/* Modern Portfolio CSS - Professional & Engaging Design */

/* CSS Variables for Consistent Design System */
:root {
    /* Color Palette - Professional & Modern */
    --primary-color: #2563eb;        /* Deep Blue */
    --primary-hover: #1d4ed8;        /* Darker Blue */
    --secondary-color: #0ea5e9;      /* Cyan/Teal */
    --accent-color: #8b5cf6;         /* Purple Accent */
    --text-primary: #0f172a;         /* Dark Blue/Black */
    --text-secondary: #334155;       /* Slate Gray */
    --text-light: #f8fafc;           /* Off-White */
    --bg-primary: #ffffff;           /* Clean White */
    --bg-secondary: #f1f5f9;         /* Light Gray */
    --bg-dark: #0f172a;              /* Dark Background */
    --border-color: #e2e8f0;         /* Light Border */
    --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Typography */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-size-7xl: 4.5rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Breakpoints */
    --bp-mobile: 640px;
    --bp-tablet: 768px;
    --bp-desktop: 1024px;
    --bp-large: 1200px;
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f8fafc;
        --text-secondary: #94a3b8;
        --text-light: #0f172a;
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-dark: #0f172a;
        --border-color: #334155;
        --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
        --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
        --shadow-heavy: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
    }
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

/* Particles Background */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* Loading Screen */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loader-content {
    text-align: center;
    color: var(--text-light);
}

.loader-logo {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-6xl);
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    animation: logoPulse 2s infinite;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader-logo-img {
    height: 80px;
    width: auto;
    max-width: 300px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    animation: logoEntry 0.8s ease-out forwards, logoFloat 3s ease-in-out 0.8s infinite;
    border-radius: 10px;
    padding: 10px;
}

.loader-logo-img:hover {
    animation: logoEntry 0.8s ease-out forwards, logoFloat 2s ease-in-out 0.8s infinite;
}

.loader-text {
    font-size: var(--font-size-lg);
    font-weight: 400;
    margin-bottom: var(--spacing-xl);
    opacity: 0.8;
}

.loader-progress {
    width: 300px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    width: 0%;
    transition: width 0.3s ease;
}

@keyframes logoPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* Enhanced Logo Animations */
@keyframes logoEntry {
    0% {
        opacity: 0;
        transform: scale(0.3) rotate(-15deg);
        filter: brightness(0) invert(1) blur(10px);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.15) rotate(5deg);
        filter: brightness(0) invert(1) blur(2px);
    }
    75% {
        transform: scale(0.95) rotate(-2deg);
        filter: brightness(0) invert(1) blur(0);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
        filter: brightness(0) invert(1) blur(0);
    }
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    25% {
        transform: translateY(-8px) scale(1.02);
    }
    50% {
        transform: translateY(0) scale(1);
    }
    75% {
        transform: translateY(-4px) scale(1.01);
    }
}

@keyframes logoGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(255, 255, 255, 0.3),
                    0 0 40px rgba(255, 255, 255, 0.2),
                    0 0 60px rgba(255, 255, 255, 0.1);
    }
    50% {
        box-shadow: 0 0 30px rgba(255, 255, 255, 0.5),
                    0 0 60px rgba(255, 255, 255, 0.3),
                    0 0 90px rgba(255, 255, 255, 0.2);
    }
}

@keyframes logoShimmer {
    0% {
        background-position: -200% center;
    }
    100% {
        background-position: 200% center;
    }
}

@keyframes logoExit {
    0% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.2) rotate(10deg);
    }
    100% {
        opacity: 0;
        transform: scale(0.5) rotate(-20deg);
    }
}

@keyframes textReveal {
    0% {
        opacity: 0;
        transform: translateY(20px);
        letter-spacing: 10px;
    }
    100% {
        opacity: 0.8;
        transform: translateY(0);
        letter-spacing: normal;
    }
}

/* Skip loading for users with reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .loader-logo {
        animation: none;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Skip loading for faster connections (optional enhancement) */
body.loaded .loader {
    display: none !important;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-light);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: 2px;
    transition: transform var(--transition-fast);
    display: flex;
    align-items: center;
}

.nav-logo:hover {
    transform: scale(1.05);
}

.logo-img {
    height: 40px;
    width: auto;
    max-width: 150px;
    object-fit: contain;
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    transition: all var(--transition-fast);
    padding: var(--spacing-sm);
    border-radius: 6px;
}

