:root {
  color-scheme: light;
  --bg: #fafafa;
  --surface: #ffffff;
  --text: #0f0f0f;
  --text-secondary: #555555;
  --text-emphasis: #3b3b3b;
  --text-tertiary: #999999;
  --border: #e4e4e4;
  --accent: #0060df;
  --accent-subtle: rgba(0, 96, 223, 0.08);
  --dot-active: #0060df;
  --dot-inactive: var(--border);
  --line: var(--border);
  --code-bg: #f0f1f3;
  --hover-bg: rgba(0, 0, 0, 0.04);
  --glow: rgba(0, 96, 223, 0.08);
  --radius: 8px;
  --font-sans: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --cursor: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='18' height='23' viewBox='0 0 20 26'><path d='M3,2 L3,20 L7,16.5 L10.5,24 L13.5,22.5 L10,15.5 L17,15.5 Z' fill='%23111111'/></svg>") 3 2, auto;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #101010;
  --surface: #1a1a1a;
  --text: #ececec;
  --text-secondary: #a0a0a0;
  --text-emphasis: #c8c8c8;
  --text-tertiary: #666666;
  --border: #2a2a2a;
  --accent: #5e9eff;
  --accent-subtle: rgba(94, 158, 255, 0.1);
  --dot-active: #5e9eff;
  --dot-inactive: #333333;
  --line: var(--border);
  --code-bg: #1e1e1e;
  --hover-bg: rgba(255, 255, 255, 0.05);
  --glow: rgba(94, 158, 255, 0.1);
  --cursor: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='18' height='23' viewBox='0 0 20 26'><path d='M3,2 L3,20 L7,16.5 L10.5,24 L13.5,22.5 L10,15.5 L17,15.5 Z' fill='%23ececec'/></svg>") 3 2, auto;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.construction-screen {
  display: none;
}

body.site-under-construction {
  min-height: 100vh;
  margin: 0;
}

body.site-under-construction .construction-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem 1.5rem;
  text-align: center;
  box-sizing: border-box;
}

body.site-under-construction .skip-link,
body.site-under-construction .header,
body.site-under-construction #main,
body.site-under-construction .footer {
  display: none !important;
}

.construction-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 20ch;
  line-height: 1.2;
}

.construction-note {
  margin-top: 1rem;
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 28ch;
}

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

a,
button {
  -webkit-tap-highlight-color: transparent;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
  z-index: 100;
}

.skip-link:focus {
  top: 1rem;
}

/* ------------------------------------------------
   Header
   ------------------------------------------------ */

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  max-width: 900px;
  margin: 0 auto;
  padding: 1.75rem 2rem 0;
  background: var(--bg);
  backdrop-filter: blur(0) saturate(1);
  -webkit-backdrop-filter: blur(0) saturate(1);
  transition: padding 300ms ease, backdrop-filter 300ms ease,
    -webkit-backdrop-filter 300ms ease;
}

.header.scrolled {
  padding-top: 0.9rem;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(14px) saturate(1.6);
  -webkit-backdrop-filter: blur(14px) saturate(1.6);
}

.header::after {
  content: "";
  display: block;
  height: 2px;
  margin-top: 0.1rem;
  background: var(--border);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.65rem;
}

.wordmark {
  font-weight: 700;
  font-size: 1.95rem;
  letter-spacing: -0.025em;
  color: var(--text);
  transition: font-size 300ms ease;
}

.header.scrolled .wordmark {
  font-size: 1.55rem;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  color: var(--text-tertiary);
  transition: color 100ms ease, background 100ms ease;
}

.theme-toggle:hover {
  color: var(--text);
  background: var(--hover-bg);
}

.icon-sun {
  display: none;
}
.icon-moon {
  display: block;
}
[data-theme="dark"] .icon-moon {
  display: none;
}
[data-theme="dark"] .icon-sun {
  display: block;
}

.nav {
  display: flex;
  gap: 1.75rem;
  padding-bottom: 0.75rem;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.nav a {
  position: relative;
  padding-bottom: 4px;
  transition: color 200ms ease;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 250ms ease;
}

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

.nav a:hover::after {
  transform: scaleX(1);
}

.nav a.active {
  color: var(--text);
}

.nav a.active::after {
  transform: scaleX(1);
}

/* ------------------------------------------------
   Sections
   ------------------------------------------------ */

.section {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem 0;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.1rem;
}

.section-number {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent);
  position: relative;
  top: -0.5px;
}

.section-label {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-emphasis);
  white-space: nowrap;
}

.section-header::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
  margin-left: 0.5rem;
}

/* ------------------------------------------------
   About
   ------------------------------------------------ */

.about-card {
  padding: 0;
}

.about-text {
  font-size: 1.12rem;
  line-height: 1.75;
  color: var(--text-emphasis);
}

.about-text + .about-text {
  margin-top: 1rem;
}

.location-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.location-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.45);
  animation: location-pulse 2.4s ease-in-out infinite;
}

@keyframes location-pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.45);
  }
  50% {
    box-shadow: 0 0 0 5px rgba(52, 211, 153, 0);
  }
}

