/* EPUB Editor — page styles. Builds on /shared/style.css tokens.
   Full-height app shell (overrides the usual centered .container layout). */

.epub-body { margin: 0; height: 100vh; overflow: hidden; background: var(--bg); }

.epub-app { display: flex; flex-direction: column; height: 100vh; }

/* ── top bar ─────────────────────────────────────────────────────────── */
.epub-topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px; border-bottom: 1px solid var(--border);
  background: var(--surface); backdrop-filter: var(--glass-blur);
  flex: 0 0 auto;
}
.epub-home { text-decoration: none; font-size: 1.3rem; line-height: 1; }
.epub-logo { font-weight: 700; white-space: nowrap; color: var(--text); }
.epub-booktitle {
  flex: 1 1 auto; min-width: 120px; max-width: 460px;
  font-size: 1rem; font-weight: 600;
  padding: 7px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg-secondary); color: var(--text);
}
.epub-save {
  font-size: .8rem; padding: 3px 10px; border-radius: 999px;
  background: var(--bg-secondary); color: var(--text-muted); white-space: nowrap;
}
.epub-save[data-state="saving"] { color: var(--warning); }
.epub-save[data-state="saved"]  { color: var(--success); }
.epub-save[data-state="error"]  { color: var(--error); }
.epub-save[data-state="dirty"]  { color: var(--text-secondary); }
.epub-topbar-actions { display: flex; gap: 8px; margin-left: auto; flex-wrap: wrap; }

/* buttons */
.btn-ghost, .btn-primary, .btn-sm, .btn-mini {
  font-family: var(--font); cursor: pointer; border-radius: var(--radius-sm);
  border: 1px solid var(--border); transition: var(--transition);
  background: var(--bg-secondary); color: var(--text); padding: 7px 12px; font-size: .9rem;
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary {
  background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600;
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-sm { padding: 5px 10px; font-size: .82rem; }
.btn-mini {
  padding: 2px 7px; font-size: .8rem; background: transparent; border-color: transparent;
  color: var(--text-muted); border-radius: var(--radius-sm);
}
.btn-mini:hover { background: var(--bg-secondary); color: var(--error); }

/* ── main split ──────────────────────────────────────────────────────── */
.epub-main { flex: 1 1 auto; display: flex; min-height: 0; }

.epub-sidebar {
  flex: 0 0 270px; display: flex; flex-direction: column; min-height: 0;
  border-right: 1px solid var(--border); background: var(--surface);
}
.epub-side-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px 6px; font-weight: 700; font-size: .8rem; letter-spacing: .04em;
  text-transform: uppercase; color: var(--text-muted);
}
.epub-chapters { list-style: none; margin: 0; padding: 4px 8px; overflow-y: auto; flex: 1 1 auto; }
.epub-chap {
  display: flex; align-items: center; gap: 8px; padding: 8px 10px; margin-bottom: 3px;
  border-radius: var(--radius-sm); cursor: pointer; color: var(--text-secondary);
  border: 1px solid transparent; user-select: none;
}
.epub-chap:hover { background: var(--bg-secondary); }
.epub-chap.active { background: var(--primary-lighter); border-color: var(--primary-light); color: var(--text); }
.epub-chap.dragging { opacity: .5; }
.epub-chap .grip { cursor: grab; color: var(--text-muted); font-size: .9rem; }
.epub-chap .ctitle { flex: 1 1 auto; font-size: .9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.epub-chap .cnum { font-size: .72rem; color: var(--text-muted); }
.epub-chap .cdel { opacity: 0; }
.epub-chap:hover .cdel { opacity: 1; }

.epub-side-panels { display: grid; gap: 5px; padding: 10px; border-top: 1px solid var(--border); }
.side-btn {
  text-align: left; padding: 9px 12px; border-radius: var(--radius-sm); cursor: pointer;
  border: 1px solid var(--border); background: var(--bg-secondary); color: var(--text); font-size: .9rem;
  transition: var(--transition);
}
.side-btn:hover { border-color: var(--primary); color: var(--primary); }
.epub-side-foot { padding: 10px 14px; font-size: .76rem; color: var(--text-muted); border-top: 1px solid var(--border); }

/* ── editor ──────────────────────────────────────────────────────────── */
.epub-editor { flex: 1 1 auto; display: flex; flex-direction: column; min-width: 0; background: var(--bg); }
.epub-editor-head {
  display: flex; align-items: center; gap: 12px; padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}
.epub-chaptitle {
  flex: 1 1 auto; font-size: 1.05rem; font-weight: 600; padding: 7px 12px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg-secondary); color: var(--text);
}
.epub-tabs { display: flex; gap: 4px; background: var(--bg-secondary); padding: 4px; border-radius: var(--radius-sm); }
.epub-tabs .tab {
  border: 0; background: transparent; color: var(--text-secondary); cursor: pointer;
  padding: 6px 12px; border-radius: 8px; font-size: .85rem; font-family: var(--font);
}
.epub-tabs .tab.active { background: var(--surface-solid); color: var(--primary); box-shadow: var(--shadow-sm); font-weight: 600; }

