/* Theme variables */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --bg-color: #ffffff;
    --bg-secondary: #f8fafc;
    --text-color: #334155;
    --heading-color: #1e293b;
    --card-bg: white;
    --card-shadow: rgba(99, 102, 241, 0.1);
    --footer-bg: #1e293b;
    --footer-text: white;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --border-radius: 16px;
    --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);
}

.dark-theme {
    --primary-color: #818cf8;
    --secondary-color: #a78bfa;
    --accent-color: #fb7185;
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --text-color: #e2e8f0;
    --heading-color: #f1f5f9;
    --card-bg: #334155;
    --card-shadow: rgba(0, 0, 0, 0.4);
    --footer-bg: #020617;
    --footer-text: #e2e8f0;
    --gradient-1: linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);
    --gradient-2: linear-gradient(135deg, #fb7185 0%, #f472b6 100%);
    --gradient-3: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background: var(--bg-color);
    transition: var(--transition);
    font-weight: 400;
    letter-spacing: -0.025em;
}

/* Add smooth scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-1);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-2);
}

/* Theme toggle */
.theme-toggle {
    cursor: pointer;
    font-size: 1.1rem;
    color: var(--heading-color);
    transition: var(--transition);
    margin-left: 0.5rem;
    padding: 8px;
    border-radius: 50%;
    background: transparent;
    border: none;
    z-index: 1001;
    flex-shrink: 0;
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    transform: rotate(20deg) scale(1.1);
    color: var(--primary-color);
}

/* Burger menu - hidden by default, shown on mobile */
.burger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1002;
    transition: var(--transition);
    padding: 5px;
}

.burger .line1,
.burger .line2,
.burger .line3 {
    width: 25px;
    height: 3px;
    background: var(--heading-color);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.theme-toggle:hover {
    transform: rotate(20deg) scale(1.1);
    color: var(--primary-color);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 2%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: var(--transition);
    min-height: 70px;
    box-sizing: border-box;
}

.dark-theme .navbar {
    background: rgba(15, 23, 42, 0.95);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
    font-size: 1.3rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: var(--transition);
    text-decoration: none;
    letter-spacing: -0.05em;
    flex-shrink: 0;
    min-width: 120px;
}

.nav-links {
    display: flex;
    list-style: none;
    justify-content: center;
    flex-wrap: nowrap;
    align-items: center;
    margin: 0;
    padding: 0;
    flex-shrink: 1;
    overflow: hidden;
}

.nav-links li {
    margin: 0 0.25rem;
    flex-shrink: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--heading-color);
    font-weight: 600;
    transition: var(--transition);
    display: block;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    font-size: 0.85rem;
    min-width: fit-content;
}

.nav-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--gradient-1);
    transition: width 0.3s ease;
    z-index: -1;
}

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

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

.nav-links a.active {
    color: white;
    background: var(--gradient-1);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--heading-color);
    padding: 0;
    position: relative;
    overflow: hidden; /* Keep black for Three.js background */
}

#heroCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    display: block;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 2rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

/* Hero text colors - different colors for light and dark mode */
.hero-content h1,
.hero-content .hero-name {
    color: #000000 !important; /* Black text in light mode */
    text-shadow: none;
}

.dark-theme .hero-content h1,
.dark-theme .hero-content .hero-name {
    color: #ffffff !important; /* White text in dark mode */
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.05em;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 1s ease-out;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-name {
    font-size: 1.3rem !important;
    font-weight: 500;
    margin-bottom: 2.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-color) !important;
    opacity: 0.8;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
    margin-top: 2.5rem;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-buttons .cta-button {
    display: inline-block;
    padding: 1.2rem 2.5rem;
    margin: 0 1rem;
    background: var(--gradient-1);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    border: none;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.hero-buttons .cta-button::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: left 0.6s;
}

.hero-buttons .cta-button:hover::before {
    left: 100%;
}

.hero-buttons .cta-button.secondary {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    backdrop-filter: blur(20px);
}

.dark-theme .hero-buttons .cta-button.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--heading-color);
    border-color: var(--primary-color);
}

.hero-buttons .cta-button.tertiary {
    background: var(--gradient-2);
    color: white;
    border: none;
    backdrop-filter: blur(20px);
}

