/* ─── Reset & Base ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Light mode tokens */
  --bg:           #f8f8f6;
  --bg-panel:     #ffffff;
  --bg-subtle:    #f2f2ef;
  --bg-hover:     #eaeae6;
  --border:       #e4e4e0;
  --border-focus: #1a1a1a;
  --text-primary: #1a1a1a;
  --text-secondary:#6b6b6b;
  --text-tertiary: #9d9d9d;
  --accent:       #1a1a1a;
  --accent-text:  #ffffff;
  --btn-disabled: #d4d4d0;
  --btn-dis-text: #9d9d9d;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:    0 4px 16px rgba(0,0,0,.08), 0 1px 4px rgba(0,0,0,.04);
  --shadow-xl:    0 20px 60px rgba(0,0,0,.12), 0 4px 16px rgba(0,0,0,.06);
  --radius-sm:    6px;
  --radius-md:    10px;
  --radius-lg:    14px;
  --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif:   'Playfair Display', Georgia, serif;
  --transition:   .18s cubic-bezier(.4,0,.2,1);

  /* A4 dimensions at 96dpi: 794×1123px */
  --a4-w: 794px;
  --a4-h: 1123px;
}

[data-theme="dark"] {
  --bg:           #111111;
  --bg-panel:     #191919;
  --bg-subtle:    #222222;
  --bg-hover:     #2a2a2a;
  --border:       #2e2e2e;
  --border-focus: #e8e8e4;
  --text-primary: #e8e8e4;
  --text-secondary:#888888;
  --text-tertiary: #555555;
  --accent:       #e8e8e4;
  --accent-text:  #111111;
  --btn-disabled: #2a2a2a;
  --btn-dis-text: #555555;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.3);
  --shadow-md:    0 4px 16px rgba(0,0,0,.4);
  --shadow-xl:    0 20px 60px rgba(0,0,0,.6), 0 4px 16px rgba(0,0,0,.3);
}

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-primary);
  transition: color var(--transition);
  -webkit-font-smoothing: antialiased;
}

/* ── Background Image ────────────────────────────────────────────── */
#bgLayer {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

[data-theme="light"] #bgLayer::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
}

[data-theme="dark"] #bgLayer::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.2);
}

#authOverlay, #mainApp {
  position: relative;
  z-index: 1;
}

/* ─── Header ────────────────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 52px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 28px;
  transition: background var(--transition), border-color var(--transition);
}

.header-inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.logo-dot {
  color: var(--text-secondary);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.theme-toggle:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
}

.toggle-icon { display: flex; align-items: center; }

/* Show/hide sun/moon based on theme */
[data-theme="light"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun  { display: none; }

/* ─── Main Layout ───────────────────────────────────────────────── */
.main {
  display: flex;
  height: calc(100vh - 52px);
  overflow: hidden;
}

.panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-input {
  width: 360px;
  min-width: 320px;
  flex-shrink: 0;
  padding: 28px 24px;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--bg-panel);
  transition: background var(--transition), border-color var(--transition);
  gap: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.panel-input::-webkit-scrollbar { width: 4px; }
.panel-input::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.panel-divider {
  display: none; /* hidden — border on panel-input serves as divider */
}

.panel-preview {
  flex: 1;
  min-width: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  transition: background var(--transition);
}

/* ─── Section Labels ────────────────────────────────────────────── */
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 10px;
}

/* ─── Upload Area ───────────────────────────────────────────────── */
.upload-area {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  position: relative;
}

.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--border-focus);
  background: var(--bg-subtle);
}

.upload-area.drag-over {
  background: var(--bg-hover);
}

.upload-icon {
  display: flex;
  justify-content: center;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.upload-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.upload-sub {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.link-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  padding: 0;
}

.upload-formats {
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: .04em;
}

/* File info state */
.upload-file-info {
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
  cursor: default;
}

.file-icon {
  flex-shrink: 0;
  color: var(--text-secondary);
}

.file-meta {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.file-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-size {
  font-size: 11px;
  color: var(--text-tertiary);
}

