/* 
 * Slide Studio Shell Layout
 * Implements the 3-column Workspace Architecture 
 */

html, body {
  margin: 0; padding: 0; width: 100%; height: 100%;
  overflow: hidden; /* Prevent page-level scrolling, panels handle their own */
  background: var(--qss-shell-bg);
  color: var(--qss-shell-text);
  font-family: var(--qss-font-ui);
}

.qss-app-version-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 120;
  pointer-events: none;
  display: flex;
  justify-content: center;
  padding: 2px 12px 4px;
  font-size: 10px;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: color-mix(in srgb, var(--qss-shell-muted, #94a3b8) 78%, transparent);
  background: linear-gradient(to top, color-mix(in srgb, var(--qss-shell-bg, #0f172a) 92%, transparent), transparent);
}

.qss-app-version-footer--stale {
  color: #fbbf24;
}

#qss-app-version-label {
  max-width: min(960px, 100%);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.qss-sw-update-banner {
  position: fixed;
  bottom: 28px;
  right: 16px;
  z-index: 9999;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  max-width: min(420px, calc(100vw - 32px));
  padding: 14px 16px;
  border-radius: 10px;
  background: #6366f1;
  color: #fff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  font-family: Inter, system-ui, sans-serif;
}

.qss-sw-update-banner__title {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 700;
}

.qss-sw-update-banner__text,
.qss-sw-update-banner__hint {
  margin: 0;
  font-size: 12px;
  opacity: 0.92;
}

.qss-sw-update-banner__hint {
  margin-top: 4px;
  opacity: 0.8;
}

.qss-sw-update-banner__btn {
  flex-shrink: 0;
  border: none;
  border-radius: 6px;
  padding: 8px 14px;
  background: #fff;
  color: #6366f1;
  font-weight: 700;
  cursor: pointer;
}

.qss-sw-update-banner__btn:disabled {
  opacity: 0.7;
  cursor: wait;
}

* { box-sizing: border-box; }

/* Main App Container */
.qss-app {
  display: flex;
  flex-direction: column;
  width: 100vw;
  height: 100vh;
}

/* Header */
.qss-header {
  min-height: var(--qss-header-height);
  height: auto;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 12px;
  padding: 8px 12px;
  background: var(--qss-shell-header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--qss-shell-divider);
  z-index: var(--qss-z-header);
  overflow: hidden;
}

.qss-header-title {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--qss-shell-text);
  gap: 8px;
  flex: 1 1 200px;
  min-width: 0;
  overflow: hidden;
}

.qss-header-title > span,
.qss-header-title .qss-header-app-name {
  flex: 0 1 auto;
  min-width: 0;
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.qss-brand-lockup {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 1px;
  flex: 0 1 auto;
  min-width: 0;
  line-height: 1.1;
}

.qss-brand-name {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--qss-shell-text);
  white-space: nowrap;
}

.qss-brand-sub {
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #94a3b8;
  white-space: nowrap;
}

html:not(.qss-light-theme) .qss-brand-sub {
  color: #a5b4fc;
}

.qss-app-logo {
  display: block;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 10px;
  object-fit: contain;
  background: transparent;
}

#qss-project-title-input,
.qss-header-title .qss-input--compact,
.qss-header-project .qss-input--compact {
  flex: 1 1 auto;
  width: 100%;
  min-width: 80px;
  max-width: 100%;
  height: 34px;
  margin: 0;
  padding: 6px 10px;
  line-height: 1.25;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 6px;
  align-self: center;
  overflow: hidden;
  text-overflow: ellipsis;
}

.qss-header-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
  flex: 0 1 auto;
  min-width: 0;
}

.qss-output-mode-group {
  display: inline-flex;
  align-items: center;
  padding: 2px;
  border-radius: 8px;
  background: var(--qss-shell-surface-hover);
  border: 1px solid var(--qss-shell-border);
  gap: 2px;
}

