/* Private access --------------------------------------------------------- */
.auth-page {
  display: flex;
  min-height: 100dvh;
  flex-direction: column;
}

.auth-page main {
  display: flex;
  width: 100%;
  flex: 1;
  align-items: center;
  padding: clamp(2rem, 6vw, 5rem) var(--space-4);
}

.auth-shell {
  display: grid;
  width: min(36rem, 100%);
  align-items: center;
  margin: 0 auto;
}

.auth-card {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 5vw, 3rem);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  background: var(--background-glass);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(var(--blur-glass));
  -webkit-backdrop-filter: blur(var(--blur-glass));
}

.auth-logo {
  position: relative;
  display: flex;
  width: min(9rem, 42%);
  justify-content: center;
  margin: 0 auto var(--space-5);
}

.auth-logo .theme-logo,
.auth-logo img {
  display: block;
  width: 100%;
  height: auto;
}

.auth-theme-toggle {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 1;
  background: var(--color-surface-solid);
}

.auth-card::before {
  position: absolute;
  top: -12rem;
  left: 50%;
  width: 28rem;
  height: 18rem;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, var(--color-brand-glow), transparent 68%);
  content: '';
  pointer-events: none;
  transform: translateX(-50%);
}

.auth-heading { position: relative; margin-bottom: var(--space-6); text-align: center; }
.auth-private-label {
  display: inline-flex;
  min-height: 2rem;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  color: var(--color-brand-text);
  background: var(--color-brand-soft);
  font-size: var(--font-size-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.auth-private-label::before { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--color-brand); content: ''; box-shadow: 0 0 0 0.25rem var(--color-brand-soft); }
.auth-heading h1 { margin: 0 0 var(--space-3); font-size: var(--text-card-title); letter-spacing: var(--tracking-heading); line-height: var(--leading-heading); }
.auth-heading > p:last-child { max-width: 30rem; margin: 0 auto; color: var(--color-text-muted); font-size: var(--text-secondary); line-height: var(--leading-body); text-wrap: balance; }

.auth-mock-entry { margin: 0 0 var(--space-5); padding: var(--space-4); border: 1px dashed var(--color-border-strong); border-radius: var(--radius-md); background: var(--color-brand-soft); text-align: center; }
.auth-mock-entry > span { display: block; margin-bottom: var(--space-1); color: var(--color-brand-text); font-size: var(--font-size-xs); font-weight: var(--weight-bold); letter-spacing: 0.05em; text-transform: uppercase; }
.auth-mock-entry p { margin: 0 0 var(--space-3); color: var(--color-text-muted); font-size: var(--font-size-xs); line-height: 1.55; }
.auth-mock-entry .btn-general { width: 100%; min-height: 3rem; }

.auth-providers { display: grid; gap: var(--space-3); }
.auth-provider {
  display: inline-flex;
  width: 100%;
  min-height: 3.25rem;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  color: var(--color-text);
  background: var(--color-surface-muted);
  box-shadow: var(--shadow-sm);
  font-weight: var(--weight-semibold);
  line-height: 1.25;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.auth-provider:hover { color: var(--color-text); border-color: var(--color-brand); background: var(--color-brand-soft); box-shadow: var(--shadow-md); transform: translateY(-0.125rem); }
.auth-provider:active { box-shadow: var(--shadow-sm); transform: translateY(0); }
.auth-provider:disabled { color: var(--color-text-muted); border-color: var(--color-border); background: var(--color-surface-muted); box-shadow: none; opacity: 0.68; cursor: not-allowed; transform: none; }
.auth-provider--google { color: #1f1f1f; border-color: #747775; background: #ffffff; box-shadow: var(--shadow-brand); }
.auth-provider--google:hover { color: #1f1f1f; border-color: var(--color-brand); background: #ffffff; }
.auth-provider__icon { width: 1.35rem; height: 1.35rem; flex: 0 0 1.35rem; object-fit: contain; }
[data-theme="dark"] .auth-provider__icon--monochrome { filter: invert(1); }

.auth-status {
  min-height: 1.75rem;
  margin: var(--space-3) 0 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-body);
  text-align: center;
}
.auth-status:not(:empty) { padding: var(--space-2) var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-muted); }
.auth-status[data-state="error"] { color: var(--color-text); border-color: var(--color-brand-text); background: var(--color-brand-soft); }
.auth-status[data-state="error"]::before { color: var(--color-brand-text); content: 'Atención: '; }

.auth-separator { display: flex; align-items: center; gap: var(--space-3); margin: var(--space-5) 0; color: var(--color-text-muted); font-size: var(--font-size-xs); font-weight: var(--weight-semibold); }
.auth-separator::before, .auth-separator::after { height: 1px; flex: 1; background: var(--color-border); content: ''; }