.remove-file {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  transition: color var(--transition), background var(--transition);
}

.remove-file:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

/* ─── Command Input ─────────────────────────────────────────────── */
.command-wrapper {
  position: relative;
}

.command-input {
  width: 100%;
  background: var(--bg-subtle);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-primary);
  resize: vertical;
  min-height: 100px;
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}

.command-input::placeholder { color: var(--text-tertiary); }

.command-input:focus {
  border-color: var(--border-focus);
  background: var(--bg-panel);
}

/* ─── API Section ───────────────────────────────────────────────── */
.api-section {
  margin-top: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition);
}

.api-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 14px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  list-style: none;
  user-select: none;
  transition: color var(--transition), background var(--transition);
}

.api-summary:hover { color: var(--text-primary); background: var(--bg-subtle); }
.api-summary::-webkit-details-marker { display: none; }

.api-section[open] .chevron { transform: rotate(180deg); }
.chevron { transition: transform var(--transition); }

.api-body {
  padding: 14px;
  border-top: 1px solid var(--border);
  background: var(--bg-subtle);
}

.api-hint {
  font-size: 12px;
  color: var(--text-tertiary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.api-input-row {
  display: flex;
  gap: 8px;
}

.api-key-input {
  flex: 1;
  background: var(--bg-panel);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 12px;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition);
}

.api-key-input:focus { border-color: var(--border-focus); }

.btn-save-key {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: opacity var(--transition);
}

.btn-save-key:hover { opacity: .85; }

.api-status {
  display: block;
  font-size: 11.5px;
  margin-top: 8px;
  color: var(--text-tertiary);
}

.api-status.ok  { color: #22883e; }
.api-status.err { color: #cc3a2f; }

/* ─── Transform Button ──────────────────────────────────────────── */
.btn-transform {
  margin-top: 24px;
  width: 100%;
  padding: 13px;
  border-radius: var(--radius-md);
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: opacity var(--transition), background var(--transition);
  letter-spacing: .01em;
}

.btn-transform:disabled {
  background: var(--btn-disabled);
  color: var(--btn-dis-text);
  cursor: not-allowed;
}

.btn-transform:not(:disabled):hover { opacity: .85; }

.btn-spinner { display: flex; align-items: center; }

@keyframes spin {
  to { transform: rotate(360deg); }
}
.spin { animation: spin .8s linear infinite; }

.status-msg {
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--text-secondary);
  text-align: center;
  min-height: 18px;
  line-height: 1.5;
}

.status-msg.error { color: #cc3a2f; }
.status-msg.success { color: #22883e; }

/* ─── Preview Panel ─────────────────────────────────────────────── */
.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 0;
  flex-shrink: 0;
}


/* ─── A4 Viewport ───────────────────────────────────────────────── */
.a4-viewport {
  flex: 1;
  overflow: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.a4-viewport::-webkit-scrollbar { width: 6px; }
.a4-viewport::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.a4-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  color: var(--text-tertiary);
  font-size: 13.5px;
  line-height: 1.7;
  text-align: center;
  height: 100%;
  max-width: 260px;
}

.a4-pages-wrap {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
  width: 100%;
}

/* ─── A4 Page ───────────────────────────────────────────────────── */
.a4-page {
  width: var(--a4-w);
  min-height: var(--a4-h);
  flex-shrink: 0;
  padding: 80px 88px;
  border-radius: 2px;
  box-shadow: var(--shadow-xl);
  font-family: var(--font-sans);
  font-size: 10.5pt;
  line-height: 1.75;
  position: relative;
  overflow: hidden;
  transition: background var(--transition), color var(--transition);
}

/* White document */
.a4-page.doc-white {
  background: #ffffff;
  color: #1a1a1a;
}

/* Dark document */
.a4-page.doc-dark {
  background: #1a1a1a;
  color: #e8e8e4;
}

.a4-page.doc-dark .doc-h1,
.a4-page.doc-dark .doc-h2,
.a4-page.doc-dark .doc-h3 { color: #f0f0ec; }

.a4-page.doc-dark hr { border-color: #333333; }
.a4-page.doc-dark .doc-hr { border-color: #333333; }

/* ─── Document Typography ───────────────────────────────────────── */
.doc-title-block {
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid currentColor;
  opacity: 1;
}

.a4-page.doc-dark .doc-title-block { border-color: #333333; }
.a4-page.doc-white .doc-title-block { border-color: #e4e4e0; }

.doc-title {
  font-family: var(--font-serif);
  font-size: 28pt;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.a4-page.doc-white .doc-title { color: #111111; }
.a4-page.doc-dark  .doc-title { color: #f4f4f0; }

.doc-subtitle {
  font-size: 11pt;
  color: #888888;
  margin-top: 6px;
  font-weight: 400;
}

.doc-h1 {
  font-family: var(--font-serif);
  font-size: 18pt;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-top: 36px;
  margin-bottom: 12px;
}

.a4-page.doc-white .doc-h1 { color: #111111; }
.a4-page.doc-dark  .doc-h1 { color: #f0f0ec; }

.doc-h2 {
  font-family: var(--font-sans);
  font-size: 13pt;
  font-weight: 600;
  line-height: 1.4;
  margin-top: 28px;
  margin-bottom: 8px;
  letter-spacing: .005em;
}

.a4-page.doc-white .doc-h2 { color: #222222; }
.a4-page.doc-dark  .doc-h2 { color: #e8e8e4; }

.doc-h3 {
  font-family: var(--font-sans);
  font-size: 11pt;
  font-weight: 600;
  line-height: 1.5;
  margin-top: 20px;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.a4-page.doc-white .doc-h3 { color: #555555; }
.a4-page.doc-dark  .doc-h3 { color: #888888; }

.doc-p {
  font-size: 10.5pt;
  line-height: 1.8;
  margin-bottom: 14px;
  font-weight: 400;
}

.a4-page.doc-white .doc-p { color: #2a2a2a; }
.a4-page.doc-dark  .doc-p { color: #c8c8c4; }

.doc-ul, .doc-ol {
  margin-bottom: 14px;
  padding-left: 22px;
}

.doc-ul li, .doc-ol li {
  font-size: 10.5pt;
  line-height: 1.8;
  margin-bottom: 4px;
}

.a4-page.doc-white .doc-ul li,
.a4-page.doc-white .doc-ol li { color: #2a2a2a; }

.a4-page.doc-dark .doc-ul li,
.a4-page.doc-dark .doc-ol li { color: #c8c8c4; }

.doc-hr {
  border: none;
  border-top: 1px solid;
  margin: 28px 0;
}

.a4-page.doc-white .doc-hr { border-color: #e4e4e0; }
.a4-page.doc-dark  .doc-hr { border-color: #333333; }

.doc-blockquote {
  border-left: 3px solid;
  padding: 6px 16px;
  margin: 16px 0;
  font-style: italic;
}

.a4-page.doc-white .doc-blockquote {
  border-color: #c8c8c4;
  color: #555555;
}

.a4-page.doc-dark .doc-blockquote {
  border-color: #444444;
  color: #888888;
}

.doc-code {
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 9pt;
  padding: 12px 16px;
  border-radius: 4px;
  margin: 14px 0;
  white-space: pre-wrap;
  word-break: break-all;
}

.a4-page.doc-white .doc-code {
  background: #f4f4f2;
  color: #333333;
}

.a4-page.doc-dark .doc-code {
  background: #252525;
  color: #c8c8c4;
}

/* Page number */
.doc-page-num {
  position: absolute;
  bottom: 36px;
  right: 88px;
  font-size: 9pt;
  color: #888888;
  font-family: var(--font-sans);
}