.qss-output-mode-btn {
  border: none;
  background: transparent;
  color: var(--qss-shell-muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  line-height: 1.2;
  transition: background 0.15s ease, color 0.15s ease;
}

.qss-output-mode-btn:hover {
  color: var(--qss-shell-text);
  background: rgba(255, 255, 255, 0.06);
}

.qss-output-mode-btn.active {
  color: #fff;
  background: var(--qss-shell-accent);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

.qss-header-actions .qss-select,
.qss-header-actions .qss-lang-select {
  width: auto !important;
}

.qss-save-status {
  font-size: 0.8rem;
  color: var(--qss-shell-muted);
  margin-right: 4px;
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Editor body — flex column (header + format bar + workspace + optional timeline) */
.qss-editor-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* Workspace (3-column container) */
.qss-workspace {
  display: flex;
  flex: 1;
  min-height: 0;
  height: auto;
  overflow: hidden;
  background: var(--qss-shell-workspace-bg);
}

.qss-editor-body > .qss-workspace {
  flex: 1;
  min-height: 0;
}

/* Left Sidebar */
.qss-sidebar {
  width: var(--qss-left-sidebar-width);
  min-width: var(--qss-left-sidebar-width);
  flex-shrink: 0;
  background: var(--qss-shell-panel-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid var(--qss-shell-divider);
  display: flex;
  flex-direction: column;
  z-index: var(--qss-z-panel);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.qss-sidebar.collapsed {
  width: 0 !important;
  min-width: 0 !important;
  border-right: none !important;
  overflow: hidden !important;
}

/* Right Inspector Panel */
.qss-inspector {
  width: var(--qss-right-panel-width);
  min-width: var(--qss-right-panel-width);
  flex-shrink: 0;
  background: var(--qss-shell-panel-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-left: 1px solid var(--qss-shell-divider);
  display: flex;
  flex-direction: column;
  z-index: var(--qss-z-panel);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.qss-inspector.collapsed {
  width: 0 !important;
  min-width: 0 !important;
  border-left: none !important;
  overflow: hidden !important;
}

/* Main Canvas Area with futuristic neon radial gradients */
.qss-canvas-area {
  flex: 1;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  min-height: 0;
  background:
    radial-gradient(circle at top right, var(--qss-shell-canvas-gradient-1), transparent 45%),
    radial-gradient(circle at bottom left, var(--qss-shell-canvas-gradient-2), transparent 45%),
    var(--qss-shell-canvas-bg);
  position: relative;
  overflow: hidden;
}

.qss-canvas-main {
  min-height: 0;
  display: grid;
  grid-template-areas: 'stack';
  grid-template-rows: minmax(0, 1fr);
  overflow: hidden;
  position: relative;
}

.qss-canvas-main > .qss-device-notice-layer,
.qss-canvas-main > .qss-canvas-viewport,
.qss-canvas-main > .qss-editor-mode-layer {
  grid-area: stack;
  min-height: 0;
}

.qss-canvas-viewport.qss-pane-hidden {
  visibility: hidden;
  pointer-events: none;
}

.qss-canvas-toolbar {
  flex-shrink: 0;
  height: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 12px;
  overflow-x: auto;
  overflow-y: hidden;
  flex-wrap: nowrap;
  -webkit-overflow-scrolling: touch;
  background: var(--qss-shell-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--qss-shell-border);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.12);
  z-index: var(--qss-z-panel, 20);
  pointer-events: auto;
}

.qss-canvas-viewport {
  overflow: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 32px;
}

.qss-canvas-viewport.qss-zoom-fit {
  align-items: center;
}

.qss-canvas-viewport.qss-zoom-fit .canvas-stage {
  align-items: center;
  justify-content: center;
  min-height: 100%;
  width: 100%;
}

/* Preview Wrapper inside Viewport (Slide Editor Frame) */
.qss-preview-wrapper {
  box-shadow: 0 24px 60px rgba(0,0,0,0.65), 0 0 1px rgba(255,255,255,0.25);
  border: 4px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: top center;
  /* Fill available width, height driven by aspect-ratio */
  width: 100%;
  max-width: 100%;
  /* Allow scaling down for tall ratios */
}

