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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: #333;
    background-color: #f8fafc;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo a {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    font-size: 1.75rem;
    letter-spacing: -0.02em;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-logo a:hover {
    color: #1d4ed8;
}

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

.nav-link {
    text-decoration: none;
    color: #4b5563;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #2563eb;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2563eb;
    transition: width 0.3s ease;
}

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

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

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

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

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="0.5" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.highlight {
    background: linear-gradient(45deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Section Styles */
section {
    padding: 5rem 0;
    position: relative;
}

section:nth-child(even) {
    background-color: #ffffff;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    color: #1f2937;
    letter-spacing: -0.02em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 2px;
}

/* About Section */
.about {
    background: #f8fafc;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: #4b5563;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.stat h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.stat p {
    color: #6b7280;
    font-weight: 500;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.15);
}

.skill-category h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #1f2937;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-category h3 i {
    color: #667eea;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-tag i {
    font-size: 1rem;
}

/* Devicon colored icons styling */
.skill-tag .devicon-python-plain.colored,
.skill-tag .devicon-html5-plain.colored,
.skill-tag .devicon-css3-plain.colored,
.skill-tag .devicon-javascript-plain.colored,
.skill-tag .devicon-pytorch-original.colored,
.skill-tag .devicon-numpy-original.colored,
.skill-tag .devicon-pandas-original.colored,
.skill-tag .devicon-git-plain.colored,
.skill-tag .devicon-mysql-plain.colored,
.skill-tag .devicon-java-plain.colored,
.skill-tag .devicon-c-plain.colored,
.skill-tag .devicon-react-original.colored,
.skill-tag .devicon-nodejs-plain.colored,
.skill-tag .devicon-bootstrap-plain.colored,
.skill-tag .devicon-tensorflow-original.colored,
.skill-tag .devicon-mongodb-plain.colored,
.skill-tag .devicon-postgresql-plain.colored,
.skill-tag .devicon-firebase-plain.colored,
.skill-tag .devicon-amazonwebservices-original.colored,
.skill-tag .devicon-googlecloud-plain.colored,
.skill-tag .devicon-docker-plain.colored,
.skill-tag .devicon-vscode-plain.colored,
.skill-tag .devicon-figma-plain.colored {
    filter: brightness(1.2) contrast(1.1);
}

.skill-tag .devicon-github-original,
.skill-tag .devicon-flask-original,
.skill-tag .devicon-express-original,
.skill-tag .devicon-bash-plain {
    color: white !important;
}

.skill-tag:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

/* Skill tag animations */
@keyframes skillTagFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.skill-tag {
    animation: skillTagFadeIn 0.6s ease-out;
    animation-fill-mode: both;
}

.skill-tag:nth-child(1) { animation-delay: 0.1s; }
.skill-tag:nth-child(2) { animation-delay: 0.2s; }
.skill-tag:nth-child(3) { animation-delay: 0.3s; }
.skill-tag:nth-child(4) { animation-delay: 0.4s; }
.skill-tag:nth-child(5) { animation-delay: 0.5s; }
.skill-tag:nth-child(6) { animation-delay: 0.6s; }
.skill-tag:nth-child(7) { animation-delay: 0.7s; }
.skill-tag:nth-child(8) { animation-delay: 0.8s; }

/* Certifications Section */
.certifications {
    background: #f8fafc;
}

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

.cert-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e5e7eb;
    text-align: center;
}

.cert-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.cert-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.cert-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: #1f2937;
}

.cert-issuer {
    color: #2563eb;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.cert-date {
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.cert-id {
    font-size: 0.8rem;
    color: #6b7280;
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 1rem;
    background: #f8fafc;
    padding: 0.5rem;
    border-radius: 6px;
}

.cert-desc {
    color: #6b7280;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.cert-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: #2563eb;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: auto;
}

.cert-link:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    color: white;
    text-decoration: none;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: #ffffff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid #e5e7eb;
    position: relative;
}

.project-image {
    background: linear-gradient(45deg, #667eea, #764ba2);
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.project-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
}

.project-image i {
    font-size: 3.5rem;
    color: white;
    position: relative;
    z-index: 2;
}

