:root {
    --primary-color: #BB86FC;
    --secondary-color: #9C27B0;
    --accent-color: #CF6679;
    --light-purple: #E1BEE7;
    --dark-purple: #6200EA;
    --bg-color: #0A0A0A;
    --surface-color: #1A1A1A;
    --card-bg: #212121;
    --text-color: #E0E0E0;
    --text-secondary: #B0B0B0;
    --success-color: #4CAF50;
    --error-color: #F44336;
    --warning-color: #FF9800;
    --border-color: #333333;
    --shadow-color: rgba(187, 134, 252, 0.3);
    --gradient-primary: linear-gradient(135deg, #BB86FC 0%, #9C27B0 100%);
    --gradient-secondary: linear-gradient(135deg, #CF6679 0%, #BB86FC 100%);
    --gradient-bg: linear-gradient(135deg, #0A0A0A 0%, #1A1A1A 100%);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 12px;
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
    --glow-primary: 0 0 20px rgba(187, 134, 252, 0.4);
    --glow-accent: 0 0 15px rgba(207, 102, 121, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--bg-color);
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(187, 134, 252, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(156, 39, 176, 0.1) 0%, transparent 50%);
    background-attachment: fixed;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-color);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
}

p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--light-purple);
    text-shadow: var(--glow-primary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    text-decoration: none;
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.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;
    z-index: -1;
}

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

.primary-btn {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(187, 134, 252, 0.3);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(187, 134, 252, 0.5);
    color: white;
}

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

.secondary-btn:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--glow-primary);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
    font-size: clamp(2rem, 4vw, 2.5rem);
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
    box-shadow: var(--glow-primary);
}

/* Floating particles animation */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.floating-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
    opacity: 0.3;
}

/* Header and Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(26, 26, 26, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

header.scrolled {
    background: rgba(26, 26, 26, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(var(--glow-primary));
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding: 8px 0;
    transition: var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

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

.nav-links a:hover {
    color: var(--primary-color);
    text-shadow: var(--glow-primary);
}

.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: 
        radial-gradient(circle at 30% 70%, rgba(187, 134, 252, 0.15) 0%, transparent 60%),
        radial-gradient(circle at 70% 30%, rgba(156, 39, 176, 0.1) 0%, transparent 60%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23BB86FC' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
    opacity: 0.5;
    z-index: -1;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

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

.hero-content h1 {
    font-size: clamp(3rem, 6vw, 4rem);
    margin-bottom: 20px;
    text-align: left;
}

.hero-content h2 {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 400;
    margin-bottom: 30px;
    color: var(--text-secondary);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: var(--text-secondary);
}

.btn-container {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    animation: slideInRight 1s ease-out;
}

    .code-window {
        width: 100%;
        max-width: 500px;
        background: var(--card-bg);
        border-radius: var(--border-radius);
        overflow: hidden;
        box-shadow: var(--shadow-xl);
        border: 1px solid var(--border-color);
        position: relative;
    }

.code-window::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(187, 134, 252, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.code-header {
    background: var(--surface-color);
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border-color);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.red { background: #FF5F56; }
.yellow { background: #FFBD2E; }
.green { background: #27C93F; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.code-content {
    padding: 25px;
    background: var(--card-bg);
    font-family: 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
}

.code-content pre {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
}

.code-content code {
    color: var(--text-color);
}

.code-content .function { color: #DCDCAA; }
.code-content .method { color: #9CDCFE; }
.code-content .string { color: #CE9178; }
.code-content .keyword { color: #569CD6; }

/* Typing animation */
.typing-animation {
    overflow: hidden;
    border-right: 2px solid var(--primary-color);
    white-space: nowrap;
    animation: typing 3s steps(30, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: var(--primary-color); }
}

/* Sections */
section, .section {
    padding: 100px 0;
    position: relative;
}

.about {
    background: var(--surface-color);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 80% 20%, rgba(187, 134, 252, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-text p {
    margin-bottom: 25px;
    color: var(--text-secondary);
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.stat-item:hover::before {
    opacity: 0.1;
}

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

.stat-item h3 {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 700;
}

.stat-item p {
    color: var(--text-secondary);
    margin: 0;
}

/* Skills Section */
.skills {
    padding: 100px 0;
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 60px;
}

.skill-category {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

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

.skill-category h3 {
    margin-bottom: 30px;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.skill-item {
    margin-bottom: 25px;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

.skill-name {
    font-weight: 500;
    color: var(--text-color);
}

.skill-percent {
    color: var(--primary-color);
    font-weight: 600;
}

.skill-bar {
    height: 8px;
    background: var(--surface-color);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.skill-level {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    transition: width 2s ease-out;
    position: relative;
}

.skill-level::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    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%); }
}

/* Services Section */
.services {
    background: var(--surface-color);
    padding: 100px 0;
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 80%, rgba(156, 39, 176, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

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

.service-card:hover::before {
    opacity: 0.1;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.service-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
    filter: drop-shadow(var(--glow-primary));
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

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

/* Pricing Section */
.pricing {
    padding: 100px 0;
}

.pricing-plans {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.pricing-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.pricing-card:hover::before {
    opacity: 0.05;
}

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

.pricing-card.featured {
    border: 2px solid var(--primary-color);
    box-shadow: var(--glow-primary);
    transform: scale(1.05);
}

