.opportunity-card {
    max-width: 800px;
    margin: 2rem auto;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    background: #ffffff;
    color: #444444;
    font-family: 'Arial', sans-serif;
}

.opportunity-header {
    position: relative;
    height: 300px;
}

.cover-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.95);
}

.header-overlay {
    position: absolute;
    bottom: 0;
    padding: 2rem;
    width: 100%;
    background: linear-gradient(transparent, rgba(255, 255, 255, 0.9));
}

.title {
    font-size: 1.8rem;
    margin: 0;
    color: #2c3e50;
    line-height: 1.3;
}

.meta-badge {
    margin-top: 1rem;
    background: rgba(236, 240, 241, 0.9);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    display: inline-block;
    backdrop-filter: blur(2px);
}

.content-section {
    padding: 2rem;
}

.description {
    line-height: 1.8;
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #666666;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 2rem;
    align-items: center;
}

.info-item {
    background: #f8f9fa;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #3498db;
}

.deadline {
    color: #e74c3c;
    font-weight: bold;
}

.register-btn {
    background: #3498db;
    color: white;
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.register-btn:hover {
    background: #2980b9;
    transform: translateY(-1px);
}