:root{--ui-bg:#f6faf9;--ui-card:#ffffff;--ui-soft:#4b6365;--ui-text:#102a2c;--ui-border:rgba(148,163,184,.25);--ui-shadow:0 12px 28px rgba(15,23,42,.06);--ui-shadow-2:0 16px 44px rgba(15,23,42,.08);--ui-accent1:#0b6e75;--ui-accent2:#0e7c86;--ui-accent-grad:linear-gradient(90deg,#0b6e75,#0e7c86);--ui-chip:#f6faf9}
.hero{max-width:1200px;margin:0 auto}
.top-row{max-width:1200px;margin:0 auto 18px;display:grid;grid-template-columns:1.08fr .92fr;gap:16px}
.info-card,.upload-card,.toolbar-card,.summary-card,.page-card{border:1px solid var(--ui-border);background:rgba(255,255,255,.78);border-radius:26px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--ui-shadow)}
.info-card{padding:24px;display:flex;flex-direction:column;justify-content:center}
.info-title{margin:0 0 10px;font-size:1.22rem;color:var(--ui-text)}
.info-text{margin:0;color:var(--ui-soft);line-height:1.78}
.info-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.info-tags span{padding:9px 13px;border-radius:999px;border:1px solid var(--ui-border);background:rgba(255,255,255,.72);color:var(--ui-text);font-size:.8rem;font-weight:700}
.upload-card{padding:18px}
.upload-inner{min-height:245px;border:1.6px dashed rgba(99,102,241,.34);border-radius:22px;display:flex;align-items:center;justify-content:center;text-align:center;padding:28px 18px;flex-direction:column;gap:10px;background:radial-gradient(circle at top left, rgba(37,99,235,.12), transparent 36%),
    radial-gradient(circle at bottom right, rgba(124,58,237,.10), transparent 40%),
    linear-gradient(180deg, rgba(255,255,255,.95), rgba(248,250,252,.92));transition:border-color .25s ease, transform .18s ease, box-shadow .25s ease}
.upload-inner.dragover{border-color:rgba(99,102,241,.7);box-shadow:0 0 0 4px rgba(99,102,241,.11), 0 24px 50px rgba(37,99,235,.10);transform:translateY(-2px)}
.upload-icon{width:76px;height:76px;display:grid;place-items:center;border-radius:24px;font-size:2rem;border:1px solid rgba(37,99,235,.12);background:linear-gradient(135deg, rgba(37,99,235,.14), rgba(124,58,237,.12));box-shadow:0 16px 30px rgba(37,99,235,.08)}
.upload-inner h2{margin:4px 0 0;font-size:1.34rem;color:var(--ui-text)}
.upload-inner p{margin:0;color:var(--ui-soft)}
.upload-note{display:inline-flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:6px;color:var(--ui-soft);font-size:.82rem}
.toolbar-wrap{max-width:1200px;margin:0 auto 18px}
.toolbar-card{padding:18px;position:sticky;top:72px;z-index:40}
.toolbar-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.toolbar-title{display:flex;flex-direction:column;gap:4px}
.toolbar-title h3{margin:0;color:var(--ui-text);font-size:1.08rem}
.toolbar-title p{margin:0;color:var(--ui-soft);font-size:.82rem}
.toolbar-grid{display:grid;grid-template-columns:1.2fr .9fr .9fr 1fr 1fr;gap:10px}
.toolbar-field{display:flex;flex-direction:column;gap:6px}
.toolbar-field label{font-size:.77rem;font-weight:800;color:var(--ui-text)}
.toolbar-field input,.toolbar-field select{width:100%;min-height:46px;border-radius:15px;border:1px solid var(--ui-border);background:#fff;color:var(--ui-text);padding:11px 13px;font-size:.9rem;outline:none;transition:border-color .18s ease, box-shadow .18s ease, transform .18s ease}
.toolbar-field input:focus,.toolbar-field select:focus{border-color:var(--ui-accent1);box-shadow:0 0 0 3px rgba(37,99,235,.11)}
.toolbar-extra{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
.slider-wrap{display:flex;align-items:center;gap:10px;min-height:46px;border-radius:15px;border:1px solid var(--ui-border);background:#fff;padding:0 14px}
.slider-wrap input[type="range"]{flex:1;accent-color:#0b6e75}
