/* header.css  */

:root {
  --font-main: 'Inter', sans-serif;
  --transition-speed: 0.4s;
  --transition-curve: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --header-padding-x: 40px;
  --header-height: 110px;
  /* Светлая тема */
  --header-bg: rgba(255, 255, 255, 0.7);
  --header-glass-border: rgba(0, 0, 0, 0.05);
  --header-text-color: #212529;
  --link-color: #495057;
  --link-hover-color: #0056b3;
  --dropdown-bg: #ffffff;
  --dropdown-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  --dropdown-item-hover-bg: #f1f3f5;
  --control-icon-color: #6c757d;
  --control-icon-hover-color: #0056b3;
  --search-bg: #f1f3f5;
  --search-focus-border: #80bdff;
  --search-focus-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2);
  --mobile-menu-bg: #ffffff;
  --mobile-menu-backdrop: rgba(0, 0, 0, 0.5);
  --mobile-menu-border: #e9ecef;
  --mobile-footer-bg: #f8f9fa;
  --hamburger-color: #343a40;
}

.dark-mode {
  --header-bg: rgba(28, 28, 30, 0.65);
  --header-glass-border: rgba(255, 255, 255, 0.1);
  --header-text-color: #e0e0e0;
  --link-color: #adb5bd;
  --link-hover-color: #a9cfff;
  --dropdown-bg: #252525;
  --dropdown-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
  --dropdown-item-hover-bg: #333;
  --control-icon-color: #adb5bd;
  --control-icon-hover-color: #a9cfff;
  --search-bg: #2c2c2c;
  --search-focus-border: #a9cfff;
  --search-focus-shadow: 0 0 0 3px rgba(108, 117, 125, 0.5);
  --mobile-menu-bg: #1c1c1c;
  --mobile-menu-backdrop: rgba(0, 0, 0, 0.7);
  --mobile-menu-border: #333;
  --mobile-footer-bg: #252529;
  --hamburger-color: #e0e0e0;
}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ================== ОСНОВА ШАПКИ (ДЕСКТОП) ================== */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  position: relative; z-index: 1000; width: 100%; height: var(--header-height);
  padding: 0 var(--header-padding-x); background-color: var(--header-bg);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-sizing: border-box; font-family: var(--font-main);
  box-shadow: 0 2px 4px rgba(0,0,0,0.02), 0 4px 12px rgba(0,0,0,0.04);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
.site-header__left, .site-header__right { flex-shrink: 0; z-index: 2; }
.site-header__logo { height: 70px; width: auto; }

/* --- Навигация --- */
.site-header__nav { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); z-index: 1; }
.site-header__menu-row { display: flex; justify-content: center; list-style: none; padding: 0; margin: 0; gap: 8px; align-items: center; }
.site-header__menu-row--primary { margin-bottom: 8px; }
.site-header__menu-item { position: relative; }
.site-header__menu-link, .site-header__dropdown-toggle {
  display: flex; align-items: center; padding: 8px 14px;
  border-radius: 6px; background: none; border: none; cursor: pointer;
  font-family: inherit; font-size: 15px; font-weight: 500;
  color: var(--link-color); text-decoration: none; white-space: nowrap;
  transition: background-color 0.2s ease, color 0.2s ease; outline: none;
}
.site-header__menu-item:hover > .site-header__menu-link,
.site-header__menu-item:hover > .site-header__dropdown-toggle {
  background-color: var(--dropdown-item-hover-bg); color: var(--link-hover-color);
}
.site-header__menu-link:focus-visible, .site-header__dropdown-toggle:focus-visible {
  color: var(--link-hover-color); outline: 2px solid var(--link-hover-color); outline-offset: 2px;
}

/* --- Выпадающее меню (десктоп) --- */
.site-header__dropdown-toggle::after { content: "▾"; font-size: 10px; margin-left: 6px; display: inline-block; transition: transform 0.3s ease-out; }
.site-header__dropdown.is-open > .site-header__dropdown-toggle::after { transform: rotate(180deg); }
.site-header__dropdown.is-open { z-index: 10; }
.site-header__dropdown-menu {
  background-color: var(--dropdown-bg); border: 1px solid var(--header-glass-border);
  box-shadow: var(--dropdown-shadow); position: absolute; top: calc(100% + 5px); left: 50%;
  min-width: 240px; border-radius: 12px; list-style: none; padding: 8px; margin: 0;
  opacity: 0; visibility: hidden;
  transform: translateX(-50%) translateY(10px);
  transition: opacity 0.25s ease-out, visibility 0.25s ease-out, transform 0.25s ease-out;
  z-index: 1001; will-change: transform, opacity;
}
.site-header__dropdown.is-open > .site-header__dropdown-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.site-header__dropdown-menu .site-header__menu-link { width: 100%; padding: 10px 16px; border-radius: 8px; }
.site-header__dropdown-menu .site-header__menu-item:hover > .site-header__menu-link { background-color: var(--dropdown-item-hover-bg); color: var(--link-hover-color); }
.site-header__dropdown-menu .site-header__menu-link:focus-visible { background-color: var(--dropdown-item-hover-bg); color: var(--link-hover-color); outline: 2px solid var(--link-hover-color); outline-offset: -1px; }

