:root{--ink:#17343d;--teal:#0e7475;--teal-dark:#103b43;--mint:#e8f5f2;--bg:#f4f8f8;--line:#dbe7e7;--muted:#637b82;--white:#fff;--shadow:0 12px 35px rgba(21,61,68,.07)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Cairo",system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.75}.topbar{height:auto;min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:12px max(22px,calc((100vw - 1120px)/2));background:rgba(255,255,255,.93);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}.brand-mark{display:flex;align-items:center;justify-content:center;width:45px;height:45px;border-radius:14px;background:var(--teal-dark);color:#fff;font-size:19px;font-weight:800;letter-spacing:-2px}.brand-mark span{color:#80ddd0;font-size:16px}.brand b{display:block;font-size:1.03rem;line-height:1.3}.brand small{display:block;font-size:.75rem;color:var(--muted)}nav{display:flex;gap:18px;align-items:center}nav a,.learning-links a{color:var(--teal);text-decoration:none;font-size:.91rem;font-weight:700}nav a:hover,.learning-links a:hover{text-decoration:underline}.container{max-width:1060px;margin:28px auto 0;padding:0 18px}.hero{background:linear-gradient(120deg,#103b43,#126c70);padding:clamp(24px,5vw,44px);border-radius:24px;color:#fff;box-shadow:var(--shadow);overflow:hidden;position:relative}.hero:after{content:"";position:absolute;left:-45px;bottom:-90px;width:245px;height:245px;border:1px solid rgba(255,255,255,.13);border-radius:50%;box-shadow:0 0 0 28px rgba(255,255,255,.035),0 0 0 58px rgba(255,255,255,.025)}.eyebrow{display:inline-block;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.2);padding:4px 12px;border-radius:999px;font-size:.8rem;color:#e9ffff}.hero h1{font-size:clamp(2rem,4vw,2.8rem);margin:13px 0 6px;font-weight:800;line-height:1.25}.hero p{margin:0;max-width:650px;color:#e4f2f2;font-size:1.02rem}.hero-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}.hero-points span{border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);padding:5px 11px;border-radius:999px;font-size:.8rem}.panel,.learning-card{background:var(--white);border:1px solid var(--line);border-radius:22px;padding:clamp(18px,4vw,32px);margin-top:22px;box-shadow:var(--shadow)}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:16px}.section-kicker{font-size:.78rem;color:var(--teal);font-weight:800}.section-heading h2,.learning-card h2{margin:3px 0 0;font-size:1.35rem;line-height:1.4}.direction-control{display:flex;flex-direction:column;gap:4px;color:var(--muted);font-weight:700;font-size:.8rem;min-width:180px}.direction-control select{border:1px solid var(--line);border-radius:10px;background:#fff;padding:10px;color:var(--ink);font:inherit;font-weight:700}.tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin:24px 0 20px;padding-bottom:12px}.tab{border:1px solid transparent;background:transparent;padding:10px 16px;border-radius:12px;color:var(--muted);font:inherit;font-size:.93rem;font-weight:700;cursor:pointer}.tab.active{background:var(--mint);border-color:#cde6e2;color:var(--teal-dark)}.tab-panel{display:block}.hidden{display:none!important}.field-label{display:block;font-weight:800;margin-bottom:8px}.textarea,textarea{width:100%;min-height:168px;resize:vertical;border:1px solid #ccdcdc;border-radius:14px;padding:15px;color:var(--ink);font:inherit;line-height:1.85;outline:none;background:#fcfefe}textarea:focus,select:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(14,116,117,.1)}.form-row{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap}.btn{border:0;border-radius:12px;padding:11px 19px;font:inherit;font-weight:800;cursor:pointer;transition:transform .12s,opacity .12s}.btn:hover{transform:translateY(-1px)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}.primary{background:var(--teal);color:#fff}.secondary{background:var(--mint);border:1px solid #cce4df;color:var(--teal-dark)}.muted{color:var(--muted);font-size:.86rem}.status{font-size:.91rem;margin-top:12px;white-space:pre-wrap}.status.error{color:#9f2d28;background:#fff1ef;border:1px solid #f1d5d2;border-radius:10px;padding:10px}.status.success{color:#17634e}.upload-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:18px 0}.upload-card{display:flex;flex-direction:column;align-items:flex-start;gap:6px;background:#fbfefe;border:1.5px dashed #bdd1d3;border-radius:16px;padding:20px;cursor:pointer;min-height:145px}.upload-card:hover{background:var(--mint);border-color:var(--teal)}.upload-icon{display:grid;place-items:center;width:37px;height:37px;border-radius:11px;background:var(--mint);color:var(--teal);font-weight:800;font-size:1.4rem}.upload-card b{font-size:.95rem}.upload-card small{color:var(--muted)}.upload-card input{max-width:100%;font-size:.78rem}.file-name{font-size:.88rem;color:var(--muted);margin:8px 0 