.slider-value{min-width:52px;text-align:right;font-size:.86rem;font-weight:800;color:var(--ui-text)}
.toolbar-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;padding-top:14px;border-top:1px solid rgba(148,163,184,.18)}
.toolbar-actions .btn-primary,.toolbar-actions .btn-outline,.toolbar-actions .btn-ghost{min-height:46px}
.progress-row{width:100%;display:flex;align-items:center;gap:12px;margin-top:14px;padding-top:14px;border-top:1px solid rgba(148,163,184,.18)}
.progress-bar{flex:1;height:8px;border-radius:999px;overflow:hidden;background:rgba(148,163,184,.18)}
.progress-bar > div{width:0%;height:100%;background:var(--ui-accent-grad);transition:width .22s ease}
#progressText{min-width:180px;text-align:right;color:var(--ui-soft);font-size:.79rem}
.summary-wrap{max-width:1200px;margin:0 auto 18px;display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.summary-card{padding:16px}
.summary-card small{display:block;margin-bottom:6px;color:var(--ui-soft);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase}
.summary-card strong{display:block;color:var(--ui-text);font-size:1.08rem}
.workspace{max-width:1200px;margin:0 auto 42px}
.pages-shell{border:1px solid var(--ui-border);background:rgba(255,255,255,.78);border-radius:26px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--ui-shadow-2);padding:18px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.panel-head-left{display:flex;flex-direction:column;gap:4px}
.panel-head-left h3{margin:0;color:var(--ui-text);font-size:1.08rem}
.panel-head-left p{margin:0;color:var(--ui-soft);font-size:.82rem}
.panel-head-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.inline-status{display:inline-flex;align-items:center;gap:8px;padding:9px 12px;border-radius:999px;border:1px solid var(--ui-border);background:#fff;color:var(--ui-text);font-size:.78rem;font-weight:700}
.pages-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.empty-state{text-align:center;padding:64px 22px;border:1px dashed rgba(148,163,184,.28);border-radius:22px;color:var(--ui-soft);background:linear-gradient(180deg, rgba(255,255,255,.78), rgba(248,250,252,.9))}
.page-card{overflow:hidden;border-radius:24px;background:#fff;border:1px solid rgba(148,163,184,.2);box-shadow:0 10px 24px rgba(15,23,42,.05);transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease}
.page-card:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(15,23,42,.08);border-color:rgba(99,102,241,.28)}
.page-card.selected{border-color:rgba(37,99,235,.35);box-shadow:0 18px 36px rgba(37,99,235,.10)}
.page-thumb-wrap{position:relative;padding:16px 16px 14px;background:linear-gradient(180deg, rgba(238,242,255,.75), rgba(248,250,252,.96));border-bottom:1px solid rgba(148,163,184,.14)}
.page-number{position:absolute;top:12px;left:12px;min-width:38px;height:38px;border-radius:999px;display:grid;place-items:center;font-size:.82rem;font-weight:900;color:var(--ui-text);background:rgba(255,255,255,.95);border:1px solid rgba(255,255,255,.9);box-shadow:0 10px 20px rgba(2,6,23,.08);z-index:2}
.page-select{position:absolute;top:12px;right:12px;display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(15,23,42,.62);color:#fff;border:1px solid rgba(255,255,255,.12);font-size:.74rem;font-weight:800;z-index:2;backdrop-filter:blur(10px)}
.page-select input{width:16px;height:16px;accent-color:#0b6e75}
.page-preview-frame{width:100%;aspect-ratio:1 / 1.32;border-radius:18px;background:linear-gradient(180deg,#fff,#f6faf9);display:flex;align-items:center;justify-content:center;box-shadow:inset 0 0 0 1px rgba(148,163,184,.16),
    0 14px 28px rgba(15,23,42,.07);overflow:hidden}
