:root {
  --bg: #FFFFFF;
  --ink: #1F1E1C;
  --text-dim: var(--ink);
  --muted: #77746C;
  --line: #E4E1D8;

  --font-body: 'Inter', -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;

  --content-width: 640px;
  --space-1: 6px;
  --space-2: 14px;
  --space-3: 22px;
  --space-4: 36px;
  --space-5: 56px;
}

:root[data-theme="dark"] {
  --bg: #0E0E0E;
  --ink: #F2F1EC;
  --text-dim: #CBC8BE;
  --muted: #8C897F;
  --line: #262620;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0E0E0E;
    --ink: #F2F1EC;
    --text-dim: #CBC8BE;
    --muted: #8C897F;
    --line: #262620;
  }
}

* { box-sizing: border-box; }

/* ---- Loader ---- */
.loader {
  display: none;
}

body.loading {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  overflow: hidden;
  touch-action: none;
}

body.loading .loader {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 50;
  background: var(--bg);
  transform: translateY(0);
  transition: transform 1s cubic-bezier(0.76, 0, 0.24, 1);
}

body.loading .loader.done {
  transform: translateY(100%);
}

.loader-id {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.loader-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
}

.loader-name {
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.loader-count {
  position: absolute;
  left: 50%;
  bottom: 14.7%;
  transform: translateX(-50%);
  font-size: 13px;
  color: var(--muted);
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.page {
  opacity: 1;
}

body.loading .page {
  opacity: 0;
  transform: translateY(-14px);
  transition: opacity 0.7s ease 0.15s, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.15s;
}

body.loading.revealed .page {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  body.loading .loader,
  body.loading .page {
    transition-duration: 0.01ms !important;
  }
}

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--line);
  transition: text-decoration-color 0.15s ease;
}

a:hover {
  text-decoration-color: var(--ink);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

strong {
  font-weight: 600;
  color: var(--ink);
}

/* ---- Nav ---- */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-3) var(--space-3) 0;
  font-size: 13px;
  color: var(--muted);
}

.nav-top {
  display: contents;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  order: 1;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
}

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

.nav-hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  background: none;
  color: var(--ink);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-social {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
  order: 2;
}

.nav-social a {
  display: flex;
  color: var(--muted);
}

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

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  background: none;
  border: none;
  padding: 0;
  margin-left: 2px;
  cursor: pointer;
}

.theme-toggle:hover {
  color: var(--ink);
}

@media (max-width: 480px) {
  .site-nav {
    padding: var(--space-2) var(--space-2) 0;
  }
  .nav-hamburger {
    display: flex;
  }
  .nav-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }
  .nav-links {
    display: none;
  }
  .nav-social {
    gap: 10px;
  }

  .site-nav:has(.nav-links.open) {
    position: fixed;
    inset: 0;
    z-index: 30;
    max-width: none;
    margin: 0;
    padding: var(--space-3);
    background: var(--bg);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    overflow-y: auto;
  }

  .site-nav:has(.nav-links.open) .nav-top {
    margin-bottom: var(--space-5);
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-5);
  }

  .nav-links.open a {
    font-size: 28px;
    font-weight: 600;
    color: var(--ink);
  }
}

/* ---- Shared section rhythm ---- */
main {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-5) var(--space-3) var(--space-5);
}

section + section {
  margin-top: var(--space-5);
}

.section-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  margin: 0 0 var(--space-3);
}

/* ---- Hero ---- */
.avatar-btn {
  display: block;
  padding: 0;
  border: none;
  background: none;
  margin-bottom: var(--space-3);
  cursor: default;
}

.avatar-ring {
  display: block;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  padding: 0;
}

.avatar-btn.has-story {
  cursor: pointer;
}

.avatar-btn.has-story .avatar-ring {
  padding: 2.5px;
  background: linear-gradient(45deg, #f9ce34, #ee2a7b, #6228d7);
}

.avatar-ring-inner {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  padding: 0;
}

.avatar-btn.has-story .avatar-ring-inner {
  padding: 2px;
  background: var(--bg);
}

.avatar {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

/* ---- Story viewer ---- */
.story-viewer {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.story-viewer[hidden] {
  display: none;
}

.story-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.story-progress {
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  gap: 6px;
  z-index: 2;
}

.story-progress .bar {
  flex: 1;
  height: 2px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.3);
  overflow: hidden;
}

.story-progress .bar-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: #fff;
}

.story-progress .bar.done .bar-fill {
  width: 100%;
}

.story-progress .bar.active .bar-fill {
  animation: storyFill 4s linear forwards;
}

.story-progress .bar.paused .bar-fill {
  animation-play-state: paused;
}

@keyframes storyFill {
  from { width: 0%; }
  to { width: 100%; }
}

.story-close {
  position: absolute;
  top: 14px;
  right: 16px;
  z-index: 2;
  width: 32px;
  height: 32px;
  border: none;
  background: none;
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  opacity: 0.85;
}

.story-close:hover {
  opacity: 1;
}

.story-nav {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 35%;
  cursor: pointer;
}

.story-nav-prev {
  left: 0;
}

.story-nav-next {
  right: 0;
}

@media (prefers-reduced-motion: reduce) {
  .story-progress .bar.active .bar-fill {
    animation-duration: 0.01ms;
  }
}

