:root {
  --color-bg: #0a0a0b;
  --color-surface: #111113;
  --color-surface-elevated: #18181b;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);
  --color-text: #fafafa;
  --color-text-secondary: #a1a1aa;
  --color-text-muted: #71717a;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-accent-subtle: rgba(59, 130, 246, 0.08);
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 6rem;
  --spacing-3xl: 10rem;
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-micro: 280ms;
  --duration-hover: 500ms;
  --duration-reveal: 800ms;
  --duration-image: 900ms;
  --duration-accent: 880ms;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.25);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 12px;
  left: 12px;
  right: 12px;
  bottom: 12px;
  border: 1px solid rgba(113, 113, 122, 0.1);
  border-radius: var(--radius-lg);
  pointer-events: none;
  z-index: 9999;
  opacity: 0;
  animation: borderFadeIn 1200ms var(--ease-out) 0.5s forwards;
}

body::after {
  content: '';
  position: fixed;
  top: 12px;
  left: 12px;
  right: 12px;
  bottom: 12px;
  border-radius: var(--radius-lg);
  pointer-events: none;
  z-index: 9998;
  background: 
    radial-gradient(ellipse 80px 80px at 12px 12px, rgba(59, 130, 246, 0.06), transparent),
    radial-gradient(ellipse 80px 80px at calc(100% - 12px) 12px, rgba(59, 130, 246, 0.06), transparent),
    radial-gradient(ellipse 80px 80px at 12px calc(100% - 12px), rgba(59, 130, 246, 0.06), transparent),
    radial-gradient(ellipse 80px 80px at calc(100% - 12px) calc(100% - 12px), rgba(59, 130, 246, 0.06), transparent);
  opacity: 0;
  animation: borderFadeIn 1200ms var(--ease-out) 0.8s forwards;
}

@keyframes borderFadeIn {
  to { opacity: 1; }
}

#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.page-content,
.nav,
.footer {
  position: relative;
  z-index: 1;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 600; }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

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

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container--narrow { max-width: 720px; }

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

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--spacing-md) 0;
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transform: translateY(0);
  transition: transform var(--duration-reveal) var(--ease-out) 120ms,
              border-color var(--duration-hover) var(--ease-out);
}

.nav--hidden { transform: translateY(-100%); }
.nav--scrolled { border-bottom-color: var(--color-border); }

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

.nav__logo {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav__link {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: color var(--duration-hover) var(--ease-out);
  position: relative;
}

.nav__link:hover {
  color: var(--color-text);
}

.nav__link:hover::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent-subtle);
  border-radius: 1px;
}

.nav__link--active {
  color: var(--color-text);
  position: relative;
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-xs);
}

.nav__toggle span {
  width: 20px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--duration-micro) var(--ease-out);
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--spacing-3xl);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, transparent 40%, rgba(10, 10, 11, 0.4) 100%);
  pointer-events: none;
  z-index: 0;
}

.hero__accent {
  position: absolute;
  top: 20%;
  right: 10%;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: var(--color-accent-subtle);
  border: 1px solid rgba(59, 130, 246, 0.12);
  opacity: 0;
  transform: scale(0.96);
  animation: accentReveal var(--duration-accent) var(--ease-out) 0.2s forwards;
  pointer-events: none;
}

.hero__accent::before {
  content: '';
  position: absolute;
  top: -16px;
  left: -16px;
  right: -16px;
  bottom: -16px;
  border-radius: 50%;
  border: 1px solid rgba(59, 130, 246, 0.06);
  opacity: 0;
  animation: accentReveal 900ms var(--ease-out) 0.35s forwards;
}

@keyframes accentReveal {
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.hero__content {
  max-width: 640px;
  position: relative;
  z-index: 1;
}

.hero__greeting {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.1s forwards;
}

.hero__title {
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-accent) var(--ease-out) 0.1s forwards;
}

.hero__subtitle {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 540px;
  margin-bottom: var(--spacing-lg);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.22s forwards;
}

.hero__links {
  display: flex;
  gap: var(--spacing-md);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.32s forwards;
}

.hero__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color 280ms var(--ease-out);
}

.hero__link:hover { color: var(--color-accent); }
.hero__link svg { width: 20px; height: 20px; }

.section-header { margin-bottom: var(--spacing-xl); }

.section-label {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.section-title { color: var(--color-text); }

.featured-project { padding: var(--spacing-3xl) 0; }

.project-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  opacity: 0;
  transform: translateY(14px);
  transition: transform var(--duration-hover) var(--ease-out),
              box-shadow var(--duration-hover) var(--ease-out),
              border-color var(--duration-hover) var(--ease-out),
              opacity var(--duration-reveal) var(--ease-out);
  will-change: transform, opacity;
}

