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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: #2c3e50;
    text-decoration: none;
}

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

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

.nav-links a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: #3498db;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: linear-gradient(45deg, #3498db, #2ecc71);
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #2c3e50;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    flex: 1;
    padding: 0 20px;
    animation: fadeInUp 1s ease-out;
    position: relative;
    z-index: 2;
}

.hero-content h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    opacity: 0.9;
    text-align: left;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    border-right: 3px solid rgba(255,255,255,0.8);
    width: 0;
    animation: typing 2.8s steps(20, end) forwards,
               blink 0.7s infinite;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

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

.btn-primary, .btn-secondary {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(45deg, #3498db, #2ecc71);
    color: white;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

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

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

.hero-image {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-image img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.hero-shape {
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

/* Bubble Animation */
.bubbles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.bubble {
    position: absolute;
    bottom: -100px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: bubble 15s infinite ease-in;
}

.bubble:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
    animation-duration: 12s;
}

.bubble:nth-child(2) {
    left: 20%;
    animation-delay: 2s;
    animation-duration: 14s;
    width: 60px;
    height: 60px;
}

.bubble:nth-child(3) {
    left: 30%;
    animation-delay: 4s;
    animation-duration: 16s;
}

.bubble:nth-child(4) {
    left: 40%;
    animation-delay: 6s;
    animation-duration: 18s;
    width: 50px;
    height: 50px;
}

.bubble:nth-child(5) {
    left: 50%;
    animation-delay: 8s;
    animation-duration: 20s;
}

.bubble:nth-child(6) {
    left: 60%;
    animation-delay: 10s;
    animation-duration: 15s;
    width: 70px;
    height: 70px;
}

.bubble:nth-child(7) {
    left: 70%;
    animation-delay: 12s;
    animation-duration: 17s;
}

.bubble:nth-child(8) {
    left: 80%;
    animation-delay: 14s;
    animation-duration: 19s;
    width: 45px;
    height: 45px;
}

.bubble:nth-child(9) {
    left: 90%;
    animation-delay: 16s;
    animation-duration: 13s;
}

.bubble:nth-child(10) {
    left: 95%;
    animation-delay: 18s;
    animation-duration: 21s;
    width: 55px;
    height: 55px;
}

@keyframes bubble {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) rotate(360deg);
        opacity: 0;
    }
}

/* Sections */
section {
    padding: 80px 0;
}

section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
    color: #2c3e50;
    position: relative;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: linear-gradient(45deg, #3498db, #2ecc71);
}

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

.about-text {
    flex: 2;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #555;
}

.education {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border-left: 5px solid #3498db;
}

.education h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}

.about-stats {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stat {
    text-align: center;
    padding: 20px;
    background: linear-gradient(45deg, #3498db, #2ecc71);
    color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.stat h4 {
    font-size: 2rem;
    margin-bottom: 5px;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.skill-category {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.skill-category h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.skill-category li {
    padding: 5px 0;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.skill-category li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: #3498db;
}

/* Experience Section */
.experience-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    border-left: 5px solid #3498db;
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.experience-header h3 {
    color: #2c3e50;
    margin: 0;
}

.company {
    color: #3498db;
    font-weight: 600;
}

.duration {
    color: #7f8c8d;
    font-style: italic;
}

.experience-item ul {
    list-style: none;
}

.experience-item li {
    padding: 5px 0;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.experience-item li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #2ecc71;
}

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

.project-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }
.project-card:nth-child(4) { animation-delay: 0.4s; }
.project-card:nth-child(5) { animation-delay: 0.5s; }
.project-card:nth-child(6) { animation-delay: 0.6s; }
.project-card:nth-child(7) { animation-delay: 0.7s; }
.project-card:nth-child(8) { animation-delay: 0.8s; }
.project-card:nth-child(9) { animation-delay: 0.9s; }
.project-card:nth-child(10) { animation-delay: 1.0s; }
.project-card:nth-child(11) { animation-delay: 1.1s; }
.project-card:nth-child(12) { animation-delay: 1.2s; }

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.project-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}

.project-card p {
    color: #555;
    margin-bottom: 20px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-stack span {
    background: linear-gradient(45deg, #3498db, #2ecc71);
    color: white;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.projects-button {
    text-align: center;
    margin-top: 40px;
}

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

.certification {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.certification i {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 20px;
}

.certification h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}

.certification p {
    color: #555;
    margin-bottom: 15px;
}

.certification a {
    display: inline-block;
    background: #3498db;
    color: white;
    padding: 8px 16px;
    border-radius: 5px;
    text-decoration: none;
    transition: background 0.3s ease;
}

.certification a:hover {
    background: #2980b9;
}

/* Highlights Section */
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.highlight {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.highlight i {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 20px;
}

.highlight h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}

.highlight a {
    display: inline-block;
    background: #3498db;
    color: white;
    padding: 8px 16px;
    border-radius: 5px;
    text-decoration: none;
    transition: background 0.3s ease;
}

.highlight a:hover {
    background: #2980b9;
}

/* Contact Section */
.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.contact-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.contact-item i {
    font-size: 2rem;
    color: #3498db;
    margin-bottom: 15px;
}

.contact-item p {
    color: #555;
}

.contact-item a {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
}

.contact-item a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px 0;
}

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

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

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink {
    50% { border-color: transparent; }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        flex-direction: column;
        text-align: center;
        padding: 120px 0 80px;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .about-content {
        flex-direction: column;
    }

    .about-stats {
        flex-direction: row;
        justify-content: space-around;
    }

    .experience-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary, .btn-secondary {
        width: 200px;
    }

    .about-stats {
        flex-direction: column;
    }

    .stat {
        padding: 15px;
    }
}