/* Subtopic Page Styles */
.subtopic-main {
    padding: 2rem 5% 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.breadcrumb {
    margin-bottom: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--primary-light);
}

.breadcrumb a:hover {
    color: var(--accent-color);
}

.subtopic-content {
    background: rgba(30, 41, 59, 0.4);
    border-radius: 15px;
    padding: 3rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
}

.subtopic-content h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    background: linear-gradient(to right, var(--primary-light), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.subtopic-section {
    margin-bottom: 3rem;
}

.subtopic-section h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

.subtopic-section h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.subtopic-section p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.subtopic-section ul {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.subtopic-section ul li {
    list-style-type: disc;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

/* Example cards */
.example-card h3 {
    color: var(--primary-light);
}

/* Application cards */
.application-card h3 {
    color: var(--secondary-color);
}

.application-content {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.application-text {
    flex: 1;
    min-width: 300px;
}

.application-image {
    flex: 1;
    min-width: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-image {
    border-radius: 10px;
    max-height: 250px;
    object-fit: cover;
}

/* Resource cards */
.resource-card {
    background: rgba(30, 41, 59, 0.6);
}

.resource-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: 8px;
}

.resource-placeholder i {
    font-size: 3rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.resource-placeholder p {
    color: var(--text-secondary);
}

.resource-note {
    color: var(--accent-color);
    font-style: italic;
    margin-bottom: 1.5rem;
}

/* Interview question cards */
.question-card {
    background: rgba(30, 41, 59, 0.6);
    margin-bottom: 1.5rem;
    border-radius: 8px;
    padding: 1.5rem;
}

.question {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.question h3 {
    margin: 0;
    flex: 1;
}

.toggle-answer {
    cursor: pointer;
    color: var(--primary-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.toggle-answer:hover {
    color: var(--accent-color);
}

.answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    margin-top: 0;
}

.question-card.expanded .answer {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Navigation buttons */
.navigation-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 3rem;
}

.nav-button {
    display: inline-flex;
    align-items: center;
    background-color: rgba(30, 41, 59, 0.8);
    color: var(--text-primary);
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-button.back {
    padding-right: 2rem;
}

.nav-button.next {
    padding-left: 2rem;
}

.nav-button i {
    transition: transform 0.3s ease;
}

.nav-button.back i {
    margin-right: 10px;
}

.nav-button.next i {
    margin-left: 10px;
}

.nav-button:hover {
    background-color: var(--primary-dark);
    color: white;
}

.nav-button.back:hover i {
    transform: translateX(-5px);
}

.nav-button.next:hover i {
    transform: translateX(5px);
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .subtopic-content {
        padding: 2rem;
    }
    
    .subtopic-content h1 {
        font-size: 2.2rem;
    }
    
    .subtopic-section h2 {
        font-size: 1.6rem;
    }
    
    .subtopic-section h3 {
        font-size: 1.3rem;
    }
}

@media (max-width: 768px) {
    .subtopic-content {
        padding: 1.5rem;
    }
    
    .subtopic-content h1 {
        font-size: 1.8rem;
    }
    
    .question {
        flex-direction: column;
    }
    
    .toggle-answer {
        margin-top: 0.5rem;
    }
    
    .navigation-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-button {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .subtopic-content {
        padding: 1rem;
    }
    
    .breadcrumb {
        font-size: 0.8rem;
    }
    
    .subtopic-content h1 {
        font-size: 1.6rem;
    }
    
    .subtopic-section h2 {
        font-size: 1.4rem;
    }
    
    .subtopic-section h3 {
        font-size: 1.2rem;
    }
}