/* --- Правая часть и поиск (десктоп) --- */
.site-header__right { display: flex; flex-direction: column; align-items: flex-end; justify-content: center; gap: 8px; }
.site-header__controls { display: flex; gap: 8px; }
.site-header__control-button { display: flex; align-items: center; justify-content: center; width: 38px; height: 38px; background: none !important; border: none; border-radius: 50%; color: var(--control-icon-color); font-size: 16px; cursor: pointer; text-decoration: none; transition: color 0.2s ease, transform 0.2s ease; outline: none; }
.site-header__control-button:hover { color: var(--control-icon-hover-color); transform: scale(1.1); }
.site-header__control-button:focus-visible { color: var(--control-icon-hover-color); transform: scale(1.1); outline: 2px solid var(--link-hover-color); outline-offset: 2px; }
.site-header__accessibility-toggle.is-active { color: var(--control-icon-hover-color); transform: scale(1.1); }
.site-header__theme-icon-wrapper { position: relative; display: flex; align-items: center; justify-content: center; width: 1em; height: 1em; }
.site-header__theme-icon { position: absolute; transition: transform var(--transition-speed) var(--transition-curve), opacity calc(var(--transition-speed) / 2) ease; }
.site-header__theme-icon--sun { transform: scale(1) rotate(0deg); opacity: 1; }
.site-header__theme-icon--moon { transform: scale(0.5) rotate(-90deg); opacity: 0; }
.dark-mode .site-header__theme-icon--sun { transform: scale(0.5) rotate(90deg); opacity: 0; }
.dark-mode .site-header__theme-icon--moon { transform: scale(1) rotate(0deg); opacity: 1; }
@keyframes site-header-blink-effect { 50% { transform: scale(1, 0.1); } }
.site-header__accessibility-toggle.is-blinking > i { animation: site-header-blink-effect 0.4s ease-in-out; }
.site-header__search-form { display: flex; align-items: center; position: relative; }
.site-header__search-input { width: 220px; height: 38px; padding: 0 40px 0 15px; border: 1px solid transparent; border-radius: 20px; background-color: var(--search-bg); color: var(--header-text-color); font-family: inherit; font-size: 14px; transition: all 0.2s ease; }
.site-header__search-input:focus { outline: none; box-shadow: var(--search-focus-shadow); border-color: var(--search-focus-border); }
.site-header__search-button { position: absolute; right: 0; top: 0; height: 100%; width: 40px; background: none; border: none; color: var(--control-icon-color); font-size: 15px; cursor: pointer; padding: 0; transition: color 0.2s ease; }
.site-header__search-button:hover { color: var(--link-hover-color); }

/* ================== АДАПТИВНОСТЬ И МОБИЛЬНОЕ МЕНЮ (ПРОРАБОТАННАЯ ВЕРСИЯ) ================== */
.site-header__mobile-controls, .mobile-menu { display: none; }

/* Обеспечиваем правильное позиционирование автокомплита */
.site-header__search-box,
.mobile-menu__search-box {
    position: relative;
}

@media (max-width: 1200px) {
  .site-header { padding: 0 20px; height: 80px; }
  .site-header__nav, .site-header__right { display: none; }
  .site-header { justify-content: space-between; }
  .site-header__logo { height: 55px; }
  .site-header__mobile-controls { display: block; z-index: 1012; }
  
  .site-header__mobile-toggle { display: flex; flex-direction: column; justify-content: space-around; width: 28px; height: 28px; padding: 0; border: none; background: transparent; cursor: pointer; }
  .site-header__mobile-toggle-line { width: 100%; height: 2px; background-color: var(--hamburger-color); border-radius: 2px; transform-origin: center; transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.2s ease-in-out; }
  .is-mobile-menu-open .site-header__mobile-toggle-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .is-mobile-menu-open .site-header__mobile-toggle-line:nth-child(2) { opacity: 0; }
  .is-mobile-menu-open .site-header__mobile-toggle-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* --- Панель мобильного меню --- */
  .mobile-menu {
    display: flex; flex-direction: column; position: fixed; top: 0; right: 0; 
    width: min(320px, 90vw); height: 100%; 
    background-color: var(--mobile-menu-bg); box-shadow: -5px 0 25px rgba(0,0,0,0.1);
    transform: translateX(100%); z-index: 1010;
    /* УЛУЧШЕНИЕ: Более плавная и "физичная" анимация */
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    font-family: var(--font-main);
  }
  .is-mobile-menu-open .mobile-menu { transform: translateX(0); }
  
