:root {
  --bg: #0b0b10;
  --panel: rgba(20, 22, 32, 0.72);
  --panel-border: rgba(255, 255, 255, 0.06);
  --fg: #e8e8ee;
  --muted: #8a8a98;
  --accent: #ff3b30;
  --accent-soft: rgba(255, 59, 48, 0.15);
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
  background: radial-gradient(circle at 30% 20%, #1a0d12 0%, #07070c 60%);
  color: var(--fg);
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

/* ---------- Login ---------- */
body.login { display: grid; place-items: center; }
.login-card {
  background: var(--panel);
  backdrop-filter: blur(20px);
  border: 1px solid var(--panel-border);
  padding: 32px 28px;
  border-radius: 18px;
  width: min(360px, calc(100vw - 32px));
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.login-card h1 { margin: 0; font-size: 28px; letter-spacing: 0.5px; }
.login-card .muted { margin: 4px 0 24px; color: var(--muted); }
.login-card form { display: grid; gap: 14px; }
.login-card label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.login-card input {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--panel-border);
  color: var(--fg);
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 15px;
}
.login-card input:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
.login-card .error { color: var(--accent); font-size: 13px; margin: 0; }

button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  font-size: 14px;
}
button:hover { filter: brightness(1.1); }
nav button, .controls-inline button, .action-bar button:not(.primary) {
  background: rgba(255,255,255,0.06);
  color: var(--fg);
  font-weight: 500;
}
nav button:hover, .controls-inline button:hover { background: rgba(255,255,255,0.12); }

/* ---------- Topbar ---------- */
body.control { display: grid; grid-template-rows: 52px 1fr auto; min-height: 100dvh; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--panel-border);
  background: rgba(0,0,0,0.45);
  backdrop-filter: blur(20px);
  z-index: 10;
}
.topbar h1 { margin: 0; font-size: 16px; letter-spacing: 1px; }
.topbar nav { display: flex; gap: 6px; align-items: center; flex-wrap: nowrap; }
.topbar .user { color: var(--muted); font-size: 12px; margin-right: 4px; }

/* ---------- Stage layout ---------- */
.stage {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 10px;
  padding: 10px;
  min-height: 0;
  overflow: hidden;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  backdrop-filter: blur(20px);
  display: flex; flex-direction: column;
  overflow: hidden;
  min-height: 0;
}
.panel > header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--panel-border);
}
.panel > header h2 { margin: 0; font-size: 12px; color: var(--muted); font-weight: 600; letter-spacing: 1px; text-transform: uppercase; }

/* Avatar panel — main canvas + overlay camera thumb */
.avatar {
  position: relative;
  background: linear-gradient(180deg, #0d0710 0%, #050308 100%);
}
.avatar #live2d-canvas {
  width: 100%; height: 100%;
  display: block;
}
.avatar-overlay {
  position: absolute; inset: 0;
  pointer-events: none;
  padding: 12px;
}
.camera-thumb {
  position: absolute;
  top: 12px; right: 12px;
  width: 160px; height: 120px;
  border-radius: 10px;
  overflow: hidden;
  background: #000;
  border: 1px solid var(--panel-border);
  box-shadow: 0 6px 20px rgba(0,0,0,0.5);
  pointer-events: auto;
}
.camera-thumb #input-video,
.camera-thumb #output-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
}
.camera-thumb #output-canvas { pointer-events: none; }

/* Controls panel (sidebar on desktop, sheet on mobile) */
.controls > header { padding: 12px 14px; }
.controls .sheet-handle { display: none; background: transparent; padding: 4px 8px; color: var(--muted); }
.controls-body { padding: 14px; gap: 10px; overflow-y: auto; flex: 1; }
.controls hr { border: none; border-top: 1px solid var(--panel-border); margin: 12px 0; }
.toggle { display: flex; align-items: center; gap: 10px; font-size: 14px; cursor: pointer; padding: 8px 0; }
.toggle input { accent-color: var(--accent); width: 18px; height: 18px; }
.slider { display: grid; gap: 4px; margin: 6px 0; }
.slider span { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); }
.slider em { color: var(--fg); font-style: normal; font-variant-numeric: tabular-nums; }
.slider input[type=range] { accent-color: var(--accent); width: 100%; }
.status {
  margin-top: 12px;
  padding: 8px 10px;
  background: rgba(0,0,0,0.4);
  border-radius: 8px;
  font-family: ui-monospace, monospace;
  font-size: 11px;
  color: var(--muted);
}
.reset-btn {
  width: 100%;
  margin-top: 8px;
  background: rgba(255,255,255,0.06);
  color: var(--fg);
  font-weight: 500;
  font-size: 13px;
}
.reset-btn:hover { background: rgba(255,255,255,0.12); }

/* ---------- Action bar (bottom toolbar) ---------- */
.action-bar {
  display: flex; gap: 8px;
  padding: 10px;
  border-top: 1px solid var(--panel-border);
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(20px);
  z-index: 5;
}
.action-bar button { flex: 1; padding: 12px 14px; font-size: 14px; }
.action-bar .primary { flex: 2; }
.tracking-fab { display: none; }

/* ---------- Dialogs ---------- */
dialog {
  background: var(--panel);
  color: var(--fg);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 20px 22px;
  width: min(420px, calc(100vw - 32px));
  backdrop-filter: blur(30px);
}
dialog::backdrop { background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); }
dialog h3 { margin: 0 0 10px; }
dialog .muted { color: var(--muted); font-size: 13px; }
dialog ul { list-style: none; padding: 0; margin: 12px 0; max-height: 280px; overflow-y: auto; }
dialog li {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  background: rgba(255,255,255,0.04);
  margin-bottom: 6px;
  font-size: 13px;
}
dialog li .grow { flex: 1; }
dialog li code { font-family: ui-monospace, monospace; font-size: 11px; color: var(--muted); word-break: break-all; }
dialog form { display: flex; gap: 8px; align-items: center; margin-top: 12px; }
dialog input[type=text], dialog input[type=password] {
  flex: 1;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--panel-border);
  color: var(--fg);
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 14px;
}
dialog [data-close] { margin-top: 8px; background: rgba(255,255,255,0.08); color: var(--fg); }
dialog button.danger { background: rgba(220, 60, 60, 0.18); color: #ffb4b4; }
dialog button.danger:hover { background: rgba(220, 60, 60, 0.32); }
dialog .badge-default {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 6px;
  border-radius: 6px;
  background: rgba(80, 160, 255, 0.18);
  color: #9dc7ff;
  font-style: normal;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
dialog .dlg-msg {
  min-height: 18px;
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}
dialog .dlg-msg[data-kind="ok"] { color: #8be39a; }
dialog .dlg-msg[data-kind="error"] { color: #ff9a9a; }

/* ---------- Rigging Studio ---------- */
body.rig { display: grid; grid-template-rows: 52px 1fr; min-height: 100dvh; overflow: auto; }
.link-btn {
  display: inline-block;
  background: rgba(255,255,255,0.06);
  color: var(--fg);
  text-decoration: none;
  padding: 7px 12px;
  border-radius: 10px;
  font-weight: 500;
  font-size: 13px;
}
.link-btn:hover { background: rgba(255,255,255,0.12); }

.rig-stage {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  grid-template-rows: 1fr;
  grid-template-areas: "cam avatar";
  gap: 10px;
  padding: 10px;
  min-height: 0;
}
.cam-panel { grid-area: cam; }
.avatar-panel { grid-area: avatar; background: linear-gradient(180deg, #0d0710 0%, #050308 100%); }
/* Mappings panel never shows on the main window — only when this page is
   loaded with ?popout=mappings (body.popout). See popout rules below. */
.mappings-panel { display: none; }

