/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary: #667eea;
    --primary-light: #7c93f5;
    --accent-purple: #764ba2;
    --accent-green: #25D366;
    --accent-blue: #0088cc;
    --accent-orange: #ff6b35;
    
    /* Dark theme */
    --dark-bg: #0a0a0f;
    --dark-surface: #13131a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --border-color: rgba(102, 126, 234, 0.2);
    
    /* Transitions */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.section {
    padding: 80px 0;
}

.section-dark {
    background: var(--dark-surface);
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 48px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent-purple));
    color: white;
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: rgba(102, 126, 234, 0.2);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 16px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: white;
    font-weight: 700;
    font-size: 24px;
}

.logo-icon {
    font-size: 32px;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 28px;
    height: 3px;
    background: white;
    border-radius: 3px;
    transition: var(--transition);
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--dark-surface);
        flex-direction: column;
        padding: 20px;
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
    }
    
    .nav.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .header .btn-primary {
        display: none;
    }
}

/* ===== HERO ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.15), transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.15), transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: clamp(18px, 3vw, 24px);
    color: var(--text-secondary);
    margin-bottom: 48px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    margin-top: 8px;
}

/* ===== ABOUT ===== */
.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text h3 {
    font-size: 32px;
    margin-bottom: 24px;
    color: var(--primary);
}

.about-text p {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: rgba(102, 126, 234, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.feature-icon {
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

/* ===== SERVICES ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.service-card {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.2);
}

.service-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.service-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--primary);
}

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

/* ===== PORTFOLIO ===== */
.portfolio-filters {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.filter-btn {
    padding: 12px 24px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--accent-purple));
    color: white;
    border-color: transparent;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 64px;
}

.portfolio-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--dark-surface);
    border: 1px solid var(--border-color);
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-item:hover img {
    transform: scale(1.1);
}

.portfolio-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(10, 10, 15, 0.95), transparent);
}

.portfolio-item h4 {
    font-size: 20px;
    margin-bottom: 8px;
}

.portfolio-item p {
    color: var(--text-secondary);
    font-size: 14px;
}

.portfolio-cta {
    text-align: center;
    padding: 48px 24px;
    background: rgba(102, 126, 234, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 16px;
}

.portfolio-cta h3 {
    font-size: 32px;
    margin-bottom: 16px;
}

.portfolio-cta p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 18px;
}

/* ===== CONTACTS ===== */
.contacts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 64px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    text-decoration: none;
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

.contact-icon {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 32px;
    height: 32px;
}

.contact-icon.telegram {
    background: rgba(0, 136, 204, 0.1);
    color: var(--accent-blue);
}

.contact-icon.avito {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
}

.contact-icon.vk {
    background: rgba(0, 119, 255, 0.1);
    color: #0077ff;
}

.contact-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.contact-value {
    font-size: 20px;
    font-weight: 600;
    color: white;
}

/* ===== CONTACT FORM ===== */
.contact-form-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.contact-form {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 48px;
}

.contact-form h3 {
    font-size: 32px;
    text-align: center;
    margin-bottom: 16px;
}

.form-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px;
    background: var(--dark-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: white;
    font-family: inherit;
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

.form-note {
    text-align: center;
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 16px;
}

.form-success {
    text-align: center;
    padding: 64px 32px;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: rgba(37, 211, 102, 0.1);
    color: var(--accent-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    margin: 0 auto 24px;
}

.form-success h3 {
    font-size: 32px;
    margin-bottom: 16px;
}

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

.success-note {
    font-size: 14px;
    margin-bottom: 32px !important;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
    margin-right: 8px;
}

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

/* ===== WORKING HOURS ===== */
.working-hours {
    max-width: 400px;
    margin: 64px auto 0;
    padding: 32px;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    text-align: center;
}

.working-hours h4 {
    font-size: 24px;
    margin-bottom: 24px;
}

.hours-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    color: var(--text-secondary);
}

.hours-time {
    color: var(--primary);
    font-weight: 600;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--dark-surface);
    border-top: 1px solid var(--border-color);
    padding: 48px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 48px;
    margin-bottom: 32px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 16px;
}

.footer-links h4,
.footer-contacts h4 {
    margin-bottom: 16px;
    color: var(--primary);
}

.footer-links a,
.footer-contacts a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 12px;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

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

.reveal {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

@media (max-width: 768px) {
    .contact-form {
        padding: 32px 24px;
    }
    
    .section {
        padding: 60px 0;
    }
}