.project-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.project-card:hover {
  transform: translateY(-3px);
  box-shadow: 
    0 16px 48px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(59, 130, 246, 0.08),
    0 0 40px -10px rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.15);
}

.project-card--featured {
  display: grid;
  grid-template-columns: 1fr;
}

.project-card__image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-surface-elevated);
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-image) var(--ease-out);
}

.project-card:hover .project-card__image img {
  transform: scale(1.05);
}

.project-card__content { padding: var(--spacing-lg); }

.project-card__title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.project-card__description {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.project-card__tech span {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  background: var(--color-surface-elevated);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.project-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.9rem;
  color: var(--color-text);
  transition: color var(--duration-hover) var(--ease-out);
}

.project-card__cta:hover { color: var(--color-text); }

.project-card__cta svg {
  width: 16px;
  height: 16px;
  transition: transform var(--duration-hover) var(--ease-out);
}

.project-card:hover .project-card__cta svg {
  transform: translateX(5px);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.projects-grid .project-card {
  transition-delay: calc(var(--index, 0) * 100ms);
}

.projects-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.project-item {
  display: block;
  padding: var(--spacing-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  opacity: 0;
  transform: translateY(14px);
  transition: transform var(--duration-hover) var(--ease-out),
              box-shadow var(--duration-hover) var(--ease-out),
              border-color var(--duration-hover) var(--ease-out),
              opacity var(--duration-reveal) var(--ease-out);
  will-change: transform, opacity;
}

.project-item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.project-item:hover {
  transform: translateY(-3px);
  box-shadow: 
    0 16px 48px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(59, 130, 246, 0.08),
    0 0 40px -10px rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.15);
}

.project-item__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-sm);
}

.project-item__title {
  font-size: 1.25rem;
  color: var(--color-text);
}

.project-item__arrow {
  color: var(--color-text-muted);
  transition: transform var(--duration-hover) var(--ease-out),
              color var(--duration-hover) var(--ease-out);
}

.project-item:hover .project-item__arrow {
  transform: translate(5px, -5px);
  color: var(--color-text);
}

.project-item__description {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.project-item__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.project-item__tech span {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
}

.project-item__tech span:not(:last-child)::after {
  content: '·';
  margin-left: var(--spacing-xs);
}

.case-study-hero {
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  text-align: center;
}

.case-study-hero__title {
  margin-bottom: var(--spacing-md);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.08s forwards;
}

.case-study-hero__meta {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.2s forwards;
  margin-bottom: var(--spacing-md);
}

.case-study-hero .case-study-repo {
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.32s forwards;
}

.case-study-image {
  margin: var(--spacing-2xl) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--duration-reveal) var(--ease-out),
              transform var(--duration-reveal) var(--ease-out);
  will-change: transform, opacity;
}

.case-study-image.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.case-study-image img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.case-study-section {
  margin-bottom: var(--spacing-2xl);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--duration-reveal) var(--ease-out),
              transform var(--duration-reveal) var(--ease-out);
  will-change: transform, opacity;
}

.case-study-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.case-study-section__title {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.case-study-section__content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.case-study-section__content p + p { margin-top: var(--spacing-md); }

.case-study-section[data-narrative="problem"] {
  transition-duration: 900ms;
}

.case-study-section[data-narrative="problem"] .case-study-section__content p {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 900ms var(--ease-out),
              transform 900ms var(--ease-out);
}

.case-study-section[data-narrative="problem"].is-visible .case-study-section__content p {
  opacity: 1;
  transform: translateY(0);
}

.case-study-section[data-narrative="problem"].is-visible .case-study-section__content p:nth-child(2) {
  transition-delay: 100ms;
}

.case-study-section[data-narrative="solution"] {
  transition-duration: 700ms;
}

.case-study-section[data-narrative="implementation"] {
  transition-duration: 800ms;
}

.case-study-section[data-narrative="outcome"] {
  transition-duration: 700ms;
}

.case-study-section[data-narrative="outcome"] .case-study-section__content {
  transition-delay: 60ms;
}

.case-study-image[data-narrative="visual"] {
  transition-delay: 100ms;
}

.case-study-back {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--duration-reveal) var(--ease-out),
              transform var(--duration-reveal) var(--ease-out),
              color var(--duration-hover) var(--ease-out);
}

.case-study-back.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.case-study-back:hover {
  color: var(--color-text);
}

.case-study-back svg {
  width: 18px;
  height: 18px;
  transition: transform var(--duration-hover) var(--ease-out);
}

