/* style.css */
:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #f59e0b;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gray-color: #64748b;
    --transition: all 0.3s ease;
}

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

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

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

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    border-radius: 2px;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    backdrop-filter: blur(10px);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 5px;
}

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

.logo-icon {
    color: var(--accent-color);
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    position: relative;
}

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

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

.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(37, 99, 235, 0.1);
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.lang-switch:hover {
    background: rgba(37, 99, 235, 0.2);
    transform: translateY(-2px);
}

.lang-switch i {
    color: var(--primary-color);
}

.lang-switch span {
    font-weight: 500;
    color: var(--dark-color);
}

.hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    background: rgba(37, 99, 235, 0.1);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Hero Section */
#hero {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    position: relative;
    background: linear-gradient(rgba(30, 41, 59, 0.9), rgba(30, 41, 59, 0.95)), url('backend.png') center center / cover no-repeat;
    padding: 100px 0;
    overflow: hidden;
}

.hero-bg-shape {
    position: absolute;
    width: 600px;
    height: 600px;
    background: linear-gradient(45deg, rgba(37, 99, 235, 0.1), rgba(245, 158, 11, 0.1));
    border-radius: 50%;
    top: -300px;
    right: -200px;
    z-index: 0;
}

.hero-content {
    max-width: 600px;
    z-index: 1;
    color: white;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content h1 span {
    color: var(--accent-color);
    position: relative;
}

.hero-content h1 span::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), transparent);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: rgba(255, 255, 255, 0.9);
}

.hero-btns {
    display: flex;
    gap: 20px;
}

.hero-stats {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    display: block;
}

.stat-text {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

/* About Section */
#about {
    background-color: white;
}

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

.about-img {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.1);
    position: relative;
}

.about-img::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--accent-color);
    border-radius: 10px;
    z-index: -1;
}

.about-img img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.about-img:hover img {
    transform: scale(1.05);
}

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

.about-content p {
    margin-bottom: 15px;
    color: var(--gray-color);
}

.skills {
    margin-top: 30px;
}

.skill-item {
    margin-bottom: 20px;
}

.skill-name {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.skill-bar {
    height: 8px;
    background-color: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 4px;
    position: relative;
    width: 0;
    transition: width 1.5s ease-in-out;
}

/* Experience Section */
#experience {
    background-color: #f8fafc;
    position: relative;
    overflow: hidden;
}

.experience-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: linear-gradient(45deg, rgba(37, 99, 235, 0.05), rgba(245, 158, 11, 0.05));
    border-radius: 50%;
    transform: translate(50%, -50%);
}

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

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
}

.timeline-item {
    padding: 20px 40px;
    position: relative;
    width: 50%;
    margin-bottom: 30px;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-content {
    padding: 25px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    position: relative;
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 30px;
    right: -15px;
    width: 0;
    height: 0;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
    border-left: 15px solid white;
}

.timeline-item:nth-child(even) .timeline-content::before {
    right: auto;
    left: -15px;
    border-left: none;
    border-right: 15px solid white;
}

.timeline-date {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.timeline-date i {
    font-size: 0.9rem;
}

.timeline-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.timeline-desc {
    color: var(--gray-color);
}

.timeline-dot {
    position: absolute;
    top: 30px;
    right: -10px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--accent-color);
    border: 4px solid var(--primary-color);
    transition: var(--transition);
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.2);
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.5);
}

.timeline-item:nth-child(even) .timeline-dot {
    right: auto;
    left: -10px;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    position: relative;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.project-img {
    height: 200px;
    width: auto;
    overflow: hidden;
    position: relative;
}

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

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

.project-content {
    padding: 20px;
}

.project-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.project-desc {
    color: var(--gray-color);
    margin-bottom: 15px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 15px;
}

.project-tag {
    padding: 5px 10px;
    background-color: #e2e8f0;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: var(--transition);
}

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

.project-links {
    display: flex;
    gap: 15px;
}

.project-links a {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 500;
}

.project-links a:hover {
    color: var(--primary-color);
}

/* Contact Section */
#contact {
    background-color: white;
    position: relative;
}

.contact-bg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 300px;
    height: 300px;
    background: linear-gradient(45deg, rgba(37, 99, 235, 0.05), rgba(245, 158, 11, 0.05));
    border-radius: 50%;
    transform: translate(-50%, 50%);
    z-index: 0;
}

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

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.contact-info p {
    color: var(--gray-color);
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    transition: var(--transition);
    padding: 10px;
    border-radius: 8px;
}

.contact-item:hover {
    background-color: rgba(37, 99, 235, 0.05);
    transform: translateX(5px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(37, 99, 235, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.contact-text a:hover {
    color: var(--primary-color);
}

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

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
    font-family: 'Poppins', sans-serif;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

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

/* Footer */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 40px 0 20px;
    position: relative;
    overflow: hidden;
}

.footer-bg {
    position: absolute;
    top: 50%;
    right: 0;
    width: 300px;
    height: 300px;
    background: linear-gradient(45deg, rgba(37, 99, 235, 0.1), rgba(245, 158, 11, 0.1));
    border-radius: 50%;
    transform: translate(50%, -50%);
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 1;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 20px;
}

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

.footer-links {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    position: relative;
}

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

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

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

.social-links {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

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

.social-link:hover {
    background-color: var(--accent-color);
    transform: translateY(-5px) rotate(360deg);
    box-shadow: 0 5px 15px rgba(245, 158, 11, 0.3);
}

.copyright {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-5px) rotate(360deg);
}

/* Loading Animation for Skills */
@keyframes skillFill {
    from { width: 0; }
    to { width: var(--target-width); }
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .about-container,
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .about-img {
        order: -1;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: white;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: var(--transition);
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        z-index: 999;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .lang-switch {
        margin-top: 20px;
    }
    
    .hamburger {
        display: flex;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 0;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .timeline-dot {
        left: 20px;
    }
    
    .timeline-item:nth-child(even) .timeline-dot {
        left: 20px;
    }
    
    .timeline-content::before {
        right: auto;
        left: -15px;
        border-left: none;
        border-right: 15px solid white;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 15px;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-btns {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
}