/* ======================================================================
   SENNA PDF Production Final
   Clean tool landing first. Full working studio only after upload.
   ====================================================================== */
:root{
  --bg:#f8fafc;
  --paper:#ffffff;
  --soft:#f1f5f9;
  --soft2:#fff7f2;
  --ink:#0f172a;
  --muted:#64748b;
  --line:#e2e8f0;
  --line2:#cbd5e1;
  --brand:#f0522c;
  --brand2:#f97316;
  --navy:#0b1220;
  --ok:#059669;
  --danger:#dc2626;
  --warn:#d97706;
  --shadow:0 18px 45px rgba(15,23,42,.08);
  --shadow-soft:0 8px 24px rgba(15,23,42,.06);
  --max:1400px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}.hidden{display:none!important}.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}.brand-orange{color:var(--brand)}
button,input,select{font:inherit}.btn,button{cursor:pointer}.btn:disabled,button:disabled{cursor:not-allowed;opacity:.5}
/* Header */
.v16-topbar,.header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.v16-nav-inner,.header-inner{height:62px;display:flex;align-items:center;justify-content:space-between;gap:18px}.v16-brand,.brand{display:flex;align-items:center;gap:12px}.v16-brand-mark,.brand-mark{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#ff764f,#ef3d2f);color:#fff;font-size:18px;font-weight:900;box-shadow:0 12px 26px rgba(239,61,47,.24)}.v16-brand-text,.brand-title{font-size:24px;font-weight:900;letter-spacing:-.04em}.v16-brand-text span,.brand-title span{color:var(--brand)}.brand-sub{font-size:11px;color:var(--muted);font-weight:800;margin-top:-2px}.v16-nav,.top-nav{display:flex;align-items:center;gap:4px;background:#f1f5f9;border:1px solid var(--line);border-radius:13px;padding:4px}.v16-nav a,.top-nav a{padding:8px 16px;border-radius:10px;font-size:13px;font-weight:900;color:#475569}.v16-nav a:hover,.top-nav a:hover,.v16-nav .nav-active,.top-nav .nav-active{background:#fff;color:var(--brand);box-shadow:0 4px 12px rgba(15,23,42,.05)}.header-actions{display:flex;align-items:center;gap:8px}.pill{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:999px;background:#fff;padding:7px 11px;font-size:12px;font-weight:900;color:#334155}.pill.ok{background:#ecfdf5;border-color:#bbf7d0;color:#047857}
/* Tool landing — visible before upload only */
.v16-landing{padding:60px 0;background:radial-gradient(circle at 20% 10%,rgba(249,115,22,.13),transparent 32%),linear-gradient(180deg,#fff 0,#f8fafc 100%)}.v16-landing-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(360px,.9fr);align-items:center;gap:48px}.v16-upload-card{position:relative;min-height:430px;border-radius:42px;background:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:44px;overflow:hidden;transition:transform .22s ease,box-shadow .22s ease}.v16-upload-card:hover{transform:translateY(-4px);box-shadow:0 24px 60px rgba(15,23,42,.11)}.v16-upload-glow{position:absolute;inset:-20%;background:radial-gradient(circle at 50% 45%,rgba(249,115,22,.14),transparent 45%);pointer-events:none}.v16-tool-icon{position:relative;width:86px;height:86px;border-radius:22px;background:#fff5ed;border:1px solid #ffddc6;display:grid;place-items:center;font-size:38px;margin-bottom:28px}.v16-upload-card h1{position:relative;margin:0 0 12px;font-size:clamp(34px,4vw,48px);line-height:1;letter-spacing:-.06em;font-weight:900}.v16-upload-card p{position:relative;margin:0 0 28px;color:var(--muted);font-size:16px;font-weight:700;line-height:1.6}.v16-upload-card kbd{background:#e2e8f0;border:1px solid #cbd5e1;border-radius:6px;padding:2px 6px;font-size:13px;color:#334155}.v16-select-btn{position:relative;border:0;border-radius:14px;background:var(--navy);color:#fff;padding:16px 42px;font-size:18px;font-weight:900;box-shadow:0 12px 24px rgba(15,23,42,.18);transition:.18s ease}.v16-select-btn:hover{background:#000;transform:translateY(-1px)}.v16-info-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:36px;box-shadow:0 18px 50px rgba(15,23,42,.07)}.v16-badge,.badge{display:inline-flex;border-radius:6px;background:#fff1e7;color:#c2410c;font-size:11px;font-weight:900;letter-spacing:.04em;text-transform:uppercase;padding:7px 9px;margin-bottom:16px}.v16-info-card h2{margin:0 0 16px;font-size:clamp(25px,2.4vw,34px);letter-spacing:-.045em;line-height:1.18}.v16-info-card p{margin:0 0 18px;color:#475569;font-size:16px;line-height:1.65;font-weight:600}.v16-info-card ul{margin:0;padding:18px 0 0;border-top:1px solid #f1f5f9;display:grid;gap:11px;list-style:none}.v16-info-card li{position:relative;padding-left:23px;color:#334155;font-size:14px;font-weight:800}.v16-info-card li:before{content:'✓';position:absolute;left:0;color:var(--ok)}
