/* ===================================
   CSS Reset & Variables
   =================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-size-base: 16px;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition: all 0.3s ease;
}

/* Dark Mode Colors */
body.dark-mode {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    --bg-light: #1f2937;
    --bg-white: #111827;
    --border-color: #374151;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #e5e7eb 0%, #9ca3af 100%);
    background-attachment: fixed;
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

body.dark-mode {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    background-attachment: fixed;
}

/* ===================================
   Loading Screen
   =================================== */

.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    animation: fadeInUp 0.8s ease;
}

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

.loader-logo {
    margin-bottom: var(--spacing-lg);
}

.logo-text {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-highlight {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.loader-spinner {
    margin: var(--spacing-lg) auto;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

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

.loader-text {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-top: var(--spacing-md);
    animation: pulse 1.5s ease-in-out infinite;
}

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

/* Dark mode loading screen */
body.dark-mode .loading-screen {
    background: var(--bg-white);
}

/* ===================================
   Utility Classes
   =================================== */

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
    position: relative;
    padding-bottom: var(--spacing-md);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-2);
    border-radius: var(--radius-sm);
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-2);
    color: #ffffff;
    box-shadow: var(--shadow-md);
}

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

body.dark-mode .btn-primary {
    color: #ffffff;
}

body.dark-mode .btn-secondary:hover {
    color: #ffffff;
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--bg-white);
}

.highlight {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===================================
   Navigation
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-logo span {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.dark-mode-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-light);
    border: none;
    color: var(--text-primary);
    font-size: 1.125rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.dark-mode-toggle:hover {
    background: var(--gradient-2);
    color: #ffffff;
    transform: scale(1.1);
}

body.dark-mode .dark-mode-toggle {
    background: var(--bg-light);
}

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

.hamburger .bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    transition: var(--transition);
    border-radius: var(--radius-sm);
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    position: relative;
    overflow: hidden;
    transition: background 0.3s ease;
}

body.dark-mode .hero {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-30px); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 100%;
}

.hero-content {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.hero-text {
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    justify-content: center;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.social-links a {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--bg-white);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.25rem;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.social-links a:hover {
    background: var(--gradient-2);
    color: #ffffff;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-down a {
    background: var(--bg-white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
    text-decoration: none;
    transition: var(--transition);
    animation: bounce 2s infinite;
}

.scroll-down a:hover {
    transform: translateY(5px);
    box-shadow: var(--shadow-lg);
    background: var(--primary-color);
    color: #ffffff;
}

body.dark-mode .scroll-down a {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

body.dark-mode .scroll-down a:hover {
    background: var(--primary-color);
    color: #ffffff;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* ===================================
   About Section
   =================================== */

.about {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-image img {
    width: 100%;
    max-width: 350px;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

.about-text h3 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.info-item i {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-top: 3px;
}

.info-item strong {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.info-item p {
    color: var(--text-secondary);
    margin: 0;
}

/* ===================================
   Experience Section
   =================================== */

.experience {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-light);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 30px;
    width: 2px;
    height: 100%;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 70px;
    margin-bottom: var(--spacing-xl);
}

.timeline-icon {
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
}

body.dark-mode .timeline-icon {
    color: #ffffff;
}

.timeline-content {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.timeline-date {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--gradient-2);
    color: #ffffff;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

body.dark-mode .timeline-date {
    color: #ffffff;
}

.timeline-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-content h4 {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.timeline-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.timeline-content ul {
    list-style: none;
    padding-left: 0;
}

.timeline-content ul li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

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

/* ===================================
   Projects Section
   =================================== */

.projects {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-white);
}

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

.project-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.15);
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 220px;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.project-link {
    color: #ffffff;
    font-size: 2rem;
    transition: var(--transition);
}

.project-link:hover {
    transform: scale(1.2);
}

body.dark-mode .project-link {
    color: #ffffff;
}

.project-info {
    padding: var(--spacing-lg);
}

.project-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.project-info p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tag {
    padding: 0.375rem 0.75rem;
    background: var(--bg-light);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ===================================
   Skills Section
   =================================== */

.skills {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-light);
}

.skills-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.skill-category {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.skill-category h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.skill-category h3 i {
    color: var(--primary-color);
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-item {
    padding: 0.5rem 1rem;
    background: var(--bg-light);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
}

.skill-item:hover {
    background: var(--gradient-2);
    color: var(--bg-white);
    transform: translateY(-2px);
}

.soft-skills {
    margin-top: var(--spacing-xl);
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

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

.soft-skill-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
}

.soft-skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

.soft-skill-item:hover {
    background: var(--bg-light);
    transform: translateY(-2px);
}

.soft-skill-item i {
    font-size: 2rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.soft-skill-item:hover i {
    transform: scale(1.1);
}

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

/* ===================================
   Awards Section
   =================================== */

.awards {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-white);
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.award-card {
    background: var(--bg-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
}

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

.award-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    border-radius: 50%;
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 2rem;
}

body.dark-mode .award-icon {
    color: #ffffff;
}

.award-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.award-card p {
    color: var(--text-secondary);
}

/* ===================================
   Contact Section
   =================================== */

.contact {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-light);
}

.contact-description {
    text-align: center;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    font-size: 1.125rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
}

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

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.25rem;
    flex-shrink: 0;
}

body.dark-mode .contact-icon {
    color: #ffffff;
}

.contact-details h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.contact-details a,
.contact-details p {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.contact-details a:hover {
    color: var(--primary-color);
}

