:root {
    --primary: #2563eb;
    --primary-light: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary: #1e293b;
    --accent: #06b6d4;
    --success: #10b981;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --border-radius: 12px;
    --shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 15px 30px rgba(0, 0, 0, 0.12);
    --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--secondary);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: #fefefe;
}

h1, h2, h3, h4, h5 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

.section-padding {
    padding: 6rem 0;
}

.section-title {
    margin-bottom: 3.5rem;
    position: relative;
    padding-bottom: 15px;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
}

.text-center .section-title::after {
    left: 50%;
    transform: translateX(-50%);
}

/* Navigation */
.navbar {
    padding: 1.5rem 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.navbar.scrolled {
    padding: 1.2rem 0;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--secondary);
    display: flex;
    align-items: center;
}

.navbar-brand span {
    color: var(--primary);
}

.nav-link {
    font-weight: 500;
    margin: 0 0.5rem;
    color: var(--secondary) !important;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary) !important;
}

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

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

/* Home Section */
.home {
    padding: 10rem 0 6rem;
    background: linear-gradient(135deg, #f6f9ff 0%, #f0f7ff 100%);
    position: relative;
    overflow: hidden;
}

.home::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, rgba(37, 99, 235, 0) 70%);
    top: -150px;
    right: -150px;
    z-index: 0;
}

.profile-container {
    position: relative;
    z-index: 2;
    text-align: center;
}

.profile-img-wrapper {
    width: 280px;
    height: 280px;
    margin: 0 auto 2.5rem;
    position: relative;
}

.profile-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 8px solid white;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    position: relative;
    z-index: 2;
}

.profile-img-wrapper::before {
    content: '';
    position: absolute;
    width: 110%;
    height: 110%;
    top: -5%;
    left: -5%;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    z-index: 1;
    animation: rotate 20s linear infinite;
}

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

.home-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.home-title span {
    color: var(--primary);
}

.home-subtitle {
    font-size: 1.4rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.home-stats {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin: 2.5rem 0;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    min-width: 150px;
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

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

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2.5rem;
}

.btn-primary {
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    border: none;
    padding: 0.9rem 2.2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 0.9rem 2.2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

/* Experience Section */
.experience {
    background-color: white;
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    height: 100%;
    width: 3px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 4rem;
    width: 50%;
    padding-right: 60px;
}

.timeline-item:nth-child(even) {
    margin-left: auto;
    padding-right: 0;
    padding-left: 60px;
}

.timeline-item:nth-child(even) .timeline-content {
    text-align: right;
}

.timeline-item:nth-child(even) .timeline-icon {
    right: -30px;
    left: auto;
}

.timeline-content {
    background: white;
    border-radius: var(--border-radius);
    padding: 2.2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.timeline-content:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.timeline-icon {
    position: absolute;
    top: 30px;
    left: -30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    border: 5px solid white;
    box-shadow: 0 0 0 5px rgba(37, 99, 235, 0.1);
    z-index: 2;
}

.timeline-date {
    display: inline-block;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.timeline-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-company {
    font-size: 1.2rem;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 1rem;
}

/* Skills Section */
.skills {
    background: linear-gradient(135deg, #f6f9ff 0%, #f0f7ff 100%);
}

.skills-container {
    max-width: 900px;
    margin: 0 auto;
}

.skill-category {
    background: white;
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 2.5rem;
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.category-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.category-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.skill-item {
    margin-bottom: 1.8rem;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.skill-name {
    font-weight: 600;
}

.skill-percent {
    color: var(--primary);
    font-weight: 700;
}

.skill-bar-container {
    height: 10px;
    background-color: var(--gray-light);
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}

.skill-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 5px;
    width: 0;
    transition: width 1.5s ease-in-out;
    position: relative;
    overflow: hidden;
}

.skill-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Education Section */
.education {
    background-color: white;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.education-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border-top: 5px solid var(--primary);
}

.education-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.education-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), transparent);
    opacity: 0;
    transition: var(--transition);
}

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

.education-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.education-degree {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.education-school {
    font-size: 1.2rem;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.education-year {
    display: inline-block;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1.2rem;
}

.education-details {
    color: var(--gray);
    margin-bottom: 1.5rem;
}

.education-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.education-badge {
    display: inline-block;
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
}

.contact .section-title::after {
    background: linear-gradient(90deg, var(--accent), white);
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--shadow);
}

.form-control {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 0.9rem 1.2rem;
    color: white;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
    color: white;
}

.form-control::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.contact-info {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--shadow);
    height: 100%;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    margin-right: 1.2rem;
    flex-shrink: 0;
}

/* Footer */
.footer {
    background-color: #0f172a;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    font-weight: 700;
    font-size: 1.8rem;
}

.footer-logo span {
    color: var(--primary);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

/* Responsive */
@media (max-width: 992px) {
    .home-title {
        font-size: 2.5rem;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item, .timeline-item:nth-child(even) {
        width: 100%;
        padding-left: 80px;
        padding-right: 0;
    }
    
    .timeline-item:nth-child(even) .timeline-content {
        text-align: left;
    }
    
    .timeline-icon {
        left: 20px;
    }
    
    .timeline-item:nth-child(even) .timeline-icon {
        left: 20px;
        right: auto;
    }
}

@media (max-width: 768px) {
    .section-padding {
        padding: 4rem 0;
    }
    
    .home {
        padding: 8rem 0 4rem;
    }
    
    .home-title {
        font-size: 2.2rem;
    }
    
    .home-stats {
        gap: 1rem;
    }
    
    .stat-item {
        min-width: 130px;
        padding: 1.2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .education-grid {
        grid-template-columns: 1fr;
    }
}