:root {
  --noche: #08131F; --marea: #0D1B2A; --casco: #13243C; --oceano: #2EA8FF; --bruma: #A7D8FF;
  --arena: #F5F7FA; --tinta-2: #B9C7D8; --tinta-3: #8FA3BC; --linea: rgba(167, 216, 255, 0.18);
  --ok: #35D07F; --error: #FF8A8E; --aviso: #FFB547;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  min-height: 100dvh; display: flex; flex-direction: column;
  background: radial-gradient(1200px 600px at 80% -10%, #12324F 0%, var(--noche) 60%) fixed, var(--noche);
  color: var(--arena); font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased;
}
a { color: var(--bruma); }
a:hover { color: var(--arena); }
:focus-visible { outline: 2px solid var(--bruma); outline-offset: 3px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; background: var(--arena); color: var(--noche); padding: 8px 14px; z-index: 10; }
.top { display: flex; align-items: center; gap: 12px; padding: 14px max(16px, env(safe-area-inset-left)); }
.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; margin-right: auto; text-decoration: none; color: var(--arena); font-weight: 600; letter-spacing: .08em; }
.brand b { color: var(--oceano); font-weight: 600; }
.lang button { min-width: 44px; min-height: 44px; border: 0; background: none; color: var(--tinta-3); font: inherit; font-size: 14px; letter-spacing: .06em; cursor: pointer; }
.lang button[aria-pressed="true"] { color: var(--arena); text-decoration: underline 2px var(--oceano); text-underline-offset: 7px; }
main { flex: 1; width: 100%; max-width: 460px; margin: 0 auto; padding: 8px 16px 40px; }
main:focus { outline: none; }
h1 { font-size: 28px; line-height: 1.15; margin: 18px 0 8px; font-weight: 600; letter-spacing: -.01em; }
h2 { font-size: 18px; margin: 28px 0 8px; }
.lead { color: var(--tinta-2); margin: 0 0 22px; }
.card { background: linear-gradient(180deg, rgba(30, 55, 88, .55), rgba(16, 32, 54, .7)); border: 1px solid var(--linea); border-radius: 4px 18px 4px 4px; padding: 22px; }
form { display: grid; gap: 14px; }
label { display: grid; gap: 6px; font-size: 14px; color: var(--tinta-2); }
input[type=email], input[type=password], input[type=text] {
  width: 100%; min-height: 48px; padding: 10px 12px; border-radius: 4px; border: 1px solid rgba(167, 216, 255, .35);
  background: var(--noche); color: var(--arena); font: inherit; font-size: 16px;
}
input:focus { border-color: var(--bruma); }
input.code { font-size: 24px; letter-spacing: .3em; text-align: center; font-variant-numeric: tabular-nums; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 20px; border: 0; border-radius: 2px 14px 2px 2px; background: var(--oceano); color: var(--noche); font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--bruma); }
.btn[disabled] { opacity: .6; cursor: progress; }
.btn.ghost { background: transparent; color: var(--arena); border: 1px solid rgba(167, 216, 255, .4); }
.btn.ghost:hover { background: rgba(167, 216, 255, .1); }
.btn.danger { background: transparent; color: var(--error); border: 1px solid rgba(255, 138, 142, .45); }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.links { display: grid; gap: 4px; margin-top: 16px; font-size: 15px; }
.links a { display: inline-flex; min-height: 44px; align-items: center; }
.or { display: flex; align-items: center; gap: 10px; color: var(--tinta-3); font-size: 13px; margin: 18px 0; }
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--linea); }
.msg { border-radius: 4px; padding: 10px 12px; font-size: 15px; }
.msg:empty { display: none; }
.msg.error { background: rgba(255, 90, 95, .12); color: var(--error); border: 1px solid rgba(255, 90, 95, .35); }
.msg.ok { background: rgba(53, 208, 127, .1); color: var(--ok); border: 1px solid rgba(53, 208, 127, .35); }
.hint { font-size: 13px; color: var(--tinta-3); margin: 0; }
.qr { display: grid; place-items: center; background: #fff; border-radius: 8px; padding: 12px; width: 220px; height: 220px; margin: 6px auto 4px; }
.qr img { width: 196px; height: 196px; image-rendering: pixelated; }
.secret { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 15px; word-break: break-all; background: var(--noche); padding: 10px 12px; border-radius: 4px; border: 1px dashed var(--linea); user-select: all; }
.codes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 16px; padding: 0; margin: 10px 0; list-style: none; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 17px; }
.list { list-style: none; padding: 0; margin: 8px 0; display: grid; gap: 8px; }
.list li { display: flex; align-items: center; gap: 10px; justify-content: space-between; border: 1px solid var(--linea); border-radius: 4px; padding: 10px 12px; }
.list small { display: block; color: var(--tinta-3); font-size: 13px; }
.status { display: grid; gap: 6px; margin: 0; padding: 0; list-style: none; }
.status li::before { content: "✓ "; color: var(--ok); }
.status li.off::before { content: "• "; color: var(--aviso); }
details { margin-top: 10px; }
summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; color: var(--bruma); }
.foot { padding: 18px 16px 24px; text-align: center; color: var(--tinta-3); font-size: 13px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }