/* ============================================
   Ebook converter pages (ebook core) - shared
   Light mode default + dark mode. Green accent by default; a page can override --ebt-primary*. Prefix: ebt-
   ============================================ */
:root {
    --ebt-primary: #339966;
    --ebt-primary-dark: #2b8159;
    --ebt-primary-light: #e3f4ea;
    --ebt-danger: #e64e4e;
    --ebt-danger-light: #fdecec;
    --ebt-warn: #b7791f;
    --ebt-warn-light: #fdf5e6;
    --ebt-bg: #ffffff;
    --ebt-bg-soft: #f4f9f6;
    --ebt-bg-mute: #eaf3ee;
    --ebt-text: #1d2b24;
    --ebt-text-2: #3d4f45;
    --ebt-muted: #6b7a72;
    --ebt-border: #d5e6dc;
    --ebt-shadow: 0 2px 10px rgba(20, 60, 40, 0.07);
    --ebt-radius: 12px;
}
[data-theme="dark"] {
    --ebt-primary: #4cc38a;
    --ebt-primary-dark: #3aa874;
    --ebt-primary-light: rgba(76, 195, 138, 0.14);
    --ebt-danger: #f87171;
    --ebt-danger-light: rgba(248, 113, 113, 0.14);
    --ebt-warn: #f6c35b;
    --ebt-warn-light: rgba(246, 195, 91, 0.12);
    --ebt-bg: #16201b;
    --ebt-bg-soft: #1b2822;
    --ebt-bg-mute: #22322a;
    --ebt-text: #e3efe8;
    --ebt-text-2: #c2d3c9;
    --ebt-muted: #93a59b;
    --ebt-border: #2c3f35;
    --ebt-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

.ebt-wrap { color: var(--ebt-text); }
.ebt-wrap .tool-title { color: var(--ebt-primary); }
.ebt-wrap .tool-title svg { color: var(--ebt-primary); }
.ebt-wrap .tool-description { max-width: 800px; margin-left: auto; margin-right: auto; }
.ebt-wrap a { color: var(--ebt-primary); }
.ebt-wrap [hidden], .ebt-overlay[hidden] { display: none !important; }
.ebt-wrap svg.lucide { width: 18px; height: 18px; vertical-align: -3px; flex-shrink: 0; }

/* Dropzone */
.ebt-dropzone {
    border: 2px dashed var(--ebt-border); background: var(--ebt-bg-soft); border-radius: 16px;
    padding: 40px 20px; text-align: center; cursor: pointer; transition: border-color .2s, background .2s;
    max-width: 900px; margin: 0 auto;
}
.ebt-dropzone:hover, .ebt-dropzone:focus-visible, .ebt-dropzone.is-over { border-color: var(--ebt-primary); background: var(--ebt-primary-light); outline: none; }
.ebt-wrap svg.ebt-dropzone-icon { width: 48px; height: 48px; color: var(--ebt-primary); }
.ebt-dropzone-title { margin: 10px 0 4px; font-size: 1.2rem; color: var(--ebt-text); }
.ebt-dropzone-sub { margin: 0; color: var(--ebt-muted); font-size: .92rem; }

.ebt-samples { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: center; margin: 12px auto 0; font-size: .9rem; color: var(--ebt-muted); }
.ebt-samples button {
    display: inline-flex; gap: 6px; align-items: center; border: 1px solid var(--ebt-border); background: var(--ebt-bg);
    color: var(--ebt-text-2); border-radius: 999px; padding: 5px 12px; cursor: pointer; font: inherit;
}
.ebt-samples button:hover { border-color: var(--ebt-primary); color: var(--ebt-primary); }
.ebt-wrap .ebt-samples svg.lucide { width: 15px; height: 15px; }

/* Messages */
.ebt-error {
    display: flex; gap: 10px; max-width: 900px; margin: 16px auto 0; padding: 12px 16px; border-radius: var(--ebt-radius);
    background: var(--ebt-danger-light); color: var(--ebt-danger); border: 1px solid var(--ebt-danger); line-height: 1.5;
}
.ebt-error a { color: inherit; font-weight: 600; }
.ebt-pass {
    display: flex; flex-wrap: wrap; gap: 10px; align-items: center; max-width: 900px; margin: 16px auto 0; padding: 12px 16px;
    border: 1px solid var(--ebt-border); border-radius: var(--ebt-radius); background: var(--ebt-bg-soft);
}
.ebt-pass label { font-weight: 600; }
.ebt-pass input { flex: 1; min-width: 160px; }
.ebt-warn { display: flex; gap: 8px; padding: 10px 12px; border-radius: 10px; background: var(--ebt-warn-light); color: var(--ebt-warn); line-height: 1.5; margin: 10px 0; }
.ebt-warn a { color: inherit; font-weight: 600; }
.ebt-muted { color: var(--ebt-muted); font-size: .9rem; margin: 8px 0; }

