#app { padding: 40px 0 80px; }

/* Acceso */
.auth {
  width: min(560px, 100%);
  margin: 6vh auto 0;
  padding: 64px 48px 40px;
  text-align: center;
  transition: background 0.6s var(--ease), border-color 0.6s var(--ease);
}
.auth h1 { font-size: clamp(30px, 4vw, 40px); }
.auth > p.muted { margin: 14px auto 0; max-width: 400px; font-size: 17px; }
.auth__form { display: grid; gap: 16px; margin-top: 32px; text-align: left; }
.auth__foot { margin-top: 28px; font-size: 15px; }
.textbtn { background: none; border: 0; padding: 0; color: var(--bone); font-weight: 600; cursor: pointer; }
.textbtn:hover { color: var(--gold); }
.auth .notice { margin-top: 20px; text-align: left; }

.otp { display: flex; justify-content: center; gap: 12px; margin-top: 40px; }
.otp input {
  width: 64px;
  height: 72px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(8, 8, 10, 0.86);
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(255, 255, 255, 0.06);
  text-align: center;
  font: 600 30px/1 var(--sans);
  caret-color: var(--bone);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s var(--ease);
}
.otp input:focus { outline: none; border: 2px solid var(--ember); box-shadow: 0 0 0 4px rgba(255, 90, 54, 0.18), 0 0 24px rgba(255, 90, 54, 0.35); }
.otp.is-error input { border-color: var(--ember); animation: temblar 0.4s; }
.otp.is-busy input { opacity: 0.6; }
@keyframes temblar {
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

/* Estado verificado: el cristal se tiñe de verde, como en la referencia */
.auth.is-verified {
  background: linear-gradient(180deg, rgba(56, 84, 62, 0.62), rgba(24, 34, 28, 0.7));
  border-color: rgba(70, 210, 122, 0.35);
}
.otp__done { display: grid; place-items: center; margin-top: 40px; }
.otp__done span {
  width: 76px;
  height: 76px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: rgba(8, 8, 10, 0.86);
  border: 2px solid var(--jade);
  box-shadow: 0 0 28px rgba(70, 210, 122, 0.45);
  color: var(--bone);
  animation: aparecer-check 0.5s var(--ease) both;
}
.otp__done svg { width: 34px; height: 34px; }
@keyframes aparecer-check { from { transform: scale(0.6); opacity: 0; } to { transform: none; opacity: 1; } }

/* Panel del alumno */
.dash { display: grid; gap: 16px; }
.dash__head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; padding: 32px 36px; }
.dash__head h1 { font-size: clamp(30px, 4vw, 44px); }
.dash__head p { margin-top: 6px; }

.progress { display: flex; gap: 8px; margin: 0; padding: 0; list-style: none; }
.progress li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(8, 8, 10, 0.5);
  color: var(--ash);
  font-size: 14px;
}
.progress li span { width: 10px; height: 10px; border-radius: 50%; border: 2px solid currentColor; }
.progress li.is-done { color: var(--bone); border-color: rgba(70, 210, 122, 0.4); }
.progress li.is-done span { background: var(--jade); border-color: var(--jade); }
.progress li.is-current { color: var(--bone); border-color: rgba(255, 212, 0, 0.5); }
.progress li.is-current span { border-color: var(--gold); }

.tabs { display: flex; gap: 4px; padding: 6px; border-radius: 999px; width: fit-content; }
.tabs button { padding: 10px 20px; border: 0; border-radius: 999px; background: none; color: var(--ash); font-weight: 600; cursor: pointer; }
.tabs button[aria-selected='true'] { background: rgba(255, 255, 255, 0.1); color: var(--bone); }