.cam-panel .cam-wrap {
  position: relative;
  flex: 1;
  background: #000;
  overflow: hidden;
}
.cam-panel video, .cam-panel canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: contain;
  background: #000;
}
.cam-panel canvas { pointer-events: none; }
/* Mirror toggles transform on both layers in sync from rig.js */
.cam-panel video, .cam-panel canvas { transform-origin: center center; }
.avatar-panel #live2d-canvas { width: 100%; height: 100%; display: block; }

/* Click-to-add-mapping affordance — only on the main view, not in popout
   (popout has the panel hidden anyway, but be explicit). */
body:not(.popout) .avatar-panel #live2d-canvas { cursor: crosshair; }

/* Subtle inline hint, e.g. "Click avatar to add mapping" in the panel header. */
.hint { font-size: 11px; color: var(--muted); margin-left: 8px; }

.overlay-toggles {
  display: flex; align-items: center; gap: 10px;
  font-size: 12px; color: var(--muted);
}
.overlay-toggles label { display: flex; align-items: center; gap: 4px; cursor: pointer; }
.overlay-toggles input[type=checkbox] { accent-color: var(--accent); }
.overlay-toggles input[type=range] { width: 100px; accent-color: var(--accent); }
.overlay-toggles em { color: var(--fg); font-style: normal; font-variant-numeric: tabular-nums; }
.overlay-toggles button { padding: 5px 10px; font-size: 11px; }
.overlay-toggles .small { font-size: 11px; }
.overlay-toggles label.micro { font-size: 10px; gap: 4px; }
.overlay-toggles label.micro input[type=range] { width: 80px; }

.mappings-body { padding: 6px 12px 12px; overflow-y: auto; }
.mapping-group {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 10px 0 4px;
  font-weight: 600;
}
.mapping-row {
  display: grid;
  grid-template-columns: 30px 1fr 140px 200px auto 28px;
  gap: 12px;
  align-items: center;
  padding: 7px 4px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: 13px;
}
.row-extras { display: flex; gap: 8px; align-items: center; }
.row-extras .mini { display: flex; align-items: center; gap: 4px; font-size: 10px; color: var(--muted); }
.row-extras .mini input[type=number] {
  width: 50px;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--panel-border);
  color: var(--fg);
  padding: 3px 5px;
  border-radius: 4px;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}
.mapping-row .row-del {
  background: transparent;
  color: var(--muted);
  font-size: 18px;
  padding: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
}
.mapping-row .row-del:hover { background: rgba(255,59,48,0.2); color: var(--accent); }
.mapping-row .enable input { width: 16px; height: 16px; accent-color: var(--accent); }
.mapping-row .src-tgt { display: flex; gap: 6px; align-items: center; font-family: ui-monospace, monospace; font-size: 11px; }
.mapping-row .src { color: var(--muted); }
.mapping-row .tgt { color: var(--fg); }
.mapping-row .arrow { color: var(--muted); }
.mapping-row .value-bar {
  position: relative;
  background: rgba(255,255,255,0.06);
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
}
.mapping-row .value-bar em {
  position: absolute; right: -42px; top: -5px;
  font-size: 10px; color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-style: normal;
}
.mapping-row .value-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #ff7a30);
  width: 50%;
  transition: width 0.05s linear;
}
.mapping-row .intensity { display: flex; gap: 8px; align-items: center; }
.mapping-row .intensity input { flex: 1; accent-color: var(--accent); }
.mapping-row .intensity em { font-size: 11px; color: var(--muted); font-style: normal; font-variant-numeric: tabular-nums; min-width: 32px; }
.mapping-row .invert { font-size: 11px; color: var(--muted); display: flex; align-items: center; gap: 4px; }
.mapping-row .invert input { accent-color: var(--accent); }

