:root {
  
  --bg-base: #0a0c10;
  --bg-surface: #13161f;
  --bg-surface-hover: #191d29;
  --bg-surface-elevated: #1e2332;
  
  
  --border-subtle: #232735;
  --border-strong: #33394c;
  --border-active: #47516b;
  
  
  --text-main: #f1f5f9;       
  --text-secondary: #94a3b8;  
  --text-muted: #64748b;      
  
  
  --tag-emerald-text: #34d399;
  --tag-emerald-bg: rgba(6, 78, 59, 0.45);
  --tag-emerald-border: rgba(16, 185, 129, 0.4);
  
  --tag-sky-text: #38bdf8;
  --tag-sky-bg: rgba(12, 74, 110, 0.45);
  --tag-sky-border: rgba(56, 189, 248, 0.4);
  
  --tag-amber-text: #fbbf24;
  --tag-amber-bg: rgba(120, 53, 15, 0.45);
  --tag-amber-border: rgba(245, 158, 11, 0.4);
  
  --tag-purple-text: #c084fc;
  --tag-purple-bg: rgba(88, 28, 135, 0.45);
  --tag-purple-border: rgba(168, 85, 247, 0.4);
  
  --tag-rose-text: #fb7185;
  --tag-rose-bg: rgba(136, 19, 55, 0.45);
  --tag-rose-border: rgba(244, 63, 94, 0.4);
  
  --tag-cyan-text: #22d3ee;
  --tag-cyan-bg: rgba(22, 78, 99, 0.45);
  --tag-cyan-border: rgba(6, 182, 212, 0.4);
  
  --tag-blue-text: #60a5fa;
  --tag-blue-bg: rgba(30, 58, 138, 0.45);
  --tag-blue-border: rgba(59, 130, 246, 0.4);
  
  --tag-slate-text: #cbd5e1;
  --tag-slate-bg: rgba(30, 41, 59, 0.5);
  --tag-slate-border: rgba(100, 116, 139, 0.4);

  
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-full: 9999px;
  --max-width: 1080px;

  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

:focus-visible {
  outline: 2px solid var(--tag-sky-text);
  outline-offset: 3px;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.bg-atmosphere {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 600px;
  background-image: url('../assets/images/bg-atmosphere.jpg');
  background-size: cover;
  background-position: top center;
  background-repeat: no-repeat;
  opacity: 0.65;
  pointer-events: none;
  z-index: -1;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 40%, rgba(0,0,0,0) 100%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 40%, rgba(0,0,0,0) 100%);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  background-color: rgba(10, 12, 16, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 50;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.logo-dot {
  width: 8px;
  height: 8px;
  background-color: var(--tag-emerald-text);
  border-radius: var(--radius-full);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.15s ease, background-color 0.15s ease;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-link:hover {
  color: var(--text-main);
  background-color: var(--bg-surface);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-github-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.875rem;
  font-weight: 500;
  min-height: 44px;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn-github-top:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-strong);
}

.hero-section {
  padding-top: 60px;
  padding-bottom: 50px;
  text-align: center;
}

.hero-avatar-wrapper {
  margin-bottom: 20px;
  display: inline-block;
  position: relative;
}

.hero-avatar {
  width: 110px;
  height: 110px;
  border-radius: var(--radius-full);
  border: 2px solid var(--border-strong);
  object-fit: cover;
  background-color: var(--bg-surface);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.hero-title {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  color: var(--text-main);
}

.hero-headline {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 20px;
  line-height: 1.6;
}

.hero-socials {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.social-btn:hover {
  color: var(--text-main);
  border-color: var(--border-strong);
  background-color: var(--bg-surface-hover);
}

.social-btn svg {
  width: 20px;
  height: 20px;
  display: block;
}

.social-btn svg:not([fill="none"]) {
  fill: currentColor;
}


.hero-bio-card {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  background-color: rgba(19, 22, 31, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  text-align: left;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.hero-bio-card p + p {
  margin-top: 10px;
}

.section {
  padding-top: 40px;
  padding-bottom: 50px;
}

.section-header {
  margin-bottom: 24px;
}

.section-title {
  font-size: 1.625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-subtitle {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.featured-card {
  display: grid;
  grid-template-columns: 420px 1fr;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.featured-card:hover {
  border-color: var(--border-strong);
}

.featured-media {
  position: relative;
  background-color: #050608;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.featured-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.featured-content {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-bottom: 10px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 12px;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 500;
  line-height: 1.4;
}

.tag-emerald {
  color: var(--tag-emerald-text);
  background-color: var(--tag-emerald-bg);
  border-color: var(--tag-emerald-border);
}

.tag-sky {
  color: var(--tag-sky-text);
  background-color: var(--tag-sky-bg);
  border-color: var(--tag-sky-border);
}

.tag-amber {
  color: var(--tag-amber-text);
  background-color: var(--tag-amber-bg);
  border-color: var(--tag-amber-border);
}

.tag-purple {
  color: var(--tag-purple-text);
  background-color: var(--tag-purple-bg);
  border-color: var(--tag-purple-border);
}