.nav-link:hover {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

.nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-medium);
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}

/* Main Content */
main {
    margin-top: 70px;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    position: relative;
    z-index: 2;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-greeting {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.greeting-text {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

.typing-effect {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: 1px;
}

.cursor {
    animation: blink 0.8s infinite;
}

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

.hero-title {
    font-size: var(--font-size-7xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.name-highlight {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.name-sub {
    color: var(--text-secondary);
    font-weight: 400;
}

.hero-subtitle {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.subtitle-text {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    padding-left: var(--spacing-lg);
}

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

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3xl);
    max-width: 600px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-4xl);
}

.btn {
    padding: var(--spacing-lg) var(--spacing-2xl);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-base);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn::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 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
    background: linear-gradient(135deg, var(--primary-hover), #0284c7);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    max-width: 600px;
}

.stat-item {
    background: rgba(37, 99, 235, 0.05);
    padding: var(--spacing-lg);
    border-radius: 16px;
    text-align: center;
    border: 1px solid rgba(37, 99, 235, 0.1);
    transition: all var(--transition-normal);
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(37, 99, 235, 0.1);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease-out;
}

.hero-circle {
    position: relative;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-heavy);
    animation: pulse 4s infinite;
}

.circle-inner {
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.1);
}

.hero-avatar {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--bg-primary);
    box-shadow: var(--shadow-medium);
}

.circle-decoration {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

.hero-tech-icons {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.tech-icon {
    position: absolute;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    box-shadow: var(--shadow-medium);
    opacity: 1;
    transform: translateY(0);
    animation: float 3s ease-in-out infinite;
}

.tech-icon:nth-child(1) { top: 10%; left: 10%; animation-delay: 0s; }
.tech-icon:nth-child(2) { top: 20%; right: 15%; animation-delay: 1s; }
.tech-icon:nth-child(3) { bottom: 20%; left: 20%; animation-delay: 2s; }
.tech-icon:nth-child(4) { bottom: 10%; right: 10%; animation-delay: 3s; }

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    cursor: pointer;
    animation: bounce 2s infinite;
    z-index: 10;
    margin-top: var(--spacing-2xl);
}

.scroll-arrow {
    font-size: var(--font-size-xl);
    animation: arrowBounce 1s infinite;
}

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

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

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

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

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

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

@keyframes arrowBounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-5px); }
    60% { transform: translateY(-3px); }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.section-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    font-weight: 500;
}

/* About Section */
.about {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.about-content {
    animation: fadeInUp 0.8s ease-out;
}

.about-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.about-text {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.about-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.feature-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(37, 99, 235, 0.05);
    border-radius: 16px;
    border: 1px solid rgba(37, 99, 235, 0.1);
    transition: all var(--transition-normal);
}

.feature-item:hover {
    transform: translateY(-5px);
    background: rgba(37, 99, 235, 0.1);
}

.feature-item i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    padding: var(--spacing-md);
    border-radius: 12px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-item h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-item p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

.about-actions {
    display: flex;
    gap: var(--spacing-lg);
}

.about-image {
    position: relative;
    animation: fadeInRight 0.8s ease-out;
}

.image-frame {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
    transition: transform var(--transition-normal);
}

.image-frame:hover {
    transform: scale(1.02);
}

.image-frame img {
    width: 100%;
    height: auto;
    display: block;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.1), rgba(139, 92, 246, 0.3));
    opacity: 0;
    transition: opacity var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-frame:hover .image-overlay {
    opacity: 1;
}

.overlay-content {
    text-align: center;
    color: white;
    padding: var(--spacing-xl);
}

.overlay-content h4 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.overlay-content p {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

/* Skills Section */
.skills {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-3xl);
}

.skill-category {
    background: var(--bg-primary);
    padding: var(--spacing-2xl);
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.category-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.category-title i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    padding: var(--spacing-sm);
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.skill-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.skill-name {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    min-width: 150px;
}

.skill-progress {
    flex: 1;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    transition: width 1s ease-in-out;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

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

.skill-level {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 60px;
    text-align: right;
}

/* Skill Chart Container */
.skill-chart-container {
    margin-top: var(--spacing-4xl);
    text-align: center;
}

