@import url("https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&display=swap");

:root {
  color-scheme: dark;
  --bg: #071015;
  --bg-deep: #050b0f;
  --surface: #0d171d;
  --surface-raised: #111d24;
  --surface-soft: #15232b;
  --border: rgba(181, 218, 226, 0.13);
  --border-strong: rgba(181, 218, 226, 0.24);
  --text: #f1f7f8;
  --muted: #91a4ac;
  --muted-strong: #b5c3c8;
  --accent: #3ed2e4;
  --accent-strong: #1bb8cc;
  --accent-soft: rgba(62, 210, 228, 0.13);
  --success: #53df9b;
  --danger: #ff7e7e;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --topbar-h: 72px;
  --sidebar-w: 108px;
  font-family: "DM Sans", Inter, ui-sans-serif, system-ui, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #edf3f4;
  --bg-deep: #f8fbfb;
  --surface: #ffffff;
  --surface-raised: #f5f9fa;
  --surface-soft: #e8f1f2;
  --border: rgba(16, 52, 61, 0.12);
  --border-strong: rgba(16, 52, 61, 0.22);
  --text: #102229;
  --muted: #637980;
  --muted-strong: #455e66;
  --accent: #0aa8bd;
  --accent-strong: #008ba0;
  --accent-soft: rgba(10, 168, 189, 0.12);
  --success: #138657;
  --danger: #c84b55;
  --shadow: 0 22px 60px rgba(24, 61, 71, 0.14);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  min-width: 320px;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
}

button,
input {
  font: inherit;
}

button,
label {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
}

button:focus-visible,
label:has(input:focus-visible),
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  transform: translateY(-140%);
  border-radius: 8px;
  background: var(--text);
  color: var(--bg);
}

.skip-link:focus {
  transform: none;
}

.app-shell {
  display: grid;
  grid-template:
    "topbar topbar" var(--topbar-h)
    "sidebar main" calc(100vh - var(--topbar-h))
    / var(--sidebar-w) 1fr;
}

.topbar {
  grid-area: topbar;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-deep) 94%, transparent);
  padding: 0 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  gap: 12px;
  border: 0;
  background: transparent;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.04em;
  cursor: pointer;
}

.brand > span:last-child span {
  color: var(--accent);
}

.brand-mark {
  position: relative;
  display: grid;
  grid-template: 1fr 1fr / 1fr 1fr;
  width: 34px;
  height: 34px;
  gap: 8px;
}

.brand-mark i {
  border-color: var(--accent);
  border-style: solid;
}

.brand-mark i:nth-child(1) { border-width: 2px 0 0 2px; border-radius: 4px 0 0; }
.brand-mark i:nth-child(2) { border-width: 2px 2px 0 0; border-radius: 0 4px 0 0; }
.brand-mark i:nth-child(3) { border-width: 0 0 2px 2px; border-radius: 0 0 0 4px; }
.brand-mark i:nth-child(4) { border-width: 0 2px 2px 0; border-radius: 0 0 4px; }

.topbar-status {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #5e6c72;
  box-shadow: 0 0 0 5px rgba(94, 108, 114, 0.1);
}

.topbar-status.is-ready {
  color: var(--success);
}

.topbar-status.is-ready .status-dot {
  background: var(--success);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--success) 12%, transparent);
}

.topbar-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 6px;
}

.icon-button,
.icon-label-button,
.tool-button,
.nav-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.icon-button {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  color: var(--muted-strong);
}

.icon-button:hover,
.tool-button:hover {
  background: var(--surface-soft);
  color: var(--text);
}

.icon-label-button {
  gap: 8px;
  min-height: 42px;
  padding: 0 12px;
  border-radius: 10px;
  color: var(--muted-strong);
  font-size: 14px;
  font-weight: 600;
}

.icon-label-button:hover {
  background: var(--surface-soft);
  color: var(--text);
}

