@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  color-scheme: dark;
  --gaia-dark: #1A1A1B;
  --gaia-light: #F2EFE9;
  --gaia-accent: #BF91FF;
  --gaia-accent-hover: #D4AFFF;
  --gaia-accent-dim: rgba(191, 145, 255, 0.15);
  --glass-bg: rgba(26, 26, 27, 0.72);
  --glass-bg-light: rgba(242, 239, 233, 0.06);
  --glass-border: rgba(242, 239, 233, 0.08);
  --glass-border-hover: rgba(191, 145, 255, 0.25);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --glass-shadow-hover: 0 12px 48px rgba(191, 145, 255, 0.15);
  --glass-blur: blur(20px);
  --text-primary: #F2EFE9;
  --text-secondary: rgba(242, 239, 233, 0.6);
  --text-muted: rgba(242, 239, 233, 0.35);
  --success: #4ADE80;
  --warning: #FBBF24;
  --error: #F87171;
  --info: #60A5FA;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background: var(--gaia-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  letter-spacing: 0;
}

body::before,
body::after {
  content: '';
  position: fixed;
  z-index: -1;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.25;
  animation: float 20s ease-in-out infinite;
}

body::before {
  width: 600px;
  height: 600px;
  background: var(--gaia-accent);
  top: -200px;
  right: -100px;
  animation-delay: -5s;
}

body::after {
  width: 500px;
  height: 500px;
  background: #6366F1;
  bottom: -150px;
  left: -100px;
  animation-delay: -10s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -40px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

a { color: var(--gaia-accent); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--gaia-accent-hover); }

.panel, .card, .sidebar, .auth-panel, .viewer {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.panel:hover, .card:hover {
  border-color: var(--glass-border-hover);
  box-shadow: var(--glass-shadow-hover);
}

.auth-layout {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.auth-visual { display: none; }

.auth-panel {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.auth-panel h2 {
  text-align: center;
  font-size: 2rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.auth-panel h2::after {
  content: " 3D";
  background: linear-gradient(135deg, var(--gaia-accent), var(--gaia-accent-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-panel .muted {
  text-align: center;
  font-size: 0.875rem;
  margin: 0 0 1rem;
}

.stack { display: grid; gap: 1rem; }

.field { display: grid; gap: 0.4rem; }
.field span {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

input, textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(242, 239, 233, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
  outline: none;
}

input::placeholder, textarea::placeholder { color: var(--text-muted); }
input:focus, textarea:focus {
  border-color: var(--gaia-accent);
  box-shadow: 0 0 0 3px var(--gaia-accent-dim);
  background: rgba(242, 239, 233, 0.06);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 42px;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-smooth);
  white-space: nowrap;
}

.btn.primary, .btn-primary {
  background: linear-gradient(135deg, var(--gaia-accent), #9B6FD9);
  color: var(--gaia-dark);
  box-shadow: 0 4px 15px rgba(191, 145, 255, 0.3);
}

.btn.primary:hover, .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(191, 145, 255, 0.4);
}

.btn.ghost, .btn-secondary {
  background: var(--glass-bg-light);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}

.btn.ghost:hover, .btn-secondary:hover {
  border-color: var(--gaia-accent);
  color: var(--gaia-accent);
  background: var(--gaia-accent-dim);
}

.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.muted { color: var(--text-secondary); }
.error { color: var(--error); min-height: 22px; font-size: 0.85rem; }
.ok { color: var(--success); }

.shell {
  min-height: 100vh;
  display: block;
}

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  width: 260px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: space-between;
  background: transparent;
  border-right: 1px solid var(--glass-border);
}

.brand {
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 700;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--glass-border);
  display: block;
}

.brand span {
  background: linear-gradient(135deg, var(--gaia-accent), var(--gaia-accent-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mark { display: none; }

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-top: 1.5rem;
}

.sidebar-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--glass-border);
  display: grid;
  gap: 0.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 400;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 0;
  background: transparent;
  text-align: left;
  font-family: var(--font-sans);
}

.nav-item:hover {
  color: var(--text-primary);
  background: var(--glass-bg-light);
}

