/* Login / home — FAI flange industrial theme */
:root {
  --steel: #1a2332;
  --steel-deep: #0b1018;
  --fai-blue: #1e5aa8;
  --fai-blue-bright: #2f7ad1;
  --mist: rgba(232, 238, 245, 0.92);
  --mist-soft: rgba(232, 238, 245, 0.65);
  --line: rgba(255, 255, 255, 0.14);
  --accent: #4aa3ff;
  --danger: #ff6b6b;
  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
}

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

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

body.login-page {
  font-family: var(--font-body);
  color: var(--mist);
  background: var(--steel-deep);
  overflow-x: hidden;
}

/* Full-bleed cinematic stage */
.login-stage {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: clamp(1.25rem, 4vw, 3rem);
  isolation: isolate;
}

.login-bg {
  position: absolute;
  inset: -8%;
  z-index: -2;
  background:
    url("../image/hero-flange-bg.png") center / cover no-repeat;
  transform-origin: 65% 45%;
  animation: kenBurns 28s ease-in-out infinite alternate;
  will-change: transform;
}

.login-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(8, 12, 20, 0.88) 0%, rgba(12, 22, 38, 0.55) 42%, rgba(10, 16, 28, 0.72) 100%),
    radial-gradient(ellipse at 70% 40%, rgba(30, 90, 168, 0.22), transparent 55%);
  pointer-events: none;
}

/* Soft scanning light sweep */
.login-scan {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.login-scan::before {
  content: "";
  position: absolute;
  top: -20%;
  left: -30%;
  width: 40%;
  height: 140%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(74, 163, 255, 0.07),
    transparent
  );
  transform: skewX(-18deg);
  animation: scanSweep 12s ease-in-out infinite;
}

@keyframes kenBurns {
  from {
    transform: scale(1) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.12) translate3d(-2.5%, 1.5%, 0);
  }
}

@keyframes scanSweep {
  0%,
  15% {
    transform: translateX(0) skewX(-18deg);
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  55%,
  100% {
    transform: translateX(320%) skewX(-18deg);
    opacity: 0;
  }
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes brandPulse {
  0%,
  100% {
    filter: drop-shadow(0 0 0 rgba(47, 122, 209, 0));
  }
  50% {
    filter: drop-shadow(0 0 18px rgba(47, 122, 209, 0.35));
  }
}

.login-composition {
  width: min(440px, 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.35rem;
  text-align: center;
  animation: riseIn 0.9s ease-out both;
}

.login-brand {
  margin: 0;
  animation: brandPulse 6s ease-in-out infinite;
}

.login-brand img {
  display: block;
  width: min(280px, 78vw);
  height: auto;
}

.login-tagline {
  margin: 0;
  max-width: 28ch;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mist-soft);
  line-height: 1.35;
}

.login-form {
  width: 100%;
  margin-top: 0.35rem;
  padding: 1.35rem 1.25rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(10, 16, 26, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  text-align: left;
  animation: riseIn 1.05s ease-out 0.12s both;
}

.login-form label {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist-soft);
}

.login-form .field {
  margin-bottom: 1rem;
}

.login-form input[type="text"],
.login-form input[type="password"] {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 2px;
  background: rgba(6, 10, 16, 0.65);
  color: #f2f6fb;
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.login-form input:focus {
  border-color: var(--fai-blue-bright);
  box-shadow: 0 0 0 3px rgba(47, 122, 209, 0.25);
}

.login-form button,
.login-form input[type="submit"] {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.85rem 1rem;
  border: 0;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--fai-blue-bright), var(--fai-blue));
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.2s ease;
}

.login-form button:hover,
.login-form input[type="submit"]:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.login-form button:active,
.login-form input[type="submit"]:active {
  transform: translateY(0);
}

.login-error {
  margin: 0 0 1rem;
  padding: 0.65rem 0.75rem;
  border-left: 3px solid var(--danger);
  background: rgba(255, 80, 80, 0.12);
  color: #ffc9c9;
  font-size: 0.92rem;
}

.login-dev {
  margin-top: auto;
  padding-top: 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
  animation: riseIn 1.2s ease-out 0.22s both;
}

.login-dev span {
  font-family: var(--font-display);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(232, 238, 245, 0.45);
}

.login-dev a {
  display: inline-block;
  line-height: 0;
  opacity: 0.9;
  transition: opacity 0.2s ease;
}

.login-dev a:hover {
  opacity: 1;
}

.login-dev img {
  display: block;
  height: 36px;
  width: auto;
  max-width: 210px;
}

@media (min-width: 900px) {
  .login-stage {
    align-items: flex-start;
    padding-left: clamp(3rem, 10vw, 8rem);
  }

  .login-composition {
    align-items: flex-start;
    text-align: left;
  }

  .login-dev {
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .login-bg,
  .login-scan::before,
  .login-brand,
  .login-composition,
  .login-form,
  .login-dev {
    animation: none !important;
  }

  .login-bg {
    transform: none;
  }
}