:root{--accent:#7c5cff;--ink:#18202f;--muted:#687184;--paper:#fff;--bg:#f5f3fa;--line:#e4dfed;--shadow:0 20px 60px rgba(38,28,66,.12)}

*{box-sizing:border-box}
body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;transition:.25s}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.hidden{display:none!important}

body[data-theme=sepia]{--ink:#342d25;--muted:#776a5c;--paper:#fffaf0;--bg:#f2e9d8;--line:#dfd1b8}
body[data-theme=dark]{--ink:#eef0f5;--muted:#a7aebe;--paper:#202431;--bg:#151821;--line:#393e4c}

.topbar{min-height:76px;padding:8px clamp(20px,5vw,72px);display:flex;align-items:center;justify-content:space-between;background:var(--paper);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px}
.brand>img{width:88px;height:54px;object-fit:contain}
.brand small{display:block;color:var(--muted);font-size:11px}
.topbar nav{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:8px}
.topbar nav button{border:0;border-radius:10px;padding:9px 14px;color:#fff;font-weight:750;box-shadow:0 6px 16px rgba(39,48,78,.15)}
.top-plan{background:#7c5cff}
.top-stats{background:#2f80c9}
.top-documents{background:#22a879}
.top-account{background:#e47b45}
.language-select{border:1px solid var(--line);border-radius:10px;padding:8px 9px;background:var(--paper);color:var(--ink);font-weight:800}

main{max-width:1320px;margin:auto;padding:clamp(18px,3vw,40px) clamp(20px,5vw,72px)}
.intro{display:grid;grid-template-columns:minmax(300px,.85fr) minmax(420px,1.15fr);gap:clamp(32px,7vw,100px);align-items:center;min-height:calc(100vh - 180px)}
.eyebrow{color:var(--accent);text-transform:uppercase;letter-spacing:.13em;font-weight:800;font-size:12px}
.intro h1{font-size:clamp(44px,6vw,76px);line-height:1.02;letter-spacing:-.055em;margin:18px 0}
.intro h1 em{font-style:normal;color:var(--accent)}
.intro p{color:var(--muted);font-size:18px;max-width:590px}
.input-card,.dialog-card{background:var(--paper);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:28px}
.input-card label,.dialog-card label{display:block;font-weight:700;font-size:13px;margin:10px 0 7px}
.input-card input,.input-card textarea,.dialog-card input{width:100%;border:1px solid var(--line);color:var(--ink);background:var(--bg);border-radius:12px;padding:12px}
.input-card textarea{min-height:260px;resize:vertical}
.input-actions{display:flex;justify-content:space-between;gap:12px;margin-top:16px}
.primary,.file-button,.play{border:0;border-radius:12px;background:var(--accent);color:#fff!important;padding:12px 18px;font-weight:800}
.file-button{background:var(--ink);cursor:pointer}
.file-button input{display:none}
.ghost,.controls button{border:1px solid var(--line);border-radius:10px;padding:9px 14px;color:var(--ink);background:transparent}
.file-status{font-size:13px!important;margin:8px 0 0!important}
.url-import{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.url-import>div{display:flex;gap:8px}
.url-import input{min-width:0;flex:1}
.url-button{border:0;border-radius:12px;padding:11px 15px;background:#2f80c9;color:#fff;font-weight:800;white-space:nowrap}
.premium-label{display:inline-block;margin-left:7px;padding:2px 7px;border-radius:999px;background:#7c5cff;color:#fff;font-size:10px;line-height:1.5;text-transform:uppercase;letter-spacing:.05em}
.premium-hint{margin:7px 0 0!important;color:var(--muted);font-size:12px!important}

