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

body {
    font-family: 'Roboto', Arial, sans-serif;
    background-color: #0f0f0f;
    color: #f1f1f1;
    overflow-x: hidden;
    line-height: 1.4;
}

button {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

input {
    font-family: inherit;
}

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

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #0f0f0f;
}

::-webkit-scrollbar-thumb {
    background: #606060;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #909090;
}

/* Main Content Layout */
.main-content {
    margin-left: 240px;
    margin-top: 56px;
    padding: 24px;
    transition: margin-left 0.3s ease;
    min-height: calc(100vh - 56px);
}

.main-content.collapsed {
    margin-left: 0;
}

/* Hide/Show Pages */
.video-page {
    display: none;
    margin-left: 0;
    margin-top: 56px;
    padding: 24px;
}

.video-page.active {
    display: flex;
    gap: 24px;
}

/* Hide sidebar when video page is active */
.video-page.active ~ .sidebar {
    display: none;
}

/* When video page is active, hide home page and sidebar */
body:has(.video-page.active) .sidebar {
    display: none;
}

body:has(.video-page.active) .main-content {
    margin-left: 0;
}

/* Responsive Design */
@media (max-width: 1312px) {
    .main-content {
        margin-left: 0;
    }
    
    .sidebar {
        transform: translateX(-240px);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
}

@media (max-width: 768px) {
    .main-content,
    .video-page {
        padding: 16px;
    }
    
    .video-page.active {
        flex-direction: column;
    }
    
    .header-center {
        margin: 0 16px;
    }
}

@media (max-width: 480px) {
    .main-content,
    .video-page {
        padding: 12px;
    }
    
    .header-center {
        display: none;
    }
}