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

:root {
    /* Light Theme Colors */
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --highlight-color: #e94560;
    --text-primary: #333;
    --text-secondary: #666;
    --text-light: #999;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;
    --border-radius: 12px;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xl: 3.5rem;
    --font-size-lg: 2.5rem;
    --font-size-md: 1.5rem;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.7;
}

/* Dark Theme */
[data-theme="dark"] {
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-light: #999999;
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #0f3460;
    --border-color: #333;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.4);
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    transition: all 0.3s ease;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 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: all 0.3s ease;
}

[data-theme="dark"] .navbar {
    background: rgba(26, 26, 46, 0.95);
}

.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 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--highlight-color);
}

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

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

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

.theme-toggle {
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background: var(--bg-secondary);
}

.theme-toggle i {
    font-size: 1.2rem;
    color: var(--text-primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="%23e94560" opacity="0.1"/></svg>');
    animation: float 20s infinite linear;
}

@keyframes float {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(-100px) rotate(360deg); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
    position: relative;
    z-index: 2;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    line-height: var(--line-height-tight);
    margin-bottom: 1rem;
    animation: slideInUp 1s ease-out;
}

.highlight {
    color: var(--highlight-color);
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--highlight-color);
    opacity: 0.3;
}

.hero-subtitle {
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    animation: slideInUp 1s ease-out 0.2s both;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: 2rem;
    animation: slideInUp 1s ease-out 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    animation: slideInUp 1s ease-out 0.6s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: var(--font-size-base);
}

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

.btn-primary:hover {
    background: #d63851;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

.btn-secondary:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.hero-image {
    display: flex;
    justify-content: center;
    animation: slideInRight 1s ease-out 0.8s both;
}

.hero-image .profile-image {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--highlight-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.hero-image .profile-image:hover {
    transform: scale(1.05);
}

.image-placeholder {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--highlight-color));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.image-placeholder i {
    font-size: 8rem;
    color: white;
    opacity: 0.8;
}

.hero-social {
    display: flex;
    gap: 1rem;
    animation: slideInUp 1s ease-out 1s both;
}

.hero-social a {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.hero-social a:hover {
    background: var(--highlight-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

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

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

/* Section Styles */
section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--highlight-color);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    background: var(--bg-secondary);
}

.about-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    font-size: 1.1rem;
    line-height: var(--line-height-relaxed);
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

.personal-info {
    margin-top: 3rem;
}

.info-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    justify-content: center;
}

.linkedin-row {
    justify-content: center;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    flex: 1;
    max-width: 300px;
}

.linkedin-item {
    max-width: 400px;
}

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

.info-item i {
    font-size: 1.5rem;
    color: var(--highlight-color);
    width: 24px;
}

.linkedin-icon {
    color: #0077b5 !important;
}

.info-item span {
    color: var(--text-secondary);
}

.info-item a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.info-item a:hover {
    color: #0077b5;
}

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

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

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 50%;
    padding-right: 2rem;
    text-align: right;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 50%;
    padding-left: 2rem;
}

.timeline-content {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    position: relative;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 50%;
    width: 15px;
    height: 15px;
    background: var(--highlight-color);
    border-radius: 50%;
    transform: translateY(-50%);
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -2.5rem;
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -2.5rem;
}

.timeline-year {
    display: inline-block;
    background: var(--highlight-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: 1rem;
}

.timeline-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.timeline-content h4 {
    font-size: 1.1rem;
    color: var(--highlight-color);
    margin-bottom: 1rem;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

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

.experience-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.card-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-date {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.experience-card h4 {
    font-size: 1.1rem;
    color: var(--highlight-color);
    margin-bottom: 0.5rem;
}

.card-location {
    color: var(--text-light);
    font-size: var(--font-size-sm);
    margin-bottom: 1rem;
}

.card-description {
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

/* Skills Section */
.skills {
    background: var(--bg-secondary);
}

.skills-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

.technical-skills h3,
.soft-skills h3,
.languages h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-primary);
    text-align: center;
}

.skills-grid {
    display: grid;
    gap: 2rem;
}

.skill-item {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.skill-item:hover {
    transform: translateY(-3px);
}

.skill-icon {
    text-align: center;
    margin-bottom: 1rem;
}

.skill-icon i {
    font-size: 2.5rem;
    color: var(--highlight-color);
}

.skill-item h4 {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.skill-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--highlight-color), #ff6b8a);
    border-radius: 4px;
    transition: width 1s ease-in-out;
    width: 0;
}

