/* Reset and Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: #0f0f0f;
    color: #ffffff;
    line-height: 1.6;
}

/* Header Styling */
.header {
    background-color: #181818;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 20px;
}

/* Logo Styling */
.logo {
    display: flex;
    align-items: center;
}

.logo a {
    color: #ffffff;
    text-decoration: none;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
}

.logo img {
    max-height: 40px;
    margin-right: 10px;
}

.logo-text {
    display: block;
}

.logo-highlight {
    color: #FF0000; /* YouTube red */
}

/* Search Form Styling */
.search-container {
    flex: 1;
    display: flex;
    justify-content: center;
}

.search-form {
    display: flex;
    width: 100%;
    max-width: 600px;
}

.search-form input[type="text"] {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #303030;
    background-color: #121212;
    color: #ffffff;
    font-size: 16px;
    border-radius: 2px 0 0 2px;
}

.search-form input[type="text"]::placeholder {
    color: #aaaaaa;
}

.search-form button {
    padding: 0 15px;
    border: 1px solid #303030;
    background-color: #303030;
    color: #ffffff;
    cursor: pointer;
    border-radius: 0 2px 2px 0;
    transition: background-color 0.3s ease;
}

.search-form button:hover {
    background-color: #505050;
}

/* Navigation Links */
.nav-links {
    display: flex;
    align-items: center;
}

.nav-links a {
    color: #ffffff;
    text-decoration: none;
    margin-left: 20px;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #FF0000;
}

/* Dark Mode Toggle Button */
.dark-mode-toggle {
    color: #ffffff;
    background-color: transparent;
    border: none;
    cursor: pointer;
    font-size: 20px;
    margin-left: 20px;
    transition: color 0.3s ease;
}

.dark-mode-toggle:hover {
    color: #FF0000;
}

/* Mobile Styles */
@media (max-width: 768px) {
    /* Adjust Header Layout */
    .header-container {
        flex-direction: column;
        align-items: center;
    }

    /* Logo Adjustments */
    .logo-text {
        display: none; /* Hide logo text on mobile */
    }

    /* Search Bar on Top */
    .search-container {
        order: -1; /* Move search bar to top */
        width: 100%;
        margin-bottom: 10px;
    }

    /* Center Logo Image */
    .logo {
        justify-content: center;
        width: 100%;
    }

    /* Navigation Links at Bottom */
    .nav-links {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background-color: #181818;
        justify-content: space-around;
        padding: 10px 0;
        z-index: 1000;
    }

    .nav-links a,
    .dark-mode-toggle {
        margin-left: 0;
        margin-right: 0;
    }

    /* Adjust Body Padding */
    body {
        padding-bottom: 60px; /* Height of nav-links to prevent content overlap */
    }
}

/* Videos Container */
.videos-container {
    width: 90%;
    max-width: 1200px;
    margin: 20px auto 30px; /* Adjusted top margin to account for fixed header */
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 15px;
}

/* Video Item */
.video-item {
    background-color: #181818;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
}

/* Thumbnail Container */
.thumbnail-container {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
}

.thumbnail-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Duration Overlay */
.duration-overlay {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background-color: rgba(0, 0, 0, 0.8);
    color: #ffffff;
    padding: 2px 6px;
    border-radius: 2px;
    font-size: 12px;
}

/* Video Details */
.video-details {
    padding: 15px;
}

.video-title {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 8px;
    height: 44px;
    overflow: hidden;
}

.video-title a {
    color: #ffffff;
    text-decoration: none;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-title a:hover {
    color: #FF0000;
}

.channel-info {
    display: flex;
    align-items: center;
    font-size: 14px;
    color: #aaaaaa;
}

.channel-info a {
    color: #aaaaaa;
    text-decoration: none;
    margin-right: 10px;
}

.channel-info a:hover {
    color: #ffffff;
}

.video-stats {
    font-size: 12px;
    color: #888888;
}

/* Footer Styling */
.footer {
    background-color: #181818;
    padding: 20px 0;
    text-align: center;
    color: #aaaaaa;
}

.footer-links a {
    color: #aaaaaa;
    text-decoration: none;
    margin: 0 10px;
    font-size: 14px;
}

.footer-links a:hover {
    color: #ffffff;
}

/* Light Mode Styles */
body.light-mode {
    background-color: #ffffff;
    color: #000000;
}

body.light-mode .header {
    background-color: #f0f0f0;
}

body.light-mode .search-form input[type="text"] {
    background-color: #ffffff;
    color: #000000;
}

body.light-mode .search-form button {
    background-color: #dddddd;
}

body.light-mode .nav-links {
    background-color: #f0f0f0;
}

body.light-mode .nav-links a {
    color: #000000;
}

body.light-mode .dark-mode-toggle {
    color: #000000;
}

body.light-mode .video-item {
    background-color: #f9f9f9;
}

body.light-mode .video-title a {
    color: #000000;
}

body.light-mode .video-title a:hover {
    color: #FF0000;
}

body.light-mode .channel-info a {
    color: #555555;
}

body.light-mode .footer {
    background-color: #f0f0f0;
    color: #555555;
}

body.light-mode .footer-links a {
    color: #555555;
}