/* Global Styles */
:root {
    --primary-color: #3a5a78;
    --secondary-color: #e6b17e;
    --text-color: #333;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f5f5f5;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header Styles */
header {
    background: linear-gradient(to right, var(--primary-color), #2c3e50);
    color: white;
    padding: 3rem 0;
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1rem;
}

header .date {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--dark-color);
    padding: 0.5rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 1.1rem;
}

/* Intro Section */
.intro {
    text-align: center;
    margin-bottom: 2rem;
}

.intro h2 {
    font-family: 'Playfair Display', serif;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 2rem;
}

/* Discourse Cards */
.discourses {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.discourse-card {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.discourse-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.speaker-info {
    padding: 1.5rem;
    flex-grow: 1;
}

.speaker-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
}

.speakers {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.moderator {
    font-style: italic;
    color: #666;
    font-size: 0.9rem;
}

.discourse-actions {
    padding: 1rem 1.5rem;
    background-color: #f8f9fa;
    border-top: 1px solid #eee;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 0.9rem;
}

.video-btn {
    background-color: var(--primary-color);
    color: white;
}

.video-btn:hover {
    background-color: #2c4a68;
}

.download-btn {
    background-color: var(--secondary-color);
    color: var(--dark-color);
}

.download-btn:hover {
    background-color: #d9a06e;
}

.btn i {
    margin-right: 0.5rem;
}

/* Footer Styles */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.8);
}

.modal-content {
    position: relative;
    background-color: #fefefe;
    margin: 5% auto;
    padding: 0;
    width: 90%;
    max-width: 900px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 20px;
    color: white;
    font-size: 28px;
    font-weight: bold;
    z-index: 10;
    cursor: pointer;
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--secondary-color);
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Responsive Styles */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    header h2 {
        font-size: 1.2rem;
    }
    
    .discourses {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
}

@media (max-width: 480px) {
    header {
        padding: 2rem 0;
    }
    
    header h1 {
        font-size: 1.75rem;
    }
    
    header h2 {
        font-size: 1rem;
    }
    
    .intro h2 {
        font-size: 1.5rem;
    }
    
    .discourse-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}