/* =========================================================
   Бриф на разработку сайта (template-page/page-brief.php)
   ========================================================= */

.bf-page {
  --bf-primary: #750093;
  --bf-primary-soft: #f5ebf8;
  --bf-dark: #05003e;
  --bf-text: #3d3a5c;
  --bf-muted: #807a95;
  --bf-border: #ddd7e6;
  --bf-bg: #f7f5fa;
  --bf-error: #d3264b;
  --bf-radius: 20px;
  --bf-sticky-top: 120px;

  background: var(--bf-bg);
  color: var(--bf-text);
  font-family: var(--ff-main);
  padding-bottom: 100px;
}

.bf-page [hidden] {
  display: none !important;
}

.bf-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  width: 100%;
}

/* ---------- Шапка брифа ---------- */

.bf-hero {
  padding: 70px 0 50px;
}

.bf-hero__title {
  margin: 0 0 16px;
  font-size: 44px;
  line-height: 1.15;
  font-weight: 900;
  color: var(--bf-dark);
}

.bf-hero__text {
  max-width: 720px;
  margin: 0 0 28px;
  font-size: 18px;
  line-height: 1.5;
}

.bf-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.bf-hero__facts li {
  padding: 10px 18px;
  background: #fff;
  border-radius: 30px;
  font-size: 14px;
  box-shadow: 0 2px 10px rgba(5, 0, 62, 0.06);
}

.bf-hero__facts b {
  color: var(--bf-primary);
}

/* ---------- Раскладка: навигация + форма ---------- */

.bf-layout {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.bf-aside {
  position: sticky;
  top: var(--bf-sticky-top);
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 24px;
  background: #fff;
  border-radius: var(--bf-radius);
  box-shadow: 0 4px 24px rgba(5, 0, 62, 0.06);
}

.bf-progress__head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 14px;
}

.bf-progress__value {
  color: var(--bf-primary);
}

.bf-progress__bar {
  height: 6px;
  background: var(--bf-primary-soft);
  border-radius: 3px;
  overflow: hidden;
}

.bf-progress__bar span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--bf-primary);
  border-radius: 3px;
  transition: width 0.3s;
}

.bf-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.bf-nav__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 10px;
  border-radius: 12px;
  font-size: 15px;
  line-height: 1.3;
  color: var(--bf-text);
  transition: background 0.2s, color 0.2s;
}

.bf-nav__link:hover,
.bf-nav__link:visited {
  color: var(--bf-text);
}

.bf-nav__link:hover {
  background: var(--bf-bg);
}

.bf-nav__link.is-active {
  background: var(--bf-primary-soft);
  color: var(--bf-primary);
  font-weight: 700;
}

.bf-nav__num {
  flex: 0 0 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  border: 1.5px solid var(--bf-border);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  background: #fff;
}

.bf-nav__link.is-active .bf-nav__num {
  border-color: var(--bf-primary);
  color: var(--bf-primary);
}

.bf-nav__link.is-done .bf-nav__num {
  border-color: var(--bf-primary);
  background: var(--bf-primary);
  color: transparent;
  position: relative;
}

.bf-nav__link.is-done .bf-nav__num::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 5px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: translateY(-1px) rotate(-45deg);
}

.bf-aside__contacts {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 18px;
  border-top: 1px solid var(--bf-border);
  font-size: 14px;
}

.bf-aside__contacts span {
  color: var(--bf-muted);
}

.bf-aside__contacts a,
.bf-aside__contacts a:visited {
  color: var(--bf-dark);
  font-weight: 700;
}

.bf-aside__contacts a:hover {
  color: var(--bf-primary);
}

/* ---------- Разделы ---------- */

.bf-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.bf-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.bf-section {
  padding: 40px;
  background: #fff;
  border-radius: var(--bf-radius);
  box-shadow: 0 4px 24px rgba(5, 0, 62, 0.06);
  scroll-margin-top: var(--bf-sticky-top);
}

.bf-section__head {
  display: flex;
  gap: 18px;
  margin-bottom: 32px;
}

.bf-section__num {
  flex: 0 0 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  border-radius: 14px;
  background: var(--bf-primary);
  color: #fff;
  font-size: 20px;
  font-weight: 900;
}

