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

:root {
    --primary-color: #00d4ff;
    --secondary-color: #ff6b35;
    --accent-color: #ffd700;
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --border-color: #333333;
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    --gradient-secondary: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    --gradient-accent: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    --shadow-primary: 0 10px 30px rgba(0, 212, 255, 0.3);
    --shadow-secondary: 0 5px 15px rgba(0, 0, 0, 0.3);
    
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
    --spacing-xxl: 2rem;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(ellipse at center, #1a1a1a 0%, #0a0a0a 100%);
}

#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

.loader {
    text-align: center;
}

.loader-text {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
}

.loader-quote {
    color: var(--text-secondary);
    font-size: 1rem;
    font-style: italic;
    margin-top: 1rem;
    opacity: 0.8;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.nav-logo {
    font-size: 1.3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 15px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
    position: relative;
    font-size: 0.9rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(0, 212, 255, 0.1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
    transform: translateX(-50%);
}

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

.hamburger {
    display: none;
}

.main-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    max-width: 1200px;
    margin: 0 auto;
    padding: 70px 20px 20px;
    gap: 25px;
    min-height: calc(100vh - 70px);
}

.sidebar {
    position: sticky;
    top: 90px;
    height: fit-content;
    max-height: calc(100vh - 100px);
}

.profile-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-secondary);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.mobile-info-toggle,
.mobile-info-dropdown {
    display: none;
}

@media (max-width: 1024px) {
    .mobile-info-toggle {
        display: flex !important;
        width: 40px;
        height: 40px;
        background: var(--gradient-primary);
        border: none;
        border-radius: var(--radius-md);
        color: white;
        cursor: pointer;
        align-items: center;
        justify-content: center;
        font-size: 1.2rem;
        transition: var(--transition-normal);
        z-index: 10;
    }
    
    .mobile-info-toggle:hover {
        transform: scale(1.1);
        box-shadow: var(--shadow-primary);
    }
    
    .mobile-info-toggle.active {
        transform: rotate(180deg);
    }
    
    .mobile-info-dropdown {
        display: block !important;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        margin-top: 10px;
        padding: 15px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        z-index: 100;
        box-shadow: var(--shadow-secondary);
    }
    
    .mobile-info-dropdown.active {
        opacity: 1 !important;
        visibility: visible !important;
        transform: translateY(0) !important;
    }
    
    .mobile-contact-info {
        margin-bottom: 15px;
    }
    
    .mobile-contact-item {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 10px;
        padding: 8px;
        border-radius: var(--radius-sm);
        transition: var(--transition-normal);
    }
    
    .mobile-contact-item:hover {
        background: rgba(0, 212, 255, 0.05);
    }
    
    .mobile-social-links {
        display: flex;
        justify-content: center;
        gap: 10px;
        margin-bottom: 15px;
    }
    
    .mobile-download-btn {
        width: 100%;
        background: var(--gradient-primary);
        color: white;
        border: none;
        padding: 10px;
        border-radius: var(--radius-md);
        font-size: 0.9rem;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition-normal);
    }
    
    .mobile-download-btn:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-primary);
    }
}

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

.profile-image-container {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 10px;
}

.profile-image {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-color);
    box-shadow: var(--shadow-primary);
    transition: var(--transition-normal);
}

.profile-image:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.4);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(0, 255, 136, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 255, 136, 0); }
}

.profile-info {
    text-align: center;
    margin-bottom: 10px;
}

.profile-name {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 3px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.profile-role {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    min-height: 1rem;
}

.typing-text {
    color: var(--primary-color);
}

.cursor {
    animation: blink 1s infinite;
    color: var(--primary-color);
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.profile-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
    margin: 10px 0;
}

.contact-info {
    margin-bottom: 10px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
}

.contact-item:hover {
    background: rgba(0, 212, 255, 0.05);
    transform: translateX(5px);
}

.contact-icon {
    width: 30px;
    height: 30px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.8rem;
}

.contact-details {
    flex: 1;
}

.contact-label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 1px;
}

.contact-value {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

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

.social-links {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 10px;
}

.social-link {
    width: 35px;
    height: 35px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
    z-index: -1;
}

