/* ============================================
   КИТАЙ ВСЁ ПО ДЕЛУ — Layout
   Mobile-first approach, uses tokens from variables.css
   ============================================ */


/* ————————————————————————————————————————————
   1. PAGE LAYOUT
   ———————————————————————————————————————————— */

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page__content {
  flex: 1;
}

.page-header {
  padding: var(--space-6) var(--container-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.page-header__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-dark);
}


/* ————————————————————————————————————————————
   2. HEADER
   ———————————————————————————————————————————— */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: none;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--container-padding);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

/* — Logo — */

.header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.header__logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  white-space: nowrap;
}

/* — Nav — */

.header__nav {
  display: none;
  gap: var(--space-8);
}

.header__nav-link {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-dark);
  text-decoration: none;
  transition: color var(--transition-base);
}

.header__nav-link:hover {
  color: var(--color-primary);
}

.header__nav-link--active {
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

/* — Right section — */

.header__right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* — Burger (visible on mobile by default) — */

.header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.header__burger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-dark);
  margin: 3px 0;
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Burger → X animation */
.header__burger--open .header__burger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.header__burger--open .header__burger-line:nth-child(2) {
  opacity: 0;
}

.header__burger--open .header__burger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* — Header shadow on scroll — */
.header--scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
}

/* Active nav indicator */
.header__nav-link--active {
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
  position: relative;
}

.header__nav-link--active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* — Icon buttons (search, notifications) — */
.header__icon-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-dark);
  border-radius: var(--radius-md);
  transition: background var(--transition-base), color var(--transition-base);
  position: relative;
  -webkit-tap-highlight-color: transparent;
}

.header__icon-btn:hover {
  background: var(--color-gray-bg);
  color: var(--color-primary);
}

.header__icon-btn svg {
  width: 22px;
  height: 22px;
}

/* Notification badge */
.header__badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-white);
}

/* — Dropdown "Ещё" — */
.header__nav-item {
  position: relative;
}

.header__dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-dark);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: color var(--transition-base);
}

.header__dropdown-toggle:hover {
  color: var(--color-primary);
}

.header__dropdown-toggle svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-base);
}

.header__dropdown-toggle--open svg {
  transform: rotate(180deg);
}

.header__dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-3));
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: var(--z-dropdown);
}

.header__dropdown-menu--open {
  opacity: 1;
  visibility: visible;
}

.header__dropdown-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-dark);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.header__dropdown-link:hover {
  background: var(--color-gray-bg);
  color: var(--color-primary);
}

/* — Telegram button in header — */
.header__tg-btn {
  display: none;
}

/* — Mobile search icon (always visible on mobile) — */
.header__search-mobile {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-dark);
  -webkit-tap-highlight-color: transparent;
}

.header__search-mobile svg {
  width: 22px;
  height: 22px;
}

/* Desktop: show nav, hide burger */
@media (min-width: 1025px) {
  .header__nav {
    display: flex;
    align-items: center;
  }

  .header__burger {
    display: none;
  }

  .header__icon-btn {
    display: flex;
  }

  .header__tg-btn {
    display: inline-flex;
  }

  .header__search-mobile {
    display: none;
  }
}


/* ————————————————————————————————————————————
   3. MOBILE MENU
   ———————————————————————————————————————————— */

.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height));
  background-color: var(--color-white);
  z-index: var(--z-dropdown);
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-menu--open {
  transform: translateX(0);
}

.mobile-menu__link {
  display: block;
  width: 100%;
  padding: var(--space-4) var(--container-padding);
  border-bottom: 1px solid var(--color-gray-border);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-dark);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.mobile-menu__link:hover,
.mobile-menu__link:active {
  background-color: var(--color-gray-bg);
  color: var(--color-primary);
}

.mobile-menu__link--active {
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

/* Overlay behind menu */
.mobile-menu-overlay {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height));
  background-color: rgba(0, 0, 0, 0.4);
  z-index: calc(var(--z-dropdown) - 1);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.mobile-menu-overlay--visible {
  opacity: 1;
  visibility: visible;
}