.auth-form { display: grid; gap: var(--space-4); }
.auth-field { display: grid; gap: var(--space-2); }
.auth-field label { color: var(--color-text); font-size: var(--text-small); font-weight: var(--weight-semibold); }
.auth-field input {
  width: 100%;
  min-height: 3rem;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  color: var(--color-text);
  background: var(--color-surface-solid);
  font: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.auth-field input:hover { border-color: var(--color-brand); }
.auth-field input:focus-visible { border-color: var(--color-focus); outline: 0.1875rem solid var(--color-brand-soft); outline-offset: 0.125rem; box-shadow: none; }
.auth-field input[aria-invalid="true"] { border-color: var(--color-brand-text); box-shadow: 0 0 0 0.1875rem var(--color-brand-soft); }
.auth-field__message { min-height: 1.5rem; margin: 0; color: var(--color-text); font-size: var(--font-size-xs); font-weight: var(--weight-semibold); line-height: 1.5; }
.auth-field__message:not(:empty)::before { margin-right: var(--space-1); color: var(--color-brand-text); content: 'Error:'; }

.auth-password-control { position: relative; }
.auth-password-control input { padding-right: 7rem; }
.auth-password-toggle {
  position: absolute;
  top: 50%;
  right: var(--space-1);
  display: inline-flex;
  min-width: 6rem;
  min-height: 2.5rem;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: var(--space-2);
  border: 0;
  border-radius: var(--radius-sm);
  color: var(--color-brand-text);
  background: transparent;
  font-size: var(--font-size-xs);
  font-weight: var(--weight-bold);
  cursor: pointer;
  transform: translateY(-50%);
}
.auth-password-toggle:hover { color: var(--color-brand-text-hover); background: var(--color-brand-soft); }
.auth-password-toggle svg { width: 1rem; height: 1rem; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.auth-form__meta { display: flex; justify-content: flex-end; margin-top: calc(var(--space-2) * -1); }
.auth-form__meta a { color: var(--color-brand-text); font-size: var(--font-size-xs); font-weight: var(--weight-semibold); }
.auth-submit { width: 100%; min-height: 3.25rem; }
.auth-submit:disabled { color: var(--color-text-muted); border-color: var(--color-border); background: var(--color-surface-muted); box-shadow: none; opacity: 0.72; cursor: not-allowed; transform: none; }

.auth-new-student { margin-top: var(--space-6); padding-top: var(--space-5); border-top: 1px solid var(--color-border); text-align: center; }
.auth-new-student p { margin: 0 0 var(--space-3); color: var(--color-text-muted); font-size: var(--text-small); }
.auth-new-student .btn-secundario { min-height: 2.75rem; }
.auth-demo-notice { margin: 0 0 var(--space-5); padding: var(--space-3) var(--space-4); border: 1px solid var(--color-border-strong); border-radius: var(--radius-md); color: var(--color-text); background: var(--color-brand-soft); font-size: var(--font-size-xs); line-height: var(--leading-body); }
.auth-back { display: flex; justify-content: center; margin-top: var(--space-5); font-size: var(--text-small); font-weight: var(--weight-semibold); }

.auth-footer {
  display: flex;
  width: min(72rem, calc(100% - 2rem));
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4) var(--space-6);
  margin: 0 auto;
  padding: var(--space-5) 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--text-small);
}

.auth-footer p { margin: 0; }
.auth-footer nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: var(--space-3) var(--space-5); }
.auth-footer a { color: var(--color-text-muted); font-weight: var(--weight-semibold); text-decoration: none; }
.auth-footer a:hover { color: var(--color-brand-text-hover); }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .auth-provider__icon--monochrome { filter: invert(1); }
}

@media (max-width: 30rem) {
  .auth-page main { align-items: flex-start; padding: var(--space-5) var(--space-3) var(--space-7); }
  .auth-card { padding: var(--space-5) var(--space-4); border-radius: var(--radius-lg); }
  .auth-logo { width: min(8rem, 40%); margin-bottom: var(--space-4); }
  .auth-theme-toggle { top: var(--space-3); right: var(--space-3); }
  .auth-heading { margin-bottom: var(--space-5); }
  .auth-provider { justify-content: flex-start; padding-inline: var(--space-4); }
  .auth-new-student .btn-secundario { width: 100%; }
  .auth-footer { align-items: flex-start; flex-direction: column; padding: var(--space-5) var(--space-1); }
  .auth-footer nav { justify-content: flex-start; gap: var(--space-3) var(--space-4); }
}

@media (prefers-reduced-motion: reduce) {
  .auth-provider { transition: none; }
}