/* Acceso alumno · mismo estilo que «Mis titulaciones» */
:root{--blue-900:#0d2340;--blue-800:#163b8c;--teal-700:#0f766e;--teal-600:#0f8c81;--gold-500:#d4af5a;--gold-400:#e6c97a;--text:#13324a;--muted:#60798a;--border:#d5e2ea;--shadow:0 18px 42px rgba(13,35,64,.08)}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{min-height:100vh;font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:var(--text);background:radial-gradient(circle at 12% 0%,rgba(30,58,138,.10),transparent 24rem),radial-gradient(circle at 100% 0%,rgba(15,118,110,.10),transparent 20rem),linear-gradient(180deg,#f7fbff 0%,#eef4f8 42%,#edf3f6 100%)}
body::before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.22;background-image:linear-gradient(rgba(23,58,143,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(23,58,143,.04) 1px,transparent 1px);background-size:34px 34px;mask-image:linear-gradient(to bottom,#000,transparent 80%)}
.page-header{position:relative;background:linear-gradient(120deg,var(--blue-800) 0%,var(--blue-900) 55%,var(--teal-700) 118%);color:#fff;border-bottom:4px solid var(--gold-500);box-shadow:0 14px 34px rgba(13,35,64,.16);overflow:hidden}
.page-header::before{content:"";position:absolute;inset:0;opacity:.16;background:radial-gradient(circle at 12% 18%,rgba(255,255,255,.6) 1px,transparent 1.6px);background-size:26px 26px;mask-image:linear-gradient(90deg,transparent 0%,#000 18%,#000 80%,transparent 100%)}
.page-header-inner{position:relative;max-width:620px;margin:0 auto;padding:20px 18px 22px}
.brand-lockup{display:flex;align-items:center;gap:14px;min-width:0}
.brand-logo{width:58px;height:58px;object-fit:contain;filter:drop-shadow(0 10px 18px rgba(0,0,0,.22));flex:0 0 auto}
.brand-copy{min-width:0}
.eyebrow{font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;color:#d9ebff;font-weight:800;margin-bottom:2px}
.brand-name{font-size:1.14rem;font-weight:800;line-height:1.15;color:#fff}
.page-title{font-size:2rem;line-height:1.08;font-weight:900;letter-spacing:-.03em;margin:6px 0 0;color:#fff}
.wrap{position:relative;max-width:620px;margin:0 auto;padding:26px 18px 40px}
.card{background:rgba(255,255,255,.96);border:1px solid var(--border);border-radius:24px;padding:28px 26px;box-shadow:var(--shadow)}
label{display:block;font-weight:800;font-size:.95rem;color:#204863;margin:15px 0 7px}
input,select{width:100%;border:1px solid #c9d8e3;border-radius:14px;padding:13px 14px;font:inherit;font-size:16px;background:#fbfdff;color:var(--text);transition:border-color .15s,box-shadow .15s}
input:focus,select:focus{outline:none;border-color:var(--teal-600);box-shadow:0 0 0 4px rgba(15,140,129,.14);background:#fff}
input[type=checkbox]{width:auto;accent-color:var(--teal-600)}
button{font:inherit;border:0;border-radius:14px;padding:13px 16px;font-size:16px;font-weight:800;cursor:pointer}
.submit{width:100%;margin-top:20px;padding:15px 20px;color:#fff;font-weight:900;background:linear-gradient(135deg,#11998e,#0f766e);box-shadow:0 12px 24px rgba(15,118,110,.24);border:1px solid rgba(255,255,255,.18);transition:transform .18s,box-shadow .18s}
.submit:hover,.submit:focus-visible{transform:translateY(-1px);box-shadow:0 16px 28px rgba(15,118,110,.28)}
button:disabled{opacity:.55;cursor:wait;transform:none}
.link[hidden]{display:none!important}
.link{display:block;width:100%;padding:12px 2px;background:none;color:var(--teal-700);text-align:center;font-weight:800}
.link:hover{text-decoration:underline}
.back-to-login{text-align:left;padding:0 0 6px}
.msg{min-height:0;margin:12px 0 0;color:#a61e46;font-weight:700;white-space:pre-wrap}
.msg:empty{margin:0}
.hint{background:#eaf5f5;border:1px solid #cfe6e3;border-radius:16px;padding:15px;margin:12px 0;font-size:.92rem;color:#1d4560}
.muted{font-size:.84rem;color:var(--muted)}
#register,#reset,#recover,#invite{display:none}
a{color:var(--teal-700)}
#invite .submit{margin-bottom:4px}
#alert{background:linear-gradient(135deg,#102d4b,#163b8c);border:1px solid rgba(212,175,90,.5);border-left:4px solid var(--gold-500);color:#fff}
#alert p{margin:0 0 14px;line-height:1.6;color:#e7f0f8}
#contactWhatsapp{display:inline-flex;align-items:center;justify-content:center;gap:8px;max-width:100%;padding:11px 16px;border-radius:999px;background:linear-gradient(135deg,var(--gold-400),var(--gold-500));color:#16324a;text-decoration:none;font-size:.95rem;font-weight:850;text-align:center}
#alert[hidden]{display:none!important}
/* Prueba gratuita */
.prueba-card{margin:4px 0 6px;padding:18px 20px;border-radius:20px;color:#fff;background:linear-gradient(135deg,#0d2340,#163b8c 60%,#0f766e);border:1px solid rgba(212,175,90,.5);box-shadow:0 14px 30px rgba(13,35,64,.16)}
.prueba-tag{display:inline-flex;padding:4px 12px;border-radius:999px;font-size:.78rem;font-weight:900;letter-spacing:.06em;text-transform:uppercase;color:#16324a;background:linear-gradient(135deg,var(--gold-400),var(--gold-500))}
.prueba-card ul{list-style:none;margin:12px 0 8px;padding:0;display:grid;gap:6px}
.prueba-card li{display:flex;gap:9px;font-weight:750;color:#f3faff}
.prueba-card li::before{content:'✓';color:#75ead5;font-weight:900}
.prueba-card p{margin:0;font-size:.84rem;color:#c9dcef}
/* Pie */
.footer-box{margin-top:18px;padding:16px 18px;border-radius:20px;border:1px solid var(--border);background:rgba(255,255,255,.85);box-shadow:var(--shadow);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.footer-copy{margin:0;color:#546f7e}
.footer-copy strong{color:#0f2f4e}
.footer-whatsapp{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;text-decoration:none;font-weight:850;font-size:.94rem;color:#16324a;background:linear-gradient(135deg,var(--gold-400),var(--gold-500));box-shadow:0 10px 18px rgba(212,175,90,.24);white-space:nowrap}
@media (max-width:620px){
  .page-header-inner{padding:18px 16px 20px}
  .brand-logo{width:50px;height:50px}
  .brand-name{font-size:1.03rem}
  .page-title{font-size:1.7rem}
  .wrap{padding:18px 12px 32px}
  .card{padding:22px 18px;border-radius:20px}
  .footer-whatsapp{width:100%;justify-content:center}
}
form>label:first-child,#pruebaBox+label{margin-top:0}
#pruebaBox:not([hidden])+label{margin-top:16px}
.alert-actions{display:flex;flex-wrap:wrap;gap:10px}
.alert-btn{padding:11px 16px;border-radius:999px;font-size:.95rem;font-weight:850;color:#16324a;background:linear-gradient(135deg,var(--gold-400),var(--gold-500))}
.alert-btn.alt{color:#fff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.35)}
#contactWhatsapp[hidden]{display:none}