.pricing-card.featured::after {
    content: 'ПОПУЛЯРНО';
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--gradient-primary);
    color: white;
    padding: 5px 40px;
    font-size: 0.8rem;
    font-weight: 600;
    transform: rotate(45deg);
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.pricing-features ul {
    list-style: none;
    text-align: left;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 25px;
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

.pricing-note {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    background: var(--surface-color);
    padding: 20px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

/* Contact Section */
.contact {
    background: var(--surface-color);
    padding: 100px 0;
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(187, 134, 252, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
    justify-content: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding: 25px;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 5px;
}

.contact-item h3 {
    margin-bottom: 5px;
    color: var(--text-color);
    font-size: 1.1rem;
}

.contact-item p {
    margin: 0;
    color: var(--text-secondary);
}

.contact-social {
    margin-top: 40px;
}

.contact-social h3 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary-color);
}

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

.social-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    min-width: 120px;
    text-decoration: none;
    color: var(--text-color);
    transition: var(--transition);
}

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

.social-icon i {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.social-icon:hover i {
    color: white;
}

.social-icon span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Footer */
footer {
    background: var(--bg-color);
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.copyright {
    color: var(--text-secondary);
}

.copyright i {
    color: var(--accent-color);
}

.legal-info {
    text-align: right;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.legal-info p {
    margin-bottom: 5px;
}

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

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

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

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

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

.slide-in {
    animation: slideInUp 0.8s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.8s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.8s ease-out;
}

/* Scroll reveal animations */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease-out;
}

.reveal.reveal-hidden {
    opacity: 0;
    transform: translateY(50px);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Payment specific styles */
.payment-page {
    background: var(--bg-color);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.form-card, .invoice-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 100%;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.form-card::before, .invoice-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.05;
    pointer-events: none;
}

.form-card h1, .invoice-card h1 {
    margin-bottom: 30px;
    color: var(--primary-color);
}

.form-card label {
    display: block;
    margin-bottom: 20px;
    text-align: left;
    color: var(--text-color);
    font-weight: 500;
}

.form-card input,
.form-card select,
.form-card textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--surface-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: var(--transition);
    margin-top: 5px;
}

.form-card input:focus,
.form-card select:focus,
.form-card textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(187, 134, 252, 0.1);
}

.form-card button {
    width: 100%;
    margin-top: 20px;
}

.invoice-card p {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--text-secondary);
}

.invoice-card #sum {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.hidden {
    display: none;
}

.status {
    padding: 20px;
    border-radius: var(--border-radius);
    margin-top: 20px;
    font-weight: 500;
}

.status.success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.status.error {
    background: rgba(244, 67, 54, 0.1);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--surface-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-content h1 {
        text-align: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .skills-container {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 20px;
    }
    
    .legal-info {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--surface-color);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 30px;
        transform: translateX(-100%);
        transition: var(--transition);
    }
    
    .nav-links.active {
        transform: translateX(0);
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-plans {
        grid-template-columns: 1fr;
    }
    
    .btn-container {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 250px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stat-item h3 {
        font-size: 2.5rem;
    }
    
    .form-card, .invoice-card {
        padding: 30px 20px;
    }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--surface-color);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--light-purple);
}

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

::-moz-selection {
    background: var(--primary-color);
    color: white;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 40px;
    margin: 30px 0;
    justify-content: center;
}

.hero-stat {
    text-align: center;
    padding: 20px;
    background: rgba(187, 134, 252, 0.1);
    border-radius: var(--border-radius);
    border: 1px solid rgba(187, 134, 252, 0.2);
    transition: var(--transition);
}

.hero-stat:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(187, 134, 252, 0.3);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

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

/* Window title in code header */
.window-title {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* About list */
.about-list {
    list-style: none;
    margin: 20px 0;
    padding: 0;
}

.about-list li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-list li i {
    color: var(--success-color);
    font-size: 0.9rem;
}

/* Stat icons */
.stat-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Service technologies */
.service-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 15px;
    justify-content: center;
}

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

/* Portfolio Section */
.portfolio {
    padding: 100px 0;
    background: var(--surface-color);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.portfolio-item {
    border-radius: var(--border-radius);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
}

.portfolio-image {
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    position: relative;
    overflow: hidden;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 30px;
    opacity: 0;
    transition: var(--transition);
}

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

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.portfolio-overlay h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.portfolio-overlay p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.portfolio-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.portfolio-tech span {
    background: var(--primary-color);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
}

/* Pricing improvements */
.pricing-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.pricing-guarantee {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.pricing-guarantee h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.pricing-guarantee p {
    margin-bottom: 8px;
    color: var(--text-secondary);
}



/* Footer improvements */
.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.copyright {
    color: var(--text-secondary);
}

.copyright i {
    color: var(--accent-color);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero-stat {
        padding: 15px;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-image {
        height: 250px;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .social-links {
        flex-direction: column;
        align-items: center;
    }
    
    .social-icon {
        min-width: 200px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        gap: 15px;
    }
    
    .service-technologies,
    .portfolio-tech {
        justify-content: center;
    }
    
    .tech-tag {
        font-size: 0.7rem;
        padding: 3px 6px;
    }
}