:root {
    /* Elegant Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --dark-gradient: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --elegant-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --dark-elegant-gradient: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
    
    /* Alternative Hero Gradients */
    --ocean-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #36d1dc 100%);
    --sunset-gradient: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
    --forest-gradient: linear-gradient(135deg, #56ab2f 0%, #a8e6cf 100%);
    --teal-gradient: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    
    /* Text Colors */
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --text-light: #e2e8f0;
    --text-dark: #1a202c;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-dark: #1a202c;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-card-dark: rgba(26, 26, 46, 0.95);
    
    /* Accent Colors */
    --accent-primary: #667eea;
    --accent-secondary: #764ba2;
    --accent-tertiary: #f093fb;
    --accent-success: #48bb78;
    --accent-warning: #ed8936;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--ocean-gradient);
    color: var(--text-primary);
    line-height: 1.7;
    transition: var(--transition-normal);
    font-weight: 400;
    letter-spacing: -0.01em;
}

body.dark-theme {
    background: var(--dark-elegant-gradient);
    color: var(--text-light);
}

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

/* Header */
header {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

body.dark-theme header {
    background: var(--bg-card-dark);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
    font-size: 28px;
    font-weight: 700;
    background: var(--ocean-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    letter-spacing: -0.02em;
    transition: var(--transition-normal);
}

body.dark-theme .logo {
    background: linear-gradient(135deg, #667eea 0%, #f093fb 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-normal);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    position: relative;
}

body.dark-theme .nav-links a {
    color: var(--text-light);
}

.nav-links a:hover {
    color: var(--accent-primary);
    background: rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-secondary);
    border: 2px solid var(--accent-primary);
    padding: 12px 18px;
    border-radius: var(--radius-xl);
    cursor: pointer;
    font-size: 20px;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

body.dark-theme .theme-toggle {
    background: var(--bg-dark);
    border-color: var(--accent-tertiary);
}

.theme-toggle:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-glow);
    background: var(--accent-primary);
    color: white;
}

body.dark-theme .theme-toggle:hover {
    background: var(--accent-tertiary);
}

/* Hero Section */
.hero {
    padding: 80px 0 60px 0;
    color: white;
    position: relative;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.hero-image {
    width: 240px;
    height: 240px;
    border-radius: 50%;
    border: 4px solid rgba(255, 255, 255, 0.2);
    object-fit: cover;
    animation: fadeIn 0.8s ease, float 3s ease-in-out infinite;
    box-shadow: var(--shadow-xl), 0 0 40px rgba(102, 126, 234, 0.3);
    flex-shrink: 0;
    position: relative;
}

.hero-image::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: 50%;
    background: var(--ocean-gradient);
    z-index: -1;
    opacity: 0.7;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.hero-text {
    text-align: left;
    max-width: 650px;
    flex: 1;
}

.hero-greeting {
    display: inline-block;
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 10px;
    opacity: 0.95;
    animation: fadeInUp 0.6s ease;
}

.hero h1 {
    font-size: 64px;
    margin-bottom: 16px;
    font-weight: 800;
    line-height: 1.1;
    animation: fadeInUp 0.8s ease 0.1s both;
    background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 22px;
    font-weight: 500;
    margin-bottom: 20px;
    opacity: 0.9;
    color: rgba(255, 255, 255, 0.95);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-description {
    font-size: 18px;
    line-height: 1.7;
    margin-bottom: 30px;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease 0.3s both;
}

/* Social Links */
.hero-social {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: var(--transition-normal);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--ocean-gradient);
    opacity: 0;
    transition: var(--transition-normal);
    border-radius: 50%;
}

.social-link:hover::before {
    opacity: 0.2;
}

.social-link:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: var(--shadow-glow);
    border-color: rgba(255, 255, 255, 0.4);
}

/* Expertise Tags */
.hero-tags {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.5s both;
}

.tag {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 10px 22px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.tag:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Experience Section */
.experience {
    background: #f9f9f9;
    padding: 80px 0;
    transition: background 0.3s ease;
}

body.dark-theme .experience {
    background: #16213e;
}

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

.experience-item {
    display: flex;
    gap: 30px;
    background: white;
    padding: 35px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    position: relative;
    animation: fadeInUp 0.6s ease;
}

body.dark-theme .experience-item {
    background: #1a1a2e;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
}

.experience-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

body.dark-theme .experience-item:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.experience-logo {
    flex-shrink: 0;
}

