:root {
    --background-color: #f9f9f9;
    --card-background: white;
    --text-color: #030303;
    --secondary-text-color: #606060;
    --border-color: #e5e5e5;
    --header-background: white;
    --button-background: #f8f8f8;
    --button-hover: #f0f0f0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.2);
    --logo-color: #ff0000;
    --accent-color: #3ea6ff;
    --card-radius: 12px;
    --button-radius: 20px;
    --input-radius: 20px;
}

.dark-theme {
    --background-color: #0f0f0f;
    --card-background: #212121;
    --text-color: #ffffff;
    --secondary-text-color: #aaaaaa;
    --border-color: #3d3d3d;
    --header-background: #161616;
    --button-background: #272727;
    --button-hover: #3d3d3d;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.4);
    --logo-color: #ff0000;
    --accent-color: #3ea6ff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    transition: background-color 0.3s, color 0.3s, box-shadow 0.3s, transform 0.2s;
    color: var(--text-color); /* Ensure text color respects the theme */
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.5;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 2rem;
    background-color: var(--header-background);
    box-shadow: 0 1px 10px var(--shadow-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo h1 {
    color: var(--logo-color);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.logo a {
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
}

.logo a:hover {
    opacity: 0.9;
}

.theme-toggle {
    margin-left: 1rem;
    cursor: pointer;
    background: var(--button-background);
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 5px var(--shadow-color);
    transition: transform 0.3s, background-color 0.3s;
}

.theme-toggle:hover {
    background-color: var(--button-hover);
    transform: translateY(-2px);
}

.search-container {
    display: flex;
    flex: 0 1 40%;
    max-width: 600px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.search-container input {
    width: 100%;
    padding: 0.7rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--input-radius) 0 0 var(--input-radius);
    font-size: 1rem;
    background-color: var(--card-background);
    color: var(--text-color);
    box-shadow: 0 1px 3px var(--shadow-color);
}

.search-container input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.search-btn {
    background-color: var(--button-background);
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 var(--button-radius) var(--button-radius) 0;
    padding: 0.7rem 1.2rem;
    cursor: pointer;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover {
    background-color: var(--button-hover);
}

.container {
    max-width: 1300px;
    margin: 2rem auto;
    padding: 0 1rem;
}

#video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    position: relative;
    min-height: 300px;
}

.video-card {
    background-color: var(--card-background);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: 0 2px 10px var(--shadow-color);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, opacity 0.5s;
    opacity: 0;
    transform: translateY(20px);
    display: flex;
    flex-direction: column;
}

.live-badge, .short-badge {
    position: absolute;
    bottom: 8px;
    right: 8px;
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: bold;
    color: white;
    text-transform: uppercase;
}

.live-badge {
    background-color: #ff0000;
    animation: pulse 1.5s infinite;
}

.short-badge {
    background-color: #ff4500;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px var(--shadow-hover);
}

.thumbnail {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    overflow: hidden;
}

.thumbnail img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.video-card:hover .thumbnail img {
    transform: scale(1.05);
}

#player-container {
    width: 100%;
    margin-bottom: 2rem;
    background-color: var(--card-background);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: 0 2px 15px var(--shadow-color);
    padding-bottom: 1.5rem;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

#video-player {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    max-width: 100%;
}

#video-player iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.hidden {
    display: none;
}

.back-btn {
    padding: 0.7rem 1.5rem;
    background-color: var(--button-background);
    border: none;
    border-radius: var(--button-radius);
    cursor: pointer;
    margin: 1rem 0 0 1rem;
    color: var(--text-color);
    font-weight: 500;
    box-shadow: 0 2px 5px var(--shadow-color);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.2s, background-color 0.3s, box-shadow 0.3s;
}

.back-btn:hover {
    background-color: var(--button-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.back-btn:active {
    transform: translateY(0);
}

.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--secondary-text-color);
    font-size: 1.1rem;
    animation: fadeIn 0.5s ease;
}

.loading-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--secondary-text-color);
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 1rem;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

footer {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--header-background);
    border-top: 1px solid var(--border-color);
    color: var(--secondary-text-color);
    margin-top: 2rem;
    font-size: 0.9rem;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 1rem;
    }
    
    .logo-container {
        margin-bottom: 1rem;
        width: 100%;
        display: flex;
        justify-content: space-between;
    }
    
    .search-container {
        width: 100%;
        flex: none;
        margin-bottom: 0.5rem;
        max-width: none;
    }
    
    #video-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 1rem;
    }
    
    .container {
        margin: 1rem auto;
    }
    
    .video-info h3 {
        font-size: 0.8rem;
    }
    
    #video-title {
        font-size: 1.2rem;
    }
}