/* ===== CSS VARIABLES ===== */
:root {
    --primary-color: #00ff88;
    --secondary-color: #00d4ff;
    --accent-color: #ff00ff;
    --bg-dark: #0a0a0a;
    --bg-darker: #050505;
    --bg-card: #111111;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #222222;
    --gradient-1: linear-gradient(135deg, #00ff88 0%, #00d4ff 100%);
    --gradient-2: linear-gradient(135deg, #ff00ff 0%, #00d4ff 100%);
    --shadow-glow: 0 0 20px rgba(0, 255, 136, 0.3);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Courier New', monospace;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

button,
a {
    user-select: none;
}

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

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

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

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

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

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-brand {
    position: absolute;
    left: 2rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    font-weight: bold;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 3rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
}

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

.burger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
}

.burger div {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 5px;
    transition: var(--transition);
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: var(--bg-darker);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 255, 136, 0.03) 2px,
        rgba(0, 255, 136, 0.03) 4px
    );
    animation: scan 8s linear infinite;
    pointer-events: none;
}

@keyframes scan {
    0% { transform: translateY(0); }
    100% { transform: translateY(50px); }
}

.hero-content {
    text-align: center;
    z-index: 1;
    padding: 2rem;
}

.hero-title {
    font-size: 6rem;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% { filter: drop-shadow(0 0 20px rgba(0, 255, 136, 0.5)); }
    50% { filter: drop-shadow(0 0 40px rgba(0, 212, 255, 0.8)); }
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-tags {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.tag {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.tag:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--gradient-1);
    color: var(--bg-dark);
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: var(--transition);
    margin-top: 2rem;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.4);
}

/* ===== SECTIONS ===== */
section {
    padding: 6rem 0;
}

.section-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 4rem;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--gradient-1);
    border-radius: 2px;
}

/* ===== ABOUT SECTION ===== */
.about {
    background: var(--bg-darker);
}

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

.about-text .intro-text {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.info-block p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

.info-block .highlight {
    color: var(--secondary-color);
    border-left: 3px solid var(--primary-color);
    padding-left: 1rem;
}

.interests h3 {
    color: var(--primary-color);
    margin: 2rem 0 1rem;
}

.interests ul {
    list-style: none;
}

.interests li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
}

.code-window {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.window-header {
    background: #1e1e1e;
    padding: 0.8rem;
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27ca40; }

.code-block {
    padding: 2rem;
    background: #1e1e1e;
    color: #d4d4d4;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.code-block code {
    color: #ce9178;
}

.code-block .string {
    color: #b5cea8;
}

/* ===== SKILLS SECTION ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

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

.skill-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.skill-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.skill-card p {
    color: var(--text-secondary);
}

/* ===== SERVICES SECTION ===== */
.services {
    background: var(--bg-darker);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

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

.service-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.price {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--gradient-1);
    color: var(--bg-dark);
    border-radius: 5px;
    font-weight: bold;
}

.services-note {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

/* ===== CONTACT SECTION ===== */
.contact-content {
    text-align: center;
}

.contact-text {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.telegram-btn {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: #0088cc;
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: bold;
    transition: var(--transition);
    margin-bottom: 2rem;
}

.telegram-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 136, 204, 0.4);
}

.social-note {
    padding: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    display: inline-block;
}

.social-note p {
    color: var(--accent-color);
}

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

.footer p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.footer-tagline {
    color: var(--primary-color);
    font-style: italic;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .burger {
        display: flex;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

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

.fade-in {
    animation: fadeInUp 0.6s ease;
}