/* CSS Variables for Theme Support */
:root {
    /* Light Theme Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #fbbf24;
    --secondary-dark: #f59e0b;
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
    
    /* Light Theme Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #ffffff;
    --bg-navbar: rgba(255, 255, 255, 0.95);
    --bg-navbar-scrolled: rgba(255, 255, 255, 0.98);
    
    /* Light Theme Text */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --text-light: #ffffff;
    
    /* Light Theme Borders & Shadows */
    --border-color: #e5e7eb;
    --shadow-light: rgba(0, 0, 0, 0.05);
    --shadow-medium: rgba(0, 0, 0, 0.1);
    --shadow-heavy: rgba(0, 0, 0, 0.15);
    
    /* Light Theme Cards */
    --card-bg: #ffffff;
    --card-border: #e5e7eb;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --card-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Dark Theme Colors */
[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #fbbf24;
    --secondary-dark: #f59e0b;
    --gradient-start: #4f46e5;
    --gradient-end: #7c3aed;
    
    /* Dark Theme Backgrounds */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-navbar: rgba(15, 23, 42, 0.95);
    --bg-navbar-scrolled: rgba(15, 23, 42, 0.98);
    
    /* Dark Theme Text */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-light: #ffffff;
    
    /* Dark Theme Borders & Shadows */
    --border-color: #334155;
    --shadow-light: rgba(0, 0, 0, 0.3);
    --shadow-medium: rgba(0, 0, 0, 0.4);
    --shadow-heavy: rgba(0, 0, 0, 0.5);
    
    /* Dark Theme Cards */
    --card-bg: #1e293b;
    --card-border: #334155;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --card-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    transition: background-color 0.5s ease, color 0.5s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.visible{
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

/* Enhanced Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-up {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.scale-in {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

.slide-in-bottom {
    opacity: 0;
    transform: translateY(100px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-bottom.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animations */
.stagger-item {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.stagger-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.stagger-item:nth-child(1) { transition-delay: 0.1s; }
.stagger-item:nth-child(2) { transition-delay: 0.2s; }
.stagger-item:nth-child(3) { transition-delay: 0.3s; }
.stagger-item:nth-child(4) { transition-delay: 0.4s; }
.stagger-item:nth-child(5) { transition-delay: 0.5s; }
.stagger-item:nth-child(6) { transition-delay: 0.6s; }

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--bg-navbar);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid var(--border-color);
    animation: slideDown 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-logo{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}
.nav-logo img{
    width: 60px;
}


.nav-logo h2 {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.8rem;
    transition: all 0.3s ease;
}


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

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    border-color: var(--primary-color);
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.2);
}

.theme-toggle i {
    font-size: 1.2rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.light-icon {
    color: #fbbf24;
    opacity: 1;
    transform: rotate(0deg);
}

.dark-icon {
    color: #6366f1;
    opacity: 0;
    transform: rotate(180deg);
    position: absolute;
}

[data-theme="dark"] .light-icon {
    opacity: 0;
    transform: rotate(-180deg);
}

[data-theme="dark"] .dark-icon {
    opacity: 1;
    transform: rotate(0deg);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    transition: all 0.3s ease;
}

.hamburger:hover {
    transform: scale(1.1);
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: var(--text-light);
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    animation: float 20s ease-in-out infinite;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.3s both;
}

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

.highlight {
    color: var(--secondary-color);
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--secondary-color);
    transform: scaleX(0);
    animation: expandWidth 1s cubic-bezier(0.4, 0, 0.2, 1) 1s forwards;
}

@keyframes expandWidth {
    to {
        transform: scaleX(1);
    }
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.6s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.9s both;
}

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    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: var(--secondary-color);
    color: var(--text-primary);
}

.btn-primary:hover {
    background: var(--secondary-dark);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 35px rgba(251, 191, 36, 0.4);
}

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

.btn-secondary:hover {
    background: var(--text-light);
    color: var(--text-primary);
    transform: translateY(-3px) scale(1.05);
    color:#0f172a;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s cubic-bezier(0.4, 0, 0.2, 1) 0.6s both;
}

