:root{--navy:#0b3154;--blue:#1673a8;--cyan:#28a9c7;--green:#18a56d;--bg:#f2f7fa;--ink:#102b3e;--muted:#617684;--line:#d8e4ea;--danger:#c33}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;color:var(--ink);background:linear-gradient(135deg,#f8fbfd,#edf5f8);min-height:100vh}.appbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;padding:10px clamp(16px,4vw,54px);background:rgba(8,43,74,.97);box-shadow:0 10px 35px #0b315425}.brand{display:flex;align-items:center;gap:12px;background:none;border:0;color:white;cursor:pointer}.brand img{width:138px;height:46px;object-fit:contain;background:#fff;border-radius:9px;padding:2px}.brand span{font-weight:800}.appbar nav{display:flex;gap:8px;flex-wrap:wrap}.appbar nav button{border:0;background:transparent;color:#e8f5fb;padding:10px 12px;border-radius:10px;cursor:pointer;font-weight:700}.appbar nav button:hover,.appbar nav .back{background:#ffffff18}main{max-width:1220px;margin:auto;padding:28px clamp(16px,4vw,44px) 60px}.hero{min-height:330px;background:linear-gradient(135deg,#0b3154,#116b91);color:white;border-radius:28px;padding:clamp(28px,5vw,60px);display:grid;grid-template-columns:1.5fr .5fr;align-items:center;overflow:hidden;box-shadow:0 24px 65px #0b315428}.hero h1{font-size:clamp(34px,5vw,64px);line-height:1.02;margin:.3em 0}.hero p{font-size:18px;max-width:760px;color:#d9f0f8}.eyebrow{font-weight:900;letter-spacing:.08em;font-size:12px;text-transform:uppercase;color:#2aa4c7}.hero .eyebrow{color:#88e0f0}.truck-art{font-size:clamp(90px,15vw,180px);filter:drop-shadow(0 16px 20px #0004);animation:float 3s ease-in-out infinite}@keyframes float{50%{transform:translateY(-10px)}}.hero-stats{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}.hero-stats span{background:#ffffff15;border:1px solid #ffffff30;padding:10px 14px;border-radius:14px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:24px 0}.card,.category-card,.theory-card{border:1px solid var(--line);background:#fff;border-radius:22px;padding:24px;text-align:left;cursor:pointer;box-shadow:0 12px 28px #23445a10;transition:.2s}.card:hover,.category-card:hover,.theory-card:hover{transform:translateY(-4px);box-shadow:0 18px 35px #23445a20}.card>span{font-size:34px}.card h2{margin:12px 0 8px}.card p,.theory-card p{color:var(--muted);line-height:1.55}.card strong,.theory-card strong{color:var(--blue)}.rule{display:flex;justify-content:space-between;gap:14px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:17px 20px}.page-head{margin:20px 0 25px}.page-head h1{font-size:clamp(32px,4.5vw,52px);margin:.2em 0}.page-head p{color:var(--muted);font-size:17px}.category-grid,.theory-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}.category-card span{font-size:32px}.category-card h3,.theory-card h3{font-size:20px;margin:12px 0}.category-card b{color:var(--blue)}.theory-card .code{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;background:#e8f6fb;color:#0b6e91;font-weight:900}.theory-reader{display:grid;grid-template-columns:290px minmax(0,1fr);gap:24px}.toc{position:sticky;top:90px;align-self:start;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;max-height:calc(100vh - 110px);overflow:auto}.toc h3{padding:6px 8px}.toc button{width:100%;display:flex;gap:9px;text-align:left;border:0;background:transparent;padding:9px 8px;border-radius:9px;color:#344e5d;cursor:pointer}.toc button:hover{background:#eef7fa}.toc button span{font-weight:900;color:#2391b0}.chapter{scroll-margin-top:100px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:clamp(20px,4vw,38px);margin-bottom:18px}.chapter h2{font-size:clamp(23px,3vw,34px);margin:.2em 0 .7em}.chapter-kicker{font-size:12px;font-weight:900;color:#1884a7;letter-spacing:.08em}.book-text{font-family:Georgia,"Times New Roman",serif;font-size:17px;line-height:1.75;color:#1b2d38}.book-text p{margin:0 0 1em}.theory-media,.media-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin:20px 0}.theory-media img,.media-grid img{width:100%;max-height:450px;object-fit:contain;border-radius:14px;border:1px solid var(--line);background:#fff}.quiz-top{display:grid;grid-template-columns:1fr 240px;align-items:end;gap:18px}.quiz-top h1{margin:.2em 0}.progress{height:11px;background:#dce9ee;border-radius:99px;overflow:hidden}.progress