/* ==========================================================================
   Block: Authentic 3-Tier Site Header (SchoolAttestation)
   Tier 1: Announcement Bar (#F96E33)
   Tier 2: Utility Bar (#614D8F)
   Tier 3: Main Navigation Bar (#7F67B4 with diagonal facet)
   ========================================================================== */

.site-header {
    position: relative;
    z-index: 100;
    width: 100%;
    background-color: transparent;
}

/* --------------------------------------------------------------------------
   Tier 1: Top Announcement Bar
   -------------------------------------------------------------------------- */
.site-header__top-bar {
    background-color: var(--sa-orange-primary, #F96E33);
    padding: 7px 0;
    position: relative;
    z-index: 3;
}

.site-header__top-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    text-align: center;
}

.site-header__top-text {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--sa-text-inverse, #ffffff);
    letter-spacing: -0.01em;
    line-height: 1.25;
}

.site-header__top-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--btn-padding-sm, 7px 18px);
    font-size: var(--btn-font-size-sm, 0.8125rem);
    font-family: var(--btn-font-family);
    font-weight: var(--btn-font-weight, 600);
    line-height: var(--btn-line-height, 1);
    color: var(--sa-text-inverse, #ffffff) !important;
    background-color: var(--sa-purple-accent, #7F67B4);
    border: none;
    border-radius: var(--btn-radius, 50px);
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    box-shadow: var(--btn-shadow-secondary, 0 4px 14px rgba(97, 77, 143, 0.25));
    transition: var(--btn-transition);
}

.site-header__top-btn:hover,
.site-header__top-btn:focus-visible {
    background-color: var(--sa-purple-dark, #4D3A75);
    color: var(--sa-text-inverse, #ffffff) !important;
    transform: var(--btn-hover-transform, translateY(-2px));
    box-shadow: var(--btn-shadow-secondary-hover, 0 8px 24px rgba(97, 77, 143, 0.40));
}

.site-header__top-btn:active {
    transform: var(--btn-active-transform, translateY(0) scale(0.98));
}

/* --------------------------------------------------------------------------
   Tier 2: Utility Bar
   -------------------------------------------------------------------------- */
.site-header__utility-bar {
    background-color: var(--sa-purple-primary, #614D8F);
    padding: 7px 0;
    position: relative;
    z-index: 2;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header__utility-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.site-header__utility-nav {
    display: flex;
    align-items: center;
}

.site-header__utility-list {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-header__utility-list li,
.site-header__utility-item {
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-header__utility-list li a,
.site-header__utility-link {
    display: inline-flex;
    align-items: center;
    padding: 5px 10px;
    font-size: 0.84375rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.92);
    border-radius: var(--radius-sm, 6px);
    text-decoration: none !important;
    white-space: nowrap;
    transition: color var(--transition-fast, 0.2s ease), background-color var(--transition-fast, 0.2s ease);
}

.site-header__utility-list li a:hover,
.site-header__utility-list li a:focus-visible,
.site-header__utility-link:hover,
.site-header__utility-link:focus-visible {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.14);
    text-decoration: none !important;
}

.site-header__utility-list li.current-menu-item > a,
.site-header__utility-list li.current_page_item > a,
.site-header__utility-link.is-active {
    color: #ffffff;
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.18);
    text-decoration: none !important;
}

.site-header__utility-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.site-header__login-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--btn-padding-sm, 7px 18px);
    font-size: var(--btn-font-size-sm, 0.8125rem);
    font-family: var(--btn-font-family);
    font-weight: var(--btn-font-weight, 600);
    line-height: var(--btn-line-height, 1);
    color: var(--btn-primary-color, #ffffff) !important;
    background-color: var(--btn-primary-bg, #F96E33);
    border-radius: var(--btn-radius, 50px);
    text-decoration: none;
    white-space: nowrap;
    box-shadow: var(--btn-shadow-primary, 0 4px 14px rgba(249, 110, 51, 0.35));
    transition: var(--btn-transition);
}