.sidebar {
  grid-area: sidebar;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  border-right: 1px solid var(--border);
  background: var(--bg-deep);
  padding: 14px 0;
}

.nav-item {
  position: relative;
  flex-direction: column;
  gap: 8px;
  min-height: 92px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.nav-item::before {
  position: absolute;
  inset: 10px auto 10px 0;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--accent);
  content: "";
  opacity: 0;
}

.nav-item:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}

.nav-item.is-active {
  color: var(--accent);
  background: linear-gradient(90deg, var(--accent-soft), transparent);
}

.nav-item.is-active::before {
  opacity: 1;
}

.nav-item svg {
  width: 26px;
  height: 26px;
}

.sidebar-spacer {
  flex: 1;
}

.nav-item-small {
  min-height: 72px;
}

main {
  grid-area: main;
  min-width: 0;
  overflow: hidden;
}

.view {
  width: 100%;
  height: 100%;
}

.trace-view {
  display: grid;
  grid-template-columns: minmax(220px, 270px) minmax(420px, 1fr) minmax(260px, 315px);
  background:
    radial-gradient(circle at 48% -10%, rgba(53, 146, 160, 0.08), transparent 30%),
    var(--bg);
}

.source-panel,
.inspector {
  min-height: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--surface-soft) transparent;
}

.source-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--border);
  padding: 28px;
}

.source-copy h2 {
  max-width: 250px;
  margin: 5px 0 10px;
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.source-copy > p:last-child,
.view-header > div > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.panel-kicker {
  margin: 0;
  color: var(--accent);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.upload-dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 166px;
  margin-top: 30px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--surface-raised), color-mix(in srgb, var(--surface) 65%, transparent));
  cursor: pointer;
  transition: border-color 160ms ease, transform 160ms ease, background 160ms ease;
}

.upload-dropzone:hover,
.upload-dropzone.is-dragging {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.upload-dropzone input,
.file-button input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.upload-dropzone svg {
  width: 35px;
  height: 35px;
  margin-bottom: 5px;
  color: var(--muted-strong);
}

.upload-dropzone strong {
  color: var(--accent);
  font-size: 14px;
}

.upload-dropzone span {
  color: var(--muted);
  font-size: 11px;
}

.or-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 18px 0;
  color: var(--muted);
  font-size: 11px;
}

.or-divider::before,
.or-divider::after {
  height: 1px;
  flex: 1;
  background: var(--border);
  content: "";
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 46px;
  border-radius: 10px;
  padding: 0 18px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.primary-button {
  border: 1px solid transparent;
  background: var(--accent);
  color: #041418;
  box-shadow: 0 9px 26px rgba(32, 191, 210, 0.16);
}

.primary-button:hover {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--accent) 88%, white);
}

.secondary-button {
  border: 1px solid var(--border-strong);
  background: var(--surface-raised);
  color: var(--text);
}

.secondary-button:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.privacy-note {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 7px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 10px;
}

.privacy-note svg {
  width: 15px;
  height: 15px;
}

.stage-column {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  padding: 22px;
}

.camera-stage {
  position: relative;
  width: 100%;
  height: min(68vh, calc(100% - 84px));
  min-height: 360px;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background:
    radial-gradient(circle at 35% 25%, rgba(81, 132, 139, 0.2), transparent 26%),
    linear-gradient(135deg, #15252c, #091116 65%);
  box-shadow: var(--shadow);
  user-select: none;
  touch-action: none;
}

.camera-stage video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 250ms ease;
}

.camera-stage.has-camera video {
  opacity: 1;
}

.camera-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  text-align: center;
  transition: opacity 250ms ease;
}

.camera-stage.has-camera .camera-placeholder {
  opacity: 0;
  pointer-events: none;
}

.camera-stage.has-reference:not(.has-camera) .camera-placeholder {
  opacity: 0;
}

.camera-placeholder strong {
  margin-top: 9px;
  color: var(--muted-strong);
  font-size: 14px;
}

