:root {
  --font-body: 'JetBrains Mono', 'JetBrains Mono NL', Menlo, monospace;
  --font-heading: 'JetBrains Mono', 'JetBrains Mono NL', Menlo, monospace;
  --accent-color: #ff8a3d;
  --bg: #fdf9f3;
  --text: #1b1b1b;
  --muted: #4d4d4d;
  --fg: var(--text);
  --accent: var(--accent-color);
  --border: rgba(27, 27, 27, 0.12);
  --card: rgba(255, 255, 255, 0.78);
  --shadow: 0 16px 40px rgba(20, 20, 20, 0.08);
  --toggle-track: color-mix(in srgb, var(--bg) 82%, var(--accent-color) 18%);
  --toggle-track-border: color-mix(in srgb, var(--accent-color) 30%, rgba(27, 27, 27, 0.18));
  --toggle-track-active: color-mix(in srgb, var(--accent-color) 48%, rgba(255, 255, 255, 0.4));
  --toggle-track-border-active: color-mix(in srgb, var(--accent-color) 68%, transparent);
  --toggle-thumb: #fff7eb;
  --toggle-thumb-active: color-mix(in srgb, var(--accent-color) 32%, #fff1d6 68%);
  --icon-sun: color-mix(in srgb, var(--accent-color) 58%, #ffffff 42%);
  --icon-sun-active: color-mix(in srgb, var(--accent-color) 82%, #ffffff 18%);
  --icon-moon: #1b1b1b;
  --btn-bg: var(--accent-color);
  --btn-fg: #1b1b1b;
  --btn-bg-hover: color-mix(in srgb, var(--accent-color) 85%, #ffe4c9 15%);
  --btn-fg-hover: #1b1b1b;
  --btn-border: color-mix(in srgb, var(--accent-color) 75%, transparent);
  --btn-shadow: 0 12px 24px color-mix(in srgb, var(--accent-color) 28%, transparent);
  --drone-body: #404b63;
  --drone-body-shadow: #2d3547;
  --drone-arm: #5b6478;
  --drone-lens: #7bc4ff;
  --drone-lens-highlight: #e5f3ff;
  --drone-propeller: rgba(71, 82, 107, 0.5);
  --drone-shadow: rgba(18, 21, 27, 0.18);
  --texture-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Cdefs%3E%3Cfilter id='a'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3C/defs%3E%3Crect width='200' height='200' fill='%23f9f2e7'/%3E%3Crect width='200' height='200' filter='url(%23a)' opacity='.08'/%3E%3C/svg%3E");
  --texture-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Cdefs%3E%3Cfilter id='b'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3C/defs%3E%3Crect width='200' height='200' fill='%23131416'/%3E%3Crect width='200' height='200' filter='url(%23b)' opacity='.12'/%3E%3C/svg%3E");
  --texture: var(--texture-light);
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #101113;
  --text: #f3f3f3;
  --muted: #bcbcbc;
  --fg: var(--text);
  --accent-color: #ffb066;
  --accent: var(--accent-color);
  --border: rgba(243, 243, 243, 0.14);
  --card: rgba(16, 17, 19, 0.78);
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.48);
  --toggle-track: color-mix(in srgb, var(--accent-color) 28%, #1b1d20 72%);
  --toggle-track-border: color-mix(in srgb, var(--accent-color) 62%, rgba(255, 255, 255, 0.16));
  --toggle-track-active: color-mix(in srgb, var(--accent-color) 56%, #1c1f22 44%);
  --toggle-track-border-active: color-mix(in srgb, var(--accent-color) 82%, transparent);
  --toggle-thumb: color-mix(in srgb, #1c1f22 84%, #2f3338 16%);
  --toggle-thumb-active: color-mix(in srgb, var(--accent-color) 45%, #1c1f22 55%);
  --icon-sun: rgba(255, 255, 255, 0.45);
  --icon-sun-active: #ffffff;
  --icon-moon: color-mix(in srgb, #050506 85%, #f3f3f3 15%);
  --btn-bg: color-mix(in srgb, var(--accent-color) 85%, #1f1f1f 15%);
  --btn-fg: #111015;
  --btn-bg-hover: color-mix(in srgb, var(--accent-color) 100%, #1f1f1f 5%);
  --btn-fg-hover: #111015;
  --btn-border: color-mix(in srgb, var(--accent-color) 68%, transparent);
  --btn-shadow: 0 14px 28px color-mix(in srgb, var(--accent-color) 32%, transparent);
  --drone-body: #d7deed;
  --drone-body-shadow: #aab3c6;
  --drone-arm: #b9c1d5;
  --drone-lens: #9dd4ff;
  --drone-lens-highlight: #ffffff;
  --drone-propeller: rgba(215, 220, 236, 0.45);
  --drone-shadow: rgba(6, 6, 6, 0.45);
  --texture: var(--texture-dark);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background-color: var(--bg);
  background-image: var(--texture);
  background-repeat: repeat;
  background-size: 280px 280px;
  color: var(--fg);
  line-height: 1.6;
  transition: background-color 0.4s ease, color 0.4s ease, background-image 0.4s ease;
}

