/* ===========================
   Client 3D viewer
   =========================== */

.viewer-shell {
  min-height: 100vh;
  background: var(--bg-page);
  color: var(--text-main);
}

.viewer-shell .page-main {
  padding: 20px;
  min-height: 0;
}

.viewer-shell .page-main-inner {
  min-height: var(--viewer-available, calc(100vh - 120px));
  height: var(--viewer-available, calc(100vh - 120px));
}

.viewer-card {
  padding: 0;
  overflow: hidden;
  border-radius: 22px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
  min-height: var(--viewer-available, calc(100vh - 120px));
  height: 100%;
  display: flex;
  flex-direction: column;
}

.viewer-stage {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  background: #f3f6fb;
}
.viewer-drop-hint {
  position: absolute;
  inset: 16px;
  border: 2px dashed rgba(37, 99, 235, 0.4);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #1e3a8a;
  font-weight: 700;
  font-size: 0.95rem;
  opacity: 0;
  pointer-events: none;
  z-index: 4;
  transition: opacity 0.2s ease, transform 0.2s ease;
  transform: scale(0.98);
}
.viewer-stage.is-dragover .viewer-drop-hint {
  opacity: 1;
  transform: scale(1);
}

#viewer-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  min-height: 100%;
  z-index: 1;
}

.viewer-hud {
  position: relative;
  margin: 12px 12px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 12px 14px;
  box-shadow: var(--shadow-soft);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease, max-height 0.2s ease, padding 0.2s ease;
}

.viewer-hud .hud-left,
.viewer-hud .hud-right {
  pointer-events: auto;
}

.viewer-hud .hud-right {
  align-self: center;
}

.viewer-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: rgba(15, 23, 42, 0.04);
}

.viewer-download-btn svg {
  width: 18px;
  height: 18px;
}

.viewer-download-btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

.viewer-hud-toggle {
  display: none;
  position: absolute;
  top: 8px;
  right: 8px;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: #ffffff;
  color: var(--text-main);
  box-shadow: var(--shadow-soft);
  z-index: 6;
  cursor: pointer;
  pointer-events: auto;
}

.viewer-hud-toggle-icon {
  display: inline-block;
  width: 9px;
  height: 9px;
  border: solid currentColor;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.viewer-shell:not(.hud-collapsed) .viewer-hud-toggle-icon {
  transform: rotate(-135deg);
}

.viewer-hud-content {
  display: flex;
  width: 100%;
  justify-content: space-between;
  gap: 16px;
}

.hud-title {
  display: none;
}

.hud-subtitle {
  margin-top: 6px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hud-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.badge-soft {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.06);
  border: 1px solid rgba(15, 23, 42, 0.08);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
}

.hud-meta-item {
  white-space: nowrap;
}

.hud-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.hud-summary-name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-main);
}

.hud-summary-pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.04);
  border: 1px solid rgba(15, 23, 42, 0.08);
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 600;
}

.hud-summary-status.status-loading {
  background: #e0ecff;
  color: #1e3a8a;
}
.hud-summary-status.status-ok {
  background: #dcfce7;
  color: #14532d;
}
.hud-summary-status.status-error {
  background: #fee2e2;
  color: #7f1d1d;
}

body.theme-dark .hud-summary-pill:not(.hud-summary-status) {
  background: rgba(148, 163, 184, 0.12);
  border-color: rgba(148, 163, 184, 0.2);
  color: #cbd5f5;
}

body.theme-dark .badge-soft {
  background: rgba(148, 163, 184, 0.12);
  border-color: rgba(148, 163, 184, 0.2);
  color: #cbd5f5;
}

.viewer-progress {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.viewer-progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(15, 23, 42, 0.08);
  border-radius: 999px;
  overflow: hidden;
}

.viewer-progress-fill {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #38bdf8, #2563eb);
  border-radius: 999px;
  transition: width 0.2s ease;
}

.viewer-progress-fill.is-indeterminate {
  width: 40%;
  animation: progress-pulse 1s ease-in-out infinite;
}

.viewer-progress-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
}

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

.viewer-progress.is-hidden {
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
}

.viewer-loading {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
  transition: opacity 0.2s ease;
}

.viewer-loading.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.viewer-loading-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
}

.viewer-loading-spinner {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid rgba(37, 99, 235, 0.2);
  border-top-color: #2563eb;
  animation: spin 0.9s linear infinite;
}

.viewer-loading-title {
  font-weight: 700;
  color: var(--text-main);
}

.viewer-loading-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.hud-meta-item {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.04);
  border: 1px solid rgba(15, 23, 42, 0.08);
  color: var(--text-muted);
  font-size: 0.74rem;
  font-weight: 600;
}

