:root {
    --primary-color: #ff6c00;
    --secondary-color: #ff6c00;
    --accent-color: #ffffff;
    --background-color: #1e1e1e;
    --card-background: #2a2a2a;
    --text-color: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --header-height: 80px;
    --gradient-start: #ff6c00;
    --gradient-middle: #ff7a1f;
    --gradient-end: #ff8c3d;
    --card-hover-color: rgba(255, 108, 0, 0.15);
    --button-hover: #ff7a1f;
    --border-color: #383838;
    --input-background: #333333;
    --tab-inactive: #333333;
    --tab-hover: #444444;
}

.dark-theme {
    --primary-color: #ff6c00;
    --secondary-color: #ff6c00;
    --accent-color: #ffffff;
    --background-color: #1e1e1e;
    --card-background: #2a2a2a;
    --text-color: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --card-hover-color: rgba(255, 108, 0, 0.15);
    --button-hover: #ff8c3d;
    --border-color: #383838;
    --input-background: #333333;
    --tab-inactive: #333333;
    --tab-hover: #444444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

body {
    font-family: 'Roboto', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 25px 30px;
}

/* Header styles */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    background-color: #252525;
    border-radius: 5px;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo svg {
    margin-right: 18px;
    transition: transform 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.logo:hover svg {
    transform: scale(1.05);
}

.title-container {
    display: flex;
    flex-direction: column;
}

.logo h1 {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 2px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 14px;
    color: #aaa;
    opacity: 0.9;
    font-weight: 400;
    letter-spacing: 0.3px;
}

.search-box {
    display: flex;
    align-items: center;
    background-color: var(--input-background);
    border-radius: 4px;
    padding: 5px 12px;
    width: 320px;
    border: 1px solid #444444;
    transition: all 0.3s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.search-box:hover, .search-box:focus-within {
    border-color: var(--primary-color);
}

.search-box input {
    flex: 1;
    border: none;
    background: none;
    padding: 8px;
    outline: none;
    color: var(--text-color);
    font-family: 'Roboto', sans-serif;
    font-size: 15px;
}

.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.search-box button {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 18px;
    padding: 0 8px;
    transition: transform 0.2s;
}

.search-box button:hover {
    transform: scale(1.15);
    color: var(--secondary-color);
}

/* Category tabs styles */
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 25px;
    background-color: #252525;
    padding: 12px 15px;
    border-radius: 5px;
}

.tab {
    padding: 8px 15px;
    background-color: var(--tab-inactive);
    border: 1px solid #444444;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-color);
    transition: all 0.3s ease;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tab:hover {
    background-color: var(--tab-hover);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.tab.active {
    background: var(--primary-color);
    color: white;
    border-color: transparent;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* Website card styles */
main {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.site-card {
    background-color: var(--card-background);
    border-radius: 5px;
    padding: 0;
    box-shadow: 0 3px 10px var(--shadow-color);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    border: 1px solid #444444;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.site-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
    border-color: var(--primary-color);
}

.site-icon {
    font-size: 36px;
    color: var(--primary-color);
    width: 100%;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    transition: all 0.3s ease;
    background-color: #333333;
    margin-bottom: 0;
}

.site-card:hover .site-icon {
    color: var(--primary-color);
}

.site-info {
    position: relative;
    z-index: 1;
    width: 100%;
    padding: 12px;
}

.site-info h3 {
    font-size: 16px;
    margin-bottom: 5px;
    font-weight: 500;
    transition: color 0.3s;
    color: #fff;
}

.site-card:hover .site-info h3 {
    color: var(--primary-color);
}

.site-info p {
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.7;
    margin-bottom: 10px;
    height: 44px;
    overflow: hidden;
}

.site-card a {
    display: inline-block;
    padding: 10px 24px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.site-card a:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

/* Footer styles */
footer {
    margin-top: 50px;
    padding-top: 25px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-color);
    opacity: 0.7;
    background-color: #252525;
    padding: 15px 20px;
    border-radius: 5px;
}

.theme-toggle button {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 20px;
    transition: transform 0.3s ease;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    background-color: #333333;
    border: 1px solid #444444;
}

.theme-toggle button:hover {
    color: var(--secondary-color);
    border-color: var(--primary-color);
}

/* Responsive design */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 25px;
    }
    
    .search-box {
        width: 100%;
    }
    
    main {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
    
    footer {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 20px 15px;
    }
    
    .category-tabs {
        justify-content: center;
    }
    
    main {
        grid-template-columns: 1fr;
    }
    
    .logo {
        flex-direction: column;
        text-align: center;
    }
    
    .logo svg {
        margin-right: 0;
        margin-bottom: 15px;
    }
}