.catalog-hero{padding:24px 0}
.filter-bar{display:grid;gap:12px;padding:16px;border-radius:16px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.1)}
.filters-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.filter-bar label{color:#fff;display:grid;gap:6px}
.filter-bar select{width:100%;padding:10px 12px;border-radius:12px;border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.18);color:#fff}
.filters-actions{display:flex;gap:8px;justify-content:flex-end}
.cat-grid{margin-top:16px}
.course-card.cat{display:block}
.course-card.cat .thumb{position:relative;height:160px;overflow:hidden}
.course-card.cat .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.course-card.cat .badge{position:absolute;top:10px;left:10px;padding:6px 10px;border-radius:999px;font-size:12px}
.badge.free{background:rgba(37,226,255,.2);border:1px solid rgba(37,226,255,.4);color:#e1fbff}
.course-card.cat h3{margin:12px}
.course-card.cat .meta{display:flex;align-items:center;justify-content:space-between;margin:0 12px 12px}
.course-card.cat .cta-mini{color:#ffd93d}
:root{--bg-grad:linear-gradient(135deg,#667eea 0%,#764ba2 100%);--card-glass:rgba(255,255,255,.1);--card-glass-2:rgba(255,255,255,.15);--text:#fff;--muted:rgba(255,255,255,.85);--primary-grad:linear-gradient(45deg,#ff6b6b,#ffd93d)}
*{box-sizing:border-box}body{margin:0;font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Ubuntu,'Helvetica Neue',Arial;background:var(--bg-grad);color:var(--text);min-height:100vh;overflow-x:hidden}
.container{max-width:1200px;margin:0 auto;padding:24px}
.site-header{position:sticky;top:0;background:var(--card-glass);backdrop-filter: blur(10px);border-bottom:1px solid rgba(255,255,255,.2);z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.logo{font-weight:800;color:#fff;text-decoration:none;letter-spacing:.5px;background:var(--primary-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
nav a{margin-right:16px;color:#fff;text-decoration:none}
nav .cta{color:#fff;background:var(--primary-grad);padding:10px 16px;border-radius:50px;box-shadow:0 4px 15px rgba(255,107,107,.3)}
.page{padding-top:28px}
.hero{padding:96px 0}
.hero-gradient{background:transparent}
.hero-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:center}
.badge{display:inline-block;background:rgba(124,92,255,.2);color:#c7b9ff;border:1px solid rgba(124,92,255,.5);padding:6px 10px;border-radius:999px;font-size:12px;margin-bottom:12px}
.hero-copy h1{font-size:52px;line-height:1.06;margin:0 0 12px}
.hero-copy h1 span{color:var(--primary-2)}.hero-copy h1 em{color:var(--primary);font-style:normal}
.hero-copy p{color:var(--muted);max-width:58ch}
.hero-cta{display:flex;gap:12px;margin-top:18px}
.metrics{display:flex;gap:24px;margin-top:24px;color:#c7cbe0}
.metrics strong{font-size:22px;display:block}
.hero-media{position:relative;min-height:340px}
.phone-mock{position:absolute;right:0;top:0;width:280px;border-radius:24px;overflow:hidden;border:1px solid rgba(255,255,255,.08);transform:rotate(-2deg)}
.phone-mock img{display:block;width:100%;height:100%;object-fit:cover}
.phone-mock .glow{position:absolute;inset:auto -10% -10% -10%;height:60px;background:radial-gradient(closest-side,rgba(124,92,255,.5),transparent)}
.card-float{position:absolute;width:160px;border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.08)}
.card-float img{display:block;width:100%;height:100%;object-fit:cover}
.card-float.a1{left:0;bottom:40px;transform:rotate(3deg)}
.card-float.a2{right:20px;bottom:-20px;transform:rotate(-6deg)}
.btn{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.3);border-radius:50px;padding:12px 18px;text-decoration:none;display:inline-block;backdrop-filter:blur(10px)}
.btn-primary{background:var(--primary-grad);color:#fff;border-color:transparent;box-shadow:0 4px 15px rgba(255,107,107,.3)}
.btn-secondary{background:rgba(255,255,255,.2)}
.grid{display:grid;gap:16px}
.features{padding:80px 0;background:rgba(255,255,255,.05);backdrop-filter:blur(10px)}
.features .grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));padding:0}
.card{background:var(--card-glass);padding:16px;border:1px solid rgba(255,255,255,.2);border-radius:20px}
.feature{background:var(--card);padding:16px;border:1px solid rgba(255,255,255,.06);border-radius:16px}
.feature .icon{font-size:20px;margin-bottom:8px}

/* Sección profesional de features (como el ejemplo) */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin-top:3rem}
