/* ============================================================
   WoTraFa — Global stylesheet
   Per spec:
   - bg #000000, fg #ffffff
   - Space Grotesk via @font-face in colors_and_type.css (self-hosted in fonts/)
   - cards: border 2px solid #545454
   - sections: padding 80px 0
   - navigation: fixed top, transparent
   - mobile responsive
   ============================================================ */

@import url('../colors_and_type.css');

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: var(--fg); text-decoration: none; }
a:hover { color: var(--accent); }

/* ---------- Layout ---------- */
.section {
  padding: var(--section-y) 0;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

/* ---------- Navigation (fixed, transparent) ---------- */
.wt-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--gutter);
  background: var(--bg-nav);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.wt-nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: var(--weight-bold);
  letter-spacing: 0.01em;
  font-size: 1rem;
}
.wt-nav__brand img { width: 36px; height: 36px; }

/* Анимация раскрытия названия при наведении */
.wt-brand-text {
  position: relative;
  display: inline-block;
  white-space: nowrap;
}

.wt-brand-short {
  display: inline-block;
  transition: opacity 0.2s ease;
}
.wt-nav__brand:hover .wt-brand-short,
.wt-nav__brand.is-expanded .wt-brand-short { opacity: 0; }

/* Абсолютно позиционирована — не двигает соседние элементы */
.wt-brand-full {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  white-space: nowrap;
  color: var(--fg);
  clip-path: inset(0 100% 0 0);
  transition: clip-path 0.65s var(--ease-out);
  z-index: 10;
}
.wt-nav__brand:hover .wt-brand-full,
.wt-nav__brand.is-expanded .wt-brand-full { clip-path: inset(0 0% 0 0); }

.wt-nav__links {
  display: flex;
  gap: clamp(16px, 3vw, 36px);
  list-style: none;
  margin: 0;
  padding: 0;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.wt-nav__links a {
  font-size: 0.85rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--fg);
  opacity: 0.78;
  position: relative;
  padding: 6px 0;
  transition: opacity var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.wt-nav__links a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur-med) var(--ease-out);
}
.wt-nav__links a:hover { opacity: 1; color: var(--fg); }
.wt-nav__links a:hover::after { transform: scaleX(1); }

/* Иконки соцсетей в навбаре */
.wt-nav__right {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
}

.wt-social {
  display: flex;
  align-items: center;
  gap: 18px;
}
.wt-social__link {
  display: flex;
  align-items: center;
  color: var(--fg-muted);
  transition: color var(--dur-fast) var(--ease-out);
}
.wt-social__link:hover { color: var(--fg); }

.wt-lang-switch {
  display: inline-flex;
  border: var(--border-card);
  border-radius: var(--radius-pill);
  overflow: hidden;
}
.wt-lang-switch button {
  padding: 6px 14px;
  font-size: 0.75rem;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--fg-muted);
  transition: color var(--dur-fast), background var(--dur-fast);
}
.wt-lang-switch button.is-active {
  background: var(--accent);
  color: var(--fg);
}
.wt-lang-switch button:hover:not(.is-active) { color: var(--fg); }

/* ---------- Card (per spec: 2px border #545454) ---------- */
.wt-card {
  background: var(--bg-elevated);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--dur-med) var(--ease-out),
              transform var(--dur-med) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out);
}
.wt-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-red);
}

/* ---------- Buttons ---------- */
.wt-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border: var(--border-card);
  border-radius: var(--radius-pill);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  font-size: 0.85rem;
  color: var(--fg);
  background: transparent;
  transition: all var(--dur-fast) var(--ease-out);
}
.wt-btn:hover { border-color: var(--fg); transform: translateY(-1px); }
.wt-btn:active { transform: translateY(0); }

.wt-btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--fg);
}
.wt-btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.wt-btn--primary:active { background: var(--accent-press); border-color: var(--accent-press); }

.wt-btn--ghost { border-color: var(--border-soft); }

/* ---------- Адаптив: скрываем ссылки до наслоения, соцсети заполняют место ---------- */
@media (max-width: 1100px) {
  .wt-nav__links { display: none; }

  /* nav__right растягивается на освободившееся пространство */
  .wt-nav__right {
    flex: 1;
    margin-left: 24px;
    justify-content: flex-end;
  }
  /* Иконки соцсетей равномерно заполняют пространство */
  .wt-social {
    flex: 1;
    justify-content: space-evenly;
    max-width: 360px;
  }
}