img {
  max-width: 100%;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.drone {
  position: fixed;
  top: 0;
  left: 0;
  width: clamp(80px, 10vw, 160px);
  height: clamp(48px, 6vw, 96px);
  pointer-events: none;
  z-index: 60;
  opacity: 0;
  filter: drop-shadow(0 18px 28px color-mix(in srgb, var(--accent-color) 22%, transparent));
}

.drone svg {
  width: 100%;
  height: 100%;
  display: block;
}

.drone-shadow ellipse {
  fill: var(--drone-shadow);
  opacity: 0.65;
  filter: blur(4px);
}

.drone-struts path {
  fill: none;
  stroke: color-mix(in srgb, var(--drone-arm) 85%, var(--drone-body-shadow) 15%);
  stroke-width: 6;
  stroke-linecap: round;
  opacity: 0.82;
}

.drone-rotor {
  transform-box: fill-box;
  transform-origin: center;
}

.drone-rotor .rotor-hub {
  fill: color-mix(in srgb, var(--drone-arm) 75%, var(--drone-body) 25%);
}

.drone-rotor .rotor-blades {
  transform-box: fill-box;
  transform-origin: center;
  animation: rotor-spin 0.45s linear infinite;
}

.drone-rotor .rotor-blades ellipse {
  fill: var(--drone-propeller);
  opacity: 0.8;
}

.drone-body .drone-shell {
  fill: var(--drone-body);
  stroke: color-mix(in srgb, var(--drone-body-shadow) 70%, transparent);
  stroke-width: 1.6;
}

.drone-body .drone-shell-top {
  fill: color-mix(in srgb, var(--drone-body) 55%, var(--drone-body-shadow) 45%);
  stroke: color-mix(in srgb, var(--drone-body-shadow) 70%, transparent);
  stroke-width: 1.4;
}

.drone-body .drone-lens {
  fill: var(--drone-lens);
  stroke: color-mix(in srgb, var(--drone-lens) 25%, #0f1b2d 75%);
  stroke-width: 2.2;
}

.drone-body .drone-lens-highlight {
  fill: var(--drone-lens-highlight);
  opacity: 0.82;
}

.drone-body .drone-detail-line {
  stroke: color-mix(in srgb, var(--drone-body-shadow) 68%, transparent);
  stroke-width: 2.4;
  stroke-linecap: round;
  fill: none;
  opacity: 0.7;
}

.drone-body .drone-front-light {
  fill: var(--accent-color);
  opacity: 0.85;
}

@keyframes rotor-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes resume-hover-bob {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-4px) rotate(-2deg);
  }
}

@keyframes resume-click {
  0% {
    transform: translateY(0) rotate(0deg);
  }
  60% {
    transform: translate(6px, -4px) rotate(-6deg);
  }
  100% {
    transform: translate(2px, -1px) rotate(-2deg);
  }
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus {
  color: var(--accent-color);
}