/* Buttons */
.qss-btn {
  background: var(--qss-shell-surface-hover);
  color: var(--qss-shell-btn-text);
  border: 1px solid var(--qss-shell-border);
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
  font-family: var(--qss-font-ui);
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.qss-btn:hover {
  background: var(--qss-shell-accent);
  border-color: var(--qss-shell-accent);
  color: var(--qss-shell-btn-text-on-accent);
}

.qss-btn--primary {
  background: var(--qss-shell-accent);
  border-color: var(--qss-shell-accent);
  color: var(--qss-shell-btn-text-on-accent);
}
.qss-btn--primary:hover {
  filter: brightness(1.08);
  color: var(--qss-shell-btn-text-on-accent);
}

.qss-btn--icon.qss-btn--ghost {
  background: transparent;
  border: none;
  color: var(--qss-shell-text);
  font-size: 1.25rem;
}

.qss-input--compact {
  background: var(--qss-shell-input-bg);
  color: var(--qss-shell-text);
  border: 1px solid var(--qss-shell-input-border);
}

.qss-lang-select {
  width: auto;
  min-width: 108px;
  padding: 6px 8px;
  font-size: 0.8rem;
  height: 34px;
}

.qss-lang-select--header {
  margin-right: 2px;
}

/* Compact language button + dropdown (no select box) */
.qss-lang-menu {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.qss-lang-menu__btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--qss-shell-muted, #94a3b8);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  padding: 6px 4px;
  min-width: 0;
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
}

.qss-lang-menu__btn:hover,
.qss-lang-menu.is-open .qss-lang-menu__btn {
  color: var(--qss-shell-text, #e2e8f0);
  background: rgba(148, 163, 184, 0.12);
}

.qss-lang-menu__list {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  z-index: 80;
  min-width: 72px;
  padding: 4px;
  border-radius: 8px;
  background: var(--qss-shell-surface, #1e293b);
  border: 1px solid var(--qss-shell-border, #334155);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.qss-lang-menu__list[hidden] {
  display: none !important;
}

.qss-lang-menu__list [data-lang] {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--qss-shell-muted, #94a3b8);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-align: left;
  padding: 7px 10px;
  border-radius: 5px;
  cursor: pointer;
}

.qss-lang-menu__list [data-lang]:hover {
  color: var(--qss-shell-text, #e2e8f0);
  background: rgba(148, 163, 184, 0.12);
}

.qss-lang-menu__list [data-lang].is-active {
  color: #fff;
  background: var(--qss-shell-accent, #6366f1);
}

/* Legacy segmented switch (kept for any remaining mounts) */
.qss-lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 2px;
  border-radius: 6px;
  background: var(--qss-shell-surface-hover);
  border: 1px solid var(--qss-shell-border);
  gap: 1px;
  flex-shrink: 0;
}

.qss-lang-switch-btn {
  border: none;
  background: transparent;
  color: var(--qss-shell-muted);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1;
  padding: 6px 5px;
  min-width: 26px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.qss-lang-switch-btn:hover {
  color: var(--qss-shell-text);
  background: rgba(255, 255, 255, 0.06);
}

.qss-lang-switch-btn.active {
  color: #fff;
  background: var(--qss-shell-accent);
}

.qss-input--fmt-size {
  width: 45px;
  text-align: center;
  padding: 4px;
  background: var(--qss-shell-input-bg);
  border: 1px solid var(--qss-shell-input-border);
  color: var(--qss-shell-text);
}

.qss-toolbar-divider {
  width: 1px;
  background: var(--qss-shell-divider);
  align-self: stretch;
}

.qss-btn--icon {
  width: 32px;
  height: 32px;
  padding: 0;
}

/* Word Formatting Toolbar Styling */
.qss-format-toolbar {
  min-height: 48px;
  flex-wrap: wrap;
  background: var(--qss-shell-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--qss-shell-border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 4px;
  z-index: 10;
  transition: all 0.3s;
}

