* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f6f8fb;
    color: #111827;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}


/* ================= HEADER ================= */

.header {
    min-height: 76px;
    background: rgba(255, 255, 255, .97);
    backdrop-filter: blur(15px);

    display: flex;
    align-items: center;

    gap: 28px;
    padding: 0 40px;

    position: sticky;
    top: 0;

    z-index: 4000;

    border-bottom: 1px solid #e5e7eb;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;

    flex-shrink: 0;
}

.menu-button {
    width: 44px;
    height: 44px;

    border: none;
    border-radius: 10px;

    background: #0ea5e9;
    color: white;

    font-size: 21px;

    cursor: pointer;

    transition: .25s;
}

.menu-button:hover {
    background: #0284c7;
    transform: scale(1.04);
}

.logo {
    font-size: 25px;
    font-weight: 800;

    letter-spacing: -1px;
}

.logo span {
    color: #0ea5e9;
}


/* ================= SEARCH ================= */

.search {
    position: relative;

    flex: 1;
    max-width: 700px;

    margin: auto;
}

.search-input-wrapper {
    position: relative;

    width: 100%;
    height: 48px;

    display: flex;
    align-items: center;

    background: #f8fafc;

    border: 1px solid #d1d5db;
    border-radius: 12px;

    z-index: 4002;

    transition: .2s;
}

.search.open .search-input-wrapper {
    background: white;
    border-color: #0ea5e9;

    border-radius: 12px 12px 0 0;
}

.search-icon {
    position: absolute;

    left: 16px;

    color: #64748b;

    font-size: 25px;

    pointer-events: none;
}

.search-input-wrapper input {
    width: 100%;
    height: 100%;

    border: none;
    outline: none;

    background: transparent;

    padding: 0 50px;

    font-size: 16px;
}

.search-input-wrapper input::placeholder {
    color: #94a3b8;
}

.search-clear {
    position: absolute;

    right: 12px;

    width: 28px;
    height: 28px;

    border: none;
    border-radius: 50%;

    background: #e5e7eb;
    color: #64748b;

    font-size: 20px;
    line-height: 28px;

    cursor: pointer;

    display: none;
}

.search.has-text .search-clear {
    display: block;
}

.search-panel {
    position: absolute;

    top: 48px;
    left: 0;

    width: 100%;

    background: white;

    border: 1px solid #d1d5db;
    border-top: none;

    border-radius: 0 0 16px 16px;

    box-shadow:
        0 18px 50px rgba(15,23,42,.18);

    overflow: hidden;

    display: none;

    z-index: 4001;
}

.search.open .search-panel {
    display: block;
}

.search-results {
    max-height: 420px;
    overflow-y: auto;
}

.search-result {
    display: flex;
    align-items: center;

    width: 100%;

    padding: 14px 18px;

    border-bottom: 1px solid #f1f5f9;

    background: white;

    transition: .15s;
}

.search-result:hover {
    background: #f8fafc;
}

.search-result-icon {
    width: 40px;
    height: 40px;

    flex-shrink: 0;

    display: flex;
    align-items: center;
    justify-content: center;

    border-radius: 10px;

    background: #f1f5f9;
}

.search-result-content {
    flex: 1;
    padding-left: 12px;
}

.search-result-title {
    font-size: 16px;
    font-weight: 600;
}

.search-result-type {
    margin-top: 2px;

    font-size: 13px;
    color: #94a3b8;
}

.search-result-arrow {
    font-size: 21px;
    color: #94a3b8;
}

.no-results {
    padding: 30px 20px;

    text-align: center;

    color: #64748b;
}


/* ================= POPULAR SEARCHES ================= */

.popular-searches {
    padding: 20px;

    border-top: 1px solid #e5e7eb;
}

.popular-searches h3 {
    margin-bottom: 14px;

    font-size: 16px;
}

.popular-list {
    display: flex;
    flex-wrap: wrap;

    gap: 8px;
}

.popular-list button {
    padding: 8px 13px;

    border: 1px solid #dbeafe;
    border-radius: 999px;

    background: #f8fbff;
    color: #334155;

    font-size: 13px;

    cursor: pointer;

    transition: .2s;
}

.popular-list button:hover {
    background: #e0f2fe;

    border-color: #7dd3fc;

    color: #0284c7;
}


/* ================= HEADER RIGHT ================= */

.header-right {
    display: flex;
    align-items: center;

    gap: 8px;

    flex-shrink: 0;
}

.header-icon {
    height: 44px;

    display: flex;
    align-items: center;

    gap: 7px;

    padding: 0 13px;

    border: none;
    border-radius: 10px;

    background: #f1f5f9;

    font-family: inherit;

    font-size: 14px;
    font-weight: 600;

    cursor: pointer;

    transition: .25s;
}

.header-icon:hover {
    background: #e0f2fe;

    color: #0284c7;
}


/* ================= PHONE ================= */

.phone-dropdown {
    position: relative;
}

.phone-menu {
    display: none;

    position: absolute;

    right: 0;
    top: calc(100% + 9px);

    width: 260px;

    background: white;

    border-radius: 14px;

    box-shadow:
        0 15px 40px rgba(0,0,0,.15);

    overflow: hidden;

    z-index: 5000;
}

.phone-dropdown:hover .phone-menu {
    display: block;
}

.phone-menu a {
    display: block;

    padding: 16px;

    border-bottom: 1px solid #eee;

    font-weight: 600;
}

.phone-menu a:last-child {
    border-bottom: none;
}

.phone-menu a:hover {
    background: #f0f9ff;

    color: #0284c7;
}


/* ================= SIDE MENU ================= */

.side-menu {
    position: fixed;

