/* ── Hero ─────────────────────────────────────────── */
.app-hero {
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 1.5rem 1.1rem;
}
.app-hero--matcha {
  background: var(--c-matcha-bg);
  border-bottom-color: var(--c-matcha-border);
}
.app-hero__inner { margin: 0 auto; }
.app-hero__title {
  font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 800;
  color: var(--c-matcha-text); letter-spacing: -.02em;
  margin: 0 0 .5rem; line-height: 1.2;
}
.app-hero__desc {
  font-size: .9rem; color: var(--color-text-secondary);
  max-width: 660px; line-height: 1.6; margin: 0 0 .85rem;
}
.app-hero__chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.hero-chip {
  display: inline-flex; align-items: center;
  padding: .22rem .65rem; font-size: .72rem; font-weight: 700;
  background: var(--color-surface); border: 1.5px solid var(--c-matcha-border);
  border-radius: var(--radius-full); color: var(--c-matcha-text); white-space: nowrap;
}

/* ── Tool shell ────────────────────────────────────────────── */
.tool-wrap {
  background: var(--color-surface);
  border: 1.5px solid var(--c-matcha-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  margin-bottom: var(--space-10);
}

/* ── Controls bar ──────────────────────────────────────────── */
.controls-bar {
  background: var(--c-matcha-bg);
  border-bottom: 1.5px solid var(--c-matcha-border);
  padding: var(--space-3) var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

.ctrl-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.ctrl-label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--c-matcha-text);
  white-space: nowrap;
  min-width: 3rem;
}

/* ── Toggle bar ────────────────────────────────────────────── */
.toggle-bar {
  background: var(--color-surface-alt);
  border-bottom: 1.5px solid var(--color-border);
  padding: var(--space-2) var(--space-5);
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
  align-items: center;
}

.toggle-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  user-select: none;
}

.toggle-item input[type="checkbox"] {
  accent-color: var(--c-matcha-text);
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

/* ── Pill group ────────────────────────────────────────────── */
.pill-group {
  display: flex;
  gap: var(--space-1);
}

.pill {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1.5px solid var(--c-matcha-border);
  background: transparent;
  color: var(--c-matcha-text);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-in-out),
              color var(--duration-fast) var(--ease-in-out);
  white-space: nowrap;
}
.pill:hover { background: var(--c-matcha-border); }
.pill.active { background: var(--c-matcha-text); color: #fff; border-color: var(--c-matcha-text); }

/* ── Range slider ──────────────────────────────────────────── */
.range-slider {
  width: 5rem;
  accent-color: var(--c-matcha-text);
  cursor: pointer;
}

/* ── Split layout ──────────────────────────────────────────── */
.editor-preview-split {
  display: grid;
  grid-template-columns: 380px 1fr;
  overflow: hidden;
}
@media (max-width: 820px) {
  .editor-preview-split { grid-template-columns: 1fr; overflow: visible; }
}

/* ── Editor pane ───────────────────────────────────────────── */
.editor-pane {
  border-right: 1.5px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-surface);
  overflow: hidden;
  height: 640px;
  box-sizing: border-box;
}
@media (max-width: 820px) {
  .editor-pane { height: auto; border-right: none; border-bottom: 1.5px solid var(--color-border); }
}

/* ── Upload bar ────────────────────────────────────────────── */
.upload-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.upload-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  border: 1.5px dashed var(--c-matcha-border);
  background: var(--c-matcha-bg);
  color: var(--c-matcha-text);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-in-out);
  flex-shrink: 0;
  white-space: nowrap;
}
.upload-btn:hover { background: var(--c-matcha-border); }

.upload-filename {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

/* ── Formatting toolbar ────────────────────────────────────── */
.fmt-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-1);
  background: var(--color-surface-alt);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.fmt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 1.8rem;
  padding: 0 var(--space-2);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--text-xs);
  font-family: inherit;
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-in-out), color var(--duration-fast);
  white-space: nowrap;
  line-height: 1;
}
.fmt-btn:hover { background: var(--c-matcha-bg); color: var(--c-matcha-text); border-color: var(--c-matcha-border); }
.fmt-btn code { font-size: 0.9em; background: none; padding: 0; }

