-overlay {
  position: absolute; inset: 0; background: rgba(5,7,13,.8); backdrop-filter: blur(4px);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  color: var(--text-2); font-size: 12.5px; z-index: 5;
  opacity: 0; visibility: hidden; transition: opacity .2s var(--ease), visibility .2s var(--ease);
}
.loading-overlay.visible { opacity: 1; visibility: visible; }
.spinner {
  width: 26px; height: 26px; border-radius: 50%;
  border: 2px solid var(--border); border-top-color: var(--accent-1);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; gap: 8px; padding: 20px;
  pointer-events: none; transition: opacity .2s var(--ease);
}
.empty-state.hidden { opacity: 0; pointer-events: none; display: none; }
.empty-icon { font-size: 26px; color: var(--accent-1); animation: floatIcon 3.2s ease-in-out infinite; text-shadow: 0 0 20px rgba(114,231,255,.5); }
@keyframes floatIcon { 0%, 100% { transform: translateY(0); opacity: .7; } 50% { transform: translateY(-8px); opacity: 1; } }
.empty-title { font-size: 17px; font-weight: 700; color: var(--text-0); letter-spacing: -.01em; }
.empty-sub { font-size: 12px; color: var(--text-3); max-width: 340px; line-height: 1.6; }

/* ---------- Add to scene ---------- */
.add-to-scene {
  flex: 0 0 auto; border-top: 1px solid var(--border-soft); background: var(--bg-1);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  padding: 10px 12px; max-height: 190px; display: flex; flex-direction: column;
}
.ats-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.ats-title { font-size: 10.5px; font-weight: 700; letter-spacing: .11em; color: var(--text-3); text-transform: uppercase; }
.ats-search {
  background: rgba(0,0,0,.2); border: 1px solid var(--border); border-radius: 9px;
  color: var(--text-1); padding: 5px 10px; font-size: 11px; font-family: inherit; width: 180px; outline: none;
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
.ats-search::placeholder { color: var(--text-4); }
.ats-search:focus { border-color: var(--border-bright); box-shadow: 0 0 0 3px rgba(114,231,255,.06); }
.ats-search.wide { width: calc(100% - 28px); margin: 0 14px 10px; }
.ats-tabs { display: flex; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }
.ats-tab {
  background: transparent; border: 1px solid transparent; color: var(--text-4);
  padding: 4px 4px; font-size: 11px; font-family: inherit; cursor: pointer; border-bottom: 2px solid transparent;
  transition: color .15s var(--ease), border-color .15s var(--ease);
}
.ats-tab:hover { color: var(--text-2); }
.ats-tab.active { color: var(--accent-1); border-bottom-color: var(--accent-1); }
.ats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(78px, 1fr)); gap: 8px; overflow-y: auto; }
.ats-card {
  background: rgba(255,255,255,.02); border: 1px solid var(--border); border-radius: 11px;
  padding: 8px 6px; text-align: center; cursor: pointer; font-size: 11px; color: var(--text-2);
  transform-style: preserve-3d; will-change: transform; --lift: 0px;
  transform: perspective(500px) translateY(var(--lift)) rotateX(var(--rot-x, 0deg)) rotateY(var(--rot-y, 0deg)) scale(var(--tilt-scale, 1));
  transition: border-color .15s var(--ease), color .15s var(--ease), transform .12s var(--ease), background .15s var(--ease);
}
.ats-card:hover { border-color: var(--border-bright); color: var(--text-0); background: var(--bg-2); --lift: -2px; }
.ats-card:active { --lift: 0px; transform: perspective(500px) scale(.97); }
.ats-card .icon { font-size: 18px; display: block; margin-bottom: 4px; transition: transform .15s var(--ease); }
.ats-card:hover .icon { transform: scale(1.12); }
.ats-card .name { font-weight: 700; color: var(--text-0); display: block; text-transform: lowercase; }
.ats-card .desc { display: block; font-size: 9px; color: var(--text-4); margin-top: 2px; }
.ats-card.just-added { animation: cardAdded .5s var(--ease); }
@keyframes cardAdded { 0% { box-shadow: 0 0 0 0 rgba(114,231,255,.55); } 100% { box-shadow: 0 0 0 8px rgba(114,231,255,0); } }