@media (max-width: 900px) {
  .rig-stage {
    grid-template-columns: 1fr;
    grid-template-areas: "cam" "avatar";
    grid-template-rows: minmax(220px, 50vh) minmax(220px, 50vh);
  }
  .mapping-row {
    grid-template-columns: 24px 1fr 32px;
    grid-template-areas:
      "en src del"
      "en val val"
      "en int int"
      "en xtr xtr";
    gap: 4px 8px;
    padding: 8px 4px;
  }
  .mapping-row .enable { grid-area: en; }
  .mapping-row .src-tgt { grid-area: src; }
  .mapping-row .value-bar { grid-area: val; height: 6px; }
  .mapping-row .intensity { grid-area: int; }
  .mapping-row .row-extras { grid-area: xtr; flex-wrap: wrap; }
  .mapping-row .row-del { grid-area: del; }
}

/* ---- Add Mapping dialog form ---- */
#dlg-add-mapping form { display: grid; gap: 10px; margin-top: 12px; }
#dlg-add-mapping label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
#dlg-add-mapping label.row { display: flex; align-items: center; gap: 8px; }
#dlg-add-mapping select, #dlg-add-mapping input[type=number] {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--panel-border);
  color: var(--fg);
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 14px;
}
.dlg-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 8px; }
.dlg-actions .primary { background: var(--accent); }

/* ---- Popout: only the mappings panel is visible ---- */
body.popout .topbar { display: none; }
body.popout .cam-panel, body.popout .avatar-panel { display: none; }
body.popout .rig-stage {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  grid-template-areas: "mappings";
  height: 100vh;
  padding: 0;
}
body.popout .mappings-panel {
  display: flex;
  max-height: none;
  height: 100vh;
  border-radius: 0;
}

/* ---------- Stream view (OBS) ---------- */
body.stream { background: transparent !important; margin: 0; overflow: hidden; }
body.stream #live2d-canvas {
  position: fixed; inset: 0;
  width: 100vw; height: 100vh;
  display: block;
}

/* ---------- Sheet backdrop (mobile) ---------- */
.sheet-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 20;
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s ease;
}

/* ===================================================================
   MOBILE — under 900px: collapse sidebar into bottom sheet
   =================================================================== */
@media (max-width: 900px) {
  body.control { grid-template-rows: 48px 1fr auto; }
  .topbar { padding: 0 10px; }
  .topbar h1 { font-size: 14px; }
  .topbar nav { gap: 4px; }
  .topbar nav button { padding: 6px 10px; font-size: 12px; }
  .topbar .user { display: none; }

  .stage {
    grid-template-columns: 1fr;
    padding: 8px;
    gap: 8px;
  }

  /* Camera thumb shrinks on small screens */
  .camera-thumb { width: 110px; height: 82px; top: 8px; right: 8px; }

  /* Action bar buttons reorganize */
  .action-bar { padding: 8px; gap: 6px; padding-bottom: max(8px, env(safe-area-inset-bottom)); }
  .tracking-fab { display: block; flex: 1; }

  /* Sidebar becomes a bottom sheet, hidden by default, slides up when open */
  .controls {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    max-height: 70vh;
    border-radius: 18px 18px 0 0;
    border-bottom: none;
    transform: translateY(100%);
    transition: transform 0.28s cubic-bezier(0.32, 0.72, 0, 1);
    z-index: 25;
    box-shadow: 0 -10px 40px rgba(0,0,0,0.5);
  }
  .controls.open { transform: translateY(0); }
  .controls > header { padding: 14px 16px 10px; position: relative; }
  .controls > header::before {
    content: "";
    position: absolute;
    top: 6px; left: 50%;
    transform: translateX(-50%);
    width: 40px; height: 4px;
    background: rgba(255,255,255,0.2);
    border-radius: 2px;
  }
  .controls .sheet-handle { display: inline-block; }
  .controls-body { padding: 4px 18px 24px; }
  .controls-body .toggle { padding: 12px 0; font-size: 16px; }
  .controls-body .slider span { font-size: 13px; }

  .sheet-backdrop.open { opacity: 1; pointer-events: auto; }
}

/* ===================================================================
   Very small phones — under 420px
   =================================================================== */
@media (max-width: 420px) {
  .topbar nav button:not([type=submit]) { padding: 6px 8px; font-size: 11px; }
}