i{display:block;height:100%;background:linear-gradient(90deg,#18a56d,#2ca4c8)}.question-card{background:#fff;border:1px solid var(--line);border-radius:26px;padding:clamp(20px,5vw,44px);box-shadow:0 18px 44px #173d5013}.question-card h2{font-size:clamp(24px,3.3vw,36px);line-height:1.25}.choices{display:grid;gap:12px;margin-top:20px}.choice{display:grid;grid-template-columns:42px 1fr;align-items:center;text-align:left;border:2px solid #d9e7ed;background:#fff;border-radius:17px;padding:14px;cursor:pointer;font-size:17px;color:var(--ink)}.choice:hover:not(:disabled){border-color:#5eb2cc;transform:translateX(3px)}.choice .letter{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#eaf4f8;font-weight:900}.choice.correct{border-color:#2a9d65;background:#effbf5}.choice.wrong{border-color:#d75454;background:#fff2f2}.choice.muted{opacity:.65}.choice-media{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,220px));gap:8px;margin-top:8px}.choice-media img{width:100%;max-height:210px;object-fit:contain}.feedback{margin:20px 0 0;padding:16px;border-radius:14px;display:flex;gap:12px;flex-wrap:wrap}.feedback.ok{background:#eaf9f1;color:#126b42}.feedback.bad{background:#fff0f0;color:#9a2626}.primary,.next,.result-actions button{border:0;background:#0b6e91;color:white;padding:13px 20px;border-radius:12px;font-weight:800;cursor:pointer}.next{margin-top:16px}.result{text-align:center;background:#fff;border:1px solid var(--line);border-radius:28px;padding:50px;max-width:780px;margin:40px auto}.result-icon{font-size:70px}.score{font-size:80px;font-weight:900;color:#168660}.result.fail .score{color:#c24646}.score small{font-size:28px;color:#72818b}.result-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}.result-actions button:not(.primary){background:#eef4f7;color:#254557}footer{text-align:center;color:#7b8d98;padding:18px 20px 40px}.future-lang{margin-left:10px}#license-gate{position:fixed;inset:0;z-index:9999;background:linear-gradient(135deg,#062a48,#0b6688);display:grid;place-items:center;padding:20px}.license-gate-hidden{display:none!important}.license-panel{width:min(480px,100%);background:#fff;border-radius:26px;padding:34px;text-align:center;box-shadow:0 30px 70px #0005}.license-logo{font-size:58px}.license-eyebrow{font-weight:900;color:#1685a7}.license-panel input{width:100%;padding:15px;border:1px solid #c8d9e2;border-radius:12px;font-size:17px;margin:8px 0 12px;text-transform:uppercase}.license-panel form button{width:100%;padding:14px;border:0;border-radius:12px;background:#0b6e91;color:#fff;font-weight:900}.license-status{margin-top:12px}.license-error{color:#b22}.license-help{margin-top:14px;color:#70818b;font-size:13px}@media(max-width:800px){.appbar{align-items:flex-start}.brand span{display:none}.appbar nav{justify-content:flex-end}.appbar nav button{font-size:13px;padding:8px}.hero{grid-template-columns:1fr}.truck-art{display:none}.cards{grid-template-columns:1fr}.rule{flex-direction:column}.theory-reader{grid-template-columns:1fr}.toc{position:static;max-height:none}.quiz-top{grid-template-columns:1fr}.question-card{border-radius:18px}.choice{grid-template-columns:36px 1fr}.future-lang{display:block;margin:5px 0 0}}@media(max-width:480px){main{padding:16px 12px 40px}.appbar{padding:7px 9px}.brand img{width:92px;height:38px}.appbar nav button{padding:7px 6px}.hero{padding:24px;border-radius:20px}.hero h1{font-size:34px}.chapter,.question-card{padding:18px}.book-text{font-size:16px}.result{padding:28px 18px}.score{font-size:64px}}

.test-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin:22px 0 40px}.test-card{border:1px solid #d5e4eb;background:#fff;border-radius:18px;padding:20px 14px;cursor:pointer;text-align:center;box-shadow:0 8px 24px rgba(15,49,84,.06)}.test-card:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(15,49,84,.12)}.test-card span{display:block;font-size:12px;letter-spacing:.12em;color:#678}.test-card strong{display:block;font-size:32px;color:#0b6e91;margin:4px 0}.test-card small{color:#789}.truck-art img{max-width:360px;width:100%;height:auto;object-fit:contain}.brand img{object-fit:contain;background:#fff;border-radius:8px}

/* v1.2 – καλύτερο σκορ ανά σταθερό τεστ */
.test-card{position:relative;display:flex;flex-direction:column;align-items:center;min-height:245px}