.logo-placeholder {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.experience-content {
    flex: 1;
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
    gap: 15px;
    flex-wrap: wrap;
}

.experience-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 5px;
    color: #333;
    transition: color 0.3s ease;
}

body.dark-theme .experience-title {
    color: #e4e4e4;
}

.experience-company {
    font-size: 16px;
    color: #666;
    font-weight: 500;
    transition: color 0.3s ease;
}

body.dark-theme .experience-company {
    color: #b4b4b4;
}

.experience-badge {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.experience-duration {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #888;
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

body.dark-theme .experience-duration {
    color: #999;
}

.experience-duration svg {
    flex-shrink: 0;
}

.experience-highlights {
    list-style: none;
    padding: 0;
    margin: 0;
}

.experience-highlights li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 10px;
    font-size: 15px;
    line-height: 1.6;
    color: #555;
    transition: color 0.3s ease;
}

body.dark-theme .experience-highlights li {
    color: #b4b4b4;
}

.experience-highlights li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
    font-size: 16px;
}

.experience-highlights li:last-child {
    margin-bottom: 0;
}

/* Projects Section */
.projects {
    background: white;
    padding: 80px 0;
    transition: background 0.3s ease;
}

body.dark-theme .projects {
    background: #0f1419;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #333;
    transition: color 0.3s ease;
}

body.dark-theme .section-title {
    color: #e4e4e4;
}

/* Projects Container */
.projects-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    margin-top: 40px;
}

/* Filter Sidebar */
.filter-sidebar {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.1);
    height: fit-content;
    position: sticky;
    top: 100px;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

body.dark-theme .filter-sidebar {
    background: #1a1a2e;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.5);
}

.filter-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #333;
    transition: color 0.3s ease;
}

body.dark-theme .filter-title {
    color: #e4e4e4;
}

.filter-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    background: #f8f8f8;
    border: 2px solid transparent;
    border-radius: 10px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
    color: #555;
    text-align: left;
    width: 100%;
}

body.dark-theme .filter-item {
    background: #0f1419;
    color: #b4b4b4;
}

.filter-item:hover {
    background: #f0f0f0;
    transform: translateX(5px);
    border-color: #667eea;
}

body.dark-theme .filter-item:hover {
    background: #16213e;
}

.filter-item.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: #667eea;
}

.filter-icon {
    font-size: 18px;
    flex-shrink: 0;
}

.filter-name {
    flex-grow: 1;
}

.filter-count {
    background: rgba(255, 255, 255, 0.3);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.filter-item.active .filter-count {
    background: rgba(255, 255, 255, 0.4);
}

/* Project Grid */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    min-height: 400px; /* Prevent layout shift */
    transition: opacity 0.3s ease;
}

/* No Projects Message */
.no-projects-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    background: var(--card-bg);
    border-radius: 12px;
    border: 2px dashed var(--accent-color);
    margin: 2rem 0;
}

.no-projects-message h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.no-projects-message p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.project-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    cursor: pointer;
    animation: fadeInUp 0.5s ease;
    opacity: 0;
    animation-fill-mode: forwards;
    border: 1px solid rgba(102, 126, 234, 0.1);
    position: relative;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--elegant-gradient);
    opacity: 0;
    transition: var(--transition-normal);
}

.project-card:nth-child(1) { animation-delay: 0.05s; }
.project-card:nth-child(2) { animation-delay: 0.1s; }
.project-card:nth-child(3) { animation-delay: 0.15s; }
.project-card:nth-child(4) { animation-delay: 0.2s; }
.project-card:nth-child(5) { animation-delay: 0.25s; }
.project-card:nth-child(6) { animation-delay: 0.3s; }

body.dark-theme .project-card {
    background: var(--bg-dark);
    box-shadow: var(--shadow-xl);
    border-color: rgba(102, 126, 234, 0.2);
}

.project-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

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

.project-card.hidden {
    display: none;
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.project-content {
    padding: 25px;
}

.project-category {
    display: inline-block;
    background: var(--elegant-gradient);
    color: white;
    padding: 8px 18px;
    border-radius: var(--radius-xl);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.project-category:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.project-title {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-primary);
    transition: var(--transition-normal);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

body.dark-theme .project-title {
    color: var(--text-light);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 18px;
    font-size: 15px;
    transition: var(--transition-normal);
    line-height: 1.6;
    font-weight: 400;
}

body.dark-theme .project-description {
    color: rgba(255, 255, 255, 0.8);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 15px;
}

