/* ==========================================================================
   SEGETHANMI · Login (plantilla)
   Paleta tomada del logo: azul marino → azul → cian, con gris corporativo.
   ========================================================================== */

:root {
  --navy-900: #0d1b33;
  --navy-800: #14294c;
  --navy-700: #1b3560;
  --blue-600: #1668b3;
  --blue-500: #1e7cc9;
  --cyan-400: #2ba0e0;
  --cyan-300: #52b7ea;

  --gray-600: #5d6a72;
  --gray-500: #8b959c;
  --gray-300: #c9d1d6;
  --gray-100: #eef2f5;
  --white: #ffffff;

  --danger: #d13b3b;
  --danger-bg: #fdf1f1;
  --danger-border: #f2c4c4;

  --radius: 16px;
  --radius-sm: 11px;
  --shadow-card: 0 32px 70px -24px rgba(13, 27, 51, .35);
  --shadow-btn: 0 12px 24px -10px rgba(22, 104, 179, .75);
  --ease: cubic-bezier(.4, 0, .2, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html,
body { height: 100%; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  color: var(--navy-800);
  background: var(--gray-100);
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ───────────────────────────────────────────────────────────── */

.shell {
  min-height: 100%;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
}

/* ── Panel de marca ───────────────────────────────────────────────────── */

.brand {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(2.5rem, 5vw, 4.5rem);
  color: var(--white);
  background:
    radial-gradient(120% 90% at 12% 8%, rgba(43, 160, 224, .38) 0%, transparent 55%),
    linear-gradient(155deg, var(--navy-700) 0%, var(--navy-800) 42%, var(--navy-900) 100%);
}

/* Cintas diagonales que evocan la "S" del logotipo */
.brand__ribbons {
  position: absolute;
  inset: -18% -25% -18% 8%;
  pointer-events: none;
  opacity: .5;
  background:
    linear-gradient(115deg, transparent 34%, rgba(43, 160, 224, .55) 34%, rgba(43, 160, 224, .55) 38%, transparent 38%),
    linear-gradient(115deg, transparent 48%, rgba(22, 104, 179, .5) 48%, rgba(22, 104, 179, .5) 54%, transparent 54%),
    linear-gradient(65deg, transparent 62%, rgba(82, 183, 234, .3) 62%, rgba(82, 183, 234, .3) 66%, transparent 66%),
    linear-gradient(65deg, transparent 74%, rgba(255, 255, 255, .12) 74%, rgba(255, 255, 255, .12) 77%, transparent 77%);
  filter: blur(.3px);
}

.brand__content { position: relative; max-width: 26rem; }

.brand__eyebrow {
  display: inline-block;
  margin-bottom: 1.35rem;
  padding: .4rem .85rem;
  font-size: .69rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan-300);
  border: 1px solid rgba(82, 183, 234, .4);
  border-radius: 999px;
  background: rgba(43, 160, 224, .1);
}

.brand__title {
  margin: 0 0 1.1rem;
  font-size: clamp(1.9rem, 3.3vw, 2.85rem);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -.01em;
}

.brand__title strong {
  font-weight: 700;
  letter-spacing: .01em;
  background: linear-gradient(95deg, var(--cyan-300), var(--white));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand__text {
  margin: 0 0 2rem;
  font-size: 1rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, .72);
}

.brand__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .8rem;
  font-size: .93rem;
  color: rgba(255, 255, 255, .85);
}

.brand__list li {
  display: flex;
  align-items: center;
  gap: .7rem;
}

.brand__list li::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  transform: rotate(45deg);
  background: linear-gradient(135deg, var(--cyan-400), var(--blue-600));
  box-shadow: 0 0 0 4px rgba(43, 160, 224, .16);
}

.brand__footer {
  position: relative;
  margin: 3rem 0 0;
  font-size: .76rem;
  letter-spacing: .02em;
  color: rgba(255, 255, 255, .45);
}

/* ── Panel del formulario ─────────────────────────────────────────────── */

.panel {
  display: grid;
  place-items: center;
  padding: clamp(1.75rem, 4vw, 3.5rem);
  background:
    radial-gradient(90% 60% at 100% 0%, rgba(43, 160, 224, .1) 0%, transparent 60%),
    var(--gray-100);
}

.card {
  width: 100%;
  max-width: 25.5rem;
  padding: clamp(1.9rem, 3.4vw, 2.75rem);
  background: var(--white);
  border: 1px solid rgba(13, 27, 51, .06);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.card.is-shaking { animation: shake .45s var(--ease); }

@keyframes shake {
  10%, 90% { transform: translateX(-3px); }
  30%, 70% { transform: translateX(5px); }
  50%      { transform: translateX(-5px); }
}

.card__logo {
  display: block;
  width: 152px;
  height: auto;
  margin: 0 auto 1.35rem;
}

.card__head { margin-bottom: 1.6rem; text-align: center; }

.card__head h2 {
  margin: 0 0 .4rem;
  font-size: 1.42rem;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--navy-800);
}