/* Inputs & buttons */
.ebt-input, .ebt-pass input {
    width: 100%; box-sizing: border-box; padding: 9px 11px; border: 1px solid var(--ebt-border); border-radius: 8px;
    background: var(--ebt-bg); color: var(--ebt-text); font: inherit;
}
.ebt-input:focus, .ebt-pass input:focus { outline: 2px solid var(--ebt-primary-light); border-color: var(--ebt-primary); }
.ebt-btn {
    display: inline-flex; gap: 8px; align-items: center; justify-content: center; padding: 10px 18px; border-radius: 10px;
    border: 1px solid var(--ebt-primary); background: var(--ebt-bg); color: var(--ebt-primary); font: inherit; font-weight: 600; cursor: pointer;
}
.ebt-btn-primary { width: 100%; background: var(--ebt-primary); color: #fff; padding: 13px 18px; font-size: 1.02rem; margin-top: 6px; }
.ebt-btn-primary:hover { background: var(--ebt-primary-dark); }
.ebt-btn:disabled { opacity: .6; cursor: default; }
.ebt-link-btn { display: inline-flex; gap: 5px; align-items: center; border: 0; background: none; color: var(--ebt-primary); font: inherit; font-weight: 600; cursor: pointer; }

/* Work area */
.ebt-work { max-width: 1100px; margin: 22px auto 0; }
.ebt-work h2, .ebt-card h2 { display: flex; gap: 8px; align-items: center; font-size: 1.1rem; margin: 0 0 12px; color: var(--ebt-primary); }
.ebt-files-head { display: flex; justify-content: space-between; align-items: center; }
.ebt-files-head h2 { margin: 0; }
.ebt-file-list { display: flex; flex-direction: column; gap: 6px; margin: 10px 0 18px; }
.ebt-file {
    display: flex; gap: 10px; align-items: center; padding: 9px 12px; border: 1px solid var(--ebt-border); border-radius: 10px;
    background: var(--ebt-bg); cursor: pointer;
}
.ebt-file.is-active { border-color: var(--ebt-primary); background: var(--ebt-primary-light); }
.ebt-file > svg.lucide { color: var(--ebt-primary); }
.ebt-file-info { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.ebt-file-info b { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; }
.ebt-file-info span { font-size: .84rem; color: var(--ebt-muted); }
.ebt-file-ok { color: var(--ebt-primary); }
.ebt-file-x { border: 0; background: none; color: var(--ebt-muted); cursor: pointer; padding: 4px; border-radius: 6px; display: inline-flex; }
.ebt-file-x:hover { color: var(--ebt-danger); background: var(--ebt-danger-light); }

.ebt-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 18px; align-items: start; }
.ebt-settings, .ebt-preview-card, .ebt-card {
    background: var(--ebt-bg); border: 1px solid var(--ebt-border); border-radius: var(--ebt-radius); padding: 18px; box-shadow: var(--ebt-shadow);
}
.ebt-group { margin-bottom: 14px; }
.ebt-group-label { display: block; font-size: .82rem; font-weight: 700; text-transform: uppercase; letter-spacing: .03em; color: var(--ebt-muted); margin-bottom: 6px; }
.ebt-hint { font-size: .82rem; color: var(--ebt-muted); margin: 6px 0 0; line-height: 1.4; }
.ebt-seg { display: flex; border: 1px solid var(--ebt-border); border-radius: 9px; overflow: hidden; }
.ebt-seg label { flex: 1; margin: 0; cursor: pointer; }
.ebt-seg input { position: absolute; opacity: 0; pointer-events: none; }
.ebt-seg span { display: flex; gap: 6px; align-items: center; justify-content: center; padding: 8px 6px; font-size: .9rem; color: var(--ebt-text-2); background: var(--ebt-bg); text-align: center; }
.ebt-seg label + label span { border-left: 1px solid var(--ebt-border); }
.ebt-seg input:checked + span { background: var(--ebt-primary); color: #fff; font-weight: 600; }
.ebt-seg input:focus-visible + span { outline: 2px solid var(--ebt-primary); outline-offset: -3px; }
.ebt-wrap .ebt-seg svg.lucide { width: 15px; height: 15px; }
.ebt-check { display: flex; gap: 9px; align-items: flex-start; margin: 0 0 10px; cursor: pointer; }
.ebt-check input { margin-top: 3px; accent-color: var(--ebt-primary); }
.ebt-check span { display: flex; flex-direction: column; font-weight: 600; font-size: .93rem; }
.ebt-check small { font-weight: 400; color: var(--ebt-muted); font-size: .82rem; }