.page-preview-inner{width:86%;height:88%;border-radius:16px;background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden;box-shadow:0 8px 20px rgba(15,23,42,.08)}
.page-preview-inner canvas,.page-preview-inner img{max-width:100%;max-height:100%;display:block}
.page-body{padding:14px 14px 15px;display:flex;flex-direction:column;gap:12px}
.page-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.page-title{margin:0;color:var(--ui-text);font-size:1rem;font-weight:900}
.page-badge{padding:6px 10px;border-radius:999px;background:#f6faf9;border:1px solid rgba(148,163,184,.18);color:var(--ui-soft);font-size:.72rem;font-weight:800}
.page-meta-line{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;border-radius:15px;border:1px solid rgba(148,163,184,.16);background:#fafcff}
.page-meta-item{display:flex;flex-direction:column;gap:3px}
.page-meta-item small{color:var(--ui-soft);font-size:.68rem;text-transform:uppercase;letter-spacing:.06em}
.page-meta-item strong{color:var(--ui-text);font-size:.83rem}
.page-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.page-card.hidden-by-filter{display:none}
@media (max-width:1180px){
.toolbar-grid{grid-template-columns:repeat(3,minmax(150px,1fr))}
.summary-wrap{grid-template-columns:repeat(3,1fr)}
.pages-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:920px){
.top-row{grid-template-columns:1fr}
.toolbar-card{top:64px}
.pages-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:680px){
.toolbar-card{position:relative !important;top:auto !important}
.toolbar-grid,.toolbar-extra{grid-template-columns:1fr}
.toolbar-actions{display:grid;grid-template-columns:1fr}
.toolbar-actions button{width:100%}
.progress-row{flex-direction:column;align-items:stretch}
#progressText{min-width:auto;text-align:left}
.summary-wrap{grid-template-columns:1fr 1fr}
.pages-grid{grid-template-columns:1fr}
}
@media (max-width:460px){
.summary-wrap{grid-template-columns:1fr}
}

/* page overrides */
/* Soft & clear (shared look with JPG to PDF) */
/* Soft & clear: flat panels, tokens, dark mode */
.tool-app .top-row{margin-bottom:16px}
.tool-app .upload-inner{min-height:210px;background:var(--zl-surface-2)}
.tool-app .upload-inner p{color:var(--zl-muted)}
.tool-app .toolbar-wrap{margin-bottom:16px}
.tool-app .toolbar-card{position:static;padding:18px;border-radius:var(--zl-r)}
.tool-app .toolbar-title p,.tool-app .panel-head-left p{color:var(--zl-muted);font-size:14px}
.tool-app .toolbar-field label{font:500 14px var(--zl-font-head);color:var(--zl-ink)}
.tool-app .toolbar-field input,.tool-app .toolbar-field select{min-height:46px;border-radius:12px}
.tool-app .slider-wrap,.tool-app .color-row{background:var(--zl-surface);border:1.5px solid var(--zl-line-2);border-radius:12px}
.tool-app .slider-value{color:var(--zl-ink);font-weight:600}
.tool-app .color-row code{background:var(--zl-surface-2);border-color:var(--zl-line);color:var(--zl-muted)}
.tool-app .color-row span{color:var(--zl-muted);font-size:14px}
.tool-app .toolbar-actions,.tool-app .progress-row{border-top-color:var(--zl-line)}
.tool-app #progressText{color:var(--zl-muted);font-size:14px}
.tool-app .inline-status{background:var(--zl-surface-2);border:1px solid var(--zl-line);font-weight:500}
.tool-app .summary-wrap{display:none}
.tool-app .workspace{margin-bottom:0}
.tool-app .pages-shell{background:var(--zl-surface);border:1px solid var(--zl-line);border-radius:var(--zl-r);box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none}
.tool-app .page-card{background:var(--zl-surface);border:1px solid var(--zl-line);border-radius:16px;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none}
.tool-app .page-card:hover{transform:none;box-shadow:none;border-color:var(--zl-line-2)}