.container {
  width: min(100%, 96vw);
  max-width: 1800px;
  margin: 0 auto;
  padding-left: clamp(1.5rem, 4vw, 4rem);
  padding-right: clamp(1.5rem, 4vw, 4rem);
  padding-bottom: clamp(2rem, 4vw, 4rem);
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 color-mix(in srgb, var(--border) 65%, transparent);
  z-index: 30;
}

.nav.container {
  padding-bottom: 10px;
}

.site-footer .container {
  padding-bottom: 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  gap: 1rem;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.95rem;
  position: relative;
  padding-bottom: 0.25rem;
  transition: color 0.2s ease;
}

.nav-links a.active::after,
.nav-links a:hover::after,
.nav-links a:focus::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-color);
  border-radius: 2px;
}

.nav-toggle {
  background: color-mix(in srgb, var(--card) 90%, transparent);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 1.1rem;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  color: var(--text);
  transition: border 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.nav-toggle:hover,
.nav-toggle:focus {
  border-color: var(--accent-color);
  background-color: color-mix(in srgb, var(--accent-color) 18%, transparent);
  color: var(--accent-color);
}

.nav-toggle {
  display: none;
}

.theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.theme-toggle .checkbox {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
}

.checkbox-label {
  --track-shadow: 0 10px 18px color-mix(in srgb, var(--accent-color) 24%, transparent);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-items: center;
  position: relative;
  width: 64px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid var(--toggle-track-border);
  background: var(--toggle-track);
  cursor: pointer;
  padding: 0 10px;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.checkbox:focus-visible + .checkbox-label {
  outline: 3px solid color-mix(in srgb, var(--accent-color) 45%, transparent);
  outline-offset: 4px;
}

.checkbox-label i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-style: normal;
  font-size: 0.9rem;
  transition: opacity 0.3s ease, color 0.3s ease;
}

.checkbox-label .fa-moon::before {
  content: '☾';
  color: var(--icon-moon);
}

.checkbox-label .fa-sun::before {
  content: '☀';
  color: var(--icon-sun);
}

.checkbox-label .fa-sun {
  opacity: 0.2;
}

.checkbox-label .ball {
  position: absolute;
  top: 50%;
  left: 4px;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: var(--toggle-thumb);
  box-shadow: var(--track-shadow);
  transform: translate(0, -50%);
  transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
}

.checkbox:checked + .checkbox-label {
  background: var(--toggle-track-active);
  border-color: var(--toggle-track-border-active);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent-color) 20%, transparent);
}

.checkbox:checked + .checkbox-label .fa-sun {
  opacity: 1;
}

.checkbox:checked + .checkbox-label .fa-sun::before {
  color: var(--icon-sun-active);
}

.checkbox:checked + .checkbox-label .fa-moon {
  opacity: 0.25;
}

.checkbox:checked + .checkbox-label .ball {
  transform: translate(30px, -50%);
  background: var(--toggle-thumb-active);
  box-shadow: 0 10px 22px color-mix(in srgb, var(--accent-color) 32%, transparent);
}

main {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.hero {
  padding: 6rem 0 4rem 0;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
  text-align: center;
}

.hero-text {
  max-width: min(60ch, 100%);
}

.hero-text h1 {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  margin: 0.5rem 0 1rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--muted);
}

.lede {
  font-size: 1.1rem;
  max-width: 48ch;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.5rem;
  border-radius: 999px;
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, background-color 0.2s ease, outline-color 0.2s ease;
  box-shadow: 0 0 0 rgba(0, 0, 0, 0);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  background: var(--btn-bg-hover);
  color: var(--btn-fg-hover);
  box-shadow: var(--btn-shadow);
}

.button:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--btn-border) 80%, transparent);
  outline-offset: 3px;
}

.button:active {
  transform: translateY(0);
  box-shadow: 0 6px 16px color-mix(in srgb, var(--accent-color) 22%, transparent);
}