.site-header__login-btn:hover,
.site-header__login-btn:focus-visible {
    background-color: var(--btn-primary-hover-bg, #FF7F50);
    color: var(--btn-primary-color, #ffffff) !important;
    transform: var(--btn-hover-transform, translateY(-2px));
    box-shadow: var(--btn-shadow-primary-hover, 0 8px 24px rgba(249, 110, 51, 0.48));
}

.site-header__login-btn:active {
    transform: var(--btn-active-transform, translateY(0) scale(0.98));
}

.site-header__phone {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    color: var(--sa-text-inverse, #ffffff);
    transition: opacity var(--transition-fast);
}

.site-header__phone:hover {
    opacity: 0.85;
}

.site-header__phone--city {
    font-size: 0.9375rem;
    font-weight: 500;
    white-space: nowrap;
}

.site-header__phone-free {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    line-height: 1.1;
    white-space: nowrap;
}

.site-header__phone--tollfree {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--sa-text-inverse, #ffffff);
}

.site-header__phone-accent {
    color: var(--sa-orange-primary, #F96E33);
    margin-right: 4px;
}

.site-header__phone-sub {
    font-size: 0.6875rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
    margin-top: 2px;
}

/* --------------------------------------------------------------------------
   Tier 3: Main Navigation Bar
   -------------------------------------------------------------------------- */
.site-header__main-bar {
    background-color: var(--sa-purple-accent, #7F67B4);
    background: linear-gradient(115deg, var(--sa-purple-accent, #7F67B4) 0%, var(--sa-purple-accent, #7F67B4) 78%, #725DA2 78.1%, #725DA2 100%);
    padding: 6px 0;
    position: relative;
    z-index: 1;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.site-header__main-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

/* Logo */
.site-header__logo {
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.site-header__logo:hover {
    opacity: 0.9;
}

.site-header__logo-img {
    display: block;
    width: 120px;
    height: 60px;
    aspect-ratio: 120 / 60;
}

/* Nav Menu */
.site-header__nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 2px;
    margin: 0;
    padding: 0;
}

.nav-menu li,
.nav-menu__item {
    position: relative;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li a,
.nav-menu__link {
    display: inline-flex;
    align-items: center;
    padding: 8px 12px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--sa-text-inverse, #ffffff);
    border-radius: var(--radius-sm, 6px);
    text-decoration: none;
    white-space: nowrap;
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-menu li a:hover,
.nav-menu__link:hover {
    color: var(--sa-text-inverse, #ffffff);
    background-color: rgba(255, 255, 255, 0.12);
}

.nav-menu li.current-menu-item > a,
.nav-menu li.current_page_item > a,
.nav-menu__link.is-active {
    color: var(--sa-text-inverse, #ffffff);
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.15);
}

/* Dropdown Submenu */
.nav-menu .sub-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    z-index: var(--z-header, 100);
    min-width: 260px;
    margin: 0;
    padding: 8px;
    list-style: none;
    border-radius: var(--radius-md, 12px);
    background-color: var(--sa-bg-surface, #ffffff);
    box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.35);
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.nav-menu li:hover > .sub-menu,
.nav-menu li:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-menu .sub-menu li {
    width: 100%;
}

.nav-menu .sub-menu a {
    display: flex;
    width: 100%;
    padding: 9px 14px;
    white-space: normal;
    color: var(--sa-text-body, #3B3B3B);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-sm, 8px);
}

.nav-menu .sub-menu a:hover {
    color: var(--sa-purple-primary, #614D8F);
    background-color: var(--sa-purple-bg, #F2ECFF);
}

/* Mobile Controls in Main Bar */
.site-header__mobile-controls {
    display: none;
    align-items: center;
    gap: 12px;
}

.site-header__mobile-phone {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-circle, 50%);
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--sa-text-inverse, #ffffff);
    text-decoration: none;
    transition: background-color var(--transition-fast);
}

.site-header__mobile-phone:hover {
    background-color: var(--sa-orange-primary, #F96E33);
}

/* Burger Toggle */
.site-header__toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--sa-text-inverse, #ffffff);
}

