:root {
  --bg: #ecf2fb;
  --ink: #162339;
  --muted: #4f5f79;
  --brand: #003b6f;
  --brand2: #ffd400;
  --card: #ffffff;
  --line: #d3dced;
  --ok: #0f7b38;
  --warn: #965800;
  --bad: #8a1414;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(circle at 12% 12%, #ffffff 0, #edf3fd 40%, #e4ebf8 100%);
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}
.hero {
  background: linear-gradient(130deg, #003b6f, #005a99 58%, #0a7eb8);
  color: #fff;
  padding: 20px 16px;
}
.hero__inner { max-width: 1080px; margin: 0 auto; display: flex; gap: 14px; align-items: center; }
.hero__logo { width: 64px; height: 64px; object-fit: contain; border-radius: 12px; background: rgba(255,255,255,.15); padding: 8px; }
.hero__kicker { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; opacity: .9; }
.hero__title { margin: 4px 0; font-size: 1.5rem; }
.hero__sub { margin: 0; opacity: .95; max-width: 760px; }
.shell { max-width: 1080px; margin: -14px auto 24px; padding: 0 14px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  box-shadow: 0 8px 26px rgba(14, 33, 61, .08);
}
.card + .card { margin-top: 12px; }
.card__title { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field span { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 700; }
input, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  font: inherit;
  background: #fff;
}
input:focus, select:focus { outline: 2px solid rgba(0,123,255,.2); border-color: #5f95cf; }
.meta { color: var(--muted); font-size: .92rem; margin-top: 8px; }
.courses { display: grid; gap: 12px; margin-top: 12px; }
.course {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(16, 42, 76, .08);
}
.course__hero { width: 100%; height: 180px; object-fit: cover; display: block; background: #d7e3f7; }
.course__body { padding: 12px; }
.course__title { margin: 0 0 6px; font-size: 1.12rem; }
.course__meta { color: var(--muted); font-size: .92rem; margin-bottom: 8px; }
.course__desc { margin: 0 0 12px; color: #2a3f61; }
.course__footer { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.tag { padding: 4px 8px; border-radius: 999px; font-size: .82rem; font-weight: 700; background: #f0f5ff; border: 1px solid #c4d8ff; color: #1f4f9c; }
.btn {
  border: 1px solid #cad8ef;
  background: #fff;
  color: var(--ink);
  border-radius: 12px;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
}
.btn--primary { background: var(--brand2); border-color: #f5cf22; }
.btn[disabled] { opacity: .75; cursor: wait; }
.btn__spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(22,35,57,.25);
  border-top-color: #162339;
  border-radius: 50%;
  animation: pc-spin .8s linear infinite;
  margin-right: 8px;
  vertical-align: -2px;
}
@keyframes pc-spin { to { transform: rotate(360deg); } }
.form-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
.field--full { grid-column: 1 / -1; }
.selected-course { margin-bottom: 12px; color: #334766; }
.totals { border: 1px solid var(--line); border-radius: 12px; padding: 10px; background: #f6f9ff; display: grid; gap: 6px; }
.totals div { display: flex; justify-content: space-between; }
.totals__grand { font-size: 1.08rem; font-weight: 700; border-top: 1px dashed #c4d3ea; padding-top: 6px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.checkout { margin-top: 12px; border-top: 1px solid var(--line); padding-top: 12px; }
.checkout__title { font-weight: 700; margin-bottom: 6px; }
.card-fields { display: grid; gap: 8px; margin: 10px 0; }
.cf { min-height: 46px; border: 1px solid var(--line); border-radius: 10px; padding: 8px; background: #fff; }
.cf-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.status { margin-top: 10px; font-weight: 600; }
.status.ok { color: var(--ok); }
.status.warn { color: var(--warn); }
.status.bad { color: var(--bad); }
@media (min-width: 820px) {
  .courses { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}