/* ---------- Right panel: outliner + properties ---------- */
.outliner-list { overflow-y: auto; flex: 0 1 auto; max-height: 34vh; padding: 4px 8px 8px; }
.outliner-item {
  display: flex; align-items: center; gap: 8px; padding: 7px 9px; border-radius: 9px;
  font-size: 12px; color: var(--text-2); cursor: pointer;
  transition: background .12s var(--ease), color .12s var(--ease);
  animation: msgIn .2s var(--ease) both;
}
.outliner-item:hover { background: var(--bg-2); }
.outliner-item.selected { background: var(--bg-2); color: var(--text-0); box-shadow: inset 2px 0 0 var(--accent-1); }
.outliner-item .oi-icon { font-size: 12px; }
.outliner-item .oi-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.outliner-item .oi-remove { opacity: 0; background: none; border: none; color: var(--danger); cursor: pointer; font-size: 11px; font-family: inherit; transition: opacity .12s var(--ease), transform .12s var(--ease); }
.outliner-item:hover .oi-remove { opacity: 1; }
.outliner-item .oi-remove:hover { transform: scale(1.2); }
.outliner-empty { padding: 18px 10px; text-align: center; color: var(--text-4); font-size: 11.5px; }

.props-header { border-top: 1px solid var(--border-soft); }
.properties-body { flex: 1 1 auto; overflow-y: auto; padding: 12px 14px; }
.props-empty { color: var(--text-4); font-size: 12px; }
.prop-group-title { font-size: 10px; color: var(--text-4); letter-spacing: .08em; margin: 12px 0 6px; text-transform: uppercase; }
.prop-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.prop-row label { font-size: 11.5px; color: var(--text-2); text-transform: lowercase; }
.prop-row input[type="number"], .prop-row select {
  background: rgba(0,0,0,.2); border: 1px solid var(--border); color: var(--text-0);
  border-radius: 8px; padding: 4px 6px; font-size: 11.5px; font-family: inherit; width: 110px;
  transition: border-color .15s var(--ease);
}
.prop-row input[type="number"]:focus, .prop-row select:focus { border-color: var(--border-bright); }
.prop-row input[type="range"] {
  width: 110px; accent-color: var(--accent-1); cursor: pointer;
}
.prop-row input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent-1); cursor: pointer; }
.prop-xyz { display: flex; gap: 6px; }
.prop-xyz input { width: 55px; }

/* ---------- Toasts ---------- */
.toast-stack {
  position: fixed; bottom: 46px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 8px; z-index: 100; pointer-events: none;
}
.toast {
  background: rgba(8,12,20,.9); border: 1px solid var(--border-bright); color: var(--text-0);
  padding: 10px 16px; border-radius: 12px; font-size: 12px; font-family: inherit;
  backdrop-filter: blur(14px); box-shadow: var(--shadow-md);
  animation: toastIn .25s var(--ease), toastOut .25s var(--ease) 2.4s forwards;
}
@keyframes toastIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { to { opacity: 0; transform: translateY(-6px); } }

/* ---------- Status bar ---------- */
.statusbar {
  flex: 0 0 auto; display: flex; justify-content: space-between; align-items: center;
  padding: 7px 16px; font-size: 10.5px; color: var(--text-4);
  background: var(--bg-1); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border-top: 1px solid var(--border);
  position: relative; z-index: 1;
}
.statusbar-right { color: var(--text-4); }
#sourceTag { color: var(--accent-1); font-weight: 700; }

/* scrollbars */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-1); }
::-webkit-scrollbar-track { background: transparent; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}