.dark-theme .hero-buttons .cta-button.tertiary {
    background: var(--gradient-2);
    color: white;
}

.hero-buttons .cta-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

/* About Section */
.about {
    padding: 6rem 10%;
    background: var(--bg-secondary);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%23667eea" fill-opacity="0.03"%3E%3Ccircle cx="30" cy="30" r="2"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
    pointer-events: none;
}

.about h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: var(--heading-color);
    font-size: 3rem;
    font-weight: 700;
    transition: var(--transition);
    position: relative;
}

.about h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-1);
    border-radius: 2px;
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
}

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

.about-image {
    position: relative;
    transform: perspective(1000px) rotateY(-15deg);
    transition: var(--transition);
}

.about-image:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.05);
}

.about-image::after {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    background: var(--gradient-1);
    z-index: 1;
    border-radius: var(--border-radius);
    opacity: 0.8;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--border-radius);
    position: relative;
    z-index: 2;
    box-shadow: var(--shadow-xl);
    filter: grayscale(0.2);
    transition: var(--transition);
}

.about-image:hover img {
    filter: grayscale(0);
    transform: scale(1.02);
}

.about-text {
    padding-left: 3rem;
    position: relative;
}

.about-text::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-1);
    border-radius: 2px;
}

.about-text p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-color);
    transition: var(--transition);
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

/* Skills Section */
.skills-section {
    padding: 6rem 10%;
    background: var(--bg-color);
    transition: var(--transition);
    position: relative;
}

.skills-section h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: var(--heading-color);
    font-size: 3rem;
    font-weight: 700;
    transition: var(--transition);
    position: relative;
}

.skills-section h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-2);
    border-radius: 2px;
}

.skills-content {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--card-bg);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.skills-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-2);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    justify-items: center;
}

.skill-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1.5rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid rgba(102, 126, 234, 0.2);
    width: 100%;
    max-width: 180px;
    position: relative;
    overflow: hidden;
}

.skill-badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.6s;
}

.skill-badge:hover::before {
    left: 100%;
}

.skill-badge:hover {
    transform: translateY(-8px) scale(1.05);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    box-shadow: var(--shadow-lg);
}

.skill-badge i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: var(--transition);
}

.skill-badge:hover i {
    transform: scale(1.2);
}

.skill-badge span {
    font-size: 1rem;
    font-weight: 600;
    color: var(--heading-color);
    text-align: center;
    transition: var(--transition);
}

/* Education Section */
.education {
    padding: 6rem 10%;
    background: var(--bg-secondary);
    transition: var(--transition);
    position: relative;
}

.education::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,%3Csvg width="40" height="40" viewBox="0 0 40 40" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="%23764ba2" fill-opacity="0.03"%3E%3Cpath d="M20 20l20-20v40z"/%3E%3C/g%3E%3C/svg%3E');
    pointer-events: none;
}

.education h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: var(--heading-color);
    font-size: 3rem;
    font-weight: 700;
    transition: var(--transition);
    position: relative;
}

.education h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-3);
    border-radius: 2px;
}

.education-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.education-item {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.education-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-3);
}

.education-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.education-item:nth-child(1) {
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.05), rgba(0, 242, 254, 0.05));
}

.education-item:nth-child(2) {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
}

.education-item:nth-child(3) {
    background: linear-gradient(135deg, rgba(240, 147, 251, 0.05), rgba(245, 87, 108, 0.05));
}

.education-image {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    height: 180px;
}

.education-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
    filter: brightness(0.9) contrast(1.1);
}

.education-item:hover .education-image img {
    transform: scale(1.1);
    filter: brightness(1) contrast(1.2);
}

.education-details {
    text-align: center;
    position: relative;
}

.education-item h3 {
    color: var(--heading-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 700;
    transition: var(--transition);
    line-height: 1.4;
}

.education-item .institution {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.education-item .duration {
    color: var(--text-color);
    font-size: 0.95rem;
    margin-bottom: 0.8rem;
    opacity: 0.8;
}

.education-item .grade {
    color: var(--heading-color);
    font-weight: 600;
    font-size: 1.1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Projects Section */
.projects {
    padding: 6rem 10%;
    background: var(--bg-color);
    transition: var(--transition);
    position: relative;
}