.reader{max-width:1120px;margin:auto}
.reader-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:20px}
.reader-head h2{font-size:32px;margin:4px 0}
.back-link{border:0;background:none;color:var(--accent);padding:0}
.action-button{border:0;border-radius:11px;padding:10px 18px;color:#fff;font-weight:800}
.save-button{background:linear-gradient(135deg,#1faa78,#24c68a);box-shadow:0 8px 20px rgba(31,170,120,.25)}
.settings{display:grid;grid-template-columns:2.3fr repeat(4,1fr) 1.3fr;align-items:end;gap:14px;background:var(--paper);padding:18px;border:1px solid var(--line);border-radius:0}
.settings label{font-size:12px;color:var(--muted);font-weight:700}
.settings label span{float:right;color:var(--ink)}
.settings input[type=range]{display:block;width:100%;accent-color:var(--accent)}
.settings select{width:100%;margin-top:5px;padding:7px;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:8px}
.settings input[type=color]{display:block;width:100%;height:35px;padding:2px;border:1px solid var(--line);background:var(--bg);border-radius:8px}
.settings .check{display:flex;align-items:center;gap:6px;padding-bottom:7px}
.reading-stage{min-height:460px;max-height:58vh;overflow:auto;background:var(--paper);border:1px solid var(--line);border-top:0;padding:clamp(24px,5vw,62px);scroll-behavior:smooth}
.flow-text{max-width:820px;margin:auto;font-size:22px;line-height:1.9}
.word{border-radius:4px;padding:2px 0;transition:background .08s,color .08s}
.word.active{background:var(--accent);color:#fff;box-shadow:0 0 0 3px var(--accent)}
.focus-text{min-height:330px;display:grid;place-items:center;text-align:center;font-size:clamp(36px,7vw,74px);font-weight:750;letter-spacing:-.03em}
.progress-line{height:6px;background:var(--line)}
.progress-line div{height:100%;width:0;background:var(--accent);transition:width .15s}
.metrics{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;margin:9px 2px}
.controls{display:flex;justify-content:center;gap:10px;margin:24px}
.controls button{border:0;color:#fff;font-weight:800;box-shadow:0 8px 18px rgba(39,48,78,.16)}
.controls .play{min-width:150px;background:linear-gradient(135deg,var(--accent),#9f7cff)}
.controls .step-button{background:#3f6fca}
.controls .reset-button{background:#e47b45}
.display-options{background:var(--paper);border:1px solid var(--line);border-radius:14px 14px 0 0;padding:12px 18px}
.display-options summary{cursor:pointer;font-weight:800;color:var(--accent)}
.display-options div{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;margin-top:14px}
.display-options label{display:grid;gap:6px;color:var(--muted);font-size:13px}
.display-options input{accent-color:var(--accent)}
.display-options select{color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:7px}

dialog{border:0;background:transparent;padding:20px;max-width:540px;width:100%}
dialog::backdrop{background:rgba(13,15,24,.62);backdrop-filter:blur(5px)}
.dialog-card{position:relative;width:100%}
.dialog-card .close{position:absolute;right:15px;top:12px;border:0;background:none;color:var(--muted);font-size:28px}
.dialog-card h2{margin-top:0}
.tabs{display:flex;border-bottom:1px solid var(--line);margin-bottom:18px}
.tabs button{flex:1;border:0;background:none;padding:10px;color:var(--muted)}
.tabs .active{color:var(--accent);border-bottom:2px solid var(--accent)}
.wide{width:100%;margin-top:14px}
.library-dialog{max-width:860px}
.documents-card{max-height:86vh;overflow:auto}
.documents-heading{display:flex;align-items:end;justify-content:space-between;padding-right:30px}
.documents-heading h2{font-size:30px;margin:4px 0}
.documents-count{color:var(--muted);font-size:13px}
.documents-tools{display:grid;grid-template-columns:2fr 1fr 1fr;gap:12px;background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:14px;margin:18px 0}
.documents-tools label{margin:0}
.documents-tools label span{display:block;color:var(--muted);font-size:11px;margin-bottom:5px}
.documents-tools input,.documents-tools select{width:100%;padding:9px 10px;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:9px}
.doc-item{display:grid;grid-template-columns:minmax(0,1fr) 180px;align-items:center;gap:18px;border:1px solid var(--line);border-radius:14px;padding:15px 16px;margin:10px 0}
.doc-item:hover{border-color:var(--accent);box-shadow:0 8px 24px rgba(63,48,100,.08)}
.doc-title{display:block;font-size:16px;overflow-wrap:anywhere}
.doc-meta{display:flex;gap:12px;color:var(--muted);font-size:12px;margin:4px 0 8px}
.doc-progress{height:5px;background:var(--line);border-radius:999px;overflow:hidden}
.doc-progress span{display:block;height:100%;background:var(--accent);border-radius:999px}
.doc-actions{display:grid;grid-template-columns:1fr 38px 38px;gap:6px}
.doc-actions button{border:0;border-radius:9px;padding:8px;color:#fff;font-weight:700}
.doc-open{background:var(--accent)}
.doc-rename{background:#3f6fca}
.doc-delete{background:#d95b62}
.documents-empty{text-align:center;color:var(--muted);padding:30px}
.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,20px);background:var(--ink);color:var(--paper);border-radius:12px;padding:11px 18px;opacity:0;pointer-events:none;transition:.25s}
.toast.show{opacity:1;transform:translate(-50%,0)}

