@font-face {
  font-family: 'Geist';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('fonts/geist-variable.ttf') format('truetype');
}

/* ─── Catppuccin Mocha ─────────────────────────────────── */
:root {
  --font-body: 'Geist', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --base: #1e1e2e;
  --mantle: #181825;
  --crust: #11111b;
  --surface0: #313244;
  --surface1: #45475a;
  --surface2: #585b70;
  --overlay0: #6c7086;
  --overlay1: #7f849c;
  --overlay2: #9399b2;
  --text: #cdd6f4;
  --subtext0: #a6adc8;
  --subtext1: #bac2de;
  --lavender: #b4befe;
  --blue: #89b4fa;
  --sapphire: #74c7ec;
  --sky: #89dceb;
  --teal: #94e2d5;
  --green: #a6e3a1;
  --yellow: #f9e2af;
  --peach: #fab387;
  --maroon: #eba0ac;
  --red: #f38ba8;
  --mauve: #cba6f7;
  --pink: #f5c2e7;
  --flamingo: #f2cdcd;
  --rosewater: #f5e0dc;
}

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

html {
  scroll-behavior: smooth;
}

[hidden] {
  display: none !important;
}

body {
  background: var(--base);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

.nav-links,
.mobile-nav-links,
.v-year,
.v-current-badge,
.tag,
.card-date,
.project-status,
.card-source,
.card-action,
.project-count,
footer {
  font-family: var(--font-mono);
}

::selection {
  background: var(--mauve);
  color: var(--crust);
}

:focus-visible {
  outline: 2px solid var(--mauve);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 50%;
  z-index: 200;
  padding: 0.6rem 1rem;
  border-radius: 4px;
  background: var(--mauve);
  color: var(--crust);
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
  transform: translate(-50%, -200%);
  transition: transform 0.2s;
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

/* ─── Scrollbar ────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--surface1);
  border-radius: 3px;
}

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

/* ─── Nav ──────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3rem;
  height: 56px;
  background: rgba(17, 17, 27, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--surface0);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-family: 'Fraunces', serif;
  font-size: 1.3rem;
  color: var(--mauve);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a,
.mobile-nav-links a {
  display: flex;
  align-items: center;
  min-height: 44px;
  color: var(--subtext0);
  text-decoration: none;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 0.3em;
  transition:
    color 0.2s,
    text-decoration-color 0.2s;
  position: relative;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.mobile-nav-links a:hover,
.mobile-nav-links a:focus-visible {
  color: var(--mauve);
  text-decoration-color: currentColor;
}

.nav-links a.is-active,
.mobile-nav-links a.is-active {
  color: var(--mauve);
}

.nav-menu {
  display: none;
  position: relative;
}

.nav-menu summary {
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  color: var(--text);
  cursor: pointer;
}

.mobile-nav-links {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  width: 180px;
  padding: 0.5rem 1rem;
  background: var(--mantle);
  border: 1px solid var(--surface1);
  border-radius: 8px;
  list-style: none;
}

/* ─── Sections ─────────────────────────────────────────── */
section {
  padding: clamp(4rem, 7vw, 6rem) 3rem;
  max-width: 1100px;
  margin: 0 auto;
  scroll-margin-top: 56px;
}

section.full-width {
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

/* ─── Hero ─────────────────────────────────────────────── */
#hero {
  padding-top: 6rem;
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.hero-copy {
  min-width: 0;
  max-width: 750px;
}

.hero-name {
  font-family: 'Fraunces', serif;
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 600;
  line-height: 1.1;
  padding-bottom: 0.1em;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.hero-name em {
  font-style: italic;
  color: var(--mauve);
}

.hero-subtitle {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  color: var(--subtext1);
  margin-bottom: 1rem;
}

.hero-desc {
  max-width: 560px;
  color: var(--subtext0);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.hero-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  gap: 0.5rem;
  padding: 0.6rem 1.4rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--mauve);
  color: var(--crust);
}

.btn-primary:hover {
  background: var(--mauve);
  filter: brightness(1.05);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--surface1);
}

.btn-ghost:hover {
  border-color: var(--mauve);
  color: var(--mauve);
  transform: translateY(-2px);
}

.btn:active,
.filter-chip:active,
.projects-more-btn:active {
  transform: scale(0.98);
}

/* ─── About ────────────────────────────────────────────── */
.about-lead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 176px;
  align-items: center;
  gap: 3rem;
  margin-top: 1.5rem;
}

.about-portrait {
  grid-column: 2;
  grid-row: 1;
  display: block;
  width: 176px;
  height: auto;
  border-radius: 8px;
}

.about-intro {
  grid-column: 1;
  grid-row: 1;
  max-width: 60ch;
  font-size: 1.1rem;
  color: var(--subtext1);
  line-height: 1.75;
}

.about-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 3rem;
  align-items: start;
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.about-block h3,
.about-subheading {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.about-block p {
  color: var(--subtext0);
  font-size: 1rem;
  line-height: 1.75;
}