.contact-form-container {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

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

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

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

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

.contact-form button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

/* ===================================
   Footer
   =================================== */

.footer {
    padding: var(--spacing-2xl) 0 var(--spacing-xl) 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: var(--text-primary);
    transition: background 0.3s ease, color 0.3s ease;
}

body.dark-mode .footer {
    background: #0f172a;
    color: #ffffff;
}

.footer-back-to-top {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.footer-scroll-top {
    background: var(--bg-white);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.footer-scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: var(--primary-color);
    color: #ffffff;
}

body.dark-mode .footer-scroll-top {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

body.dark-mode .footer-scroll-top:hover {
    background: var(--primary-color);
    color: #ffffff;
}

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

.footer-content p {
    color: var(--text-primary);
    margin: 0;
}

body.dark-mode .footer-content p {
    color: #ffffff;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-white);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: var(--transition);
    text-decoration: none;
    box-shadow: var(--shadow-md);
}

body.dark-mode .footer-social a {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.footer-social a:hover {
    background: var(--gradient-2);
    color: #ffffff;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

body.dark-mode .footer-social a:hover {
    background: var(--gradient-2);
    color: #ffffff;
}

/* ===================================
   Scroll to Top Button
   =================================== */

.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-2);
    color: #ffffff;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

body.dark-mode .scroll-top {
    color: #ffffff;
}

.scroll-top.active {
    opacity: 1;
    visibility: visible;
}

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

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 968px) {
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .about-image {
        order: -1;
        text-align: center;
    }
    
    .about-image img {
        max-width: 300px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-info {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-content {
        grid-template-columns: 1fr;
    }
    
    .soft-skill-items {
        grid-template-columns: repeat(2, 1fr);
        justify-items: center;
    }
    
    .soft-skill-item {
        width: 100%;
        max-width: 180px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-white);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-lg) 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .dark-mode-toggle {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-base: 14px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .soft-skill-items {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .soft-skill-item {
        flex: 0 1 calc(50% - var(--spacing-sm) / 2);
        min-width: 140px;
        max-width: 160px;
    }
    
    .awards-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Dark Mode Additional Styles
   =================================== */

/* Section backgrounds - darker so cards stand out */
body.dark-mode .experience,
body.dark-mode .skills,
body.dark-mode .contact {
    background: #141c2e;
}

/* Timeline Content - EXACT same as light mode, white shadow instead of black */
body.dark-mode .timeline-content {
    background: var(--bg-light);
    box-shadow: 0 4px 6px -1px rgba(255, 255, 255, 0.1);
}

/* Project Cards - EXACT same as light mode */
body.dark-mode .project-card {
    background: var(--bg-light);
    box-shadow: 0 4px 6px -1px rgba(255, 255, 255, 0.1);
}

body.dark-mode .project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.15);
}

/* Skill Categories - EXACT same as light mode */
body.dark-mode .skill-category {
    background: var(--bg-light);
    box-shadow: 0 4px 6px -1px rgba(255, 255, 255, 0.1);
}

/* Soft Skills Container - EXACT same as light mode */
body.dark-mode .soft-skills {
    background: var(--bg-light);
    box-shadow: 0 4px 6px -1px rgba(255, 255, 255, 0.1);
}

/* Award Cards - EXACT same as light mode, NO border, NO scale */
body.dark-mode .award-card {
    background: var(--bg-light);
    box-shadow: 0 4px 6px -1px rgba(255, 255, 255, 0.1);
}

body.dark-mode .award-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(255, 255, 255, 0.1);
}

/* Contact Items - EXACT same as light mode */
body.dark-mode .contact-item {
    background: var(--bg-light);
    box-shadow: 0 4px 6px -1px rgba(255, 255, 255, 0.1);
}

body.dark-mode .contact-item:hover {
    transform: translateX(5px);
    box-shadow: 0 10px 15px -3px rgba(255, 255, 255, 0.1);
}

/* Contact Form Container - EXACT same as light mode */
body.dark-mode .contact-form-container {
    background: var(--bg-light);
    box-shadow: 0 4px 6px -1px rgba(255, 255, 255, 0.1);
}

body.dark-mode .contact-form input,
body.dark-mode .contact-form textarea {
    background: var(--bg-light);
    color: var(--text-primary);
    border-color: var(--border-color);
}

body.dark-mode .tag,
body.dark-mode .skill-item {
    background: var(--bg-white);
    color: var(--text-primary);
}

/* Fix skill-item hover in dark mode - keep white text on gradient */
body.dark-mode .skill-item:hover {
    background: var(--gradient-2);
    color: #ffffff !important;
    transform: translateY(-2px);
}

/* Add hover effect for soft skills in dark mode */
body.dark-mode .soft-skill-item:hover {
    background: var(--bg-white);
    transform: translateY(-2px);
}

body.dark-mode .soft-skill-item:hover i {
    transform: scale(1.1);
}

body.dark-mode .social-links a {
    background: var(--bg-light);
    color: var(--text-primary);
}

body.dark-mode .social-links a:hover {
    background: var(--gradient-2);
    color: #ffffff;
}

/* Smooth transitions for all dark mode elements */
.navbar,
.project-card,
.skill-category,
.award-card,
.contact-item,
.contact-form-container,
.timeline-content,
.soft-skills,
.contact-form input,
.contact-form textarea,
.tag,
.skill-item,
.soft-skill-item,
.social-links a {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}