/* Design Studio — modern spacious layout */

.design-page {
  --ds-bg: #06080f;
  --ds-surface: rgba(14, 18, 28, 0.92);
  --ds-surface-2: rgba(20, 26, 40, 0.88);
  --ds-border: rgba(148, 163, 184, 0.12);
  --ds-accent: #6366f1;
  --ds-accent-soft: rgba(99, 102, 241, 0.14);
  --ds-radius: 14px;
  --ds-radius-sm: 10px;
  --ds-gap: 16px;
  --ds-panel-pad: 1.15rem;
  --ds-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
}

.design-shell {
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.18), transparent),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(139, 92, 246, 0.1), transparent),
    var(--ds-bg);
}

.design-shell .portal-topbar,
.design-topbar {
  flex-shrink: 0;
  backdrop-filter: blur(12px);
  background: rgba(6, 8, 15, 0.75);
  border-bottom: 1px solid var(--ds-border);
}

.design-body {
  flex: 1;
  display: flex;
  min-height: 0;
  gap: var(--ds-gap);
  padding: var(--ds-gap);
}

.design-sidebar {
  width: 260px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--ds-surface);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius);
  box-shadow: var(--ds-shadow);
}

.design-sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--ds-border);
}

.design-sidebar-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
}

.design-icon-btn {
  width: 32px;
  height: 32px;
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-sm);
  background: var(--ds-accent-soft);
  color: #c7d2fe;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.design-icon-btn:hover {
  background: rgba(99, 102, 241, 0.28);
  border-color: rgba(99, 102, 241, 0.4);
}

.design-project-list {
  flex: 1;
  overflow: auto;
  padding: 0.65rem;
}

.design-project-empty {
  padding: 1.25rem 1rem;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.55;
}

.design-project-item {
  display: flex;
  align-items: stretch;
  gap: 0.25rem;
  margin-bottom: 0.35rem;
  border-radius: var(--ds-radius-sm);
}

.design-project-item.active {
  background: var(--ds-accent-soft);
}

.design-project-open {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
  padding: 0.75rem 0.85rem;
  border: none;
  border-radius: var(--ds-radius-sm);
  background: transparent;
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.design-project-open:hover {
  background: rgba(255, 255, 255, 0.04);
}

.design-project-title {
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

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

.design-project-delete {
  flex-shrink: 0;
  align-self: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: var(--ds-radius-sm);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  opacity: 0;
}

.design-project-item:hover .design-project-delete,
.design-project-item.active .design-project-delete {
  opacity: 1;
}

.design-project-delete:hover {
  color: #fca5a5;
  background: rgba(239, 68, 68, 0.12);
}

.design-sidebar-toggle {
  display: none;
}

.design-workspace {
  flex: 1;
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr) minmax(280px, 320px);
  gap: var(--ds-gap);
}

.design-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--ds-surface);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius);
  box-shadow: var(--ds-shadow);
  overflow: hidden;
}

.design-panel-head {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 1rem 1.15rem 0.85rem;
  border-bottom: 1px solid var(--ds-border);
  flex-shrink: 0;
}

.design-panel-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.design-panel-sub {
  font-size: 0.78rem;
  color: var(--muted);
}

.design-chat-messages {
  flex: 1;
  overflow: auto;
  padding: 1rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.design-msg {
  padding: 0.75rem 0.95rem;
  border-radius: var(--ds-radius-sm);
  font-size: 0.875rem;
  line-height: 1.55;
  max-width: 100%;
}

.design-msg.user {
  align-self: flex-end;
  max-width: 92%;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.35), rgba(79, 70, 229, 0.25));
  color: #eef2ff;
  border: 1px solid rgba(129, 140, 248, 0.25);
}

.design-msg.assistant {
  align-self: flex-start;
  background: var(--ds-surface-2);
  color: var(--text);
  border: 1px solid var(--ds-border);
}

.design-msg.design-msg--progress {
  padding: 1rem 1.05rem;
}

.design-chat-compose {
  flex-shrink: 0;
  padding: 0 1.15rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.design-prompt-card {
  background: var(--ds-surface-2);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-sm);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.design-chat-compose textarea {
  width: 100%;
  min-height: 72px;
  max-height: 160px;
  resize: vertical;
  border: none;
  border-radius: var(--ds-radius-sm);
  background: rgba(0, 0, 0, 0.22);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  line-height: 1.5;
  padding: 0.75rem 0.85rem;
  box-sizing: border-box;
}

