:root{color-scheme:dark;--bg: #0b0e14;--bg-soft: #111722;--card: #0f1521;--border: #1e2633;--text: #d7dee8;--muted: #8b97a8;--accent: #7c9cff;--accent-2: #59d499;--teza: #4f7cff;--antiteza: #e0794f;--sinteza: #59d499;--danger: #e0556b}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:radial-gradient(1200px 600px at 80% -10%,#16203a 0%,var(--bg) 55%);color:var(--text);font:15px/1.6 -apple-system,BlinkMacSystemFont,system-ui,Segoe UI,Roboto,sans-serif}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{color:#eaf0f8;line-height:1.25}.container{max-width:980px;margin:0 auto;padding:0 20px}.nav{position:sticky;top:0;z-index:10;background:#0b0e14d1;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.nav-inner{display:flex;align-items:center;gap:18px;height:60px}.brand{font-weight:700;font-size:17px;color:#fff;display:flex;gap:8px;align-items:center}.brand small{color:var(--muted);font-weight:400;font-size:12px}.nav .spacer{flex:1}.nav a.link{color:var(--muted);font-weight:500}.nav a.link.active,.nav a.link:hover{color:var(--text);text-decoration:none}.pill{font-size:12px;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:3px 10px}.btn{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--border);background:var(--bg-soft);color:var(--text);padding:9px 15px;border-radius:9px;font-weight:600;font-size:14px;cursor:pointer;transition:.12s}.btn:hover{border-color:#2c3a4f;background:#16202f}.btn.primary{background:linear-gradient(180deg,#5478ff,#3f63ee);border-color:#3f63ee;color:#fff}.btn.primary:hover{filter:brightness(1.07)}.btn.green{background:linear-gradient(180deg,#45cf8c,#33b277);border-color:#33b277;color:#04210f}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.sm{padding:6px 11px;font-size:13px}input,textarea,select{width:100%;background:#0a0f18;border:1px solid var(--border);color:var(--text);border-radius:9px;padding:10px 12px;font:inherit;outline:none}input:focus,textarea:focus,select:focus{border-color:var(--accent)}label{display:block;font-size:13px;color:var(--muted);margin:12px 0 5px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.course-card{display:flex;flex-direction:column;gap:8px;cursor:pointer;transition:.12s}.course-card:hover{transform:translateY(-2px);border-color:#2c3a4f}.course-card .cover{height:110px;border-radius:10px;background:linear-gradient(135deg,#1b2740,#0f1521);display:flex;align-items:center;justify-content:center;font-size:34px}.tag-row{display:flex;flex-wrap:wrap;gap:6px}.chip{font-size:11px;padding:2px 8px;border-radius:6px;background:#16202f;color:var(--muted);border:1px solid var(--border)}.chip.free{color:var(--sinteza);border-color:#235e44}.chip.paid{color:#ffd479;border-color:#6b5a23}.price{font-weight:700;color:#ffd479}.price.free{color:var(--sinteza)}.muted{color:var(--muted)}.row{display:flex;align-items:center;gap:10px}.between{justify-content:space-between}.triad{display:grid;gap:12px;margin:14px 0}.triad-step{border-left:3px solid var(--border);padding:12px 14px;border-radius:0 10px 10px 0;background:#0c1320}.triad-step.teza{border-left-color:var(--teza)}.triad-step.antiteza{border-left-color:var(--antiteza)}.triad-step.sinteza{border-left-color:var(--sinteza)}.triad-step h4{margin:0 0 4px;font-size:13px;letter-spacing:.08em;text-transform:uppercase}.triad-step.teza h4{color:var(--teza)}.triad-step.antiteza h4{color:var(--antiteza)}.triad-step.sinteza h4{color:var(--sinteza)}.triad-step p{margin:0;color:var(--text)}video{width:100%;border-radius:10px;background:#000;margin-top:10px}.lesson{border:1px solid var(--border);border-radius:11px;margin:10px 0;overflow:hidden}.lesson-head{display:flex;align-items:center;gap:10px;padding:12px 14px;cursor:pointer;background:#0d1421}.lesson-head:hover{background:#111a2b}.lesson-body{padding:4px 14px 14px;border-top:1px solid var(--border)}.state-dot{width:9px;height:9px;border-radius:50%;background:#33415a;flex:none}.state-dot.started{background:var(--antiteza)}.state-dot.completed{background:var(--accent)}.state-dot.synthesized{background:var(--sinteza)}.banner{border-radius:11px;padding:12px 14px;margin:12px 0;border:1px solid var(--border)}.banner.ok{background:#0e2a1c;border-color:#235e44;color:#b9f0d2}.banner.warn{background:#2a210e;border-color:#6b5a23;color:#f0e0b9}.banner.err{background:#2a0e14;border-color:#6b2330;color:#f0b9c4}.banner.lock{background:#11192a;border-color:#2c3a4f}.cert{border:1px solid #2c3a4f;border-radius:16px;padding:26px;background:linear-gradient(160deg,#14213d,#0d1421);text-align:center}.cert .seal{font-size:46px}.cert .name{font-size:22px;font-weight:700;color:#fff;margin:8px 0}.cert .verify{font-size:12px;color:var(--muted);word-break:break-all;margin-top:14px}.stars{color:#ffd479;letter-spacing:2px}hr{border:none;border-top:1px solid var(--border);margin:18px 0}.center{text-align:center}.spin{display:inline-block;width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:s .7s linear infinite}@keyframes s{to{transform:rotate(360deg)}}code.mono{font-family:ui-monospace,monospace;font-size:12px;color:var(--accent)}