:root {
  --primary: #8b5cf6;
  --primary-dark: #7c3aed;
  --primary-light: #a78bfa;
  --bg-dark: #0a0a0a;
  --surface-dark: #111113;
  --text-primary: #e5e7eb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(139, 92, 246, 0.35);
  --card-bg: rgba(255, 255, 255, 0.03);
  --card-bg-hover: rgba(15, 15, 15, 0.72);
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 40px;
  --spacing-3xl: 60px;
  --spacing-4xl: 80px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --radius-xl: 18px;
  --radius-full: 999px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --font-family: 'Inter', sans-serif;
  --line-height-tight: 1.2;
  --line-height-normal: 1.6;
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--primary-light) var(--card-bg);
}

body {
  min-height: 100vh;
  font-family: var(--font-family);
  color: var(--text-primary);
  background:
    radial-gradient(circle at 50% 40%, rgba(139, 92, 246, 0.12), transparent 60%),
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    var(--bg-dark);
  background-size: cover, 64px 64px, 64px 64px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
}

::selection {
  background-color: var(--primary);
  color: var(--bg-dark);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  width: 100%;
}

.navbar {
  width: 100%;
  padding: var(--spacing-lg) 0;
  position: relative;
  z-index: 10;
}

.nav-shell {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.logo {
  font-weight: 800;
  font-size: 20px;
}

.logo a {
  text-decoration: none;
  color: #d1d5db;
  transition: var(--transition-base);
}

.logo a:hover,
.logo a.active {
  color: var(--primary-light);
}

.nav-links {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links a {
  text-decoration: none;
  color: #d1d5db;
  font-weight: 500;
  transition: var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-light);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.hero {
  padding: 100px 0 var(--spacing-3xl);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.7fr);
  align-items: center;
  gap: var(--spacing-xl);
}

.photo {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1em;
}

.photo img {
  width: min(335px, 100%);
  aspect-ratio: 335 / 408;
  object-fit: cover;
  border-radius: 1em;
  border: 3px solid var(--primary);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.photo img:hover {
  box-shadow: 0 0 50px var(--primary-light);
  transform: scale(1.04);
}

.intro {
  color: var(--text-secondary);
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.5rem);
  font-weight: 800;
  margin: var(--spacing-sm) 0;
  line-height: var(--line-height-tight);
}

.hero h2 {
  font-size: 20px;
  font-weight: 500;
  color: var(--primary-light);
  margin-bottom: var(--spacing-lg);
}

.bio,
.project-summary,
.page-intro,
.experience-description,
.skill-items,
.card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

.bio,
.intro {
  max-width: 700px;
}

.location {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin: 20px 0;
  color: var(--text-secondary);
}

.buttons,
.project-buttons,
.project-links {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.btn {
  min-height: 48px;
  padding: 12px 24px;
  border-radius: 25px;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  text-align: center;
  cursor: pointer;
  font-size: 16px;
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  border: 2px solid var(--primary-dark);
  color: var(--primary-dark);
  background: transparent;
}

.btn.primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn.primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(139, 92, 246, 0.3);
}

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

.btn.outline:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

.btn.btn-secondary {
  border: 1px solid var(--primary);
  color: var(--primary-light);
}

.btn.btn-secondary:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
  background-color: #111;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  margin-bottom: var(--spacing-2xl);
}

.page-title {
  font-size: clamp(2.35rem, 5vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: var(--line-height-tight);
}

.page-intro {
  font-size: 18px;
  margin-bottom: 3rem;
  max-width: 800px;
}

.card,
.project-card,
.experience-item,
.skill-category {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: var(--transition-base);
}

.card {
  margin-top: var(--spacing-3xl);
  padding: var(--spacing-xl);
}

.card h2,
.experience-title,
.skill-category-title {
  margin-top: 0;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  font-weight: 700;
}

.project-card:hover,
.experience-item:hover,
.skill-category:hover,
.feature-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 12px 30px rgba(139, 92, 246, 0.15);
}

.project-card {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.project-card h3 {
  margin-top: 0;
}