/* Enhanced Project Content */
.project-content {
    padding: 2rem;
    position: relative;
}

.project-content h3 {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1f2937;
    line-height: 1.4;
}

.project-content p {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: 0.95rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-tech span {
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    color: #1f2937;
    padding: 0.375rem 0.875rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid #e5e7eb;
    transition: all 0.3s ease;
}

.project-tech span:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-1px);
}

/* Enhanced Project Links */
.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: #2563eb;
    font-weight: 600;
    padding: 0.75rem 1.25rem;
    border: 2px solid #2563eb;
    border-radius: 12px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.project-link:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.contact .section-title {
    color: white;
}

.contact .section-title::after {
    background: rgba(255, 255, 255, 0.3);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.contact-info h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.contact-info p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.contact-details {
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-item i {
    font-size: 1.25rem;
    color: #fbbf24;
    min-width: 24px;
}

.contact-item span {
    font-weight: 500;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-link-container {
    position: relative;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
    color: white;
}

.social-link i {
    font-size: 1.25rem;
}

/* Contact Form */
.contact-form {
    background: rgba(255, 255, 255, 0.1);
    padding: 2.5rem;
    border-radius: 20px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: white;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #fbbf24;
    background: rgba(255, 255, 255, 0.2);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.btn-submit {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: #1f2937;
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(251, 191, 36, 0.4);
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.project-link.disabled {
    color: #9ca3af;
    cursor: not-allowed;
    border-color: #d1d5db;
}

.project-link.disabled:hover {
    color: #9ca3af;
    transform: none;
    background: transparent;
    border-color: #d1d5db;
}

/* Badges Tooltip */
.badges-tooltip {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    margin-top: 0.5rem;
}

.social-link-container:hover .badges-tooltip {
    opacity: 1;
    visibility: visible;
}

.badges-tooltip::before {
    content: '';
    position: absolute;
    top: -5px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid rgba(0, 0, 0, 0.9);
}

.badge {
    display: inline-block;
    width: 24px;
    height: 24px;
    margin: 0 2px;
    border-radius: 4px;
    transition: transform 0.3s ease;
}

.badge:hover {
    transform: scale(1.1);
}

/* Certificate Modal */
.certificate-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.certificate-modal-content {
    background-color: #ffffff;
    margin: 5% auto;
    border-radius: 16px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

.certificate-modal-header {
    padding: 2rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.certificate-modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
}

.close {
    color: #6b7280;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: #1f2937;
}

.certificate-modal-body {
    padding: 2rem;
}

.certificate-image {
    width: 100%;
    max-height: 500px;
    object-fit: contain;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.certificate-details {
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 1rem;
}

.certificate-details h4 {
    margin-bottom: 1rem;
    color: #1f2937;
    font-size: 1.25rem;
}

.certificate-details p {
    margin-bottom: 0.5rem;
    color: #4b5563;
}

.certificate-details strong {
    color: #1f2937;
}

/* Hero Button Styles */
.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    justify-content: center;
}

.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.btn-primary {
    background: #fbbf24;
    color: #1f2937;
}

.btn-primary:hover {
    background: #f59e0b;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(251, 191, 36, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Notification Styles */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 3000;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
}

.notification.success {
    background: #059669;
}

.notification.error {
    background: #dc2626;
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

/* Platforms Section */
.platforms {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.platforms .section-title {
    color: white;
    margin-bottom: 50px;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.platform-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    text-decoration: none;
    color: white;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.platform-link:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    text-decoration: none;
}

.platform-link i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: white;
}

.platform-link span {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Responsive Platforms */
@media (max-width: 768px) {
    .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .platform-link {
        padding: 20px 15px;
    }
    
    .platform-link i {
        font-size: 2rem;
    }
    
    .skill-category h3 {
        font-size: 1.1rem;
    }
    
    .skill-tag {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* Hero responsive */
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-content {
        padding: 0 1rem;
        text-align: center;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }
}

/* Development Badge */
.development-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
    }
    50% {
        box-shadow: 0 4px 15px rgba(255, 107, 107, 0.5);
    }
    100% {
        box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
    }
}