/* ─── Export Bar ────────────────────────────────────────────────── */
.export-bar {
  border-top: 1px solid var(--border);
  background: var(--bg-panel);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-shrink: 0;
  transition: background var(--transition), border-color var(--transition);
}

.export-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  white-space: nowrap;
}

.export-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.export-format-group {
  display: flex;
  gap: 6px;
}

.btn-export {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.btn-export:hover {
  background: var(--bg-hover);
  border-color: var(--border-focus);
}

.btn-export:disabled {
  opacity: .45;
  cursor: not-allowed;
}

/* ─── SVG diagram blocks ────────────────────────────────────────── */
.doc-svg-wrap {
  margin: 20px 0;
  text-align: center;
}

.doc-svg {
  display: block;
  width: 100%;
  max-width: 380px;
  margin: 0 auto;
}

.doc-svg svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* SVG uses currentColor — set it per document mode */
.a4-page.doc-white .doc-svg { color: #1a1a1a; }
.a4-page.doc-dark  .doc-svg { color: #e8e8e4; }

/* ─── Image blocks ──────────────────────────────────────────────── */
.doc-image-wrap {
  margin: 18px 0;
  text-align: center;
}

.doc-image {
  max-width: 100%;
  height: auto;
  display: inline-block;
  border-radius: 3px;
}

.doc-image-caption {
  font-size: 9pt;
  margin-top: 6px;
}

.a4-page.doc-white .doc-image-caption { color: #888888; }
.a4-page.doc-dark  .doc-image-caption { color: #666666; }

/* ─── Scrollbar for a4-viewport ─────────────────────────────────── */
.a4-viewport::-webkit-scrollbar-track {
  background: transparent;
}

/* ─── Responsive ────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .main {
    flex-direction: column;
    height: auto;
    min-height: calc(100vh - 52px);
    overflow: visible;
  }
  .panel-input {
    width: 100%;
    min-width: unset;
    border-right: none;
    border-bottom: 1px solid var(--border);
    overflow-y: visible;
  }
  .panel-preview {
    min-height: 700px;
  }
  .a4-page {
    width: min(var(--a4-w), calc(100vw - 48px));
    padding: 40px 44px;
  }
  .export-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ─── No-key notice ─────────────────────────────────────────────── */
.no-key-notice {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  background: var(--accent-subtle, rgba(99,102,241,0.08));
  border: 1px solid var(--accent-muted, rgba(99,102,241,0.22));
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.no-key-notice svg {
  flex-shrink: 0;
  margin-top: 1px;
  color: var(--accent, #6366f1);
}

.no-key-notice strong {
  color: var(--text-primary);
  font-weight: 600;
}

.no-key-notice.hidden { display: none; }

/* ─── Pipeline log ──────────────────────────────────────────────── */
.pipeline-log {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 10px;
  font-size: 12px;
}

.pipeline-log:empty { display: none; }

.pipeline-step {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 0;
  color: var(--text-secondary);
  animation: stepFadeIn 0.2s ease;
}

@keyframes stepFadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.pipeline-step .step-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pipeline-step.step-done { color: var(--text-secondary); }
.pipeline-step.step-done .step-icon { color: #22c55e; }
.pipeline-step.step-active { color: var(--text-primary); font-weight: 500; }
.pipeline-step.step-active .step-icon { animation: spin 1s linear infinite; }
.pipeline-step.step-error { color: #ef4444; }
.pipeline-step.step-error .step-icon { color: #ef4444; }

/* ─── CSS custom properties additions ──────────────────────────── */
:root {
  --accent: #6366f1;
  --accent-subtle: rgba(99,102,241,0.07);
  --accent-muted:  rgba(99,102,241,0.22);
}
[data-theme="dark"] {
  --accent: #818cf8;
  --accent-subtle: rgba(129,140,248,0.10);
  --accent-muted:  rgba(129,140,248,0.25);
}

/* ─── Utility ───────────────────────────────────────────────────── */
[hidden] { display: none !important; }

/* ── Pricing Button im Header ─────────────────────────────────── */
.btn-pricing {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, transform 0.1s;
}