.nav-item.active {
  color: var(--gaia-accent);
  background: var(--gaia-accent-dim);
  font-weight: 500;
}

.nav-icon {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: currentColor;
}

.user-row {
  color: var(--text-primary);
  cursor: default;
}

.user-row:hover {
  background: transparent;
}

.workspace {
  min-height: 100vh;
  margin-left: 260px;
  padding: 2rem;
  display: grid;
  gap: 1.5rem;
}

.shell::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 260px;
  z-index: 90;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-right: 1px solid var(--glass-border);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.toolbar h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.dashboard-workspace {
  align-content: start;
}

.page-header {
  margin-bottom: 0.5rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.project-card {
  display: block;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all var(--transition-smooth);
}

.project-card:hover {
  transform: translateY(-2px);
}

.project-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.project-name {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.project-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.project-description {
  min-height: 42px;
  margin: 0 0 1rem;
}

.project-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.project-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.badge-active {
  background: rgba(74, 222, 128, 0.12);
  color: var(--success);
}

.project-delete,
.dataset-delete {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.05rem;
  line-height: 1;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.project-delete:hover,
.dataset-delete:hover {
  color: var(--error);
  border-color: rgba(248, 113, 113, 0.25);
  background: rgba(248, 113, 113, 0.12);
}

.empty-state {
  min-height: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px dashed var(--glass-border);
  border-radius: var(--radius-lg);
  background: rgba(242, 239, 233, 0.03);
  padding: 2rem;
}

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

.empty-state-icon {
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-lg);
  background: var(--gaia-accent-dim);
  color: var(--gaia-accent);
  font-size: 2rem;
  margin-bottom: 1rem;
}

.empty-state h2 {
  margin: 0 0 0.5rem;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.modal-overlay.active {
  opacity: 1;
}

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

.modal {
  width: min(520px, 100%);
  border-radius: var(--radius-lg);
  transform: translateY(10px) scale(0.98);
  transition: transform var(--transition-fast);
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem;
  border-bottom: 1px solid var(--glass-border);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.1rem;
}

.modal form {
  padding: 1.5rem;
}

.modal-close {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 0;
  background: var(--glass-bg-light);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.25rem;
}

.modal-close:hover {
  color: var(--gaia-accent);
  background: var(--gaia-accent-dim);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.card {
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  min-height: 150px;
  transition: all var(--transition-smooth);
}

.card:hover { transform: translateY(-2px); }
.card h2, .card h3, .panel h2 { margin: 0 0 0.65rem; }
.meta { display: flex; gap: 1rem; flex-wrap: wrap; color: var(--text-secondary); font-size: 0.8125rem; }

.split {
  grid-template-columns: 340px minmax(0, 1fr);
  margin-left: 0;
  padding: 1.5rem;
}

.split::before, .split + *::before { content: none; }
.split .sidebar {
  position: static;
  width: auto;
  min-height: calc(100vh - 3rem);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}

.viewer {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #050506;
  min-height: calc(100vh - 3rem);
}

canvas { width: 100%; height: 100%; display: block; }

.viewer-hud {
  position: absolute;
  left: 16px;
  bottom: 16px;
  right: 16px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  pointer-events: none;
}

.pill {
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  background: rgba(26, 26, 27, 0.72);
  backdrop-filter: var(--glass-blur);
  padding: 8px 12px;
  color: var(--text-secondary);
  font-size: 13px;
}

.dropzone {
  display: block;
  border: 1px dashed rgba(242, 239, 233, .22);
  border-radius: var(--radius-md);
  padding: 1rem;
  background: rgba(242, 239, 233, .04);
}

/* Viewer */
.viewer-page {
  width: 100vw;
  height: 100vh;
  min-height: 100vh;
  overflow: hidden;
  line-height: 1;
}

html:has(.viewer-page),
body.viewer-page {
  width: 100%;
  height: 100%;
  min-height: 100%;
}

body.viewer-page::before,
body.viewer-page::after {
  content: none;
}

.viewer-layout {
  display: block;
  width: 100vw;
  height: 100vh;
  min-height: 100vh;
  overflow: hidden;
  position: relative;
}