.card__head p {
  margin: 0;
  font-size: .89rem;
  color: var(--gray-500);
}

/* ── Alerta de error ─────────────────────────────────────────────────── */

.alert {
  display: flex;
  align-items: flex-start;
  gap: .65rem;
  margin-bottom: 1.25rem;
  padding: .8rem .9rem;
  font-size: .84rem;
  line-height: 1.45;
  color: #8f2525;
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-left: 3px solid var(--danger);
  border-radius: var(--radius-sm);
  animation: alert-in .28s var(--ease);
}

.alert[hidden] { display: none; }

.alert svg {
  flex: none;
  width: 17px;
  height: 17px;
  margin-top: .1rem;
  fill: none;
  stroke: var(--danger);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@keyframes alert-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: none; }
}

/* ── Campos ──────────────────────────────────────────────────────────── */

.field { margin-bottom: 1.05rem; }

.field label {
  display: block;
  margin-bottom: .45rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .015em;
  color: var(--gray-600);
}

.control { position: relative; }

.control__icon {
  position: absolute;
  top: 50%;
  left: .95rem;
  width: 18px;
  height: 18px;
  transform: translateY(-50%);
  fill: none;
  stroke: var(--gray-500);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke .2s var(--ease);
  pointer-events: none;
}

.control input {
  width: 100%;
  height: 3rem;
  padding: 0 2.9rem 0 2.85rem;
  font: inherit;
  font-size: .94rem;
  color: var(--navy-800);
  background: #fbfcfd;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
}

.control input::placeholder { color: #aab4bb; }

.control input:hover { border-color: #aeb9c0; }

.control input:focus {
  background: var(--white);
  border-color: var(--blue-500);
  box-shadow: 0 0 0 4px rgba(30, 124, 201, .13);
}

/* El icono precede al input en el DOM, por eso se resuelve con :has() */
.control:has(input:focus) .control__icon { stroke: var(--blue-500); }

.field.has-error .control input {
  border-color: var(--danger);
  background: var(--danger-bg);
}

.field.has-error .control input:focus {
  box-shadow: 0 0 0 4px rgba(209, 59, 59, .13);
}

.field.has-error .control__icon { stroke: var(--danger); }

/* Ojo mostrar/ocultar */
.toggle {
  position: absolute;
  top: 50%;
  right: .5rem;
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  padding: 0;
  transform: translateY(-50%);
  background: none;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  transition: background .18s var(--ease);
}

.toggle:hover { background: var(--gray-100); }

.toggle:focus-visible {
  outline: 2px solid var(--blue-500);
  outline-offset: 1px;
}

.toggle svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: var(--gray-500);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.toggle[aria-pressed="true"] svg { stroke: var(--blue-600); }

/* ── Fila recordarme / enlace ────────────────────────────────────────── */

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 1.15rem 0 1.5rem;
  font-size: .84rem;
}

.check {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: var(--gray-600);
  cursor: pointer;
  user-select: none;
}

.check input {
  width: 1.05rem;
  height: 1.05rem;
  margin: 0;
  accent-color: var(--blue-600);
  cursor: pointer;
}

.link {
  color: var(--blue-600);
  font-weight: 600;
  text-decoration: none;
  transition: color .18s var(--ease);
}

.link:hover { color: var(--cyan-400); text-decoration: underline; }

/* ── Botón ───────────────────────────────────────────────────────────── */

.btn {
  position: relative;
  width: 100%;
  height: 3.1rem;
  display: grid;
  place-items: center;
  font: inherit;
  font-size: .96rem;
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--white);
  background: linear-gradient(100deg, var(--navy-800) 0%, var(--blue-600) 55%, var(--cyan-400) 100%);
  background-size: 160% 100%;
  background-position: 0% 50%;
  border: 0;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-btn);
  cursor: pointer;
  overflow: hidden;
  transition: background-position .45s var(--ease), transform .15s var(--ease), box-shadow .2s var(--ease);
}

.btn:hover { background-position: 100% 50%; }

.btn:active { transform: translateY(1px); box-shadow: 0 6px 14px -8px rgba(22, 104, 179, .8); }

.btn:focus-visible { outline: 2px solid var(--navy-800); outline-offset: 3px; }

.btn__label { grid-area: 1 / 1; }

.btn__spinner {
  grid-area: 1 / 1;
  width: 1.15rem;
  height: 1.15rem;
  border: 2px solid rgba(255, 255, 255, .35);
  border-top-color: var(--white);
  border-radius: 50%;
  opacity: 0;
}

.btn.is-loading { cursor: progress; background-position: 100% 50%; }
.btn.is-loading .btn__label { opacity: 0; }
.btn.is-loading .btn__spinner { opacity: 1; animation: spin .7s linear infinite; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Nota de plantilla ───────────────────────────────────────────────── */

.note {
  margin: 1.4rem 0 0;
  font-size: .74rem;
  text-align: center;
  letter-spacing: .02em;
  color: var(--gray-500);
}

/* ── Responsive ──────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }

  .brand {
    padding: 2.5rem 1.75rem 2.25rem;
    text-align: center;
  }

  .brand__content { max-width: none; }
  .brand__list { display: none; }
  .brand__text { margin-bottom: 0; }
  .brand__footer { display: none; }
}

@media (max-width: 420px) {
  .card { padding: 1.6rem 1.25rem; border-radius: 14px; }
  .row { flex-direction: column; align-items: flex-start; gap: .7rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}