.tag-rose {
  color: var(--tag-rose-text);
  background-color: var(--tag-rose-bg);
  border-color: var(--tag-rose-border);
}

.tag-cyan {
  color: var(--tag-cyan-text);
  background-color: var(--tag-cyan-bg);
  border-color: var(--tag-cyan-border);
}

.tag-blue {
  color: var(--tag-blue-text);
  background-color: var(--tag-blue-bg);
  border-color: var(--tag-blue-border);
}

.tag-slate {
  color: var(--tag-slate-text);
  background-color: var(--tag-slate-bg);
  border-color: var(--tag-slate-border);
}

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

.btn-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  min-height: 44px;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background-color: var(--text-main);
  color: #0a0c10;
  border: 1px solid var(--text-main);
}

.btn-primary:hover {
  background-color: #ffffff;
}

.btn-secondary {
  background-color: var(--bg-surface-elevated);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background-color: var(--border-strong);
  border-color: var(--border-active);
}

.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  min-height: 44px;
  transition: all 0.15s ease;
}

.filter-btn:hover {
  color: var(--text-main);
  border-color: var(--border-strong);
}

.filter-btn.active {
  background-color: var(--bg-surface-elevated);
  border-color: var(--tag-sky-border);
  color: var(--text-main);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.project-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.15s ease;
}

.project-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.project-thumb-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #06070a;
  overflow: hidden;
}

.project-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.2s ease;
}

.project-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-body .card-title {
  font-size: 1.125rem;
  margin-bottom: 8px;
}

.project-body .card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  flex: 1;
}

.project-footer {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.about-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
}

.about-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.about-card p + p {
  margin-top: 10px;
}

.tools-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.tool-chip {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding: 4px 10px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
}

.contact-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.contact-text h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.contact-text p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.contact-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  padding-top: 30px;
  padding-bottom: 30px;
  background-color: #07080b;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 14px;
}

.footer-nav {
  display: flex;
  gap: 16px;
}

.footer-nav a:hover {
  color: var(--text-main);
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
}

.empty-state p {
  margin-top: 6px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

@media (max-width: 860px) {
  .featured-card {
    grid-template-columns: 1fr;
  }
  
  .featured-media {
    aspect-ratio: 16 / 9;
  }

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

@media (max-width: 680px) {
  .header-inner {
    height: auto;
    padding-top: 12px;
    padding-bottom: 12px;
    flex-wrap: wrap;
    gap: 12px;
  }

  .site-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 4px;
    gap: 6px;
  }

  .nav-link {
    padding: 6px 10px;
    font-size: 0.875rem;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-headline {
    font-size: 1rem;
  }

  .featured-content {
    padding: 20px;
  }

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

  .contact-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .contact-links {
    width: 100%;
  }

  .contact-links .btn-action {
    flex: 1;
    justify-content: center;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 3px;
  gap: 2px;
  min-height: 44px;
}

.lang-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}

.lang-btn:hover {
  color: var(--text-main);
  background-color: var(--bg-surface-hover);
}

.lang-btn.active {
  background-color: var(--bg-surface-elevated);
  color: var(--tag-sky-text);
  border-color: var(--border-active);
}

.lang-divider {
  color: var(--border-strong);
  font-size: 0.75rem;
  user-select: none;
}

.skeleton {
  background: linear-gradient(90deg, #13161f 25%, #1f2535 50%, #13161f 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite ease-in-out;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .skeleton {
    animation: none;
    background: #191d29;
  }
}

.skeleton-text {
  height: 14px;
  margin-bottom: 8px;
}

.skeleton-text.short {
  width: 35%;
}

.skeleton-text.medium {
  width: 70%;
}

.skeleton-text.full {
  width: 100%;
}

.skeleton-title {
  height: 24px;
  width: 60%;
  margin-bottom: 12px;
}

.skeleton-pill {
  height: 22px;
  width: 70px;
  border-radius: var(--radius-full);
}

.skeleton-btn {
  height: 36px;
  width: 110px;
  border-radius: var(--radius-sm);
}

.skeleton-media {
  width: 100%;
  aspect-ratio: 16 / 9;
}

.featured-skeleton {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background-color: var(--bg-surface);
  overflow: hidden;
}

@media (min-width: 768px) {
  .featured-skeleton {
    grid-template-columns: 1.1fr 1fr;
  }
}

.featured-skeleton-content {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.featured-skeleton-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.featured-skeleton-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.project-skeleton {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-skeleton-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-skeleton-tags {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
}

.project-skeleton-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  gap: 10px;
}

.project-thumb-wrapper,
.featured-media {
  position: relative;
  background: linear-gradient(90deg, #13161f 25%, #1f2535 50%, #13161f 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite ease-in-out;
}

.project-thumb-wrapper.is-loaded,
.featured-media.is-loaded {
  animation: none;
  background: #0d1017;
}

.project-thumb,
.featured-media img {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.project-thumb.is-loaded,
.featured-media img.is-loaded {
  opacity: 1;
}