.qss-toolbar-insert-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.qss-toolbar-format-group {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  opacity: 0.5;
  pointer-events: none;
  transition: opacity 0.2s;
}

.qss-toolbar-group.node-dependent {
  display: flex;
  gap: 4px;
  opacity: 0.5;
  pointer-events: none;
}

.qss-fmt-size-group,
.qss-fmt-style-group,
.qss-fmt-align-group,
.qss-fmt-color-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.qss-fmt-color-label {
  font-size: 0.8rem;
  color: var(--qss-shell-muted);
}

.qss-fmt-color-input {
  width: 28px;
  height: 28px;
  border: 1px solid var(--qss-shell-border);
  border-radius: 4px;
  padding: 0;
  background: transparent;
  cursor: pointer;
}

.qss-slide-actions-toolbar {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--qss-shell-border);
}

.qss-slide-add-btn {
  flex: 1;
  font-size: 0.8rem;
  padding: 6px 10px;
}

.qss-sync-btn {
  width: 100%;
  margin-top: 10px;
}

.qss-toolbar-divider--canvas {
  height: 16px;
  margin: 0 4px;
}

.qss-exit-preview-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10001;
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid var(--qss-shell-border);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  box-shadow: 0 4px 10px var(--qss-shell-shadow);
  pointer-events: auto;
}

.qss-upload-label {
  width: 100%;
  justify-content: center;
  cursor: pointer;
}

.qss-zoom-label {
  font-size: 0.8rem;
  min-width: 40px;
  text-align: center;
  color: var(--qss-shell-muted);
}

.qss-format-toolbar button.active {
  background: var(--qss-shell-accent);
  border-color: var(--qss-shell-accent);
  color: var(--qss-shell-btn-text-on-accent);
}

.qss-color-picker::-webkit-color-swatch-wrapper {
  padding: 0;
}
.qss-color-picker::-webkit-color-swatch {
  border: 1px solid var(--qss-shell-border);
  border-radius: 4px;
}

/* Fullscreen Preview Mode Styling */
.qss-app.qss-preview-active .qss-header,
.qss-app.qss-preview-active .qss-sidebar,
.qss-app.qss-preview-active .qss-inspector,
.qss-app.qss-preview-active .qss-canvas-toolbar,
.qss-app.qss-preview-active .qss-floating-toolbar,
.qss-app.qss-preview-active .qss-format-toolbar {
  display: none !important;
}

.qss-app.qss-preview-active .qss-workspace {
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
}

.qss-app.qss-preview-active .qss-canvas-viewport {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  background: #000000;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qss-app.qss-preview-active .qss-preview-wrapper {
  border: none !important;
  box-shadow: none !important;
  border-radius: 0 !important;
}

/* App shell fullscreen (Fullscreen API on #qss-app-router-root) */
#qss-app-router-root.qss-app-fullscreen,
#qss-app-router-root:fullscreen,
#qss-app-router-root:-webkit-full-screen {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: var(--qss-shell-bg);
  display: flex;
  flex-direction: column;
}

#qss-app-router-root:fullscreen .qss-app,
#qss-app-router-root:fullscreen .qss-dashboard-container,
#qss-app-router-root.qss-app-fullscreen .qss-app,
#qss-app-router-root.qss-app-fullscreen .qss-dashboard-container {
  flex: 1;
  min-height: 0;
  width: 100%;
  height: 100%;
}

#qss-app-router-root:fullscreen .qss-editor-body,
#qss-app-router-root.qss-app-fullscreen .qss-editor-body {
  flex: 1;
  min-height: 0;
}

#btn-app-fullscreen[aria-pressed="true"],
#btn-dash-app-fullscreen[aria-pressed="true"] {
  color: var(--qss-shell-accent);
  background: var(--qss-shell-surface-hover);
}