/* Show only landing before upload; show full studio after upload */
body.v16-tool.no-pages #studio{display:none!important}body.v16-tool.has-pages #toolLanding,body.v16-tool.is-processing #toolLanding{display:none!important}body.v16-tool.has-pages .v16-seo,body.v16-tool.is-processing .v16-seo{display:none!important}body.v16-tool.has-pages .footer,body.v16-tool.is-processing .footer{display:none!important}
/* Working studio */
.studio{margin:18px auto 34px}.v16-studio{max-width:none;padding:0 18px}.studio-shell,.v16-shell{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-soft)}.v16-brain-strip{display:flex;align-items:center;gap:10px;padding:12px 18px;background:#0b1220;color:#dbeafe;font-size:13px;font-weight:800}.v16-brain-strip b{color:#fff}.v16-workbar,.toolbar{display:flex;align-items:center;gap:9px;flex-wrap:wrap;padding:14px 18px;background:#fff;border-bottom:1px solid var(--line)}.toolbar-spacer{flex:1}.btn{border:1px solid var(--line2);border-radius:12px;background:#fff;color:#111827;padding:10px 15px;font-size:14px;font-weight:900;line-height:1;box-shadow:none}.btn:hover{border-color:#94a3b8;background:#f8fafc}.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));border-color:transparent;color:#fff}.btn.success{background:var(--ok);border-color:var(--ok);color:#fff}.btn.danger{background:#fff5f5;border-color:#fecaca;color:#b91c1c}.btn.ghost{background:#fff;color:#334155}.btn.light{background:#fff}.grid-select,.select,.input{border:1px solid var(--line2);background:#fff;border-radius:12px;color:#111827;padding:10px 36px 10px 12px;font-size:14px;font-weight:900;min-height:40px}.mode-controls{padding:0 18px;background:#fff}.controls-panel{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:12px 0;border-bottom:1px solid var(--line)}.controls-panel label{font-size:13px;color:#475569;font-weight:900}.workspace-head,.v16-workspace-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 22px;background:#fff;border-bottom:1px solid var(--line)}.workspace-head h2{margin:0 0 4px;font-size:24px;letter-spacing:-.035em}.workspace-head p{margin:0;color:#64748b;font-size:13px;font-weight:800}.count-pill{border:1px solid var(--line);border-radius:999px;background:#fff;padding:8px 14px;font-size:13px;font-weight:900;white-space:nowrap}.workspace-body,.v16-workspace-body{min-height:calc(100vh - 190px);max-height:calc(100vh - 190px);overflow:auto;background:#f8fafc;padding:20px}.drop-zone{min-height:340px;border:1.5px dashed var(--line2);border-radius:20px;background:#fff;display:grid;place-items:center;text-align:center;padding:34px}.drop-icon{width:68px;height:68px;border-radius:20px;background:#fff3e7;display:grid;place-items:center;font-size:32px;margin:0 auto 16px}.drop-zone h2{margin:0 0 10px;font-size:32px;letter-spacing:-.055em}.drop-zone p{margin:0 auto;color:#64748b;font-weight:800;line-height:1.55}.drop-tags{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:18px}.drop-tags span{border:1px solid var(--line);border-radius:999px;background:#fff;padding:7px 10px;font-size:12px;font-weight:900;color:#475569}.processing-center{min-height:340px;display:grid;place-items:center;text-align:center}.loader-ring{width:56px;height:56px;border-radius:999px;border:4px solid #ffeadf;border-top-color:var(--brand);animation:spin 1s linear infinite;margin:0 auto 16px}@keyframes spin{to{transform:rotate(360deg)}}.progress-track{height:9px;background:#e2e8f0;border-radius:999px;overflow:hidden;max-width:420px;margin:18px auto 0}.progress-bar{height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2));width:0;transition:width .2s}.page-grid{--card-size:190px;display:grid;grid-template-columns:repeat(auto-fill,minmax(var(--card-size),1fr));gap:14px}.page-card{position:relative;background:#fff;border:1px solid #dfe7f1;border-radius:16px;padding:10px;box-shadow:0 2px 8px rgba(15,23,42,.035);transition:.16s ease}.page-card:hover,.page-card.active{border-color:#fb923c;box-shadow:0 12px 26px rgba(15,23,42,.08)}.page-card.deleted{opacity:.45}.page-check{position:absolute;top:10px;left:10px;z-index:4;width:18px;height:18px}.warn-badge,.type-badge{position:absolute;top:10px;right:10px;z-index:4;border-radius:999px;background:#0f172a;color:#fff;padding:4px 7px;font-size:10px;font-weight:900}.warn-badge{right:auto;left:36px;background:#f59e0b}.warn-badge.danger{background:#dc2626}.page-thumb{height:calc(var(--card-size) * 1.25);background:#f1f5f9;border:1px solid #edf2f7;border-radius:12px;display:grid;place-items:center;overflow:hidden;cursor:zoom-in}.page-thumb img{max-width:100%;max-height:100%;object-fit:contain;transition:transform .15s}.page-name{font-size:12px;font-weight:900;color:#111827;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:9px}.page-meta{font-size:11px;color:#64748b;font-weight:800;margin-top:3px}.page-actions{display:flex;gap:6px;margin-top:8px}.icon-btn{border:1px solid var(--line);background:#fff;border-radius:9px;padding:6px 8px;font-size:12px;font-weight:900}.bottom-status{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 16px;background:#fff;border-top:1px solid var(--line)}.status-chip{border:1px solid var(--line);border-radius:999px;background:#fff;padding:6px 9px;font-size:12px;font-weight:800;color:#475569}.status-left{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.toast{position:fixed;right:20px;bottom:20px;z-index:200;background:#0f172a;color:#fff;border-radius:14px;padding:12px 16px;font-size:13px;font-weight:900;box-shadow:0 18px 50px rgba(15,23,42,.24)}.toast.warn{background:#92400e}.toast.danger{background:#991b1b}.toast.ok{background:#065f46}
/* Modals */
.modal{position:fixed;inset:0;z-index:120;background:rgba(15,23,42,.72);display:flex;align-items:center;justify-content:center;padding:24px}.modal-card{width:min(980px,100%);max-height:90vh;overflow:hidden;background:#fff;border-radius:22px;box-shadow:0 30px 80px rgba(0,0,0,.32);display:flex;flex-direction:column}.modal-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;padding:20px 24px;border-bottom:1px solid var(--line);background:#fff}.modal-head h2{margin:0 0 4px;font-size:24px;letter-spacing:-.04em}.modal-head p{margin:0;color:#64748b;font-weight:800;font-size:13px}.modal-close{border:1px solid var(--line);border-radius:999px;background:#fff;width:36px;height:36px;font-size:24px;line-height:1}.modal-body{padding:22px 24px;overflow:auto}.preview-wrap{background:#f1f5f9;text-align:center}.preview-wrap canvas,.preview-wrap img{max-width:100%;height:auto;border-radius:12px;box-shadow:0 10px 30px rgba(15,23,42,.18);background:#fff}.findings{display:grid;gap:10px}.finding{border:1px solid var(--line);border-radius:14px;background:#fff;padding:12px;display:flex;justify-content:space-between;gap:12px}.finding.danger{border-color:#fecaca;background:#fff7f7}.export-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.export-option{border:1px solid var(--line);border-radius:16px;background:#fff;padding:16px;display:flex;justify-content:space-between;gap:14px;align-items:center}.export-option h3{margin:0 0 4px}.export-desc{color:#64748b;font-weight:700;line-height:1.55}.export-size{font-weight:900;color:#111827}.custom-target{margin-top:16px;padding:16px;border:1px solid var(--line);border-radius:16px;background:#f8fafc}.thanks-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:18px}
/* Article SEO below landing only */
.v16-seo,.article{padding:42px 0 72px;background:#fff}.v16-article-wrap,.article-main{max-width:900px}.article article,.article-main{font-size:16px;line-height:1.8;color:#475569}.article h2,.v16-seo h2{font-size:34px;letter-spacing:-.055em;color:#0f172a;line-height:1.15}.article h3,.v16-seo h3{font-size:22px;color:#0f172a;margin-top:32px}.article ol{background:#f8fafc;border:1px solid var(--line);border-radius:18px;padding:18px 18px 18px 42px}.inline-links{display:flex;gap:9px;flex-wrap:wrap}.inline-links a{border:1px solid var(--line);border-radius:999px;background:#fff;padding:7px 11px;font-weight:900;color:#334155}
