/* CIAE Neural Academy v11.3 REAL - layout estable, IA conectada, voz y UI para estudiantes/familias */
:root{--cna-bg:#07111f;--cna-bg2:#0b1430;--cna-panel:rgba(15,23,42,.76);--cna-panel2:rgba(30,41,59,.72);--cna-border:rgba(148,163,184,.20);--cna-border2:rgba(96,165,250,.36);--cna-text:#eef6ff;--cna-muted:#9fb2d1;--cna-blue:#3b82f6;--cna-cyan:#22d3ee;--cna-violet:#8b5cf6;--cna-green:#22c55e;--cna-radius:24px;}
.cna-wrap,.cna-wrap *{box-sizing:border-box;}
.cna-wrap{width:min(1760px,calc(100vw - 32px));max-width:none;margin:22px auto;position:relative;left:50%;transform:translateX(-50%);overflow:visible;padding:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--cna-text);}
.cna-app{width:100%;min-height:calc(100vh - 96px);display:grid;grid-template-columns:280px minmax(0,1fr);gap:18px;padding:22px;border-radius:32px;overflow:visible;background:radial-gradient(circle at 35% -12%,rgba(59,130,246,.40),transparent 34%),radial-gradient(circle at 88% 8%,rgba(139,92,246,.35),transparent 28%),linear-gradient(135deg,#07111f 0%,#0b1430 52%,#130f2f 100%);box-shadow:0 35px 90px rgba(0,0,0,.38);border:1px solid rgba(255,255,255,.08);isolation:isolate;}
.cna-hidden,.cna-av-hidden{display:none!important;}
.cna-app button,.cna-app textarea,.cna-app input{font-family:inherit;}
.cna-sidebar{min-width:0;background:linear-gradient(180deg,rgba(15,23,42,.86),rgba(2,6,23,.76));border:1px solid var(--cna-border);border-radius:26px;padding:18px;display:flex;flex-direction:column;gap:16px;overflow:hidden;}
.cna-brand{display:flex;align-items:center;gap:12px;min-width:0;}
.cna-logo{width:56px;height:56px;border-radius:17px;background:linear-gradient(135deg,#5eead4,#3b82f6 50%,#7c3aed);display:grid;place-items:center;font-weight:900;font-size:26px;color:#fff;box-shadow:0 12px 28px rgba(59,130,246,.36);flex:0 0 56px;}
.cna-brand strong{display:block;font-size:25px;line-height:1;color:#fff;letter-spacing:-.02em}.cna-brand small{display:block;font-size:12px;color:var(--cna-muted);margin-top:3px}.cna-usercard{display:flex;align-items:center;gap:12px;min-width:0;padding:12px;border-radius:18px;background:rgba(2,6,23,.44);border:1px solid var(--cna-border);}
.cna-userav{width:42px;height:42px;flex:0 0 42px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#fbbf24,#fb7185,#a78bfa);color:#111827;font-weight:900;}
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var(--cna-border);color:#dbeafe;font-size:13px;font-weight:900}.cna-pulse-dot{width:9px;height:9px;border-radius:50%;background:#38bdf8;box-shadow:0 0 14px #38bdf8;animation:cna-blink 1.2s infinite}.cna-voice-wave{position:absolute;left:50%;bottom:76px;transform:translateX(-50%);z-index:6;display:flex;align-items:flex-end;gap:5px;height:30px;opacity:0;transition:.2s}.cna-voice-wave.active{opacity:1}.cna-voice-wave span{width:5px;border-radius:99px;background:linear-gradient(to top,#38bdf8,#8b5cf6);height:7px}.cna-voice-wave.active span{animation:cna-wave .55s infinite ease-in-out}.cna-voice-wave span:nth-child(2){animation-delay:.07s}.cna-voice-wave span:nth-child(3){animation-delay:.14s}.cna-voice-wave span:nth-child(4){animation-delay:.21s}.cna-voice-wave span:nth-child(5){animation-delay:.28s}.cna-voice-wave span:nth-child(6){animation-delay:.35s}.cna-voice-wave span:nth-child(7){animation-delay:.42s}@keyframes 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cna-shrink{from{width:100%}to{width:0}}.cna-loading{align-items:center;justify-content:center;gap:8px;color:#a9c4e8;font-size:13px}.cna-loading span{width:8px;height:8px;border-radius:50%;background:#60a5fa;animation:cna-dot .9s infinite}.cna-loading span:nth-child(2){animation-delay:.12s}.cna-loading span:nth-child(3){animation-delay:.24s}@keyframes cna-dot{50%{transform:translateY(-5px);opacity:.45}}.cna-input-area{display:flex;flex-direction:column;gap:10px}.cna-input-area