:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --glass-bg: rgba(18, 18, 26, 0.65);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: 20px;
    --radius: 16px;
    --radius-sm: 8px;
    --container: 1100px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.bg-wallpaper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: url('wallpaper.webp') center/cover no-repeat;
    filter: blur(40px) brightness(0.9);
    transform: scale(1.1);
}

.bg-wallpaper::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 12, 41, 0.5), rgba(48, 43, 99, 0.5), rgba(36, 36, 62, 0.5));
}

.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 220px;
}

.nav-links {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
    border-radius: 1px;
}

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 200;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
}

.hero-content {
    text-align: center;
    padding: 48px 40px;
    max-width: 640px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease-out;
}

.avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--accent);
    box-shadow: 0 0 30px var(--accent-glow);
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero h1 {
    font-size: clamp(1.8rem, 5vw, 2.8rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

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

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 20px var(--accent-glow);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--accent);
    background: var(--accent-glow);
    transform: translateY(-2px);
}

.section {
    padding: 80px 24px;
}

.section-title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
    letter-spacing: -0.5px;
}

.about-content {
    max-width: 720px;
    margin: 0 auto;
    padding: 40px;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.about-content p:last-of-type {
    margin-bottom: 24px;
}

.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    padding: 6px 16px;
    background: var(--accent-glow);
    color: var(--accent-hover);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
}

.skill-tag:hover {
    background: var(--accent);
    color: #fff;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    max-width: 720px;
    margin: 0 auto;
}

.project-card {
    overflow: hidden;
    transition: var(--transition);
    padding: 0;
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
}

.project-image {
    height: 180px;
    background: linear-gradient(135deg, var(--accent-glow), var(--bg-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-placeholder {
    font-size: 3rem;
    opacity: 0.5;
}

.project-info {
    padding: 24px;
}

.project-info h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.project-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.tag {
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.project-link {
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: 500;
    transition: var(--transition);
}

.project-link:hover {
    color: var(--accent-hover);
}

.contact-content {
    max-width: 720px;
    margin: 0 auto;
    padding: 32px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 20px;
    justify-items: center;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 16px;
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
    overflow: hidden;
}

.contact-card:hover {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--text-primary);
    transform: translateY(-4px);
}

.contact-icon {
    width: 32px;
    height: 32px;
    color: var(--accent);
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.footer {
    text-align: center;
    padding: 32px 24px;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--glass-border);
    word-break: break-word;
    line-height: 1.8;
}

.footer a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

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

.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 260px;
        height: 100vh;
        flex-direction: column;
        background: var(--bg-secondary);
        padding: 80px 32px 32px;
        gap: 24px;
        transform: translateX(100%);
        transition: var(--transition);
        border-left: 1px solid var(--glass-border);
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .hero-content {
        padding: 36px 24px;
    }

    .about-content,
    .contact-content {
        padding: 28px;
    }

    .section {
        padding: 60px 16px;
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-container {
        height: auto;
        padding: 12px 0;
        flex-wrap: wrap;
        gap: 8px;
    }

    .logo {
        max-width: 100%;
    }

    .nav-links {
        width: 100%;
        justify-content: flex-start;
        gap: 16px 24px;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

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

    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .about-content,
    .contact-content {
        padding: 20px;
    }

    .nav-links {
        gap: 12px 16px;
        font-size: 0.85rem;
    }
}