:root {
  --ink: #14212b;
  --muted: #5f6d78;
  --line: #d5dde4;
  --panel: rgba(255, 255, 255, 0.82);
  --accent: #0f766e;
  --accent-hover: #0b5f59;
  --danger: #b42318;
  --warn-bg: #fef3f2;
  --page-a: #e7eef4;
  --page-b: #f7f5ef;
  --page-c: #dce8e4;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  text-align: left !important;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--page-a);
}

.login-shell {
  position: relative;
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
  overflow: hidden;
}

.login-aurora {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(40% 45% at 18% 22%, rgba(15, 118, 110, 0.22), transparent 70%),
    radial-gradient(45% 40% at 82% 18%, rgba(37, 99, 135, 0.18), transparent 68%),
    radial-gradient(50% 50% at 60% 88%, rgba(180, 140, 80, 0.12), transparent 70%),
    linear-gradient(145deg, var(--page-a), var(--page-b) 48%, var(--page-c));
  animation: drift 18s ease-in-out infinite alternate;
}

.login-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(20, 33, 43, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 33, 43, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 78%);
  pointer-events: none;
}

.login-card {
  position: relative;
  z-index: 1;
  width: min(100%, 400px);
  padding: 2.25rem 2rem 1.5rem;
  border: 1px solid rgba(20, 33, 43, 0.08);
  border-radius: 18px;
  background: var(--panel);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 24px 60px rgba(20, 33, 43, 0.08);
  animation: rise 0.55s ease-out both;
}

.login-brand {
  margin-bottom: 1.75rem;
}

.login-mark {
  margin: 0;
  font-family: Fraunces, Georgia, serif;
  font-size: clamp(1.85rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--ink);
}

.login-tagline {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 400;
}

.login-form {
  display: grid;
  gap: 1rem;
}

.login-field {
  display: grid;
  gap: 0.4rem;
  margin: 0;
  text-align: left;
}

.login-field span {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.login-field input {
  width: 100%;
  height: 48px;
  padding: 0 0.9rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font-size: 0.98rem;
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.login-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

.login-submit {
  margin-top: 0.35rem;
  height: 48px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.18s ease;
}

.login-submit:hover {
  background: var(--accent-hover);
}

.login-submit:active {
  transform: translateY(1px);
}

.login-alert {
  margin-bottom: 1rem;
  padding: 0.7rem 0.85rem;
  border-radius: 10px;
  font-size: 0.9rem;
  text-align: left;
  animation: rise 0.35s ease-out both;
}

.login-alert-danger,
.login-alert-error {
  background: var(--warn-bg);
  color: var(--danger);
  border: 1px solid #fecdca;
}

.login-alert-info,
.login-alert-primary,
.login-alert-success {
  background: #ecfdf5;
  color: #067647;
  border: 1px solid #a6f4c5;
}

.login-copy {
  margin: 1.5rem 0 0;
  text-align: center;
  color: #8a96a1;
  font-size: 0.8rem;
}

@keyframes drift {
  from { transform: translate3d(-1.5%, -1%, 0) scale(1.02); }
  to { transform: translate3d(1.5%, 1.5%, 0) scale(1.06); }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 480px) {
  .login-card {
    padding: 1.75rem 1.25rem 1.25rem;
    border-radius: 14px;
  }
}