.button.ghost {
  background: transparent;
  color: var(--btn-bg);
  border-color: color-mix(in srgb, var(--btn-border) 60%, transparent);
}

.button.ghost:hover,
.button.ghost:focus-visible {
  background: color-mix(in srgb, var(--btn-bg) 20%, transparent);
  color: var(--btn-bg);
  box-shadow: var(--btn-shadow);
}

.about {
  text-align: center;
}

.about h2,
.featured-writing h2,
.page-header h1,
.page-header h2 {
  margin-bottom: 1rem;
}

.about p,
.page-header p {
  max-width: 90ch;
  margin-left: auto;
  margin-right: auto;
}

.page-header {
  text-align: center;
}

.highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  padding-bottom: 4rem;
}

.highlight-card {
  padding: 1.5rem;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  min-height: 180px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform 0.2s ease, border 0.2s ease;
}

.highlight-card,
.project-card,
.blog-card,
.blog-post,
.contact-card {
  backdrop-filter: blur(12px);
}

.highlight-card:hover,
.highlight-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--accent-color);
}

.inline-link {
  color: var(--accent-color);
  font-weight: 600;
}

.inline-link:hover,
.inline-link:focus {
  text-decoration: underline;
}

.featured-writing {
  padding-bottom: 4rem;
}

.writing-card {
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
}

.writing-card:last-of-type {
  border-bottom: none;
}

.writing-card h3 {
  margin-bottom: 0.5rem;
}

.writing-card .meta {
  font-size: 0.85rem;
  color: var(--muted);
}

.projects-grid {
  display: grid;
  gap: 2.5rem;
  padding-bottom: 4rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  background: var(--card);
  transition: border 0.2s ease, transform 0.2s ease;
}

.project-card:hover,
.project-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--accent-color);
}

.project-meta h2 {
  margin: 0 0 0.75rem;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.blog-index {
  padding-bottom: 4rem;
}

.blog-cards {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.blog-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.5rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card);
  text-decoration: none;
  color: inherit;
  transition: border 0.2s ease, transform 0.2s ease;
}

.blog-card:hover,
.blog-card:focus {
  border-color: var(--accent-color);
  transform: translateY(-4px);
}

.blog-card .meta-line {
  font-size: 0.85rem;
  color: var(--muted);
}

.blog-card .description {
  color: var(--muted);
}

.blog-post {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  background: var(--card);
  min-height: 420px;
}

.blog-post h1,
.blog-post h2,
.blog-post h3 {
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.blog-post p {
  margin-bottom: 1.25rem;
}

.blog-post ul,
.blog-post ol {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}

.blog-post pre {
  background: rgba(0, 0, 0, 0.85);
  color: #f6f6f6;
  padding: 1rem;
  border-radius: 12px;
  overflow-x: auto;
}

.blog-post code {
  background: color-mix(in srgb, var(--accent-color) 25%, transparent);
  color: inherit;
  padding: 0.1rem 0.35rem;
  border-radius: 6px;
}

.blog-post blockquote {
  border-left: 3px solid var(--accent-color);
  margin: 1.5rem 0;
  padding-left: 1rem;
  color: var(--muted);
}

.meta-line {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  color: var(--accent-color);
}

.back-link:hover,
.back-link:focus {
  text-decoration: underline;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  padding-bottom: 4rem;
}

.contact-card {
  padding: 1.5rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border 0.2s ease, transform 0.2s ease;
}

.contact-card:hover,
.contact-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--accent-color);
}

.resume-card {
  gap: 1rem;
}

.resume-download {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1.1rem;
  border-radius: 14px;
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 600;
  text-decoration: none;
  margin-top: auto;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease, outline-color 0.2s ease;
  animation: none;
  box-shadow: 0 0 0 rgba(0, 0, 0, 0);
}

.resume-download:hover,
.resume-download:focus-visible {
  background: var(--btn-bg-hover);
  color: var(--btn-fg-hover);
  box-shadow: var(--btn-shadow);
  animation: resume-hover-bob 1.6s ease-in-out infinite;
}

