/* ===================================
   Snowbars.net - Modern Dark Theme
   =================================== */

/* CSS Variables */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111625;
    --bg-card: #1a1f35;
    --bg-hover: #252b45;
    
    --text-primary: #e0e6ed;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-primary: #00d4ff;
    --accent-secondary: #7c3aed;
    --accent-glow: rgba(0, 212, 255, 0.3);
    --accent-purple: rgba(124, 58, 237, 0.3);
    
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --gradient-glow: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(124, 58, 237, 0.15) 100%);
    
    --border-color: #2d3550;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--accent-glow);
    
    --transition: all 0.3s ease;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

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

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Анимированный фон */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, var(--accent-glow) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, var(--accent-purple) 0%, transparent 50%);
    opacity: 0.5;
    z-index: -1;
    animation: bgPulse 10s ease-in-out infinite;
}

@keyframes bgPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.7; }
}

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

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

a:hover {
    color: var(--accent-secondary);
    text-shadow: 0 0 10px var(--accent-glow);
}

/* Навигация */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 10px var(--accent-primary));
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 5px;
}

.nav-menu li a {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: var(--text-primary);
    background: var(--bg-hover);
    box-shadow: 0 0 15px var(--accent-glow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

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

/* Hero секция */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero-container {
    position: relative;
    z-index: 2;
}

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

.hero-photo {
    position: relative;
}

.photo-frame {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    border: 3px solid var(--accent-primary);
    box-shadow: 
        0 0 30px var(--accent-glow),
        0 0 60px var(--accent-purple);
    animation: photoGlow 3s ease-in-out infinite;
}

@keyframes photoGlow {
    0%, 100% { 
        box-shadow: 0 0 30px var(--accent-glow), 0 0 60px var(--accent-purple);
    }
    50% { 
        box-shadow: 0 0 50px var(--accent-glow), 0 0 80px var(--accent-purple);
    }
}

.photo-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 320px;
    height: 320px;
    background: var(--gradient-glow);
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.5;
    animation: glowPulse 4s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.1); }
}

.hero-text {
    max-width: 600px;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.neon-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px var(--accent-glow));
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
}

.hero-description {
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

.btn {
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    display: inline-block;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px var(--accent-glow);
    color: var(--bg-primary);
}

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

.btn-secondary:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    box-shadow: 0 0 20px var(--accent-glow);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    padding: 10px 20px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.social-link:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    box-shadow: 0 0 15px var(--accent-glow);
}

/* Секции */
.section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
    box-shadow: 0 0 10px var(--accent-glow);
}

/* Обо мне */
.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.about-card {
    background: var(--bg-card);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 40px var(--accent-glow);
}

.card-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 10px var(--accent-glow));
}

.about-card h3 {
    color: var(--accent-primary);
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Услуги */
.services-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
    max-width: 900px;
    margin: 0 auto 40px;
}

.service-item {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    padding: 30px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.service-item:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 5px 30px var(--accent-glow);
    transform: translateX(10px);
}

.service-number {
    font-size: 2rem;
    font-weight: bold;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    min-width: 60px;
}

.service-content h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.service-content p {
    color: var(--text-secondary);
}

.contact-prompt {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-top: 40px;
}

.contact-prompt a {
    color: var(--accent-primary);
    font-weight: bold;
}

/* Инструменты */
.tools {
    background: var(--bg-secondary);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.tool-card {
    background: var(--bg-card);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
    display: block;
}

.tool-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 40px var(--accent-glow);
}

.tool-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.tool-card h3 {
    color: var(--accent-primary);
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.tool-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.achievement-card {
    background: var(--bg-card);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
}

.achievement-card:hover {
    border-color: var(--accent-secondary);
    box-shadow: 0 10px 40px var(--accent-purple);
    transform: translateY(-5px);
}

.cert-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.achievement-card h3 {
    color: var(--accent-secondary);
    margin-bottom: 10px;
    font-size: 1.4rem;
}

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

.cert-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.cert-link {
    padding: 8px 16px;
    background: var(--bg-hover);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
}

.cert-link:hover {
    border-color: var(--accent-secondary);
    box-shadow: 0 0 15px var(--accent-purple);
}

/* Гостевая книга */
.guestbook {
    background: var(--bg-secondary);
}

.guestbook-container {
    max-width: 800px;
    margin: 0 auto;
}

.guestbook-entries {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 30px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    max-height: 400px;
    overflow-y: auto;
}

.guestbook-entry {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.guestbook-entry:last-child {
    border-bottom: none;
}

.guestbook-entry .author {
    color: var(--accent-primary);
    font-weight: bold;
    margin-bottom: 5px;
}

.guestbook-entry .date {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.guestbook-entry .message {
    color: var(--text-secondary);
    line-height: 1.7;
}

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

.guestbook-form textarea {
    width: 100%;
    min-height: 150px;
    padding: 15px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    margin-bottom: 20px;
}

.guestbook-form textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 10px var(--accent-glow);
}

.captcha-container {
    margin-bottom: 20px;
}

/* Контакты */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    font-size: 2.5rem;
    min-width: 50px;
}

.contact-item h4 {
    color: var(--accent-primary);
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.contact-item a {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

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

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-form input,
.contact-form textarea {
    padding: 15px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 10px var(--accent-glow);
}

.contact-form textarea {
    min-height: 150px;
    resize: vertical;
}

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

.footer-content {
    text-align: center;
    color: var(--text-muted);
}

.footer-content p {
    margin-bottom: 10px;
}

.footer-counter {
    font-size: 0.9rem;
}

/* Адаптивность */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-photo {
        display: flex;
        justify-content: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background: var(--bg-secondary);
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .photo-frame {
        width: 250px;
        height: 250px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-grid,
    .tools-grid,
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .service-item {
        flex-direction: column;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .social-links {
        flex-direction: column;
    }
    
    .photo-frame {
        width: 200px;
        height: 200px;
    }
}

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

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

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

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

/* Отступ для якорных ссылок с учётом фиксированной навигации */
section[id] {
    scroll-margin-top: 80px;
}

/* Анимации при скролле */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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