.social-link:hover::before {
    left: 0;
}

.social-link:hover {
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-primary);
}

.social-link[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: -35px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    border: 1px solid var(--border-color);
}

.download-cv-btn {
    width: 100%;
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.download-cv-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
    background: linear-gradient(135deg, #0099cc 0%, #00d4ff 100%);
}

.main-content {
    position: relative;
    padding: 0 15px;
}

.content-section {
    display: block;
    animation: fadeInUp 0.6s ease;
    margin-bottom: 30px;
}

.content-section.active {
    display: block;
}

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

.section-header {
    margin-bottom: 15px;
    text-align: center;
    display: none;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 5px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    position: relative;
}

.section-subtitle::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 2px;
    background: var(--gradient-primary);
}

.about-content {
    margin-bottom: 30px;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
}

.code-intro-section {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 40px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
    overflow: hidden;
    min-height: 350px;
    display: flex;
    align-items: center;
}

.code-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 30px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: rgba(0, 212, 255, 0.25);
    line-height: 1.8;
    overflow: hidden;
    pointer-events: none;
}

.code-line {
    white-space: pre;
    animation: fadeInCode 0.5s ease forwards;
    opacity: 0;
}

.code-line:nth-child(1) { animation-delay: 0.1s; }
.code-line:nth-child(2) { animation-delay: 0.2s; }
.code-line:nth-child(3) { animation-delay: 0.3s; }
.code-line:nth-child(4) { animation-delay: 0.4s; }
.code-line:nth-child(5) { animation-delay: 0.5s; }
.code-line:nth-child(6) { animation-delay: 0.6s; }
.code-line:nth-child(7) { animation-delay: 0.7s; }
.code-line:nth-child(8) { animation-delay: 0.8s; }
.code-line:nth-child(9) { animation-delay: 0.9s; }
.code-line:nth-child(10) { animation-delay: 1s; }
.code-line:nth-child(11) { animation-delay: 1.1s; }
.code-line:nth-child(12) { animation-delay: 1.2s; }

@keyframes fadeInCode {
    to {
        opacity: 1;
    }
}

.code-keyword {
    color: rgba(255, 107, 53, 0.5);
    font-weight: 600;
}

.code-class {
    color: rgba(255, 215, 0, 0.5);
    font-weight: 600;
}

.code-property {
    color: rgba(0, 212, 255, 0.5);
}

.code-string {
    color: rgba(0, 255, 136, 0.5);
}

.code-function {
    color: rgba(255, 215, 0, 0.5);
}

.intro-overlay {
    position: relative;
    z-index: 2;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 35px;
    border-radius: var(--radius-md);
    border: 1px solid var(--primary-color);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
    max-width: 600px;
}

.intro-overlay h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.intro-overlay p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-primary);
}

.quick-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-box {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 25px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: var(--transition-normal);
}

.stat-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.stat-info h4 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.stat-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.services-section {
    margin-top: 30px;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
}

.services-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 25px;
    text-align: center;
    color: var(--text-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.service-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 25px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-slow);
}

.service-card:hover::before {
    left: 0;
}

.service-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-secondary);
    border-color: var(--primary-color);
}

.service-card-special {
    position: relative;
}

.service-card-special .explore-btn {
    display: none;
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-secondary);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition-normal);
    white-space: nowrap;
    z-index: 10;
}

.service-card-special:hover .explore-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    animation: slideUp 0.3s ease forwards;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.service-card-special:hover .service-content {
    padding-bottom: 50px;
}

.explore-btn:hover {
    background: linear-gradient(135deg, #f7931e 0%, #ff6b35 100%);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.4);
}

.service-icon {
    width: 55px;
    height: 55px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    font-size: 1.4rem;
    color: white;
    transition: var(--transition-normal);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.service-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.service-content p {
    color: var(--text-secondary);
    line-height: 1.5;
    font-size: 0.9rem;
}

.resume-content {
    display: grid;
    gap: 30px;
}

.resume-section-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--text-primary);
}

.resume-section-title i {
    color: var(--primary-color);
    font-size: 1.4rem;
}

