:root {
    --background-color-light: #f4f4f4;
    --text-color-light: #333;
    --card-background-light: #fff;
    --header-background-light: #fff;
    --footer-background-light: #333;
    --footer-text-color-light: #fff;

    --background-color-dark: #222;
    --text-color-dark: #f4f4f4;
    --card-background-dark: #333;
    --header-background-dark: #333;
    --footer-background-dark: #222;
    --footer-text-color-dark: #f4f4f4;

    --background-color: var(--background-color-light);
    --text-color: var(--text-color-light);
    --card-background: var(--card-background-light);
    --header-background: var(--header-background-light);
    --footer-background: var(--footer-background-light);
    --footer-text-color: var(--footer-text-color-light);
}

body.dark-mode {
    --background-color: var(--background-color-dark);
    --text-color: var(--text-color-dark);
    --card-background: var(--card-background-dark);
    --header-background: var(--header-background-dark);
    --footer-background: var(--footer-background-dark);
    --footer-text-color: var(--footer-text-color-dark);
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: sans-serif;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: var(--header-background);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    text-decoration: none;
    color: var(--text-color);
}

nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

nav ul li {
    display: inline-block;
    margin-left: 20px;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 16px;
}

.theme-switcher {
    position: relative;
}

#theme-toggle {
    display: none;
}

#theme-toggle + label {
    display: flex;
    align-items: center;
    cursor: pointer;
}

#theme-toggle + label .sun,
#theme-toggle + label .moon {
    font-size: 24px;
}

#theme-toggle + label .moon {
    display: none;
}

body.dark-mode #theme-toggle + label .sun {
    display: none;
}

body.dark-mode #theme-toggle + label .moon {
    display: block;
}


main {
    padding-top: 100px;
}

.products {
    padding: 40px 0;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.product-card {
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    overflow: hidden;
    text-align: center;
}

.product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-card h3 {
    margin: 20px 0 10px;
}

.product-card p {
    color: #777;
    margin-bottom: 20px;
}

.product-card .price {
    font-weight: bold;
    font-size: 18px;
    margin-bottom: 20px;
}

.product-card button {
    background-color: #333;
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-bottom: 20px;
}

.product-card button:hover {
    background-color: #555;
}

footer {
    background-color: var(--footer-background);
    color: var(--footer-text-color);
    padding: 20px 0;
    text-align: center;
}