.resume-download:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--btn-border) 80%, transparent);
  outline-offset: 3px;
}

.resume-download:active {
  animation: resume-click 0.45s ease forwards;
}

.resume-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.85rem;
  height: 1.85rem;
  color: var(--btn-fg);
}

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

.resume-icon-plane {
  fill: currentColor;
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 2.4;
}

.resume-icon-fold {
  fill: color-mix(in srgb, currentColor 55%, transparent);
}

.resume-icon-trail {
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
}

.resume-text {
  white-space: nowrap;
}


.about-page {
  padding-top: 4rem;
  padding-bottom: 6rem;
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

.bio {
  max-width: 90ch;
  margin: 0 auto;
  display: grid;
  gap: 1.25rem;
  text-align: center;
}

.bio p {
  margin: 0;
}

.experience {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.experience h1 {
  text-align: center;
  margin-bottom: 0.5rem;
}

.experience-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 1.75rem;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 1.3rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: color-mix(in srgb, var(--accent-color) 28%, var(--border));
}

.timeline-item {
  position: relative;
  padding-left: 3.6rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 0.95rem;
  top: 1.2rem;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  background: var(--accent-color);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent-color) 20%, transparent);
}

.timeline-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.5rem 1.75rem;
  display: grid;
  gap: 0.75rem;
  box-shadow: 0 18px 36px color-mix(in srgb, var(--accent-color) 14%, transparent);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.timeline-card:hover,
.timeline-card:focus-within {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent-color) 70%, transparent);
  box-shadow: 0 22px 42px color-mix(in srgb, var(--accent-color) 22%, transparent);
}

.timeline-card h3 {
  margin: 0;
}

.timeline-card p {
  margin: 0;
}

.timeline-period {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.timeline-item--upcoming .timeline-card {
  border-style: dashed;
  border-color: color-mix(in srgb, var(--accent-color) 60%, transparent);
  background: color-mix(in srgb, var(--card) 82%, var(--accent-color) 8%);
}

.timeline-item--upcoming::before {
  background: color-mix(in srgb, var(--accent-color) 70%, #ffffff 30%);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent-color) 26%, transparent);
}

.tech-stack {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.tech-stack h1 {
  text-align: center;
  margin-bottom: 0;
}

.tech-sections {
  display: grid;
  gap: 2rem;
}

.tech-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 1.75rem;
  display: grid;
  gap: 1.5rem;
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 34px color-mix(in srgb, var(--accent-color) 12%, transparent);
  text-align: center;
}

.tech-section h3 {
  margin: 0;
}


.tech-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(168px, 1fr));
}

.tech-item {
  --tech-icon-color: var(--accent-color);
  --tech-card-size: 176px;
  background: color-mix(in srgb, var(--card) 90%, transparent);
  border: 1px solid color-mix(in srgb, var(--tech-icon-color) 28%, var(--border));
  border-radius: 18px;
  padding: 1.25rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  height: var(--tech-card-size);
  width: 100%;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.tech-item:hover,
.tech-item:focus-within {
  transform: translateY(-2px);
  border-color: var(--tech-icon-color);
  box-shadow: 0 14px 30px color-mix(in srgb, var(--tech-icon-color) 24%, transparent);
}


.tech-icon {
  width: 2.75rem;
  height: 2.75rem;
  color: var(--tech-icon-color);
}

.tech-icon svg {
  width: 100%;
  height: 100%;
  display: block;
  fill: currentColor;
}

