/* ============================================
   Header Styles - Ozon-inspired
   ============================================ */

.header {
    background-color: white;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    position: sticky;
    top: 0;
    z-index: var(--z-index-sticky);
    transition: all 250ms ease;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.98);
}

.header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
    border-bottom-color: transparent;
}

.header__top {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    height: var(--header-height);
}

/* ===== Logo ===== */
.header__logo {
    flex-shrink: 0;
    margin-right: var(--spacing-3);
}

.header__logo a {
    display: flex;
    align-items: center;
    font-family: var(--font-family-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.04em;
    transition: all 200ms ease;
}

.header__logo a:hover {
    color: var(--color-primary-dark);
    transform: translateY(-1px);
}

.header__logo svg {
    height: 42px;
    width: auto;
}

/* ===== Catalog Button (Ozon-style) ===== */
.header__catalog-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: 13px 28px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-lg);
    font-family: var(--font-family-base);
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: -0.01em;
    transition: all 250ms ease;
    flex-shrink: 0;
    /* Liquid Glass Effect */
    backdrop-filter: blur(10px) saturate(150%);
    -webkit-backdrop-filter: blur(10px) saturate(150%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow:
        0 2px 12px rgba(0, 91, 255, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    cursor: pointer;
}

.header__catalog-btn:hover {
    box-shadow:
        0 6px 20px rgba(0, 91, 255, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.3);
}

.header__catalog-btn:active {
    transform: translateY(0);
}

.catalog-btn__icon {
    width: 18px;
    height: 18px;
    color: white;
}

/* ===== Search Bar ===== */
.header__search {
    flex: 1;
    max-width: 800px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    position: relative;
}

.header__search form {
    display: flex;
    align-items: center;
    flex: 1;
    background-color: #F3F4F6;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1.5px solid rgba(0, 0, 0, 0.08);
    transition: all 250ms ease;
}

.header__search:focus-within form {
    background-color: white;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(0, 91, 255, 0.08);
    transform: translateY(-1px);
}

.search__input {
    flex: 1;
    padding: 13px 20px;
    border: none;
    background: transparent;
    font-family: var(--font-family-base);
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
}

.search__input::placeholder {
    color: var(--color-text-light);
}

.search__input:focus {
    outline: none;
}

.search__btn {
    padding: 13px 20px;
    background-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 200ms ease;
    cursor: pointer;
    border: none;
}

.search__btn:hover {
    background-color: var(--color-primary-light);
}

.search__btn svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

/* ===== Search Dropdown ===== */
.search__dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border: 1px solid rgba(0, 0, 0, 0.06);
    z-index: 1000;
    overflow: hidden;
}

.search__dropdown--visible {
    display: block;
}

.search__result {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    text-decoration: none;
    color: var(--color-text-primary);
    transition: background 150ms;
}

.search__result:hover {
    background: #F3F4F6;
}

.search__result-img {
    width: 48px;
    height: 32px;
    border-radius: 4px;
    object-fit: cover;
    flex-shrink: 0;
}

.search__result-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.search__result-title {
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search__result-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.search__result-price {
    font-weight: 600;
    color: var(--color-primary);
}

.search__view-all {
    display: block;
    padding: 10px 16px;
    text-align: center;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-primary);
    text-decoration: none;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    transition: background 150ms;
}

.search__view-all:hover {
    background: #F3F4F6;
}

.search__no-results {
    padding: 16px;
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* ===== User Actions ===== */
.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    flex-shrink: 0;
}

.header__user,
.header__notifications,
.header__favorites,
.header__cart {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-primary);
    transition: all 200ms ease;
    padding: 10px 14px;
    border-radius: var(--radius-lg);
    font-weight: 500;
    border: 1px solid transparent;
}

.header__user:hover,
.header__notifications:hover,
.header__favorites:hover,
.header__cart:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.header__user svg,
.header__notifications svg,
.header__favorites svg,
.header__cart svg {
    width: 20px;
    height: 20px;
}

.header__user span {
    font-family: var(--font-family-base);
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.header__notifications,
.header__favorites,
.header__cart {
    position: relative;
}

.notifications__badge,
.favorites__badge,
.cart__badge {
    position: absolute;
    top: 6px;
    right: 8px;
    background: linear-gradient(135deg, var(--color-secondary) 0%, #E55A2B 100%);
    color: white;
    min-width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6875rem;
    font-weight: 700;
    padding: 0 6px;
    box-shadow: 0 2px 8px rgba(255, 107, 53, 0.4);
    border: 2px solid white;
}

.notifications__badge:empty,
.favorites__badge:empty,
.cart__badge:empty {
    display: none;
}

/* ===== Mobile Auth Button ===== */
.header__mobile-auth {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.header__mobile-auth:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.header__mobile-auth svg {
    width: 22px;
    height: 22px;
}

.header__mobile-auth img {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

/* ===== Mobile Menu Toggle ===== */
.header__mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    width: 30px;
    height: 30px;
    justify-content: center;
    padding: 0;
}

.header__mobile-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.header__mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.header__mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.header__mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ===== Mobile Navigation ===== */
.mobile-nav {
    display: none;
    position: fixed;
    top: var(--header-height-mobile);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-index-dropdown);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.mobile-nav.active {
    display: block;
    opacity: 1;
    pointer-events: all;
}

.mobile-nav__menu {
    background-color: white;
    padding: var(--spacing-3);
    box-shadow: var(--shadow-lg);
    animation: slideDown var(--transition-normal);
    max-height: calc(100vh - var(--header-height-mobile));
    overflow-y: auto;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-nav__menu ul {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.mobile-nav__menu li {
    border-bottom: 1px solid var(--color-border);
}

.mobile-nav__menu li:last-child {
    border-bottom: none;
}

.mobile-nav__menu a {
    display: block;
    padding: var(--spacing-2);
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.mobile-nav__menu a:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    padding-left: var(--spacing-3);
}

/* ===== Header Bottom Row (Categories Navigation) ===== */
.header__bottom {
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    background-color: white;
    padding: 0;
}

.header__bottom .container {
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
}

.header__bottom .container::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

/* ===== Main Navigation (Row 2) ===== */
.main-nav {
    width: 100%;
}

.main-nav__list {
    display: flex;
    align-items: center;
    gap: 0;
    white-space: nowrap;
}

.main-nav__item {
    flex-shrink: 0;
}

.main-nav__item a {
    display: block;
    padding: 14px 24px;
    color: var(--color-text-primary);
    font-family: var(--font-family-base);
    font-weight: 500;
    font-size: 0.9375rem;
    letter-spacing: -0.01em;
    transition: all 200ms ease;
    position: relative;
    border-bottom: 2px solid transparent;
}

.main-nav__item a:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    border-bottom-color: var(--color-primary);
}