.tool-app .page-card.selected{border-color:var(--zl-accent);box-shadow:none}
.tool-app .page-card:not(.selected) .page-preview-frame{opacity:.45}
.tool-app .page-card.hidden-by-filter{display:none}
.tool-app .page-thumb-wrap{background:var(--zl-surface-2);border-bottom:1px solid var(--zl-line)}
.tool-app .page-number{background:var(--zl-surface);border:1px solid var(--zl-line);box-shadow:none;color:var(--zl-ink);font-family:var(--zl-font-head);font-weight:600}
.tool-app .page-select{background:var(--zl-surface);color:var(--zl-ink);border:1px solid var(--zl-line);backdrop-filter:none;font:500 13px var(--zl-font-head);min-height:36px;cursor:pointer}
.tool-app .page-select input{width:18px;height:18px}
.tool-app .page-preview-frame{background:var(--zl-surface);box-shadow:inset 0 0 0 1px var(--zl-line)}
.tool-app .page-preview-inner{background:transparent;box-shadow:none;border-radius:8px}
.tool-app .page-title{font:600 15px var(--zl-font-head);color:var(--zl-ink)}
.tool-app .page-badge{background:var(--zl-tint);color:var(--zl-accent-strong);border:0;font-family:var(--zl-font-head);font-weight:500}
.tool-app .page-meta-line{background:var(--zl-surface-2);border-color:var(--zl-line)}
.tool-app .page-meta-item small{color:var(--zl-muted)}
.tool-app .page-meta-item strong{color:var(--zl-ink)}
.tool-app .page-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.tool-app .page-actions button{min-height:44px;padding:0 8px}
.tool-app .empty-state{padding:40px 20px}
@media (max-width:680px){
  .tool-app .toolbar-actions{grid-template-columns:1fr 1fr}
  .tool-app .toolbar-actions #convertBtn{grid-column:1/-1}
  .tool-app .toolbar-actions button{white-space:normal}
  .tool-app .pages-grid{grid-template-columns:1fr 1fr;gap:10px}
  .tool-app .page-thumb-wrap{padding:10px}
  .tool-app .page-body{padding:10px;gap:8px}
  .tool-app .page-meta-line{display:none}
  .tool-app .pages-shell{padding:12px}
}
@media (max-width:360px){.tool-app .pages-grid{grid-template-columns:1fr}}

.tool-app .upload-icon{box-shadow:none;border:0}
.tool-app .thumb-msg{color:#4b6365;font:500 14px var(--zl-font-head);text-align:center;padding:14px}
.tool-app .page-preview-inner canvas{max-width:100%;max-height:100%;display:block;box-shadow:0 0 0 1px var(--zl-line)}
.tool-app .slider-wrap input[type=range]{padding:0;border:0;min-height:0;box-shadow:none}
.tool-app #pageRangeInput[aria-invalid="true"]{border-color:var(--zl-danger)}
.tool-app .page-meta-line{display:none}
.tool-app .toolbar-field select,.tool-app .toolbar-field input[type=text],.tool-app .toolbar-field input[type=number]{background-color:var(--zl-surface);color:var(--zl-ink);border:1.5px solid var(--zl-line-2)}
@media (max-width:680px){
  .tool-app .page-select{padding:6px 10px;min-height:40px}
  .tool-app .page-select span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
}
.tool-app .page-actions [data-action="toggle-page"]{display:none}
.tool-app .page-actions{grid-template-columns:1fr}
@media (max-width:680px){
  .tool-app .toolbar-grid,.tool-app .toolbar-extra{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .tool-app .toolbar-field{min-width:0}
  .tool-app .toolbar-field select{text-overflow:ellipsis}
  .tool-app .color-row code{display:none}
  .tool-app .toolbar-grid > .toolbar-field:first-child,.tool-app .toolbar-extra > .toolbar-field:first-child{grid-column:1/-1}
}
.tool-app .toolbar-field input[type=number]{width:100%;font-size:16px;padding:0 12px}
@media (max-width:680px){.tool-app .toolbar-extra .toolbar-field:has(.slider-wrap),.tool-app .toolbar-extra .toolbar-field:has(.color-row){grid-column:1/-1}}