/* ---------- Мобильный ---------- */
@media (max-width: 720px) {
  .wt-nav { padding: 12px 16px; }
  .section { padding: 56px 0; }
  .wt-card { padding: var(--space-5); }

  /* Иконки чуть меньше на телефоне */
  .wt-social__link svg { width: 20px; height: 20px; }
}

/* ---------- Бургер-кнопка ---------- */
.wt-nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
  flex-shrink: 0;
}
.wt-nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform 280ms cubic-bezier(0.22, 1, 0.36, 1),
              opacity 280ms ease;
  transform-origin: center;
}
.wt-nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.wt-nav__burger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.wt-nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Выпадающее меню под хедером ---------- */
.wt-nav__mobile-menu {
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 150;
  padding: 12px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  animation: wt-menu-drop 280ms cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes wt-menu-drop {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Карточки мобильной навигации ---------- */
.wt-nav__mobile-cards {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.wt-nav__mobile-card {
  width: 100%;
  display: flex;
  flex-direction: column;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: var(--border-card);
  border-radius: 14px;
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  cursor: pointer;
  overflow: hidden;
  padding: 0;
  text-align: left;
  transition: border-color var(--dur-med) var(--ease-out),
              background   var(--dur-med) var(--ease-out),
              box-shadow   var(--dur-med) var(--ease-out);
}
.wt-nav__mobile-card:hover { border-color: var(--fg); }
.wt-nav__mobile-card.is-active {
  border-color: var(--accent);
  background: rgba(254, 1, 40, 0.10);
  box-shadow: var(--shadow-red);
}
.wt-nav__mobile-card__header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 14px 20px;
}
.wt-nav__mobile-card__line {
  flex: 1;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: box-shadow var(--dur-med);
}
.wt-nav__mobile-card.is-active .wt-nav__mobile-card__line {
  box-shadow: 0 0 8px var(--accent);
}
.wt-nav__mobile-card__label { white-space: nowrap; }
.wt-nav__mobile-card__desc {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 400ms cubic-bezier(0.22, 1, 0.36, 1);
}
.wt-nav__mobile-card__desc.is-open { grid-template-rows: 1fr; }
.wt-nav__mobile-card__desc-inner { overflow: hidden; }
.wt-nav__mobile-card__divider {
  height: 1px;
  background: var(--accent);
  width: 86%;
  margin: 0 auto;
}
.wt-nav__mobile-card__desc-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 12px 20px 14px;
}
.wt-nav__mobile-card__desc-line {
  font-size: 0.88rem;
  line-height: 1.3;
  color: var(--fg);
  text-transform: none;
  letter-spacing: normal;
  text-align: center;
}
.wt-nav__mobile-card__hint {
  margin-top: 6px;
  font-size: 1rem;
  color: var(--accent);
  opacity: 0.8;
}

/* ---------- Соцсети и язык в бургер-меню ---------- */
.wt-nav__mobile-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 6px 0 2px;
}
.wt-nav__mobile-bottom .wt-social__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}
.wt-nav__mobile-bottom .wt-social__link svg { width: 30px; height: 30px; }

/* ---------- Адаптив: бургер и мобильное меню ---------- */
@media (max-width: 1100px) {
  .wt-nav__burger { display: flex; margin-left: 8px; }
  .wt-nav__links  { display: none; }
}

@media (min-width: 769px) and (max-width: 1100px) {
  .wt-nav__right {
    display: flex !important;
    flex: 0 0 auto;
    margin-left: auto;
    gap: 8px;
    align-items: center;
  }
  .wt-nav__right .wt-social { gap: 4px; }
  .wt-nav__right .wt-social__link {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 30px;
    width: 36px;
  }
  .wt-nav__right .wt-social__link svg { width: 24px; height: 24px; }
  .wt-nav__mobile-bottom { display: none; }
}

@media (max-width: 768px) {
  .wt-nav__right { display: none; }
  .wt-nav__mobile-bottom { display: flex; }
}

/* ---------- Topographic background (vk cover) — full bleed ---------- */
.wt-topo-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: #000 image-set(
    url('../assets/bg-main.webp') type('image/webp'),
    url('../assets/обои без компаса 1-1 контраст.jpg') type('image/jpeg')
  ) center/cover no-repeat;
  opacity: 1;
  pointer-events: none;
}
/* very subtle darkening at the corners only — keeps the topo + compass legible
   end-to-end while ensuring overlaid UI still sits on near-black */
.wt-topo-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 55%, rgba(0,0,0,0.35) 100%);
}