14px;overflow-wrap:anywhere}.progress-wrap{margin-top:16px}.progress-track{height:9px;background:#e8f0f0;border-radius:999px;overflow:hidden}.progress-bar{height:100%;width:0;background:linear-gradient(90deg,#167c7e,#69cdb8);transition:width .25s}.progress-wrap .muted{display:block;margin-top:6px}.results-stack{display:grid;gap:14px;margin-top:20px}.result-card{border:1px solid var(--line);border-radius:15px;overflow:hidden;background:#fff}.result-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 13px;background:#f8fbfb;color:var(--muted);font-size:.77rem;border-bottom:1px solid var(--line)}.result-body{padding:15px}.source-label{font-size:.75rem;font-weight:800;color:#687f85;margin-bottom:5px}.source-content{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.85;font-weight:600}.translation-content{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.95;font-size:1rem;color:#125f5f;margin-top:12px;padding-top:12px;border-top:1px dashed var(--line)}.result-warning{font-size:.8rem;color:#8a5b0a;background:#fff8e8;border-radius:8px;padding:8px 10px;margin-top:9px}.ad-slot:empty{display:none}.ad-slot{margin:20px auto;max-width:100%;text-align:center;overflow:hidden;min-height:0}.ad-slot iframe,.ad-slot img{max-width:100%}.learning-card{background:#eef7f5;box-shadow:none}.learning-card p{color:#526d73;margin-bottom:15px}.learning-links{display:flex;gap:18px;flex-wrap:wrap}.footer{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:22px 4px 30px;color:var(--muted);font-size:.78rem}.empty-state{padding:16px;border-radius:12px;background:#f8fbfb;color:var(--muted);font-size:.9rem}.error-banner{padding:14px;border:1px solid #f0d2d1;background:#fff4f3;color:#8b2724;border-radius:12px}
@media(max-width:680px){.topbar{align-items:flex-start;padding:12px 16px;flex-direction:column;gap:10px}.topbar nav{width:100%;gap:16px;overflow-x:auto;padding-bottom:2px}.container{margin-top:16px;padding:0 11px}.hero{border-radius:18px;padding:25px 20px}.hero h1{font-size:1.9rem}.panel,.learning-card{padding:18px 14px;border-radius:17px}.section-heading{align-items:stretch;flex-direction:column}.direction-control{min-width:0}.tabs{display:grid;grid-template-columns:1fr 1fr}.tab{padding:9px 7px;font-size:.85rem}.upload-grid{grid-template-columns:1fr}.upload-card{min-height:120px}.form-row .btn{width:100%}.footer{flex-direction:column}.result-body{padding:12px}.result-head{align-items:flex-start}}

/* Account, quota, subscription, and PWA-install UI */
.account-panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(16px,3.5vw,25px);margin-top:18px;box-shadow:var(--shadow)}
.account-main{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.account-title{font-size:1.05rem;font-weight:800;margin:3px 0}.account-actions{display:flex;gap:8px;flex-wrap:wrap}.quota-track{height:8px;background:#e8f0f0;border-radius:999px;overflow:hidden;margin:16px 0 14px}.quota-fill{height:100%;background:linear-gradient(90deg,#167c7e,#69cdb8);border-radius:999px;transition:width .25s}.subscription-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:14px}.subscription-row>div{display:flex;flex-direction:column;gap:2px}.hero-note{display:flex;flex-direction:column;gap:3px;margin-top:14px;padding:13px 16px;border:1px solid #cfe3df;border-radius:14px;background:#f0faf7;color:#385e60;font-size:.9rem}.hero-note b{color:var(--teal-dark)}.install-btn{padding:7px 12px;font-size:.83rem}.app-dialog{width:min(440px,calc(100vw - 24px));border:1px solid var(--line);border-radius:20px;padding:0;color:var(--ink);box-shadow:0 24px 80px rgba(14,44,49,.22)}.app-dialog::backdrop{background:rgba(8,27,32,.52);backdrop-filter:blur(3px)}.dialog-head{display:flex;align-items:center;justify-content:space-between;padding:17px 20px;background:#f7fbfa;border-bottom:1px solid var(--line)}.close-btn{border:0;background:transparent;font-size:1.6rem;line-height:1;cursor:pointer;color:var(--muted)}.dialog-body{padding:20px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:16px 0}.text-input{width:100%;border:1px solid #ccdcdc;border-radius:11px;padding:12px 13px;color:var(--ink);font:inherit;margin:0 0 12px;background:#fff}.full-btn{width:100%;margin-top:8px}.price-large{font-size:2.4rem;font-weight:800;color:var(--teal-dark);line-height:1.3}.price-large small{font-size:.95rem;color:var(--muted);font-weight:600}.notice{background:#fff8e8;border:1px solid #f0e0b7;border-radius:12px;padding:12px;color:#75551a;font-size:.88rem;line-height:1.7}.hidden{display:none!important}
@media(max-width:680px){.account-panel{padding:16px 13px;border-radius:17px}.account-main{align-items:stretch;flex-direction:column}.account-actions{display:grid;grid-template-columns:1fr}.account-actions .btn{width:100%}.subscription-row{align-items:stretch}.subscription-row>.btn{align-self:center}.hero-note{font-size:.82rem}.install-btn{flex-shrink:0}}