.camera-placeholder span {
  max-width: 260px;
  font-size: 11px;
  line-height: 1.5;
}

.placeholder-orbit {
  display: grid;
  place-items: center;
  width: 80px;
  height: 80px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  box-shadow: 0 0 0 14px rgba(97, 169, 180, 0.035);
}

.placeholder-orbit svg {
  width: 30px;
  height: 30px;
}

#referenceOverlay {
  position: absolute;
  left: 50%;
  top: 50%;
  display: none;
  max-width: min(72%, 720px);
  max-height: 78%;
  transform-origin: center;
  cursor: grab;
  will-change: transform, filter, opacity;
}

#referenceOverlay.is-visible {
  display: block;
}

#referenceOverlay.is-dragging {
  cursor: grabbing;
}

#referenceOverlay.is-locked {
  cursor: default;
}

.stage-grid {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: none;
  pointer-events: none;
  background-image:
    linear-gradient(to right, transparent calc(33.333% - .5px), rgba(62, 210, 228, .58) 33.333%, transparent calc(33.333% + .5px)),
    linear-gradient(to right, transparent calc(66.666% - .5px), rgba(62, 210, 228, .58) 66.666%, transparent calc(66.666% + .5px)),
    linear-gradient(to bottom, transparent calc(33.333% - .5px), rgba(62, 210, 228, .58) 33.333%, transparent calc(33.333% + .5px)),
    linear-gradient(to bottom, transparent calc(66.666% - .5px), rgba(62, 210, 228, .58) 66.666%, transparent calc(66.666% + .5px));
}

.stage-grid.is-visible {
  display: block;
}

.stage-corners {
  position: absolute;
  inset: 14px;
  pointer-events: none;
  opacity: 0.48;
}

.stage-corners i {
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--accent);
  border-style: solid;
}

.stage-corners i:nth-child(1) { top: 0; left: 0; border-width: 2px 0 0 2px; }
.stage-corners i:nth-child(2) { top: 0; right: 0; border-width: 2px 2px 0 0; }
.stage-corners i:nth-child(3) { bottom: 0; left: 0; border-width: 0 0 2px 2px; }
.stage-corners i:nth-child(4) { right: 0; bottom: 0; border-width: 0 2px 2px 0; }

.stage-hint {
  position: absolute;
  z-index: 5;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  padding: 7px 11px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 8px;
  background: rgba(4, 10, 13, 0.72);
  color: rgba(255,255,255,.78);
  font-size: 10px;
  opacity: 0;
  pointer-events: none;
  backdrop-filter: blur(8px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.stage-hint.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.camera-toolbar {
  display: grid;
  grid-template-columns: 1fr 1fr 1.6fr 1fr 1fr;
  align-items: center;
  width: min(100%, 620px);
  min-height: 62px;
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: 0 12px 35px rgba(0,0,0,.17);
}

.tool-button {
  width: 42px;
  height: 42px;
  margin: auto;
  border-radius: 10px;
  color: var(--muted-strong);
}

.shutter-button {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin: auto;
  border: 2px solid var(--accent);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
}

.shutter-button span {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--text);
  transition: transform 120ms ease;
}

.shutter-button:active span {
  transform: scale(.88);
}

.inspector {
  border-left: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 65%, var(--bg));
  padding: 24px;
}

.inspector-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.inspector h2,
.studio-controls h2 {
  margin: 4px 0 0;
  font-size: 20px;
  letter-spacing: -.025em;
}

.danger-button:hover {
  color: var(--danger);
}

.reference-preview {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 126px;
  margin: 18px 0 22px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 10px;
  background:
    linear-gradient(45deg, var(--surface-soft) 25%, transparent 25%) 0 0/18px 18px,
    linear-gradient(-45deg, var(--surface-soft) 25%, transparent 25%) 0 9px/18px 18px,
    linear-gradient(45deg, transparent 75%, var(--surface-soft) 75%) 9px -9px/18px 18px,
    linear-gradient(-45deg, transparent 75%, var(--surface-soft) 75%) -9px 0/18px 18px,
    var(--surface-raised);
}

