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

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(45deg, #ffd700, #ffed4e);
    --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    --text-primary: #1a1a1a;
    --text-secondary: #7f8c8d;
    --text-light: #ffffff;
    --bg-light: #f8f9fa;
    --shadow-light: 0 10px 40px rgba(0,0,0,0.1);
    --shadow-medium: 0 20px 60px rgba(0,0,0,0.15);
    --border-radius: 15px;
    --border-radius-small: 10px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--primary-gradient);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

.section-title {
    text-align: center;
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-primary);
    position: relative;
}

.section-subtitle {
    text-align: center;
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

/* Header */
header {
    padding: 20px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(0,0,0,0.15);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: #667eea;
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 10px 0;
}

.nav-links a:hover {
    color: #667eea;
    transform: translateY(-2px);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-gradient);
    transition: width 0.3s ease;
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Floating Elements */
.floating-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.floating-element {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: floatAround 20s infinite linear;
}

.floating-element:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-delay: -5s;
}

.floating-element:nth-child(3) {
    width: 60px;
    height: 60px;
    bottom: 30%;
    left: 20%;
    animation-delay: -10s;
}

@keyframes floatAround {
    0% { transform: translateX(0) translateY(0) rotate(0deg); }
    25% { transform: translateX(100px) translateY(-100px) rotate(90deg); }
    50% { transform: translateX(200px) translateY(0) rotate(180deg); }
    75% { transform: translateX(100px) translateY(100px) rotate(270deg); }
    100% { transform: translateX(0) translateY(0) rotate(360deg); }
}

/* Hero Section */
.hero {
    padding: 140px 0 100px;
    text-align: center;
    color: var(--text-light);
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.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 1000 1000"><defs><radialGradient id="a"><stop offset="0" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="1" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="400" cy="700" r="120" fill="url(%23a)"/></svg>') no-repeat center;
    background-size: cover;
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow: 0 4px 8px rgba(0,0,0,0.3);
    background: var(--secondary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { filter: drop-shadow(0 0 20px rgba(255, 215, 0, 0.5)); }
    to { filter: drop-shadow(0 0 30px rgba(255, 215, 0, 0.8)); }
}

.hero .subtitle {
    font-size: 1.5rem;
    margin-bottom: 15px;
    opacity: 0.9;
    font-weight: 500;
}

.hero .description {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.8;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.hero-stats .stat {
    text-align: center;
    padding: 15px 25px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-small);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-stats .stat span {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-light);
}

/* Buttons */
.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background: var(--secondary-gradient);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(255, 215, 0, 0.4);
}

.cta-button .button-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid var(--text-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

.cta-button.loading .button-loader {
    display: inline-block;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Services Section */
.services {
    background: var(--text-light);
    padding: 100px 0;
    position: relative;
    margin-top: 0;
}

.services::before {
    content: '';
    position: absolute;
    top: -50px;
    left: 0;
    right: 0;
    height: 100px;
    background: var(--text-light);
    clip-path: polygon(0 50px, 100% 0, 100% 100%, 0 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.service-card {
    background: var(--text-light);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    border: 1px solid #f0f0f0;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    font-size: 2rem;
    color: var(--text-light);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.service-tech span {
    background: var(--bg-light);
    color: var(--text-primary);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid #e0e0e0;
}

/* Expertise Section */
.expertise {
    background: var(--dark-gradient);
    padding: 100px 0;
    color: var(--text-light);
}

.expertise .section-title,
.expertise .section-subtitle {
    color: var(--text-light);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.expertise-item {
    background: rgba(255,255,255,0.1);
    padding: 30px;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: var(--transition);
}

.expertise-item:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-5px);
}

.expertise-item h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #ffd700;
}

.tech-list {
    list-style: none;
    line-height: 1.8;
}

.tech-list li {
    padding: 5px 0;
    opacity: 0.9;
    position: relative;
    padding-left: 20px;
}

.tech-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: #ffd700;
    font-weight: bold;
}

/* Projects Section */
.projects {
    background: var(--text-light);
    padding: 100px 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.project-card {
    background: var(--text-light);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow-light);
    border: 1px solid #f0f0f0;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.project-card.featured {
    background: var(--primary-gradient);
    color: var(--text-light);
    border: none;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.project-header h3 {
    font-size: 1.4rem;
    color: inherit;
    margin: 0;
}