/* Hub / root */
.hero{padding:56px 0 36px;background:linear-gradient(180deg,#fff,#f8fafc)}.hero-content{text-align:center}.hero h1{font-size:clamp(42px,6vw,72px);line-height:.95;letter-spacing:-.075em;margin:8px 0 12px}.hero p{font-size:18px;color:#64748b;font-weight:700}.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:22px}.hub-section{padding:34px 24px}.hub-head{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:18px}.hub-head h2,.group-title{font-size:28px;letter-spacing:-.04em;margin:0}.hub-head p{margin:6px 0 0;color:#64748b;font-weight:700}.search-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:26px}.search-box{flex:1;min-width:260px;border:1px solid var(--line2);border-radius:14px;padding:13px 15px;font-weight:800}.filter-tabs{display:flex;gap:8px;flex-wrap:wrap}.filter-tab{border:1px solid var(--line);border-radius:999px;background:#fff;padding:10px 13px;font-size:13px;font-weight:900}.filter-tab.active{background:#0f172a;color:#fff}.tool-group{margin:28px 0}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}.tool-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;min-height:180px;box-shadow:0 3px 12px rgba(15,23,42,.04);transition:.18s ease;overflow:hidden}.tool-card:before{content:'';position:absolute;inset:0;background:linear-gradient(115deg,transparent 0%,rgba(249,115,22,.06) 45%,transparent 65%);transform:translateX(-100%);transition:.55s}.tool-card:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(15,23,42,.09);border-color:#fed7aa}.tool-card:hover:before{transform:translateX(100%)}.tool-icon{width:58px;height:58px;border-radius:18px;background:#f8fafc;border:1px solid #edf2f7;display:grid;place-items:center;font-size:28px;margin-bottom:16px}.tool-card h3{margin:0 0 8px;font-size:19px;letter-spacing:-.03em}.tool-card p{margin:0;color:#64748b;font-size:14px;line-height:1.55;font-weight:700}.tool-card.disabled{opacity:.72}.badge.live{background:#ecfdf5;color:#047857}.badge.trend{background:#fff1e7;color:#c2410c}.badge.plan{background:#eef2ff;color:#4338ca}.no-results{text-align:center;padding:30px;font-weight:900;color:#64748b}
/* Footer */
.footer{background:#0b1220;color:#cbd5e1;padding:32px 0}.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:13px}.footer b{color:#fff;font-size:18px}
.global-drop{position:fixed;inset:0;z-index:100;background:rgba(15,23,42,.86);display:grid;place-items:center;color:#fff;text-align:center}.global-drop h2{font-size:42px;margin:0}.global-drop p{color:#fed7aa;font-weight:800}.route-note{font-size:12px;color:#64748b}
@media(max-width:1050px){.v16-landing-grid{grid-template-columns:1fr;gap:24px}.v16-upload-card{min-height:360px}.workspace-body{min-height:480px;max-height:none}.export-grid{grid-template-columns:1fr}.v16-nav,.top-nav{display:none}.footer-inner{align-items:flex-start;flex-direction:column}}
@media(max-width:640px){.wrap{padding:0 16px}.v16-nav-inner,.header-inner{height:58px}.v16-brand-text,.brand-title{font-size:21px}.v16-brand-mark,.brand-mark{width:38px;height:38px}.v16-landing{padding:28px 0}.v16-upload-card{border-radius:26px;min-height:330px;padding:28px 18px}.v16-tool-icon{width:70px;height:70px;font-size:32px;margin-bottom:20px}.v16-upload-card h1{font-size:34px}.v16-info-card{border-radius:22px;padding:24px}.v16-workbar{padding:10px;gap:7px}.btn{font-size:13px;padding:9px 11px}.grid-select{min-width:144px}.workspace-head{padding:14px}.workspace-head h2{font-size:20px}.workspace-body{padding:10px;min-height:420px}.page-grid{--card-size:150px;gap:10px}.page-thumb{height:205px}.modal{padding:10px}.modal-card{border-radius:18px;max-height:94vh}.modal-head,.modal-body{padding:16px}.hero h1{font-size:40px}.hub-section{padding-left:16px;padding-right:16px}.search-row{display:block}.search-box{width:100%;margin-bottom:10px}.tool-grid{grid-template-columns:1fr}.v16-seo,.article{padding:28px 0 52px}.article h2,.v16-seo h2{font-size:28px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}