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

/* ===================================
   Scroll Progress Bar
   =================================== */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--accent-gradient);
    z-index: 9999;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

/* ===================================
   Back to Top Button
   =================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    box-shadow: var(--glow);
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.6);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

:root {
    /* Color Palette */
    --bg-primary: #0a0e27;
    --bg-secondary: #0f1729;
    --bg-tertiary: #1a1f3a;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --accent-primary: #3b82f6;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --accent-gradient-hover: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --success: #10b981;
    --border-color: rgba(255, 255, 255, 0.1);
    --border-color-hover: rgba(59, 130, 246, 0.3);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3);
    --glow: 0 0 20px rgba(59, 130, 246, 0.3);
    --glow-strong: 0 0 40px rgba(59, 130, 246, 0.5), 0 0 80px rgba(59, 130, 246, 0.3);
}

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

body {
    font-family: var(--font-primary);
    background: linear-gradient(180deg, #0a0e27 0%, #050815 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Ambient background effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.brand-bracket {
    color: var(--accent-primary);
}

.brand-text {
    color: var(--text-primary);
    margin: 0 0.25rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--text-primary);
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 8rem 0 4rem;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-text {
    max-width: 900px;
}

.hero-greeting {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--accent-primary);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease;
}

.code-bracket {
    color: var(--accent-secondary);
    margin-right: 0.5rem;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.name-highlight {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.8s ease 0.4s both;
    min-height: 2.5rem;
}

.typing-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.cursor {
    color: var(--accent-primary);
    animation: blink 1s infinite;
    font-weight: 400;
}

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

.hero-description {
    font-size: 1.1rem;
    color: var(--text-tertiary);
    max-width: 700px;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0.75rem;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    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 0.6s ease;
}

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

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 35px rgba(59, 130, 246, 0.6);
    background: var(--accent-gradient-hover);
}

.btn-primary:active {
    transform: translateY(-1px) scale(1.01);
}

.btn-secondary {
    background: rgba(59, 130, 246, 0.05);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(59, 130, 246, 0.15);
    border-color: var(--accent-secondary);
    color: var(--accent-secondary);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.3);
}

.btn-secondary:active {
    transform: translateY(-1px) scale(1.01);
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
    animation: fadeInUp 0.8s ease 1s both;
}

.stat {
    display: flex;
    flex-direction: column;
    position: relative;
    padding: 1rem 1.5rem;
    background: rgba(59, 130, 246, 0.05);
    border-radius: 0.5rem;
    border: 1px solid rgba(59, 130, 246, 0.2);
    transition: all var(--transition-base);
}

.stat:hover {
    transform: translateY(-3px);
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--accent-primary);
    box-shadow: 0 5px 20px rgba(59, 130, 246, 0.2);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    animation: fadeIn 1s ease 1.2s both;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--accent-primary);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 0; transform: translateX(-50%) translateY(0); }
    50% { opacity: 1; transform: translateX(-50%) translateY(8px); }
}

.scroll-text {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

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

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

/* ===================================
   About Section
   =================================== */
.about {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

.section-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.title-number {
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 600;
}

.title-text {
    white-space: nowrap;
    position: relative;
}

.title-text::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60%;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.title-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--border-color), transparent);
    position: relative;
    overflow: hidden;
}

.title-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, 
        transparent, 
        rgba(59, 130, 246, 0.8), 
        rgba(139, 92, 246, 0.8), 
        transparent);
    animation: shimmer 4s infinite ease-in-out;
    filter: blur(2px);
}

@keyframes shimmer {
    0% { left: -100%; opacity: 0.5; }
    50% { opacity: 1; }
    100% { left: 100%; opacity: 0.5; }
}

.about-content {
    max-width: 900px;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.tech-stack {
    margin-top: 3rem;
}

.tech-stack h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
}

.tech-item {
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.tech-item:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

/* ===================================
   Projects Section
   =================================== */
.projects {
    padding: var(--spacing-xl) 0;
    background: var(--bg-primary);
}

.project {
    position: relative;
    margin-bottom: 5rem;
    padding: 3rem;
    background: linear-gradient(135deg, rgba(15, 23, 41, 0.95) 0%, rgba(10, 14, 39, 0.95) 100%);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.project::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.project::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    pointer-events: none;
}

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

.project:hover::after {
    width: 300px;
    height: 300px;
}

.project:hover {
    border-color: var(--border-color-hover);
    box-shadow: 0 20px 60px rgba(59, 130, 246, 0.15), 0 0 40px rgba(59, 130, 246, 0.1);
    transform: none !important;
}