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

.hero-graphic {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-graphic i {
    position: absolute;
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.8);
    animation: float 6s ease-in-out infinite;
    transition: all 0.3s ease;
}

.hero-graphic i:hover {
    transform: scale(1.2) rotate(10deg);
    color: var(--secondary-color);
}

.hero-graphic i:nth-child(1) {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 0s;
}

.hero-graphic i:nth-child(2) {
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    animation-delay: 1.5s;
}

.hero-graphic i:nth-child(3) {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 3s;
}

.hero-graphic i:nth-child(4) {
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    animation-delay: 4.5s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) translateX(-50%); }
    50% { transform: translateY(-20px) translateX(-50%); }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
    opacity: 0;
    transform: translateY(30px);
}

.section-header.visible {
    opacity: 1;
    transform: translateY(0);
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    position: relative;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
    transition: transform 1s cubic-bezier(0.4, 0, 0.2, 1) 0.8s;
}

.section-header.visible h2::after {
    transform: translateX(-50%) scaleX(1);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(20px);
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1) 0.5s;
}

.section-header.visible p {
    opacity: 1;
    transform: translateY(0);
}

/* Services Section */
.services {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    border: 1px solid var(--card-border);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(50px);
}

.service-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.service-card:nth-child(1) { transition-delay: 0.3s; }
.service-card:nth-child(2) { transition-delay: 0.5s; }
.service-card:nth-child(3) { transition-delay: 0.7s; }
.service-card:nth-child(4) { transition-delay: 0.9s; }
.service-card:nth-child(5) { transition-delay: 1.1s; }
.service-card:nth-child(6) { transition-delay: 1.3s; }

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

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

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.service-icon i {
    font-size: 2rem;
    color: var(--text-light);
    transition: all 0.3s ease;
}

.service-card:hover .service-icon i {
    transform: scale(1.2);
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.service-card:hover h3 {
    color: var(--primary-color);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    transition: color 0.3s ease;
}

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--bg-primary);
}

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

.about-text {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1) 0.3s;
}

.about-text.visible {
    opacity: 1;
    transform: translateX(0);
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    position: relative;
}

.about-text h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform 1s cubic-bezier(0.4, 0, 0.2, 1) 0.8s;
}

.about-text.visible h2::after {
    transform: scaleX(1);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
    transition: color 0.3s ease;
}

.stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
}

.stat.visible {
    opacity: 1;
    transform: translateY(0);
}

.stat:nth-child(1) { transition-delay: 1.0s; }
.stat:nth-child(2) { transition-delay: 1.2s; }
.stat:nth-child(3) { transition-delay: 1.4s; }

.stat:hover {
    transform: translateY(-5px);
}

.stat h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.stat:hover h3 {
    transform: scale(1.1);
    color: var(--secondary-color);
}

.stat p {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transform: translateX(50px);
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1) 0.6s;
}

.about-image.visible {
    opacity: 1;
    transform: translateX(0);
}

.about-graphic {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-graphic i {
    position: absolute;
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.8;
    animation: pulse 4s ease-in-out infinite;
    transition: all 0.3s ease;
}

.about-graphic i:hover {
    transform: scale(1.2) rotate(15deg);
    color: var(--secondary-color);
}

.about-graphic i:nth-child(1) {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 0s;
}

.about-graphic i:nth-child(2) {
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    animation-delay: 1.3s;
}

.about-graphic i:nth-child(3) {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 2.6s;
}

@keyframes pulse {
    0%, 100% { transform: scale(1) translateX(-50%); opacity: 0.8; }
    50% { transform: scale(1.1) translateX(-50%); opacity: 1; }
}

/* Portfolio Section */
.portfolio {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--card-border);
    position: relative;
    opacity: 0;
    transform: translateY(50px);
}

