.auth-page {
  min-height: 100vh;
  background: var(--brand-arena);
}

.auth-main {
  padding: clamp(2.5rem, 7vw, 5rem) 1rem;
}

.auth-shell {
  width: min(1120px, calc(100vw - 2rem));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
}

.auth-copy {
  padding: clamp(1rem, 3vw, 2rem);
}

.auth-kicker {
  display: inline-block;
  margin-bottom: .9rem;
  font-family: var(--font-sans);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--brand-coral);
}

.auth-copy h1 {
  max-width: 12ch;
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  font-weight: 700;
  line-height: .96;
  color: var(--color-text);
}

.auth-copy p {
  max-width: 42rem;
  margin: 0;
  color: var(--color-text-soft);
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.75;
}

.auth-card {
  background: rgb(var(--brand-arena-rgb) / .86);
  border: 1px solid rgb(var(--brand-verde-mar-rgb) / .20);
  border-radius: 30px;
  box-shadow: var(--shadow-lg);
  padding: clamp(1.2rem, 3vw, 2rem);
}

.auth-card h2 {
  margin: 0 0 .4rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.6rem);
  font-weight: 700;
  color: var(--color-text);
}

.auth-card > p {
  margin: 0 0 1.35rem;
  color: var(--color-text-soft);
  line-height: 1.6;
}

.auth-form {
  display: grid;
  gap: 1rem;
}

.auth-form-row {
  display: grid;
  gap: .42rem;
}

.auth-label {
  font-family: var(--font-sans);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.auth-input {
  width: 100%;
  background: rgb(var(--brand-arena-rgb) / .86);
  color: var(--color-text);
  border: 1px solid rgb(var(--brand-verde-mar-rgb) / .20);
  border-radius: 18px;
  padding: .85rem 1rem;
  transition: border-color .18s ease, box-shadow .18s ease;
}

.auth-input:focus {
  border-color: var(--brand-verde-mar);
  box-shadow: 0 0 0 4px var(--focus-ring);
  outline: none;
}

.auth-check {
  display: inline-flex;
  gap: .55rem;
  align-items: center;
  color: var(--color-text-soft);
  font-size: .95rem;
}

.auth-actions {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  align-items: center;
  margin-top: .2rem;
}

.auth-submit {
  border: 0;
  cursor: pointer;
}

.auth-submit:disabled {
  opacity: .62;
  cursor: not-allowed;
}

.auth-link {
  color: var(--brand-verde-mar);
  text-decoration: none;
  font-weight: 700;
}

.auth-link:hover {
  color: var(--brand-coral);
  text-decoration: underline;
}

.auth-note {
  color: var(--color-text-soft);
  font-size: .95rem;
  line-height: 1.6;
}

.auth-alert {
  border-radius: 18px;
  padding: .85rem 1rem;
  line-height: 1.55;
  font-size: .95rem;
}

.auth-alert-error {
  background: rgb(var(--brand-coral-rgb) / .12);
  border: 1px solid rgb(var(--brand-coral-rgb) / .20);
  color: var(--brand-tinta);
}

.auth-alert-ok {
  background: rgb(var(--brand-menta-rgb) / .24);
  border: 1px solid rgb(var(--brand-verde-mar-rgb) / .20);
  color: var(--brand-mar-profundo);
}

.auth-hidden {
  display: none !important;
}

@media (max-width: 860px) {
  .auth-shell {
    grid-template-columns: 1fr;
  }

  .auth-copy h1 {
    max-width: 100%;
  }
}