/* NotebookLM-style + Miro board — 60-30-10 pastel (design.md) */

:root {
  --bg: #E7EEF4;
  --raised: #F7FBFE;
  --canvas: #FFFFFF;
  --surface: #E8F0F8;
  --chip: #D5E4EC;
  --ink: #081E28;
  --text: #10232C;
  --muted: #3E5A68;
  --accent: #4A7C9B;
  --accent-teal: #0B6B5E;
  --line: rgba(24, 48, 62, 0.12);
  --ruling: rgba(8, 30, 40, 0.08);
  --font-display: "Syne", "Bebas Neue", sans-serif;
  --font-body: "Outfit", ui-sans-serif, sans-serif;
  --radius: 18px;
  --radius-sm: 12px;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  color: var(--text);
  font-family: var(--font-body);
  background: var(--bg);
  background-image:
    linear-gradient(180deg, rgba(255,255,255,.55), rgba(231,238,244,.2) 28%, var(--bg)),
    repeating-linear-gradient(0deg, transparent, transparent 27px, var(--ruling) 28px);
}

button {
  background: var(--raised);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.75rem;
  font: inherit;
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  border-color: transparent;
  color: #f7fbfe;
  font-weight: 600;
}

button.icon-btn {
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

button.active, .tab-btn.active {
  box-shadow: inset 0 0 0 1px var(--accent);
  background: var(--chip);
}

button.ghost { background: transparent; }

.hidden { display: none !important; }

.cn-app { min-height: 100dvh; display: flex; flex-direction: column; }

/* Header — NotebookLM */
.cn-nblm-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1.1rem 1.5rem 0.75rem;
  flex-wrap: wrap;
}

.cn-brand {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--ink);
  position: relative;
}

.cn-brand::after {
  content: "";
  position: absolute;
  left: 0;
  right: 15%;
  bottom: -4px;
  height: 3px;
  background: var(--accent-teal);
}

.cn-brand-sm { font-size: 1.35rem; }

.cn-nblm-header h1 {
  margin: 0;
  flex: 1;
  font-size: 1rem;
  font-weight: 500;
  color: var(--muted);
}

.cn-badge {
  font-size: 0.72rem;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 0.35rem 0.65rem;
  border-radius: 10px;
  background: var(--raised);
}

.cn-api-hint { font-size: 0.72rem; color: var(--muted); margin-left: auto; }

.cn-nblm-header .primary { margin-left: auto; }

/* Hub */
.cn-hub-main {
  padding: 0 1.5rem 2rem;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
}

.cn-hub-view .cn-nblm-header {
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
}

.cn-hub-board-section {
  margin-bottom: 1.5rem;
  width: 100%;
}

.cn-hub-board-stage {
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}

.cn-title-input {
  width: 100%;
  max-width: 420px;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin: 0 auto 1.25rem;
  display: block;
  font: inherit;
  background: var(--raised);
}

.cn-section-label {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.65rem;
}

.cn-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.cn-card {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(8, 30, 40, 0.06);
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.cn-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.cn-card h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--ink);
}

.cn-card p { margin: 0; font-size: 0.78rem; color: var(--muted); }

.cn-hint { font-size: 0.8rem; color: var(--muted); }

.cn-hub-board-section { margin-bottom: 1.5rem; }

.cn-hub-board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
}

.cn-hub-board-head .cn-section-label { margin: 0; }

.cn-hub-board-stage {
  position: relative;
  height: min(42vh, 360px);
  min-height: 220px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--canvas);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(8, 30, 40, 0.06);
}

.cn-hub-board-stage #hub-board-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.cn-hub-board-stage .cn-board-objects {
  position: absolute;
  inset: 0;
  pointer-events: none;
  transform-origin: 0 0;
}

.cn-hub-manage-hint {
  font-size: 0.72rem;
  color: var(--muted);
}

.cn-hub-manage-section .cn-card {
  position: relative;
  padding-right: 2.75rem;
}

