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

:root {
    /* Color Palette */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #3b82f6;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --background-white: #ffffff;
    --background-light: #f8fafc;
    --background-gray: #f1f5f9;
    --border-color: #e2e8f0;
    --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-large: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo a {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition-fast);
}

.nav-logo a:hover {
    color: var(--primary-dark);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-8);
}

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

.nav-link:hover {
    color: var(--primary-color);
}

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

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

/* Language Toggle */
.language-toggle {
    margin-left: var(--spacing-4);
}

.language-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    background: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: var(--transition-fast);
}

.language-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.language-btn i {
    font-size: var(--font-size-sm);
}

.lang-text {
    font-weight: 600;
}

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

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: linear-gradient(135deg, var(--background-white) 0%, var(--background-light) 100%);
    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 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="%23e2e8f0" stroke-width="1" opacity="0.3"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    z-index: 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-12);
    align-items: center;
    padding-top: 70px;
    position: relative;
    z-index: 1;
}

.hero-text {
    max-width: 600px;
}

.greeting {
    display: block;
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
    animation: fadeInUp 0.6s ease-out;
}

.name {
    display: block;
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-6);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-8);
    animation: fadeInUp 0.6s ease-out 0.6s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
    animation: fadeInUp 0.6s ease-out 0.8s both;
    flex-wrap: wrap;
}

/* Hiring Badge */
.hiring-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background-color: #dcfce7;
    color: #166534;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-6);
    animation: fadeInDown 0.6s ease-out 0.3s both;
}

.badge-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: #22c55e;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.hero-social {
    display: flex;
    gap: var(--spacing-4);
    animation: fadeInUp 0.6s ease-out 1s both;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--background-light);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
}

.social-link:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.hero-image {
    animation: fadeInRight 0.6s ease-out 0.4s both;
}

.profile-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.1),
        0 1px 0 rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.profile-card:hover {
    transform: translateY(-10px);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.15),
        0 1px 0 rgba(255, 255, 255, 0.2);
}

.profile-card::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-xl);
    z-index: -1;
    opacity: 0.1;
}

.profile-image {
    width: 250px;
    height: 250px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(var(--primary-rgb), 0.3);
    border: 3px solid rgba(255, 255, 255, 0.1);
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.profile-image:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(var(--primary-rgb), 0.4);
}

.profile-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 4rem;
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    border-radius: var(--radius-full);
    transition: transform 0.3s ease;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    font-family: inherit;
    font-size: var(--font-size-base);
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

.btn-cv {
    background-color: #f59e0b;
    color: white;
    border-color: #f59e0b;
}

.btn-cv:hover {
    background-color: #d97706;
    border-color: #d97706;
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

.btn-full {
    width: 100%;
}

/* Section Common Styles */
section {
    padding: var(--spacing-20) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-full);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

/* About Section */
.about {
    background-color: var(--background-light);
}

.about-text p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-6);
    line-height: 1.7;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-8);
    margin-top: var(--spacing-12);
}

.stat {
    text-align: center;
    padding: var(--spacing-6);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.stat:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-2);
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-12);
    padding-left: var(--spacing-20);
}

.timeline-dot {
    position: absolute;
    left: 22px;
    top: 0;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: var(--radius-full);
    border: 3px solid white;
    box-shadow: var(--shadow-light);
}

.timeline-content {
    background: white;
    padding: var(--spacing-8);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.timeline-content:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.timeline-date {
    color: var(--primary-color);
    font-weight: 600;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-2);
}

.timeline-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
}

.timeline-company {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
    font-weight: 500;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-4);
}

.timeline-achievements {
    list-style: none;
}

.timeline-achievements li {
    position: relative;
    padding-left: var(--spacing-6);
    margin-bottom: var(--spacing-2);
    color: var(--text-secondary);
}

.timeline-achievements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Projects Section */
.projects {
    background-color: var(--background-light);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
}

.project-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    position: relative;
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-large);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.project-icon {
    font-size: 3rem;
    color: white;
}

.project-content {
    padding: var(--spacing-6);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-4);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.tech-tag {
    background-color: var(--background-light);
    color: var(--primary-color);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.project-links {
    display: flex;
    gap: var(--spacing-3);
}

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--background-light);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: var(--transition-fast);
    border: 1px solid var(--border-color);
}

