/* Instructor Page Specific Styles */

/* Instructor Hero Section */
.instructor-hero {
    padding: 120px 20px 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.instructor-hero-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3rem;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.instructor-profile-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    overflow: hidden;
    border: 5px solid white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.profile-placeholder {
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
}

.instructor-profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.instructor-intro h1 {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    opacity: 0.95;
}

.instructor-name {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.instructor-title {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.instructor-social {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-btn {
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid white;
    border-radius: 8px;
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.social-btn:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Bio Section */
.bio-section {
    padding: 80px 20px;
    background: white;
}

.bio-content {
    max-width: 800px;
    margin: 0 auto;
}

.bio-content h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.bio-content .lead {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.bio-content p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Credentials Section */
.credentials-section {
    padding: 80px 20px;
    background: var(--bg-light);
}

.credentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.credential-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all 0.3s ease;
}

.credential-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.credential-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.credential-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.institution {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.year {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Experience Timeline */
.experience-section {
    padding: 80px 20px;
    background: white;
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-2);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-marker {
    position: absolute;
    left: -46px;
    top: 0;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 3px solid white;
    box-shadow: 0 0 0 3px var(--primary-color);
}

.timeline-content {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.timeline-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.company {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.timeline-content ul {
    list-style: none;
    padding-left: 0;
}

.timeline-content li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.timeline-content li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* Expertise Section */
.expertise-section {
    padding: 80px 20px;
    background: var(--bg-light);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.expertise-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.expertise-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tag {
    padding: 0.5rem 1rem;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.tag:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Research & Publications */
.research-section {
    padding: 80px 20px;
    background: white;
}

.publications-list {
    max-width: 900px;
    margin: 0 auto;
}

.publication-item {
    display: flex;
    gap: 2rem;
    padding: 2rem;
    margin-bottom: 2rem;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.publication-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(5px);
}

.pub-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.3;
    min-width: 50px;
}

.pub-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.pub-meta {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.pub-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.pub-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.pub-link:hover {
    color: var(--primary-dark);
}

/* Teaching Philosophy */
.philosophy-section {
    padding: 80px 20px;
    background: var(--bg-light);
}

.philosophy-content {
    max-width: 900px;
    margin: 0 auto;
}

.philosophy-quote {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    margin-bottom: 3rem;
    border-left: 5px solid var(--primary-color);
    box-shadow: var(--shadow-md);
}

.philosophy-quote blockquote {
    font-size: 1.5rem;
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
}

.philosophy-text h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.philosophy-points {
    display: grid;
    gap: 2rem;
}

.point {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.point-icon {
    font-size: 2.5rem;
}

.point h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.point p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Achievements Section */
.achievements-section {
    padding: 80px 20px;
    background: white;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.achievement-card {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.achievement-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.achievement-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.achievement-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.achievement-card p {
    color: var(--text-secondary);
}

/* Instructor CTA */
.instructor-cta {
    padding: 80px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.instructor-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.instructor-cta p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Responsive Design for Instructor Page */
@media (max-width: 768px) {
    .instructor-hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .instructor-profile-image {
        margin: 0 auto;
        width: 150px;
        height: 150px;
    }

    .instructor-name {
        font-size: 2rem;
    }

    .instructor-social {
        justify-content: center;
    }

    .social-btn {
        font-size: 0.875rem;
        padding: 0.6rem 1.2rem;
    }

    .bio-content h2 {
        font-size: 2rem;
    }

    .bio-content .lead {
        font-size: 1.25rem;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline-marker {
        left: -36px;
    }

    .publication-item {
        flex-direction: column;
        gap: 1rem;
    }

    .pub-number {
        font-size: 1.5rem;
    }

    .philosophy-quote blockquote {
        font-size: 1.25rem;
    }

    .philosophy-quote {
        padding: 2rem;
    }

    .instructor-cta h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .instructor-profile-image {
        width: 120px;
        height: 120px;
    }

    .profile-placeholder {
        font-size: 3.5rem;
    }

    .instructor-name {
        font-size: 1.75rem;
    }

    .instructor-title {
        font-size: 1rem;
    }

    .social-btn {
        width: 100%;
    }

    .timeline-content {
        padding: 1.5rem;
    }

    .point {
        flex-direction: column;
        text-align: center;
    }

    .point-icon {
        font-size: 2rem;
    }
}