.featured-project {
    border-color: var(--accent-primary);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    animation: pulse-border 3s ease-in-out infinite;
}

@keyframes pulse-border {
    0%, 100% {
        box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(59, 130, 246, 0.5);
    }
}

.featured-project::before {
    transform: scaleX(1);
}

.project-number {
    position: absolute;
    top: -1rem;
    left: 2rem;
    font-size: 3rem;
    font-weight: 900;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: var(--font-mono);
    opacity: 0.3;
    transition: all var(--transition-base);
}

.project:hover .project-number {
    opacity: 0.6;
}

.project-header {
    position: relative;
    margin-bottom: 1.5rem;
}

.project-status {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
    border-radius: 2rem;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-links {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    gap: 1rem;
}

.project-link {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.project-link:hover {
    color: var(--accent-primary);
}

.project-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.project-description p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.project-highlights {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.highlight-item svg {
    flex-shrink: 0;
    margin-top: 0.2rem;
    color: var(--success);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.tech-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 0.4rem;
    font-size: 0.85rem;
    font-weight: 500;
    font-family: var(--font-mono);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.tech-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.3), transparent);
    transition: left 0.5s ease;
}

.tech-tag:hover::before {
    left: 100%;
}

.tech-tag:hover {
    background: rgba(59, 130, 246, 0.15);
    border-color: var(--accent-primary);
    box-shadow: 0 5px 15px rgba(59, 130, 246, 0.2);
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

.contact-content {
    max-width: 700px;
    text-align: center;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 3rem;
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    text-decoration: none;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-weight: 600;
    transition: all var(--transition-base);
}

.contact-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--glow);
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: 2rem 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-text {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer-heart {
    color: #ef4444;
    animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    10%, 30% { transform: scale(1.1); }
    20%, 40% { transform: scale(1); }
}

.footer-copyright {
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding: 6rem 0 4rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .project {
        padding: 2rem 1.5rem;
    }
    
    .project-number {
        font-size: 2rem;
        top: -0.75rem;
        left: 1.5rem;
    }
    
    .project-title {
        font-size: 1.4rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .tech-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .contact-methods {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .project-links {
        position: static;
        margin-bottom: 1rem;
    }
}

/* ===================================
   Project Gallery
   =================================== */
.project-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 2rem 0 1.5rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

.gallery-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    position: relative;
    filter: brightness(0.9);
}

.gallery-img::after {
    content: '🔍 Click to enlarge';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(59, 130, 246, 0.95);
    color: white;
    padding: 0.5rem;
    font-size: 0.85rem;
    text-align: center;
    transform: translateY(100%);
    transition: transform var(--transition-base);
    border-radius: 0 0 0.5rem 0.5rem;
}

.gallery-img:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.4);
    filter: brightness(1);
}

.gallery-img:hover::after {
    transform: translateY(0);
}

/* Lightbox for image viewing */
.lightbox {
    display: none;
    position: fixed;
    z-index: 10000;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.lightbox-img {
    max-width: 100%;
    max-height: 90vh;
    border-radius: 0.5rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 2px solid var(--accent-primary);
}

.lightbox-close {
    position: absolute;
    top: -3rem;
    right: 0;
    font-size: 3rem;
    color: white;
    background: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    line-height: 1;
    padding: 0.5rem;
}

.lightbox-close:hover {
    color: var(--accent-primary);
    transform: rotate(90deg);
}

.lightbox-caption {
    text-align: center;
    color: var(--text-primary);
    margin-top: 1rem;
    font-size: 1rem;
}

/* Responsive gallery */
@media (max-width: 768px) {
    .project-gallery {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 0.75rem;
        padding: 0.75rem;
    }
    
    .gallery-img {
        height: 150px;
    }
    
    .lightbox-img {
        max-width: 95%;
        max-height: 80vh;
    }
    
    .lightbox-close {
        top: -2.5rem;
        font-size: 2.5rem;
    }
}

/* ===================================
   Read More Button
   =================================== */
.read-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: var(--accent-primary);
    border: 2px solid var(--accent-primary);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.read-more-btn:hover {
    background: rgba(59, 130, 246, 0.1);
    box-shadow: var(--glow);
}

.read-more-btn svg {
    transition: transform var(--transition-base);
}

/* ===================================
   Modal Styles
   =================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: block;
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    margin: 2% auto;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    width: 90%;
    max-width: 1000px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.4s ease;
}

