/* PhotographyAI - Case Studies & Mentor Design */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background: linear-gradient(135deg, #4c51bf 0%, #667eea 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.5rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand h1 {
    font-size: 2.2rem;
    font-weight: 800;
    color: #4c51bf;
    margin-bottom: 0.2rem;
}

.brand p {
    color: #718096;
    font-weight: 500;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    text-decoration: none;
    color: #4a5568;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: #4c51bf;
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    color: white;
    text-align: center;
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-description {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
    line-height: 1.7;
}

.photography-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.showcase-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    transition: transform 0.3s ease;
}

.showcase-item:hover {
    transform: translateY(-5px);
}

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

.showcase-item h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.showcase-item p {
    opacity: 0.9;
    line-height: 1.6;
}

/* Case Studies Section */
.case-studies {
    padding: 4rem 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 1rem;
    color: #2d3748;
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #718096;
    margin-bottom: 3rem;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.case-card {
    background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-left: 5px solid #4c51bf;
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(76, 81, 191, 0.15);
}

.case-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.photographer-avatar {
    font-size: 3rem;
    background: linear-gradient(135deg, #4c51bf 0%, #667eea 100%);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.photographer-info h4 {
    font-size: 1.2rem;
    color: #2d3748;
    font-weight: 600;
}

.photographer-info p {
    color: #718096;
    font-size: 0.95rem;
}

.case-content h3 {
    font-size: 1.4rem;
    color: #2d3748;
    margin-bottom: 1rem;
    font-weight: 600;
}

.case-content p {
    color: #4a5568;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.case-results {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.result-item {
    background: linear-gradient(135deg, #4c51bf 0%, #667eea 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

/* AI Mentor Section */
.ai-mentor {
    padding: 4rem 0;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
}

.mentor-card {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 25px;
    padding: 3rem;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.1);
}

.mentor-header {
    text-align: center;
    margin-bottom: 3rem;
}

.mentor-header h2 {
    font-size: 2.2rem;
    color: #2d3748;
    margin-bottom: 1rem;
    font-weight: 700;
}

.mentor-header p {
    color: #718096;
    font-size: 1.1rem;
}

.mentor-interface {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.mentor-avatar {
    position: relative;
    flex-shrink: 0;
}

.avatar-icon {
    font-size: 4rem;
    background: linear-gradient(135deg, #4c51bf 0%, #667eea 100%);
    color: white;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.status-indicator {
    position: absolute;
    bottom: 5px;
    right: 5px;
    width: 20px;
    height: 20px;
    background: #48bb78;
    border-radius: 50%;
    border: 3px solid white;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.mentor-chat {
    flex: 1;
}

.chat-bubble {
    background: linear-gradient(135deg, #edf2f7 0%, #e2e8f0 100%);
    padding: 1.5rem;
    border-radius: 20px;
    border-top-left-radius: 5px;
    margin-bottom: 1.5rem;
    border-left: 4px solid #4c51bf;
}

.chat-bubble p {
    color: #2d3748;
    line-height: 1.7;
    margin: 0;
}

.input-area {
    display: flex;
    gap: 1rem;
}

.photo-input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid #e2e8f0;
    border-radius: 25px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.photo-input:focus {
    border-color: #4c51bf;
    box-shadow: 0 0 0 3px rgba(76, 81, 191, 0.1);
}

.mentor-button {
    padding: 12px 24px;
    background: linear-gradient(135deg, #4c51bf 0%, #667eea 100%);
    color: white;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease;
    white-space: nowrap;
}

.mentor-button:hover {
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: #1a202c;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-main h4,
.footer-links h4 {
    margin-bottom: 1rem;
    color: #4c51bf;
    font-size: 1.2rem;
}

.footer-main p {
    color: #cbd5e0;
    line-height: 1.7;
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 0.5rem;
}

.footer-links ul li a {
    color: #cbd5e0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: #4c51bf;
}

.aptos-verification {
    text-align: center;
    margin-bottom: 2rem;
}

.aptos-verification span {
    display: inline-block;
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    color: #1a202c;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #4a5568;
    color: #a0aec0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .photography-showcase {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .mentor-interface {
        flex-direction: column;
        text-align: center;
    }
    
    .input-area {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .nav {
        display: none;
    }
}