:root {
    --primary-color: #A00000;
    --secondary-color: #333333; 
    --background-light: #F9F9F9; 
    --text-light: #666666; 
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Roboto', sans-serif;
}

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

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--secondary-color);
    background-color: #FFFFFF; 
}

a:hover {
    text-decoration: none;
    color: white;
}


.ad-header {
    background-color: var(--background-light);
    text-align: center;
    padding: 10px 0;
    font-size: 0.85rem;
    color: var(--text-light);
    border-bottom: 1px solid #EAEAEA;
    text-transform: uppercase;
    letter-spacing: 1px;
}


.content-container {
    max-width: 900px; 
    margin: 40px auto;
    padding: 0 20px;
    background-color: #FFFFFF;
}


.article-header {
    margin-bottom: 30px;
}

.research-tag {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 5px 15px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 15px;
    border-radius: 3px; 
}

.stats {
    font-size: 0.85rem;
    color: var(--text-light);
}

.stats span {
    margin-right: 5px;
}

.time-icon::before {
    content: '🕑'; 
    margin-right: 3px;
}


.article-title {
    font-family: var(--font-serif);
    font-size: 2.5rem; 
    line-height: 1.2;
    margin-bottom: 30px;
    font-weight: 700;
    color: #000000;
}

.article-title strong {
    color: var(--primary-color); 
}

.article-paragraph {
    font-size: 1.15rem;
    /* margin-bottom: 25px; */
    text-align: justify;
}

.article-paragraph strong {
    font-weight: 700;
}

.article-paragraph.highlight {
    background-color: #FFF0F0;
    padding: 20px;
    border-left: 5px solid var(--primary-color);
    font-weight: 700;
    /* font-style: italic; */
    /* color: var(--secondary-color); */
    margin-top: 35px;
    margin-bottom: 40px;
    border-radius: 4px;
}

.article-paragraph.highlight.hover-effect a:hover {
    color: #000080;
}

.article-paragraph.highlight.hover-effect a:active {
    color: #00004D;
}


.video-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    margin-top: 40px;
}

.video-placeholder {
    position: relative;
    width: 100%;
    max-width: 1000px; 
    height: 0;
    padding-bottom: 56.25%; 
    background-color: #333;
    cursor: pointer;
    margin-bottom: 30px;
    border-radius: 8px; 
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1); 
}

.video-thumbnail {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.7; 
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.play-button::after {
    content: '';
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 15px 0 15px 25px;
    border-color: transparent transparent transparent var(--primary-color);
    margin-left: 5px;
}

.video-caption {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 5px 10px;
    font-size: 0.9rem;
    border-radius: 3px;
    font-weight: 700;
}

.video-cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    font-size: 1.3rem;
    font-weight: 700;
    padding: 15px 40px;
    text-align: center;
    text-decoration: none;
    border-radius: 50px; 
    transition: background-color 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.video-cta-button:hover {
    background-color: #C00000; 
}


.disclaimer-area {
    background-color: var(--background-light);
    padding: 30px 20px;
    margin-top: 50px;
    border-top: 1px solid #EAEAEA;
    text-align: center;
}

.disclaimer-area .disclaimer-box {
    max-width: 1200px;
    margin: 0 auto 20px;
    padding: 20px;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--text-light);
    text-align: left;
}

.disclaimer-area .small-text {
    max-width: 1150px;
    margin: 15px auto;
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--text-light);
    text-align: left;
}

.footer-links {
    margin-top: 30px;
    padding-top: 10px;
    border-top: 1px solid #DDDDDD;
}

.footer-links a {
    color: var(--secondary-color);
    text-decoration: none;
    font-size: 0.85rem;
    margin: 0 10px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* responsivo */
@media (max-width: 768px) {
    .content-container {
        margin: 20px auto;
    }

    .article-title {
        font-size: 1.8rem;
    }

    .article-paragraph {
        font-size: 1rem;
    }

    .video-cta-button {
        font-size: 1.1rem;
        padding: 12px 30px;
        max-width: 90%;
    }
}