.fmt-btn--sep { margin-left: var(--space-1); }

/* ── Markdown textarea ─────────────────────────────────────── */
.md-textarea {
  flex: 1;
  min-height: 0;
  resize: none;
  overflow-y: auto;
  padding: var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-in-out);
}
.md-textarea:focus {
  border-color: var(--c-matcha-text);
  box-shadow: 0 0 0 3px rgb(74 135 74 / 0.15);
}

/* ── Stats row ─────────────────────────────────────────────── */
.stats-row {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.stat-chip {
  flex: 1;
  min-width: 4rem;
  background: var(--c-matcha-bg);
  border: 1.5px solid var(--c-matcha-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2) var(--space-3);
  text-align: center;
}
.stat-chip strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--c-matcha-text);
}
.stat-chip span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ── Action buttons ────────────────────────────────────────── */
.action-row {
  display: flex;
  gap: var(--space-3);
}

.print-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-full);
  border: none;
  background: var(--c-matcha-text);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  cursor: pointer;
  box-shadow: 0 4px 14px rgb(74 135 74 / 0.30);
  transition: opacity var(--duration-fast) var(--ease-in-out),
              transform var(--duration-fast) var(--ease-in-out);
}
.print-btn:hover:not(:disabled) { opacity: 0.9; transform: translateY(-1px); }
.print-btn:active { transform: scale(0.97); }
.print-btn:disabled { opacity: 0.35; cursor: not-allowed; transform: none; }

.outline-btn {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-full);
  border: 1.5px solid var(--c-matcha-border);
  background: transparent;
  color: var(--c-matcha-text);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-in-out);
  white-space: nowrap;
}
.outline-btn:hover:not(:disabled) { background: var(--c-matcha-bg); }
.outline-btn:disabled { opacity: 0.35; cursor: not-allowed; }

@media (max-width: 640px) {
  .controls-bar { padding: var(--space-3); gap: var(--space-2); }
  .ctrl-label { min-width: 0; }
  .pill { padding: var(--space-1) var(--space-2); font-size: var(--text-xs); }
  .toggle-bar { padding: var(--space-2) var(--space-3); gap: var(--space-3); }
  .editor-pane { padding: var(--space-3); }
  .action-row { flex-wrap: wrap; }
  .print-btn { flex: 1 1 100%; }
  .action-row .outline-btn { flex: 1; }
  .doc-page { padding: var(--space-6) var(--space-4); }
}

/* ── Preview pane ──────────────────────────────────────────── */
.preview-pane {
  background: #d8d8d8;
  overflow: hidden; /* hard outer clip — nothing can escape this */
  height: 640px;
  box-sizing: border-box;
}
[data-theme="dark"] .preview-pane { background: #202020; }
@media (max-width: 820px) {
  .preview-pane { height: auto; min-height: 480px; overflow: visible; }
}

/* ── Inner scroll container ────────────────────────────────── */
.preview-scroll {
  width: 100%;
  height: 640px;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-5) var(--space-4);
  box-sizing: border-box;
}
@media (max-width: 820px) {
  .preview-scroll { height: auto; min-height: 480px; }
}

/* ── Pages wrapper (scaled with zoom) ─────────────────────── */
.pages-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  transform-origin: top center;
  width: fit-content;
  margin: 0 auto;
}

/* ── Individual page sheet ─────────────────────────────────── */
.page-sheet {
  background: #fff;
  color: #1a1a1a;
  box-shadow: 0 2px 16px rgba(0,0,0,0.22);
  border-radius: 1px;
  box-sizing: border-box;
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

/* ── Page content area ─────────────────────────────────────── */
.page-content {
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

/* ── Page number ───────────────────────────────────────────── */
.page-num {
  flex-shrink: 0;
  text-align: center;
  padding: 4px 0 10px;
  font-size: 8pt;
  color: #aaa;
  font-family: system-ui, sans-serif;
  user-select: none;
  pointer-events: none;
}

/* ── Document page (used as probe + base for page-sheet) ───── */
.doc-page {
  width: 100%;
  max-width: 700px;
  background: #fff;
  color: #1a1a1a;
  box-shadow: 0 4px 28px rgba(0,0,0,0.18);
  border-radius: 2px;
  padding: 48px 56px;
  min-height: 400px;
  position: relative;
  box-sizing: border-box;
}