.projects::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,%3Csvg width="80" height="80" viewBox="0 0 80 80" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="%23f093fb" fill-opacity="0.03"%3E%3Cpath d="M0 0h40v40H0zM40 40h40v40H40z"/%3E%3C/g%3E%3C/svg%3E');
    pointer-events: none;
}

.projects h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: var(--heading-color);
    font-size: 3rem;
    font-weight: 700;
    transition: var(--transition);
    position: relative;
}

.projects h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-2);
    border-radius: 2px;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-2);
}

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.project-card img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: var(--transition);
    filter: brightness(0.9) contrast(1.1);
}

.project-card:hover img {
    transform: scale(1.1);
    filter: brightness(1) contrast(1.2);
}

.project-card h3 {
    padding: 1.5rem 1.5rem 0.5rem;
    color: var(--heading-color);
    font-size: 1.4rem;
    font-weight: 700;
    transition: var(--transition);
}

.project-card p {
    padding: 0 1.5rem;
    color: var(--text-color);
    transition: var(--transition);
    line-height: 1.6;
    opacity: 0.9;
    flex: 1;
    margin-bottom: 1.5rem;
}

.project-links {
    padding: 0 1.5rem 1.5rem;
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

.project-links a {
    text-decoration: none;
    color: white;
    font-weight: 600;
    padding: 0.8rem 1.5rem;
    background: var(--gradient-1);
    border-radius: 8px;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.project-links a:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* Certifications Section */
.certifications {
    padding: 6rem 10%;
    background: var(--bg-secondary);
    transition: var(--transition);
    position: relative;
}

.certifications::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="%234facfe" fill-opacity="0.03"%3E%3Cpolygon points="30,2 58,17 58,43 30,58 2,43 2,17"/%3E%3C/g%3E%3C/svg%3E');
    pointer-events: none;
}

.certifications h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: var(--heading-color);
    font-size: 3rem;
    font-weight: 700;
    transition: var(--transition);
    position: relative;
}

.certifications h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-3);
    border-radius: 2px;
}

.certifications-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    padding: 0 1rem;
    max-width: 1400px;
    margin: 0 auto;
}

.certification-item {
    background: var(--card-bg);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
    min-height: 280px;
}

.certification-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-3);
}

.certification-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,%3Csvg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="%234facfe" fill-opacity="0.03"%3E%3Cpath d="M0 0h10v10H0zM10 10h10v10H10z"/%3E%3C/g%3E%3C/svg%3E');
    opacity: 0.5;
    z-index: 0;
}

.certification-item:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: var(--shadow-xl);
}

.certification-item:nth-child(1) {
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.05), rgba(0, 242, 254, 0.05));
}

.certification-item:nth-child(2) {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
}

.certification-item:nth-child(3) {
    background: linear-gradient(135deg, rgba(240, 147, 251, 0.05), rgba(245, 87, 108, 0.05));
}

.certification-item:nth-child(4) {
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.05), rgba(16, 185, 129, 0.05));
}

.certification-item .cert-icon {
    font-size: 3.5rem;
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.certification-item:hover .cert-icon {
    transform: scale(1.15) rotate(5deg);
    transition: var(--transition);
}

.certification-item h3 {
    color: var(--heading-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
    position: relative;
    z-index: 1;
    font-weight: 700;
    transition: var(--transition);
    line-height: 1.4;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 60px;
}

.certification-item .issuer {
    color: var(--text-color);
    font-size: 1rem;
    position: relative;
    z-index: 1;
    font-weight: 600;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    padding: 0.4rem 1.2rem;
    border-radius: 20px;
    display: inline-block;
    border: 2px solid transparent;
    background-clip: padding-box;
}

.cert-button {
    color: white;
    font-size: 1rem;
    position: relative;
    z-index: 1;
    font-weight: 600;
    background: var(--gradient-1);
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    display: inline-block;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    border: none;
    cursor: pointer;
    margin-top: auto;
}

.cert-button:hover {
    background: var(--gradient-2);
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-lg);
    color: white;
}