.chart-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
}

#skillChart {
    max-width: 400px;
    margin: 0 auto;
}

/* Projects Section */
.projects {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-3xl);
}

.project-card {
    background: var(--bg-primary);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    position: relative;
    cursor: pointer;
}

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

.project-card.active {
    box-shadow: 0 25px 50px -12px rgba(37, 99, 235, 0.25);
    border-color: var(--primary-color);
}

/* Project Image with Overlay */
.project-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

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

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, 
        rgba(15, 23, 42, 0) 0%, 
        rgba(15, 23, 42, 0.3) 50%, 
        rgba(15, 23, 42, 0.8) 100%);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--spacing-lg);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.project-category-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: fit-content;
}

.overlay-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: white;
    font-weight: 600;
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-normal);
}

.project-card:hover .overlay-content {
    opacity: 1;
    transform: translateY(0);
}

.view-details-text {
    font-size: var(--font-size-base);
}

.overlay-content i {
    animation: bounceUp 1.5s ease-in-out infinite;
}

@keyframes bounceUp {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* Project Content */
.project-content {
    padding: var(--spacing-md);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.project-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.project-tech {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.project-tech span {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.project-tech span:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.project-tech span i {
    font-size: var(--font-size-sm);
}

/* Slide-Up Panel */
.project-slide-panel {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
    border-top: 2px solid var(--primary-color);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.1);
}

.project-card.active .project-slide-panel {
    max-height: 500px;
    opacity: 1;
}

.panel-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    background: rgba(37, 99, 235, 0.1);
    border: none;
    border-radius: 50%;
    color: var(--primary-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
    z-index: 11;
}

.panel-close:hover {
    background: var(--primary-color);
    color: white;
    transform: rotate(90deg);
}

.panel-content {
    padding: var(--spacing-xl);
    padding-top: var(--spacing-2xl);
    max-height: 450px;
    overflow-y: auto;
}

.panel-content::-webkit-scrollbar {
    width: 6px;
}

.panel-content::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 3px;
}

.panel-content::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}

.panel-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.panel-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 20px;
    margin-bottom: var(--spacing-sm);
}

.panel-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.panel-body h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

.panel-body .responsibilities {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-lg) 0;
}

.panel-body .responsibilities li {
    position: relative;
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.6;
}

.panel-body .responsibilities li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: var(--font-size-lg);
}

.panel-body .responsibilities li strong {
    color: var(--text-primary);
    font-weight: 600;
}

.panel-skills {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.6;
    padding: var(--spacing-md);
    background: rgba(37, 99, 235, 0.05);
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.panel-skills strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* Fade-in Animation for Code and Development Projects */
.fade-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.show {
    opacity: 1;
    transform: translateY(0);
}

/* Code and Development Projects - Live Preview Styles */
.projects-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
}

.project-preview-container {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: 16px 16px 0 0;
    background: var(--bg-secondary);
}

.preview-live {
    position: relative;
    width: 100%;
    height: 100%;
}

.live-preview-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: white;
    transition: transform var(--transition-slow);
}

.project-card:hover .live-preview-iframe {
    transform: scale(1.02);
}

.preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, 
        rgba(15, 23, 42, 0) 0%, 
        rgba(15, 23, 42, 0.4) 70%, 
        rgba(15, 23, 42, 0.9) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: var(--spacing-xl);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.preview-action-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-base);
    border-radius: 50px;
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-normal);
    transform: translateY(20px);
}

.project-card:hover .preview-action-btn {
    transform: translateY(0);
}

.preview-action-btn:hover {
    transform: translateY(-3px) !important;
    box-shadow: var(--shadow-heavy);
}

.fallback-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Code and Development Projects Section - Modern Redesign */
.code-projects-section {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
    position: relative;
    overflow: hidden;
}

.code-projects-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(14, 165, 233, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.code-projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-3xl);
    position: relative;
    z-index: 1;
}

/* Modern Project Showcase Card */
.project-showcase-card {
    background: var(--bg-primary);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    display: flex;
    flex-direction: column;
}

.project-showcase-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.project-showcase-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px -12px rgba(37, 99, 235, 0.25);
    border-color: var(--primary-color);
}