/* Result */
.ebt-result { margin-top: 18px; }
.ebt-done { border: 1px solid var(--ebt-primary); background: var(--ebt-primary-light); border-radius: var(--ebt-radius); padding: 16px 18px; }
.ebt-done h3 { display: flex; gap: 8px; align-items: center; margin: 0 0 6px; color: var(--ebt-primary); font-size: 1.05rem; }
.ebt-done p { margin: 6px 0; }
.ebt-dls { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.ebt-dl { display: inline-flex; gap: 8px; align-items: center; padding: 9px 14px; border-radius: 10px; background: var(--ebt-primary); color: #fff !important; text-decoration: none; font-weight: 600; }
.ebt-dl:hover { background: var(--ebt-primary-dark); }
.ebt-dl span { font-weight: 400; opacity: .85; font-size: .85rem; }

/* Info */
.ebt-info { max-width: 1000px; margin: 30px auto 0; display: flex; flex-direction: column; gap: 18px; }
.ebt-card p { line-height: 1.65; color: var(--ebt-text-2); }
.ebt-steps { margin: 0; padding-left: 22px; line-height: 1.7; color: var(--ebt-text-2); }
.ebt-steps b { color: var(--ebt-text); }
.ebt-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.ebt-features > div { display: flex; gap: 10px; align-items: flex-start; padding: 12px; border-radius: 10px; background: var(--ebt-bg-soft); }
.ebt-features > div > svg.lucide { color: var(--ebt-primary); width: 22px; height: 22px; margin-top: 2px; }
.ebt-features h3 { margin: 0 0 2px; font-size: .95rem; color: var(--ebt-text); }
.ebt-features p { margin: 0; font-size: .85rem; line-height: 1.45; }

/* Overlay */
.ebt-overlay { position: fixed; inset: 0; background: rgba(10, 20, 15, .55); display: flex; align-items: center; justify-content: center; z-index: 9999; }
.ebt-overlay-card { background: var(--ebt-bg); color: var(--ebt-text); border-radius: 16px; padding: 26px 30px; width: min(360px, 90vw); text-align: center; box-shadow: 0 10px 40px rgba(0,0,0,.3); }
.ebt-spinner { width: 42px; height: 42px; margin: 0 auto 12px; border: 4px solid var(--ebt-bg-mute); border-top-color: var(--ebt-primary); border-radius: 50%; animation: ebtspin .8s linear infinite; }
@keyframes ebtspin { to { transform: rotate(360deg); } }
.ebt-progress { height: 8px; background: var(--ebt-bg-mute); border-radius: 99px; overflow: hidden; margin: 12px 0 6px; }
.ebt-progress span { display: block; height: 100%; width: 0; background: var(--ebt-primary); transition: width .2s; }
.ebt-pct { font-size: .85rem; color: var(--ebt-muted); }

@media (max-width: 820px) {
    .ebt-grid { grid-template-columns: 1fr; }
    .ebt-page-card { position: static; }
    .ebt-dropzone { padding: 28px 14px; }
}

/* Book cards */
.ebt-list { display: flex; flex-direction: column; gap: 8px; margin: 10px 0 18px; }
.ebt-book { display: flex; gap: 12px; align-items: center; padding: 10px 12px; border: 1px solid var(--ebt-border); border-radius: 10px; background: var(--ebt-bg); }
.ebt-cover { width: 44px; height: 62px; object-fit: cover; border-radius: 4px; flex-shrink: 0; box-shadow: 0 1px 4px rgba(0,0,0,.18); background: var(--ebt-bg-mute); }
.ebt-cover-none { display: flex; align-items: center; justify-content: center; color: var(--ebt-muted); box-shadow: none; }
.ebt-book-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.ebt-book-info b { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ebt-book-info > span { font-size: .84rem; color: var(--ebt-muted); }
.ebt-tag { display: inline-flex; gap: 5px; align-items: center; align-self: flex-start; font-size: .8rem; padding: 2px 8px; border-radius: 99px; margin-top: 3px; }
.ebt-wrap .ebt-tag svg.lucide { width: 13px; height: 13px; }
.ebt-tag-bad { background: var(--ebt-danger-light); color: var(--ebt-danger); }
.ebt-tag-ok { background: rgba(51,153,102,.13); color: #2b8159; }
[data-theme="dark"] .ebt-tag-ok { color: #4cc38a; }
.ebt-x { border: 0; background: none; color: var(--ebt-muted); cursor: pointer; padding: 4px; border-radius: 6px; display: inline-flex; }
.ebt-x:hover { color: var(--ebt-danger); background: var(--ebt-danger-light); }