/* Make it responsive for smaller screens */
@media (max-width: 1200px) {
    .certifications-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .certifications-content {
        grid-template-columns: 1fr;
    }
}

/* Contact Section */
.contact {
    padding: 6rem 10%;
    background: var(--bg-color);
    transition: var(--transition);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,%3Csvg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="%23667eea" fill-opacity="0.03"%3E%3Cpath d="M50 0l50 50-50 50L0 50z"/%3E%3C/g%3E%3C/svg%3E');
    pointer-events: none;
}

.contact h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: var(--heading-color);
    font-size: 3rem;
    font-weight: 700;
    transition: var(--transition);
    position: relative;
}

.contact h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-1);
    border-radius: 2px;
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    background: var(--card-bg);
    padding: 4rem 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.contact-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
}

.contact-info {
    margin-bottom: 3rem;
}

.contact-info p {
    font-size: 1.3rem;
    color: var(--text-color);
    margin-bottom: 3rem;
    transition: var(--transition);
    line-height: 1.7;
    opacity: 0.9;
}

.contact-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.contact-buttons .cta-button {
    padding: 1.2rem 2.5rem;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    background: var(--gradient-1);
    color: white;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.contact-buttons .cta-button::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: left 0.6s;
}

.contact-buttons .cta-button:hover::before {
    left: 100%;
}

.contact-buttons .cta-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

.contact-buttons .cta-button.secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    backdrop-filter: blur(20px);
}

.dark-theme .contact-buttons .cta-button.secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--heading-color);
    border-color: var(--primary-color);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.social-links a {
    color: white !important;
    font-size: 1.5rem;
    transition: var(--transition);
    padding: 1rem;
    background: var(--gradient-1);
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.social-links a:hover {
    transform: translateY(-5px) scale(1.1) rotate(10deg);
    box-shadow: var(--shadow-xl);
    background: var(--gradient-2);
    color: white !important;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--footer-bg);
    color: var(--footer-text);
    transition: var(--transition);
}

/* Media Queries */
@media screen and (max-width: 1400px) {
    .navbar {
        padding: 0.6rem 1.5%;
    }
    
    .nav-links li {
        margin: 0 0.2rem;
    }
    
    .nav-links a {
        padding: 0.4rem 0.6rem;
        font-size: 0.8rem;
    }
    
    .logo {
        font-size: 1.2rem;
        min-width: 110px;
    }
    
    .theme-toggle {
        font-size: 1rem;
        padding: 6px;
        min-width: 35px;
        height: 35px;
    }
}

@media screen and (max-width: 1200px) {
    .certifications-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        gap: 2rem;
    }
    
    .skills-content, 
    .education-content {
        gap: 1.5rem;
    }
    
    .section, .about, .skills-section, .education, .projects, .certifications, .contact {
        padding: 4rem 5%;
    }
    
    .navbar {
        padding: 0.5rem 1%;
        min-height: 60px;
    }
    
    .nav-links li {
        margin: 0 0.1rem;
    }
    
    .nav-links a {
        padding: 0.3rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .logo {
        font-size: 1.1rem;
        min-width: 100px;
    }
    
    .theme-toggle {
        font-size: 0.9rem;
        padding: 5px;
        min-width: 30px;
        height: 30px;
        margin-left: 0.25rem;
    }
}

@media screen and (max-width: 1000px) {
    .nav-links a {
        padding: 0.25rem 0.4rem;
        font-size: 0.7rem;
    }
    
    .nav-links li {
        margin: 0 0.05rem;
    }
    
    .logo {
        font-size: 1rem;
        min-width: 90px;
    }
}

@media screen and (max-width: 992px) {
    .about-grid {
        grid-template-columns: 250px 1fr;
        gap: 2rem;
    }
    
    .education-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-name {
        font-size: 1rem !important;
    }
}

@media screen and (max-width: 768px) {
    /* Navigation for mobile */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        padding: 1rem 1.5rem;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        display: flex;
        justify-content: space-between;
        align-items: center;
        min-height: 70px;
    }
    