.location-text {
  letter-spacing: 0.02em;
}

.about-meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.skills-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  min-width: 0;
}

.skills-row span {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  padding: 0.28rem 0.7rem;
  border-radius: 0.4rem;
  background: var(--code-bg);
  color: var(--text-emphasis);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
  cursor: default;
}

.skills-row span::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  background: radial-gradient(
    120px circle at var(--glow-x, 50%) var(--glow-y, 50%),
    var(--glow),
    transparent 70%
  );
  transition: opacity 200ms ease;
  pointer-events: none;
}

.skills-row span:hover,
.skills-row span.glow-pointer-active {
  transform: translateY(-2px);
  border-color: var(--text-tertiary);
  box-shadow: 0 4px 16px var(--glow);
}

.skills-row span:hover::before,
.skills-row span.glow-pointer-active::before {
  opacity: 1;
}

.social-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.social-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem;
  color: var(--text-secondary);
  transition: color 120ms ease, transform 120ms ease;
  cursor: pointer;
}

.social-item svg {
  display: block;
  width: 22px;
  height: 22px;
  pointer-events: none;
}

.social-item:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.social-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ------------------------------------------------
   Experience
   ------------------------------------------------ */

.experience-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.exp-card {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  background: var(--surface);
  transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.exp-card:hover,
.exp-card.glow-pointer-active {
  border-color: var(--text-tertiary);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--glow);
}

.exp-card-glow {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  background: radial-gradient(
    500px circle at var(--glow-x, 50%) var(--glow-y, 50%),
    var(--glow),
    transparent 60%
  );
  transition: opacity 200ms ease;
  pointer-events: none;
}

.exp-card:hover .exp-card-glow,
.exp-card.glow-pointer-active .exp-card-glow {
  opacity: 1;
}

.exp-company {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.85rem;
}

.exp-company a:hover {
  text-decoration: underline;
}

.exp-page-preview {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.75rem;
  padding: 0.1rem;
  padding-right: 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  text-decoration: none;
  color: inherit;
  transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.exp-card > .exp-page-preview {
  margin-left: 0;
}

.exp-page-preview:hover {
  border-color: var(--text-tertiary);
  box-shadow: 0 4px 16px var(--glow);
  transform: translateY(-1px);
}

.exp-page-preview:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.exp-page-preview-img {
  display: block;
  width: 76px;
  height: 48px;
  object-fit: cover;
  object-position: left center;
  border-radius: calc(var(--radius) - 2px);
  flex-shrink: 0;
}

.exp-page-preview-label {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-emphasis);
}

.exp-page-preview--text {
  padding: 0.3rem 0.7rem;
}

.exp-page-preview-icon {
  display: block;
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  color: var(--text-secondary);
  transition: color 150ms ease;
}

.exp-page-preview--text:hover .exp-page-preview-icon {
  color: var(--text);
}

.exp-page-preview--text .exp-page-preview-label {
  font-size: 0.85rem;
}

[data-theme="dark"] .exp-page-preview {
  border-color: #3a3a3a;
}

[data-theme="dark"] .exp-page-preview:hover {
  border-color: var(--text-tertiary);
}

.exp-roles {
  list-style: none;
  padding: 0 0 0 1.15rem;
  margin: 0;
  position: relative;
}

.exp-roles::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line);
}

.exp-roles:has(.exp-role:only-child)::before {
  display: none;
}

.exp-role {
  position: relative;
  padding-bottom: 0.85rem;
}

.exp-role:last-child {
  padding-bottom: 0;
}

.exp-role::before {
  content: "";
  position: absolute;
  left: -1.15rem;
  top: 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1.5px solid var(--dot-inactive);
  background: var(--surface);
  z-index: 1;
  transition: border-color 180ms ease, background 180ms ease;
}

.exp-role--active::before {
  border-color: var(--dot-active);
  background: var(--dot-active);
}

.exp-role-content {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.2rem 1rem;
}

.exp-title {
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--text-emphasis);
}

.exp-dates {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-tertiary);
  flex-shrink: 0;
}

/* ------------------------------------------------
   Projects
   ------------------------------------------------ */

.tab-bar {
  display: inline-flex;
  background: var(--code-bg);
  border-radius: var(--radius);
  padding: 3px;
  gap: 2px;
  margin-bottom: 1.5rem;
}

.tab {
  position: relative;
  padding: 0.4rem 1.1rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: calc(var(--radius) - 2px);
  background: transparent;
  transition: color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

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

.tab.active {
  color: var(--text);
  background: var(--surface);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 0 0 1px var(--border);
}

[data-theme="dark"] .tab.active {
  background: #2a2a2a;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.project-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-style: italic;
  margin-bottom: 2rem;
  padding-left: 0.85rem;
  border-left: 2px solid var(--border);
}

.timeline {
  list-style: none;
  padding: 0 0 0 1.5rem;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  bottom: 4px;
  width: 1px;
  background: var(--line);
}