.education-section {
    margin-bottom: 30px;
}

.education-grid {
    display: grid;
    gap: 20px;
}

.education-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 25px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.education-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transition: var(--transition-normal);
}

.education-card:hover::before {
    transform: scaleY(1);
}

.education-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-secondary);
    border-color: var(--primary-color);
}

.education-header {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-bottom: 20px;
}

.education-icon {
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 153, 204, 0.1) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
    transition: var(--transition-normal);
}

.education-card:hover .education-icon {
    background: var(--gradient-primary);
    color: white;
    transform: scale(1.1);
}

.education-info h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.institution {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.education-date {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-tertiary);
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.education-date i {
    font-size: 0.8rem;
}

.education-details {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

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

.detail-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.detail-value {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 600;
}

.experience-section {
    margin-top: 30px;
}

.experience-card-large {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 30px;
    border: 1px solid var(--border-color);
    display: flex;
    gap: 25px;
    align-items: flex-start;
    transition: var(--transition-normal);
}

.experience-card-large:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-secondary);
    border-color: var(--secondary-color);
}

.experience-icon-large {
    width: 70px;
    height: 70px;
    background: var(--gradient-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    flex-shrink: 0;
    transition: var(--transition-normal);
}

.experience-card-large:hover .experience-icon-large {
    transform: scale(1.1) rotate(5deg);
}

.experience-content-large h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.experience-content-large p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 15px;
}

.experience-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.tag {
    background: var(--bg-tertiary);
    color: var(--primary-color);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}
    color: white;
    flex-shrink: 0;
}

.experience-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.experience-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.skills-content {
    padding: 0;
}

.skills-header {
    margin-bottom: 25px;
}

.skills-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 5px;
    color: var(--text-primary);
}

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 20px;
    max-width: 100%;
}

.skill-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 20px 15px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.skill-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-slow);
}

.skill-item:hover::before {
    left: 0;
}

.skill-item:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
}

.skill-icon {
    width: 45px;
    height: 45px;
    margin-bottom: 10px;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.skill-item:hover .skill-icon {
    transform: scale(1.2);
}

.skill-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
}

.skill-item[data-skill="java"] .skill-icon { color: #f89820; }
.skill-item[data-skill="python"] .skill-icon { color: #3776ab; }
.skill-item[data-skill="typescript"] .skill-icon { color: #3178c6; }
.skill-item[data-skill="sql"] .skill-icon { color: #00758f; }
.skill-item[data-skill="html"] .skill-icon { color: #e34f26; }
.skill-item[data-skill="css"] .skill-icon { color: #1572b6; }
.skill-item[data-skill="js"] .skill-icon { color: #f7df1e; }
.skill-item[data-skill="git"] .skill-icon { color: #f05032; }
.skill-item[data-skill="github"] .skill-icon { color: #ffffff; }
.skill-item[data-skill="spring"] .skill-icon { color: #6db33f; }
.skill-item[data-skill="springboot"] .skill-icon { color: #6db33f; }
.skill-item[data-skill="mern"] .skill-icon { color: #3fa037; }

.project-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 10px 15px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 0.9rem;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.project-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    position: relative;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-secondary);
    border-color: var(--primary-color);
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

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

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

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

.project-links {
    display: flex;
    gap: 15px;
}

.project-link {
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: var(--transition-normal);
}

.project-link:hover {
    transform: scale(1.1);
    background: var(--gradient-secondary);
}

.project-info {
    padding: 20px;
}

.project-info h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.project-info p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 15px;
}

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

.tech-tag {
    background: var(--bg-tertiary);
    color: var(--primary-color);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--primary-color);
}

.projects-status {
    text-align: center;
    padding: 25px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    margin-top: 20px;
}

.status-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.status-indicator i {
    color: var(--secondary-color);
    animation: spin 2s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.contact-content {
    display: grid;
    gap: var(--spacing-xxl);
}

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

.contact-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition-normal);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-secondary);
    border-color: var(--primary-color);
}

.contact-card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 1.5rem;
    color: white;
}

.contact-card-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

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

.contact-form-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 30px;
    border: 1px solid var(--border-color);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.input-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 15px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-normal);
    font-family: var(--font-primary);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-muted);
}