.tech-tag {
    background: var(--bg-secondary);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-secondary);
    transition: var(--transition-normal);
    font-weight: 500;
    border: 1px solid rgba(102, 126, 234, 0.1);
    position: relative;
    overflow: hidden;
}

.tech-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--elegant-gradient);
    opacity: 0.1;
    transition: var(--transition-normal);
}

.tech-tag:hover::before {
    left: 0;
}

body.dark-theme .tech-tag {
    background: rgba(26, 26, 46, 0.8);
    color: var(--text-light);
    border-color: rgba(102, 126, 234, 0.2);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    padding: 12px 24px;
    background: var(--elegant-gradient);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.project-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.project-link:hover::before {
    left: 100%;
}

.project-link:hover {
    transform: translateY(-2px) translateX(4px);
    box-shadow: var(--shadow-glow);
}

/* Skills Section */
.skills {
    background: var(--bg-secondary);
    padding: 80px 0;
    transition: var(--transition-normal);
    position: relative;
}

.skills::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--elegant-gradient);
    opacity: 0.03;
    pointer-events: none;
}

body.dark-theme .skills {
    background: var(--bg-dark);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.skill-category {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

body.dark-theme .skill-category {
    background: #1a1a2e;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
}

.skill-category h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #667eea;
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-item {
    background: #f0f0f0;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    transition: background 0.3s ease, color 0.3s ease;
}

body.dark-theme .skill-item {
    background: #2d2d44;
    color: #e4e4e4;
}

/* Certificates Section */
.certificates {
    background: white;
    padding: 80px 0;
    transition: background 0.3s ease;
}

body.dark-theme .certificates {
    background: #0f1419;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.certificate-card {
    background: white;
    padding: 35px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s;
    animation: fadeInUp 0.6s ease;
    border: 2px solid transparent;
}

body.dark-theme .certificate-card {
    background: #1a1a2e;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
}

.certificate-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
    border-color: #667eea;
}

body.dark-theme .certificate-card:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6);
}

.certificate-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.3);
}

.certificate-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
    transition: color 0.3s ease;
}

body.dark-theme .certificate-title {
    color: #e4e4e4;
}

.certificate-issuer {
    font-size: 15px;
    color: #666;
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

body.dark-theme .certificate-issuer {
    color: #b4b4b4;
}

.certificate-badge {
    display: inline-block;
    background: #e8f5e9;
    color: #2e7d32;
    padding: 6px 16px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

body.dark-theme .certificate-badge {
    background: rgba(46, 125, 50, 0.2);
    color: #81c784;
}

/* Section Divider */
.section-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 0;
    background: white;
    transition: background 0.3s ease;
}

body.dark-theme .section-divider {
    background: #0f1419;
}

.divider-line {
    flex: 1;
    max-width: 300px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #667eea, transparent);
}

.divider-icon {
    margin: 0 20px;
    font-size: 28px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.3);
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.contact-btn {
    background: white;
    color: #667eea;
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

.contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Responsive */
@media (max-width: 968px) {
    .projects-container {
        grid-template-columns: 1fr;
    }

    .filter-sidebar {
        position: static;
        max-width: 100%;
    }

    .filter-list {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 10px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 60px 0 40px 0;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-content {
        flex-direction: column;
        gap: 30px;
    }

    .hero-text {
        text-align: center;
    }

    .hero-image {
        width: 160px;
        height: 160px;
    }

    .hero-social {
        justify-content: center;
    }

    .experience-item {
        flex-direction: column;
        gap: 20px;
        padding: 25px;
    }

    .logo-placeholder {
        width: 60px;
        height: 60px;
    }

    .experience-title {
        font-size: 20px;
    }

    .experience-company {
        font-size: 15px;
    }

    .experience-highlights li {
        font-size: 14px;
    }

    .certificates-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .certificate-card {
        padding: 25px;
    }

    .certificate-icon {
        width: 70px;
        height: 70px;
    }

    .divider-line {
        max-width: 100px;
    }

    .divider-icon {
        width: 50px;
        height: 50px;
        font-size: 24px;
        margin: 0 15px;
    }

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

    .nav-links {
        gap: 15px;
        font-size: 14px;
    }

    .filter-list {
        grid-template-columns: 1fr;
    }
}