.case-study-repo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--duration-reveal) var(--ease-out),
              transform var(--duration-reveal) var(--ease-out),
              color 280ms var(--ease-out);
}

.case-study-repo.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.case-study-repo:hover {
  color: var(--color-accent);
}

.case-study-repo span {
  transition: transform 280ms var(--ease-out);
  display: inline-block;
}

.case-study-repo:hover span {
  transform: translateX(5px);
}

.case-study-back:hover svg {
  transform: translateX(-5px);
}

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

.about-intro { max-width: 640px; }

.about-intro__title {
  margin-bottom: var(--spacing-md);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.1s forwards;
}

.about-intro__text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.2s forwards;
}

.about-section {
  padding: var(--spacing-2xl) 0;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--duration-reveal) var(--ease-out),
              transform var(--duration-reveal) var(--ease-out);
  will-change: transform, opacity;
}

.about-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.about-section__title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

.about-section__content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.about-section__aside {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-top: var(--spacing-lg);
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.skill-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  transition: color var(--duration-hover) var(--ease-out),
              border-color var(--duration-hover) var(--ease-out);
}

.skill-pill:hover {
  color: var(--color-text);
  border-color: var(--color-border-hover);
}

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

.contact-content { max-width: 540px; }

.contact-title {
  margin-bottom: var(--spacing-md);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.1s forwards;
}

.contact-text {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.2s forwards;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.125rem;
  color: var(--color-text);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.3s forwards;
  transition: border-color var(--duration-hover) var(--ease-out),
              box-shadow var(--duration-hover) var(--ease-out);
}

.contact-link:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-md);
}

.contact-link svg {
  width: 20px;
  height: 20px;
  transition: transform var(--duration-hover) var(--ease-out);
}

.contact-link:hover svg { transform: translateX(5px); }

.contact-form {
  opacity: 0;
  transform: translateY(14px);
  animation: fadeInUp var(--duration-reveal) var(--ease-out) 0.35s forwards;
}

.form-group { margin-bottom: var(--spacing-md); }

.form-label {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--duration-hover) var(--ease-out);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

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

.form-button {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-accent);
  border-radius: var(--radius-md);
  transition: transform var(--duration-accent) var(--ease-out),
              background-color var(--duration-accent) var(--ease-out),
              box-shadow var(--duration-hover) var(--ease-out);
}

.form-button:hover {
  transform: translateY(-3px);
  background: var(--color-accent-hover);
  box-shadow: var(--shadow-sm);
}

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

.btn-secondary:hover {
  color: var(--color-text);
  background: transparent;
  border-color: var(--color-border-hover);
  transform: translateY(-3px);
  box-shadow: none;
}

.footer {
  padding: var(--spacing-2xl) 0;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
  text-align: center;
}

.footer__text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer__links {
  display: flex;
  gap: var(--spacing-md);
}

.footer__link {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: color var(--duration-hover) var(--ease-out);
}

.footer__link:hover { color: var(--color-text); }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-content {
  opacity: 0;
  animation: fadeIn var(--duration-reveal) var(--ease-out) forwards;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (min-width: 640px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .nav__toggle { display: none; }
  
  .project-card--featured {
    grid-template-columns: 1fr 1fr;
  }
  
  .project-card--featured .project-card__content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-xl);
  }
  
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

@media (max-width: 767px) {
  .nav__links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    background: var(--color-bg);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-hover) var(--ease-out),
                visibility var(--duration-hover) var(--ease-out);
  }
  
  .nav__links--open {
    opacity: 1;
    visibility: visible;
  }
  
  .nav__links--open .nav__link { font-size: 1.5rem; }
  
  .nav__toggle {
    display: flex;
    position: relative;
    z-index: 101;
  }
  
  .nav__toggle--active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav__toggle--active span:nth-child(2) { opacity: 0; }
  
  .nav__toggle--active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
}

::selection {
  background-color: rgba(255, 255, 255, 0.15);
  color: var(--color-text);
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.15);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  #particle-canvas {
    display: none;
  }
  
  body::before,
  body::after {
    opacity: 1 !important;
    animation: none !important;
  }
  
  .project-card:hover,
  .project-item:hover {
    box-shadow: var(--shadow-hover) !important;
  }
  
  .hero__greeting,
  .hero__title,
  .hero__subtitle,
  .hero__links,
  .hero__accent,
  .case-study-hero__title,
  .case-study-hero__meta,
  .case-study-repo,
  .case-study-back,
  .about-intro__title,
  .about-intro__text,
  .contact-title,
  .contact-text,
  .contact-link,
  .contact-form,
  .page-content,
  .project-card,
  .project-item,
  .case-study-image,
  .case-study-section,
  .about-section {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
  }
}