.submit-btn {
    width: 100%;
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 15px 20px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
    background: linear-gradient(135deg, #0099cc 0%, #00d4ff 100%);
}

.contact-social-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 30px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
    text-align: center;
}

.contact-social-section h4 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.contact-social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.contact-social-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-normal);
}

.contact-social-link:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.contact-social-link i {
    font-size: 1.2rem;
}

.contact-download-btn {
    background: var(--gradient-secondary);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.contact-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

@media (min-width: 769px) {
    .contact-social-section {
        display: none;
    }
}

@media (max-width: 768px) {
    .contact-social-links {
        flex-direction: column;
        align-items: stretch;
    }
    
    .contact-social-link {
        justify-content: center;
    }
}

@media (max-width: 1024px) {
    .main-container {
        grid-template-columns: 1fr;
        padding: 70px 15px 70px;
        gap: 15px;
    }
    
    .sidebar {
        position: static;
        order: -1;
    }
    
    .profile-card {
        padding: 20px;
        display: grid;
        grid-template-columns: auto 1fr auto;
        gap: 15px;
        align-items: center;
        text-align: left;
        border-radius: var(--radius-xl);
        margin: 0 5px;
        position: relative;
    }
    
    .profile-image-container {
        margin: 0;
        width: 80px;
        height: 80px;
    }
    
    .profile-info {
        margin: 0;
        text-align: left;
    }
    
    .profile-name {
        font-size: 1.4rem;
        margin-bottom: 2px;
    }
    
    .profile-role {
        font-size: 0.9rem;
    }
    
    .contact-info {
        display: none;
    }
    
    .profile-divider {
        display: none;
    }
    
    .social-links {
        display: none;
    }
    
    .download-cv-btn {
        display: none;
    }
    
    .mobile-info-toggle {
        display: flex !important;
        width: 40px;
        height: 40px;
        background: var(--gradient-primary);
        border: none;
        border-radius: var(--radius-md);
        color: white;
        cursor: pointer;
        align-items: center;
        justify-content: center;
        font-size: 1.2rem;
        transition: var(--transition-normal);
    }
    
    .mobile-info-dropdown {
        display: block !important;
    }
    
    .mobile-info-toggle:hover {
        transform: scale(1.1);
        box-shadow: var(--shadow-primary);
    }
    
    .mobile-info-toggle.active {
        transform: rotate(180deg);
    }
    
    .mobile-info-dropdown {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        margin-top: 10px;
        padding: 15px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        z-index: 100;
        display: block !important;
    }
    
    .mobile-info-dropdown.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .mobile-contact-info {
        margin-bottom: 15px;
    }
    
    .mobile-contact-item {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 10px;
        padding: 8px;
        border-radius: var(--radius-sm);
        transition: var(--transition-normal);
    }
    
    .mobile-contact-item:hover {
        background: rgba(0, 212, 255, 0.05);
    }
    
    .mobile-social-links {
        display: flex;
        justify-content: center;
        gap: 10px;
        margin-bottom: 15px;
    }
    
    .mobile-download-btn {
        width: 100%;
        background: var(--gradient-primary);
        color: white;
        border: none;
        padding: 10px;
        border-radius: var(--radius-md);
        font-size: 0.9rem;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition-normal);
    }
    
    .mobile-download-btn:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-primary);
    }
    
    .section-header {
        display: block;
        margin-bottom: 15px;
        padding: 0 8px;
    }
    
    .section-title {
        font-size: 1.3rem;
        word-wrap: break-word;
    }
    
    .section-subtitle {
        font-size: 0.75rem;
    }
    
    .navbar {
        top: auto;
        bottom: 15px;
        left: 50%;
        transform: translateX(-50%);
        width: calc(100% - 30px);
        max-width: 400px;
        height: 65px;
        border-radius: 50px;
        border: 1px solid var(--border-color);
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(10px);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    }
    
    .nav-container {
        height: 65px;
        padding: 0 15px;
    }
    
    .nav-logo {
        display: none;
    }
    
    .nav-menu {
        width: 100%;
        justify-content: space-around;
        gap: 0;
    }
    