    top: 0;
    left: -320px;

    width: 300px;
    height: 100vh;

    background: white;

    z-index: 5000;

    box-shadow:
        10px 0 40px rgba(0,0,0,.15);

    transition: .3s;

    padding: 25px;

    overflow-y: auto;
}

.side-menu.active {
    left: 0;
}

.side-menu-header {
    display: flex;

    justify-content: space-between;
    align-items: center;

    font-size: 22px;

    padding-bottom: 25px;

    border-bottom: 1px solid #e5e7eb;
}

.side-menu-header button {
    border: none;

    background: #f1f5f9;

    width: 38px;
    height: 38px;

    border-radius: 9px;

    cursor: pointer;
}

.side-menu nav {
    display: flex;
    flex-direction: column;

    margin-top: 20px;

    gap: 4px;
}

.side-menu nav a {
    padding: 14px;

    border-radius: 10px;

    font-weight: 600;

    transition: .2s;
}

.side-menu nav a:hover {
    background: #e0f2fe;
    color: #0284c7;
}

.overlay {
    display: none;

    position: fixed;

    inset: 0;

    background: rgba(15,23,42,.45);

    z-index: 4500;
}

.overlay.active {
    display: block;
}


/* ================= CATALOG ================= */

.catalog {
    max-width: 1450px;

    margin: auto;

    padding: 65px 30px 100px;
}

.catalog-heading {
    margin-bottom: 45px;
}

.catalog-heading > span {
    color: #0ea5e9;

    font-size: 13px;

    font-weight: 800;

    letter-spacing: 1px;
}

.catalog-heading h1 {
    font-size: 46px;

    margin: 8px 0 12px;

    line-height: 1.15;
}

.catalog-heading p {
    color: #64748b;

    font-size: 18px;
}


/* ================= PRODUCTS ================= */

.products {
    display: grid;

    grid-template-columns:
        repeat(4, minmax(0, 1fr));

    gap: 22px;
}

.product-card {
    background: white;

    border: 1px solid #e5e7eb;

    border-radius: 16px;

    padding: 18px;

    transition: .25s;
}

.product-card:hover {
    transform: translateY(-5px);

    box-shadow:
        0 18px 40px rgba(15,23,42,.10);

    border-color: #7dd3fc;
}


/* ================= PRODUCT IMAGE ================= */

.product-image {
    width: 100%;
    height: 230px;

    background: #ffffff;

    border: 1px solid #f1f5f9;

    border-radius: 12px;

    margin-bottom: 15px;

    display: flex;

    align-items: center;
    justify-content: center;

    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;

    object-fit: contain;

    padding: 18px;

    display: block;

    transition: transform .25s;
}

.product-card:hover .product-image img {
    transform: scale(1.04);
}


/* ================= PRODUCT INFO ================= */

.stock {
    color: #16a34a;

    font-size: 14px;

    font-weight: 700;

    margin-bottom: 10px;
}

.product-card h2 {
    font-size: 19px;

    line-height: 1.35;

    margin-bottom: 10px;
}

.product-card p {
    color: #64748b;

    font-size: 14px;

    line-height: 1.55;

    min-height: 45px;
}

.price {
    color: #0ea5e9;

    font-size: 21px;

    font-weight: 700;

    margin-top: 20px;

    margin-bottom: 12px;
}

.buy-button {
    width: 100%;

    height: 44px;

    border: none;

    border-radius: 9px;

    background: #0ea5e9;

    color: white;

    font-size: 16px;

    font-weight: 700;

    cursor: pointer;

    transition: .2s;
}

.buy-button:hover {
    background: #0284c7;

    transform: translateY(-1px);
}


/* ================= FOOTER ================= */

footer {
    background: #0f172a;

    color: white;

    padding: 60px 8%;

    display: grid;

    grid-template-columns:
        2fr 1fr 1fr;

    gap: 50px;
}

.footer-logo {
    font-size: 28px;

    font-weight: 800;
}

.footer-logo span {
    color: #0ea5e9;
}

footer h3 {
    margin-bottom: 18px;
}

footer p {
    color: #94a3b8;

    margin-top: 12px;

    max-width: 350px;
}

footer a {
    display: block;

    color: #94a3b8;

    margin-bottom: 10px;

    transition: .2s;
}

footer a:hover {
    color: #38bdf8;
}


/* ================= TABLET ================= */

@media (max-width: 1100px) {

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

    .search {
        max-width: 500px;
    }
}


/* ================= MOBILE ================= */

@media (max-width: 800px) {

    .header {
        flex-wrap: wrap;

        padding: 15px 20px;

        gap: 15px;
    }

    .header-left {
        width: 100%;
    }

    .search {
        order: 3;

        flex-basis: 100%;

        max-width: none;

        margin: 0;
    }

    .header-icon span {
        display: none;
    }

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

    footer {
        grid-template-columns: 1fr;
    }
}


/* ================= SMALL MOBILE ================= */

@media (max-width: 550px) {

    .header {
        padding: 12px 15px;
    }

    .logo {
        font-size: 22px;
    }

    .products {
        grid-template-columns: 1fr;
    }

    .catalog {
        padding: 40px 15px 70px;
    }

    .catalog-heading h1 {
        font-size: 36px;
    }

    .header-icon {
        padding: 10px;
    }

    .search-panel {
        position: fixed;

        top: 76px;

        left: 0;

        width: 100%;

        max-height: calc(100vh - 76px);

        border-radius: 0;

        overflow-y: auto;
    }

    .search-results {
        max-height: none;
    }

    .phone-menu {
        right: -10px;
    }
}