  /* --- Затемнение фона --- */
  .is-mobile-menu-open::before { content: ''; position: fixed; inset: 0; background-color: var(--mobile-menu-backdrop); z-index: 1009; opacity: 1; transition: opacity 0.4s ease; }
  body:not(.is-mobile-menu-open)::before { opacity: 0; pointer-events: none; }
  
  .mobile-menu__header { display: flex; align-items: center; justify-content: flex-end; height: 80px; padding: 0 10px; flex-shrink: 0; border-bottom: 1px solid var(--mobile-menu-border); }
  .mobile-menu__close { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; font-size: 20px; background:none; border:none; cursor:pointer; color: var(--control-icon-color); border-radius: 50%; }
  .mobile-menu__close:focus-visible { outline: 2px solid var(--link-hover-color); }
  
  .mobile-menu__content { padding: 8px; flex-grow: 1; overflow-y: auto; display: flex; flex-direction: column; }
  
  /* --- Навигация в моб. меню --- */
  .mobile-menu__nav { flex-grow: 1; }
  .mobile-menu__list { list-style: none; padding: 0; margin: 0; }
  /* УЛУЧШЕНИЕ: Каскадная анимация пунктов */
  .mobile-menu__item { opacity: 0; transform: translateX(15px); transition: opacity 0.3s ease-out, transform 0.3s ease-out; }
  .is-mobile-menu-open .mobile-menu__item { opacity: 1; transform: translateX(0); }
  /* Динамическая задержка для каскада задается в JS */

  .mobile-menu__menu-link, .mobile-menu__dropdown-toggle {
    display: flex; justify-content: space-between; align-items: center; width: 100%;
    min-height: 44px; /* УЛУЧШЕНИЕ: Минимальный размер для удобства нажатия */
    padding: 10px 12px; font-size: 16px; font-weight: 500;
    color: var(--header-text-color); text-decoration: none;
    background: none; border: none; cursor: pointer; text-align: left;
    border-radius: 8px; transition: background-color 0.2s ease, color 0.2s ease;
  }
  .mobile-menu__item:hover > .mobile-menu__menu-link,
  .mobile-menu__item:hover > .mobile-menu__dropdown-toggle { background-color: var(--dropdown-item-hover-bg); }
  .mobile-menu__menu-link:focus-visible, 
  .mobile-menu__dropdown-toggle:focus-visible { outline: 2px solid var(--link-hover-color); outline-offset: -2px; }

  /* --- Выпадающие списки в моб. меню --- */
  .mobile-menu__dropdown-toggle::after { content: "▸"; font-size: 12px; transition: transform 0.25s ease-out; }
  .mobile-menu__dropdown.is-open > .mobile-menu__dropdown-toggle::after { transform: rotate(90deg); }
  /* УЛУЧШЕНИЕ: Визуальный акцент на активном родительском пункте */
  .mobile-menu__dropdown.is-open > .mobile-menu__dropdown-toggle { background-color: var(--dropdown-item-hover-bg); }
  .mobile-menu__dropdown-menu { list-style: none; padding: 4px 0 4px 15px; margin: 0; max-height: 0; overflow: hidden; transition: max-height 0.3s ease-in-out; }
  .mobile-menu__dropdown.is-open > .mobile-menu__dropdown-menu { max-height: 1000px; }
  .mobile-menu__dropdown-menu .mobile-menu__menu-link { font-size: 15px; color: var(--link-color); min-height: 40px; }
  
  /* --- Футер моб. меню --- */
  .mobile-menu__footer {
    flex-shrink: 0; margin-top: auto; padding: 16px;
    background-color: var(--mobile-footer-bg);
    border-radius: 12px; border: 1px solid var(--mobile-menu-border);
  }
  .mobile-menu__search-box { background-color: var(--mobile-menu-bg); border-radius: 8px; border: 1px solid var(--mobile-menu-border); margin-bottom: 12px; transition: border-color 0.2s ease, box-shadow 0.2s ease; }
  .mobile-menu__search-box:focus-within { border-color: var(--search-focus-border); box-shadow: var(--search-focus-shadow); }
  .mobile-menu__search-input { background: transparent; border: none; width: 100%; height: 44px; }
  .mobile-menu__search-button { color: var(--control-icon-color); }
  .mobile-menu__controls { display: flex; justify-content: space-around; align-items: center; flex-wrap: nowrap; gap: 8px; }
  .mobile-menu__control-button {
    /* УЛУЧШЕНИЕ: Четкое выравнивание и удобный размер */
    display: flex; align-items: center; justify-content: center;
    flex-grow: 1; /* Чтобы кнопки занимали все доступное место */
    height: 44px; font-size: 18px;
    background: none !important; color: var(--control-icon-color);
    border-radius: 8px; outline: none; text-decoration: none;
    transition: color 0.2s ease, background-color 0.2s ease;
  }
  .mobile-menu__control-button:hover { color: var(--control-icon-hover-color); background-color: var(--dropdown-item-hover-bg); }
  .mobile-menu__control-button:focus-visible { outline: 2px solid var(--link-hover-color); }
}