    .dark-theme .navbar {
        background: rgba(15, 23, 42, 0.95);
    }
    
    .logo {
        font-size: 1.4rem;
        z-index: 1002;
    }
    
    /* Hide navigation links by default on mobile */
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--card-bg);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 100px;
        transition: right 0.3s ease-in-out;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        z-index: 2000;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links li {
        margin: 1rem 0;
        width: 80%;
        text-align: center;
    }
    
    .nav-links a {
        padding: 1rem 1.5rem;
        font-size: 1.1rem;
        color: var(--heading-color);
        display: block;
        width: 100%;
        border-radius: 12px;
        transition: var(--transition);
    }
    
    .nav-links a:hover {
        background: var(--gradient-1);
        color: white;
        transform: none;
    }
    
    /* Show burger menu on mobile */
    .burger {
        display: flex !important;
        flex-direction: column;
        cursor: pointer;
        z-index: 1002;
        transition: var(--transition);
        padding: 6px;
        background: rgba(0, 0, 0, 0.1);
        border-radius: 4px;
    }
    
    .burger .line1,
    .burger .line2,
    .burger .line3 {
        width: 20px;
        height: 2px;
        background: var(--heading-color);
        margin: 2px 0;
        transition: 0.3s;
        border-radius: 2px;
    }
    
    /* Burger animation when active */
    .burger.toggle .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .burger.toggle .line2 {
        opacity: 0;
    }
    
    .burger.toggle .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    /* Theme toggle positioning */
    .theme-toggle {
        position: absolute;
        top: 1rem;
        right: 4.5rem;
        z-index: 1002;
        background: transparent;
        font-size: 1.2rem;
        padding: 0.5rem;
    }

    /* Adjust hero section */
    .hero {
        padding: 4rem 1rem 2rem;
        min-height: 100vh;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
        margin-bottom: 1rem;
    }
    
    .hero-name {
        font-size: 1rem !important;
        padding: 0 1rem;
        margin-bottom: 2rem;
    }
    
    .hero-buttons {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    
    .hero-buttons .cta-button {
        width: 80%;
        text-align: center;
        margin: 0;
    }

    /* Adjust sections spacing */
    .section, .about, .skills-section, .education, .projects, .certifications, .contact {
        padding: 4rem 1rem 6rem;
    }
    
    /* About section mobile */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-image {
        max-width: 250px;
        margin: 0 auto;
    }
    
    .about-text {
        padding-right: 0;
        text-align: center;
    }
    
    /* Skills section mobile */
    .skills-content {
        padding: 2rem;
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .skill-badge {
        padding: 1.5rem 1rem;
        max-width: none;
    }
    
    .skill-badge i {
        font-size: 2rem;
    }
    
    .skill-badge span {
        font-size: 0.9rem;
    }
    
    /* Education section mobile */
    .education-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .education-item {
        max-width: 300px;
        margin: 0 auto;
    }
    
    /* Projects section mobile */
    .project-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .project-card {
        max-width: 350px;
        margin: 0 auto;
    }
    
    /* Certifications section mobile */
    .certifications-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .certification-item {
        max-width: 320px;
        margin: 0 auto;
        min-height: 280px;
        width: 100%;
        padding: 2rem 1.5rem;
    }
    
    .certification-item h3 {
        font-size: 1.1rem;
        line-height: 1.3;
        margin-bottom: 1.5rem;
        min-height: 60px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .cert-button {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
        width: auto;
        min-width: 120px;
    }

    /* Contact section mobile */
    .contact-content {
        padding: 2.5rem 1.5rem;
        margin: 0 1rem;
    }
    
    .contact-info p {
        font-size: 1.1rem;
        margin-bottom: 2rem;
        text-align: center;
    }
    
    .contact-buttons {
        flex-direction: column;
        gap: 1.2rem;
        align-items: center;
        width: 100%;
    }
    
    .contact-buttons .cta-button {
        width: 100%;
        max-width: 280px;
        text-align: center;
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
    
    /* Social links mobile */
    .social-links {
        gap: 1.5rem;
        margin-top: 2.5rem;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .social-links a {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
        padding: 0.8rem;
        flex-shrink: 0;
    }
    
    /* Footer adjustment */
    footer {
        margin-bottom: 0;
        padding: 1rem;
    }
}

/* Small devices */
@media screen and (max-width: 375px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-name {
        font-size: 0.9rem !important;
    }
    