.cn-card-actions {
  position: absolute;
  top: 0.55rem;
  right: 0.45rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.cn-card-actions .icon-btn {
  width: 1.85rem;
  height: 1.85rem;
  font-size: 0.85rem;
  background: var(--raised);
}

.cn-card-actions .icon-btn:hover {
  border-color: var(--accent);
  background: var(--chip);
}

.cn-card-actions .icon-btn.danger:hover {
  border-color: #a33;
  color: #a33;
}

.cn-modal {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0;
  background: var(--raised);
  color: var(--text);
  box-shadow: 0 16px 40px rgba(8, 30, 40, 0.18);
  max-width: min(420px, 92vw);
}

.cn-modal::backdrop {
  background: rgba(8, 30, 40, 0.35);
}

.cn-modal-body {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.1rem 1.2rem 1.2rem;
  margin: 0;
}

.cn-modal-body h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--ink);
}

.cn-modal-label {
  font-size: 0.75rem;
  color: var(--muted);
}

.cn-modal-body .cn-title-input {
  max-width: none;
  margin-bottom: 0.35rem;
}

.cn-modal-actions {
  display: flex;
  gap: 0.45rem;
  justify-content: flex-end;
  margin-top: 0.35rem;
}

/* 3-column layout — NotebookLM */
.cn-nblm-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 300px;
  gap: 14px;
  padding: 8px 18px 18px;
  height: calc(100dvh - 72px);
  min-height: 0;
}

.cn-panel {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(8, 30, 40, 0.08);
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.cn-sources, .cn-studio { padding: 18px; overflow: auto; }

.cn-sources h2, .cn-studio h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.cn-drop {
  display: block;
  border: 1.5px dashed rgba(74, 124, 155, 0.45);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-bottom: 0.65rem;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.82rem;
}

.cn-drop strong { display: block; color: var(--ink); margin-bottom: 0.25rem; }

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

.cn-sources { position: relative; }

.cn-btn-block { width: 100%; margin-bottom: 0.5rem; }

.cn-src {
  display: flex;
  align-items: flex-start;
  gap: 0.35rem;
  background: var(--chip);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.45rem 0.55rem 0.65rem;
  margin-bottom: 0.45rem;
  font-size: 0.82rem;
  cursor: pointer;
}

.cn-src-check {
  display: flex;
  align-items: center;
  padding-top: 0.2rem;
  cursor: pointer;
}

.cn-src.is-checked {
  border-color: var(--accent-teal);
  background: #eef7f5;
}

.cn-folder-card {
  padding-right: 2.75rem;
  position: relative;
}

.cn-src-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.cn-src-main strong {
  font-weight: 600;
  color: var(--ink);
  word-break: break-word;
}

.cn-src-kind {
  font-size: 0.68rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.cn-src-remove {
  flex-shrink: 0;
  width: 1.85rem;
  height: 1.85rem;
  font-size: 0.8rem;
}

.cn-src-preview-toggle {
  flex-shrink: 0;
  width: 1.85rem;
  height: 1.85rem;
  font-size: 0.85rem;
}

.cn-src-chevron {
  display: inline-flex;
  transition: transform 0.15s ease;
  transform: rotate(-90deg);
}

.cn-src-chevron.is-open {
  transform: rotate(0deg);
}

.cn-src-remove:hover {
  border-color: #a33;
  color: #a33;
}

.cn-src.is-selected { outline: 2px solid var(--accent-teal); }

.cn-source-detail {
  margin-top: 0.75rem;
  font-size: 0.78rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.72);
  overflow: hidden;
}

.cn-source-detail.is-collapsed,
.cn-source-detail[hidden] {
  display: none;
  margin: 0;
  border: 0;
  max-height: 0;
  overflow: hidden;
}

.cn-source-detail.is-open {
  display: block;
  max-height: 30vh;
}

.cn-source-detail-head {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.35rem 0.45rem;
  border-bottom: 1px solid var(--line);
  background: rgba(248, 250, 252, 0.9);
}