    .nav-link {
        flex-direction: column;
        padding: 10px 8px;
        font-size: 0.7rem;
        min-width: 60px;
        text-align: center;
        border-radius: 12px;
    }
    
    .nav-link i {
        font-size: 1.3rem;
        margin-bottom: 2px;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .nav-link.active {
        background: rgba(0, 212, 255, 0.15);
        border-radius: var(--radius-sm);
    }
}

@media (max-width: 768px) {
    .main-container {
        padding: 15px 0 95px;
    }
    
    .profile-card {
        margin: 0;
        padding: 18px;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-header {
        display: block;
        margin-bottom: 15px;
        padding: 0 10px;
    }
    
    .section-subtitle {
        font-size: 0.75rem;
    }
    
    .code-intro-section {
        padding: 15px 10px;
        margin: 0 0 15px 0;
        display: block;
        width: 100%;
        box-sizing: border-box;
        min-height: auto;
    }
    
    .code-background {
        position: relative;
        padding: 10px;
        font-size: 0.6rem;
        line-height: 1.5;
        overflow: hidden;
        display: block;
        height: auto;
        margin-bottom: 10px;
        width: 100%;
        box-sizing: border-box;
    }
    
    .code-line {
        white-space: pre;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 100%;
    }
    
    .intro-overlay {
        position: relative;
        padding: 15px 10px;
        max-width: 100%;
        width: 100%;
        box-sizing: border-box;
    }
    
    .intro-overlay h3 {
        font-size: 1.3rem;
        margin-bottom: 10px;
    }
    
    .intro-overlay p {
        font-size: 0.9rem;
        line-height: 1.6;
    }
    
    .quick-stats {
        grid-template-columns: 1fr;
        gap: 15px;
        margin: 0 0 20px 0;
        width: 100%;
        box-sizing: border-box;
    }
    
    .stat-box {
        padding: 18px;
        gap: 15px;
        width: 100%;
        box-sizing: border-box;
    }
    
    .stat-icon {
        width: 48px;
        height: 48px;
        font-size: 1.3rem;
    }
    
    .stat-info h4 {
        font-size: 1.4rem;
    }
    
    .stat-info p {
        font-size: 0.85rem;
    }
    
    .services-section {
        width: 100%;
        box-sizing: border-box;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        margin: 0;
        width: 100%;
        box-sizing: border-box;
    }
    
    .service-card {
        margin: 0;
        padding: 20px;
        width: 100%;
        box-sizing: border-box;
    }
    
    .service-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
        margin-bottom: 15px;
    }
    
    .service-content h4 {
        font-size: 1.05rem;
        margin-bottom: 10px;
    }
    
    .service-content p {
        font-size: 0.9rem;
        line-height: 1.6;
    }
    
    .service-card-special .explore-btn {
        position: static;
        transform: none;
        display: flex;
        margin-top: 15px;
        justify-content: center;
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .service-card-special:hover .service-content {
        padding-bottom: 0;
    }
    
    .education-card {
        margin: 0 8px 15px;
        padding: 20px;
    }
    
    .education-header {
        flex-direction: column;
        gap: 15px;
        margin-bottom: 15px;
    }
    
    .education-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .education-info h4 {
        font-size: 1rem;
        line-height: 1.4;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    
    .institution {
        font-size: 0.85rem;
        line-height: 1.4;
    }
    
    .education-date {
        font-size: 0.75rem;
        padding: 4px 10px;
    }
    
    .education-details {
        gap: 10px;
        padding-top: 15px;
    }
    
    .experience-card-large {
        flex-direction: column;
        padding: 20px;
        margin: 0 8px;
        gap: 18px;
    }
    
    .experience-icon-large {
        width: 55px;
        height: 55px;
        font-size: 1.7rem;
    }
    
    .experience-content-large h4 {
        font-size: 1.15rem;
        margin-bottom: 10px;
    }
    
    .experience-content-large p {
        font-size: 0.95rem;
        margin-bottom: 12px;
    }
    
    .experience-tags {
        gap: 10px;
    }
    
    .tag {
        padding: 6px 14px;
        font-size: 0.85rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        margin: 0;
        width: 100%;
        box-sizing: border-box;
    }
    
