:root {
  --paper: #f7f7fa;
  --paper-dim: #efeff4;
  --surface: #ffffff;
  --ink: #191b24;
  --ink-soft: #4b5060;
  --purple-dp: #3c1478;
  --purple: #5b21b6;
  --purple-lt: #8b5cf6;
  --lilac: #ebe7f7;
  --gold: #c8963f;
  --stone: #b6b3c4;
  --line: rgba(25, 27, 36, 0.13);
  --line-dark: rgba(243, 242, 247, 0.14);
  --danger: #9d2d2d;
  --ok: #2f7555;
  --grad: linear-gradient(135deg, var(--purple-dp), var(--purple) 55%, var(--purple-lt));
}

html[data-theme="dark"] {
  --paper: #191b24;
  --paper-dim: #262a38;
  --surface: #202431;
  --ink: #f3f2f7;
  --ink-soft: #d9d2f0;
  --lilac: #2d2440;
  --stone: #696676;
  --line: rgba(243, 242, 247, 0.14);
  --line-dark: rgba(243, 242, 247, 0.18);
  --danger: #e06565;
  --ok: #6cc79e;
}

* { box-sizing: border-box; }
html { background: var(--paper); color: var(--ink); font-family: Inter, ui-sans-serif, system-ui, sans-serif; }
body { margin: 0; min-height: 100vh; }
body.overlay-body { background: transparent; overflow: hidden; }
button, input, select, textarea { font: inherit; }
a { color: inherit; }

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.025;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.shell { min-height: 100vh; display: grid; grid-template-rows: auto 1fr; }
.topbar {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 5vw;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 84%, transparent);
  backdrop-filter: blur(10px);
}
.brand { display: flex; align-items: center; gap: .55rem; text-decoration: none; min-width: 0; }
.brand-logo-wrap { position: relative; width: 28px; height: 28px; display: block; flex: 0 0 auto; }
.brand-logo { position: absolute; inset: 0; width: 28px; height: 28px; object-fit: contain; display: block; transition: opacity .22s ease; }
.brand-logo-light { opacity: 1; }
.brand-logo-dark { opacity: 0; }
html[data-theme="dark"] .brand-logo-light { opacity: 0; }
html[data-theme="dark"] .brand-logo-dark { opacity: 1; }
.brand-lockup { display: flex; align-items: baseline; gap: .55rem; min-width: 0; }
.brand-main { font-family: "Space Grotesk", Inter, sans-serif; font-weight: 700; font-size: 1.05rem; }
.brand-main span { background: var(--grad); color: transparent; -webkit-background-clip: text; background-clip: text; }
.brand-sub, .mono-label {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  opacity: .68;
}
.nav { display: flex; align-items: center; gap: .85rem; flex-wrap: wrap; justify-content: flex-end; }
.nav a, .link-button {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}
.nav a:hover, .link-button:hover { color: var(--purple); }
.theme-toggle { border-color: var(--line); background: transparent; color: var(--ink); min-width: 82px; }

.page { padding: 4vw 5vw; }
.narrow { max-width: 460px; margin: 7vh auto 0; }
.workspace { max-width: 1180px; margin: 0 auto; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 1rem; margin-bottom: 1.5rem; }
h1, h2, h3 { font-family: "Space Grotesk", Inter, sans-serif; margin: 0; line-height: 1.12; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); letter-spacing: 0; }
h2 { font-size: clamp(1.4rem, 3vw, 2.1rem); }
h3 { font-size: 1.05rem; }
p { color: var(--ink-soft); line-height: 1.55; }

.panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.panel, .form-panel {
  background: var(--surface);
  padding: 1.25rem;
  border-radius: 8px;
}
.form-panel { border: 1px solid var(--line); }
.login-panel { display: grid; gap: .9rem; }
.login-panel h1, .login-panel p { margin: 0; }
.overlay-list { display: grid; gap: .8rem; }
.dark-band {
  background: var(--ink);
  color: var(--paper);
  padding: 2rem;
  border: 1px solid var(--line-dark);
}
.dark-band p, .dark-band .mono-label { color: var(--paper); }

.field { display: grid; gap: .45rem; margin-bottom: 1rem; }
label { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
  padding: .78rem .82rem;
  outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--purple); box-shadow: 0 0 0 2px rgba(91, 33, 182, .12); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  min-height: 40px;
  padding: .7rem .95rem;
  border: 1px solid var(--ink);
  border-radius: 6px;
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  text-decoration: none;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.btn:hover { transform: translateY(-1px); }
.btn.secondary { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.danger { background: var(--danger); border-color: var(--danger); }
.btn.icon { width: 38px; padding: 0; }
.status { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .72rem; color: var(--ink-soft); opacity: .72; }
.error { color: var(--danger); }
.ok { color: var(--ok); }

.overlay-card { min-height: 0; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.overlay-card .meta { margin: .35rem 0 0; font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .72rem; color: var(--ink-soft); }
.overlay-card .actions { display: flex; flex-wrap: wrap; gap: .55rem; justify-content: flex-end; }

.table { width: 100%; border-collapse: collapse; border: 1px solid var(--line); background: var(--paper); }
.table th, .table td { padding: .85rem; border-bottom: 1px solid var(--line); text-align: left; }
.table th { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); }