.site-header__toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--sa-text-inverse, #ffffff);
    margin: 5px 0;
    border-radius: var(--radius-xs, 2px);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* --------------------------------------------------------------------------
   Mobile Menu Drawer (Authentic Schoolattestation Design + Enhanced UX)
   -------------------------------------------------------------------------- */
.mobile-menu-drawer {
    display: none;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    z-index: 100000;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                visibility 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-menu-drawer.is-open {
    display: block;
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

/* Semi-transparent dark dimmed backdrop */
.mobile-menu-drawer__backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(18, 12, 32, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    cursor: pointer;
    z-index: 1;
}

/* Slide-out signature purple panel */
.mobile-menu-drawer__panel {
    position: relative;
    z-index: 2;
    top: 0;
    left: 0;
    width: min(350px, 84vw);
    max-width: 370px;
    height: 100%;
    background-color: var(--sa-purple-accent, #7F67B4);
    box-shadow: 6px 0 28px rgba(0, 0, 0, 0.35);
    display: flex;
    flex-direction: column;
    transform: translate3d(-100%, 0, 0);
    transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}

.mobile-menu-drawer.is-open .mobile-menu-drawer__panel {
    transform: translate3d(0, 0, 0);
}

/* Header inside drawer */
.mobile-menu-drawer__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 18px 0 18px;
    flex-shrink: 0;
}

.mobile-menu-drawer__logo {
    display: inline-block;
    flex-shrink: 0;
    line-height: 1;
    margin-top: 4px;
}

.mobile-menu-drawer__logo-img {
    width: 110px;
    height: auto;
    max-height: 52px;
    object-fit: contain;
    display: block;
}

.mobile-menu-drawer__header-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    min-width: 0;
}

.mobile-menu-drawer__close {
    background: transparent;
    border: none;
    color: var(--sa-text-inverse, #ffffff);
    cursor: pointer;
    padding: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm, 6px);
    line-height: 1;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.mobile-menu-drawer__close:hover,
.mobile-menu-drawer__close:focus-visible {
    opacity: 0.85;
    transform: scale(1.1);
}

.mobile-menu-drawer__phone-box {
    text-align: right;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    line-height: 1.15;
}

.mobile-menu-drawer__phone-link {
    color: var(--sa-text-inverse, #ffffff);
    font-size: 1.0625rem;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    letter-spacing: -0.01em;
    display: inline-block;
    transition: opacity 0.2s ease;
}

.mobile-menu-drawer__phone-link:hover {
    opacity: 0.9;
}

.mobile-menu-drawer__phone-accent {
    color: var(--sa-orange-primary, #F96E33);
    font-weight: 800;
    margin-right: 2px;
}

.mobile-menu-drawer__phone-sub {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 400;
    margin-top: 3px;
    letter-spacing: 0.01em;
}

/* Sawtooth Zigzag Separator */
.mobile-menu-drawer__zigzag {
    width: calc(100% - 36px);
    margin: 14px 18px 10px 18px;
    height: 8px;
    flex-shrink: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 6' width='12' height='6'%3E%3Cpath d='M0 5 L6 1 L12 5' fill='none' stroke='rgba(255,255,255,0.85)' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: repeat-x;
    background-position: left center;
    background-size: 12px 6px;
}

/* Scrollable body */
.mobile-menu-drawer__body {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 4px 18px 24px 18px;
    display: flex;
    flex-direction: column;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.25) transparent;
}

.mobile-menu-drawer__body::-webkit-scrollbar {
    width: 4px;
}

.mobile-menu-drawer__body::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-xs, 4px);
}

/* Main Navigation */
.mobile-menu-drawer__nav {
    width: 100%;
}

.mobile-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
}

.mobile-nav-list li,
.mobile-nav-list .nav-menu__item {
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
    border-bottom: 1px dotted rgba(255, 255, 255, 0.38);
}

.mobile-nav-list li > a,
.mobile-nav-list .nav-menu__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 11px 4px;
    color: var(--sa-text-inverse, #ffffff);
    font-size: 1.0625rem;
    font-weight: 400;
    text-decoration: none;
    line-height: 1.3;
    transition: background-color 0.2s ease, opacity 0.2s ease;
}