.tech-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg);
}

.tech-item--python { --tech-icon-color: #3776ab; }
.tech-item--c { --tech-icon-color: #03599c; }
.tech-item--cplusplus { --tech-icon-color: #004482; }
.tech-item--mysql { --tech-icon-color: #4479a1; }
.tech-item--r { --tech-icon-color: #276dc3; }
.tech-item--html { --tech-icon-color: #e34f26; }
.tech-item--css { --tech-icon-color: #1572b6; }
.tech-item--tensorflow { --tech-icon-color: #ff6f00; }
.tech-item--pytorch { --tech-icon-color: #ee4c2c; }
.tech-item--langchain { --tech-icon-color: #2b8a64; }
.tech-item--ollama { --tech-icon-color: #00e08f; }
.tech-item--github { --tech-icon-color: #181717; }
.tech-item--vscode { --tech-icon-color: #007acc; }
.tech-item--jupyter { --tech-icon-color: #f37626; }
.tech-item--docker { --tech-icon-color: #2496ed; }
.tech-item--kubernetes { --tech-icon-color: #326ce5; }
.tech-item--terraform { --tech-icon-color: #623ce4; }
.tech-item--tableau { --tech-icon-color: #e97627; }
.tech-item--wandb { --tech-icon-color: #ffbe00; }
.tech-item--llamacpp { --tech-icon-color: #f97316; }
.tech-item--n8n { --tech-icon-color: #f05a4b; }
.tech-item--pandas { --tech-icon-color: #150458; }
.tech-item--numpy { --tech-icon-color: #013243; }
.tech-item--matplotlib { --tech-icon-color: #11557c; }
.tech-item--opencv { --tech-icon-color: #5c3ee8; }
.tech-item--gradio { --tech-icon-color: #ff5c67; }
.tech-item--streamlit { --tech-icon-color: #ff4b4b; }
.tech-item--huggingface { --tech-icon-color: #ffb000; }
.tech-item--scikitlearn { --tech-icon-color: #f7931e; }
.tech-item--nltk { --tech-icon-color: #2c6e49; }
.tech-item--uv { --tech-icon-color: #7f52ff; }
.tech-item--ruff { --tech-icon-color: #5a5ac8; }

@media (min-width: 960px) {
  .tech-sections {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .bio {
    text-align: center;
  }

  .experience-timeline::before {
    left: 1rem;
  }

  .timeline-item {
    padding-left: 3rem;
  }

  .timeline-item::before {
    left: 0.6rem;
  }
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 600;
  color: var(--text);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.contact-link:hover,
.contact-link:focus {
  color: var(--accent-color);
  background: color-mix(in srgb, var(--accent-color) 20%, transparent);
  box-shadow: 0 8px 22px color-mix(in srgb, var(--accent-color) 18%, transparent);
  transform: translateX(4px);
}

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.25rem;
  height: 1.25rem;
  color: currentColor;
}

.social-icon svg {
  display: block;
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  color: var(--muted);
}

.site-credit {
  font-size: 0.75rem;
  margin-top: 0.5rem;
}

.site-credit a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--accent-color) 40%, transparent);
}

.site-credit a:hover,
.site-credit a:focus-visible {
  color: var(--accent-color);
}

.empty-state {
  text-align: center;
  color: var(--muted);
  margin-top: 6rem;
}

.error {
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid rgba(220, 53, 69, 0.3);
  background: rgba(220, 53, 69, 0.08);
  color: #c33434;
}

@media (prefers-reduced-motion: reduce) {
  .resume-download,
  .resume-download:hover,
  .resume-download:focus-visible,
  .resume-download:active {
    animation: none !important;
    transform: translateY(0) !important;
  }
}

@media (max-width: 900px) {
  .blog-layout {
    grid-template-columns: 1fr;
  }

  .blog-sidebar {
    position: static;
  }
}

@media (max-width: 720px) {
  .nav {
    position: relative;
  }

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

  .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: color-mix(in srgb, var(--bg) 96%, transparent);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
    gap: 0.75rem;
    min-width: 180px;
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .nav-links.open {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
  }

  .container {
    width: 100%;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    padding-bottom: 3rem;
  }

  .nav.container {
    padding-bottom: 10px;
  }

  .site-footer .container {
    padding-bottom: 0;
  }

  .hero {
    padding-top: 4rem;
  }
}

@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .blog-post {
    padding: 1.5rem;
  }
}