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

.modal-close {
    position: sticky;
    top: 0;
    right: 0;
    float: right;
    z-index: 10;
    margin: 1rem 1rem 0 0;
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    line-height: 1;
}

.modal-close:hover {
    color: var(--accent-primary);
    transform: rotate(90deg);
}

.modal-header {
    padding: 3rem 3rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.modal-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.modal-subtitle {
    color: var(--success);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.modal-body {
    padding: 2rem 3rem 3rem;
}

.modal-section {
    margin-bottom: 2.5rem;
}

.modal-section:last-child {
    margin-bottom: 0;
}

.modal-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid rgba(59, 130, 246, 0.3);
}

.modal-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin: 1.5rem 0 1rem;
}

.modal-section p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.modal-section ul {
    list-style: none;
    padding-left: 0;
    margin: 1rem 0;
}

.modal-section ul ul {
    padding-left: 2rem;
    margin-top: 0.5rem;
}

.modal-section li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.modal-section li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-size: 1.2rem;
    font-weight: bold;
}

.modal-section ul ul li::before {
    content: '•';
    font-size: 1rem;
}

.modal-section strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Custom scrollbar for modal */
.modal-content::-webkit-scrollbar {
    width: 10px;
}

.modal-content::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 0 1rem 1rem 0;
}

.modal-content::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 5px;
}

.modal-content::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

/* Modal Responsive */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 5% auto;
        max-height: 85vh;
    }

    .modal-header {
        padding: 2rem 1.5rem 1rem;
    }

    .modal-header h2 {
        font-size: 1.5rem;
    }

    .modal-body {
        padding: 1.5rem;
    }

    .modal-section h3 {
        font-size: 1.3rem;
    }

    .modal-section h4 {
        font-size: 1.1rem;
    }

    .modal-close {
        margin: 0.5rem 0.5rem 0 0;
        font-size: 2rem;
    }
}

/* ===================================
   Tech Stack and Filtering
   =================================== */
.tech-stack {
    margin-top: 2rem;
}

.tech-stack h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.tech-instruction {
    color: var(--accent-primary);
    font-size: 0.9rem;
    margin-bottom: 2.5rem;
    font-weight: 500;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.tech-categories-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.tech-category {
    background: rgba(59, 130, 246, 0.05);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid rgba(59, 130, 246, 0.15);
    transition: all var(--transition-base);
}

.tech-category:hover {
    background: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.25);
    transform: translateY(-2px);
}

.category-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid rgba(59, 130, 246, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.tech-item {
    display: inline-flex;
    align-items: center;
    padding: 0.6rem 1.2rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.tech-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.3), transparent);
    transition: left 0.5s ease;
}

.tech-item:hover::before {
    left: 100%;
}

.tech-item:hover {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--accent-primary);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 5px 20px rgba(59, 130, 246, 0.3);
}

.tech-item.active {
    background: var(--accent-gradient);
    border-color: var(--accent-primary);
    color: white;
    box-shadow: 0 5px 20px rgba(59, 130, 246, 0.5);
    transform: scale(1.05);
    animation: activeGlow 2s ease-in-out infinite;
}

@keyframes activeGlow {
    0%, 100% {
        box-shadow: 0 5px 20px rgba(59, 130, 246, 0.5);
    }
    50% {
        box-shadow: 0 5px 30px rgba(59, 130, 246, 0.8);
    }
}

.clear-filter-btn {
    display: none;
    margin: 2rem auto 0;
    padding: 0.875rem 2rem;
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    border: none;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
    align-items: center;
    justify-content: center;
}

.clear-filter-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(239, 68, 68, 0.5);
}

.clear-filter-btn:active {
    transform: translateY(-1px);
}

.clear-filter-btn svg {
    vertical-align: middle;
}

/* Project filtering transitions */
.project {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.project[data-techs] {
    will-change: opacity, transform;
}

/* Tech stack responsive */
@media (max-width: 768px) {
    .tech-stack h3 {
        font-size: 1.5rem;
    }

    .tech-categories-wrapper {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .tech-category {
        padding: 1.25rem;
    }

    .category-title {
        font-size: 0.9rem;
    }

    .tech-item {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    .clear-filter-btn {
        width: 100%;
        padding: 0.75rem 1.5rem;
    }
}

