/* PAGE-SCOPED STYLES: login.html
   Goal: match landing-page premium feel (dark-first, smooth motion, shimmer CTA)
*/

:root {
  --login-bg-dim: 0.22;
  --login-card-bg: rgba(12, 16, 24, 0.58);
  --login-card-border: rgba(255, 255, 255, 0.10);
  --login-text: rgba(245, 247, 255, 0.92);
  --login-text-muted: rgba(245, 247, 255, 0.70);
  --login-shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
  --login-radius: 18px;
}

/* Background image (keep the original hangar image, but treated to suit dark UI) */
body.login-page {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--login-text);
}

/* Image layer */
body.login-page::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/Aircraft_in_hangar_plain.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: var(--login-bg-dim);
  filter: saturate(0.95) contrast(1.05);
  transform: scale(1.02);
  z-index: 0;
}

/* Soft vignette / gradient overlay for premium depth and legibility */
body.login-page::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1200px 700px at 20% 10%, rgba(120, 170, 255, 0.10), transparent 60%),
    radial-gradient(900px 600px at 90% 30%, rgba(140, 120, 255, 0.08), transparent 60%),
    linear-gradient(180deg, rgba(6, 8, 12, 0.70), rgba(6, 8, 12, 0.82));
  z-index: 1;
}

.login-shell {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px 18px;
}

.login-card {
  width: min(460px, 100%);
  border-radius: var(--login-radius);
  background: var(--login-card-bg);
  border: 1px solid var(--login-card-border);
  box-shadow: var(--login-shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 26px 22px;
  transform: translateY(10px);
  opacity: 0;
  animation: loginIn 520ms cubic-bezier(0.2, 0.9, 0.2, 1) forwards;
}

@keyframes loginIn {
  to { transform: translateY(0); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .login-card { animation: none; opacity: 1; transform: none; }
}

/* Header */
.login-header {
  margin-bottom: 16px;
}

.login-brand {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.login-wordmark {
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--login-text);
  font-size: 20px;
  line-height: 1;
}

.login-subtitle {
  margin: 8px 0 0 0;
  color: var(--login-text-muted);
  font-size: 13px;
}

/* Form */
.login-form .field {
  margin-top: 12px;
}

.login-form label {
  display: block;
  font-size: 12px;
  color: var(--login-text-muted);
  margin-bottom: 6px;
}

.login-form input {
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(6, 8, 12, 0.44);
  color: var(--login-text);
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease, transform 180ms ease;
}

.login-form input::placeholder {
  color: rgba(245, 247, 255, 0.45);
}

.login-form input:focus {
  border-color: rgba(160, 200, 255, 0.35);
  box-shadow: 0 0 0 4px rgba(160, 200, 255, 0.12);
  background: rgba(6, 8, 12, 0.52);
}

.login-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  margin-top: 16px;
}

/* Buttons
   We assume /css/styles.css already defines .btn basics.
   We add shimmer + premium hover behaviour here without breaking other pages.
*/
.btn.btn-shimmer {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(135deg, rgba(120, 170, 255, 0.20), rgba(140, 120, 255, 0.18));
  color: var(--login-text);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.28);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, filter 160ms ease;
  min-width: 140px;
}

.btn.btn-shimmer:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.34);
  border-color: rgba(255, 255, 255, 0.20);
  filter: brightness(1.05);
}

.btn.btn-shimmer:active {
  transform: translateY(0px);
}

/* Shimmer sweep */
.btn.btn-shimmer::before {
  content: "";
  position: absolute;
  inset: -40% -60%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.24), transparent);
  transform: translateX(-60%) rotate(12deg);
  animation: shimmer 2.4s ease-in-out infinite;
  pointer-events: none;
}

@keyframes shimmer {
  0%   { transform: translateX(-70%) rotate(12deg); opacity: 0.0; }
  18%  { opacity: 0.9; }
  45%  { transform: translateX(65%) rotate(12deg); opacity: 0.0; }
  100% { transform: translateX(65%) rotate(12deg); opacity: 0.0; }
}

.btn-shimmer__label {
  position: relative;
  z-index: 1;
  font-weight: 750;
  letter-spacing: 0.02em;
}

.btn.btn-ghost {
  border-radius: 14px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--login-text);
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn.btn-ghost:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}

.login-footnote {
  margin: 14px 0 0 0;
  color: rgba(245, 247, 255, 0.58);
  font-size: 12px;
  line-height: 1.4;
}