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

.project-buttons {
  margin-top: auto;
}

.project-buttons .btn {
  width: 100%;
}

.btn.watch {
  border-color: rgba(239, 68, 68, 0.4);
  color: #f87171;
}

.btn.watch:hover {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.6);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-xl);
}

.features-grid,
.fm-challenges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.tags,
.tech-list,
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin: var(--spacing-md) 0;
}

.tags span,
.tech-list span,
.project-tags .tag {
  background: var(--card-bg);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 13px;
  color: #e6e6ea;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tags span:hover,
.tech-list span:hover {
  background: rgba(139, 92, 246, 0.2);
  transform: translateY(-2px);
}

.feature-card {
  padding: 20px 24px 20px 48px;
  background: var(--card-bg);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  line-height: 1.7;
  position: relative;
  transition: var(--transition-base);
}

.feature-card::before {
  content: "✓";
  position: absolute;
  left: 18px;
  top: 18px;
  color: var(--primary-light);
  font-weight: bold;
  font-size: 16px;
}

.fm-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(14px);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.fm-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

.fm-card-thumbnail {
  position: relative;
  overflow: hidden;
  background: var(--surface-dark);
}

.fm-card-thumbnail img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.fm-card:hover img {
  transform: scale(1.08);
}

.fm-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.85));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  opacity: 0;
  transition: var(--transition-base);
}

.fm-card:hover .fm-card-overlay,
.fm-card:focus-within .fm-card-overlay {
  opacity: 1;
}

.fm-overlay-btn {
  padding: 10px 18px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  text-decoration: none;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.fm-overlay-btn:hover {
  background: #7c7cff;
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(124, 124, 255, 0.3);
}

.fm-btn-source:hover {
  background: #111;
}

.fm-card-content {
  padding: 1.2rem 1.4rem 1.5rem;
}

.fm-card-content a {
  text-decoration: none;
}

.fm-card-content a:hover {
  text-decoration: underline;
  color: #fff;
}

.fm-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.6rem;
}

.fm-tech-icons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.78rem;
}

.fm-tech-icons span {
  color: #d1d5db;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 4px 8px;
}

.projects,
.projects-page,
.experience-page {
  width: 100%;
  padding: var(--spacing-4xl) 0;
}

.project-page,
.project-detail-page {
  max-width: 1200px;
  margin: auto;
  padding: 120px var(--spacing-lg);
  position: relative;
  z-index: 2;
}

.project-hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.5rem);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.project-meta,
.experience-org,
.experience-subtitle {
  color: var(--primary-light);
  font-weight: 500;
  margin-bottom: var(--spacing-md);
  font-size: 16px;
}

.project-summary {
  max-width: 700px;
}

.features,
.technologies,
.highlights,
.fm-challenges-section {
  margin-top: var(--spacing-4xl);
}

.features .section-title,
.technologies .section-title,
.highlights .section-title,
.fm-challenges-section .section-title {
  font-size: 32px;
  margin-bottom: var(--spacing-lg);
}

.experience-section {
  margin-bottom: 3rem;
}

.experience-item {
  background: var(--card-bg-hover);
  backdrop-filter: blur(10px);
  margin-bottom: var(--spacing-lg);
}

.experience-title {
  font-size: 1.5rem;
}

.interests-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-sm);
  list-style: none;
}

.interests-list li {
  padding: var(--spacing-sm);
  background: var(--card-bg-hover);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-align: center;
  transition: var(--transition-base);
}

.interests-list li:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  transform: translateY(-2px);
}

.highlights ul {
  list-style: none;
  padding: 0;
  margin-top: var(--spacing-md);
}

.highlights li {
  margin-bottom: var(--spacing-sm);
  padding-left: 18px;
  position: relative;
  color: var(--text-secondary);
  line-height: 1.7;
}

.highlights li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary-light);
  font-size: 20px;
  line-height: 1;
}

.center-btn {
  margin: var(--spacing-4xl) 0 var(--spacing-2xl);
  justify-content: center;
}

.error-message {
  text-align: center;
  padding: var(--spacing-4xl) 0;
}

.error-message p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  font-size: 18px;
}