.cn-source-detail-toggle {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  border: 0;
  background: transparent;
  padding: 0.25rem 0.35rem;
  text-align: left;
  cursor: pointer;
  color: var(--ink);
  font: inherit;
  min-width: 0;
}

.cn-source-detail-chevron {
  display: inline-flex;
  width: 1.1rem;
  flex-shrink: 0;
  transition: transform 0.15s ease;
}

.cn-source-detail:not(.is-open) .cn-source-detail-chevron {
  transform: rotate(-90deg);
}

.cn-source-detail-title {
  font-weight: 600;
  font-size: 0.78rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cn-source-detail-body {
  max-height: calc(30vh - 2.5rem);
  overflow: auto;
  padding: 0.55rem 0.75rem 0.75rem;
  background: #fff;
}

.cn-source-detail-text,
.cn-source-detail pre {
  white-space: pre-wrap;
  font: inherit;
  margin: 0;
  color: var(--muted);
}

/* Center */
.cn-center {
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.cn-center-tabs {
  display: flex;
  gap: 0.35rem;
  padding: 0.65rem 0.85rem 0;
  border-bottom: 1px solid var(--line);
}

.cn-center-tabs .tab-btn {
  font-size: 0.82rem;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  background: transparent;
}

.cn-center-pane {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.cn-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.5rem 1rem 0;
}

.cn-chips .chip { font-size: 0.78rem; padding: 0.3rem 0.55rem; }

.cn-msgs {
  flex: 1;
  overflow: auto;
  padding: 1.25rem 1.5rem 0.5rem;
}

.cn-empty {
  max-width: 480px;
  margin: 10vh auto 0;
  text-align: center;
}

.cn-empty h2 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin: 0 0 0.5rem;
  text-transform: none;
}

.cn-empty p { margin: 0; color: var(--muted); line-height: 1.55; }

.cn-bubble {
  max-width: 640px;
  margin: 0 auto 0.85rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--line);
  line-height: 1.55;
  font-size: 0.92rem;
}

.cn-bubble.user { background: var(--chip); }
.cn-bubble.assistant { background: #fff; border-color: var(--accent); }

.cn-bubble pre { white-space: pre-wrap; font: inherit; margin: 0; }

/* Studio results as accordion in chat */
.cn-studio-acc {
  max-width: 720px;
  margin: 0 auto 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--raised);
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(8, 30, 40, 0.05);
}

.cn-studio-acc-head {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--chip);
  border-bottom: 1px solid transparent;
  padding: 0.25rem 0.35rem 0.25rem 0.25rem;
}

.cn-studio-acc.is-open .cn-studio-acc-head {
  border-bottom-color: var(--line);
}

.cn-studio-acc-toggle {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  border: 0;
  background: transparent;
  text-align: left;
  padding: 0.45rem 0.5rem;
  cursor: pointer;
  font: inherit;
  color: var(--ink);
  min-width: 0;
}

.cn-studio-acc-chevron {
  display: inline-flex;
  width: 1.1rem;
  transition: transform 0.15s ease;
  color: var(--muted);
}

.cn-studio-acc:not(.is-open) .cn-studio-acc-chevron {
  transform: rotate(-90deg);
}

.cn-studio-acc-title {
  font-weight: 600;
  font-size: 0.88rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cn-studio-acc-actions {
  display: flex;
  gap: 0.15rem;
  flex-shrink: 0;
}

.cn-studio-acc-body {
  padding: 0.85rem 1rem 1rem;
  background: #fff;
}

.cn-studio-acc-text {
  white-space: pre-wrap;
  font: inherit;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--text);
  max-height: 50vh;
  overflow: auto;
}

.cn-cites { margin-top: 0.4rem; display: flex; gap: 0.35rem; flex-wrap: wrap; }

.cn-cites span {
  font-size: 0.68rem;
  background: rgba(11, 107, 94, 0.12);
  padding: 0.15rem 0.45rem;
  border-radius: 8px;
}