.btn-pricing:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.btn-pricing {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, transform 0.1s;
}

.btn-pricing:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
  transform: translateY(-1px);
}

/* ── Privacy Notice Banner ───────────────────────────────────────── */
.privacy-notice {
  margin-top: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.privacy-notice-content {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--text-secondary);
}

.privacy-notice-link {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.privacy-notice-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.privacy-notice-check {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.privacy-notice-check input {
  cursor: pointer;
  accent-color: var(--text-primary);
}

.privacy-notice-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color 0.15s;
  font-family: inherit;
}
.privacy-notice-close:hover { color: var(--text-primary); }

/* ── Footer ──────────────────────────────────────────────────────── */
.app-footer {
  text-align: center;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.footer-link {
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.footer-link:hover { color: var(--text-primary); }

.footer-sep {
  font-size: 12px;
  color: var(--border);
}

/* ── Header Controls ─────────────────────────────────────────────── */
.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px 4px 4px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: border-color 0.15s;
}
.user-info:hover { border-color: var(--text-muted); }

.user-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-primary);
  overflow: hidden;
  flex-shrink: 0;
}

.username {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-signout {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 2px;
  display: flex;
  align-items: center;
  border-radius: 4px;
  transition: color 0.15s;
  margin-left: 2px;
}
.btn-signout:hover { color: var(--text-primary); }
/* ═══════════════════════════════════════════════════════════════
   GLASSMORPHISM OVERRIDES
   ═══════════════════════════════════════════════════════════════ */

/* ── App Layout: Fullscreen mit Scroll ───────────────────────────── */
#mainApp {
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#mainApp .main {
  flex: 1;
  overflow: hidden;
}

/* ── Header Glass ────────────────────────────────────────────────── */
.header {
  background: rgba(255,255,255,0.55) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border-bottom: 1px solid rgba(255,255,255,0.4) !important;
}
[data-theme="dark"] .header {
  background: rgba(10,10,10,0.55) !important;
  border-bottom: 1px solid rgba(255,255,255,0.07) !important;
}

/* ── Footer Glass ────────────────────────────────────────────────── */
.app-footer {
  background: rgba(255,255,255,0.55) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border-top: 1px solid rgba(255,255,255,0.4) !important;
}
[data-theme="dark"] .app-footer {
  background: rgba(10,10,10,0.55) !important;
  border-top: 1px solid rgba(255,255,255,0.07) !important;
}

/* ── Left Panel Glass ────────────────────────────────────────────── */
.panel-input {
  background: rgba(255,255,255,0.55) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border-right: 1px solid rgba(255,255,255,0.4) !important;
}
[data-theme="dark"] .panel-input {
  background: rgba(10,10,10,0.55) !important;
  border-right: 1px solid rgba(255,255,255,0.07) !important;
}

/* ── Right Panel Glass ───────────────────────────────────────────── */
.panel-preview {
  background: rgba(255,255,255,0.35) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
}
[data-theme="dark"] .panel-preview {
  background: rgba(10,10,10,0.35) !important;
}

/* ── Export Bar Glass ────────────────────────────────────────────── */
.export-bar {
  background: rgba(255,255,255,0.55) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border-top: 1px solid rgba(255,255,255,0.4) !important;
}
[data-theme="dark"] .export-bar {
  background: rgba(10,10,10,0.55) !important;
  border-top: 1px solid rgba(255,255,255,0.07) !important;
}

/* ── Auth Card Glass ─────────────────────────────────────────────── */
.auth-overlay {
  background: transparent !important;
}

.auth-card {
  background: rgba(255,255,255,0.6) !important;
  backdrop-filter: blur(24px) !important;
  -webkit-backdrop-filter: blur(24px) !important;
  border: 1px solid rgba(255,255,255,0.5) !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12) !important;
}
[data-theme="dark"] .auth-card {
  background: rgba(15,15,15,0.65) !important;
  border: 1px solid rgba(255,255,255,0.1) !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5) !important;
}