.site-footer {
  text-align: center;
  padding: var(--spacing-2xl) 20px;
  color: var(--text-muted);
  font-size: 14px;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-links {
  display: flex;
  font-size: 24px;
  gap: var(--spacing-md);
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.footer-links a {
  color: #d1d5db;
  transition: var(--transition-base);
  text-decoration: none;
  display: inline-flex;
}

.footer-links a:hover {
  color: var(--primary-light);
  transform: translateY(-2px);
}

.loading-screen {
  min-height: 65vh;
  display: grid;
  place-items: center;
  padding: var(--spacing-xl);
}

.loading-card {
  width: min(520px, 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  background: var(--card-bg);
}

.skeleton {
  min-height: 18px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.05), rgba(139, 92, 246, 0.22), rgba(255, 255, 255, 0.05));
  background-size: 220% 100%;
  animation: skeleton-pulse 1.25s ease-in-out infinite;
}

.skeleton-title {
  width: 65%;
  min-height: 34px;
  margin-bottom: var(--spacing-lg);
}

.skeleton-line {
  width: 100%;
  margin-top: var(--spacing-sm);
}

.skeleton-line.short {
  width: 72%;
}

@keyframes skeleton-pulse {
  to {
    background-position: -220% 0;
  }
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(139, 92, 246, 0.5);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.project-gallery {
  position: relative;
  width: 100%;
  height: 45vmin;
  min-height: 220px;
  max-height: 450px;
  margin: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, #010101 0%, #0a0a0a 100%);
  overflow: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 8%,
    black 92%,
    transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 8%,
    black 92%,
    transparent 100%
  );
}

.gallery-hint {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.35);
  white-space: nowrap;
  pointer-events: none;
  display: flex;
  align-items: center;
  gap: 6px;
  user-select: none;
  transition: opacity 0.4s ease;
}

.project-gallery:active .gallery-hint {
  opacity: 0;
}

.gallery-hint-icon {
  opacity: 0.6;
}

.project-gallery .swiper {
  width: 100%;
  height: 100%;
  padding: 0 4vmin;
  box-sizing: border-box;
}

.project-gallery .swiper-wrapper {
  align-items: center;
  height: 100%;
}

.project-gallery .swiper-slide {
  width: clamp(320px, 55vmin, 650px) !important;
  height: 85%;
}

.project-gallery .gallery-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: brightness(0.72);
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  pointer-events: none;
  transition: filter 0.4s ease;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  display: block;
}

.project-gallery:hover .gallery-image {
  filter: brightness(0.82);
}

.project-gallery .swiper-slide-active .gallery-image,
.project-gallery:active .gallery-image {
  filter: brightness(0.9);
  box-shadow:
    0 12px 48px rgba(0, 0, 0, 0.65),
    0 0 0 1px rgba(139, 92, 246, 0.18);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 1028px) {
  .projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .hero {
    padding: 72px 0 48px;
  }

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

  .photo {
    display: none;
  }

  .hero h2 {
    font-size: 18px;
  }
}

@media (max-width: 667px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .project-card .project-buttons {
    flex-direction: column;
  }

  .project-card .btn {
    width: 100%;
  }
}

@media (max-width: 560px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .navbar {
    padding: 18px 0;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: relative;
    top: unset;
    left: unset;
    right: unset;
    display: flex;
    align-items: stretch;
    gap: 0;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    background: rgba(10, 10, 10, 0.96);
    backdrop-filter: blur(14px);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px;
    border-radius: var(--radius-sm);
  }

  .nav-links a:hover,
  .nav-links a.active {
    background: rgba(139, 92, 246, 0.12);
  }

  .hero {
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  }

  .hero h2 {
    font-size: 16px;
  }

  .bio {
    font-size: 15px;
  }

  .projects {
    padding: var(--spacing-2xl) 0;
  }

  .feature-card,
  .card,
  .project-card {
    transform: none !important;
  }

  .footer-content {
    flex-direction: column;
  }

  .project-page,
  .project-detail-page {
    padding: var(--spacing-4xl) var(--spacing-md);
  }
}