.cn-composer { padding: 0.65rem 1rem 1rem; border-top: 1px solid var(--line); }

.cn-composer-box {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.5rem 0.5rem 0.85rem;
}

.cn-composer textarea {
  flex: 1;
  border: 0;
  background: transparent;
  resize: none;
  font: inherit;
  min-height: 2.75rem;
  outline: none;
}

/* Miro board shell */
.cn-board-pane { padding: 0 !important; }

.cn-miro-shell {
  display: flex;
  flex: 1;
  min-height: 0;
  height: 100%;
}

.cn-miro-rail {
  width: 48px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.35rem;
  background: var(--raised);
  border-right: 1px solid var(--line);
}

.cn-miro-tool {
  width: 2.35rem;
  height: 2.35rem;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 1rem;
  background: transparent;
  border: 1px solid transparent;
}

.cn-miro-tool:hover { background: var(--chip); border-color: var(--line); }

.cn-miro-tool.active {
  background: var(--chip);
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.cn-miro-canvas-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.cn-miro-subbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.35rem 0.5rem;
  border-bottom: 1px solid var(--line);
  background: var(--raised);
  flex-wrap: wrap;
}

.cn-sticky-colors {
  display: flex;
  gap: 0.3rem;
}

.cn-sticky-colors.hidden { display: none; }

.cn-color-dot {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  border: 2px solid var(--line);
  padding: 0;
  cursor: pointer;
}

.cn-color-dot.active { border-color: var(--accent); transform: scale(1.1); }

.cn-miro-actions { display: flex; gap: 0.2rem; flex-wrap: wrap; }

.cn-miro-zoom {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.5rem;
  border-top: 1px solid var(--line);
  background: var(--raised);
  font-size: 0.75rem;
  color: var(--muted);
  flex-wrap: wrap;
}

.cn-board-pane .cn-board-stage { flex: 1; min-height: 180px; }

.cn-board-pane #board-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.cn-board-pane .cn-board-objects {
  position: absolute;
  inset: 0;
  pointer-events: none;
  transform-origin: 0 0;
}

.cn-board-pane .cn-board-objects > * { pointer-events: auto; }

/* legacy board toolbar removed */
.cn-board-toolbar { display: none; }
.cn-board-footer { display: none; }

.cn-board-stage {
  flex: 1;
  position: relative;
  min-height: 200px;
  background: var(--canvas);
}

#board-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.cn-board-objects {
  position: absolute;
  inset: 0;
  pointer-events: none;
  transform-origin: 0 0;
}

.cn-board-objects > * { pointer-events: auto; }

.cn-sticky {
  position: absolute;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 14px rgba(8, 30, 40, 0.1);
  border: 1px solid var(--line);
  padding: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.cn-obj-drag {
  flex-shrink: 0;
  height: 1.35rem;
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 30, 40, 0.06);
  color: var(--muted);
  cursor: grab;
  font-size: 0.75rem;
  line-height: 1;
  padding: 0;
  border-radius: 0;
}

.cn-obj-drag:active { cursor: grabbing; }

.cn-sticky.is-selected, .cn-text-note.is-selected { outline: 2px solid var(--accent); }

.cn-sticky textarea, .cn-text-note textarea {
  width: 100%;
  flex: 1;
  min-height: 3rem;
  border: 0;
  background: transparent;
  resize: none;
  font: inherit;
  font-size: 0.85rem;
  outline: none;
  padding: 0.35rem;
  box-sizing: border-box;
}

.cn-text-note {
  position: absolute;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-width: 8rem;
}

.cn-text-note textarea {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.cn-board-footer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.65rem;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  color: var(--muted);
  flex-wrap: wrap;
}

.cn-board-notes-mini { display: flex; gap: 0.35rem; flex-wrap: wrap; margin-left: auto; }