/* ── Upload Area Glass ───────────────────────────────────────────── */
.upload-area {
  background: rgba(255,255,255,0.4) !important;
  border: 1.5px dashed rgba(0,0,0,0.15) !important;
}
[data-theme="dark"] .upload-area {
  background: rgba(255,255,255,0.04) !important;
  border: 1.5px dashed rgba(255,255,255,0.12) !important;
}

/* ── Command Input Glass ─────────────────────────────────────────── */
.command-input {
  background: rgba(255,255,255,0.4) !important;
  border: 1px solid rgba(0,0,0,0.1) !important;
}
[data-theme="dark"] .command-input {
  background: rgba(255,255,255,0.05) !important;
  border: 1px solid rgba(255,255,255,0.08) !important;
}

/* ── Preview Empty State ─────────────────────────────────────────── */
.a4-empty-state {
  color: var(--text-primary) !important;
}


/* ── Fix 1: Auth Overlay wirklich zentriert ──────────────────────── */
.auth-overlay {
  position: fixed !important;
  inset: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  background: transparent !important;
  z-index: 200 !important;
}

/* ── Fix 2: Main App mit zentriertem Panel-Container ─────────────── */
#mainApp {
  height: 100vh !important;
  display: flex !important;
  flex-direction: column !important;
  overflow: hidden !important;
}

/* Wrapper um das main-Layout, zentriert mit Padding */
#mainApp .main {
  flex: 1 !important;
  display: flex !important;
  align-items: stretch !important;
  justify-content: center !important;
  padding: 20px !important;
  gap: 0 !important;
  overflow: hidden !important;
}

/* Das eigentliche Panel-Wrapper — zentriertes Fenster wie Referenzbild */
.app-window {
  display: flex;
  width: 100%;
  max-width: 1200px;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,0.35);
}

/* Panel-Input im Fenster */
.app-window .panel-input {
  border-radius: 0 !important;
  border-right: 1px solid rgba(255,255,255,0.15) !important;
}

/* Panel-Preview im Fenster */
.app-window .panel-preview {
  border-radius: 0 !important;
  flex: 1 !important;
}

/* Export-Bar am unteren Rand des Fensters */
.app-window .export-bar {
  border-radius: 0 0 14px 14px !important;
}

/* Responsive: auf kleinen Screens kein Padding */
@media (max-width: 600px) {
  #mainApp .main {
    padding: 0 !important;
  }
  .app-window {
    border-radius: 0 !important;
    max-width: 100% !important;
  }
}

/* ── Fix: Auth/App Sichtbarkeit ──────────────────────────────────── */
#authOverlay[hidden] { display: none !important; }
#mainApp[hidden]     { display: none !important; }

/* ── Fix: App-Window mehr Platz oben/unten ───────────────────────── */
#mainApp .main {
  padding: 28px 24px !important;
}

/* ── Progress Bar ────────────────────────────────────────────────── */
.progress-bar-wrap {
  width: 100%;
  height: 3px;
  background: var(--border);
  border-radius: 99px;
  margin-top: 8px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 99px;
  transition: width 0.4s ease;
}

/* ── Scroll Fix ──────────────────────────────────────────────────── */
body:has(#mainApp) { overflow: hidden; }

/* ── Vorschau Typografie — kompakt wie PDF ───────────────────────── */
.a4-page {
  font-size: 10pt !important;
  line-height: 1.6 !important;
  padding: 48px 56px !important;
}
.doc-title { font-size: 22pt !important; line-height: 1.2 !important; margin-bottom: 6px !important; }
.doc-title-block { margin-bottom: 24px !important; padding-bottom: 16px !important; }
.doc-subtitle { font-size: 9.5pt !important; }
.doc-h1 { font-size: 14pt !important; margin-top: 22px !important; margin-bottom: 6px !important; }
.doc-h2 { font-size: 11pt !important; margin-top: 16px !important; margin-bottom: 5px !important; }
.doc-h3 { font-size: 10pt !important; margin-top: 12px !important; margin-bottom: 4px !important; }
.doc-p { font-size: 10pt !important; line-height: 1.6 !important; margin-bottom: 8px !important; }
.doc-ul, .doc-ol { margin-bottom: 8px !important; padding-left: 18px !important; }
.doc-ul li, .doc-ol li { font-size: 10pt !important; line-height: 1.55 !important; margin-bottom: 2px !important; }
.doc-blockquote { font-size: 9.5pt !important; margin: 10px 0 !important; padding: 8px 14px !important; }