.hero-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.hero h1 {
  font-weight: 600;
  font-size: 26px;
  letter-spacing: -0.01em;
  margin: 0 0 2px;
}

.hero-role {
  font-size: 15px;
  color: var(--muted);
  margin: 0;
}

.hero-meta {
  text-align: right;
  font-size: 13px;
  color: var(--muted);
  flex-shrink: 0;
  padding-top: 4px;
}

.hero-location,
.hero-time {
  margin: 0;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 480px) {
  .hero-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .hero-meta {
    text-align: left;
    padding-top: 0;
  }
}

.hero-bio {
  color: var(--text-dim);
  margin: 0 0 var(--space-3);
  max-width: 58ch;
}

.hero-bio:last-of-type {
  margin-bottom: 0;
}

/* ---- Work ---- */
.work-item {
  margin-bottom: var(--space-4);
}

.work-item:last-child {
  margin-bottom: 0;
}

.work-title {
  display: inline-block;
  font-weight: 500;
  font-size: 15px;
  margin-bottom: 4px;
}

.work-desc {
  color: var(--muted);
  margin: 0;
  max-width: 56ch;
}

.work-image-wrap {
  margin-top: var(--space-2);
  aspect-ratio: 624 / 420;
  border-radius: 16px;
  overflow: hidden;
  background: var(--line);
}

.work-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.work-image-wrap.img-missing .work-image {
  display: none;
}

.brand-cover {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #7762FF;
}

.brand-cover img {
  width: 30%;
  height: auto;
  object-fit: contain;
}

.case-cover-wrap {
  width: 100%;
  aspect-ratio: 624 / 420;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: var(--space-5);
}

/* ---- Experience ---- */
.exp-item {
  margin-bottom: var(--space-4);
}

.exp-item:last-child {
  margin-bottom: 0;
}

.exp-title {
  font-weight: 400;
  color: var(--text-dim);
  margin: 0;
}

.exp-dates {
  font-size: 13px;
  color: var(--muted);
  margin: 2px 0 6px;
}

/* ---- Skills ---- */
.skill-line {
  color: var(--muted);
  margin: 0;
  max-width: 58ch;
}

/* ---- About page ---- */
.about-intro p {
  font-size: 18px;
  color: var(--text-dim);
  margin: 0 0 var(--space-3);
  max-width: 58ch;
}

.about-intro p:last-child {
  margin-bottom: 0;
}

.about-strip {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-top: var(--space-5);
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.about-strip::-webkit-scrollbar {
  display: none;
}

.about-strip img {
  flex: 0 0 auto;
  width: 220px;
  height: 280px;
  object-fit: cover;
  background: var(--line);
}

.about-body {
  margin-top: var(--space-5);
}

.about-body p {
  color: var(--text-dim);
  margin: 0 0 var(--space-3);
  max-width: 62ch;
}

.about-body p:last-child {
  margin-bottom: 0;
}

@media (max-width: 480px) {
  .about-strip img {
    width: 160px;
    height: 210px;
  }
}

/* ---- Case study ---- */
.toc {
  display: none;
  position: fixed;
  top: 120px;
  left: calc(50% - 528px);
  width: 160px;
}

.toc-heading {
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 var(--space-2);
}

.toc a {
  display: block;
  font-size: 13px;
  color: var(--muted);
  padding: 4px 0;
  line-height: 1.4;
}

.toc a:hover {
  color: var(--ink);
}

.toc a.active {
  color: var(--ink);
  font-weight: 500;
}

@media (min-width: 1180px) {
  .toc {
    display: block;
  }
}

.back-link {
  display: inline-block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: var(--space-4);
}

.back-link:hover {
  color: var(--ink);
}

.case-eyebrow {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 var(--space-1);
}

.case-hero h1 {
  font-weight: 600;
  font-size: 28px;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  text-wrap: balance;
}

.case-tagline {
  color: var(--muted);
  font-size: 16px;
  max-width: 58ch;
  margin: 0 0 var(--space-4);
}

.case-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3) var(--space-2);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--space-5);
}

.case-meta dt {
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 3px;
}

.case-meta dd {
  margin: 0;
  font-size: 14px;
}

.case-cover {
  width: 100%;
  border-radius: 16px;
  object-fit: cover;
  margin-bottom: var(--space-5);
  background: var(--line);
}

.case-section {
  margin-bottom: var(--space-5);
}

.case-section p {
  color: var(--text-dim);
  margin: 0 0 var(--space-3);
  max-width: 62ch;
}

.case-section p:last-child {
  margin-bottom: 0;
}

.case-section ul {
  margin: 0 0 var(--space-3);
  padding-left: 20px;
  max-width: 60ch;
  color: var(--text-dim);
}

.case-section li {
  margin-bottom: 6px;
}

.case-section li::marker {
  color: var(--muted);
}

.case-image {
  width: 100%;
  border-radius: 16px;
  object-fit: cover;
  margin: var(--space-3) 0;
  background: var(--line);
}

.case-source {
  font-size: 14px;
  color: var(--muted);
  padding-top: var(--space-4);
  border-top: 1px solid var(--line);
}

@media (max-width: 480px) {
  .case-meta {
    grid-template-columns: 1fr;
  }
}

/* ---- Footer ---- */
.site-footer {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-3) var(--space-5);
  font-size: 13px;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}