:root{--panel:rgba(255,255,255,.05);--panel2:rgba(255,255,255,.035);--input:rgba(255,255,255,.04);--work-bg:#eef2f7;--work-card:#ffffff;--work-line:#d8e1eb;--work-soft:#4b6365;--work-text:#102a2c;--work-chip:#f6faf9;--work-shadow:0 12px 28px rgba(15,23,42,.08);--radius-xl:26px;--radius-md:16px}
.tool-app *{box-sizing:border-box}
.hero{max-width:1360px;margin:0 auto;padding:34px 20px 14px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.05);color:#0b6e75;font-size:.82rem;font-weight:800;margin-bottom:14px}
.hero h1{margin:0 0 10px;font-size:clamp(2rem,3vw,3rem);line-height:1.04;font-weight:900;letter-spacing:-.03em;-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero p{margin:0;max-width:940px;color:var(--soft);line-height:1.8;font-size:1rem}
.top-grid{max-width:1360px;margin:0 auto 16px;padding:0 20px;display:grid;grid-template-columns:1.02fr .98fr;gap:16px}
.glass-card{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-xl);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow)}
.info-card{padding:22px}
.info-card h2{margin:0 0 10px;font-size:1.14rem}
.info-card p{margin:0;color:var(--soft);line-height:1.75}
.feature-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.feature-pills span{padding:8px 12px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);font-size:.78rem;font-weight:800}
.upload-card{padding:18px}
.upload-zone{min-height:232px;border:1.5px dashed rgba(99,102,241,.36);border-radius:22px;display:flex;align-items:center;justify-content:center;text-align:center;padding:26px 18px;flex-direction:column;gap:10px;background:radial-gradient(circle at top left, rgba(37,99,235,.14), transparent 34%),
    radial-gradient(circle at bottom right, rgba(124,58,237,.12), transparent 36%),
    linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));transition:border-color .2s ease, transform .18s ease, box-shadow .2s ease}
.upload-zone.dragover{border-color:rgba(99,102,241,.78);box-shadow:0 0 0 4px rgba(99,102,241,.12), 0 20px 40px rgba(37,99,235,.14);transform:translateY(-2px)}
.upload-icon{width:74px;height:74px;border-radius:22px;display:grid;place-items:center;font-size:2rem;border:1px solid var(--line);background:linear-gradient(135deg, rgba(37,99,235,.16), rgba(124,58,237,.16))}
.upload-zone h2{margin:2px 0 0;font-size:1.22rem}
.upload-zone p{margin:0;color:var(--soft);line-height:1.7}
.upload-note{margin-top:4px;color:var(--soft);font-size:.82rem}
.btn-primary,.btn-outline,.btn-soft,.btn-tab{border:none;cursor:pointer;transition:.18s ease;font-weight:800;font-family:inherit}
.btn-primary{min-height:48px;padding:0 18px;border-radius:14px;color:#fff;background:linear-gradient(90deg,var(--accent1),var(--accent2));box-shadow:0 12px 26px rgba(37,99,235,.18)}
.btn-primary:hover{transform:translateY(-1px)}
.btn-outline{min-height:44px;padding:0 15px;border-radius:14px;color:var(--text);border:1px solid var(--line);background:rgba(255,255,255,.04)}
.btn-soft{min-height:40px;padding:0 14px;border-radius:12px;color:var(--work-text);border:1px solid var(--work-line);background:#fff}
.btn-tab{min-height:44px;padding:0 16px;border-radius:14px;color:#dbe7ff;border:1px solid var(--line);background:rgba(255,255,255,.04)}
.btn-tab.active{color:#fff;border-color:rgba(96,165,250,.55);background:linear-gradient(90deg, rgba(37,99,235,.22), rgba(124,58,237,.22));box-shadow:0 0 0 3px rgba(37,99,235,.10)}
.btn-outline:hover,.btn-soft:hover,.btn-tab:hover{transform:translateY(-1px)}
.toolbar-wrap{max-width:1360px;margin:0 auto 16px;padding:0 20px}
.toolbar-card{padding:14px;position:sticky;top:74px;z-index:30}
.toolbar-top{display:flex;gap:14px;justify-content:space-between;align-items:flex-start;flex-wrap:wrap}
.toolbar-left,.toolbar-right{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.field{display:flex;flex-direction:column;gap:6px;min-width:220px}
.field.small{min-width:160px}
.field.medium{min-width:190px}
.field.large{min-width:260px}
