@font-face {
  font-family: "Google Sans";
  src: url("/fonts/GoogleSans-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --text-primary: #101d2f;
  --border: #e9f0f6;
  --text-secondary: #6c7c93;
  --surface-muted: #edeff2;
  --bg: #ffffff;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text-secondary);
  font-family: "Google Sans", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Meiryo", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

p {
  margin: 0;
}

.page {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
}

/* Left column */
.left {
  flex: 1 1 0;
  min-width: 0;
}

.left__content {
  padding: 80px 80px 0;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.logo {
  display: block;
  width: 94px;
  height: 20px;
}

.logo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.menu {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
}

/* Dotted underline links */
.link {
  color: inherit;
  text-decoration: underline dotted;
  text-decoration-skip-ink: none;
  text-underline-position: from-font;
  transition: color 0.15s ease;
}

.link:hover,
.link.is-active {
  color: var(--text-primary);
}

/* Main column */
.main {
  flex: 0 1 560px;
  min-width: 0;
  max-width: 560px;
  padding: 80px 0;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.intro {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.strong {
  color: var(--text-primary);
}

.showcase {
  margin: 0;
  width: 100%;
  height: 350px;
  background: var(--surface-muted);
  overflow: hidden;
}

.showcase video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Index: "Something i built recently" — each video with a caption under it */
.built {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 8px; /* 40px main gap + 8px = 48px */
}

.built__list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.built__item {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.built__caption {
  font-size: 14px;
  line-height: 1.5;
  text-align: center;
}

.page-title {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
}

/* About */
.experiences {
  --company-col: 180px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.experiences__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.experience {
  position: relative;
  display: grid;
  grid-template-columns: var(--company-col) 1fr auto;
  align-items: start;
}

.experience + .experience {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* Second role at the same company: divider starts at the role column */
.experience + .experience--continued {
  border-top-color: transparent;
}

.experience + .experience--continued::before {
  content: "";
  position: absolute;
  top: -1px;
  left: var(--company-col);
  right: 0;
  height: 1px;
  background: var(--border);
}

.experience__company {
  justify-self: start;
}

.experience__role {
  color: var(--text-primary);
}

.experience__year {
  text-align: right;
  white-space: nowrap;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 16px;
  border-radius: 40px;
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}

.button--primary {
  background: var(--text-primary);
  color: #ffffff;
}

.button--primary:hover {
  opacity: 0.88;
}

.button--secondary {
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.button--secondary:hover {
  background: #f5f8fb;
}

/* Works */
.work__image {
  display: block;
  width: 100%;
  height: auto;
  background: var(--surface-muted);
}

/* Moments */
.moments {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.moments__col {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.moments__image {
  display: block;
  width: 100%;
  height: auto;
  background: var(--surface-muted);
}

/* Projects */
.project {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.project__title {
  align-self: flex-start;
}

.project__image {
  display: block;
  width: 100%;
  height: auto;
}

/* Keeps the video's own 4:3 shape at any width (no letterboxing or cropping) */
.project__video {
  aspect-ratio: 1920 / 1440;
  object-fit: cover;
  background: var(--surface-muted);
}

.right {
  flex: 1 1 0;
  min-width: 0;
}

/* Language switch: EN / 日 */
.lang-switch {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.5;
  white-space: nowrap;
}

.lang-switch__option {
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  color: var(--text-secondary);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.lang-switch__option.is-active {
  color: var(--text-primary);
}

/* Desktop shows the switch top-right; the in-menu copy is for mobile */
.lang-switch--menu {
  display: none;
}

/* Desktop: sidebar is fixed so it stays put while the page rubber-bands */
@media (min-width: 1001px) {
  .left__content {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1;
  }

  .lang-switch--desktop {
    position: fixed;
    top: 80px;
    right: 80px;
    z-index: 1;
  }
}

/* Mobile header parts (hidden on desktop) */
.menu-toggle,
.left__divider {
  display: none;
}