    .nav-links a {
        font-size: 0.8rem;
        padding: 0.5rem 0.6rem;
    }
    
    .section h2, 
    .about h2, 
    .skills-section h2, 
    .education h2, 
    .projects h2, 
    .certifications h2, 
    .contact h2 {
        font-size: 1.4rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-badge {
        max-width: 200px;
        margin: 0 auto;
    }
    
    /* Certification fixes for small screens */
    .certification-item {
        max-width: 280px;
        padding: 1.8rem 1.2rem;
        min-height: 260px;
    }
    
    .certification-item h3 {
        font-size: 1rem;
        min-height: 50px;
    }
    
    .cert-button {
        padding: 0.7rem 1.2rem;
        font-size: 0.85rem;
        min-width: 100px;
    }
    
    /* Contact section small screens */
    .contact-content {
        padding: 2rem 1rem;
        margin: 0 0.5rem;
    }
    
    .contact-info p {
        font-size: 1rem;
    }
    
    .contact-buttons .cta-button {
        max-width: 260px;
        padding: 0.9rem 1.2rem;
        font-size: 0.95rem;
    }
    
    /* Social links small screens */
    .social-links {
        gap: 1.2rem;
        margin-top: 2rem;
    }
    
    .social-links a {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
        padding: 0.7rem;
    }
}

/* Extra small devices */
@media screen and (max-width: 320px) {
    /* Certification cards for very small screens */
    .certification-item {
        max-width: 260px;
        padding: 1.5rem 1rem;
        min-height: 240px;
    }
    
    .certification-item h3 {
        font-size: 0.95rem;
        min-height: 45px;
        line-height: 1.2;
    }
    
    .cert-button {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
        min-width: 90px;
    }
    
    /* Contact section very small screens */
    .contact-content {
        padding: 1.5rem 0.8rem;
        margin: 0 0.3rem;
    }
    
    .contact-info p {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .contact-buttons .cta-button {
        max-width: 240px;
        padding: 0.8rem 1rem;
        font-size: 0.9rem;
    }
    
    /* Social links very small screens */
    .social-links {
        gap: 1rem;
        margin-top: 1.5rem;
    }
    
    .social-links a {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
        padding: 0.6rem;
    }
}

/* Landscape mode for mobile devices */
@media screen and (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 4rem 1rem 6rem;
    }
    
    .nav-links {
        bottom: 60px;
    }
    
    .navbar {
        padding: 0.5rem 1rem;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-name {
        font-size: 0.9rem !important;
    }
}

/* Initialize skill bars with JavaScript */
.skill-per[per="90"] { width: 90%; }
.skill-per[per="85"] { width: 85%; }
.skill-per[per="88"] { width: 88%; }
.skill-per[per="82"] { width: 82%; }
.skill-per[per="78"] { width: 78%; }

/* Animation classes */
.animate {
    animation: fadeInUp 0.8s ease forwards;
}

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

@keyframes navLinkFade {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0px);
    }
}

/* Add floating animation */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.floating {
    animation: float 6s ease-in-out infinite;
}

/* Add pulse animation for buttons */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(102, 126, 234, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Improve text selection */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}

/* More specific dark theme styles */
.dark-theme .navbar {
    background-color: var(--bg-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.dark-theme .logo,
.dark-theme .nav-links a,
.dark-theme .theme-toggle {
    color: var(--heading-color);
}

.dark-theme .about-text p,
.dark-theme .contact-info p,
.dark-theme .project-card p {
    color: var(--text-color);
}

.dark-theme .education-item,
.dark-theme .project-card,
.dark-theme .skill-category,
.dark-theme .certification-item {
    background-color: var(--card-bg);
    box-shadow: 0 5px 15px var(--card-shadow);
}

/* Fix box shadows in dark mode */
.dark-theme .card,
.dark-theme .about-image img {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
}

/* Better contrast for social links in dark mode */
.dark-theme .social-links a {
    color: var(--primary-color);
}

.dark-theme .social-links a:hover {
    color: var(--secondary-color);
}

/* Media Queries */
@media screen and (max-width: 768px) {
    .theme-toggle {
        margin-right: 20px;
    }
}