.bf-section__title {
  margin: 0 0 6px;
  font-size: 26px;
  line-height: 1.2;
  font-weight: 900;
  color: var(--bf-dark);
}

.bf-section__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.45;
  color: var(--bf-muted);
}

/* ---------- Поля ---------- */

.bf-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 20px;
}

.bf-field {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.bf-field--full {
  grid-column: 1 / -1;
}

.bf-label {
  display: block;
  margin-bottom: 10px;
  font-size: 16px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--bf-dark);
}

.bf-label i {
  font-style: normal;
  color: var(--bf-primary);
}

.bf-input {
  width: 100%;
  min-height: 52px;
  padding: 14px 16px;
  font: inherit;
  font-size: 16px;
  line-height: 1.4;
  color: var(--bf-dark);
  background: #fff;
  border: 1.5px solid var(--bf-border);
  border-radius: 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

.bf-input::placeholder {
  color: #aaa4b8;
}

.bf-input:hover {
  border-color: #c3b8d2;
}

.bf-input:focus {
  border-color: var(--bf-primary);
  box-shadow: 0 0 0 4px rgba(117, 0, 147, 0.12);
}

.bf-textarea {
  resize: vertical;
  min-height: 96px;
}

.bf-other {
  margin-top: 12px;
}

.bf-hint {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.45;
  color: var(--bf-muted);
}

.bf-hint--top {
  margin: -4px 0 12px;
}

.bf-field.has-error .bf-input {
  border-color: var(--bf-error);
}

.bf-error {
  margin-top: 6px;
  font-size: 13px;
  color: var(--bf-error);
}

/* ---------- Чипсы ---------- */

.bf-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.bf-chip {
  position: relative;
  cursor: pointer;
}

.bf-chip input,
.bf-card input,
.bf-agree input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.bf-chip span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  font-size: 15px;
  line-height: 1.2;
  color: var(--bf-text);
  background: #fff;
  border: 1.5px solid var(--bf-border);
  border-radius: 30px;
  user-select: none;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.bf-chip:hover span {
  border-color: var(--bf-primary);
}

.bf-chip input:checked + span {
  background: var(--bf-primary);
  border-color: var(--bf-primary);
  color: #fff;
}

.bf-chip input[type="checkbox"]:checked + span::before {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: translateY(-2px) rotate(-45deg);
}

.bf-chip input:focus-visible + span,
.bf-card input:focus-visible + .bf-card__body,
.bf-agree input:focus-visible + span::before {
  box-shadow: 0 0 0 4px rgba(117, 0, 147, 0.2);
}

/* ---------- Карточки выбора (тип сайта) ---------- */

.bf-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.bf-card {
  position: relative;
  display: flex;
  cursor: pointer;
}

.bf-card__body {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  padding: 18px 44px 18px 18px;
  border: 1.5px solid var(--bf-border);
  border-radius: 16px;
  background: #fff;
  transition: border-color 0.2s, background 0.2s;
}

.bf-card__body::after {
  content: "";
  position: absolute;
  top: 18px;
  right: 16px;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--bf-border);
  border-radius: 50%;
  background: #fff;
  transition: border 0.2s;
}

.bf-card__body b {
  font-size: 16px;
  color: var(--bf-dark);
}

.bf-card__body span {
  font-size: 13px;
  line-height: 1.4;
  color: var(--bf-muted);
}

.bf-card:hover .bf-card__body {
  border-color: var(--bf-primary);
}

.bf-card input:checked + .bf-card__body {
  border-color: var(--bf-primary);
  background: var(--bf-primary-soft);
}

.bf-card input:checked + .bf-card__body::after {
  border: 6px solid var(--bf-primary);
}

/* ---------- Списки ссылок ---------- */

.bf-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bf-links__row {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) minmax(0, 1.3fr);
  gap: 10px;
  align-items: center;
}

.bf-links__num {
  font-size: 15px;
  font-weight: 900;
  color: var(--bf-primary);
}

