:root{
  --bg:#07131f; --bg2:#0c1d31; --card:#10243a; --card2:#132c48;
  --glass:rgba(18,42,68,.72); --line:rgba(159,190,224,.18);
  --text:#f5f9ff; --muted:#a9b9ca; --green:#55e39c; --red:#ff6b7a;
  --yellow:#ffd166; --blue:#68a7ff; --purple:#9d7cff;
  --shadow:0 22px 60px rgba(0,0,0,.33); --radius:24px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:radial-gradient(circle at 15% 10%,rgba(85,227,156,.18),transparent 30%),radial-gradient(circle at 85% 15%,rgba(104,167,255,.18),transparent 31%),linear-gradient(180deg,var(--bg),var(--bg2))}
button,input,select,textarea{font:inherit} button{cursor:pointer}.hidden{display:none!important}
.glass{background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow);backdrop-filter:blur(18px)}
.auth-screen{min-height:100vh;display:grid;place-items:center;padding:24px;position:relative;overflow:hidden}.auth-bg-orb{position:absolute;width:360px;height:360px;border-radius:999px;filter:blur(14px);opacity:.65}.orb-a{background:rgba(85,227,156,.2);top:-100px;left:-80px}.orb-b{background:rgba(157,124,255,.22);bottom:-120px;right:-90px}.auth-card{width:min(520px,100%);border-radius:32px;padding:28px;position:relative;z-index:1}.brand-row,.side-brand{display:flex;align-items:center;gap:14px}.brand-mark{width:56px;height:56px;border-radius:20px;display:grid;place-items:center;background:linear-gradient(145deg,var(--green),#60b8ff);color:#062014;font-weight:900;letter-spacing:-.06em;box-shadow:0 12px 26px rgba(85,227,156,.25)}.brand-mark.small{width:42px;height:42px;border-radius:15px;font-size:.92rem}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.76rem;color:var(--green);font-weight:800;margin:0 0 4px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(2.2rem,6vw,4rem);line-height:.95;margin-bottom:12px}h2{font-size:clamp(1.5rem,3vw,2.3rem);margin-bottom:0}h3{font-size:1.2rem}.hero-copy{font-size:1.05rem;line-height:1.55;color:var(--muted);margin:20px 0}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:6px;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:18px;margin-bottom:16px}.auth-tab{border:0;background:transparent;color:var(--muted);padding:12px;border-radius:14px;font-weight:800}.auth-tab.active{background:var(--green);color:#052117}.auth-form{display:grid;gap:10px}label{color:var(--muted);font-weight:700;font-size:.9rem}input,select,textarea{width:100%;border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--text);border-radius:16px;padding:14px 15px;outline:none}select option{background:#10243a;color:white}textarea{min-height:150px;resize:vertical;line-height:1.5}.primary-btn,.ghost-btn,.danger-btn,.soft-btn{border:0;border-radius:17px;padding:14px 18px;font-weight:900;color:#062014;background:linear-gradient(135deg,var(--green),#8df7c0);box-shadow:0 12px 26px rgba(85,227,156,.18);transition:.16s}.primary-btn:hover,.module-card:hover,.answer-btn:hover,.choice-chip:hover{transform:translateY(-2px)}.full{width:100%;margin-top:8px}.ghost-btn,.soft-btn{background:rgba(255,255,255,.07);color:var(--text);border:1px solid var(--line);box-shadow:none}.danger-btn{background:rgba(255,107,122,.16);color:#ffd2d7;border:1px solid rgba(255,107,122,.35);box-shadow:none}.auth-actions{margin-top:14px}.tiny-note{color:var(--muted);font-size:.8rem;margin:14px 0 0}.app-shell{display:grid;grid-template-columns:280px minmax(0,1fr);min-height:100vh}.sidebar{border-right:1px solid var(--line);background:rgba(6,17,29,.72);backdrop-filter:blur(18px);padding:20px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:18px}.side-brand span{display:block;color:var(--muted);font-size:.83rem}.nav-list{display:grid;gap:8px}.nav-btn{width:100%;display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:17px;background:transparent;border:1px solid transparent;color:var(--muted);font-weight:850;text-align:left}.nav-btn.active,.nav-btn:hover{background:rgba(255,255,255,.07);border-color:var(--line);color:var(--text)}.nav-icon{width:30px;height:30px;border-radius:11px;display:grid;place-items:center;background:rgba(255,255,255,.08)}.side-logout{margin-top:auto;background:transparent;border:1px solid var(--line);color:var(--muted);border-radius:16px;padding:12px}.content{padding:22px;min-width:0}.topbar{border-radius:var(--radius);padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:20px}.mobile-menu{display:none;background:rgba(255,255,255,.08);border:1px solid var(--line);color:var(--text);border-radius:14px;padding:10px 12px}.top-stats{display:flex;align-items:center;gap:10px}.stat-pill,.avatar{border:1px solid var(--line);background:rgba(255,255,255,.07);border-radius:999px;padding:10px 13px;font-weight:900;white-space:nowrap}.avatar{width:42px;height:42px;display:grid;place-items:center;padding:0;background:linear-gradient(145deg,var(--purple),var(--blue))}.view-grid{display:grid;gap:18px}.dashboard-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}.hero-panel,.panel,.module-card,.lesson-card,.question-card{background:linear-gradient(160deg,rgba(19,44,72,.95),rgba(11,27,46,.95));border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-panel{padding:24px;overflow:hidden;position:relative}.hero-panel:after{content:"";position:absolute;right:-80px;top:-100px;width:260px;height:260px;border-radius:999px;background:rgba(85,227,156,.12)}.hero-panel