/* ── Auth/App Sichtbarkeit ───────────────────────────────────────── */
#authOverlay[hidden] { display: none !important; }
#mainApp[hidden]     { display: none !important; }

/* ── App-Window Padding ──────────────────────────────────────────── */
#mainApp .main { padding: 28px 24px !important; }

/* ── Plans Button als Link ───────────────────────────────────────── */
a.btn-pricing {
  text-decoration: none !important;
  display: inline-flex !important;
  align-items: center !important;
}

/* ═══════════════════════════════════════════════════════════
   MOBILE — alle Desktop-Locks aufheben
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  html, body,
  body:has(#mainApp) {
    height: auto !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
  }
  #mainApp {
    height: auto !important;
    min-height: 100dvh !important;
    overflow: visible !important;
  }
  #mainApp .main {
    height: auto !important;
    min-height: unset !important;
    overflow: visible !important;
    flex-direction: column !important;
    padding: 10px !important;
    align-items: stretch !important;
    flex: none !important;
  }
  .app-window {
    flex-direction: column !important;
    overflow: visible !important;
    border-radius: 10px !important;
    box-shadow: 0 8px 32px rgba(0,0,0,0.25) !important;
  }
  .panel-input,
  .panel-preview {
    overflow: visible !important;
    height: auto !important;
    width: 100% !important;
    min-width: unset !important;
    min-height: unset !important;
  }
  .panel-divider { display: none !important; }
  .app-footer {
    position: relative !important;
    margin-top: 12px !important;
    padding: 12px 0 !important;
  }

  /* Header: Username ausblenden */
  .username { display: none !important; }
}

/* ── AI Disclaimer ───────────────────────────────────────────── */
.ai-disclaimer {
  font-size: 10.5px;
  color: var(--text-muted);
  text-align: center;
  padding: 8px 16px;
  opacity: 0.7;
  margin: 0;
}
.footer-disclaimer {
  font-size: 11px;
  color: var(--text-muted);
  opacity: 0.6;
}

/* ── User Dropdown ───────────────────────────────────────────── */
.user-info {
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px;
  min-width: 180px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  z-index: 100;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  background: none;
  color: var(--text-primary);
  font-size: 13px;
  border-radius: 6px;
  cursor: pointer;
  text-align: left;
}

.dropdown-item:hover { background: var(--bg-hover); }
.dropdown-danger { color: #e05555 !important; }
.dropdown-divider { border-top: 1px solid var(--border); margin: 4px 0; }

/* ── Streaming: block fade-in ──────────────────────────────────── */
@keyframes blockFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.block-fade-in {
  animation: blockFadeIn 0.25s ease forwards;
}

/* ── Streaming: block fade-in ──────────────────────────────────── */
@keyframes blockFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.block-fade-in {
  animation: blockFadeIn 0.25s ease forwards;
}

/* ── Stream overlay ────────────────────────────────────────────── */
.a4-pages-wrap.streaming { position: relative; }
#stream-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  background: rgba(255,255,255,0.15);
  border-radius: 12px;
  z-index: 10;
  pointer-events: none;
}
.stream-spinner {
  width: 36px; height: 36px;
  border: 3px solid rgba(120,100,255,0.2);
  border-top-color: #7864ff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.stream-hint {
  font-size: 13px;
  color: #666;
  margin: 0;
}