.soft-skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.soft-skill {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s ease;
}

.soft-skill:hover {
    transform: translateY(-3px);
}

.soft-skill i {
    font-size: 2rem;
    color: var(--highlight-color);
    margin-bottom: 1rem;
}

.soft-skill span {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
}

.language-grid {
    display: grid;
    gap: 1rem;
}

.language-item {
    background: var(--bg-card);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.language-name {
    font-weight: 500;
    color: var(--text-primary);
}

.language-level {
    background: var(--highlight-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: var(--font-size-sm);
}

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

.certificate-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

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

.certificate-icon {
    margin-bottom: 1.5rem;
}

.certificate-icon i {
    font-size: 3rem;
    color: var(--highlight-color);
}

.certificate-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.certificate-issuer {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.certificate-year {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
    display: inline-block;
}

/* Projects Placeholder */
.projects-placeholder {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.placeholder-content i {
    font-size: 4rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.placeholder-content h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.placeholder-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Blog Preview Section */
.blog-preview {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.blog-preview::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"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></svg>') repeat;
    animation: float 20s infinite linear;
}

.blog-preview .section-header {
    color: white;
    margin-bottom: 4rem;
}

.blog-preview .section-title {
    color: white;
}

.blog-preview .section-title::after {
    background: white;
}

.blog-preview .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 3rem;
}

.blog-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 30px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.blog-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    background: rgba(255, 255, 255, 0.15);
}

.blog-card:hover::before {
    opacity: 1;
}

.blog-category {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: 1rem;
    backdrop-filter: blur(5px);
}

.blog-card h3 {
    margin-bottom: 1rem;
    line-height: var(--line-height-tight);
}

.blog-card h3 a {
    color: white;
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

.blog-card h3 a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.blog-excerpt {
    color: rgba(255, 255, 255, 0.9);
    line-height: var(--line-height-relaxed);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.blog-date {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
}

.btn-read-more {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    font-size: var(--font-size-sm);
}

.btn-read-more:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.blog-view-all {
    text-align: center;
    position: relative;
    z-index: 2;
}

.blog-view-all .btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    font-weight: 600;
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.blog-view-all .btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* Contact Section */
.contact {
    background: var(--bg-secondary);
}

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

.contact-info {
    display: grid;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--highlight-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.contact-icon.linkedin-icon {
    background: #0077b5;
}

.contact-item:hover .contact-icon {
    transform: scale(1.1);
}

.contact-icon i {
    color: white;
    font-size: 1.2rem;
}

.contact-details h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

.contact-details a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-details a:hover {
    color: #0077b5;
}

.contact-form {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: var(--font-size-base);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--highlight-color);
}

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

/* References */
.references-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.reference-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

.reference-card:hover {
    transform: translateY(-3px);
}

.reference-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.reference-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--highlight-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #d63851;
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --font-size-xl: 2.5rem;
        --font-size-lg: 2rem;
        --font-size-md: 1.3rem;
        --section-padding: 60px 0;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 2rem;
        transition: left 0.3s ease;
        box-shadow: var(--shadow);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-content {
        order: 2;
    }

    .hero-image {
        order: 1;
    }

    .image-placeholder {
        width: 200px;
        height: 200px;
    }

    .image-placeholder i {
        font-size: 6rem;
    }

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

    .btn {
        width: 200px;
        justify-content: center;
    }

    /* Blog Preview Mobile Styles */
    .blog-preview {
        padding: 60px 0;
    }

    .blog-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .blog-card {
        padding: 2rem;
    }

    .blog-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .blog-meta .btn-read-more {
        align-self: flex-end;
    }

    .personal-info .info-row {
        flex-direction: column;
        align-items: center;
    }

    .personal-info .info-item {
        max-width: 100%;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin: 0;
        padding: 2rem;
        margin-left: 50px;
        text-align: left;
    }

    .timeline-item:nth-child(odd) .timeline-content::before,
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -37px;
    }

    .experience-grid {
        grid-template-columns: 1fr;
    }

    .skills-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .soft-skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .nav-container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .timeline-content {
        margin-left: 30px;
    }

    .timeline-item:nth-child(odd) .timeline-content::before,
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -22px;
    }

    .soft-skills-grid {
        grid-template-columns: 1fr;
    }

    .references-grid {
        grid-template-columns: 1fr;
    }

    .certificates-grid {
        grid-template-columns: 1fr;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

.slide-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}