.reference-preview > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 11px;
}

.reference-preview img {
  display: none;
  width: 100%;
  height: 145px;
  object-fit: contain;
  background: rgba(255,255,255,.94);
}

.reference-preview.has-image img {
  display: block;
}

.reference-preview.has-image > div {
  display: none;
}

.control-list {
  display: flex;
  flex-direction: column;
  gap: 19px;
}

.range-control {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 12px;
  color: var(--muted-strong);
  font-size: 12px;
}

.range-control > span,
.segmented-control-row > span,
.toggle-row > span {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.range-control svg,
.segmented-control-row svg,
.toggle-row svg {
  width: 17px;
  height: 17px;
  color: var(--muted);
}

.range-control output {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  height: 3px;
  margin: 4px 0 0;
  appearance: none;
  border-radius: 3px;
  background: linear-gradient(to right, var(--accent) var(--range-progress, 50%), var(--surface-soft) var(--range-progress, 50%));
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  width: 13px;
  height: 13px;
  appearance: none;
  border: 2px solid var(--surface);
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

input[type="range"]::-moz-range-thumb {
  width: 11px;
  height: 11px;
  border: 2px solid var(--surface);
  border-radius: 50%;
  background: var(--accent);
}

.segmented-control-row,
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted-strong);
  font-size: 12px;
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  width: 86px;
  padding: 3px;
  border-radius: 8px;
  background: var(--surface-soft);
}

.segmented button {
  height: 30px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}

.segmented button[aria-pressed="true"] {
  background: var(--accent-soft);
  color: var(--accent);
}

.toggle-row {
  position: relative;
  min-height: 26px;
  cursor: pointer;
}

.toggle-row input {
  position: absolute;
  right: 0;
  width: 42px;
  height: 24px;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.toggle-row > i {
  position: relative;
  width: 42px;
  height: 24px;
  border-radius: 999px;
  background: #536168;
  transition: background 160ms ease;
}

.toggle-row > i::after {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: white;
  box-shadow: 0 2px 5px rgba(0,0,0,.25);
  content: "";
  transition: transform 160ms ease;
}

.toggle-row input:checked + i {
  background: var(--accent);
}

.toggle-row input:checked + i::after {
  transform: translateX(18px);
}

.save-project-button {
  width: 100%;
  margin-top: 24px;
}

.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 38px 24px;
}

.view-header h1 {
  margin: 4px 0 6px;
  font-size: 34px;
  letter-spacing: -.05em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.file-button {
  position: relative;
}

.studio-view,
.projects-view {
  overflow-y: auto;
  background:
    radial-gradient(circle at 75% -15%, rgba(62, 210, 228, .08), transparent 30%),
    var(--bg);
}

.studio-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  gap: 20px;
  height: calc(100% - 126px);
  min-height: 480px;
  padding: 0 38px 34px;
}

.canvas-panel {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    linear-gradient(45deg, rgba(255,255,255,.025) 25%, transparent 25%) 0 0/24px 24px,
    linear-gradient(-45deg, rgba(255,255,255,.025) 25%, transparent 25%) 0 12px/24px 24px,
    #0a1217;
}

#studioCanvas {
  display: none;
  max-width: 100%;
  max-height: 100%;
  box-shadow: 0 16px 45px rgba(0,0,0,.3);
}

#studioCanvas.is-visible {
  display: block;
}

.canvas-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--muted);
  text-align: center;
}

.canvas-empty[hidden] {
  display: none;
}

.canvas-empty svg {
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
}

.canvas-empty strong {
  color: var(--text);
  font-size: 18px;
}

.canvas-empty span {
  max-width: 310px;
  margin: 6px 0 20px;
  font-size: 12px;
}