.project-showcase-card:hover::before {
    transform: scaleX(1);
}

/* Project Number */
.project-number {
    position: absolute;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: rgba(37, 99, 235, 0.1);
    line-height: 1;
    z-index: 2;
    transition: all 0.4s ease;
}

.project-showcase-card:hover .project-number {
    color: rgba(37, 99, 235, 0.2);
    transform: scale(1.1);
}

/* Project Preview Wrapper */
.project-preview-wrapper {
    position: relative;
    width: 100%;
    height: 280px;
    overflow: hidden;
}

.project-preview-container {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--bg-secondary);
}

.preview-live {
    position: relative;
    width: 100%;
    height: 100%;
}

.live-preview-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: white;
    transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.project-showcase-card:hover .live-preview-iframe {
    transform: scale(1.05);
}

.preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, 
        rgba(15, 23, 42, 0) 0%, 
        rgba(15, 23, 42, 0.3) 50%, 
        rgba(15, 23, 42, 0.9) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: var(--spacing-xl);
    opacity: 0;
    transition: opacity 0.4s ease;
}

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

.overlay-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: white;
    font-weight: 600;
    transform: translateY(20px);
    transition: transform 0.4s ease;
}

.project-showcase-card:hover .overlay-content {
    transform: translateY(0);
}

.view-live-text {
    font-size: var(--font-size-base);
    letter-spacing: 0.05em;
}

.overlay-content i {
    font-size: var(--font-size-lg);
    animation: bounceRight 1.5s ease-in-out infinite;
}

@keyframes bounceRight {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(5px); }
}

.fallback-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Project Badge */
.project-badge {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 50px;
    box-shadow: var(--shadow-medium);
    z-index: 3;
    transition: all 0.3s ease;
}

.project-showcase-card:hover .project-badge {
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

.badge-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 50%;
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    transition: all 0.3s ease;
}

.project-showcase-card:hover .badge-icon {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.badge-text {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.project-showcase-card:hover .badge-text {
    color: white;
}

/* Project Info */
.project-info {
    padding: var(--spacing-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-showcase-card .project-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
    transition: color 0.3s ease;
}

.project-showcase-card:hover .project-title {
    color: var(--primary-color);
}

.project-meta {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.meta-date,
.meta-type {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.meta-date i,
.meta-type i {
    color: var(--primary-color);
    font-size: var(--font-size-sm);
}

.project-showcase-card .project-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    flex: 1;
}

/* Project Tech Stack */
.project-tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tech-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.tech-tag:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.tech-tag i {
    font-size: var(--font-size-base);
}

/* Project Actions */
.project-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: auto;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 2px solid transparent;
    cursor: pointer;
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: var(--shadow-medium);
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
    background: linear-gradient(135deg, var(--primary-hover), #0284c7);
}

.primary-btn i {
    font-size: var(--font-size-sm);
    transition: transform 0.3s ease;
}

.primary-btn:hover i {
    transform: translateX(3px);
}

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

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

/* Scroll Animation Classes */
[data-aos="fade-up"] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-up"].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design for Code Projects */
@media (max-width: 1024px) {
    .code-projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2xl);
    }
    
    .project-preview-wrapper {
        height: 240px;
    }
}

@media (max-width: 768px) {
    .code-projects-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .project-preview-wrapper {
        height: 220px;
    }
    
    .project-number {
        font-size: var(--font-size-4xl);
    }
    
    .project-info {
        padding: var(--spacing-lg);
    }
    
    .project-showcase-card .project-title {
        font-size: var(--font-size-xl);
    }
    
    .project-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .project-actions {
        flex-direction: column;
    }
    
    .action-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .code-projects-section {
        padding: var(--spacing-3xl) 0;
    }
    
    .project-preview-wrapper {
        height: 200px;
    }
    
    .project-badge {
        top: var(--spacing-md);
        right: var(--spacing-md);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .badge-text {
        display: none;
    }
    
    .project-tech-stack {
        gap: var(--spacing-xs);
    }
    
    .tech-tag {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
}

/* Responsive Design for Projects */
@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-image {
        height: 200px;
    }
    
    .project-slide-panel {
        position: fixed;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        max-height: 70vh;
        border-radius: 20px 20px 0 0;
    }
    
