/* Login SUTIMPI — fondo luminoso + tarjeta flotante */
:root {
  --login-bg-deep: #061018;
  --login-bg-mid: #0a2a32;
  --login-accent: #2dd4bf;
  --login-accent-soft: rgba(45, 212, 191, 0.35);
  --login-glow: rgba(56, 189, 248, 0.28);
  --login-card: rgba(12, 28, 36, 0.48);
  --login-card-border: rgba(255, 255, 255, 0.14);
  --login-text: #e8f4f2;
  --login-muted: rgba(232, 244, 242, 0.72);
}

html,
body.login-page {
  height: 100%;
  margin: 0;
  padding: 0;
}

body.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--login-text);
  background: var(--login-bg-deep);
  overflow-x: hidden;
  font-family: "Segoe UI", system-ui, sans-serif;
  position: relative;
}

/* Escenario de fondo */
.login-stage {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 20% 20%, rgba(14, 116, 144, 0.45), transparent 55%),
    radial-gradient(ellipse 70% 50% at 85% 75%, rgba(15, 118, 110, 0.4), transparent 50%),
    linear-gradient(165deg, #041016 0%, #0a2430 45%, #061820 100%);
}

.login-stage__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  pointer-events: none;
  animation: login-glow-drift 14s ease-in-out infinite alternate;
}

.login-stage__glow--a {
  width: 42vw;
  height: 42vw;
  max-width: 520px;
  max-height: 520px;
  top: -8%;
  left: -6%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.55), transparent 70%);
}

.login-stage__glow--b {
  width: 48vw;
  height: 48vw;
  max-width: 580px;
  max-height: 580px;
  bottom: -12%;
  right: -8%;
  background: radial-gradient(circle, rgba(45, 212, 191, 0.5), transparent 70%);
  animation-delay: -4s;
  animation-duration: 18s;
}

.login-stage__glow--c {
  width: 30vw;
  height: 30vw;
  max-width: 360px;
  max-height: 360px;
  top: 40%;
  left: 45%;
  background: radial-gradient(circle, rgba(125, 211, 252, 0.35), transparent 70%);
  animation-delay: -8s;
  animation-duration: 16s;
}

/* Líneas de luz en movimiento */
.login-stage__lines {
  position: absolute;
  inset: -20%;
  pointer-events: none;
  transform: rotate(-18deg);
}

.login-stage__line {
  position: absolute;
  left: -10%;
  width: 120%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.04) 20%,
    rgba(45, 212, 191, 0.45) 50%,
    rgba(125, 211, 252, 0.35) 60%,
    transparent 100%
  );
  box-shadow: 0 0 12px rgba(45, 212, 191, 0.25);
  opacity: 0.55;
  animation: login-line-sweep 11s linear infinite;
}

.login-stage__line:nth-child(1) { top: 18%; animation-duration: 13s; opacity: 0.35; }
.login-stage__line:nth-child(2) { top: 32%; animation-duration: 16s; animation-delay: -3s; opacity: 0.5; }
.login-stage__line:nth-child(3) { top: 48%; animation-duration: 12s; animation-delay: -6s; height: 2px; opacity: 0.65; }
.login-stage__line:nth-child(4) { top: 62%; animation-duration: 15s; animation-delay: -2s; opacity: 0.4; }
.login-stage__line:nth-child(5) { top: 76%; animation-duration: 18s; animation-delay: -9s; opacity: 0.3; }

.login-stage__beam {
  position: absolute;
  top: -30%;
  width: 2px;
  height: 160%;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(255, 255, 255, 0.08) 30%,
    rgba(45, 212, 191, 0.35) 50%,
    rgba(255, 255, 255, 0.06) 70%,
    transparent
  );
  filter: blur(1px);
  opacity: 0.4;
  animation: login-beam-drift 20s ease-in-out infinite alternate;
}

.login-stage__beam--1 { left: 22%; animation-duration: 22s; }
.login-stage__beam--2 { left: 55%; animation-duration: 26s; animation-delay: -5s; opacity: 0.28; }
.login-stage__beam--3 { left: 78%; animation-duration: 19s; animation-delay: -11s; opacity: 0.35; }

.login-stage__vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 35%, rgba(0, 0, 0, 0.55) 100%);
  pointer-events: none;
}

/* Tarjeta flotante con transparencia */
.login-shell {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 420px;
  padding: 1.25rem;
}

.lockscreen-wrapper.login-card {
  background: var(--login-card);
  backdrop-filter: blur(18px) saturate(1.25);
  -webkit-backdrop-filter: blur(18px) saturate(1.25);
  border: 1px solid var(--login-card-border);
  border-radius: 22px;
  padding: 2rem 1.5rem 1.5rem;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  box-shadow:
    0 0 0 1px rgba(45, 212, 191, 0.08),
    0 20px 50px rgba(0, 0, 0, 0.45),
    0 0 80px rgba(45, 212, 191, 0.08);
  animation: login-float 7.5s ease-in-out infinite;
  will-change: transform;
}

.login-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.12) 0%,
    transparent 40%,
    transparent 60%,
    rgba(45, 212, 191, 0.08) 100%
  );
  pointer-events: none;
}

.login-card {
  position: relative;
  overflow: hidden;
}

.lockscreen-logo b {
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  color: #fff;
}

.lockscreen-logo small {
  color: var(--login-muted);
}

.login-card .img-fluid.rounded-circle {
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.12), 0 8px 28px rgba(0, 0, 0, 0.35);
}

.login-card .input-group-text {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
  color: var(--login-accent);
}

.login-card .form-control {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
  color: #fff;
}

.login-card .form-control::placeholder {
  color: rgba(255, 255, 255, 0.45);
}

.login-card .form-control:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(45, 212, 191, 0.55);
  box-shadow: 0 0 0 0.2rem rgba(45, 212, 191, 0.2);
  color: #fff;
}

.login-card .btn-outline-secondary {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
  color: var(--login-muted);
}

.login-card .btn-outline-secondary:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
}

.login-card .form-check-label {
  color: var(--login-muted);
}

.login-card .btn-primary {
  background: linear-gradient(135deg, #0f766e 0%, #0e7490 100%);
  border: none;
  box-shadow: 0 8px 24px rgba(14, 116, 144, 0.35);
  font-weight: 600;
}

.login-card .btn-primary:hover {
  background: linear-gradient(135deg, #0d9488 0%, #0284c7 100%);
}

.login-card .lockscreen-footer,
.login-card .lockscreen-footer p,
.login-card .lockscreen-footer a {
  color: var(--login-muted) !important;
  font-size: 0.85rem;
}

.login-card .lockscreen-footer a.link-primary,
.login-card .lockscreen-footer a.text-primary {
  color: var(--login-accent) !important;
}

.login-card .alert {
  backdrop-filter: blur(6px);
}

@keyframes login-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes login-glow-drift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(4%, 6%) scale(1.08); }
}

@keyframes login-line-sweep {
  0% { transform: translateX(-18%); opacity: 0.15; }
  40% { opacity: 0.55; }
  100% { transform: translateX(18%); opacity: 0.2; }
}

@keyframes login-beam-drift {
  0% { transform: translateX(0) rotate(8deg); }
  100% { transform: translateX(30px) rotate(8deg); }
}

@media (prefers-reduced-motion: reduce) {
  .lockscreen-wrapper.login-card,
  .login-stage__glow,
  .login-stage__line,
  .login-stage__beam {
    animation: none !important;
  }
}

@media (max-width: 480px) {
  .lockscreen-wrapper.login-card {
    padding: 1.5rem 1.1rem 1.25rem;
    border-radius: 18px;
  }
}