.studio-controls {
  display: flex;
  flex-direction: column;
  gap: 25px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(235px, 1fr));
  gap: 18px;
  padding: 8px 38px 38px;
}

.project-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  transition: transform 170ms ease, border-color 170ms ease;
}

.project-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
}

.project-card img {
  display: block;
  width: 100%;
  height: 180px;
  object-fit: contain;
  background: white;
}

.project-card-content {
  padding: 16px;
}

.project-card h2 {
  margin: 0 0 5px;
  font-size: 15px;
}

.project-card p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
}

.project-card-actions {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.project-card-actions button {
  flex: 1;
  min-height: 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-raised);
  color: var(--muted-strong);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}

.project-card-actions button:hover {
  border-color: var(--accent);
  color: var(--text);
}

.project-card-actions .delete-project:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.projects-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 55vh;
  padding: 30px;
  text-align: center;
}

.projects-empty[hidden] {
  display: none;
}

.empty-icon {
  display: grid;
  place-items: center;
  width: 80px;
  height: 80px;
  margin-bottom: 18px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--surface);
  color: var(--accent);
  transform: rotate(-3deg);
}

.empty-icon svg {
  width: 34px;
  height: 34px;
}

.projects-empty h2 {
  margin: 0;
  font-size: 23px;
  letter-spacing: -.035em;
}

.projects-empty p {
  max-width: 370px;
  margin: 8px 0 20px;
  color: var(--muted);
  font-size: 13px;
}

.modal-backdrop {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(2, 7, 10, .72);
  backdrop-filter: blur(12px);
}

.modal-backdrop[hidden] {
  display: none;
}

.modal {
  position: relative;
  width: min(100%, 500px);
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  background: var(--surface);
  padding: 34px;
  box-shadow: 0 30px 90px rgba(0,0,0,.5);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
}

.modal h2 {
  margin: 7px 0 10px;
  font-size: 28px;
  letter-spacing: -.045em;
}

.modal > p:not(.panel-kicker) {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.onboarding-visual {
  display: grid;
  place-items: center;
  height: 170px;
  margin: -12px -12px 26px;
  overflow: hidden;
  border-radius: 13px;
  background: radial-gradient(circle at 50% 50%, rgba(62, 210, 228, .18), transparent 50%), #091318;
}

.mini-stage {
  position: relative;
  width: 210px;
  height: 125px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 8px;
  background: linear-gradient(140deg, #27414b, #102027);
  box-shadow: 0 16px 38px rgba(0,0,0,.4);
  transform: rotate(-2deg);
}

.mini-stage::before,
.mini-stage::after {
  position: absolute;
  content: "";
}

.mini-stage::before {
  inset: 22px 38px;
  border: 2px solid rgba(255,255,255,.65);
  border-width: 0 0 2px 2px;
  border-radius: 50% 20% 55% 30%;
  transform: rotate(-30deg);
}

.mini-stage::after {
  top: 16px;
  bottom: 16px;
  left: 50%;
  border-left: 1px solid var(--accent);
}

.mini-stage span {
  position: absolute;
  top: 50%;
  right: 12px;
  left: 12px;
  border-top: 1px solid var(--accent);
}

.mini-stage i,
.mini-stage b {
  position: absolute;
  width: 8px;
  height: 8px;
  border: 1px solid var(--accent);
  border-radius: 50%;
}

.mini-stage i { top: 18px; left: 35px; }
.mini-stage b { right: 40px; bottom: 26px; }

.onboarding-modal ol {
  display: grid;
  gap: 10px;
  margin: 24px 0;
  padding: 0;
  list-style: none;
}

.onboarding-modal li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted-strong);
  font-size: 12px;
}

.onboarding-modal li span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

.wide-button {
  width: 100%;
}

.help-steps {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.help-steps article {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-raised);
}

.help-steps article > span {
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
}