.cn-note-chip {
  font-size: 0.68rem;
  padding: 0.2rem 0.45rem;
  border-radius: 999px;
  background: var(--chip);
}

/* Studio */
.cn-studio-card {
  cursor: pointer;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  margin-bottom: 0.5rem;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.cn-studio-card.is-used {
  opacity: 0.45;
  pointer-events: none;
  position: relative;
}

.cn-studio-card.is-used::after {
  content: "bereits verwendet";
  position: absolute;
  top: 0.45rem;
  right: 0.55rem;
  font-size: 0.65rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}


.cn-studio-card h3 { margin: 0 0 0.2rem; font-size: 0.88rem; font-family: var(--font-display); }

.cn-studio-card p { margin: 0; font-size: 0.75rem; color: var(--muted); }

.cn-mark {
  width: 2rem;
  height: 0.3rem;
  border-radius: 0.2rem;
  background: var(--accent-teal);
  margin-bottom: 0.4rem;
}

.cn-mark.study { background: #2F6B8A; }
.cn-mark.brief { background: #6A8FA8; }
.cn-mark.faq { background: #5A8A6A; }
.cn-mark.map { width: 1rem; height: 1rem; border-radius: 50%; }
.cn-mark.notes { transform: rotate(-6deg); width: 1.4rem; }
.cn-mark.agent {
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 0.25rem;
  background: #1B6B7A;
  transform: rotate(12deg);
}

.cn-modal-hint {
  margin: 0 0 0.85rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.cn-diagram-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}

.cn-diagram-pick {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  text-align: left;
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

.cn-diagram-pick:hover {
  border-color: var(--accent-teal);
}

.cn-diagram-pick strong {
  display: block;
  font-size: 0.88rem;
  font-family: var(--font-display);
}

.cn-diagram-pick span {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.15rem;
}

.cn-studio-out {
  margin-top: 0.75rem;
  font-size: 0.78rem;
  max-height: 35vh;
  overflow: auto;
}

.cn-studio-out pre { white-space: pre-wrap; font: inherit; margin: 0; }

/* Mobile workspace nav — hidden on desktop */
.cn-mobile-nav {
  display: none;
}

.cn-mobile-nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  min-height: 3rem;
  padding: 0.35rem 0.25rem;
  border: none;
  border-radius: 0;
  background: transparent;
  font-size: 1.05rem;
  color: var(--muted);
}

.cn-mobile-nav-btn.active {
  color: var(--ink);
  background: var(--chip);
  box-shadow: inset 0 2px 0 0 var(--accent);
}

.cn-mobile-nav-label {
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 600;
}

@media (max-width: 960px) {
  .cn-hub-view .cn-nblm-header,
  .cn-hub-main {
    max-width: 100%;
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .cn-hub-view .cn-nblm-header {
    flex-wrap: wrap;
    gap: 0.65rem;
    align-items: center;
  }

  .cn-hub-view .cn-brand {
    font-size: 1.55rem;
  }

  .cn-hub-view .cn-nblm-header .primary {
    margin-left: 0;
    width: 100%;
  }

  .cn-title-input {
    max-width: none;
  }

  .cn-hub-board-stage {
    height: min(36vh, 280px);
    min-height: 180px;
  }

  .cn-hub-grid {
    grid-template-columns: 1fr;
  }

  .cn-hub-board-head {
    align-items: flex-start;
  }

  .cn-hub-board-head .primary,
  .cn-hub-manage-hint {
    font-size: 0.78rem;
  }

  .cn-card-actions .icon-btn {
    width: 2.25rem;
    height: 2.25rem;
  }

  /* Workspace: single-panel + bottom nav */
  .cn-workspace-view {
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
    max-height: 100dvh;
    overflow: hidden;
  }

  .cn-workspace-view .cn-nblm-header {
    flex-wrap: nowrap;
    align-items: center;
    gap: 0.45rem;
    padding: 0.65rem 0.75rem;
    flex-shrink: 0;
  }