    .service-card {
        margin: 0;
        padding: 20px;
        width: 100%;
        box-sizing: border-box;
    }
    
    .service-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
        margin-bottom: 15px;
    }
    
    .service-content h4 {
        font-size: 1.05rem;
        margin-bottom: 10px;
    }
    
    .service-content p {
        font-size: 0.9rem;
        line-height: 1.6;
    }
    
    .service-card-special .explore-btn {
        position: static;
        transform: none;
        display: flex;
        margin-top: 15px;
        justify-content: center;
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .service-card-special:hover .service-content {
        padding-bottom: 0;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
        gap: 12px;
        margin: 0 8px;
    }
    
    .skill-item {
        padding: 12px 8px;
        min-height: 85px;
    }
    
    .skill-icon {
        width: 35px;
        height: 35px;
        font-size: 1.5rem;
        margin-bottom: 6px;
    }
    
    .skill-name {
        font-size: 0.7rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        margin: 0 8px;
        gap: 12px;
    }
    
    .services-section {
        margin: 0;
        width: 100%;
        box-sizing: border-box;
    }
    
    .timeline-section {
        margin: 0 8px;
        padding: 20px;
    }
    
    .timeline {
        padding-left: 20px;
    }
    
    .timeline::before {
        left: 6px;
    }
    
    .timeline-dot {
        left: -1px;
        width: 14px;
        height: 14px;
        top: 3px;
    }
    
    .timeline-item {
        padding-left: 20px;
        margin-bottom: 20px;
    }
    
    .contact-content > * {
        margin: 0 8px;
    }
}

@media (max-width: 480px) {
    .main-container {
        padding: 12px 10px 75px;
    }
    
    .profile-card {
        padding: 15px;
        gap: 12px;
        margin: 0 5px;
    }
    
    .profile-image-container {
        width: 70px;
        height: 70px;
    }
    
    .profile-name {
        font-size: 1.2rem;
    }
    
    .profile-role {
        font-size: 0.8rem;
    }
    
    .section-title {
        font-size: 1.3rem;
    }
    
    .intro-text {
        font-size: 0.9rem;
    }
    
    .service-card {
        padding: 15px;
        margin: 0;
        width: 100%;
        box-sizing: border-box;
    }
    
    .services-grid {
        margin: 0;
        gap: 10px;
        width: 100%;
        box-sizing: border-box;
    }
    
    .skills-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 10px;
        margin: 0 5px;
    }
    
    .skill-item {
        padding: 10px 5px;
        min-height: 75px;
    }
    
    .skill-icon {
        width: 30px;
        height: 30px;
        font-size: 1.3rem;
        margin-bottom: 4px;
    }
    
    .skill-name {
        font-size: 0.65rem;
    }
    
    .nav-link {
        font-size: 0.65rem;
        padding: 6px 2px;
        min-width: 50px;
    }
    
    .nav-link i {
        font-size: 1rem;
    }
    
    .stats-grid {
        margin: 0 5px;
        gap: 8px;
    }
    
    .stat-item {
        padding: 10px 6px;
    }
    
    .projects-grid {
        margin: 0 5px;
        gap: 10px;
    }
    
    .about-text {
        margin: 0 5px;
    }
    
    .services-section {
        margin: 0 5px;
    }
    
    .timeline-section {
        margin: 0 5px;
    }
    
    .contact-content > * {
        margin: 0 5px;
    }
    
    .mobile-info-toggle {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
}

@media (max-width: 360px) {
    .main-container {
        padding: 10px 8px 75px;
    }
    
    .profile-card {
        padding: 12px;
        margin: 0 3px;
    }
    
    .services-grid,
    .skills-grid,
    .stats-grid,
    .projects-grid {
        margin: 0 3px;
    }
    
    .about-text,
    .services-section,
    .timeline-section,
    .contact-content > * {
        margin: 0 3px;
    }
    
    .skills-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .nav-link {
        font-size: 0.6rem;
        min-width: 45px;
    }
}

.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp 0.6s ease;
}

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

::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #0099cc 0%, #00d4ff 100%);
}

::selection {
    background: rgba(0, 212, 255, 0.3);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(0, 212, 255, 0.3);
    color: var(--text-primary);
}