/* Global 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;
}

html {
    scroll-behavior: smooth;
}

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

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

section {
    padding: 80px 0;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
    color: var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--secondary-color);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    margin-right: 15px;
    margin-bottom: 15px;
}

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

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

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

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

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(44, 62, 80, 0.95);
}

.header.scrolled .nav ul li a {
    color: var(--white);
}

.header.scrolled .logo-text {
    color: var(--white);
}

.header.scrolled .logo-subtext {
    color: var(--light-color);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-right: 10px;
}

.logo-subtext {
    font-size: 0.8rem;
    color: var(--text-light);
    display: block;
}

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

.nav ul li {
    margin-left: 30px;
}

.nav ul li a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

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

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

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 150px 0 100px;
    position: relative;
    overflow: hidden;
}

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

.hero-content {
    flex: 1;
    padding-right: 50px;
}

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

.hero h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
    font-weight: 400;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: var(--text-color);
    max-width: 600px;
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* About Section */
.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-image {
    flex: 1;
    text-align: center;
}

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

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.about-stats {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    display: block;
    margin-bottom: 5px;
}

.stat-text {
    font-size: 1rem;
    color: var(--text-light);
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

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

.skill-category:hover {
    transform: translateY(-10px);
}

.skill-category h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
    font-size: 1.5rem;
    text-align: center;
}

.skill-category ul {
    list-style: none;
}

.skill-category ul li {
    margin-bottom: 20px;
}

.skill-name {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
}

.skill-bar {
    width: 100%;
    height: 10px;
    background: #f1f1f1;
    border-radius: 5px;
    overflow: hidden;
}

.skill-level {
    height: 100%;
    background: var(--secondary-color);
    border-radius: 5px;
    width: 0;
    transition: width 1.5s ease;
}

/* Experience Section */
.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    width: 2px;
    background: var(--secondary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}

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

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

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

.timeline-date {
    position: absolute;
    background: var(--secondary-color);
    color: var(--white);
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: 500;
}

.timeline-item:nth-child(odd) .timeline-date {
    right: -100px;
    top: 20px;
}

.timeline-item:nth-child(even) .timeline-date {
    left: -100px;
    top: 20px;
}

.timeline-content {
    padding: 30px;
    background: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    position: relative;
}

.timeline-content::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--white);
    top: 30px;
    transform: rotate(45deg);
    box-shadow: var(--shadow);
}

.timeline-item:nth-child(odd) .timeline-content::after {
    right: -10px;
}

.timeline-item:nth-child(even) .timeline-content::after {
    left: -10px;
}

.timeline-content h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.timeline-content h4 {
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-weight: 400;
}

.timeline-content ul {
    margin-left: 20px;
}

.timeline-content ul li {
    margin-bottom: 10px;
}

/* Certifications Section */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

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

.certification-card:hover {
    transform: translateY(-10px);
}

.certification-logo {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.certification-logo img {
    max-width: 100%;
    max-height: 100%;
}

.certification-card h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

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

.certification-year {
    display: inline-block;
    padding: 5px 15px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 20px;
    font-size: 0.8rem;
}

/* Contact Section */
.contact-content {
    display: flex;
    gap: 50px;
    margin-top: 50px;
}

.contact-info {
    flex: 1;
}

.contact-info h3 {
    margin-bottom: 30px;
    color: var(--primary-color);
}

.contact-info ul {
    list-style: none;
}

.contact-info ul li {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.contact-info ul li i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-right: 15px;
    width: 30px;
    text-align: center;
}

.social-links {
    margin-top: 30px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    margin-right: 15px;
    transition: var(--transition);
}

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

.contact-form {
    flex: 1;
}

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

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 10px rgba(52, 152, 219, 0.2);
}

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

#form-message {
    margin-top: 20px;
    padding: 10px;
    border-radius: 5px;
    display: none;
}

#form-message.success {
    background: #d4edda;
    color: #155724;
    display: block;
}

#form-message.error {
    background: #f8d7da;
    color: #721c24;
    display: block;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-about {
    flex: 2;
    padding-right: 50px;
}

.footer-about h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.footer-about p {
    color: var(--light-color);
}

.footer-links {
    flex: 1;
}

.footer-links h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
}

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

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

.footer-links ul li a {
    color: var(--light-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--light-color);
    font-size: 0.9rem;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 50px;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .timeline::before {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .timeline-item:nth-child(odd) .timeline-date,
    .timeline-item:nth-child(even) .timeline-date {
        left: 15px;
        right: auto;
    }
    
    .timeline-item:nth-child(odd) .timeline-content::after,
    .timeline-item:nth-child(even) .timeline-content::after {
        left: 19px;
        right: auto;
    }
    
    .contact-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .nav ul {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 20px 0;
        box-shadow: var(--shadow);
    }
    
    .nav ul.show {
        display: flex;
    }
    
    .nav ul li {
        margin: 0;
        text-align: center;
        padding: 10px 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-about {
        margin-bottom: 30px;
        padding-right: 0;
    }
}

@media (max-width: 576px) {
    .hero-btns .btn {
        display: block;
        width: 100%;
        margin-right: 0;
        text-align: center;
    }
    
    .about-stats {
        flex-direction: column;
    }
    
    .stat-item {
        margin-bottom: 20px;
    }
}