/* ==========================================================================
   Pantalla de login
   ========================================================================== */

.auth-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--bg-app);
}

.auth-visual {
  position: relative;
  background: var(--gradient-brand);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--sp-10);
  color: #fff;
  overflow: hidden;
}
.auth-visual::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(255,255,255,.18), transparent 40%),
              radial-gradient(circle at 80% 80%, rgba(255,255,255,.12), transparent 45%);
}
.auth-visual .brand { display: flex; align-items: center; gap: var(--sp-3); position: relative; z-index: 1; }
.auth-visual .brand .logo-mark {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,.18); backdrop-filter: blur(6px);
  display: grid; place-items: center; font-weight: 700;
}
.auth-visual h1 { font-size: 2rem; line-height: 1.25; max-width: 420px; position: relative; z-index: 1; }
.auth-visual p { opacity: .85; max-width: 380px; margin-top: var(--sp-3); position: relative; z-index: 1; }
.auth-visual .footnote { font-size: var(--fs-xs); opacity: .7; position: relative; z-index: 1; }

.auth-form-wrap {
  display: flex; align-items: center; justify-content: center;
  padding: var(--sp-6);
}
.auth-form {
  width: 100%; max-width: 380px;
}
.auth-form h2 { font-size: var(--fs-xl); margin-bottom: var(--sp-2); }
.auth-form .subtitle { color: var(--text-muted); font-size: var(--fs-sm); margin-bottom: var(--sp-6); }
.auth-form .btn { width: 100%; margin-top: var(--sp-2); }
.auth-alert {
  background: var(--danger-bg); color: var(--danger);
  border-radius: var(--radius-md); padding: var(--sp-3) var(--sp-4);
  font-size: var(--fs-sm); margin-bottom: var(--sp-4);
}
.auth-theme-toggle { position: absolute; top: var(--sp-5); right: var(--sp-5); }

@media (max-width: 900px) {
  .auth-shell { grid-template-columns: 1fr; }
  .auth-visual { display: none; }
}