/* ===================================
   Robot Helper
   =================================== */
.robot-helper {
    position: fixed;
    bottom: 100px;
    right: 2rem;
    z-index: 999;
    cursor: pointer;
    animation: float 3s ease-in-out infinite;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.robot-helper.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0) scale(1); }
    25% { transform: translateY(-20px) scale(1.1); }
    50% { transform: translateY(0) scale(0.95); }
    75% { transform: translateY(-10px) scale(1.05); }
}

.robot-body {
    position: relative;
    transition: transform 0.3s ease;
}

.robot-helper:hover .robot-body {
    transform: scale(1.1);
    animation: wiggle 0.5s ease-in-out;
}

@keyframes wiggle {
    0%, 100% { transform: scale(1.1) rotate(0deg); }
    25% { transform: scale(1.1) rotate(5deg); }
    75% { transform: scale(1.1) rotate(-5deg); }
}

.robot-antenna {
    width: 2px;
    height: 12px;
    background: var(--accent-primary);
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
}

.robot-antenna::after {
    content: '';
    position: absolute;
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--accent-primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-primary);
    animation: pulse-light 2s ease-in-out infinite;
}

@keyframes pulse-light {
    0%, 100% { opacity: 1; box-shadow: 0 0 10px var(--accent-primary); }
    50% { opacity: 0.5; box-shadow: 0 0 20px var(--accent-primary); }
}

@keyframes antenna-shake {
    0%, 100% { transform: translateX(-50%) rotate(0deg); }
    25% { transform: translateX(-50%) rotate(10deg); }
    75% { transform: translateX(-50%) rotate(-10deg); }
}

.robot-head {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
    border: 2px solid var(--accent-primary);
    border-radius: 12px;
    position: relative;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.3);
}

.robot-eyes {
    display: flex;
    gap: 12px;
    justify-content: center;
    padding-top: 15px;
}

.robot-eye {
    width: 14px;
    height: 14px;
    background: rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    border: 2px solid var(--accent-primary);
    animation: blink-eye 5s infinite;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    --pupil-x: 0px;
    --pupil-y: 0px;
}

.robot-eye::before {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--accent-primary);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-primary);
    z-index: 1;
    transform: translate(var(--pupil-x), var(--pupil-y));
    transition: transform 0.15s ease;
}

.robot-eye::after {
    content: '';
    position: absolute;
    width: 2.5px;
    height: 2.5px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    z-index: 2;
    transform: translate(calc(var(--pupil-x) - 1px), calc(var(--pupil-y) - 1px));
    transition: transform 0.15s ease;
}

@keyframes blink-eye {
    0%, 48%, 52%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(0.1); }
}

.robot-mouth {
    width: 20px;
    height: 3px;
    background: var(--accent-primary);
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
    transition: all 0.3s ease;
    box-shadow: 0 0 4px var(--accent-primary);
}

.robot-helper:hover .robot-mouth {
    width: 26px;
    border-radius: 0 0 12px 12px;
    height: 10px;
    box-shadow: 0 0 8px var(--accent-primary);
}

/* Happy state when clicked */
.robot-helper.happy .robot-mouth {
    width: 28px;
    border-radius: 0 0 14px 14px;
    height: 12px;
    animation: smile-pulse 0.6s ease;
}

@keyframes smile-pulse {
    0%, 100% { transform: translateX(-50%) scale(1); }
    50% { transform: translateX(-50%) scale(1.1); }
}

.robot-tooltip {
    position: absolute;
    bottom: calc(100% + 15px);
    right: 0;
    background: rgba(15, 23, 41, 0.95);
    border: 1px solid var(--accent-primary);
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    white-space: nowrap;
    font-size: 0.85rem;
    color: var(--text-primary);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.3);
}

.robot-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    right: 20px;
    border: 8px solid transparent;
    border-top-color: var(--accent-primary);
}

.robot-tooltip.show {
    opacity: 1;
    transform: translateY(0);
}

/* Sparkle Effect */
.sparkle {
    position: fixed;
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    box-shadow: 0 0 10px var(--accent-primary);
    animation: sparkle-animation 0.6s ease-out forwards;
}

@keyframes sparkle-animation {
    0% {
        transform: translate(0, 0) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(var(--tx), var(--ty)) scale(0);
        opacity: 0;
    }
}

@media (max-width: 768px) {
    .robot-helper {
        bottom: 90px;
        right: 1rem;
    }
    
    .robot-head {
        width: 50px;
        height: 50px;
    }
}

/* ===================================
   Utility Classes
   =================================== */
.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glow-effect {
    box-shadow: var(--glow);
}