.editor-shell { height: 100vh; display: grid; grid-template-rows: 64px minmax(0, 1fr) auto; background: var(--paper); color: var(--ink); }
.editor-top {
  display: grid;
  grid-template-columns: minmax(180px, 260px) 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0 1.25rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.top-actions { justify-content: flex-end; align-items: center; }
.editor-main { min-height: 0; display: grid; grid-template-columns: 260px minmax(420px, 1fr) 340px; border-bottom: 1px solid var(--line); }
.side, .props { min-height: 0; overflow: auto; padding: 1rem; background: var(--surface); }
.side { border-right: 1px solid var(--line); }
.props { border-left: 1px solid var(--line); }
.tool-list { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; margin-top: 1rem; }
.tool { justify-content: center; border-color: var(--line); background: var(--surface); color: var(--ink); }
.tool:hover { background: var(--paper-dim); transform: none; }
.panel-block { border: 1px solid var(--line); border-radius: 8px; margin-top: 1rem; background: var(--surface); overflow: hidden; }
.panel-block-head { display: flex; align-items: center; justify-content: space-between; gap: .8rem; padding: .72rem .8rem; border-bottom: 1px solid var(--line); }
.panel-block-body { padding: .85rem; }
.hint { font-size: .78rem; line-height: 1.5; color: var(--ink-soft); opacity: .72; margin: .65rem 0 0; }
.canvas-wrap {
  min-width: 0;
  min-height: 0;
  display: grid;
  place-items: center;
  overflow: auto;
  background:
    repeating-linear-gradient(0deg, color-mix(in srgb, var(--ink) 5%, transparent) 0 1px, transparent 1px 84px),
    repeating-linear-gradient(90deg, color-mix(in srgb, var(--ink) 5%, transparent) 0 1px, transparent 1px 132px),
    var(--paper-dim);
  padding: 2rem;
}
.canvas {
  position: relative;
  width: min(100%, 960px);
  height: auto;
  aspect-ratio: 16 / 9;
  background-color: transparent;
  background-image:
    linear-gradient(45deg, color-mix(in srgb, var(--ink) 7%, transparent) 25%, transparent 25%),
    linear-gradient(-45deg, color-mix(in srgb, var(--ink) 7%, transparent) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, color-mix(in srgb, var(--ink) 7%, transparent) 75%),
    linear-gradient(-45deg, transparent 75%, color-mix(in srgb, var(--ink) 7%, transparent) 75%);
  background-size: 24px 24px;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 50px rgba(25,27,36,.14);
  transform-origin: center;
}
.element {
  position: absolute;
  min-width: 12px;
  min-height: 12px;
  user-select: none;
  transform-origin: center;
}
.element.selected { outline: 1px solid var(--purple); }
.element.locked { outline-style: dashed; }
.resize-handle {
  position: absolute;
  right: -5px;
  bottom: -5px;
  width: 10px;
  height: 10px;
  border: 1px solid var(--paper);
  background: var(--purple);
  cursor: nwse-resize;
}
.layer-panel { margin-bottom: 1rem; }
.settings-label { display: block; margin-top: 1.1rem; }
.layer-row { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: .65rem; margin: 0 0 .45rem; padding: .7rem .75rem; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--ink); cursor: pointer; text-align: left; }
.layer-row.active { border-color: var(--purple); box-shadow: 0 0 0 2px rgba(91, 33, 182, .12); }

.prop-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.button-row { display: flex; flex-wrap: wrap; gap: .5rem; }
.props-title { display: flex; align-items: center; justify-content: space-between; gap: .75rem; margin-bottom: .8rem; }
.prop-section { border: 1px solid var(--line); border-radius: 8px; margin-bottom: .85rem; overflow: hidden; background: var(--surface); }
.prop-section > .mono-label { display: block; padding: .7rem .8rem; border-bottom: 1px solid var(--line); background: var(--paper-dim); }
.prop-section-body { padding: .8rem; }
.compact-actions .btn { min-height: 32px; padding: .55rem .7rem; font-size: .66rem; }
.content-panel {
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding: .85rem 1rem 1rem;
}
.content-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .75rem;
}
.content-panel-body {
  display: grid;
  gap: .75rem;
}
.content-panel-body > .field {
  margin-bottom: 0;
}
.content-panel-body > .prop-grid,
.content-panel-body .prop-grid {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}
.content-panel textarea {
  min-height: 76px;
  resize: vertical;
}

.overlay-root {
  position: fixed;
  inset: 0;
  overflow: hidden;
  background: transparent;
}
.obs-stage {
  position: absolute;
  left: 0;
  top: 0;
  transform-origin: top left;
  background: transparent;
}
.chat-message { padding: .35em .55em; margin-bottom: .35em; overflow-wrap: anywhere; }
.chat-badges { display: inline-flex; align-items: center; gap: .22em; margin-right: .35em; vertical-align: middle; }
.chat-badge { width: 1em; height: 1em; object-fit: contain; display: inline-block; vertical-align: -0.12em; }
.chat-badge-fallback {
  display: inline-flex;
  align-items: center;
  height: 1.35em;
  padding: 0 .28em;
  border-radius: 2px;
  background: rgba(139, 92, 246, .72);
  color: #fff;
  font-size: .62em;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  text-transform: uppercase;
}
.chat-user { font-weight: 700; margin-right: .35em; }

@media (max-width: 860px) {
  .topbar, .editor-top { padding: 0 1rem; }
  .nav a:not(.keep), .brand-sub { display: none; }
  .editor-shell { height: auto; min-height: 100vh; grid-template-rows: auto auto auto; }
  .editor-top, .editor-main { grid-template-columns: 1fr; }
  .editor-top { padding-block: .8rem; }
  .side, .props { border: 0; border-bottom: 1px solid var(--line); }
  .canvas-wrap { min-height: 52vh; padding: 1rem; }
  .content-panel { position: static; }
  .overlay-card { align-items: flex-start; flex-direction: column; }
  .overlay-card .actions { justify-content: flex-start; }
}