:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #fff;
  background: #020712;
  --muted: #9ca8ba;
  --line: rgba(255,255,255,.11);
  --blue: #168cff;
  --indigo: #4f46e5;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; margin: 0; }
body {
  background:
    radial-gradient(circle at 78% 10%, rgba(37,99,235,.38), transparent 35%),
    radial-gradient(circle at 12% 88%, rgba(14,165,233,.14), transparent 32%),
    linear-gradient(135deg, #02050b, #0b1d4c);
}
button, input { font: inherit; }

.login-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 28px;
}
.login-card {
  display: grid;
  width: min(100%, 470px);
  gap: 17px;
  padding: 40px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(3,9,20,.88);
  box-shadow: 0 30px 100px rgba(0,0,0,.45);
  backdrop-filter: blur(18px);
}
.login-card > img {
  width: 350px;
  max-width: 100%;
  margin: 0 auto 9px;
}
.eyebrow {
  color: #8fbfff;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .17em;
}
h1 {
  margin: 0;
  font-size: clamp(34px, 7vw, 50px);
  letter-spacing: -.045em;
}
.login-card > p {
  margin: -7px 0 3px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}
label {
  display: grid;
  gap: 8px;
  color: #d1d8e3;
  font-size: 13px;
  font-weight: 750;
}
input {
  min-height: 50px;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none;
  background: rgba(255,255,255,.05);
  color: #fff;
}
input:focus {
  border-color: rgba(79,124,255,.9);
  box-shadow: 0 0 0 3px rgba(37,99,235,.18);
}
button {
  min-height: 51px;
  margin-top: 3px;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--blue), var(--indigo));
  color: #fff;
  font-size: 13px;
  font-weight: 850;
  letter-spacing: .1em;
  cursor: pointer;
}
button:disabled { opacity: .55; cursor: wait; }
.form-message { min-height: 19px; color: #ffafb6; font-size: 13px; }
.login-card .notice {
  margin: -4px 0 0;
  color: #637087;
  font-size: 12px;
  text-align: center;
}

@media (max-width: 540px) {
  .login-shell { padding: 14px; }
  .login-card { padding: 28px 22px; }
}

/* Identidad AIDA: paleta suministrada */
:root {
  color-scheme: light;
  color: #3d433b;
  background: #faf7f2;
  --muted: #73786f;
  --line: rgba(82, 88, 78, .18);
  --blue: #52584e;
  --indigo: #8f6670;
}
body {
  background:
    radial-gradient(circle at 78% 10%, rgba(247, 221, 222, .92), transparent 35%),
    radial-gradient(circle at 12% 88%, rgba(216, 193, 187, .58), transparent 34%),
    #faf7f2;
  color: #3d433b;
}
.login-card {
  border-color: rgba(82, 88, 78, .18);
  background: rgba(250, 247, 242, .9);
  box-shadow: 0 30px 90px rgba(82, 88, 78, .18);
}
.login-card > img {
  width: 330px;
  max-height: 175px;
  object-fit: contain;
}
.eyebrow { color: #9f737e; }
.login-card > p { color: var(--muted); }
label { color: #52584e; }
input {
  border-color: rgba(82, 88, 78, .2);
  background: rgba(255, 255, 255, .72);
  color: #3d433b;
}
input:focus {
  border-color: #c58b99;
  box-shadow: 0 0 0 3px rgba(216, 193, 187, .3);
}
button {
  background: linear-gradient(90deg, #52584e, #6c7368);
  color: #fff;
}
.form-message { color: #963f49; }
.login-card .notice { color: #7d8379; }