.stats-dialog{max-width:1040px}
.stats-card{max-height:90vh;overflow:auto}
.stats-heading{display:flex;align-items:end;justify-content:space-between;gap:20px}
.stats-heading h2{font-size:30px;margin:5px 0}
.stats-heading label{font-size:12px;font-weight:700;color:var(--muted)}
.stats-heading select{display:block;margin-top:5px;padding:8px 12px;border:1px solid var(--line);border-radius:9px;background:var(--bg);color:var(--ink)}
.stats-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}
.stats-summary div{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:15px}
.stats-summary strong{display:block;font-size:25px;color:var(--accent)}
.stats-summary span{color:var(--muted);font-size:12px}
.stats-card canvas{display:block;width:100%;height:auto;background:var(--paper);border:1px solid var(--line);border-radius:14px}
.stats-table-wrap{overflow:auto}
.stats-table{width:100%;border-collapse:collapse;font-size:13px}
.stats-table th,.stats-table td{text-align:left;padding:10px;border-bottom:1px solid var(--line)}
.stats-table th{color:var(--muted)}
.stats-empty{text-align:center;color:var(--muted);padding:28px}

.app-entry{display:block;min-height:auto;padding:4px 0 30px}
.app-entry-heading{width:100%;margin:0 0 18px}
.app-entry-heading h1{font-size:clamp(34px,4vw,54px);line-height:1.05;letter-spacing:-.045em;margin:8px 0}
.app-entry-heading p{max-width:none;color:var(--muted);font-size:17px}
.app-entry>.input-card{width:100%}