.field label{font-size:.76rem;font-weight:800}
.field input,.field select,.field textarea{width:100%;min-height:44px;border-radius:14px;border:1px solid var(--line);background:var(--input);color:var(--text);padding:11px 12px;font-size:.9rem;outline:none}
.field textarea{min-height:92px;resize:vertical}
.field input[type="color"]{padding:6px;min-width:70px}
.field input[type="range"]{padding:0;min-height:auto;accent-color:#0b6e75}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent1);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.tool-actions{display:flex;flex-wrap:wrap;gap:10px;padding:10px;border-radius:18px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06)}
.toolbar-bottom{margin-top:12px;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.toolbar-note{color:var(--soft);font-size:.8rem;line-height:1.7}
.progress-row{width:100%;display:flex;align-items:center;gap:12px}
.progress-bar{flex:1;height:8px;border-radius:999px;overflow:hidden;background:rgba(148,163,184,.2)}
.progress-bar > div{width:0%;height:100%;background:linear-gradient(90deg,var(--accent1),var(--accent2));transition:width .22s ease}
#progressText{min-width:190px;text-align:right;color:var(--soft);font-size:.78rem}
.controls-grid{max-width:1360px;margin:0 auto 16px;padding:0 20px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.control-card{border:1px solid var(--line);background:var(--panel);border-radius:20px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);padding:15px 16px}
.control-card h3{margin:0 0 12px;font-size:.98rem}
.control-card .field{min-width:auto}
.inline-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.tab-row{display:flex;gap:10px;flex-wrap:wrap}
.hidden{display:none !important}
.stats{max-width:1360px;margin:0 auto 16px;padding:0 20px;display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.stat-card{border:1px solid var(--line);background:var(--panel);border-radius:20px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);padding:15px 16px}
.stat-card small{display:block;margin-bottom:6px;color:var(--soft);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase}
.stat-card strong{display:block;font-size:1.03rem}
.workspace{max-width:1360px;margin:0 auto 40px;padding:0 20px}
.workspace-shell{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-xl);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);padding:16px}
.workspace-board{border-radius:24px;background:var(--work-bg);border:1px solid #d7dee9;padding:14px}
.workspace-top{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.workspace-top h3{margin:0;color:var(--work-text);font-size:1.08rem}
.workspace-top p{margin:4px 0 0;color:var(--work-soft);font-size:.84rem}
.top-chips{display:flex;gap:8px;flex-wrap:wrap}
.top-chips span{padding:8px 12px;border-radius:999px;background:#fff;color:var(--work-soft);border:1px solid var(--work-line);font-size:.78rem;font-weight:700}
.pages-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;align-items:start}
.page-card{width:100%;background:var(--work-card);border:1px solid var(--work-line);border-radius:18px;padding:10px;box-shadow:var(--work-shadow)}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}
.page-no{color:#3f5a5c;font-size:.82rem;font-weight:800}
.tag{padding:5px 9px;border-radius:999px;font-size:.72rem;font-weight:800;border:1px solid var(--work-line);background:#fff;color:#3f5a5c}
.thumb-shell{border-radius:14px;background:#f6faf9;border:1px solid #e4ebf3;padding:10px}
.thumb-box{width:100%;height:260px;border-radius:12px;overflow:hidden;border:1px solid #e7edf4;background:linear-gradient(45deg,#f6faf9 25%,#eef2f7 25%,#eef2f7 50%,#f6faf9 50%,#f6faf9 75%,#eef2f7 75%,#eef2f7 100%);background-size:18px 18px;display:flex;align-items:center;justify-content:center;position:relative}
.thumb-box img.page-preview{max-width:100%;max-height:100%;display:block}
.preview-layer{position:absolute;inset:0;pointer-events:none}