.design-chat-compose textarea:focus {
  outline: 2px solid rgba(99, 102, 241, 0.45);
}

.design-chat-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
}

.design-chat-foot-left,
.design-chat-foot-right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.design-chat-foot-right {
  margin-left: auto;
}

.design-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.design-action-chip {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--ds-border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
}

.design-action-chip:hover {
  color: #fff;
  border-color: rgba(129, 140, 248, 0.45);
  background: var(--ds-accent-soft);
}

.design-model-select {
  min-width: 140px;
  padding: 0.5rem 0.65rem;
  border-radius: var(--ds-radius-sm);
  border: 1px solid var(--ds-border);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
  font-size: 0.8rem;
}

.design-inspiration-toggle {
  font-size: 0.78rem;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.design-canvas-panel {
  min-width: 0;
}

.design-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--ds-border);
  flex-wrap: wrap;
  flex-shrink: 0;
  background: rgba(0, 0, 0, 0.15);
}

.design-toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.design-toolbar-group--center {
  flex: 1;
  justify-content: center;
  min-width: 120px;
}

.design-toolbar-group--actions {
  justify-content: flex-end;
}

.design-page-tabs {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  max-width: 280px;
}

.design-page-tab {
  padding: 0.45rem 0.85rem;
  border-radius: var(--ds-radius-sm);
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}

.design-page-tab.active {
  color: #fff;
  background: var(--ds-accent-soft);
  border-color: rgba(99, 102, 241, 0.35);
}

.design-canvas-wrap {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  padding: 1.25rem;
  background:
    radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.035) 1px, transparent 0) 0 0 / 24px 24px,
    rgba(8, 12, 22, 0.6);
}

.design-canvas-frame {
  width: 100%;
  height: 100%;
  margin: 0;
  border-radius: var(--ds-radius-sm);
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 32px 80px rgba(0, 0, 0, 0.55);
  min-height: 420px;
  background: #fff;
}

.design-canvas-frame.design-canvas-frame--html #designCanvas {
  height: 100%;
  width: 100%;
}

.ds-html-frame--full {
  width: 100%;
  height: 100%;
  min-height: 520px;
  border: 0;
  display: block;
  background: #fff;
}

.design-selection-badge {
  font-size: 0.75rem;
  color: #c7d2fe;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: var(--ds-accent-soft);
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.design-canvas-mode {
  display: inline-flex;
  gap: 3px;
  padding: 4px;
  border-radius: var(--ds-radius-sm);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--ds-border);
}

.design-mode-btn {
  padding: 0.4rem 0.75rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
}

.design-mode-btn.active {
  color: #fff;
  background: var(--ds-accent);
}

.design-export-select {
  font-size: 0.78rem;
  padding: 0.4rem 0.55rem;
  border-radius: var(--ds-radius-sm);
  border: 1px solid var(--ds-border);
  background: rgba(0, 0, 0, 0.25);
  color: inherit;
}

.design-inspector-tabs {
  display: flex;
  gap: 0.35rem;
  padding: 0.85rem 1rem 0;
  border-bottom: 1px solid var(--ds-border);
}

.design-inspector-tab {
  flex: 1;
  padding: 0.55rem 0.75rem;
  border: none;
  border-radius: var(--ds-radius-sm) var(--ds-radius-sm) 0 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.design-inspector-tab.active {
  color: #e0e7ff;
  background: var(--ds-surface-2);
  box-shadow: inset 0 -2px 0 var(--ds-accent);
}

.design-inspector-pane {
  flex: 1;
  min-height: 0;
  overflow: auto;
  display: none;
}

.design-inspector-pane.active {
  display: flex;
  flex-direction: column;
}

.design-files-body,
.design-props-body {
  flex: 1;
  padding: var(--ds-panel-pad);
  font-size: 0.875rem;
  overflow: auto;
}

.design-progress {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
  max-width: 420px;
  padding: 0.5rem 0.75rem;
  border-radius: var(--ds-radius-sm);
  background: var(--ds-accent-soft);
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.design-progress.hidden { display: none; }

