:root{--onyx:#020202;--candy-blue:#b2d5e5;--card:#101010;--text:#f7f7f7;--muted:#bdbdbd;--radius:16px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--onyx);color:var(--text);min-height:100vh;font-family:Inter,Segoe UI,sans-serif}button{cursor:pointer;border:none}input,textarea{outline:none}.password-generator{flex-direction:column;gap:20px;width:100%;max-width:930px;margin-left:auto;margin-right:auto;display:flex}.password-generator__header h2{color:var(--candy-blue);margin-bottom:14px;font-size:clamp(2rem,5vw,3rem);line-height:1.05}.password-generator__header p{color:var(--muted);font-size:1rem}.password-generator__output{grid-template-columns:minmax(0,1fr) auto;gap:12px;display:grid}.password-generator__password{background:var(--card);color:var(--muted);overflow-wrap:anywhere;border:1px solid #b2d5e526;border-radius:12px;align-items:center;min-height:52px;padding:0 16px;display:flex}.password-generator__copy,.password-generator__generate{background:var(--candy-blue);color:#000;border-radius:12px;font-weight:700;transition:all .3s}.password-generator__copy{min-height:52px;padding:0 22px}.password-generator__copy:disabled{cursor:default;opacity:.65}.password-generator__length-row{justify-content:space-between;align-items:center;font-weight:700;display:flex}.password-generator__range{accent-color:var(--candy-blue);width:100%;margin:0}.password-generator__options{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.password-generator__options label{background:#0d0d0d;border-radius:12px;justify-content:flex-start;align-items:center;gap:12px;min-height:52px;margin:0;padding:0 18px;line-height:1;display:flex}.password-generator__options input[type=checkbox]{accent-color:var(--candy-blue);flex:0 0 16px;width:16px;height:16px;margin:0}.password-generator__strength{flex-direction:column;gap:12px;display:flex}.password-generator__strength p{font-weight:700}.password-generator__strength strong{color:var(--candy-blue);letter-spacing:2px;margin-left:10px}.password-generator__strength-track{background:#0d0d0d;border-radius:999px;height:12px;overflow:hidden}.password-generator__strength-track span{height:100%;transition:width .3s;display:block}.password-generator__generate{width:100%;min-height:50px}.password-generator__copy:hover:not(:disabled),.password-generator__generate:hover{transform:translateY(-2px);box-shadow:0 0 25px #b2d5e580}@media (width<=760px){.password-generator{max-width:none}.password-generator__options{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=520px){.password-generator__output,.password-generator__options{grid-template-columns:1fr}.password-generator__copy{width:100%}}.password-checker{flex-direction:column;gap:20px;width:100%;max-width:930px;margin-left:auto;margin-right:auto;display:flex}.password-checker__header h2{color:var(--candy-blue);margin-bottom:14px;font-size:clamp(2rem,5vw,3rem);line-height:1.05}.password-checker__header p{color:var(--muted);font-size:1rem}.password-checker__field-header{justify-content:space-between;align-items:center;gap:14px;display:flex}.password-checker__field-header label{font-weight:700}.password-checker__field-header button{color:var(--text);background:#0d0d0d;border:1px solid #b2d5e533;border-radius:12px;min-height:40px;padding:0 18px;transition:all .3s}.password-checker__input{background:var(--card);color:var(--text);resize:vertical;border:1px solid #b2d5e526;border-radius:12px;width:100%;min-height:128px;padding:18px}.password-checker__input--hidden{-webkit-text-security:disc}.password-checker__input::placeholder{color:var(--muted)}.password-checker__strength{flex-direction:column;gap:12px;display:flex}.password-checker__strength p{font-weight:700}.password-checker__strength strong{color:var(--candy-blue);letter-spacing:2px;margin-left:10px}.password-checker__strength-track{background:#0d0d0d;border-radius:999px;height:12px;overflow:hidden}.password-checker__strength-track