.preview-text-watermark{position:absolute;left:50%;top:50%;transform-origin:center center;white-space:nowrap;font-weight:900;letter-spacing:.04em;user-select:none}
.preview-image-watermark{position:absolute;left:50%;top:50%;transform-origin:center center;user-select:none;display:block;object-fit:contain}
.page-meta{margin-top:10px}
.page-name{display:block;width:100%;padding:10px 12px;border-radius:12px;border:1px solid var(--work-line);background:#fff;color:var(--work-text);font-size:.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.page-sub{display:flex;justify-content:space-between;gap:8px;margin-top:8px;color:var(--work-soft);font-size:.74rem}
.empty-state{min-height:360px;border:1px dashed #c6d4d2;border-radius:22px;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;gap:10px;background:linear-gradient(180deg,#f6faf9,#eef2f1);grid-column:1/-1}
.empty-state .big{font-size:2.3rem}
.empty-state h3{margin:0;font-size:1.15rem;color:var(--work-text)}
.empty-state p{margin:0;color:var(--work-soft);max-width:560px;line-height:1.75;padding:0 16px}
.bottom-bar{margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:14px 16px;border:1px solid var(--work-line);border-radius:18px;background:#fff}
.bottom-summary{display:flex;flex-wrap:wrap;gap:10px;color:var(--work-soft);font-size:.86rem}
.bottom-summary span{padding:7px 11px;border-radius:999px;border:1px solid var(--work-line);background:#f6faf9}
.bottom-actions{display:flex;gap:10px;flex-wrap:wrap}
.toast{position:fixed;right:18px;bottom:18px;z-index:140;display:flex;flex-direction:column;gap:10px;pointer-events:none}
.toast-item{min-width:260px;max-width:360px;background:rgba(15,23,42,.92);color:#fff;border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:12px 14px;box-shadow:0 18px 40px rgba(2,6,23,.25);transform:translateY(10px);opacity:0;animation:toastIn .22s ease forwards;font-size:.9rem}
@keyframes toastIn{
  to{transform:translateY(0);opacity:1}
}
@media (max-width:1200px){
.pages-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.controls-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:980px){
.top-grid{grid-template-columns:1fr}
.stats{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:760px){
.toolbar-card{position:relative;top:auto}
.toolbar-top{flex-direction:column;align-items:stretch}
.toolbar-left,.toolbar-right{width:100%}
}
@media (max-width:560px){
.stats{grid-template-columns:repeat(2,1fr)}
.controls-grid{grid-template-columns:1fr}
.pages-grid{grid-template-columns:1fr}
.thumb-box{height:300px}
}
@media (max-width:420px){
.stats{grid-template-columns:1fr}
.inline-grid{grid-template-columns:1fr}
}

/* page overrides */
/* Shared look for the page-preview PDF tools (watermark, page numbers). */
.tool-app{--soft:var(--zl-muted);--panel:var(--zl-surface);--input:var(--zl-surface);--work-bg:var(--zl-surface-2);--work-card:var(--zl-surface);--work-line:var(--zl-line);--work-soft:var(--zl-muted);--work-text:var(--zl-ink);--work-chip:var(--zl-surface-2);--work-shadow:none}
.tool-app .top-grid,.tool-app .toolbar-wrap,.tool-app .controls-grid,.tool-app .stats,.tool-app .workspace{padding-left:0;padding-right:0;max-width:none}
.tool-app .control-card,.tool-app .stat-card,.tool-app .toolbar-card{background:var(--zl-surface);border:1px solid var(--zl-line);border-radius:16px;backdrop-filter:none;-webkit-backdrop-filter:none;box-shadow:none}
.tool-app .control-card .zl-ui-title{margin:0 0 12px}
.tool-app .stat-card small{color:var(--zl-muted);font-size:12.5px;letter-spacing:.04em}
.tool-app .stat-card strong{color:var(--zl-ink);font:600 18px var(--zl-font-head)}
.tool-app .toolbar-note,.tool-app #progressText{color:var(--zl-muted);font-size:14px}
.tool-app .tool-actions{background:transparent;border:0;padding:0;gap:8px}
.tool-app .field label,.tool-app .field .field-label{font:600 14px var(--zl-font-head);color:var(--zl-ink)}