.design-progress-toolbar-label {
  font-size: 0.78rem;
  color: #e0e7ff;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.design-progress-card { display: flex; flex-direction: column; gap: 0.65rem; }
.design-progress-steps { display: flex; flex-wrap: wrap; gap: 0.35rem; font-size: 0.75rem; }
.design-progress-step { padding: 0.2rem 0.55rem; border-radius: 999px; border: 1px solid var(--ds-border); color: var(--muted); }
.design-progress-step--done { color: #a5b4fc; background: var(--ds-accent-soft); }
.design-progress-step--active { color: #fff; background: rgba(99, 102, 241, 0.35); }
.design-progress-step-sep { color: rgba(255, 255, 255, 0.2); font-size: 0.7rem; }
.design-progress-headline { font-size: 0.875rem; font-weight: 500; color: #f8fafc; display: flex; align-items: center; gap: 0.5rem; }
.design-progress-pulse { width: 8px; height: 8px; border-radius: 50%; background: #818cf8; animation: design-progress-pulse 1.2s ease-in-out infinite; }
@keyframes design-progress-pulse { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }
.design-progress-bar { height: 6px; border-radius: 999px; background: rgba(255, 255, 255, 0.08); overflow: hidden; }
.design-progress-bar--toolbar { flex: 1; min-width: 80px; }
.design-progress-bar-fill { height: 100%; background: linear-gradient(90deg, #6366f1, #818cf8); transition: width 0.25s ease; }
.design-progress-details { list-style: none; margin: 0; padding: 0; font-size: 0.78rem; color: var(--muted); }

.design-stream-sections { list-style: none; margin: 0.65rem 0 0; padding: 0; display: flex; flex-direction: column; gap: 0.4rem; }
.design-stream-section { display: flex; justify-content: space-between; padding: 0.45rem 0.65rem; border-radius: var(--ds-radius-sm); background: rgba(15, 23, 42, 0.4); border: 1px solid var(--ds-border); font-size: 0.84rem; }
.design-stream-section--done { color: #86efac; }
.design-stream-section--active { color: #e0e7ff; background: var(--ds-accent-soft); }
.design-stream-section--pending { color: var(--muted); opacity: 0.7; }

.design-files-section { margin-top: 1.25rem; }
.design-files-section:first-child { margin-top: 0; }
.design-files-section-title { font-size: 0.7rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.55rem; }
.design-tree-list { display: flex; flex-direction: column; gap: 0.25rem; }
.design-tree-item { display: flex; align-items: center; gap: 0.45rem; width: 100%; padding: 0.55rem 0.65rem; border-radius: var(--ds-radius-sm); border: 1px solid transparent; background: transparent; color: var(--muted); font: inherit; font-size: 0.84rem; cursor: pointer; text-align: left; }
.design-tree-item.active { background: var(--ds-accent-soft); color: #e0e7ff; border-color: rgba(99, 102, 241, 0.35); }
.design-tree-item--nested { padding-left: 0.85rem; }
.design-tree-item--child { padding-left: 1.35rem; font-size: 0.8rem; }

.design-token-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.65rem; margin-bottom: 1.25rem; padding-bottom: 1.25rem; border-bottom: 1px solid var(--ds-border); }
.design-token-value { font-size: 0.8rem; color: var(--muted); }
.design-history-item { width: 100%; padding: 0.65rem 0.75rem; margin-top: 0.35rem; border-radius: var(--ds-radius-sm); border: 1px solid var(--ds-border); background: rgba(255, 255, 255, 0.02); font: inherit; font-size: 0.8rem; text-align: left; cursor: pointer; }
.design-history-label { font-weight: 500; color: #e2e8f0; }
.design-history-meta { font-size: 0.72rem; color: var(--muted); }
.design-changelog-item { font-size: 0.78rem; color: var(--muted); margin: 0.35rem 0; padding: 0.5rem 0.65rem; border-radius: var(--ds-radius-sm); background: rgba(255, 255, 255, 0.03); }

.design-prop-field { margin-bottom: 1rem; }
.design-prop-head { font-size: 0.85rem; font-weight: 600; color: #c7d2fe; margin-bottom: 0.65rem; padding-bottom: 0.5rem; border-bottom: 1px solid rgba(99, 102, 241, 0.2); }
.design-prop-field label, .design-comment-box .field-label { display: block; font-size: 0.75rem; color: var(--dim); margin-bottom: 0.35rem; }
.design-prop-field input, .design-prop-field textarea, .design-comment-box textarea { width: 100%; box-sizing: border-box; padding: 0.55rem 0.7rem; border-radius: var(--ds-radius-sm); border: 1px solid var(--ds-border); background: rgba(0, 0, 0, 0.28); color: var(--text); font: inherit; font-size: 0.875rem; }
.design-comment-box { margin-top: 1.25rem; padding-top: 1.25rem; border-top: 1px solid var(--ds-border); }
.design-props-empty { font-size: 0.875rem; color: var(--muted); line-height: 1.6; }