/* ── Theme: Clean ──────────────────────────────────────────── */
.doc-page.theme-clean {
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 11pt;
  line-height: 1.7;
}
.doc-page.theme-clean h1,
.doc-page.theme-clean h2,
.doc-page.theme-clean h3,
.doc-page.theme-clean h4 {
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-weight: 700;
}

/* ── Theme: Technical ──────────────────────────────────────── */
.doc-page.theme-technical {
  font-family: 'Courier New', Courier, monospace;
  font-size: 10.5pt;
  line-height: 1.6;
}
.doc-page.theme-technical h1,
.doc-page.theme-technical h2,
.doc-page.theme-technical h3,
.doc-page.theme-technical h4 {
  font-family: 'Courier New', Courier, monospace;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ── Theme: Essay ──────────────────────────────────────────── */
.doc-page.theme-essay {
  font-family: Georgia, 'Times New Roman', Times, serif;
  font-size: 12pt;
  line-height: 1.8;
}
.doc-page.theme-essay h1,
.doc-page.theme-essay h2,
.doc-page.theme-essay h3,
.doc-page.theme-essay h4 {
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 700;
}

/* ── Theme: Minimal ─────────────────────────────────────────── */
.doc-page.theme-minimal {
  font-family: Georgia, 'Times New Roman', Times, serif;
  font-size: 11pt;
  line-height: 1.5;
  color: #000;
}
.doc-page.theme-minimal h1 {
  font-size: 1.4em; font-weight: 700; border: none;
  padding-bottom: 0; color: #000 !important; margin: 0 0 .4em;
}
.doc-page.theme-minimal h2 {
  font-size: 1.2em; font-weight: 700; border: none;
  margin: 1em 0 .3em; color: #000 !important; padding-bottom: 0;
}
.doc-page.theme-minimal h3 { font-size: 1.05em; font-weight: 700; color: #000 !important; margin: .8em 0 .25em; }
.doc-page.theme-minimal h4 { font-size: 1em;    font-weight: 700; color: #000 !important; margin: .6em 0 .2em; }
.doc-page.theme-minimal a  { color: #000 !important; text-decoration: underline; }
.doc-page.theme-minimal hr { border-top: 1px solid #ccc !important; margin: 1em 0; }
.doc-page.theme-minimal blockquote { border-left: 3px solid #ccc; background: none; color: #333; }

/* ── Theme: Presentation ────────────────────────────────────── */
.doc-page.theme-presentation {
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 14pt;
  line-height: 1.8;
  color: #111;
}
.doc-page.theme-presentation h1 {
  font-size: 2.4em;
  color: var(--doc-accent, #2563eb);
  border-bottom: 3px solid var(--doc-accent, #2563eb);
  padding: .3em 0;
  margin-top: 1.5em;
}
.doc-page.theme-presentation h2 {
  font-size: 1.8em;
  color: var(--doc-accent, #2563eb);
  border-bottom: 2px solid rgba(37, 99, 235, 0.25);
}
.doc-page.theme-presentation h3 { font-size: 1.4em; color: var(--doc-accent, #2563eb); }
.doc-page.theme-presentation h4 { font-size: 1.2em; color: var(--doc-accent, #2563eb); }
.doc-page.theme-presentation a  { color: var(--doc-accent, #2563eb); }
.doc-page.theme-presentation hr { border-top: 3px solid var(--doc-accent, #2563eb); margin: 2em 0; }
.doc-page.theme-presentation p  { font-size: 1em; margin: 0 0 1.2em; }
.doc-page.theme-presentation li { margin-bottom: .5em; }