.tool-app .field input:not([type=range]):not([type=color]),.tool-app .field select,.tool-app .field textarea{border-radius:12px;border:1.5px solid var(--zl-line-2);background:var(--zl-surface);color:var(--zl-ink);font-size:16px}
.tool-app .field textarea{font-family:var(--zl-font-body)}
.tool-app .field input[type=color]{min-height:44px;border-radius:12px;border:1.5px solid var(--zl-line-2);background:var(--zl-surface)}
.tool-app .field input:disabled,.tool-app .field select:disabled{opacity:.55;cursor:not-allowed}
.tool-app .field-hint{margin:6px 0 0;color:var(--zl-muted);font-size:13.5px;line-height:1.4}
.tool-app .field-error{margin:6px 0 0;color:var(--zl-danger);font-size:14px;line-height:1.4}
.tool-app .field-error[hidden],.tool-app .enc-warn[hidden]{display:none}
.tool-app .enc-warn{margin:10px 0 0;padding:10px 14px;border-radius:12px;background:var(--zl-warning-soft);color:var(--zl-note-ink);font-size:14.5px;line-height:1.5}
.tool-app .image-name-box{min-height:44px;display:flex;align-items:center;padding:10px 12px;border:1.5px solid var(--zl-line-2);border-radius:12px;background:var(--zl-surface-2);color:var(--zl-muted);font-size:15px;overflow-wrap:anywhere}
.tool-app .btn-soft{min-height:42px;padding:0 16px;border-radius:999px;border:1.5px solid var(--zl-line-2);background:var(--zl-surface);color:var(--zl-ink);font:500 14.5px var(--zl-font-head)}
.tool-app .btn-soft:hover{border-color:var(--zl-accent);transform:none}
.tool-app .btn-tab{min-height:44px;padding:0 16px;border-radius:999px;border:1.5px solid var(--zl-line-2);background:var(--zl-surface);color:var(--zl-ink);font:500 14.5px var(--zl-font-head);box-shadow:none}
.tool-app .btn-tab:hover{transform:none;border-color:var(--zl-accent)}
.tool-app .btn-tab.active{background:var(--zl-tint);color:var(--zl-accent-strong);border-color:var(--zl-accent);box-shadow:none}
.tool-app .workspace-board{border-color:var(--zl-line)}
.tool-app .top-chips span,.tool-app .page-name,.tool-app .bottom-bar,.tool-app .bottom-summary span{background:var(--zl-surface);color:var(--zl-ink);border-color:var(--zl-line)}
.tool-app .page-card{box-shadow:none}
.tool-app .page-no{color:var(--zl-ink)}
.tool-app .tag{background:var(--zl-tint);color:var(--zl-accent-strong);border:0;font-family:var(--zl-font-head);font-weight:500}
.tool-app .thumb-shell{background:var(--zl-surface-2);border-color:var(--zl-line)}
.tool-app .thumb-box{background:var(--zl-surface-2);border-color:var(--zl-line);position:relative;display:flex;align-items:center;justify-content:center}
.tool-app .thumb-frame{position:relative;max-height:100%;background:#fff;box-shadow:0 0 0 1px var(--zl-line)}
.tool-app .thumb-frame img,.tool-app .thumb-box .thumb-frame img.page-preview{display:block;width:100%;height:100%;max-width:none;max-height:none}
.tool-app .wm-svg,.tool-app .pn-svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:hidden}
.tool-app .wm-hint{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);padding:6px 12px;border-radius:999px;background:var(--zl-ink);color:var(--zl-surface);font-size:13px;white-space:nowrap}
.tool-app .thumb-fallback{color:var(--zl-muted);font-size:14px;padding:12px;text-align:center}
.tool-app .page-sub{font-size:13px}
.tool-app .empty-state{background:var(--zl-surface-2)}
.toast-item{background:var(--zl-ink);color:var(--zl-surface);border:0;border-radius:12px;box-shadow:var(--zl-shadow);font-family:var(--zl-font-body)}
@media (max-width:640px){.tool-app .btn-soft{min-height:44px}}
.tool-app .top-grid{grid-template-columns:1fr;max-width:none}
@media (max-width:640px){.tool-app .pages-grid{grid-template-columns:1fr 1fr;gap:10px}.tool-app .stats{grid-template-columns:1fr 1fr;gap:8px}.tool-app .thumb-box{height:210px}.tool-app .page-card{padding:8px}.tool-app .card-top{flex-wrap:wrap}}
/* 320px: fixed field minimums are wider than a small phone */
@media (max-width:480px){.tool-app .field,.tool-app .field.small,.tool-app .field.medium,.tool-app .field.large{min-width:0;max-width:100%}}