/*
 * Public-facing authentication and hero page styles.
 *
 * Sections:
 * 1) page canvas and topbar, 2) hero copy, 3) auth card/form, 4) responsive.
 */

/* Public page background and base spacing. */
.public-page {
  padding-top: 1.5rem;
  background-image: 
    url('/static/img/axial_fondo_ia.jpeg');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center left;
}

/* Public topbar and entry actions. */
.public-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  padding: 0.875rem var(--space-xl);
  background: var(--surface-backdrop);
  border-bottom: 0.0625rem solid var(--border);
  /* Blur is progressive enhancement, not required for contrast or layout. */
  -webkit-backdrop-filter: blur(0.5rem);
  backdrop-filter: blur(0.5rem);
  box-shadow: var(--shadow-soft);
}

.brand-link {
  display: inline-flex;
  align-items: center;
}

.public-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Hero narrative block and typography. */
.hero-copy {
  display: grid;
  gap: 0.875rem;
}

.hero-copy-compact {
  max-width: 45rem;
  margin: 0 auto 1.5rem;
}

.hero-title {
  margin: 0;
  font-size: clamp(2.125rem, 4vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--brand-red);
}

.hero-text {
  margin: 0;
  max-width: 56ch;
  color: var(--brand-light);
  font-size: 1.125rem;
  line-height: 1.55;
}

/* Login/authentication card surface. */
.login-card {
  background: var(--surface-hero-card);
  border: 0.0625rem solid var(--border);
  border-radius: 1.5rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-hero-card);
}

.auth-card-copy {
  margin-bottom: 1.25rem;
}

.auth-form {
  display: grid;
  gap: 0.875rem;
}

/* Narrow viewport header stacking. */
@media (max-width: 56.25rem) {
  .public-topbar {
    flex-direction: column;
    align-items: stretch;
  }
}