:root {
    --amazon-dark: #131921;
    --amazon-light-dark: #232f3e;
    --amazon-yellow: #febd69;
    --amazon-yellow-hover: #f3a847;
    --amazon-orange: #ffa41c;
    --amazon-bg: #eaeded;
    --text-color: #0f1111;
    --link-color: #007185;
    --white: #ffffff;
    --gray-500: #565959;
}

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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--amazon-bg);
    color: var(--text-color);
    line-height: 1.5;
}

.container {
    max-width: 1500px;
    margin: 0 auto;
}

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

ul {
    list-style: none;
}

/* Utilities */
.flex {
    display: flex;
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.relative {
    position: relative;
}

/* Header Styles */
header {
    background-color: var(--amazon-dark);
    color: var(--white);
    padding: 5px 15px;
    height: 60px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-logo {
    display: flex;
    align-items: center;
    padding: 8px 10px;
}

.nav-logo:hover,
.nav-item:hover {
    outline: 1px solid var(--white);
}

.nav-item {
    display: flex;
    flex-direction: column;
    padding: 8px 10px;
    cursor: pointer;
}

.nav-text-1 {
    font-size: 12px;
    color: #cccccc;
}

.nav-text-2 {
    font-size: 14px;
    font-weight: 700;
}

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

.nav-search {
    display: flex;
    flex: 1;
    height: 40px;
    background-color: var(--white);
    border-radius: 4px;
    overflow: hidden;
}

.nav-search:focus-within {
    box-shadow: 0 0 0 3px var(--amazon-orange);
}

.search-select {
    background-color: #f3f3f3;
    width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    font-size: 12px;
    border-right: 1px solid #ddd;
    cursor: pointer;
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    padding: 0 10px;
    font-size: 14px;
}

.search-icon {
    width: 45px;
    background-color: var(--amazon-yellow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--amazon-dark);
    cursor: pointer;
}

.search-icon:hover {
    background-color: var(--amazon-yellow-hover);
}

.nav-cart {
    display: flex;
    align-items: flex-end;
    gap: 2px;
}

.cart-count {
    color: var(--amazon-orange);
    font-weight: 700;
    font-size: 16px;
}

/* Sub-navbar Styles */
.sub-navbar {
    background-color: var(--amazon-light-dark);
    color: var(--white);
    height: 39px;
    display: flex;
    align-items: center;
    padding: 0 15px;
    gap: 15px;
    font-size: 14px;
}

.sub-nav-item {
    padding: 8px 10px;
    cursor: pointer;
}

.sub-nav-item:hover {
    outline: 1px solid var(--white);
}

.sub-nav-item.all {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 700;
}

/* Hero Section Styles */
#hero {
    position: relative;
    height: 600px;
    overflow: hidden;
}

.carousel-container {
    display: flex;
    transition: transform 0.5s ease-in-out;
    height: 100%;
}

.carousel-slide {
    min-width: 100%;
    height: 100%;
    position: relative;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1) 70%, rgba(0, 0, 0, 0) 100%);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    font-size: 40px;
    color: var(--text-color);
    cursor: pointer;
    padding: 20px;
    z-index: 10;
}

.carousel-btn:hover {
    outline: 2px solid var(--link-color);
}

.carousel-btn.prev {
    left: 0;
}

.carousel-btn.next {
    right: 0;
}

/* Product Grid Layout */
#product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: -300px;
    /* Overlap with hero mask */
    position: relative;
    z-index: 20;
    padding: 0 20px 50px;
}

.product-card {
    background-color: var(--white);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 400px;
}

.product-card h2 {
    font-size: 21px;
    font-weight: 700;
}

.product-card img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-card .shop-now {
    color: var(--link-color);
    font-size: 13px;
    margin-top: auto;
}

.product-card .shop-now:hover {
    color: #c45500;
    text-decoration: underline;
}

/* Footer Styles */
footer {
    margin-top: 50px;
}

.back-to-top {
    background-color: #37475a;
    color: var(--white);
    text-align: center;
    padding: 15px;
    font-size: 13px;
    cursor: pointer;
}

.back-to-top:hover {
    background-color: #485769;
}

.footer-links {
    background-color: var(--amazon-light-dark);
    color: var(--white);
    padding: 40px 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-column h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 5px;
}

.footer-column a {
    font-size: 14px;
    color: #ddd;
}

.footer-column a:hover {
    text-decoration: underline;
}

.footer-bottom {
    background-color: var(--amazon-dark);
    padding: 30px;
    text-align: center;
    border-top: 1px solid #3a4553;
}