/* Hide mobile menu elements on desktop */
@media (min-width: 1025px) {
  .mobile-menu,
  .mobile-menu-overlay {
    display: none;
  }
}


/* ————————————————————————————————————————————
   4. FOOTER
   ———————————————————————————————————————————— */

.footer {
  background-color: var(--color-dark);
  padding: var(--space-16) var(--container-padding);
  position: relative;
}

/* Gradient line top */
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--color-primary) 50%, transparent 100%);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}

.footer__logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--space-3);
}

.footer__text {
  font-size: var(--font-size-base);
  color: var(--color-gray);
  line-height: var(--line-height-relaxed);
}

.footer__title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.footer__link {
  display: block;
  font-size: var(--font-size-base);
  color: var(--color-gray);
  text-decoration: none;
  margin-bottom: var(--space-2);
  transition: color var(--transition-base);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__bottom {
  grid-column: 1 / -1;
  border-top: 1px solid #333;
  padding-top: var(--space-6);
  margin-top: var(--space-6);
  font-size: var(--font-size-sm);
  color: var(--color-gray);
}

/* Footer desktop: 4-column layout */
@media (min-width: 769px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}


/* ————————————————————————————————————————————
   5. BREADCRUMBS
   ———————————————————————————————————————————— */

.breadcrumbs {
  padding: var(--space-5) var(--container-padding);
  font-size: var(--font-size-base);
  color: var(--color-gray);
  line-height: var(--line-height-normal);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumbs__item {
  display: inline;
}

.breadcrumbs__link {
  color: var(--color-gray);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumbs__link:hover {
  color: var(--color-primary);
}

.breadcrumbs__separator {
  margin: 0 var(--space-2);
  color: var(--color-gray-light);
  user-select: none;
}

.breadcrumbs__current {
  color: var(--color-dark);
  font-weight: var(--font-weight-medium);
}


/* ————————————————————————————————————————————
   6. MOBILE BOTTOM NAV
   ———————————————————————————————————————————— */

.nav-bottom {
  display: none;
}

@media (max-width: 768px) {
  .nav-bottom {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.06);
    z-index: var(--z-sticky);
  }

  .nav-bottom__item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--space-2) 0;
    font-size: var(--font-size-xs);
    color: var(--color-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
  }

  .nav-bottom__item--active {
    color: var(--color-primary);
  }

  .nav-bottom__icon {
    font-size: var(--font-size-xl);
    line-height: 1;
  }

  /* Offset page content so bottom nav doesn't overlap */
  .page__content {
    padding-bottom: 60px;
  }
}


/* ————————————————————————————————————————————
   7. GRID UTILITIES
   ———————————————————————————————————————————— */

.grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

/* 2-column grid */
.grid--2 {
  grid-template-columns: 1fr;
}

/* 3-column grid */
.grid--3 {
  grid-template-columns: 1fr;
}

/* 4-column grid */
.grid--4 {
  grid-template-columns: 1fr;
}

/* Tablet: 2 columns for grid--2, grid--3, grid--4 */
@media (min-width: 769px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop: full column counts for grid--3 and grid--4 */
@media (min-width: 1025px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}


/* ————————————————————————————————————————————
   8. SCROLL TO TOP
   ———————————————————————————————————————————— */

.scroll-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-sticky);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-base), transform var(--transition-base), background var(--transition-base);
  pointer-events: none;
}

.scroll-top--visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-top:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

.scroll-top svg {
  width: 22px;
  height: 22px;
}

@media (max-width: 768px) {
  .scroll-top {
    bottom: 80px; /* Над нижней навигацией */
    right: var(--space-4);
    width: 44px;
    height: 44px;
  }
}


/* ————————————————————————————————————————————
   9. RIPPLE EFFECT FOR BUTTONS
   ———————————————————————————————————————————— */

.btn {
  position: relative;
  overflow: hidden;
}

@keyframes rippleExpand {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

.btn__ripple {
  position: absolute;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.35);
  width: 50px;
  height: 50px;
  margin-top: -25px;
  margin-left: -25px;
  animation: rippleExpand 0.5s ease-out forwards;
  pointer-events: none;
}