/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
}

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

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease-out;
}

.highlight {
    color: #ffd700;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease-out 0.2s;
    animation-fill-mode: backwards;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.4s;
    animation-fill-mode: backwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.6s;
    animation-fill-mode: backwards;
}

.btn {
    padding: 0.8rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
    display: inline-block;
}

.btn-primary {
    background-color: white;
    color: #667eea;
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

/* About Section */
.about {
    padding: 4rem 2rem;
    background-color: white;
}

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

.about h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
    color: #667eea;
}

.about p {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.skill-item {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    color: white;
    transition: transform 0.3s;
}

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

.skill-item h3 {
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

/* Projects Section */
.projects-section {
    padding: 4rem 2rem;
    min-height: calc(100vh - 200px);
}

.page-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 0.5rem;
    color: #667eea;
}

.page-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 3rem;
}

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

.project-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.project-image {
    height: 200px;
    overflow: hidden;
}

.placeholder-img {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    margin-bottom: 0.5rem;
    color: #333;
}

.project-info p {
    color: #666;
    margin-bottom: 1rem;
}

.view-more {
    color: #667eea;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    overflow: auto;
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 10px;
    max-width: 800px;
    position: relative;
    animation: slideIn 0.3s ease-out;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: #000;
}

.modal-project-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #667eea;
}

.modal-project-image {
    width: 100%;
    height: 300px;
    margin-bottom: 1.5rem;
}

.modal-project-description {
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.modal-project-tech {
    margin-bottom: 1rem;
}

.tech-tag {
    display: inline-block;
    background-color: #667eea;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

/* Feed Section */
.feed-section {
    padding: 4rem 2rem;
    min-height: calc(100vh - 200px);
}

.feed-container {
    max-width: 600px;
    margin: 0 auto;
}

.feed {
    margin-top: 2rem;
}

.post {
    background: white;
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    animation: fadeIn 0.5s ease-out;
}

.post-header {
    margin-bottom: 1rem;
}

.post-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.author-info h4 {
    margin-bottom: 0.2rem;
    color: #333;
}

.post-time {
    font-size: 0.85rem;
    color: #999;
}

.post-content p {
    margin-bottom: 1rem;
    line-height: 1.6;
}

.post-image {
    margin: 1rem 0;
    border-radius: 8px;
    overflow: hidden;
}

.placeholder-img-post {
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
}

.post-actions {
    display: flex;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

.action-btn {
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background-color 0.3s;
    font-size: 0.95rem;
}

.action-btn:hover {
    background-color: #f5f5f5;
}

.like-icon {
    color: #e91e63;
}

.action-btn.liked .like-icon {
    color: #e91e63;
}

/* Footer */
footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 250px;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skills {
        grid-template-columns: 1fr;
    }
}