:root {
  --nav-a: #0a1f33;
  --nav-b: #153e5e;
  --bg-top: #edf4f9;
  --bg-mid: #f6f9fc;
  --bg-bot: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f8fbfd;
  --line: #dbe5ee;
  --text: #13263a;
  --muted: #5f7387;
  --brand: #156f8f;
  --brand-hover: #0f5f7a;
  --success: #107c41;
  --danger: #b42318;
  --radius: 16px;
}

html,
body {
  min-height: 100%;
}

body {
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1000px 420px at 15% -10%, #d9eaf7 0%, transparent 65%),
    radial-gradient(800px 360px at 95% 0%, #e8f2f8 0%, transparent 70%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 50%, var(--bg-bot) 100%);
}

.app-navbar {
  background: linear-gradient(120deg, var(--nav-a), var(--nav-b)) !important;
}

.navbar {
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.navbar-brand {
  letter-spacing: 0.2px;
}

main.container {
  max-width: 1180px;
}

.card-soft {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fff 0%, var(--surface-soft) 100%);
  box-shadow: 0 10px 22px rgba(12, 32, 56, 0.08);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.card-soft:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(12, 32, 56, 0.11);
}

.card-soft .card-body {
  padding: 1.1rem 1.1rem 1rem;
}

h1,
h2,
h3,
h4,
h5 {
  color: #102338;
}

.text-muted {
  color: var(--muted) !important;
}

a {
  color: #0f6387;
  text-underline-offset: 2px;
}

a:hover {
  color: #0a536f;
}

.btn {
  border-radius: 10px;
  font-weight: 600;
}

.btn-primary {
  background-color: var(--brand);
  border-color: var(--brand);
  box-shadow: 0 8px 16px rgba(21, 111, 143, 0.23);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--brand-hover);
  border-color: var(--brand-hover);
}

.btn-outline-primary {
  border-color: #87adc0;
  color: #0f6387;
}

.btn-outline-primary:hover {
  background: #0f6387;
  border-color: #0f6387;
}

.btn-outline-danger {
  border-color: #e5a7a2;
  color: var(--danger);
}

.btn-outline-danger:hover {
  background: var(--danger);
  border-color: var(--danger);
}

.input-group-text,
.form-control {
  border-color: #cfdae6;
}

.input-group-text {
  background: #f3f7fb;
  color: #40586c;
}

.form-control {
  border-radius: 10px;
}

.form-control:focus {
  border-color: #76a4bd;
  box-shadow: 0 0 0 0.2rem rgba(21, 111, 143, 0.15);
}

.modal-content {
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: 0 24px 40px rgba(10, 31, 51, 0.2);
}

.modal-header,
.modal-footer {
  border-color: #e6edf4;
}

.modal-title {
  font-weight: 800;
}

.alert {
  border: 0;
  border-left: 4px solid transparent;
  border-radius: 12px;
}

.alert-success {
  border-left-color: var(--success);
  background: #e9f7ef;
  color: #14532d;
}

.alert-danger {
  border-left-color: var(--danger);
  background: #fdeceb;
  color: #6f1d1b;
}

.collapse img {
  background: #fff;
  padding: 8px;
  border-radius: 12px !important;
}

@media (max-width: 991px) {
  main.container {
    padding-left: 0.9rem;
    padding-right: 0.9rem;
  }

  .card-soft .card-body {
    padding: 1rem;
  }
}