/* Manual */
.manual { display: grid; grid-template-columns: 260px 1fr; gap: 16px; align-items: start; }
.manual__nav { position: sticky; top: 100px; padding: 14px; display: grid; gap: 2px; border-radius: 22px; }
.manual__nav a { padding: 9px 12px; border-radius: 12px; color: var(--ash); text-decoration: none; font-size: 14px; line-height: 1.35; }
.manual__nav a:hover, .manual__nav a.is-active { color: var(--bone); background: rgba(255, 255, 255, 0.07); }
.manual__body { padding: 48px 56px; font-size: 17px; line-height: 1.7; color: #dcd9df; }
.manual__body h2 { font-size: 34px; margin: 64px 0 18px; color: var(--bone); scroll-margin-top: 100px; }
.manual__body h2:first-child { margin-top: 0; }
.manual__body h3 { font-size: 22px; margin: 36px 0 12px; color: var(--bone); }
.manual__body p, .manual__body ul, .manual__body ol { margin: 0 0 16px; max-width: 70ch; }
.manual__body strong { color: var(--bone); }
.manual__body blockquote { margin: 0 0 18px; padding: 16px 20px; border-left: 3px solid var(--gold); background: rgba(255, 212, 0, 0.06); border-radius: 0 12px 12px 0; }
.manual__body blockquote p { margin: 0; }
.manual__body a { color: var(--bone); text-underline-offset: 3px; }
.table-wrap { overflow-x: auto; margin: 0 0 20px; border: 1px solid var(--line); border-radius: 14px; }
.manual__body table { width: 100%; border-collapse: collapse; font-size: 15px; }
.manual__body th, .manual__body td { padding: 10px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.manual__body th { color: var(--bone); background: rgba(255, 255, 255, 0.04); font-weight: 600; }
.manual__body tr:last-child td { border-bottom: 0; }

/* Examen */
.exam { padding: 40px 48px; }
.exam__head { display: grid; gap: 6px; margin-bottom: 24px; }
.exam__head h2 { font-size: 34px; }
.questions { margin: 0 0 24px; padding: 0; list-style: none; display: grid; gap: 14px; counter-reset: q; }
.questions li { counter-increment: q; padding: 22px 24px; border-radius: 18px; background: rgba(8, 8, 10, 0.5); border: 1px solid var(--line); }
.questions legend { padding: 0; font-weight: 600; margin-bottom: 12px; }
.questions legend::before { content: counter(q) '. '; color: var(--gold); }
.questions fieldset { border: 0; margin: 0; padding: 0; }
.option { display: flex; gap: 12px; align-items: center; padding: 10px 14px; border-radius: 12px; cursor: pointer; border: 1px solid transparent; }
.option:hover { background: rgba(255, 255, 255, 0.05); }
.option input { accent-color: var(--gold); width: 18px; height: 18px; }
.option:has(input:checked) { border-color: rgba(255, 212, 0, 0.45); background: rgba(255, 212, 0, 0.06); }
.exam__result { margin-bottom: 24px; padding: 24px; border-radius: 18px; }
.exam__result.is-pass { background: rgba(70, 210, 122, 0.12); border: 1px solid rgba(70, 210, 122, 0.4); }
.exam__result.is-fail { background: rgba(255, 90, 54, 0.1); border: 1px solid rgba(255, 90, 54, 0.35); }
.exam__result strong { display: block; font-family: var(--display); font-size: 40px; line-height: 1.1; }

/* Diploma */
.diploma { padding: 40px 48px; display: grid; gap: 16px; max-width: 760px; }
.diploma h2 { font-size: 34px; }
.diploma .btn { width: fit-content; }
.diploma dl { display: grid; grid-template-columns: auto 1fr; gap: 8px 24px; margin: 8px 0; }
.diploma dt { color: var(--ash); }
.diploma dd { margin: 0; font-weight: 600; }

@media (max-width: 900px) {
  .manual { grid-template-columns: 1fr; }
  .manual__nav { position: static; grid-auto-flow: column; overflow-x: auto; grid-auto-columns: max-content; }
  .progress { flex-wrap: wrap; }
}

@media (max-width: 720px) {
  .auth { padding: 56px 20px 28px; margin-top: 2vh; }
  .otp { gap: 8px; }
  .otp input { width: 46px; height: 58px; font-size: 24px; border-radius: 12px; }
  .dash__head, .exam, .diploma { padding: 24px 20px; }
  .manual__body { padding: 28px 20px; font-size: 16px; }
  .manual__body h2 { font-size: 28px; }
  .tabs { width: 100%; overflow-x: auto; }
  .tabs button { white-space: nowrap; }
}