.help-steps h3 {
  margin: 0 0 4px;
  font-size: 13px;
}

.help-steps p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

.toast-region {
  position: fixed;
  z-index: 200;
  right: 18px;
  bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 250px;
  max-width: 360px;
  padding: 13px 15px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--shadow);
  color: var(--muted-strong);
  font-size: 12px;
  backdrop-filter: blur(12px);
  animation: toast-in 220ms ease both;
}

.toast::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  content: "";
}

.toast.is-error::before {
  background: var(--danger);
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
}

@media (max-width: 1120px) {
  :root { --sidebar-w: 82px; }
  .trace-view { grid-template-columns: minmax(190px, 230px) minmax(370px, 1fr) minmax(240px, 275px); }
  .source-panel, .inspector { padding: 20px; }
  .source-copy > p:last-child { display: none; }
  .upload-dropzone { min-height: 140px; }
  .stage-column { padding: 16px; }
}

@media (max-width: 900px) {
  body { overflow: auto; }
  .app-shell {
    display: grid;
    grid-template:
      "topbar" 62px
      "main" calc(100vh - 126px)
      "sidebar" 64px
      / 1fr;
  }
  .topbar { padding: 0 14px; }
  .brand { font-size: 18px; }
  .brand-mark { width: 28px; height: 28px; gap: 7px; }
  .topbar-status { display: none; }
  .topbar { grid-template-columns: 1fr auto; }
  .topbar-actions { grid-column: 2; }
  .sidebar {
    flex-direction: row;
    grid-area: sidebar;
    padding: 0;
    border-top: 1px solid var(--border);
    border-right: 0;
  }
  .nav-item { flex: 1; min-height: 64px; gap: 3px; }
  .nav-item::before { inset: auto 24% 0; width: auto; height: 3px; border-radius: 3px 3px 0 0; }
  .nav-item svg { width: 21px; height: 21px; }
  .sidebar-spacer, .nav-item-small { display: none; }
  .trace-view {
    display: grid;
    grid-template-columns: 1fr;
    height: auto;
    min-height: 100%;
    overflow-y: auto;
  }
  .source-panel {
    order: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    border: 0;
    border-top: 1px solid var(--border);
    padding: 18px;
  }
  .source-copy, .or-divider, .privacy-note { display: none; }
  .upload-dropzone { min-height: 58px; margin: 0; }
  .upload-dropzone svg { width: 22px; height: 22px; margin: 0; }
  .upload-dropzone span { display: none; }
  .primary-button { min-height: 48px; }
  .stage-column { order: 1; min-height: calc(100vh - 126px); padding: 12px; }
  .camera-stage { height: calc(100vh - 222px); min-height: 380px; }
  .camera-toolbar { min-height: 60px; }
  .inspector { order: 3; border: 0; border-top: 1px solid var(--border); padding: 22px 18px 34px; }
  .reference-preview { max-width: 320px; }
  .studio-workspace { grid-template-columns: 1fr; height: auto; min-height: 0; padding: 0 18px 30px; }
  .canvas-panel { min-height: 55vh; }
  .studio-controls { margin-bottom: 30px; }
  .view-header { padding: 24px 18px 18px; }
  .view-header h1 { font-size: 29px; }
}

@media (max-width: 560px) {
  .topbar-actions .icon-label-button span { display: none; }
  .topbar-actions .icon-label-button { width: 42px; padding: 0; }
  .stage-column { min-height: 610px; }
  .camera-stage { height: 500px; min-height: 500px; }
  .source-panel { position: sticky; bottom: 0; z-index: 8; background: var(--bg); }
  .header-actions { width: 100%; }
  .view-header { align-items: flex-start; flex-direction: column; }
  .header-actions > * { flex: 1; }
  .projects-grid { grid-template-columns: 1fr; padding: 6px 18px 28px; }
  .modal { padding: 28px 22px; }
  .onboarding-visual { height: 140px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}