.about-block p strong {
  color: var(--text);
  font-weight: 700;
}

.about-block p em {
  color: var(--mauve);
  font-style: italic;
}

.about-block p s {
  color: var(--overlay1);
}

.version-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.version-timeline::before {
  content: '';
  position: absolute;
  left: 0.65rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 1px;
  background: var(--surface1);
}

.version-item {
  display: flex;
  gap: 1.25rem;
  padding: 1rem 0;
  position: relative;
}

.v-dot {
  width: 1.3rem;
  height: 1.3rem;
  border-radius: 50%;
  background: var(--surface0);
  border: 2px solid var(--surface1);
  flex-shrink: 0;
  margin-top: 0.15rem;
  transition:
    border-color 0.2s,
    background 0.2s;
  position: relative;
  z-index: 1;
}

.v-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.15rem;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 0.3em;
  transition:
    color 0.2s,
    text-decoration-color 0.2s;
}

.v-year {
  font-size: 0.7rem;
  color: var(--mauve);
  margin-bottom: 0.3rem;
  letter-spacing: 0.05em;
}

.v-desc {
  font-size: 0.95rem;
  color: var(--subtext0);
  line-height: 1.6;
}

.version-item--link {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.version-item--link:hover .v-title,
.version-item--link:focus-visible .v-title {
  color: var(--mauve);
  text-decoration-color: currentColor;
}

.v-link-arrow {
  font-size: 0.7rem;
  color: var(--overlay1);
  margin-left: 0.3rem;
  transition:
    color 0.2s,
    transform 0.2s;
  display: inline-block;
}

.version-item--link:hover .v-link-arrow,
.version-item--link:focus-visible .v-link-arrow {
  color: var(--mauve);
  transform: translate(2px, -2px);
}

.v-dot--current {
  border-color: var(--mauve);
  background: var(--mauve);
}

.v-current-badge {
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(203, 166, 247, 0.15);
  color: var(--mauve);
  padding: 0.1rem 0.45rem;
  border-radius: 3px;
  margin-left: 0.4rem;
  vertical-align: middle;
  font-weight: 700;
}

/* ─── Skills ───────────────────────────────────────────── */
#skills h2 {
  margin-bottom: 3rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3rem 4rem;
}

.skill-card {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.75rem 1rem;
  align-content: start;
}

.skill-card-icon {
  display: block;
  align-self: center;
}

.skill-card-icon-image {
  width: 1.75rem;
  height: 1.75rem;
  display: block;
}

.skill-card h3 {
  align-self: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.skill-card p,
.skill-card .tag-row {
  grid-column: 2;
}

.skill-card .tag-row {
  margin-top: 0.25rem;
}

.skill-card p {
  font-size: 0.95rem;
  color: var(--subtext0);
  line-height: 1.7;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}

.tag {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 3px;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  font-weight: 700;
  background: var(--surface0);
  color: var(--subtext1);
}

/* ─── Tutorials / Projects shared ─────────────────────── */
.section-heading {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.section-intro {
  color: var(--subtext0);
  font-size: 1rem;
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 3rem;
}

.projects-subheading {
  margin: 0 0 0.9rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--subtext1);
}

.card-grid.card-grid--featured {
  margin-bottom: 3rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  background: transparent;
  border: none;
  border-radius: 0;
  overflow: visible;
}

.card-grid--featured .card.featured-card {
  padding: 0;
  gap: 0;
  border-radius: 8px;
  background: transparent;
}

.project-preview {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--surface0);
  border-radius: 8px;
  transition: border-color 0.2s;
}

.featured-card-content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem 0.25rem 0;
  flex: 1;
}

.featured-card .card-title {
  font-size: 1.35rem;
}

.featured-card .tag-row {
  margin-top: 0;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  margin-top: 0.75rem;
}

.featured-card:hover .project-preview,
.featured-card:has(.card-title:focus-visible) .project-preview {
  border-color: var(--mauve);
}

#projects .section-intro {
  margin-bottom: 1.8rem;
  max-width: 640px;
}

#project-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

#project-grid .card {
  padding: 1.2rem;
}

.project-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border: none;
  padding: 0;
  min-width: 0;
  margin-bottom: 1.25rem;
}

.filter-chip {
  border: 1px solid var(--surface1);
  background: var(--mantle);
  color: var(--subtext0);
  border-radius: 999px;
  min-height: 44px;
  padding: 0.5rem 0.9rem;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all 0.2s;
}

.filter-chip:hover {
  border-color: var(--mauve);
  color: var(--text);
}

.filter-chip.active {
  background: rgba(203, 166, 247, 0.18);
  border-color: rgba(203, 166, 247, 0.7);
  color: var(--mauve);
}

.project-count {
  color: var(--subtext0);
  font-size: 0.8rem;
  margin-bottom: 1rem;
}

