/* Topics Page Styles */

/* Topics Header */
.topics-header {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-xl) var(--spacing-xl);
    background: linear-gradient(135deg, rgba(67, 97, 238, 0.1), rgba(114, 9, 183, 0.1));
}

.topics-header h1 {
    font-size: 2.8rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

.topics-header h1::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.topics-header p {
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Topics Container */
.topics-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Topic Box */
.topic-box {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-glass);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.topic-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.topic-title {
    padding: var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(135deg, rgba(67, 97, 238, 0.1), rgba(114, 9, 183, 0.1));
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.topic-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.8;
    line-height: 1;
}

.topic-title h2 {
    margin-bottom: 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

/* Subtopics */
.subtopics {
    display: flex;
    flex-direction: column;
}

.subtopic {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
    transition: all var(--transition-normal);
}

.subtopic:last-child {
    border-bottom: none;
}

.subtopic:hover {
    background-color: rgba(67, 97, 238, 0.05);
    color: var(--primary-color);
}

.subtopic-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.subtopic-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    font-size: 1rem;
}

.subtopic h3 {
    margin-bottom: 0;
    font-size: 1.1rem;
    font-weight: 500;
}

.arrow {
    transition: transform var(--transition-fast);
}

.subtopic:hover .arrow {
    transform: translateX(5px);
    color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .topics-header h1 {
        font-size: 2.2rem;
    }
    
    .topic-title {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .topic-number {
        font-size: 2rem;
    }
    
    .topic-title h2 {
        font-size: 1.3rem;
    }
    
    .subtopic-content {
        flex: 1;
    }
    
    .subtopic h3 {
        font-size: 1rem;
    }
}