/* General Layout */
body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 10px;
    background-color: #f0f4f8;
    color: #333;
    overflow: hidden; 
}

.header-container { text-align: center; margin-bottom: 15px; }
h2 { color: #004a99; font-size: 1.8em; margin: 5px 0; }
.underline { height: 4px; width: 80px; background-color: #ff6600; margin: 0 auto; border-radius: 2px; }

/* Compact Navigation Menu */
.vertical-nav {
    display: flex;
    flex-direction: column;
    align-items: center; 
    justify-content: center;
    gap: 15px;
    max-width: 850px;
    margin: 0 auto;
    padding: 25px 40px;
    background: #ffffff;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.cta-text {
    font-size: 0.9em;
    color: #666;
    margin-bottom: 5px;
    font-style: italic;
    text-align: center;
}

.play-btn {
    background-color: #004a99;
    color: white;
    border: none;
    padding: 12px 0;
    width: 340px; 
    border-radius: 30px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1.1em;
    transition: all 0.2s ease;
}

.play-btn:hover { background-color: #003366; transform: scale(1.02); }

/* Modal Overlay Styling */
.video-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.video-card {
    background: #ffffff;
    padding: 25px;
    border-radius: 15px;
    width: 90%;
    max-width: 850px;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    background: #ff6600;
    color: white;
    border: none;
    font-size: 28px;
    font-weight: bold;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
}

video { width: 100%; border-radius: 10px; margin-top: 15px; background: #000; }
.description-box { margin-top: 20px; padding: 15px; border-left: 5px solid #004a99; text-align: justify; font-size: 0.95em; line-height: 1.6; }