:root {
  /* Palette */
  --light-bg: #F1EFEC;
  --mid-tone: #D4C9BE;
  --dark-blue: #123458;
  --dark-text: #030303;

  /* Extended tokens */
  --surface: #ffffff;
  --border: var(--mid-tone);
  --primary: var(--dark-blue);
  --text: var(--dark-text);

  /* Radii & shadow */
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 6px 18px rgba(18, 52, 88, 0.08);
  --shadow-md: 0 10px 30px rgba(18, 52, 88, 0.12);

  /* Spacing scale */
  --space-1: 6px;
  --space-2: 10px;
  --space-3: 14px;
  --space-4: 18px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 40px;
}

* { box-sizing: border-box; }

body {
  background: radial-gradient(1800px 800px at 50% 0%, #ffffff 0%, var(--light-bg) 70%) no-repeat,
              var(--light-bg);
  font-family: 'Poppins', sans-serif;
  color: var(--text);
  min-height: 100dvh;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-y: auto;
}

.page-wrapper {
  width: 100%;
  min-height: 100dvh;
  position: relative;
  display: grid;
  align-items: center;
  justify-items: center;
  padding: var(--space-6) var(--space-5);
}

.illustrative-background {
  position: absolute;
  inset: auto 0 0 0;
  height: 42%;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to top, rgba(18,52,88,0.10), rgba(18,52,88,0)),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1000 200'><rect x='0' y='120' width='1000' height='200' fill='%23D4C9BE'/><path d='M0 120 Q 250 70, 500 120 T 1000 120 L 1000 200 L 0 200 Z' fill='%23123458'/><path d='M0 95 Q 200 45, 400 95 T 800 95 L 800 170 L 0 170 Z' fill='%23030303' opacity='0.08'/></svg>");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: bottom center;
}

/* Back Button */
.back-button-container {
  position: absolute;
  top: var(--space-5);
  left: var(--space-5);
  z-index: 2;
}
.back-button {
  color: var(--primary);
  font-size: 2.25rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: transform .2s ease, color .2s ease;
}
.back-button:hover { color: #0c2642; transform: translateY(-1px); }

/* Card */
.login-container {
  position: relative;
  z-index: 1;
  width: min(440px, 92vw);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: var(--space-7) var(--space-6) var(--space-6);
  animation: fadeInSlideUp .6s ease-out both;
  opacity: 0;
}

@keyframes fadeInSlideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.logo-container {
  display: grid;
  place-items: center;
  margin-bottom: var(--space-5);
}
.login-logo {
  max-width: 160px;
  height: auto;
}

.login-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: 700;
  letter-spacing: .5px;
  color: var(--text);
  text-transform: uppercase;
  margin: 0 0 var(--space-6);
}

/* Form controls */
.form-label {
  color: var(--text);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.input-group-flex { margin-bottom: var(--space-5) !important; }

.input-field-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-field-wrapper .input-icon {
  position: absolute;
  left: 14px;
  color: var(--primary);
  font-size: 1.1rem;
  z-index: 2;
  pointer-events: none;
  transform: translateY(1px);
}

.form-control {
  width: 100%;
  background-color: var(--light-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 12px 48px 12px 44px; /* space for icons and toggle */
  transition: border-color .15s ease, box-shadow .15s ease, background-color .15s ease;
  box-shadow: none;
}
.form-control:hover { border-color: color-mix(in srgb, var(--primary) 30%, var(--border)); }
.form-control:focus {
  border-color: var(--primary);
  background-color: #fff;
  outline: 0;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);
}
.form-control::placeholder { color: rgba(3,3,3,.55); }

/* Toggle password button */
.toggle-password {
  position: absolute;
  right: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--primary);
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease, transform .15s ease;
}
.toggle-password:hover { background: rgba(18,52,88,.06); }
.toggle-password:active { transform: scale(.98); }

/* Remember + Forgot row */
.form-row-slim { gap: var(--space-2); }
.form-check-input {
  background-color: #fff;
  border: 1px solid var(--primary);
  border-radius: 4px;
  background-image: none;
  width: 1.05rem; height: 1.05rem;
  margin-top: .2rem;
}
.form-check-input:checked {
  background-color: var(--primary);
  border-color: var(--primary);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23F1EFEC' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10l3 3l6-6'/%3e%3c/svg%3e");
  background-size: 100% 100%;
}
.form-check-label { color: var(--text); }

.link-text {
  color: var(--text);
  text-decoration: none;
  transition: color .15s ease, text-decoration-color .15s ease;
}
.link-text:hover { color: var(--primary); text-decoration: underline; }

/* Primary button */
.btn-illustrative-2d {
  --btn-bg: var(--primary);
  --btn-text: var(--light-bg);
  border: none;
  color: var(--btn-text);
  background: var(--btn-bg);
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: .6px;
  font-size: 1.05rem;
  box-shadow: var(--shadow-sm);
  transition: transform .12s ease, box-shadow .15s ease, background-color .2s ease;
}
.btn-illustrative-2d:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-illustrative-2d:active { transform: translateY(0); box-shadow: var(--shadow-sm); background-color: #0a1e33; }

/* Alerts aligned to palette */
.alert-danger {
  --bs-alert-color: #7a1c1c;
  --bs-alert-bg: #ffe6e6;
  --bs-alert-border-color: #ffc7c7;
  border-radius: 10px;
  padding: 12px 14px;
  border: 1px solid var(--bs-alert-border-color);
}

/* Responsive tweaks */
@media (max-width: 768px) {
  .illustrative-background { height: 30%; }
  .page-wrapper { padding: var(--space-6) var(--space-4); }
  .login-container { padding: var(--space-6) var(--space-5); width: min(480px, 94vw); }
  .back-button-container { top: var(--space-4); left: var(--space-4); }
  .back-button { font-size: 2rem; }
}

@media (max-width: 420px) {
  .login-container { padding: var(--space-6) var(--space-4); }
  .form-control { padding-left: 42px; padding-right: 44px; }
  .toggle-password { right: 8px; }
}