/* ---------- Отправка ---------- */

.bf-submit {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 32px 40px;
  background: #fff;
  border-radius: var(--bf-radius);
  box-shadow: 0 4px 24px rgba(5, 0, 62, 0.06);
}

.bf-agree {
  position: relative;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.4;
}

.bf-agree > span {
  position: relative;
  padding-left: 34px;
}

.bf-agree > span::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--bf-border);
  border-radius: 6px;
  background: #fff;
  transition: background 0.2s, border-color 0.2s;
}

.bf-agree > span::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 4px;
  width: 9px;
  height: 5px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg);
  opacity: 0;
}

.bf-agree input:checked + span::before {
  background: var(--bf-primary);
  border-color: var(--bf-primary);
}

.bf-agree input:checked + span::after {
  opacity: 1;
}

.bf-agree.has-error > span::before {
  border-color: var(--bf-error);
}

.bf-agree a,
.bf-agree a:visited {
  color: var(--bf-primary);
  text-decoration: underline;
}

.bf-submit__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
}

.bf-btn {
  padding: 18px 48px;
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 8px 30px rgba(117, 0, 147, 0.3);
}

.bf-btn:disabled {
  opacity: 0.6;
  cursor: wait;
}

.bf-status {
  font-size: 14px;
  color: var(--bf-muted);
}

.bf-status.is-error {
  color: var(--bf-error);
}

/* ---------- Успешная отправка ---------- */

.bf-success__box {
  max-width: 640px;
  margin: 0 auto;
  padding: 60px 40px;
  text-align: center;
  background: #fff;
  border-radius: var(--bf-radius);
  box-shadow: 0 4px 24px rgba(5, 0, 62, 0.06);
}

.bf-success__box h2 {
  margin: 0 0 14px;
  font-size: 30px;
  font-weight: 900;
  color: var(--bf-dark);
}

.bf-success__box p {
  margin: 0 0 30px;
  font-size: 16px;
  line-height: 1.5;
}

.bf-success__box .btn {
  display: inline-block;
}

/* ---------- Адаптив ---------- */

@media only screen and (max-width: 1024px) {
  .bf-page {
    --bf-sticky-top: 100px;
  }

  .bf-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .bf-aside {
    z-index: 5;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 16px;
  }

  .bf-nav {
    flex-direction: row;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
    margin: 0 -16px;
    padding: 0 16px;
  }

  .bf-nav::-webkit-scrollbar {
    display: none;
  }

  .bf-nav__link {
    flex: 0 0 auto;
    padding: 6px 12px 6px 6px;
    font-size: 14px;
    white-space: nowrap;
    background: var(--bf-bg);
  }

  .bf-nav__num {
    flex-basis: 24px;
    height: 24px;
    font-size: 12px;
  }

  .bf-aside__contacts {
    display: none;
  }

  .bf-section {
    scroll-margin-top: calc(var(--bf-sticky-top) + 110px);
  }

  .bf-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media only screen and (max-width: 768px) {
  .bf-hero {
    padding: 40px 0 30px;
  }

  .bf-hero__title {
    font-size: 32px;
  }

  .bf-hero__text {
    font-size: 16px;
  }

  .bf-section,
  .bf-submit {
    padding: 28px 20px;
  }

  .bf-section__head {
    gap: 14px;
    margin-bottom: 24px;
  }

  .bf-section__num {
    flex-basis: 40px;
    height: 40px;
    border-radius: 12px;
    font-size: 17px;
  }

  .bf-section__title {
    font-size: 22px;
  }

  .bf-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .bf-links__row {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 8px;
  }

  .bf-links__row .bf-input:last-child {
    grid-column: 2;
  }

  .bf-links__row + .bf-links__row {
    padding-top: 10px;
    border-top: 1px dashed var(--bf-border);
  }
}

@media only screen and (max-width: 640px) {
  .bf-page {
    --bf-sticky-top: 80px;
    padding-bottom: 60px;
  }

  .bf-hero__title {
    font-size: 28px;
  }

  .bf-cards {
    grid-template-columns: minmax(0, 1fr);
  }

  .bf-chip span {
    padding: 10px 14px;
    font-size: 14px;
  }

  .bf-btn {
    width: 100%;
  }
}