  .cn-workspace-view .cn-brand-sm {
    font-size: 0.95rem;
  }

  .cn-workspace-view #ws-title {
    font-size: 0.95rem;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin: 0;
  }

  .cn-workspace-view .cn-badge,
  .cn-workspace-view .cn-api-hint {
    display: none;
  }

  .cn-mobile-nav {
    display: flex;
    order: 3;
    position: sticky;
    bottom: 0;
    z-index: 40;
    flex-shrink: 0;
    background: var(--raised);
    border-top: 1px solid var(--line);
    box-shadow: 0 -8px 24px rgba(8, 30, 40, 0.08);
    padding-bottom: env(safe-area-inset-bottom, 0);
  }

  .cn-nblm-layout {
    order: 2;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1fr);
    flex: 1;
    min-height: 0;
    height: auto;
    padding: 8px 10px 10px;
    gap: 0;
    overflow: hidden;
  }

  .cn-nblm-layout > .cn-panel {
    display: none;
    min-height: 0;
    max-height: none;
    height: 100%;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
  }

  .cn-nblm-layout[data-mobile-panel="sources"] > .cn-sources,
  .cn-nblm-layout[data-mobile-panel="chat"] > .cn-center,
  .cn-nblm-layout[data-mobile-panel="board"] > .cn-center,
  .cn-nblm-layout[data-mobile-panel="studio"] > .cn-studio {
    display: flex;
  }

  .cn-nblm-layout[data-mobile-panel="board"] .cn-center-tabs {
    display: none;
  }

  .cn-nblm-layout[data-mobile-panel="chat"] .cn-center-tabs {
    display: none;
  }

  .cn-panel.cn-center {
    padding: 0;
  }

  .cn-center-pane {
    min-height: 0;
    flex: 1;
  }

  .cn-msgs {
    max-height: none;
    flex: 1;
  }

  .cn-composer {
    position: sticky;
    bottom: 0;
    background: var(--raised);
    padding-bottom: 0.35rem;
  }

  .cn-board-pane {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
  }

  .cn-miro-shell {
    flex-direction: column;
    height: 100%;
    min-height: calc(100dvh - 7.5rem);
  }

  .cn-miro-rail {
    width: 100%;
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    gap: 0.2rem;
    padding: 0.35rem 0.4rem;
    border-right: none;
    border-bottom: 1px solid var(--line);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .cn-miro-tool {
    width: 2.35rem;
    height: 2.35rem;
    flex-shrink: 0;
  }

  .cn-miro-subbar {
    gap: 0.35rem;
    padding: 0.3rem 0.4rem;
  }

  .cn-miro-actions {
    flex: 1;
    justify-content: flex-end;
  }

  .cn-miro-zoom {
    gap: 0.25rem;
    padding: 0.3rem 0.4rem;
  }

  .cn-miro-zoom .ghost {
    padding: 0.35rem 0.5rem;
    font-size: 0.75rem;
  }

  .cn-board-pane .cn-board-stage {
    flex: 1;
    min-height: 220px;
  }

  .cn-sources,
  .cn-studio {
    padding: 12px;
  }

  .cn-studio-card {
    padding: 0.75rem;
  }

  .cn-studio-out {
    max-height: none;
  }

  .cn-source-detail:not(.is-collapsed) {
    max-height: min(50vh, 360px);
  }
}

@media (max-width: 560px) {
  .cn-hub-view .cn-brand {
    font-size: 1.35rem;
  }

  .cn-hub-board-stage {
    height: 200px;
    min-height: 160px;
  }

  .cn-modal {
    width: calc(100vw - 1.5rem);
    max-height: calc(100dvh - 2rem);
    overflow: auto;
  }

  .cn-mobile-nav-label {
    font-size: 0.6rem;
  }

  .cn-composer-box {
    flex-wrap: wrap;
  }

  .cn-composer-box .primary {
    width: 100%;
  }

  .cn-miro-shell {
    min-height: calc(100dvh - 8rem);
  }
}