/* ── Shared document typography ────────────────────────────── */
.doc-page h1 {
  font-size: 2em;
  margin: 0 0 0.5em;
  border-bottom: 2px solid #e5e5e5;
  padding-bottom: 0.3em;
  color: var(--doc-accent, #2563eb);
}
.doc-page h2 {
  font-size: 1.5em;
  margin: 1.5em 0 0.5em;
  border-bottom: 1px solid #e5e5e5;
  padding-bottom: 0.2em;
  color: var(--doc-accent, #2563eb);
}
.doc-page h3 { font-size: 1.25em; margin: 1.2em 0 0.4em; color: var(--doc-accent, #2563eb); }
.doc-page h4 { font-size: 1.05em; margin: 1em 0 0.3em;  color: var(--doc-accent, #2563eb); }
.doc-page p  { margin: 0 0 1em; }
.doc-page ul, .doc-page ol { margin: 0 0 1em 1.5em; }
.doc-page li { margin-bottom: 0.25em; }
.doc-page blockquote {
  margin: 1em 0;
  padding: 0.5em 1em;
  border-left: 4px solid #4a874a;
  background: #f4f9f4;
  color: #555;
  border-radius: 0 4px 4px 0;
}
.doc-page code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.875em;
  line-height: 1;
  background: #f0f0f0;
  padding: 0.2em 0.4em;
  border-radius: 3px;
  vertical-align: middle;
}
.doc-page pre {
  margin: 1em 0;
  border-radius: 6px;
  overflow: auto;
  font-size: 0.875em;
}
.doc-page pre code {
  background: transparent;
  padding: 0;
  font-size: 1em;
}
.doc-page table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.9em;
}
.doc-page th {
  background: #f0f0f0;
  padding: 0.5em 0.75em;
  border: 1px solid #d5d5d5;
  text-align: left;
  font-weight: 600;
}
.doc-page td {
  padding: 0.4em 0.75em;
  border: 1px solid #d5d5d5;
}
.doc-page tr:nth-child(even) td { background: #f9f9f9; }
.doc-page hr { border: none; border-top: 2px solid var(--doc-accent, #e5e5e5); margin: 1.5em 0; }
.doc-page a { color: var(--doc-accent, #2563eb); }
.doc-page img { max-width: 100%; border-radius: 4px; }
.doc-page input[type="checkbox"] {
  margin-right: 0.4em;
  accent-color: #4a874a;
  width: 0.95em;
  height: 0.95em;
  vertical-align: middle;
  position: relative;
  top: -0.08em;
}

/* ── Table of Contents ─────────────────────────────────────── */
.doc-toc {
  background: #f5fbf5;
  border: 1px solid #c2dfc2;
  border-radius: 6px;
  padding: 1em 1.25em;
  margin-bottom: 2em;
}
.doc-toc-title {
  font-size: 0.85em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #4a874a;
  margin: 0 0 0.75em;
}
.doc-toc ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.doc-toc li { margin: 0.2em 0; font-size: 0.9em; }
.doc-toc a { color: #2a7a2a; text-decoration: none; }
.doc-toc a:hover { text-decoration: underline; }

/* ── Empty state ───────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 500px;
  gap: var(--space-3);
  color: var(--color-text-muted);
  text-align: center;
}
.empty-state .es-icon { font-size: 3rem; opacity: 0.35; }
.empty-state p { font-size: var(--text-sm); max-width: 18rem; margin: 0; }

/* ── Privacy note ──────────────────────────────────────────── */
.privacy-note {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  justify-content: center;
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
}

/* ── Toast ─────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #1a3a1a;
  color: #fff;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  transition: transform 0.3s ease;
  z-index: 9999;
  pointer-events: none;
  white-space: nowrap;
}
.toast.show { transform: translateX(-50%) translateY(0); }

.learn-more{max-width:820px;margin:1.25rem auto 0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.1rem 1.5rem}
.learn-more-title{font-size:1.1rem;font-weight:800;color:var(--c-matcha-text);margin:0 0 .75rem}
.learn-more h3{font-size:1rem;font-weight:800;color:var(--color-text-primary);margin:1.1rem 0 .5rem}
.learn-more p{font-size:.88rem;line-height:1.65;color:var(--color-text-secondary);margin:0 0 .75rem}
.learn-more a{color:var(--c-matcha-text)}
.learn-more .faq-item{margin-bottom:.75rem}
.learn-more .faq-q{font-size:.88rem;font-weight:700;color:var(--color-text-primary);margin:0 0 .25rem}
.learn-more-meta{font-size:.72rem;color:var(--color-text-muted);margin-top:1rem}