.design-memory-panel { margin-bottom: 1.25rem; padding-bottom: 1rem; border-bottom: 1px solid var(--ds-border); }
.design-memory-chain { font-size: 0.8rem; color: #c7d2fe; padding: 0.65rem 0.75rem; border-radius: var(--ds-radius-sm); background: var(--ds-accent-soft); border: 1px solid rgba(99, 102, 241, 0.25); line-height: 1.5; }
.design-recommend-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.design-recommend-chip { font-size: 0.75rem; padding: 0.35rem 0.65rem; border-radius: 999px; border: 1px solid var(--ds-border); color: var(--muted); }
.design-recommend-chip--theme { color: #a5b4fc; background: var(--ds-accent-soft); }
.design-live-diff { margin: 0.85rem 0; padding: 0.65rem; border-radius: var(--ds-radius-sm); background: rgba(15, 23, 42, 0.5); border: 1px solid var(--ds-border); }
.design-live-diff-head { font-size: 0.75rem; font-weight: 600; color: var(--muted); margin-bottom: 0.45rem; }
.design-live-diff-list { list-style: none; margin: 0; padding: 0; }
.design-live-diff-item--add { color: #86efac; }
.design-live-diff-item--remove { color: #fca5a5; }
.design-live-diff-item--change { color: #fde68a; }
.design-wizard-options { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.design-wizard-opt { padding: 0.4rem 0.7rem; border-radius: var(--ds-radius-sm); border: 1px solid var(--ds-border); background: transparent; color: var(--muted); font: inherit; font-size: 0.78rem; cursor: pointer; }
.design-wizard-opt.active { color: #e0e7ff; background: var(--ds-accent-soft); }

.design-recommend-bar,
.design-wizard-bar {
  padding: 0.65rem 0.75rem;
  border-radius: var(--ds-radius-sm);
  background: var(--ds-surface-2);
  border: 1px solid var(--ds-border);
}

.design-wizard-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.55rem;
}

.design-recommend-panel {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.studio-empty {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.55;
}

.design-connect-card {
  max-width: 420px;
}

.design-canvas-frame.design-canvas-frame--select-mode .ds-html-frame--full { cursor: crosshair; }
#designCanvas .ds-page { min-height: 360px; background: #fff; color: #111; }
.ds-block { position: relative; cursor: pointer; }
.ds-selected { outline: 2px solid #818cf8 !important; outline-offset: 2px; }

@media (max-width: 1200px) {
  .design-workspace {
    grid-template-columns: minmax(280px, 320px) minmax(0, 1fr);
    grid-template-rows: 1fr auto;
  }
  .design-inspector { grid-column: 1 / -1; max-height: 300px; }
}

@media (max-width: 960px) {
  .design-body { flex-direction: column; padding: 0.75rem; }
  .design-sidebar-toggle { display: inline-flex; }
  .design-sidebar {
    position: fixed;
    left: 0.75rem;
    top: 56px;
    bottom: 0.75rem;
    z-index: 40;
    transform: translateX(calc(-100% - 1rem));
    transition: transform 0.25s ease;
  }
  .design-sidebar.open { transform: translateX(0); }
  .design-mobile-tabs {
    display: flex;
    gap: 0.35rem;
    padding: 0.35rem;
    margin-bottom: 0.5rem;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.22);
    border: 1px solid rgba(148, 163, 184, 0.12);
  }
  .design-mobile-tab {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--muted, #94a3b8);
    padding: 0.45rem 0.5rem;
    border-radius: 8px;
    font: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
  }
  .design-mobile-tab.active {
    background: rgba(99, 102, 241, 0.22);
    color: #fff;
  }
  .design-workspace {
    display: flex;
    flex-direction: column;
    min-height: 0;
  }
  .design-panel[data-design-panel] {
    display: none;
    min-height: 0;
    flex: 1;
  }
  .design-panel[data-design-panel].design-mobile-active {
    display: flex;
    flex-direction: column;
    min-height: 52vh;
  }
  .design-inspector { max-height: none; }
}

.design-mobile-tabs {
  display: none;
}

.design-starter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.5rem;
}

.design-starter-chip {
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(99, 102, 241, 0.1);
  color: #c4b5fd;
  border-radius: 999px;
  padding: 0.25rem 0.6rem;
  font-size: 0.72rem;
  cursor: pointer;
}