.project-status {
    background: rgba(255, 215, 0, 0.2);
    color: #b8860b;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.project-card.featured .project-status {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
}

.project-card p {
    line-height: 1.7;
    margin-bottom: 20px;
    opacity: 0.9;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.project-tech span {
    background: var(--bg-light);
    color: var(--text-primary);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid #e0e0e0;
}

.project-card.featured .project-tech span {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* About Section */
.about {
    background: var(--text-light);
    padding: 100px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.about-text h3 {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-weight: 500;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.credentials {
    background: var(--bg-light);
    padding: 25px;
    border-radius: var(--border-radius);
    margin-top: 30px;
}

.credential {
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.credential strong {
    color: var(--text-primary);
}

.experience-timeline {
    background: var(--bg-light);
    padding: 30px;
    border-radius: var(--border-radius);
}

.experience-timeline h4 {
    margin-bottom: 25px;
    color: var(--text-primary);
    font-size: 1.2rem;
}

.timeline-item {
    margin-bottom: 25px;
    padding-left: 20px;
    position: relative;
    border-left: 2px solid #667eea;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 5px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #667eea;
}

.timeline-item .year {
    font-weight: 600;
    color: #667eea;
    font-size: 0.9rem;
}

.timeline-item .role {
    font-weight: 600;
    color: var(--text-primary);
    margin: 5px 0;
}

.timeline-item .description {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    background: var(--primary-gradient);
    padding: 100px 0;
    color: var(--text-light);
}

.contact .section-title,
.contact .section-subtitle {
    color: var(--text-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-top: 60px;
    align-items: start;
}

.contact-info h3 {
    margin-bottom: 30px;
    font-size: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-small);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(5px);
}

.contact-item .icon {
    font-size: 1.2rem;
}

.contact-item a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
}

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

.availability {
    margin-top: 40px;
    padding: 25px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.availability h4 {
    margin-bottom: 15px;
    color: #ffd700;
}

.availability p {
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status.available {
    background: rgba(76, 175, 80, 0.3);
    color: #4caf50;
}

.status.limited {
    background: rgba(255, 193, 7, 0.3);
    color: #ffc107;
}

/* Contact Form */
.contact-form {
    display: grid;
    gap: 20px;
}

.form-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
    padding: 15px 20px;
    border: none;
    border-radius: var(--border-radius-small);
    background: rgba(255,255,255,0.1);
    color: var(--text-light);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
    outline: none;
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.4);
}

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

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

.contact-form select {
    cursor: pointer;
}

.contact-form select option {
    background: var(--text-primary);
    color: var(--text-light);
}

.form-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    flex: 1;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.4);
    border-radius: 4px;
    position: relative;
    transition: var(--transition);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--secondary-gradient);
    border-color: #ffd700;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-primary);
    font-weight: bold;
    font-size: 0.8rem;
}

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

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

.footer-section h4 {
    margin-bottom: 20px;
    color: #667eea;
    font-size: 1.2rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

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

.footer-section li {
    margin-bottom: 8px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: #667eea;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom p {
    margin-bottom: 5px;
}

/* Animations */
[data-animation="fade-in"] {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease;
}

[data-animation="fade-in"].animate {
    opacity: 1;
    transform: translateY(0);
}

[data-animation="slide-up"] {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

[data-animation="slide-up"].animate {
    opacity: 1;
    transform: translateY(0);
}

[data-animation="slide-right"] {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s ease;
}

[data-animation="slide-right"].animate {
    opacity: 1;
    transform: translateX(0);
}

[data-animation="slide-left"] {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s ease;
}

[data-animation="slide-left"].animate {
    opacity: 1;
    transform: translateX(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }
    
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .hero .subtitle {
        font-size: 1.2rem;
    }
    
    .hero .description {
        font-size: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .form-footer {
        flex-direction: column;
        align-items: stretch;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .service-card,
    .expertise-item,
    .project-card {
        padding: 25px;
    }
    
    .about-text h2 {
        font-size: 2rem;
    }
}

/* Print Styles */
@media print {
    .floating-elements,
    .mobile-menu-toggle,
    .contact-form {
        display: none;
    }
    
    .hero::before {
        display: none;
    }
    
    .hero {
        background: none;
        color: var(--text-primary);
    }
}