/* Fase 7.2 — acceso corporativo SaaS.
 * El producto y el tenant se reconocen sin convertir el login en una plantilla genérica.
 */

.login-page {
  --auth-rule: color-mix(in srgb, var(--tenant-primary) 72%, var(--color-border));
  --auth-panel-ink: var(--tenant-on-secondary);
  min-height: 100vh;
  background: var(--color-canvas);
}

.login-page::before {
  position: fixed;
  inset: 0 auto 0 0;
  width: clamp(14px, 2vw, 28px);
  background: var(--tenant-primary);
  content: "";
  pointer-events: none;
}

.auth-layout {
  width: min(1120px, calc(100% - 72px));
  min-height: 680px;
  margin: clamp(28px, 6vh, 64px) auto;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: var(--color-surface);
  box-shadow: 0 22px 56px rgba(18, 35, 63, .12);
}

.auth-brand-panel {
  position: relative;
  justify-content: space-between;
  padding: clamp(42px, 5vw, 68px);
  overflow: hidden;
  color: var(--auth-panel-ink);
  background: var(--tenant-secondary);
}

.auth-brand-panel::before {
  position: absolute;
  inset: auto -1px -1px auto;
  width: min(70%, 360px);
  height: 44%;
  border: 0;
  border-radius: 0;
  background: var(--tenant-primary);
  box-shadow: none;
  clip-path: polygon(36% 0, 100% 0, 100% 100%, 0 100%);
  content: "";
}

.auth-brand-panel::after {
  position: absolute;
  inset: 0 auto 0 clamp(24px, 4vw, 52px);
  width: 1px;
  height: auto;
  border-radius: 0;
  background: color-mix(in srgb, var(--tenant-on-secondary) 16%, transparent);
  opacity: 1;
  content: "";
}

.tenant-brand,
.product-signature {
  position: relative;
  z-index: 1;
}

.tenant-logo-shell {
  width: min(100%, 260px);
  min-height: 108px;
  justify-content: flex-start;
  padding: 18px 20px;
  border: 1px solid color-mix(in srgb, var(--tenant-on-secondary) 24%, transparent);
  border-radius: var(--radius-edge);
  background: var(--color-surface);
  box-shadow: 10px 10px 0 color-mix(in srgb, var(--tenant-primary) 84%, transparent);
}

.tenant-logo-fallback {
  min-width: 68px;
  min-height: 68px;
  border-radius: var(--radius-edge);
}

.tenant-kicker {
  margin-top: 56px;
  color: color-mix(in srgb, var(--tenant-primary) 78%, var(--tenant-on-secondary));
}

.tenant-brand h2 {
  max-width: 15ch;
  margin-top: 14px;
  font-size: clamp(var(--type-3xl), 4vw, var(--type-4xl));
  font-weight: 650;
  line-height: 1.02;
}

.tenant-purpose {
  max-width: 36ch;
  margin-top: 20px;
  color: color-mix(in srgb, var(--tenant-on-secondary) 72%, transparent);
  font-size: var(--type-md);
  line-height: 1.65;
}

.product-signature {
  display: grid;
  gap: 5px;
  align-self: flex-start;
  max-width: 250px;
  margin-top: 72px;
  padding-top: 16px;
  border-top: 1px solid color-mix(in srgb, var(--tenant-on-secondary) 22%, transparent);
}

.product-signature strong {
  color: var(--tenant-on-secondary);
  font-size: var(--type-sm);
  letter-spacing: .16em;
}

.product-signature small {
  color: color-mix(in srgb, var(--tenant-on-secondary) 64%, transparent);
  font-size: var(--type-xs);
  line-height: 1.45;
}

.auth-card {
  justify-content: center;
  padding: clamp(46px, 7vw, 84px);
  border-left: 1px solid var(--color-border);
  background: var(--color-surface);
}

.auth-heading {
  max-width: 560px;
  margin-bottom: 34px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--color-border);
}

