/* =========================================================
   sidebar.css — .sidebar block
   Figma specs: white bg, fluid padding via clamp(), logo + nav + phone + socials
   ========================================================= */

/* ---------------------------------------------------------
   .sidebar
   --------------------------------------------------------- */
.sidebar {
  position: sticky;
  top: 0;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--color-sidebar-bg);
  color: var(--color-text-primary);
  padding: clamp(16px, 3.5vw, 40px);
  /* Top padding matches the optical gap between logo and "ГЛАВНАЯ"
     produced by .nav__link line-height (2.2em ⇒ ~0.6em above caps). */
  padding-top: clamp(6px, 0.7vw, 9px);
  z-index: var(--z-sidebar);
  overflow: hidden;
  /* No border-right: the 1px .layout gap shows #dee2e3 as separator */
}

/* ---------------------------------------------------------
   .sidebar__logo
   --------------------------------------------------------- */
.sidebar__logo {
  flex-shrink: 0;
  margin-bottom: 0;
}

.sidebar__logo-link {
  display: inline-block;
  transition: opacity var(--transition-base);
}

.sidebar__logo-link:hover,
.sidebar__logo-link:focus-visible {
  opacity: 0.75;
}

.sidebar__logo-img {
  display: block;
  width: 100%;
  max-width: min(100%, 241px);
  height: auto;
  filter: var(--logo-filter);
}

/* ---------------------------------------------------------
   .sidebar__nav
   --------------------------------------------------------- */
.sidebar__nav {
  flex: 1;
  overflow-y: auto;
  scrollbar-width: none;
}

.sidebar__nav::-webkit-scrollbar {
  display: none;
}

/* ---------------------------------------------------------
   .sidebar__footer
   --------------------------------------------------------- */
.sidebar__footer {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ---------------------------------------------------------
   .sidebar__divider
   Two-line divider matching Figma Line 6 + Line 7
   --------------------------------------------------------- */
.sidebar__divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 0 0 1px;
}

.sidebar__divider + .sidebar__phone {
  margin-top: 0;
}

/* ---------------------------------------------------------
   .sidebar__phone
   Figma: Roboto 400, 18px, line-height 2.4em, color #000
   --------------------------------------------------------- */
.sidebar__phone {
  display: inline-block;
  font-family: var(--font-family-ui);
  font-size: clamp(13px, 1.2vw, 18px);
  font-weight: 400;
  line-height: 2.4em;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.sidebar__phone:hover,
.sidebar__phone:focus-visible {
  color: var(--color-accent);
}

/* ---------------------------------------------------------
   .sidebar__socials
   --------------------------------------------------------- */
.sidebar__socials {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  margin-top: var(--space-sm);
}

/* ---------------------------------------------------------
   .sidebar__social-link
   --------------------------------------------------------- */
.sidebar__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: opacity var(--transition-base), transform var(--transition-base);
  overflow: hidden;
}

.sidebar__social-link:hover,
.sidebar__social-link:focus-visible {
  opacity: 0.85;
  transform: translateY(-2px);
}

.sidebar__social-link img {
  display: block;
  width: 40px;
  height: 40px;
}

/* ---------------------------------------------------------
   Responsive — mobile (≤ 809px)
   Sidebar becomes off-canvas drawer
   --------------------------------------------------------- */
@media (max-width: 809px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: min(86vw, 360px);
    height: 100dvh;
    border-right: 1px solid var(--color-border);
    border-bottom: none;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    z-index: calc(var(--z-sidebar) + 3);
  }

  .sidebar__logo {
    margin-bottom: var(--space-lg);
  }

  .sidebar__logo-img {
    max-width: min(180px, 100%);
  }

  .sidebar__nav {
    flex: 1;
    overflow-y: auto;
  }

  .sidebar__footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .sidebar__divider {
    display: block;
  }

  .sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    border: 0;
    padding: 0;
    z-index: calc(var(--z-sidebar) + 1);
  }

  .page.sidebar-open {
    overflow: hidden;
  }

  .page.sidebar-open .sidebar {
    transform: translateX(0);
  }

  .page.sidebar-open .mobile-topbar__burger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .page.sidebar-open .mobile-topbar__burger-line:nth-child(2) {
    opacity: 0;
  }

  .page.sidebar-open .mobile-topbar__burger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}