.portfolio-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.portfolio-item:nth-child(1) { transition-delay: 0.3s; }
.portfolio-item:nth-child(2) { transition-delay: 0.5s; }
.portfolio-item:nth-child(3) { transition-delay: 0.7s; }
.portfolio-item:nth-child(4) { transition-delay: 0.9s; }
.portfolio-item:nth-child(5) { transition-delay: 1.1s; }
.portfolio-item:nth-child(6) { transition-delay: 1.3s; }

.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.portfolio-item:hover::before {
    opacity: 1;
}

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

.portfolio-image {
    height: 200px;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.portfolio-image::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 ease;
}

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

.portfolio-image i {
    font-size: 3rem;
    color: var(--text-light);
    transition: all 0.3s ease;
    z-index: 2;
}

.portfolio-item:hover .portfolio-image i {
    transform: scale(1.2) rotate(10deg);
}

.portfolio-content {
    padding: 1.5rem;
    position: relative;
    z-index: 2;
}

.portfolio-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.portfolio-item:hover .portfolio-content h3 {
    color: var(--primary-color);
}

.portfolio-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
    transition: color 0.3s ease;
}

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.portfolio-tags span {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.portfolio-tags span:hover {
    background: var(--primary-color);
    color: var(--text-light);
    transform: translateY(-2px);
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1) 0.3s;
}

.contact-info.visible {
    opacity: 1;
    transform: translateX(0);
}

.contact-item {
    display: flex;
    gap: 30px;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--card-border);
    opacity: 0;
    transform: translateY(30px);
}

.contact-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.contact-item:nth-child(1) { transition-delay: 0.5s; }
.contact-item:nth-child(2) { transition-delay: 0.7s; }
.contact-item:nth-child(3) { transition-delay: 0.9s; }

.contact-item:hover {
    background: var(--bg-secondary);
    transform: translateX(10px);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.contact-item:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.contact-icon i {
    font-size: 1.5rem;
    color: var(--text-light);
    transition: all 0.3s ease;
}

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

.contact-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    transition: color 0.3s ease;
}

.contact-item:hover h3 {
    color: var(--primary-color);
}

.contact-item p {
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.contact-form {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--card-border);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateX(50px);
}

.contact-form.visible {
    opacity: 1;
    transform: translateX(0);
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1) 0.6s;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
    transition: color 0.3s ease;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
    position: relative;
}

.footer-section h3::after,
.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--secondary-color);
    border-radius: 1px;
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.footer-section ul li:hover {
    transform: translateX(5px);
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.footer-section ul li a::before {
    content: '→';
    position: absolute;
    left: -15px;
    opacity: 0;
    transition: all 0.3s ease;
}

.footer-section ul li:hover a::before {
    opacity: 1;
    left: -20px;
}

.footer-section ul li a:hover {
    color: var(--secondary-color);
    padding-left: 10px;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.social-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--secondary-color);
    transform: scale(0);
    transition: transform 0.3s ease;
    border-radius: 50%;
}

.social-links a:hover::before {
    transform: scale(1);
}

.social-links a:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 10px 25px rgba(251, 191, 36, 0.3);
}

.social-links a i {
    position: relative;
    z-index: 2;
    transition: color 0.3s ease;
}

.social-links a:hover i {
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-tertiary);
}

/* Scroll to top button */
.scroll-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--text-light);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    position: relative;
    overflow: hidden;
}

.scroll-to-top::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--secondary-color);
    transform: scale(0);
    transition: transform 0.3s ease;
    border-radius: 50%;
}

.scroll-to-top:hover::before {
    transform: scale(1);
}

.scroll-to-top:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

.scroll-to-top i {
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
}

.scroll-to-top:hover i {
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .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(--card-shadow);
        padding: 2rem 0;
        border-top: 1px solid var(--border-color);
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .stats {
        justify-content: center;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .service-card,
    .portfolio-item {
        margin: 0 1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .theme-toggle {
        width: 40px;
        height: 40px;
    }
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

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

/* Custom Scrollbar Styling */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 6px;
    border: 2px solid var(--bg-secondary);
    transition: all 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    transform: scale(1.05);
}

/* Firefox scrollbar styling */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--bg-secondary);
}