.epub-toolbar {
  display: flex; flex-wrap: wrap; gap: 3px; align-items: center;
  padding: 8px 16px; border-bottom: 1px solid var(--border); background: var(--surface);
}
.epub-toolbar button {
  min-width: 32px; height: 30px; padding: 0 8px; border: 1px solid transparent;
  background: transparent; color: var(--text); border-radius: 7px; cursor: pointer; font-size: .9rem;
  font-family: var(--font);
}
.epub-toolbar button:hover { background: var(--bg-secondary); border-color: var(--border); }
.epub-toolbar .sep { width: 1px; height: 20px; background: var(--border); margin: 0 5px; }

.epub-canvas { flex: 1 1 auto; min-height: 0; position: relative; overflow: hidden; }
.epub-rich {
  height: 100%; overflow-y: auto; padding: 32px clamp(16px, 8vw, 120px);
  background: var(--bg); color: var(--text); outline: none;
  font-family: Georgia, 'Times New Roman', serif; line-height: 1.7; font-size: 1.05rem;
}
.epub-rich:focus { outline: none; }
.epub-rich h1 { font-size: 1.8em; } .epub-rich h2 { font-size: 1.45em; } .epub-rich h3 { font-size: 1.2em; }
.epub-rich blockquote { margin: 1em 1.5em; font-style: italic; color: var(--text-secondary); border-left: 3px solid var(--border); padding-left: 1em; }
.epub-rich img { max-width: 100%; height: auto; }
.epub-code { height: 100%; }
.epub-code .CodeMirror { height: 100%; font-size: .9rem; }
.epub-preview { width: 100%; height: 100%; border: 0; background: #fff; }

.epub-editor-foot { flex: 0 0 auto; padding: 6px 16px; border-top: 1px solid var(--border); font-size: .78rem; color: var(--text-muted); }

/* ── modal ───────────────────────────────────────────────────────────── */
.epub-modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 1000;
  display: flex; align-items: flex-start; justify-content: center; padding: 5vh 16px; overflow-y: auto;
}
.epub-modal[hidden] { display: none; }
.epub-modal-card {
  width: min(720px, 100%); background: var(--surface-solid); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden;
}
.epub-modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.epub-modal-head h2 { margin: 0; font-size: 1.15rem; color: var(--text); }
.epub-modal-body { padding: 20px; max-height: 75vh; overflow-y: auto; }

.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 5px; font-size: .85rem; font-weight: 600; color: var(--text-secondary); }
.form input, .form select, .form textarea {
  font: inherit; font-weight: 400; padding: 8px 11px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); background: var(--bg-secondary); color: var(--text); width: 100%;
}
.form .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form .row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.form .row input { flex: 1 1 auto; }
.check { flex-direction: row !important; align-items: center; gap: 8px !important; }
.check input { width: auto; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 4px; }
.creator-row .cr-name { flex: 2; } .creator-row .cr-role { flex: 1; }
.muted { color: var(--text-muted); font-size: .85rem; }

/* assets */
.assets { display: grid; gap: 20px; }
.cover-box { display: grid; gap: 10px; justify-items: start; }
.cover-thumb { max-width: 180px; border-radius: var(--radius-sm); box-shadow: var(--shadow-md); }
.cover-empty { width: 140px; height: 200px; display: grid; place-items: center; background: var(--bg-secondary); border: 1px dashed var(--border); border-radius: var(--radius-sm); color: var(--text-muted); }
.img-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px; }
.img-grid figure { margin: 0; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; background: var(--bg-secondary); position: relative; }
.img-grid img { width: 100%; height: 90px; object-fit: cover; display: block; }
.img-grid figcaption { font-size: .7rem; padding: 4px 6px; color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.img-actions { position: absolute; top: 4px; right: 4px; display: flex; gap: 3px; }
.img-actions .btn-mini { background: rgba(0,0,0,.5); color: #fff; }

/* validate */
.validate h3 { margin: 16px 0 6px; font-size: .95rem; }
.v-err { color: var(--error); } .v-warn { color: var(--warning); } .v-pass { color: var(--success); }
.v-ok { color: var(--success); font-weight: 600; }
.v-list { margin: 0; padding-left: 20px; font-size: .88rem; display: grid; gap: 3px; }

/* shelf */
.shelf-actions { display: flex; gap: 10px; margin-bottom: 14px; }
.shelf-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.shelf-list li { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-secondary); }
.shelf-list li.current { border-color: var(--primary); }
.sh-meta { display: grid; gap: 2px; min-width: 0; }
.sh-title { font-weight: 600; color: var(--text); }
.sh-act { display: flex; gap: 6px; align-items: center; }

/* ── responsive ──────────────────────────────────────────────────────── */
@media (max-width: 820px) {
  .epub-sidebar { flex-basis: 200px; }
  .epub-booktitle { max-width: 180px; }
  .epub-topbar-actions .btn-ghost { padding: 7px 9px; }
}
@media (max-width: 640px) {
  .epub-body { overflow: auto; }
  .epub-main { flex-direction: column; }
  .epub-sidebar { flex: 0 0 auto; max-height: 38vh; border-right: 0; border-bottom: 1px solid var(--border); }
  .epub-editor { min-height: 60vh; }
}