p{color:var(--muted);line-height:1.55;max-width:720px}.action-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:16px}.metric{padding:15px;border-radius:20px;background:rgba(255,255,255,.06);border:1px solid var(--line)}.metric strong{display:block;font-size:1.45rem}.metric span{color:var(--muted);font-size:.84rem}.panel{padding:20px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.module-card{padding:18px;transition:.16s ease;position:relative;overflow:hidden;text-align:left;color:var(--text)}.module-card.highlight{border-color:rgba(85,227,156,.55);box-shadow:0 22px 60px rgba(85,227,156,.10)}.module-card .big-icon{font-size:2rem;margin-bottom:12px}.module-card p{color:var(--muted);line-height:1.45;font-size:.94rem}.progress-track{height:12px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden;border:1px solid var(--line)}.progress-fill{height:100%;background:linear-gradient(90deg,var(--green),var(--blue));width:0%;transition:.3s}.weak-list{display:grid;gap:10px}.weak-item{display:flex;justify-content:space-between;gap:10px;padding:12px;border-radius:16px;background:rgba(255,255,255,.06);border:1px solid var(--line)}.badge{font-size:.78rem;font-weight:900;padding:5px 9px;border-radius:999px;background:rgba(255,209,102,.15);color:#ffe09a;border:1px solid rgba(255,209,102,.24)}.lesson-card,.question-card{padding:20px}.lesson-card p,.question-card p{color:var(--muted);line-height:1.58}.lesson-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.topic-list{display:flex;flex-wrap:wrap;gap:10px}.choice-chip{border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--text);padding:11px 13px;border-radius:999px;font-weight:800;transition:.16s}.choice-chip.selected{background:rgba(85,227,156,.18);border-color:var(--green);color:#dffff0}.quiz-wrap{display:grid;gap:16px}.answer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.answer-btn{min-height:64px;text-align:left;border-radius:18px;border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--text);padding:14px;font-weight:850;transition:.16s}.answer-btn.correct{border-color:var(--green);background:rgba(85,227,156,.16)}.answer-btn.wrong{border-color:var(--red);background:rgba(255,107,122,.16)}.feedback{display:none;border-radius:18px;border:1px solid var(--line);padding:15px;line-height:1.5;background:rgba(255,255,255,.06)}.feedback.show{display:block}.feedback.good{border-color:rgba(85,227,156,.45)}.feedback.bad{border-color:rgba(255,107,122,.45)}.mediation-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px}.builder-zone{display:grid;gap:12px}.email-part{border:1px dashed rgba(169,185,202,.35);border-radius:18px;padding:14px;background:rgba(255,255,255,.04)}.email-part strong{display:block;margin-bottom:10px}.phrase-bank{display:grid;gap:8px}.phrase-btn{text-align:left;border:1px solid var(--line);background:rgba(255,255,255,.07);color:var(--text);padding:12px;border-radius:15px;margin:3px}.email-preview{min-height:260px;white-space:pre-wrap;line-height:1.6;background:rgba(0,0,0,.16);border:1px solid var(--line);border-radius:18px;padding:16px;color:#eaf5ff}.checklist{display:grid;gap:10px}.check-item{display:flex;align-items:center;gap:10px;padding:12px;border-radius:15px;background:rgba(255,255,255,.06);border:1px solid var(--line)}.check-item input{width:18px;height:18px}.exam-timer{font-size:2rem;font-weight:950;color:var(--yellow)}.score-card{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.score-row{padding:14px;border-radius:16px;background:rgba(255,255,255,.06);border:1px solid var(--line);display:flex;justify-content:space-between}.toast{position:fixed;right:22px;bottom:22px;padding:14px 16px;border-radius:18px;background:rgba(16,36,58,.95);border:1px solid var(--line);box-shadow:var(--shadow);z-index:50;transform:translateY(20px);opacity:0;pointer-events:none;transition:.22s}.toast.show{transform:translateY(0);opacity:1}@media(max-width:1050px){.dashboard-grid,.mediation-layout{grid-template-columns:1fr}.module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.metric-row{grid-template-columns:repeat(2,1fr)}}@media(max-width:760px){.app-shell{grid-template-columns:1fr}.sidebar{position:fixed;z-index:30;left:0;top:0;bottom:0;width:290px;transform:translateX(-105%);transition:.22s;height:100vh}.sidebar.open{transform:translateX(0)}.content{padding:14px}.topbar{padding:14px;border-radius:20px}.mobile-menu{display:block}.top-stats .stat-pill:first-child{display:none}.module-grid,.lesson-grid,.answer-grid,.score-card{grid-template-columns:1fr}.metric-row{grid-template-columns:1fr 1fr}h2{font-size:1.35rem}}@media(max-width:440px){.metric-row{grid-template-columns:1fr}.auth-card{padding:20px;border-radius:24px}.brand-mark{width:48px;height:48px}.top-stats{gap:6px}.stat-pill{font-size:.85rem;padding:8px 9px}}