.viewer-status.status-loading {
  background: #e0ecff;
  color: #1e3a8a;
}

.viewer-status.status-ok {
  background: #dcfce7;
  color: #14532d;
}

.viewer-status.status-error {
  background: #fee2e2;
  color: #7f1d1d;
}

.viewer-bottom-controls {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  gap: 8px;
  align-items: center;
  z-index: 4;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 8px 12px;
  box-shadow: var(--shadow-soft);
}

.viewer-bottom-controls .btn,
.viewer-bottom-controls .color-picker-btn {
  pointer-events: auto;
}

.viewer-toolbelt {
  position: absolute;
  top: 110px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
  z-index: 4;
  pointer-events: auto;
}

.tool-btn {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  border: 1px solid var(--border-subtle);
  background: #ffffff;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.tool-btn svg {
  width: 18px;
  height: 18px;
}

.tool-color {
  position: relative;
}

.tool-color input[type="color"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  border: none;
  padding: 0;
}

.tool-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: rgba(56, 189, 248, 0.6);
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.14);
}

.tool-btn.is-active {
  background: #2563eb;
  border-color: #1d4ed8;
  color: #ffffff;
}

.tool-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.tool-btn:focus-visible {
  outline: 2px solid #38bdf8;
  outline-offset: 2px;
}

.tool-btn[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  background: #0f172a;
  color: #ffffff;
  font-size: 0.72rem;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.18);
}

.tool-btn:hover::after,
.tool-btn:focus-visible::after {
  opacity: 1;
}

.color-picker-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(5, 117, 230, 0.08), rgba(49, 195, 255, 0.16));
  border: 1px solid rgba(5, 117, 230, 0.25);
  padding: 7px 14px;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
  font-weight: 600;
  letter-spacing: 0.01em;
}

#color-picker {
  appearance: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: none;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.25), inset 0 0 0 2px rgba(255, 255, 255, 0.65);
  background: transparent;
  cursor: pointer;
  padding: 0;
  overflow: hidden;
}

#color-picker::-webkit-color-swatch,
#color-picker::-moz-color-swatch {
  border: none;
  border-radius: 50%;
  box-shadow: none;
  width: 100%;
  height: 100%;
}

#color-picker::-webkit-color-swatch-wrapper {
  padding: 0;
  border-radius: 50%;
}

#color-picker::-moz-focus-inner {
  padding: 0;
  border: 0;
}

.viewer-empty {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 10px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.92);
  color: #0f172a;
}

.viewer-empty-title {
  font-size: 1.3rem;
  font-weight: 800;
}

.viewer-empty-text {
  color: rgba(15, 23, 42, 0.7);
}

.viewer-error {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 10px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.92);
  color: #0f172a;
}

.viewer-error-title {
  font-size: 1.25rem;
  font-weight: 800;
}

.viewer-error-text {
  color: rgba(15, 23, 42, 0.7);
  max-width: 420px;
}

body.theme-dark .viewer-card {
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

body.theme-dark .viewer-stage {
  background: #0b1120;
}

body.theme-dark .viewer-hud,
body.theme-dark .viewer-bottom-controls {
  background: rgba(15, 23, 42, 0.88);
  border-color: rgba(148, 163, 184, 0.22);
}

body.theme-dark .viewer-progress-bar {
  background: rgba(148, 163, 184, 0.18);
}

body.theme-dark .viewer-progress-fill {
  background: linear-gradient(90deg, #60a5fa, #38bdf8);
}

body.theme-dark .viewer-toolbelt {
  background: rgba(15, 23, 42, 0.9);
  border-color: rgba(148, 163, 184, 0.22);
}

body.theme-dark .tool-btn {
  background: #0f172a;
  border-color: rgba(148, 163, 184, 0.28);
  color: #e2e8f0;
}

body.theme-dark .tool-btn.is-active {
  background: #3b82f6;
  border-color: #1d4ed8;
  color: #ffffff;
}

body.theme-dark .tool-btn[data-tooltip]::after {
  background: #e2e8f0;
  color: #0f172a;
}

body.theme-dark .hud-meta-item {
  background: rgba(148, 163, 184, 0.12);
  border-color: rgba(148, 163, 184, 0.2);
  color: #cbd5f5;
}

body.theme-dark .color-picker-btn {
  background: linear-gradient(135deg, rgba(79, 156, 255, 0.18), rgba(45, 215, 255, 0.12));
  border-color: rgba(111, 182, 255, 0.4);
  color: #e2e8f0;
}

body.theme-dark .viewer-hud-toggle {
  background: rgba(15, 23, 42, 0.95);
  border-color: rgba(148, 163, 184, 0.28);
  color: #e2e8f0;
}

