/* ===== Дизайн-токены (из макета DM Studio) ===== */
:root {
  --primary: #4c3fd6;
  --primary-600: #4034c2;
  --primary-700: #362aa8;
  --primary-soft: #ecebfb;
  --bg: #f1f1f9;
  --card: #ffffff;
  --text: #1b1b2b;
  --muted: #6b6b80;
  --line: #e7e7f1;
  --line-strong: #d8d8e6;
  --danger: #e2445c;
  --radius-lg: 20px;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-card: 0 18px 40px -24px rgba(48, 40, 120, 0.35);
  --shadow-soft: 0 4px 14px -8px rgba(48, 40, 120, 0.25);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 500px at 80% -10%, #e9e7fb 0%, rgba(233, 231, 251, 0) 60%),
    var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: inherit; text-decoration: none; }

/* ===== Хедер ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 76px;
}
.logo {
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.02em;
}
.logo__accent { color: var(--primary); }
.nav {
  display: flex;
  gap: 34px;
  margin: 0 auto;
}
.nav__link {
  color: var(--muted);
  font-weight: 500;
  font-size: 15px;
  transition: color 0.18s ease;
}
.nav__link:hover { color: var(--text); }
.header__btn { white-space: nowrap; }

/* ===== Кнопки ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 12px 24px;
  cursor: pointer;
  transition: transform 0.06s ease, background 0.18s ease, box-shadow 0.18s ease, color 0.18s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-soft);
}
.btn--primary:hover { background: var(--primary-600); }
.btn--ghost {
  background: transparent;
  color: var(--primary);
  border-color: var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
}
.btn--ghost:hover { background: var(--primary-soft); border-color: var(--primary-soft); }
.btn--block { width: 100%; }
.btn--lg {
  padding: 16px 24px;
  font-size: 16px;
  border-radius: var(--radius);
}

/* ===== Карточки ===== */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

/* ===== Раздел оплаты ===== */
.payment { padding: 40px 0 72px; }

.breadcrumbs {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 22px;
}
.breadcrumbs a:hover { color: var(--primary); }
.breadcrumbs span { margin: 0 6px; }
.breadcrumbs__current { color: var(--text); margin: 0; }

.payment__head { margin-bottom: 28px; }
.payment__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}
.payment__subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  max-width: 560px;
}

.payment__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
  align-items: start;
}

/* ===== Форма оплаты ===== */
.pay-form { padding: 28px; }

.pay-form__methods {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
}
.method {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  cursor: pointer;
  transition: all 0.18s ease;
}
.method:hover { color: var(--text); }
.method--active {
  color: var(--primary);
  background: var(--primary-soft);
  border-color: #d9d6f7;
}

.form { display: flex; flex-direction: column; gap: 18px; }

.field { display: flex; flex-direction: column; gap: 7px; }
.field__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}
.field__control { position: relative; }

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.input {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  background: #fbfbfe;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}
.input::placeholder { color: #a3a3b5; }
.input:hover { border-color: #c6c6da; }
.input:focus {
  outline: none;
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(76, 63, 214, 0.14);
}
.input.is-invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(226, 68, 92, 0.12);
}

.card-brand {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.field__error {
  font-size: 12px;
  color: var(--danger);
  min-height: 0;
}

.form__note {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--muted);
}
.form__note svg { color: var(--primary); flex: none; }

/* ===== Сводка заказа ===== */
.order { padding: 28px; position: sticky; top: 100px; }
.order__title {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 18px;
}
.order__list {
  list-style: none;
  margin: 0 0 4px;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.order__item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.order__name { margin: 0; font-weight: 600; font-size: 15px; }
.order__meta { margin: 2px 0 0; font-size: 13px; color: var(--muted); }
.order__price { font-weight: 600; white-space: nowrap; }

.promo {
  display: flex;
  gap: 10px;
  margin: 18px 0;
}
.promo .input { flex: 1; }
.promo .btn { flex: none; }

.order__summary {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.order__row {
  display: flex;
  justify-content: space-between;
  font-size: 15px;
  color: var(--muted);
}
.order__row--total {
  color: var(--text);
  font-weight: 800;
  font-size: 20px;
  padding-top: 8px;
  border-top: 1px dashed var(--line-strong);
  margin-top: 4px;
}

.order__secure {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}
.order__secure svg { color: #2bb673; flex: none; }

/* ===== Адаптив ===== */
@media (max-width: 900px) {
  .payment__grid { grid-template-columns: 1fr; }
  .order { position: static; order: -1; }
  .nav { display: none; }
}
@media (max-width: 560px) {
  .header__btn { display: none; }
  .field-row { grid-template-columns: 1fr; }
  .pay-form, .order { padding: 22px; }
  .payment { padding: 28px 0 56px; }
}