/* Settings layout */
.ebt-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0 18px; }
.ebt-meta { border-top: 1px solid var(--ebt-border); margin-top: 6px; padding-top: 14px; }
.ebt-meta h3 { display: flex; gap: 8px; align-items: center; font-size: .98rem; margin: 0 0 10px; color: var(--ebt-text); }
.ebt-file-btn { display: flex; gap: 10px; align-items: center; }
.ebt-file-btn label { display: inline-flex; gap: 6px; align-items: center; padding: 8px 12px; border: 1px solid var(--ebt-border); border-radius: 8px; cursor: pointer; font-weight: 600; font-size: .9rem; color: var(--ebt-text-2); background: var(--ebt-bg); }
.ebt-file-btn label:hover { border-color: var(--ebt-primary); color: var(--ebt-primary); }
.ebt-file-btn span { font-size: .84rem; color: var(--ebt-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Page preview */
.ebt-page-card { position: sticky; top: 16px; text-align: center; }
.ebt-page-stage { display: flex; align-items: center; justify-content: center; min-height: 240px; padding: 10px; background: var(--ebt-bg-mute); border-radius: 10px; }
.ebt-page { position: relative; box-sizing: border-box; background: #fff; color: #222; box-shadow: 0 4px 16px rgba(0,0,0,.18); overflow: hidden; transition: width .2s, height .2s, padding .2s; }
.ebt-page-text { line-height: 1.45; overflow: hidden; height: 100%; text-align: left; }
.ebt-page-text b { display: block; font-size: 1.5em; margin-bottom: .4em; }
.ebt-page-text p { margin: 0 0 .5em; }
.ebt-page-num { position: absolute; bottom: 3px; left: 0; right: 0; font-size: 7px; color: #888; }
.ebt-page-label { font-size: .84rem; color: var(--ebt-muted); margin: 8px 0 0; }

/* Result notes */
.ebt-btn span { font-weight: 400; opacity: .85; font-size: .85rem; }
.ebt-dls .ebt-btn-primary { width: auto; margin: 0; }
.ebt-note { display: flex; gap: 8px; align-items: flex-start; font-size: .9rem; color: var(--ebt-text-2); }
.ebt-note-bad { color: var(--ebt-danger); }

@media (max-width: 820px) {
    .ebt-page-card { position: static; }
    .ebt-book { align-items: flex-start; }
}

/* Accent variants (class on <html>) - accent + matching soft tints */
html.ebt-red { --ebt-primary: #e64e4e; --ebt-primary-dark: #c93c3c; --ebt-primary-light: #fdecec; --ebt-bg-soft: #fbf6f6; --ebt-bg-mute: #f5eaea; --ebt-border: #ecd8d8; }
html.ebt-blue { --ebt-primary: #3399cc; --ebt-primary-dark: #2a7fab; --ebt-primary-light: #e4f2f9; --ebt-bg-soft: #f4f8fb; --ebt-bg-mute: #e8f1f7; --ebt-border: #d3e3ee; }
html[data-theme="dark"].ebt-red { --ebt-primary: #f07070; --ebt-primary-dark: #e05a5a; --ebt-primary-light: rgba(240,112,112,.14); --ebt-bg: #201616; --ebt-bg-soft: #281b1b; --ebt-bg-mute: #322222; --ebt-border: #3f2c2c; }
html[data-theme="dark"].ebt-blue { --ebt-primary: #5bb3e0; --ebt-primary-dark: #3fa0d2; --ebt-primary-light: rgba(91,179,224,.14); --ebt-bg: #161c20; --ebt-bg-soft: #1b2329; --ebt-bg-mute: #222c33; --ebt-border: #2c3a44; }

/* Notices */
.ebt-caps { display: flex; gap: 10px; max-width: 900px; margin: 14px auto 0; padding: 12px 16px; border-radius: var(--ebt-radius); background: var(--ebt-warn-light); color: var(--ebt-warn); border: 1px solid var(--ebt-warn); line-height: 1.5; }
.ebt-caps a { color: inherit; font-weight: 600; }
.ebt-grid-1 { grid-template-columns: 1fr; }

