.auth-shell{display:grid;grid-template-columns:minmax(320px,.85fr) 1.15fr;min-height:100vh}

/* Panel lateral */
.auth-aside{background:var(--ink);color:#fff;padding:40px 48px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
.auth-aside::after{content:'';position:absolute;width:420px;height:420px;border-radius:50%;background:var(--accent);opacity:.18;right:-140px;bottom:-120px}
.auth-aside .brand{color:#fff}
.auth-aside .brand em{color:#e0a48f}
.auth-aside-copy h1{font-size:clamp(34px,3.6vw,50px)}
.auth-aside-copy h1 em{color:#e0a48f}
.auth-aside-copy p{margin-top:20px;color:#b9b6ae;max-width:360px}
.auth-aside-foot{font-size:12.5px;color:#8f8c85;position:relative;z-index:1}
.auth-aside-copy,.auth-aside .brand{position:relative;z-index:1}

/* Tarjeta */
.auth-main{display:grid;place-items:center;padding:40px 24px}
.auth-card{width:100%;max-width:420px}
.auth-back{display:inline-block;font-size:13px;color:var(--muted);margin-bottom:28px;transition:color .2s}
.auth-back:hover{color:var(--accent)}
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;background:var(--soft);border-radius:999px;padding:4px;margin-bottom:28px}
.auth-tabs button{padding:10px;border-radius:999px;font-size:14px;font-weight:500;color:var(--muted);transition:background .2s,color .2s}
.auth-tabs button[aria-selected=true]{background:var(--paper);color:var(--ink);box-shadow:0 1px 3px rgba(29,28,26,.12)}
.auth-form h2{font-size:30px;margin-bottom:24px}
.auth-form[hidden]{display:none}

.fld{margin-bottom:18px}
.fld label{display:block;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:7px}
.fld input{width:100%;padding:13px 16px;border:1px solid var(--line);border-radius:12px;background:var(--paper);font-size:15px;color:var(--ink);transition:border-color .2s,box-shadow .2s}
.fld input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.fld.invalid input{border-color:#b3261e}
.pass{position:relative}
.pass input{padding-right:84px}
.pass-toggle{position:absolute;right:6px;top:50%;transform:translateY(-50%);padding:7px 12px;font-size:12.5px;font-weight:500;color:var(--ink-2);border-radius:8px}
.pass-toggle:hover{background:var(--soft)}
.hint{font-size:12.5px;color:var(--muted);margin-top:6px}
.err{font-size:12.5px;color:#b3261e;margin-top:6px}
.err:empty{display:none}

.auth-form .btn{margin-top:8px}
.auth-form .btn[disabled]{opacity:.6;cursor:progress;transform:none}
.switch{margin-top:22px;font-size:14px;color:var(--muted);text-align:center}
.switch a{color:var(--accent);font-weight:500}
.switch a:hover{text-decoration:underline}

.notice{padding:13px 16px;border-radius:12px;font-size:14px;margin-bottom:22px;background:var(--accent-soft);color:#6b2d1d}
.notice.ok{background:#e4efe4;color:#24491f}
.notice.error{background:#f9e3e0;color:#7a1c15}
.notice[hidden]{display:none}

@media(max-width:860px){
  .auth-shell{grid-template-columns:minmax(0,1fr)}
  .auth-aside{padding:24px 24px 28px;gap:24px}
  .auth-aside-copy p,.auth-aside-foot{display:none}
  .auth-aside-copy h1{font-size:28px}
  .auth-aside::after{display:none}
  .auth-main{align-items:start;padding-top:28px}
}

.lead-sm{color:var(--muted);font-size:14.5px;margin:-8px 0 22px}
.note-box{margin-top:26px;padding:14px 16px;border-radius:12px;background:var(--soft);font-size:13.5px;color:var(--ink-2);text-align:left;line-height:1.5}
.note-box a{text-decoration:underline}
#invalid .btn{margin-top:6px}