.timeline-item {
  position: relative;
  padding-bottom: 1.75rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.5rem;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 2px solid var(--dot-inactive);
  background: var(--bg);
  z-index: 1;
}

.timeline-item.has-project::before {
  border-color: var(--dot-active);
  background: var(--dot-active);
}

/* ------------------------------------------------
   Card
   ------------------------------------------------ */

.card {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  background: var(--surface);
  transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.card:not(.card-empty) .exp-card-glow {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  background: radial-gradient(
    500px circle at var(--glow-x, 50%) var(--glow-y, 50%),
    var(--glow),
    transparent 60%
  );
  transition: opacity 200ms ease;
  pointer-events: none;
}

.card:not(.card-empty):hover .exp-card-glow,
.card:not(.card-empty).glow-pointer-active .exp-card-glow {
  opacity: 1;
}

.card:hover,
.card.glow-pointer-active:not(.card-empty) {
  border-color: var(--text-tertiary);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--glow);
}

.card-empty {
  border-style: dashed;
  background: transparent;
}

.card-empty:hover {
  border-color: var(--border);
  transform: none;
  box-shadow: none;
}

.card-step {
  display: block;
  margin-bottom: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.card h3 {
  font-size: 1.06rem;
  font-weight: 600;
}

.card-project {
  display: inline-block;
  margin-top: 0.4rem;
  padding: 0.12rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  background: var(--accent-subtle);
  border-radius: 4px;
}

.card-subprojects {
  display: flex;
  flex-direction: column;
}

.card-subproject {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-top: 0.6rem;
}

.card-subprojects > .card-subproject:first-child {
  padding-top: 0;
}

.card-subproject + .card-subproject {
  margin-top: 0.6rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border);
}

.card-subproject + .card-subproject .card-project {
  margin-top: 0;
}

.card-desc {
  margin-top: 0.45rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.card-icon-links {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.6rem;
}

.card-icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.15rem;
  color: var(--text-emphasis);
  transition: color 150ms ease, transform 150ms ease;
}

.card-icon-link:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.card-icon-link svg {
  display: block;
  width: 18px;
  height: 18px;
  pointer-events: none;
}

/* ------------------------------------------------
   Themed tooltips
   ------------------------------------------------ */

[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 0.3rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  line-height: 1.3;
  white-space: nowrap;
  color: var(--text-emphasis);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 5px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms ease, transform 150ms ease;
  z-index: 20;
}

[data-theme="dark"] [data-tooltip]::after {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (hover: none) {
  [data-tooltip]::after {
    display: none;
  }
}

/* ------------------------------------------------
   Footer
   ------------------------------------------------ */

.footer {
  max-width: 900px;
  margin: 3rem auto 0;
  padding: 0 2rem 2.5rem;
}

.footer-inner {
  border-top: 2px solid var(--border);
  padding-top: 1.9rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  column-gap: 2rem;
  row-gap: 0.5rem;
  align-items: baseline;
}

.footer-name {
  grid-column: 1;
  grid-row: 1;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0;
  min-width: 0;
}

.footer-nav {
  grid-column: 2;
  grid-row: 1;
  justify-self: end;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1.25rem 1.75rem;
  margin: 0;
  font-size: 0.96rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.footer-tagline {
  grid-column: 1;
  grid-row: 2;
  font-size: 0.875rem;
  line-height: 1.4;
  color: var(--text-secondary);
  margin: 0;
}

.footer-copy {
  grid-column: 2;
  grid-row: 2;
  justify-self: end;
  margin: 0;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-tertiary);
  line-height: 1.4;
}

.footer-social {
  grid-column: 1;
  grid-row: 3;
  margin: 0;
  margin-top: 0.6rem;
}

.footer-social .social-item {
  padding: 0;
}

.footer-nav a {
  transition: color 120ms ease;
}

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

/* ------------------------------------------------
   Responsive
   ------------------------------------------------ */

@media (max-width: 700px) {
  .footer-nav,
  .footer-copy {
    display: none;
  }

  .exp-role-content {
    flex-direction: column;
    gap: 0.15rem;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 1.25rem 1rem 0;
  }

  .header.scrolled {
    padding-top: 0.75rem;
  }

  .wordmark {
    font-size: 1.4rem;
  }

  .header.scrolled .wordmark {
    font-size: 1.2rem;
  }

  .nav {
    gap: 1rem;
    font-size: 0.95rem;
  }

  .section {
    padding: 2.25rem 1rem 0;
  }

  .about-meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .exp-card {
    padding: 1rem;
  }

  .footer {
    margin-top: 2.25rem;
    padding: 0 1rem 2rem;
  }

  .footer-inner {
    padding-top: 1.55rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }

  .footer-name {
    order: 1;
    margin: 0;
  }

  .footer-tagline {
    order: 2;
    margin: 0;
  }

  .footer-social {
    order: 3;
    margin: 0.45rem 0 0;
  }
}

html,
a,
button,
[role="tab"],
.social-item,
.card-icon-link,
.theme-toggle,
.skills-row span {
  cursor: var(--cursor);
}

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