/* running header / footer in the page preview (2026-10-12) */
.ebt-page-head { position: absolute; top: 3px; left: 8px; right: 8px; font-size: 6px; color: #888; text-align: center; font-family: Arial, sans-serif; }
.ebt-page-num { left: 8px; right: 8px; font-family: Arial, sans-serif; font-size: 6px; }
.ebt-page-head.is-two, .ebt-page-num.is-two { display: flex; justify-content: space-between; }
.ebt-page-head[hidden], .ebt-page-num[hidden] { display: none; }

/* ===== EPUB Metadata Editor (eme-), EPUB Validator (ev-), Send to Kindle guide (stk-) - 2026-10-12 ===== */
.eme-facts { text-align: center; margin: 0 0 12px; }
.eme-grid { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 18px; align-items: start; }
.eme-cover-card { text-align: center; position: sticky; top: 16px; }
.eme-cover { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; min-height: 300px; border-radius: 8px; background: var(--ebt-bg-mute); color: var(--ebt-muted); overflow: hidden; }
.eme-cover img { display: block; max-width: 100%; max-height: 340px; box-shadow: 0 4px 14px rgba(0,0,0,.2); }
.ebt-wrap .eme-cover svg.lucide { width: 40px; height: 40px; }
.eme-cover-card .ebt-file-btn { justify-content: center; margin: 10px 0 4px; }
.eme-desc { resize: vertical; min-height: 110px; line-height: 1.5; }
.eme-other { margin-top: 12px; }
#emeDone { margin-top: 18px; }

.ev-progress { display: flex; gap: 12px; align-items: center; justify-content: center; max-width: 900px; margin: 20px auto; color: var(--ebt-muted); }
.ev-progress .ebt-spinner { width: 28px; height: 28px; margin: 0; border-width: 3px; }
.ev-report { max-width: 1000px; margin: 20px auto 0; }
.ev-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 10px; }
.ev-head h3 { display: flex; gap: 8px; align-items: center; margin: 0; font-size: 1.15rem; }
.ev-bad { color: var(--ebt-danger); } .ev-warn { color: var(--ebt-warn); } .ev-good { color: #339966; }
[data-theme="dark"] .ev-good { color: #4cc38a; }
.ev-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.ev-list li { display: flex; gap: 10px; align-items: flex-start; padding: 9px 12px; border-radius: 8px; background: var(--ebt-bg-soft); line-height: 1.5; font-size: .93rem; }
.ev-list li > svg.lucide { margin-top: 3px; }
.ev-list li.ev-error > svg.lucide { color: var(--ebt-danger); }
.ev-list li.ev-warn > svg.lucide { color: var(--ebt-warn); }
.ev-list li.ev-info > svg.lucide { color: var(--ebt-primary); }
.ev-list code, .stk-table code, .ebt-card code { font-size: .86em; background: var(--ebt-bg-mute); padding: 1px 5px; border-radius: 4px; word-break: break-all; }
.ev-fixtag { display: inline-block; font-size: .72rem; font-weight: 700; padding: 1px 7px; border-radius: 99px; background: var(--ebt-primary-light); color: var(--ebt-primary); margin-left: 4px; }
.ev-fixbox, .ev-deep { margin-top: 16px; padding: 14px 16px; border: 1px solid var(--ebt-border); border-radius: 10px; }
.ev-fixbox h4, .ev-deep h4 { display: flex; gap: 8px; align-items: center; margin: 0 0 10px; color: var(--ebt-primary); }
.ev-fixlist { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 0 14px; }
.ev-lang { max-width: 260px; margin-bottom: 10px; }
.ev-fixed { display: flex; gap: 8px; align-items: flex-start; color: #2b8159; font-size: .92rem; }
[data-theme="dark"] .ev-fixed { color: #4cc38a; }
.ev-deep .ebt-btn { margin-top: 4px; }
.ev-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 14px; }

.stk-toc ol { margin: 0; padding-left: 20px; line-height: 1.9; columns: 2; }
.stk-table { width: 100%; border-collapse: collapse; margin: 10px 0; font-size: .93rem; }
.stk-table th, .stk-table td { border: 1px solid var(--ebt-border); padding: 8px 10px; text-align: left; vertical-align: top; color: var(--ebt-text-2); }
.stk-table th { background: var(--ebt-bg-mute); color: var(--ebt-text); }
.ebt-card ul { line-height: 1.7; color: var(--ebt-text-2); padding-left: 20px; }
.ebt-wrap > .ebt-card { max-width: 1000px; margin: 18px auto 0; }

@media (max-width: 820px) {
    .eme-grid { grid-template-columns: 1fr; }
    .eme-cover-card { position: static; }
    .stk-toc ol { columns: 1; }
}