.test-card .test-label{display:block;font-size:12px;letter-spacing:.12em;color:#678}
.test-ring{--p:0%;width:82px;height:82px;border-radius:50%;margin:8px auto 10px;display:grid;place-items:center;background:conic-gradient(#18a56d var(--p),#e4edf1 0);position:relative}
.test-ring::before{content:"";position:absolute;inset:8px;background:#fff;border-radius:50%}
.test-ring span{position:relative;z-index:1;font-size:17px!important;letter-spacing:0!important;color:#0b3154!important;font-weight:900}
.best-score{margin:5px 0 8px;font-size:14px;font-weight:900;color:#168660;min-height:20px}
.best-score.empty{color:#7b8d98;font-weight:700}
.best-result{margin:4px auto 20px;padding:12px 18px;max-width:340px;border-radius:14px;background:#eef8f3;border:1px solid #cceadd;display:flex;align-items:center;justify-content:space-between;gap:15px;color:#296146}
.best-result span{font-size:14px;font-weight:700}.best-result b{font-size:22px;color:#168660;white-space:nowrap}

/* v1.3.2 Free + Premium additions - original v1.2 UI preserved */
.access-badge{display:inline-flex;align-items:center;border-radius:999px;padding:8px 11px;font-size:12px;font-weight:950;letter-spacing:.04em;border:1px solid transparent;white-space:nowrap;margin-left:8px}.access-badge.demo{background:#f0b52d;color:#4d3500}.unlock-btn{font-weight:900!important;margin-left:8px!important}.demo-offer{display:grid;grid-template-columns:1fr 1fr auto;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:16px 20px;margin:20px 0 6px;box-shadow:0 7px 28px rgba(15,53,87,.06)}.demo-offer div{display:grid;gap:3px}.demo-offer b{color:#795700}.demo-offer span{color:var(--muted);font-size:14px}.demo-card{position:relative;border:2px solid #73c8a4!important;background:linear-gradient(180deg,#f5fff9,#fff)!important}.premium-locked-card{position:relative;background:linear-gradient(180deg,#fffdf6,#fff)!important;border:1px solid #ead7a1!important}.free-tag,.premium-tag{position:absolute;right:16px;top:16px;border-radius:999px;padding:5px 9px;font-size:10px;font-weight:1000;letter-spacing:.07em}.free-tag{background:#167a50;color:#fff}.premium-tag{background:#ffe4a0;color:#725000}.demo-number{font-size:1rem!important;font-weight:950!important;color:#167a50!important}.premium-price{display:flex;align-items:baseline;justify-content:center;gap:10px;margin:18px 0 12px}.premium-price strong{font-size:42px;color:#8a6500}.premium-price span{color:#617684;font-weight:800}.license-pay{display:block;text-decoration:none;border-radius:14px;padding:14px;background:linear-gradient(135deg,#13a36f,#1cbb83);color:#fff;font-weight:950;box-shadow:0 8px 22px rgba(19,148,103,.19)}.school-offer{margin:15px 0;color:#4a6473;line-height:1.55;font-size:14px}.school-offer a{color:#8a6500;font-weight:900}.license-divider{display:flex;align-items:center;gap:10px;margin:18px 0 8px;color:#75909e;font-size:10px;font-weight:950;letter-spacing:.06em}.license-divider:before,.license-divider:after{content:"";height:1px;background:#d9e6ec;flex:1}.premium-panel{position:relative;max-height:min(94vh,760px);overflow:auto}.license-close{position:absolute;right:14px;top:12px!important;width:38px!important;height:38px!important;padding:0!important;margin:0!important;border-radius:50%!important;background:#eef4f7!important;color:#496270!important;font-size:26px!important;line-height:1!important;box-shadow:none!important;border:0!important}.license-copy b{color:#8a6500}@media(max-width:800px){.demo-offer{grid-template-columns:1fr}.access-badge{font-size:10px;padding:7px 9px}.unlock-btn{font-size:12px!important;padding:8px 10px!important}}

.version-chip{position:fixed;right:8px;bottom:8px;z-index:5;font:11px/1.2 system-ui;background:#0b3154;color:#fff;padding:5px 8px;border-radius:999px;opacity:.75}.demo-error{max-width:850px;margin:24px auto;padding:18px;border:2px solid #b42318;border-radius:14px;background:#fff4f2;color:#7a271a}.inline-home-note{font-size:13px;opacity:.75;margin-top:10px}.pay-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:18px}.pay-row a,.pay-row button{display:inline-flex;align-items:center;justify-content:center;text-decoration:none}.plain-link{border:0;background:transparent;text-decoration:underline;cursor:pointer}.diag-ok{font-size:12px;color:#18794e;margin-top:8px}