.mobile-nav-list li > a:hover,
.mobile-nav-list li > a:focus-visible {
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xs, 4px);
}

/* Dropdown arrow on "Помощь" */
.mobile-nav-list li.menu-item-has-children > a::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid var(--sa-text-inverse, #ffffff);
    margin-left: 8px;
    transition: transform 0.25s ease;
    vertical-align: middle;
}

.mobile-nav-list li.menu-item-has-children.is-open > a::after {
    transform: rotate(180deg);
}

/* Submenu dropdown */
.mobile-nav-list .sub-menu {
    display: none;
    list-style: none;
    margin: 0 0 6px 0;
    padding: 4px 0 4px 14px;
    background: rgba(0, 0, 0, 0.12);
    border-radius: var(--radius-sm, 6px);
}

.mobile-nav-list li.menu-item-has-children.is-open > .sub-menu {
    display: block;
    animation: mobileSubMenuFadeIn 0.2s ease;
}

@keyframes mobileSubMenuFadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-nav-list .sub-menu li,
.mobile-nav-list .sub-menu .nav-menu__item {
    border-bottom: 1px dotted rgba(255, 255, 255, 0.2);
}

.mobile-nav-list .sub-menu li:last-child,
.mobile-nav-list .sub-menu .nav-menu__item:last-child {
    border-bottom: none;
}

.mobile-nav-list .sub-menu a,
.mobile-nav-list .sub-menu .nav-menu__link {
    font-size: 0.9375rem;
    padding: 8px 6px;
    color: rgba(255, 255, 255, 0.92);
}

/* Utility Links section (Underlined) */
.mobile-menu-drawer__utility {
    margin-top: 20px;
    padding-top: 4px;
    width: 100%;
}

.mobile-utility-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 14px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.mobile-utility-list li,
.mobile-utility-list .site-header__utility-item {
    list-style: none;
    margin: 0;
    padding: 0;
    border: none !important;
}

.mobile-utility-list a,
.mobile-utility-list .site-header__utility-link {
    color: var(--sa-text-inverse, #ffffff);
    font-size: 0.875rem;
    line-height: 1.35;
    text-decoration: underline;
    text-underline-offset: 3px;
    opacity: 0.95;
    padding: 2px 0;
    display: inline-block;
    transition: opacity 0.2s ease, text-decoration-color 0.2s ease;
}

.mobile-utility-list a:hover,
.mobile-utility-list a:focus-visible {
    opacity: 1;
    text-decoration-color: var(--sa-orange-primary, #F96E33);
}

/* Footer CTAs (Enhancements) */
.mobile-menu-drawer__footer {
    margin-top: auto;
    padding-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

.mobile-menu-drawer__login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px 16px;
    background-color: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: var(--radius-sm, 8px);
    color: var(--sa-text-inverse, #ffffff);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.mobile-menu-drawer__login-btn:hover,
.mobile-menu-drawer__login-btn:focus-visible {
    background-color: rgba(255, 255, 255, 0.22);
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--sa-text-inverse, #ffffff);
}

.mobile-menu-drawer__cta {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 12px 18px;
    background-color: var(--btn-primary-bg, #F96E33);
    border: none;
    border-radius: var(--btn-radius, 50px);
    color: var(--btn-primary-color, #ffffff) !important;
    font-family: var(--btn-font-family);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--btn-shadow-primary, 0 4px 14px rgba(249, 110, 51, 0.35));
    transition: var(--btn-transition);
}

.mobile-menu-drawer__cta:hover,
.mobile-menu-drawer__cta:focus-visible {
    background-color: var(--btn-primary-hover-bg, #FF7F50);
    color: var(--btn-primary-color, #ffffff) !important;
    transform: var(--btn-hover-transform, translateY(-2px));
    box-shadow: var(--btn-shadow-primary-hover, 0 8px 24px rgba(249, 110, 51, 0.48));
}

.mobile-menu-drawer__cta:active {
    transform: var(--btn-active-transform, translateY(0) scale(0.98));
}