    .project-card.active .project-slide-panel {
        max-height: 70vh;
    }
    
    .panel-content {
        max-height: calc(70vh - 60px);
    }
}

/* Experience Section */
.experience {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 4px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -2px;
    border-radius: 2px;
    z-index: -1;
    pointer-events: none;
}

.timeline-item {
    position: relative;
    width: 100%;
    padding: var(--spacing-xl) 0;
}


/* Timeline dot for index.html structure */
.timeline-dot {
    position: absolute;
    width: 24px;
    height: 24px;
    background: var(--bg-primary);
    border: 4px solid var(--primary-color);
    top: var(--spacing-xl);
    border-radius: 50%;
    z-index: 10;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 0 4px var(--bg-primary);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 0;
    margin-right: calc(50% + 40px);
    text-align: right;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: calc(50% + 40px);
    margin-right: 0;
    text-align: left;
}

.timeline-content {
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: 16px;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    width: calc(50% - 40px);
}

.timeline-item:nth-child(odd):hover .timeline-content {
    transform: translateX(-10px);
    box-shadow: var(--shadow-heavy);
}

.timeline-item:nth-child(even):hover .timeline-content {
    transform: translateX(10px);
    box-shadow: var(--shadow-heavy);
}

.timeline-date {
    font-size: var(--font-size-sm);
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.timeline-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-company {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.timeline-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Contact Section */
.contact {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
}

.contact-info {
    animation: fadeInUp 0.8s ease-out;
}

.contact-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.contact-item:hover {
    transform: translateX(5px);
    background: rgba(37, 99, 235, 0.05);
}

.contact-item i {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    padding: var(--spacing-md);
    border-radius: 12px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item div span {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.contact-item div a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 50%;
    color: var(--primary-color);
    text-decoration: none;
    transition: all var(--transition-normal);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Contact Form */
.contact-form {
    animation: fadeInRight 0.8s ease-out;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: var(--spacing-4xl) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-3xl);
    align-items: center;
}

.footer-logo {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo-img {
    height: 50px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
}

.footer-logo p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 400;
}

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-copyright {
    text-align: right;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-normal);
    opacity: 0;
    pointer-events: none;
    z-index: 1000;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .footer-copyright {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::after {
        left: 30px;
    }
    
    .timeline-item::after {
        left: 30px;
        transform: translateX(-50%);
    }
    
    .timeline-dot {
        left: 30px;
        transform: translateX(-50%);
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 60px;
        margin-right: 0;
        text-align: left;
        width: calc(100% - 60px);
    }
    
    .timeline-item:nth-child(odd):hover .timeline-content,
    .timeline-item:nth-child(even):hover .timeline-content {
        transform: translateX(10px);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .hero-circle {
        width: 300px;
        height: 300px;
    }
    
    .circle-inner {
        width: 250px;
        height: 250px;
    }
    
    .hero-avatar {
        width: 200px;
        height: 200px;
    }
}

/* Advanced Animation Classes */
.gsap-fade-up {
    opacity: 0;
    transform: translateY(50px);
}

.gsap-fade-left {
    opacity: 0;
    transform: translateX(-50px);
}

.gsap-fade-right {
    opacity: 0;
    transform: translateX(50px);
}

.gsap-scale {
    opacity: 0;
    transform: scale(0.8);
}

.gsap-rotate {
    opacity: 0;
    transform: rotate(-10deg);
}

/* 3D Transform Effects */
.transform-3d {
    transform-style: preserve-3d;
    perspective: 1000px;
}

.rotate-3d {
    transition: transform 0.6s ease;
}

.rotate-3d:hover {
    transform: rotateY(15deg) rotateX(5deg);
}

/* Parallax Effects */
.parallax-slow {
    will-change: transform;
}

.parallax-medium {
    will-change: transform;
}

.parallax-fast {
    will-change: transform;
}

/* Interactive Elements */
.interactive-card {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.interactive-card:hover {
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-color);
}

/* Glow Effects */
.glow-effect {
    position: relative;
}

.glow-effect::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
    filter: blur(10px);
}

.glow-effect:hover::before {
    opacity: 0.7;
}

/* Text Gradient Animation */
.gradient-text-animated {
    background: linear-gradient(270deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Magnetic Effect */
.magnetic {
    transition: transform 0.3s ease;
}

/* Ripple Effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ripple:active::after {
    width: 300px;
    height: 300px;
}