body.theme-dark .viewer-download-btn {
  background: rgba(148, 163, 184, 0.12);
  border-color: rgba(148, 163, 184, 0.28);
  color: #e2e8f0;
}

body.theme-dark .viewer-empty {
  background: rgba(11, 17, 32, 0.86);
  color: #e2e8f0;
}

body.theme-dark .viewer-empty-text {
  color: rgba(226, 232, 240, 0.78);
}

body.theme-dark .viewer-error {
  background: rgba(11, 17, 32, 0.86);
  color: #e2e8f0;
}

body.theme-dark .viewer-error-text {
  color: rgba(226, 232, 240, 0.78);
}

body.theme-dark .viewer-loading {
  background: rgba(11, 17, 32, 0.55);
}

body.theme-dark .viewer-loading-card {
  background: rgba(15, 23, 42, 0.92);
  border-color: rgba(148, 163, 184, 0.22);
}

body.theme-dark .viewer-loading-title {
  color: #e2e8f0;
}

body.theme-dark .viewer-loading-spinner {
  border-color: rgba(96, 165, 250, 0.25);
  border-top-color: #60a5fa;
}

@keyframes progress-pulse {
  0% { transform: translateX(-30%); opacity: 0.6; }
  50% { transform: translateX(30%); opacity: 1; }
  100% { transform: translateX(110%); opacity: 0.6; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 900px) {
  .viewer-shell .page-main-inner {
    min-height: var(--viewer-available, calc(100svh - 140px));
    height: var(--viewer-available, calc(100svh - 140px));
  }
  .viewer-stage {
    min-height: 0;
    height: auto;
  }
  .viewer-hud {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    margin: 12px 12px 0;
  }
}

@media (max-width: 640px) {
  .viewer-shell .page-main {
    padding: 12px 14px;
  }
  .viewer-stage {
    min-height: 0;
    height: auto;
  }
  .viewer-bottom-controls {
    bottom: 12px;
    left: 12px;
    right: 12px;
    width: auto;
    transform: none;
    padding: 6px 10px;
    justify-content: stretch;
    gap: 8px;
  }
  .viewer-bottom-controls .btn,
  .viewer-bottom-controls .color-picker-btn {
    font-size: 0.78rem;
    padding: 5px 8px;
    flex: 1;
    justify-content: center;
  }
  .viewer-bottom-controls .color-picker-btn {
    width: 100%;
  }
  .viewer-toolbelt {
    top: auto;
    bottom: 72px;
    right: auto;
    left: 50%;
    transform: translateX(-50%);
    flex-direction: row;
    gap: 6px;
  }
  .tool-btn[data-tooltip]::after {
    right: 50%;
    top: auto;
    bottom: calc(100% + 6px);
    transform: translateX(50%);
  }
}

@media (max-width: 768px) {
  .viewer-hud-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .viewer-hud {
    max-height: 260px;
    overflow: visible;
  }
  .viewer-hud-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-right: 42px;
  }
  .hud-subtitle {
    display: none;
  }
  .hud-summary {
    gap: 6px;
  }
  .hud-meta {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }
  .hud-meta-item {
    padding: 4px 8px;
    font-size: 0.72rem;
    white-space: nowrap;
  }
  .viewer-hud .hud-right {
    width: 100%;
  }
  .viewer-download-btn {
    width: 100%;
    align-self: stretch;
    justify-content: center;
    padding: 6px 10px;
  }
  .viewer-shell.hud-collapsed .viewer-hud {
    max-height: none;
    min-height: 48px;
    height: auto;
    opacity: 1;
    padding: 6px 12px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    transform: none;
    align-items: center;
  }
  .viewer-shell.hud-collapsed .viewer-hud-content {
    display: flex;
    align-items: center;
    padding-right: 42px;
  }
  .viewer-shell.hud-collapsed .hud-left {
    width: 100%;
  }
  .viewer-shell.hud-collapsed .viewer-hud-toggle {
    top: 50%;
    transform: translateY(-50%);
  }
  .viewer-shell.hud-collapsed .hud-subtitle,
  .viewer-shell.hud-collapsed .hud-meta,
  .viewer-shell.hud-collapsed .hud-right {
    display: none;
  }
  .viewer-shell.hud-collapsed .hud-title {
    display: none;
  }
  .viewer-shell.hud-collapsed .hud-summary {
    flex-wrap: nowrap;
    gap: 6px;
  }
  .viewer-shell.hud-collapsed .hud-summary-name {
    max-width: 62%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .viewer-shell.hud-collapsed .hud-summary-pill {
    padding: 2px 6px;
    font-size: 0.68rem;
  }
}