.viewer-sidebar {
  width: 300px;
  height: auto;
  position: absolute;
  inset: 1rem auto 1rem 1rem;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  z-index: 10;
  flex-shrink: 0;
}

.viewer-sidebar-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.viewer-back {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.viewer-back:hover {
  border-color: var(--gaia-accent);
  color: var(--gaia-accent);
}

.viewer-project-name {
  font-size: 0.95rem;
  font-weight: 600;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.viewer-sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
}

.sidebar-section {
  margin-bottom: 1.5rem;
}

.sidebar-section-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
  padding: 0 0.25rem;
}

.project-info {
  padding: 0.85rem;
  background: var(--glass-bg-light);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

.layer-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.35rem;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  background: rgba(242, 239, 233, 0.035);
}

.layer-header,
.layer-row {
  width: 100%;
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr) 28px 28px 28px;
  align-items: center;
  gap: 0.35rem;
}

.layer-header {
  padding: 0.2rem 0.35rem 0.35rem;
  color: var(--text-muted);
  font-size: 0.58rem;
  text-transform: uppercase;
}

.layer-row {
  min-height: 30px;
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.35rem;
  color: var(--text-secondary);
}

.layer-row:hover {
  background: var(--glass-bg-light);
  color: var(--text-primary);
}

.layer-row.frozen {
  opacity: 0.58;
}

.layer-row.off .layer-color {
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--text-muted);
}

.layer-row.locked .layer-name::after {
  content: " verrouille";
  color: var(--text-muted);
  font-size: 0.62rem;
}

.layer-color {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gaia-accent);
  box-shadow: 0 0 0 3px var(--gaia-accent-dim);
}

.layer-color-blue { background: var(--info); box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.16); }
.layer-color-green { background: var(--success); box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.16); }

.layer-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.75rem;
}

.layer-count {
  margin-left: 0.25rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.layer-toggle {
  width: 26px;
  height: 24px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.72rem;
}

.layer-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.layer-toggle.active {
  color: var(--gaia-accent);
  background: var(--gaia-accent-dim);
}

.project-info-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  padding: 0.2rem 0;
}

.project-info-label {
  color: var(--text-muted);
}

.project-info-value {
  color: var(--text-primary);
  font-family: var(--font-mono);
}

.dataset-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.65rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  border: 0;
  background: transparent;
  font-family: var(--font-sans);
  text-align: left;
}

.dataset-item:hover {
  background: var(--glass-bg-light);
  color: var(--text-primary);
}

.dataset-item.active {
  background: var(--gaia-accent-dim);
  color: var(--gaia-accent);
}

.dataset-icon {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  position: relative;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.dataset-icon:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  transform: scale(1.08);
}

.dataset-icon.hidden-cloud {
  opacity: 0.55;
}

.dataset-icon.hidden-cloud::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transform: rotate(-45deg);
}

.dataset-name {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dataset-main {
  flex: 1;
  min-width: 0;
  display: block;
}

.dataset-error {
  display: block;
  margin-top: 0.2rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--error);
  font-size: 0.68rem;
}

.dataset-size {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.dataset-status {
  font-size: 0.6rem;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  text-transform: uppercase;
  font-weight: 600;
}

.status-termine { background: rgba(0, 200, 100, 0.2); color: #00c864; }
.status-en_attente { background: rgba(255, 170, 0, 0.2); color: #ffaa00; }
.status-en_cours { background: rgba(0, 150, 255, 0.2); color: #0096ff; }
.status-erreur { background: rgba(255, 80, 80, 0.2); color: #ff5050; }

.viewer-list-empty {
  padding: 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.upload-zone {
  display: block;
  border: 2px dashed var(--glass-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: transparent;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--gaia-accent);
  background: var(--gaia-accent-dim);
}

.upload-zone-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  opacity: 0.5;
}

.upload-zone-text {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.upload-zone-hint {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

.viewer-canvas-container {
  width: 100vw;
  min-width: 100vw;
  height: 100vh;
  position: relative;
  background: #0a0a0a;
  overflow: hidden;
}

.viewer-canvas-container:fullscreen {
  width: 100vw;
  height: 100vh;
}

.viewer-layout:fullscreen {
  width: 100vw;
  height: 100vh;
  background: #0a0a0a;
}

#viewerCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.viewer-toolbar {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.35rem;
  z-index: 5;
}

.viewer-toolbar-right {
  position: absolute;
  top: 50%;
  right: 1rem;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  z-index: 5;
}

.viewer-toolbar-left {
  position: absolute;
  top: 50%;
  left: calc(300px + 2rem);
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  z-index: 5;
}

.toolbar-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-size: 0.85rem;
}

.toolbar-btn:hover {
  border-color: var(--gaia-accent);
  color: var(--gaia-accent);
}

.toolbar-btn.active {
  background: var(--gaia-accent-dim);
  border-color: var(--gaia-accent);
  color: var(--gaia-accent);
}

.color-menu-wrap {
  position: relative;
}

.color-menu {
  position: absolute;
  top: 0;
  right: calc(100% + 8px);
  width: 210px;
  padding: 4px;
  background: rgba(30, 30, 30, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.color-menu[hidden] {
  display: none;
}

.color-menu-item {
  box-sizing: border-box;
  min-height: 32px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  width: 100%;
  flex: 0 0 auto;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 0.8rem;
  text-align: left;
  white-space: nowrap;
  transition: background 0.15s;
}

.color-menu-item:hover {
  background: rgba(255, 255, 255, 0.1);
}

.color-menu-item.active {
  color: var(--gaia-accent);
}

.color-menu-item.active::before {
  content: "✓";
  font-size: 0.7rem;
  color: var(--gaia-accent);
  width: 10px;
  flex: 0 0 10px;
}

.color-menu-item:not(.active)::before {
  content: "";
  width: 10px;
  flex: 0 0 10px;
}

.color-menu-icon {
  font-size: 0.9rem;
  text-align: center;
  width: 14px;
}

.viewer-info,
.viewer-coords {
  position: absolute;
  bottom: 1rem;
  padding: 0.5rem 0.85rem;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  z-index: 5;
}

.viewer-info { left: calc(300px + 2rem); }
.viewer-coords { right: 1rem; }

.viewer-loading,
.viewer-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--text-secondary);
  z-index: 2;
}

.viewer-loading {
  background: rgba(10, 10, 10, 0.95);
  z-index: 20;
}

.viewer-loading[hidden],
.viewer-empty[hidden] {
  display: none;
}

.viewer-empty-icon {
  font-size: 3rem;
  opacity: 0.3;
}

.viewer-empty-text {
  font-size: 0.95rem;
}

.viewer-empty-hint {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.viewer-sidebar-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--glass-border);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
}

.point-size-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
}

.point-size-control label {
  font-size: 0.75rem;
  color: var(--text-muted);
  min-width: 40px;
}

.point-size-control input[type=range] {
  flex: 1;
  accent-color: var(--gaia-accent);
  min-height: auto;
  padding: 0;
}

.point-size-value {
  font-size: 0.75rem;
  color: var(--text-primary);
  min-width: 36px;
  text-align: right;
  font-family: var(--font-mono);
}

.lod-control {
  padding: 0.55rem 0 0.35rem;
}

.lod-label-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
  margin-bottom: 0.35rem;
  font-size: 0.62rem;
  color: var(--text-muted);
  letter-spacing: 0;
  text-align: center;
}

.lod-control input[type=range] {
  width: 100%;
  accent-color: var(--gaia-accent);
  min-height: auto;
  padding: 0;
}

.lod-value {
  margin-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  text-align: center;
}

.upload-file-name {
  margin-bottom: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.upload-percent {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

.progress-bar {
  height: 4px;
  background: var(--glass-bg-light);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gaia-accent), var(--gaia-accent-hover));
  border-radius: 2px;
  transition: width var(--transition-smooth);
}

@media (max-width: 860px) {
  .shell::before { display: none; }
  .topbar {
    position: static;
    width: auto;
    height: auto;
    flex-direction: row;
    align-items: center;
    border-right: 0;
    border-bottom: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
  }
  .workspace, .split {
    margin-left: 0;
    grid-template-columns: 1fr;
    padding: 1rem;
  }
  .workspace::before { display: none; }
  .auth-layout { padding: 1rem; }
  .viewer { min-height: 520px; }
}