.project-link:hover {
    background-color: var(--primary-color);
    color: white;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(37, 99, 235, 0.95);
    color: white;
    padding: var(--spacing-6);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0;
    transition: var(--transition-normal);
}

/* Education Section */
.education-content {
    max-width: 800px;
    margin: 0 auto;
}

.education-card {
    background: white;
    padding: var(--spacing-8);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    display: flex;
    gap: var(--spacing-6);
    align-items: flex-start;
    transition: var(--transition-normal);
}

.education-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.education-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    flex-shrink: 0;
}

.education-degree {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.education-school {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-2);
    font-weight: 500;
}

.education-year {
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-1);
}

.education-gpa {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
}

.education-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Skills Section */
.skills {
    background-color: var(--background-light);
}

.skills-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
}

.skill-category {
    background: white;
    padding: var(--spacing-8);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.skill-category:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.category-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-6);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.category-title i {
    color: var(--primary-color);
}

.skill-item {
    margin-bottom: var(--spacing-5);
}

.skill-name {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.skill-bar {
    height: 8px;
    background-color: var(--background-gray);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-full);
    width: 0;
    transition: width 1s ease-in-out;
}

/* Certificates Section */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
}

.certificate-card {
    background: white;
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition-normal);
}

.certificate-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.certificate-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin: 0 auto var(--spacing-4);
}

.certificate-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.certificate-issuer {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: var(--spacing-1);
}

.certificate-date {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Contact Section */
.contact {
    background-color: var(--background-light);
}

.availability-notice {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    background-color: #fef3c7;
    color: #92400e;
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-left: 4px solid #f59e0b;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    background: white;
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.contact-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
}

.contact-details p {
    color: var(--text-secondary);
}

.contact-form {
    background: white;
    padding: var(--spacing-8);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: var(--spacing-6);
}

.form-input {
    width: 100%;
    padding: var(--spacing-4);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: var(--transition-fast);
    background-color: var(--background-white);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input::placeholder {
    color: var(--text-light);
}

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

/* Footer */
.footer {
    background-color: var(--text-primary);
    color: white;
    padding: var(--spacing-8) 0;
    text-align: center;
}

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

.footer-social {
    display: flex;
    gap: var(--spacing-4);
}

.footer-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: var(--transition-normal);
}

.footer-social-link:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
}

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --spacing-20: 3rem;
        --spacing-16: 2.5rem;
        --spacing-12: 2rem;
    }
    
    .container {
        padding: 0 var(--spacing-3);
    }
    
    /* Navigation */
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-medium);
        padding: var(--spacing-6) 0;
        gap: var(--spacing-4);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    /* Language toggle mobile */
    .language-toggle {
        margin-left: 0;
        margin-top: var(--spacing-4);
        padding-top: var(--spacing-4);
        border-top: 1px solid var(--border-color);
    }
    
    .language-btn {
        width: 100%;
        justify-content: center;
        padding: var(--spacing-3) var(--spacing-4);
    }

    /* Hero Section */
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-8);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .profile-image {
        width: 200px;
        height: 200px;
        overflow: hidden;
    }
    
    .profile-img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
    }
    
    .profile-placeholder {
        font-size: 3rem;
    }
    
    /* Timeline */
    .timeline::before {
        left: 15px;
    }
    
    .timeline-item {
        padding-left: var(--spacing-12);
    }
    
    .timeline-dot {
        left: 7px;
    }
    
    /* Skills */
    .skills-categories {
        grid-template-columns: 1fr;
    }
    
    /* Contact */
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }
    
    /* Education */
    .education-card {
        flex-direction: column;
        text-align: center;
    }
    
    /* Footer */
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-4);
    }
}

@media (max-width: 480px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Loading animations for skill bars */
.skill-progress.animate {
    animation: skillLoad 2s ease-in-out forwards;
}

@keyframes skillLoad {
    from {
        width: 0;
    }
}

/* Hover effects for better interaction */
.nav-item:hover {
    transform: translateY(-1px);
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.2);
    background-color: var(--accent-color);
}

/* Focus styles for accessibility */
.btn:focus,
.form-input:focus,
.nav-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .navbar,
    .hero-buttons,
    .hero-social,
    .contact-form,
    .footer-social {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: 1rem 0;
        break-inside: avoid;
    }
}