.hero-logo{display:none;width:210px;height:110px;object-fit:contain;margin-bottom:18px}
.hero-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.hero-points span,.use-cases span{border:1px solid var(--line);background:var(--paper);border-radius:999px;padding:7px 12px;color:var(--muted);font-size:13px}
.product-explainer,.pricing-section{padding:70px clamp(20px,5vw,72px);margin:0 calc(-1 * clamp(28px,5vw,72px))}
.product-explainer{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-heading{max-width:760px;margin:0 auto 36px;text-align:center}
.section-heading h2{font-size:clamp(30px,4vw,48px);line-height:1.1;letter-spacing:-.035em;margin:10px 0}
.section-heading p{color:var(--muted);font-size:17px}
.feature-grid{max-width:1120px;margin:auto;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.feature-grid article{background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:22px}
.feature-grid article>span{display:grid;place-items:center;width:34px;height:34px;background:var(--accent);color:#fff;border-radius:10px;font-weight:800}
.feature-grid h3{margin:16px 0 7px}
.feature-grid p{color:var(--muted);font-size:14px;margin:0}
.use-cases{max-width:1120px;margin:28px auto 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:9px}
.use-cases strong{margin-right:5px}
.pricing-section{background:var(--bg)}
.pricing-grid{max-width:850px;margin:auto;display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:stretch}
.price-card{position:relative;background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.premium-card{border:2px solid var(--accent);transform:translateY(-8px)}
.popular{position:absolute;right:20px;top:-13px;background:var(--accent);color:#fff;border-radius:999px;padding:5px 12px;font-size:11px;font-weight:800}
.plan-name{font-weight:800;color:var(--accent);text-transform:uppercase;letter-spacing:.1em;font-size:12px}
.price-card h3{font-size:35px;margin:6px 0}
.price-card h3 small{font-size:14px;color:var(--muted)}
.price-card p{color:var(--muted)}
.price-card ul{list-style:none;padding:0;margin:18px 0 26px;flex:1}
.price-card li{padding:7px 0;border-bottom:1px solid var(--line)}
.price-card li:before{content:'✓';color:#22a879;font-weight:900;margin-right:8px}
.price-card button{width:100%;border:0;border-radius:12px;padding:13px;font-weight:800;cursor:pointer}
.plan-free{background:var(--ink);color:var(--paper)}
.premium-card>small{text-align:center;color:var(--muted);margin-top:9px}
.plan-dialog{max-width:570px}
.plan-card{text-align:center}
.plan-card h2{font-size:32px;margin:7px 0}
.plan-card>p{color:var(--muted)}
.plan-dialog-features{display:grid;gap:8px;text-align:left;background:var(--bg);border-radius:14px;padding:16px;margin:20px 0}
.plan-dialog-features span:before{content:'✓';color:#22a879;font-weight:900;margin-right:8px}
.plan-payment{display:block;text-decoration:none}
.payment-note{font-size:12px!important}
.plan-card.premium-active .plan-payment,.plan-card.premium-active .payment-note{display:none}

@media(max-width:900px){.intro{grid-template-columns:1fr}
.settings{grid-template-columns:1fr 1fr 1fr}
.settings>label:first-child{grid-column:1/-1}
.reading-stage{max-height:none}
.topbar{padding:0 16px}
.topbar nav #documentsBtn{display:none}
.stats-summary{grid-template-columns:1fr 1fr 1fr}
}

@media(max-width:560px){main{padding:20px 12px}
.brand small{display:none}
.topbar nav #statsBtn{display:none}
.intro h1{font-size:43px}
.input-card{padding:18px}
.input-actions,.url-import>div{flex-direction:column}
.input-actions>*{text-align:center}
.settings{grid-template-columns:1fr 1fr}
.settings>label:first-child{grid-column:1/-1}
.reading-stage{padding:25px 18px;min-height:390px}
.metrics{font-size:11px}
.display-options div{grid-template-columns:1fr}
.controls{margin:18px 0}
.controls button{padding:9px}
.controls .play{min-width:120px}
.stats-summary{grid-template-columns:1fr}
.stats-heading{align-items:start;flex-direction:column}
}

@media(max-width:560px){.topbar nav #statsBtn{display:inline-block}
}

@media(max-width:650px){.documents-tools{grid-template-columns:1fr}
.doc-item{grid-template-columns:1fr}
.doc-actions{grid-template-columns:1fr 44px 44px}
}

@media(max-width:900px){.feature-grid{grid-template-columns:1fr 1fr}
.topbar nav #plansBtn{display:none}
.hero-logo{display:block}
.brand>img{width:70px}
.product-explainer,.pricing-section{margin:0 -20px}
}

@media(max-width:620px){.feature-grid,.pricing-grid{grid-template-columns:1fr}
.premium-card{transform:none}
.product-explainer,.pricing-section{padding:50px 20px}
.hero-points{display:grid}
.brand>img{display:none}
}