/* ── Editor button ─────────────────────────────────────────────── */
.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.btn-edit {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}
.btn-edit:hover { background: var(--surface-hover, #f0effe); color: #7864ff; border-color: #c4baff; }
.btn-edit.active { background: #7864ff; color: #fff; border-color: #7864ff; }
.btn-edit.btn-edit-locked { opacity: 0.45; cursor: not-allowed; }
.btn-edit.btn-edit-flash { outline: 2px solid #f59e0b; outline-offset: 2px; }

/* ── Editable blocks ───────────────────────────────────────────── */
.editable-block {
  position: relative;
  border-radius: 4px;
  cursor: pointer;
  transition: outline 0.1s;
  outline: 1.5px dashed transparent;
}
.editable-block:hover { outline-color: #c4baff; }
.editable-block.block-selected {
  outline: 2px solid #7864ff;
  outline-offset: 2px;
  background: rgba(120, 100, 255, 0.04);
}
[contenteditable="true"] { outline: 2px solid #7864ff !important; caret-color: #7864ff; }
[contenteditable="true"]:focus { outline: 2px solid #7864ff !important; }

/* ── Block toolbar ─────────────────────────────────────────────── */
#editor-toolbar {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--surface, #fff);
  border: 1px solid var(--border, #e0ddf8);
  border-radius: 8px;
  padding: 3px 4px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  z-index: 100;
  pointer-events: all;
}
.tb-btn {
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  border: none; background: transparent;
  border-radius: 5px;
  cursor: pointer;
  color: var(--text-secondary, #666);
  transition: background 0.1s, color 0.1s;
}
.tb-btn:hover { background: #f0effe; color: #7864ff; }
.tb-btn-danger:hover { background: #fff0f0; color: #e53e3e; }
.tb-sep { width: 1px; height: 16px; background: var(--border, #e0ddf8); margin: 0 2px; }

/* ── Volume bar ────────────────────────────────────────────────── */
.volume-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: 4px;
}
.volume-track {
  width: 80px;
  height: 5px;
  background: rgba(120,100,255,0.15);
  border-radius: 99px;
  overflow: hidden;
}
.volume-fill {
  height: 100%;
  background: #7864ff;
  border-radius: 99px;
  transition: width 0.4s ease;
}
.volume-fill.volume-warn    { background: #f59e0b; }
.volume-fill.volume-danger  { background: #e53e3e; }
.volume-label {
  font-size: 11px;
  color: var(--text-secondary, #888);
  white-space: nowrap;
}

/* ── Mode toggle ───────────────────────────────────────────────── */
.mode-toggle-wrap {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
}
.mode-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}
.mode-btn:hover { border-color: #c4baff; color: #7864ff; }
.mode-btn-active {
  background: #7864ff;
  color: #fff;
  border-color: #7864ff;
}
.mode-btn-active:hover { background: #6a56f0; border-color: #6a56f0; color: #fff; }

/* ── Math formatting ───────────────────────────────────────────── */
.frac {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  vertical-align: middle;
  margin: 0 2px;
  font-size: 0.85em;
  line-height: 1.1;
}
.frac sup {
  border-bottom: 1px solid currentColor;
  padding: 0 2px 1px;
  font-size: 1em;
}
.frac span {
  display: none;
}
.frac sub {
  padding: 1px 2px 0;
  font-size: 1em;
}

/* ── Mobile header ─────────────────────────────────────────────── */
@media (max-width: 600px) {
  .volume-wrap { display: none !important; }
  #pricingBtn  { display: none !important; }

  .header-inner {
    padding: 0 12px;
    gap: 8px;
  }

  .username {
    max-width: 80px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

/* ── Dropdown volume bar ───────────────────────────────────────── */
.dropdown-volume {
  padding: 8px 14px 10px;
  border-bottom: 1px solid var(--color-border-tertiary);
  margin-bottom: 4px;
}
.dropdown-volume-label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--color-text-secondary);
  margin-bottom: 5px;
}