/* Stagger Animation */
.stagger-item {
    opacity: 0;
    transform: translateY(30px);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-hover), #0284c7);
}

/* Selection Styling */
::selection {
    background: var(--primary-color);
    color: white;
}

/* Focus Styles */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Graphic Design Showcase Section */
.design-showcase {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
}

.design-showcase h2 {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.design-intro {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.design-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.design-card {
    background: var(--bg-primary);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
}

.design-card:hover {
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-color);
}

.design-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.design-card:hover img {
    transform: scale(1.05);
}

.design-card figcaption {
    padding: var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    background: var(--bg-primary);
}

/* Analytics Icon for Ad Projects */
.analytics-icon-wrapper {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 10;
}

.analytics-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    color: var(--primary-color);
    text-decoration: none;
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-normal);
}

.analytics-link:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

/* Design Modal */
.design-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

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

.modal-content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: scaleIn 0.3s ease;
}

@keyframes scaleIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
    z-index: 10001;
}

.modal-close:hover,
.modal-close:focus {
    color: #bbb;
    text-decoration: none;
}

/* Demo Modal */
.demo-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.demo-modal-content {
    background: var(--bg-primary);
    border-radius: 16px;
    width: 90%;
    max-width: 1200px;
    height: 80%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
    animation: scaleIn 0.3s ease;
}

.demo-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.demo-modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.demo-modal-close {
    font-size: 28px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.demo-modal-close:hover {
    color: var(--text-primary);
}

.demo-modal-body {
    flex: 1;
    overflow: hidden;
}

.demo-modal-body iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.demo-modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.demo-external-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.demo-external-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.demo-close-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.demo-close-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* View Design Section */
.view-design-section {
    background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
    padding: var(--spacing-3xl) 0;
}

.design-cta-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.design-cta-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(14, 165, 233, 0.1));
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 50px;
    border: 1px solid rgba(37, 99, 235, 0.2);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

.design-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: var(--spacing-xl) var(--spacing-3xl);
    font-size: var(--font-size-xl);
    font-weight: 700;
    border-radius: 60px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 10px 40px rgba(37, 99, 235, 0.4);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.design-cta-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s;
}

.design-cta-btn:hover::before {
    left: 100%;
}

.design-cta-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 20px 60px rgba(37, 99, 235, 0.5);
}

.design-cta-btn:active {
    transform: translateY(-2px) scale(1.02);
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    font-size: var(--font-size-lg);
    transition: all 0.3s ease;
}

.design-cta-btn:hover .btn-icon {
    transform: rotate(15deg) scale(1.1);
    background: rgba(255, 255, 255, 0.3);
}

.btn-text {
    flex: 1;
}

.btn-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    transition: all 0.3s ease;
}

.design-cta-btn:hover .btn-arrow {
    transform: translateX(5px);
}

.design-cta-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin: 0;
}

/* Responsive Design for CTA Button */
@media (max-width: 768px) {
    .design-cta-btn {
        padding: var(--spacing-lg) var(--spacing-2xl);
        font-size: var(--font-size-lg);
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .btn-icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-xl);
    }
    
    .btn-arrow {
        display: none;
    }
    
    .design-cta-subtitle {
        font-size: var(--font-size-sm);
        letter-spacing: 0.1em;
    }
}

@media (max-width: 480px) {
    .design-cta-btn {
        width: 90%;
        max-width: 350px;
        padding: var(--spacing-lg) var(--spacing-xl);
    }
    
    .design-cta-badge {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-md);
    }
}

/* Responsive Design for Graphic Design Section */
@media (max-width: 768px) {
    .design-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: var(--spacing-lg);
        padding: 0 var(--spacing-md);
    }
    
    .design-card img {
        height: 200px;
    }
    
    .design-showcase h2 {
        font-size: var(--font-size-3xl);
    }
    
    .demo-modal-content {
        width: 95%;
        height: 90%;
    }
    
    .view-design-section .btn {
        font-size: var(--font-size-base);
        padding: var(--spacing-md) var(--spacing-2xl);
    }
}

@media (max-width: 480px) {
    .design-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-close {
        top: 10px;
        right: 20px;
        font-size: 30px;
    }
    
    .view-design-section .btn {
        width: 90%;
        max-width: 300px;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .back-to-top,
    .particles-container {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}