textarea{width:100%;min-height:86px;resize:vertical;border:1px solid rgba(148,163,184,.22);background:rgba(255,255,255,.95);color:#111827;border-radius:18px;padding:15px;font-size:15px;outline:none}.cna-input-btns{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.cna-btn-send,.cna-btn-icon{border:1px solid rgba(148,163,184,.22);border-radius:14px;padding:11px 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small{color:var(--cna-muted)}.cna-guide-row-prog{display:flex;align-items:center;gap:8px}.cna-mini-bar{width:88px;height:6px;background:rgba(255,255,255,.14);border-radius:99px;overflow:hidden}.cna-mini-bar div{height:100%;border-radius:99px}.cna-tbl-btn{border:0;background:rgba(59,130,246,.22);color:#bfdbfe;border-radius:12px;padding:9px 13px;font-weight:900;cursor:pointer}.cna-tutors-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.cna-tutor-card{background:rgba(255,255,255,.07);border:1px solid var(--cna-border);border-radius:20px;padding:16px;display:flex;gap:16px;align-items:flex-start}.cna-tutor-card img{display:none}.cna-tutor-card h3{margin:0 0 8px;font-size:24px}.cna-tutor-card p{margin:0 0 8px;color:#c7d8f3;line-height:1.5}.cna-alert,.cna-login{background:rgba(15,23,42,.88);border:1px solid var(--cna-border);color:#eaf2ff;padding:18px;border-radius:18px}.cna-mailbox{max-width:960px;margin:20px auto;background:#07111f;color:#eaf2ff;border-radius:24px;padding:22px;font-family:Inter,system-ui,sans-serif}.cna-mail-item{border:1px solid var(--cna-border);background:rgba(255,255,255,.07);border-radius:16px;padding:14px;margin:10px 0}
@media(max-width:1500px){.cna-wrap{width:calc(100vw - 24px)}.cna-app{grid-template-columns:250px minmax(0,1fr);padding:18px}.cna-layout{grid-template-columns:280px minmax(300px,.9fr) minmax(390px,1.1fr);gap:14px}.cna-hero h1{font-size:clamp(30px,3.2vw,48px)}}
@media(max-width:1180px){.cna-app{grid-template-columns:1fr}.cna-sidebar{display:grid;grid-template-columns:220px minmax(0,1fr);align-items:center}.cna-usercard{display:none}.cna-nav{grid-template-columns:repeat(4,minmax(0,1fr))}.cna-nav button{text-align:center}.cna-stats{display:none}.cna-layout{grid-template-columns:300px minmax(0,1fr);grid-template-rows:auto auto}.cna-guides-col{grid-row:1/3}.cna-avatar-col{grid-column:2;min-height:360px}.cna-work-col{grid-column:2}.cna-avatar-stage{min-height:350px}.cna-av-wrap{width:min(65%,260px);bottom:80px}.cna-chat-history{max-height:300px}}
@media(max-width:820px){.cna-wrap{width:calc(100vw - 10px);margin:8px auto}.cna-app{padding:10px;border-radius:22px}.cna-sidebar{display:flex;padding:12px}.cna-brand{display:none}.cna-usercard{display:flex}.cna-nav{grid-template-columns:repeat(4,1fr);gap:6px}.cna-nav button{font-size:11px;padding:10px 5px;text-align:center}.cna-hero{grid-template-columns:1fr}.cna-hero-num{display:none}.cna-hero h1{font-size:27px}.cna-hero p{font-size:14px}.cna-layout{display:flex!important;flex-direction:column;min-height:auto}.cna-avatar-col{order:1;min-height:330px}.cna-guides-col{order:2}.cna-work-col{order:3}.cna-avatar-stage{min-height:310px}.cna-av-wrap{width:min(72%,230px);bottom:74px}.cna-guide-list{display:flex;flex-direction:row;overflow-x:auto;max-height:none}.cna-guide{min-width:230px}.cna-modes{grid-template-columns:1fr 1fr}.cna-chat-history{min-height:220px;max-height:330px}.cna-tutors-grid{grid-template-columns:1fr}.cna-guide-row{grid-template-columns:1fr}.cna-input-btns{gap:7px}.cna-btn-icon,.cna-btn-send{padding:10px 11px}}
@media(max-width:430px){.cna-nav button{font-size:10px}.cna-modes{display:flex;overflow-x:auto}.cna-modes button{flex:0 0 auto}.cna-avatar-col{min-height:280px}.cna-avatar-stage{min-height:260px}.cna-av-wrap{width:min(78%,200px);bottom:70px}.cna-guide{min-width:205px}.cna-work-head h2{font-size:22px}}