.auth-eyebrow {
  color: var(--tenant-primary);
}

.auth-heading h1 {
  margin-top: 10px;
  font-size: clamp(var(--type-3xl), 4vw, var(--type-4xl));
  font-weight: 650;
  letter-spacing: -.025em;
}

.login-form {
  gap: 22px;
}

.field-group {
  gap: 7px;
}

.field-group label {
  color: var(--color-text);
  font-size: var(--type-xs);
  letter-spacing: .02em;
}

.field-group input {
  min-height: 50px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-compact);
  background: var(--color-surface);
  transition: border-color var(--duration-fast) var(--ease-standard), box-shadow var(--duration-fast) var(--ease-standard);
}

.field-group input:hover {
  border-color: color-mix(in srgb, var(--tenant-primary) 44%, var(--color-border));
}

.password-toggle {
  right: 7px;
  min-height: 34px;
  border-radius: var(--radius-edge);
  color: var(--color-link);
  background: transparent;
}

.password-toggle:hover {
  background: var(--tenant-primary-subtle);
}

.mfa-disclosure {
  border: 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
  background: transparent;
}

.mfa-disclosure summary {
  padding-inline: 2px;
}

.mfa-field {
  padding: 2px 0 16px;
}

.login-alert {
  border-radius: var(--radius-edge);
}

.login-submit {
  min-height: 54px;
  justify-content: space-between;
  border: 0;
  border-radius: var(--radius-compact);
  padding-inline: 20px;
  box-shadow: none;
  transition: background-color var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
}

.login-submit::after {
  content: "→";
  font-size: var(--type-xl);
  line-height: 1;
}

.login-submit:hover:not(:disabled) {
  transform: none;
  box-shadow: none;
  filter: none;
  background: var(--tenant-primary-hover);
}

.auth-footer {
  margin-top: 32px;
}

@media (max-width: 860px) {
  .login-page::before {
    width: 12px;
  }

  .auth-layout {
    width: min(720px, calc(100% - 40px));
    min-height: auto;
    grid-template-columns: 1fr;
    margin-block: 20px;
  }

  .auth-brand-panel {
    min-height: 260px;
    padding: 30px 34px;
  }

  .auth-brand-panel::before {
    width: 44%;
    height: 58%;
  }

  .tenant-brand {
    grid-template-columns: minmax(120px, 190px) 1fr;
    column-gap: 28px;
  }

  .tenant-logo-shell {
    grid-row: 1 / span 3;
    min-height: 92px;
  }

  .tenant-kicker {
    margin-top: 0;
  }

  .tenant-brand h2 {
    font-size: clamp(var(--type-2xl), 6vw, var(--type-3xl));
  }

  .product-signature {
    margin-top: 32px;
  }

  .auth-card {
    padding: 48px 36px;
    border-top: 1px solid var(--color-border);
    border-left: 0;
  }
}

@media (max-width: 560px) {
  .auth-layout {
    width: 100%;
    margin: 0;
    box-shadow: none;
  }

  .auth-brand-panel {
    min-height: 218px;
    padding: 24px 22px 28px 30px;
  }

  .auth-brand-panel::after {
    left: 20px;
  }

  .tenant-brand {
    grid-template-columns: 82px 1fr;
    column-gap: 16px;
  }

  .tenant-logo-shell {
    min-height: 72px;
    padding: 8px;
    box-shadow: 6px 6px 0 color-mix(in srgb, var(--tenant-primary) 84%, transparent);
  }

  .tenant-brand h2 {
    font-size: var(--type-2xl);
  }

  .tenant-purpose,
  .product-signature small {
    display: none;
  }

  .product-signature {
    margin-top: 24px;
    padding-top: 12px;
  }

  .auth-card {
    padding: 38px 22px 30px 30px;
  }

  .auth-heading h1 {
    font-size: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .login-submit,
  .field-group input,
  .password-toggle {
    transition: none;
  }
}