.projects-empty {
  padding: 2rem 0;
}

.projects-empty p {
  color: var(--subtext0);
  margin: 0.5rem 0 1rem;
}

.projects-more-row {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
}

.projects-more-btn {
  border: 1px solid var(--surface1);
  background: var(--mantle);
  color: var(--subtext0);
  border-radius: 999px;
  min-height: 44px;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all 0.2s;
}

.projects-more-btn:hover {
  border-color: var(--mauve);
  color: var(--text);
}

/* ─── Card grid ────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1px;
  background: var(--surface0);
  border: 1px solid var(--surface0);
  border-radius: 8px;
  overflow: hidden;
}

.card {
  background: var(--mantle);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}

.card-date {
  font-size: 0.75rem;
  color: var(--subtext0);
  letter-spacing: 0.06em;
}

.project-status {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.7rem;
  font-weight: 400;
}

.project-status--active {
  color: var(--subtext0);
}

.card-title {
  display: block;
  min-height: 44px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  transition:
    color 0.2s,
    text-decoration-color 0.2s;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 0.18em;
}

/* Stretch the native title link over the card, below secondary links. */
.card-title::after {
  content: '';
  position: absolute;
  inset: 0;
}

.card:has(.card-title:focus-visible) {
  box-shadow: inset 0 0 0 2px var(--mauve);
}

.card:has(.card-title:focus-visible) .card-title {
  outline: none;
}

.card-action {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--mauve);
}

.card:hover .card-title,
.card:has(.card-title:focus-visible) .card-title {
  color: var(--mauve);
  text-decoration-color: currentColor;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--subtext0);
  line-height: 1.6;
  flex: 1;
}

.card-source {
  font-size: 0.75rem;
  color: var(--subtext0);
  letter-spacing: 0.04em;
}

.card-source a {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 0.25rem;
  color: var(--mauve);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.card-source a:hover {
  color: var(--mauve);
}

.card-desc a {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--mauve);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.card-desc a:hover {
  color: var(--mauve);
}

/* ─── Contact ──────────────────────────────────────────── */
#contact {
  padding-bottom: 6rem;
}

.contact-inner {
  max-width: 720px;
}

.contact-inner h2 {
  font-size: clamp(2rem, 4vw, 2.4rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: var(--text);
  margin-bottom: 1rem;
}

.contact-inner p {
  color: var(--subtext0);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.contact-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin-top: 2rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 44px;
}

.contact-link--secondary {
  color: var(--subtext1);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s;
}

.contact-link--secondary:hover {
  color: var(--mauve);
}

.contact-link-icon {
  width: 1.125rem;
  height: 1.125rem;
  flex: 0 0 1.125rem;
  background: currentColor;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  -webkit-mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  mask-size: contain;
}

.contact-link-icon--github {
  -webkit-mask-image: url('icons/github.svg');
  mask-image: url('icons/github.svg');
}

.contact-link-icon--linkedin {
  -webkit-mask-image: url('icons/linkedin.svg');
  mask-image: url('icons/linkedin.svg');
}

/* ─── Footer ───────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--surface0);
  padding: 1.5rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  color: var(--subtext0);
}

footer a {
  color: var(--mauve);
  text-decoration: none;
}

footer a:hover {
  color: var(--mauve);
}

/* ─── Animations ───────────────────────────────────────── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-copy {
    animation: fadeUp 0.6s both;
  }

  .reveal-pending {
    opacity: 0;
    transform: translateY(16px);
    transition:
      opacity 0.4s ease,
      transform 0.4s ease;
  }
}

.reveal.visible,
.reveal:focus-within {
  opacity: 1;
  transform: none;
}

/* ─── Responsive ───────────────────────────────────────── */
@media (max-width: 768px) {
  nav {
    padding: 0 1.5rem;
  }

  .nav-links {
    gap: 1.2rem;
  }

  section {
    padding: 4rem 1.5rem;
  }

  #hero {
    padding: 5rem 1.5rem 2.5rem;
  }

  .hero-links {
    gap: 0.75rem;
  }

  .hero-links .btn {
    padding: 0.6rem 0.9rem;
    font-size: 0.75rem;
  }

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

  #project-grid {
    grid-template-columns: 1fr;
  }

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

  .about-lead {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .about-portrait {
    grid-column: auto;
    grid-row: auto;
    width: 128px;
  }

  .about-intro {
    grid-column: auto;
    grid-row: auto;
  }

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

  .skill-card p,
  .skill-card .tag-row {
    grid-column: 1 / -1;
  }

  .hero-name {
    font-size: clamp(2.5rem, 10vw, 3.5rem);
  }

  footer {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

@media (max-width: 540px) {
  .nav-links {
    display: none;
  }

  .nav-menu {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    scroll-behavior: auto !important;
    transition: none !important;
  }

  .reveal,
  .hero-copy {
    opacity: 1;
    transform: none;
  }

  .btn,
  .filter-chip,
  .projects-more-btn,
  .contact-link,
  .v-link-arrow {
    transform: none !important;
  }
}