span{height:100%;transition:width .3s,background .3s;display:block}.password-checker__suggestions{flex-direction:column;gap:36px;display:flex}.password-checker__suggestions p{font-weight:700}.password-checker__suggestions ul{background:#0d0d0d;border-radius:999px;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;min-height:32px;padding:8px 16px;list-style:none;display:grid}.password-checker__suggestions li{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:.9rem;overflow:hidden}.password-checker__suggestions li.is-complete{color:var(--candy-blue)}.password-checker__field-header button:hover{transform:translateY(-2px);box-shadow:0 0 25px #b2d5e580}@media (width<=760px){.password-checker{max-width:none}.password-checker__suggestions{gap:18px}.password-checker__suggestions ul{border-radius:12px;grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=520px){.password-checker__field-header{flex-direction:column;align-items:stretch}.password-checker__suggestions ul{grid-template-columns:1fr}}.module{flex-direction:column;gap:20px;width:100%;max-width:930px;margin-left:auto;margin-right:auto;display:flex}.module__header h2{color:var(--candy-blue);margin-bottom:14px;font-size:clamp(2rem,5vw,3rem);line-height:1.05}.module__header p{color:var(--muted);font-size:1rem}.module__tabs{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.module__tabs button{color:var(--text);text-align:left;background:#0d0d0d;border:1px solid #b2d5e526;border-radius:12px;flex-direction:column;gap:8px;min-height:96px;padding:18px;transition:all .3s;display:flex}.module__tabs button.is-active,.module__tabs button:hover{border-color:#b2d5e573;transform:translateY(-2px);box-shadow:0 0 25px #b2d5e514}.module__tabs span{font-weight:700}.module__tabs small{color:var(--muted);line-height:1.45}.module__lessons{flex-direction:column;gap:16px;display:flex}.module__actions{justify-content:space-between;align-items:center;gap:14px;display:flex}.module__actions h3{font-size:1.05rem}.module__actions button{color:var(--text);background:#0d0d0d;border:1px solid #b2d5e533;border-radius:12px;min-height:40px;padding:0 18px;font-weight:700;transition:all .3s}.module__actions button:hover{transform:translateY(-2px);box-shadow:0 0 25px #b2d5e514}.module__empty{color:var(--muted);background:#0d0d0d;border:1px solid #b2d5e526;border-radius:14px;padding:18px}.module__lesson{background:var(--card);border:1px solid #b2d5e526;border-radius:14px;padding:18px}.module__lesson h3{margin-bottom:12px;font-size:1.05rem}.module__lesson p{color:var(--muted);line-height:1.5}.module__lesson h4{margin:20px 0 14px;font-size:1rem}.module__answers{flex-direction:column;gap:12px;display:flex}.module__answers button{color:var(--text);text-align:left;background:#111;border:1px solid #b2d5e52e;border-radius:14px;min-height:46px;padding:0 16px;font-weight:700;transition:all .25s}.module__answers button:hover{background:#b2d5e51a}.module__answers button.is-selected{border-color:#b2d5e573}.module__answers button.is-correct{border-color:#22c55e}.module__answers button.is-wrong{border-color:#ef4444}.module__feedback{background:#0d0d0d;border:1px solid #b2d5e526;border-radius:12px;margin-top:14px;padding:14px}.module__feedback strong{color:var(--candy-blue);margin-bottom:8px;display:block}@media (width<=760px){.module{max-width:none}.module__tabs{grid-template-columns:1fr}.module__actions{flex-direction:column;align-items:stretch}}.app{max-width:1300px;margin:auto;padding:40px}header{text-align:center;margin-bottom:40px}header h1{color:var(--candy-blue);font-size:3rem}header p{color:var(--muted);margin-top:10px}section{background:var(--card);border-radius:var(--radius);border:1px solid #b2d5e526;margin-bottom:30px;padding:28px;box-shadow:0 0 20px #b2d5e50d}