.feature-card{background:var(--card-glass);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:20px;padding:2rem;text-align:center;transition:all .3s ease;cursor:pointer}
.feature-card:hover{transform:translateY(-10px);background:rgba(255,255,255,.15);box-shadow:0 20px 40px rgba(0,0,0,.2)}
.feature-icon{width:60px;height:60px;background:var(--primary-grad);border-radius:15px;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;font-size:1.5rem}
.feature-card h3{color:#fff;font-size:1.3rem;font-weight:700;margin-bottom:1rem}
.feature-card p{color:rgba(255,255,255,.8);line-height:1.6}

/* Títulos de sección */
.section-title{margin:0;font-size:32px;letter-spacing:.3px}
.section-subtitle{color:var(--muted);margin:4px 0 8px}
.courses-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));}
.course-card{background:var(--card-glass);border:1px solid rgba(255,255,255,.2);border-radius:20px;overflow:hidden;text-decoration:none;color:#fff}
.course-card img{width:100%;height:140px;object-fit:cover}
.course-card h3{margin:12px}
.course-card .price{margin:0 12px 12px;color:var(--accent)}
.course .cover{width:100%;max-height:360px;object-fit:cover;border-radius:16px;border:1px solid rgba(255,255,255,.06)}
.auth-form{display:grid;gap:12px;max-width:480px}
.auth-hero{display:grid;place-items:center;min-height:78vh;padding:56px 0;position:relative}
.auth-card{position:relative;max-width:560px;width:100%;padding:32px;border-radius:24px;border:1px solid rgba(255,255,255,.25);background:linear-gradient(180deg,rgba(255,255,255,.14),rgba(255,255,255,.08));box-shadow:0 30px 60px rgba(0,0,0,.35);overflow:hidden}
.auth-card::before{content:"";position:absolute;inset:-1px;z-index:-1;border-radius:26px;background:conic-gradient(from 180deg,rgba(255,107,107,.5),rgba(255,217,61,.5),rgba(118,75,162,.45));filter:blur(18px);opacity:.5}
.auth-header{text-align:center;margin-bottom:16px}
.auth-header h1{margin:6px 0 4px}
.auth-header p{color:var(--muted)}
.auth-icon{width:60px;height:60px;border-radius:16px;display:inline-grid;place-items:center;background:var(--primary-grad);color:#08131c;box-shadow:0 10px 20px rgba(0,0,0,.2)}
.auth-form.fancy label{color:#fff;font-weight:600}
.auth-form.fancy input{width:100%;padding:14px 14px;border-radius:14px;border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.18);color:#fff}
.auth-form.fancy input:focus{outline:none;border-color:#ffd93d;box-shadow:0 0 0 3px rgba(255,217,61,.25)}
.auth-form.fancy .btn-primary{width:100%;padding:14px 18px;background:var(--primary-grad);border-radius:28px;transition:transform .2s ease, box-shadow .2s ease}
.auth-form.fancy .btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,107,107,.35)}
.auth-form.fancy .btn-primary:active{transform:translateY(0)}
.auth-form.fancy .btn{font-weight:700}
.alt-link{margin-top:8px;color:var(--muted)}
.alt-link a{color:#ffd93d;text-decoration:none}
.alert{padding:12px 14px;border-radius:12px;margin-bottom:12px}
.alert-error{background:rgba(255,107,107,.12);border:1px solid rgba(255,107,107,.35);color:#ffe1e1}
.alert-success{background:rgba(37,226,255,.12);border:1px solid rgba(37,226,255,.35);color:#d6fbff}
.bg-bubbles{position:absolute;inset:0;overflow:hidden;z-index:-1}
.bg-bubbles span{position:absolute;display:block;width:120px;height:120px;background:rgba(255,255,255,.08);bottom:-160px;border-radius:50%;animation:rise 14s infinite ease-in}
.bg-bubbles span:nth-child(2){left:20%;animation-delay:2s}
.bg-bubbles span:nth-child(3){left:40%;animation-delay:4s}
.bg-bubbles span:nth-child(4){left:60%;animation-delay:6s}
.bg-bubbles span:nth-child(5){left:80%;animation-delay:8s}
@keyframes rise{0%{transform:translateY(0) scale(1)}50%{transform:translateY(-50vh) scale(1.05)}100%{transform:translateY(-100vh) scale(1)}}
.tabs a{margin-right:12px;color:var(--muted);text-decoration:none}
.site-footer{border-top:1px solid rgba(255,255,255,.06);color:var(--muted)}
.glass{box-shadow:0 10px 30px rgba(0,0,0,.2)}
.how{padding:40px 24px}
.how h2{margin:0 0 12px}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;list-style:none;padding:0}
.steps li{background:var(--card);padding:14px;border:1px solid rgba(255,255,255,.06);border-radius:16px}
.steps li span{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:999px;margin-right:8px;background:linear-gradient(90deg,var(--primary),var(--primary-2));color:#05131a}
.cta-large{padding:48px 24px;margin:24px 0;background:linear-gradient(90deg,rgba(124,92,255,.15),rgba(37,226,255,.12));border:1px solid rgba(255,255,255,.06);border-radius:16px;text-align:center}