/* Base Styles */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #333;
    --text-light: #7f8c8d;
    --white: #fff;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Roboto Slab', serif;
    font-weight: 600;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    text-align: center;
    position: relative;
}

.section-title span {
    color: var(--secondary-color);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 50px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background-color: transparent;
    color: var(--secondary-color);
    border: 2px solid var(--secondary-color);
    margin-left: 15px;
}

.btn-secondary:hover {
    background-color: var(--secondary-color);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.logo span {
    color: var(--secondary-color);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li a {
    color: var(--dark-color);
    text-decoration: none;
    margin-left: 30px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links li a:hover {
    color: var(--secondary-color);
}

.nav-links li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    bottom: -5px;
    left: 0;
    transition: var(--transition);
}

.nav-links li a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger .line {
    width: 25px;
    height: 3px;
    background-color: var(--dark-color);
    margin: 5px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(236, 240, 241, 0.9) 0%, rgba(236, 240, 241, 0.7) 100%);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 50px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.hero-content h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
    font-weight: 400;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: var(--text-light);
}

.hero-buttons {
    display: flex;
}

.hero-image img {
    max-width: 100%;
    height: auto;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.project-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-links {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-links {
    opacity: 1;
}

.link-btn, .github-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 10px;
    color: var(--white);
    font-size: 1.2rem;
    transition: var(--transition);
}

.link-btn {
    background: var(--secondary-color);
}

.github-btn {
    background: var(--dark-color);
}

.link-btn:hover, .github-btn:hover {
    transform: translateY(-5px);
}

.project-info {
    padding: 20px;
}

.project-info h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.project-info p {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.project-tags span {
    background: #f1f1f1;
    color: var(--text-light);
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* About Section */
.about .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-content p {
    margin-bottom: 30px;
}

.skills-section {
    margin-bottom: 40px;
}

.skills-section h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 20px;
}

.skill-item {
    background: var(--white);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.skill-icon {
    width: 60px;
    height: 60px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 15px;
    font-size: 1.5rem;
}

.skill-item h4 {
    font-size: 1rem;
    color: var(--primary-color);
}

.education-section h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background: var(--secondary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -38px;
    top: 5px;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--white);
    border: 3px solid var(--secondary-color);
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--secondary-color);
    margin-bottom: 5px;
}

.timeline-content h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.timeline-content p {
    font-size: 0.9rem;
    color: var(--text-light);
}

.about-image {
    text-align: center;
    position: relative;
}

.profile-img {
    width: 100%;
    max-width: 400px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.social-links {
    display: flex;
    justify-content: center;
    margin-top: 30px;
    gap: 20px;
}

.social-links a {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--secondary-color);
    color: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    transform: translateY(-5px);
    background: var(--primary-color);
}

/* Contact Section */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.contact-details p {
    color: var(--text-light);
}

.contact-form .form-group {
    margin-bottom: 20px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: 'Poppins', sans-serif;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.contact-form textarea {
    resize: vertical;
    min-height: 150px;
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.footer-about p {
    opacity: 0.8;
    line-height: 1.8;
}

.footer-links h3,
.footer-social h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--white);
    opacity: 0.8;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1rem;
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Page Specific Styles */
.page-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.page-title span {
    color: var(--secondary-color);
}

/* Project Page Styles */
.project-detail {
    padding: 100px 0 60px;
}

.project-header {
    text-align: center;
    margin-bottom: 50px;
}

.project-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.project-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 20px;
}

.project-meta {
    display: flex;
    justify-content: center;
    gap: 20px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.project-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.project-image-main {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.project-image-main img {
    width: 100%;
    height: auto;
    display: block;
}

.project-description h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin: 30px 0 20px;
}

.project-description p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.tech-list {
    list-style: none;
    margin-bottom: 30px;
}

.tech-list li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: center;
}

.tech-list li::before {
    content: '\f00c';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--secondary-color);
    margin-right: 10px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.feature-item {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-10px);
}

.feature-item i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.project-links {
    display: flex;
    gap: 20px;
    margin-top: 40px;
}

/* About Page Styles */
.about-page {
    padding: 100px 0 60px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.about-text h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin: 30px 0 20px;
}

.about-text p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.expertise-item {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.expertise-item:hover {
    transform: translateY(-10px);
}

.expertise-item i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.expertise-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.education-item {
    margin-bottom: 30px;
}

.education-item h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
}

.institution {
    font-weight: 500;
    color: var(--secondary-color);
}

.date {
    color: var(--text-light);
    font-size: 0.9rem;
}

.certifications {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-top: 40px;
}

.certifications h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.certifications ul {
    list-style: none;
}

.certifications li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.certifications li::before {
    content: '\f019';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--secondary-color);
    margin-right: 10px;
}

/* Contact Page Styles */
.contact-page {
    padding: 100px 0 60px;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

.info-item i {
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
}

.social-links h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin: 40px 0 20px;
}

.contact-form h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.contact-form .form-group {
    margin-bottom: 20px;
}

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero .container,
    .about .container,
    .contact-container,
    .project-content,
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .hero-content,
    .about-content,
    .contact-info {
        order: -1;
    }
    
    .hero-image,
    .about-image {
        text-align: center;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .about-image {
        margin-top: 50px;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        height: 70px;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-links li {
        margin: 15px 0;
    }
    
    .nav-links li a {
        margin-left: 0;
        font-size: 1.5rem;
    }
    
    .hamburger {
        display: block;
    }
    
    .hamburger.active .line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active .line:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .line:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content h2 {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn-secondary {
        margin-left: 0;
    }
    
    .skills-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .project-links {
        flex-direction: column;
    }
}