/* Mobile & tablet (Figma: 375px frames) */
@media (max-width: 1000px) {
  .page {
    flex-direction: column;
    align-items: stretch;
  }

  .right {
    display: none;
  }

  /* Header sticks to the top; it slides up while scrolling down and back on scroll up */
  .left {
    position: sticky;
    top: 0;
    z-index: 50;
    transition: transform 480ms cubic-bezier(0.32, 0.72, 0, 1);
    will-change: transform;
  }

  .left.is-hidden {
    transform: translateY(-100%);
  }

  /* Header: logo + menu toggle, collapsible menu, divider */
  .left__content {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 0;
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    padding: 24px 20px 0;
    background: var(--bg);
  }

  .logo {
    width: 113px;
    height: 24px;
  }

  .menu-toggle {
    display: block;
    position: relative;
    width: 24px;
    height: 24px;
    margin: 0;
    padding: 0;
    border: 0;
    background: none;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .menu-toggle__line {
    position: absolute;
    left: 4px;
    width: 16px;
    height: 1.5px;
    background: #000000;
    transition: transform 420ms cubic-bezier(0.32, 0.72, 0, 1);
  }

  .menu-toggle__line:first-child {
    top: 8px;
  }

  .menu-toggle__line:last-child {
    top: 16px;
  }

  /* Open: both lines meet in the middle (Figma "Active") */
  .left__content.is-open .menu-toggle__line:first-child {
    transform: translateY(3.25px);
  }

  .left__content.is-open .menu-toggle__line:last-child {
    transform: translateY(-4.75px);
  }

  .menu-panel {
    grid-column: 1 / -1;
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 520ms cubic-bezier(0.32, 0.72, 0, 1);
  }

  .left__content.is-open .menu-panel {
    grid-template-rows: 1fr;
  }

  .menu {
    min-height: 0;
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    grid-template-rows: repeat(3, auto);
    grid-auto-flow: column;
    justify-items: start;
    column-gap: 12px;
    row-gap: 8px;
    padding-top: 0;
    transition: padding-top 520ms cubic-bezier(0.32, 0.72, 0, 1);
  }

  .left__content.is-open .menu {
    padding-top: 20px;
  }

  .menu .link {
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 200ms ease, transform 200ms ease, color 0.15s ease;
  }

  .left__content.is-open .menu .link {
    opacity: 1;
    transform: none;
    transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1), color 0.15s ease;
  }

  .left__content.is-open .menu .link:nth-child(1) { transition-delay: 80ms, 80ms, 0s; }
  .left__content.is-open .menu .link:nth-child(2) { transition-delay: 120ms, 120ms, 0s; }
  .left__content.is-open .menu .link:nth-child(3) { transition-delay: 160ms, 160ms, 0s; }
  .left__content.is-open .menu .link:nth-child(4) { transition-delay: 200ms, 200ms, 0s; }
  .left__content.is-open .menu .link:nth-child(5) { transition-delay: 240ms, 240ms, 0s; }

  .menu .lang-switch--menu {
    display: flex;
    gap: 12px;
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
  }

  .left__content.is-open .menu .lang-switch--menu .link {
    transition-delay: 280ms, 280ms, 0s;
  }

  .left__divider {
    display: block;
    grid-column: 1 / -1;
    height: 1px;
    margin-top: 24px;
    background: var(--border);
  }

  /* Main */
  .main {
    flex: 1 0 auto;
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    padding: 23px 20px 24px; /* 23px + 1px header divider = 24px, as in Figma */
    gap: 24px;
    font-size: 14px;
  }

  .group {
    gap: 6px;
  }

  /* Index */
  .main--index .intro {
    gap: 16px;
  }

  .built {
    gap: 12px;
    margin-top: 16px; /* 24px main gap + 16px = 40px */
  }

  .built__list {
    gap: 20px;
  }

  .built__item {
    gap: 12px;
  }

  .built__caption {
    font-size: 12px;
  }

  .showcase {
    height: auto;
    aspect-ratio: 560 / 350;
  }

  /* Projects */
  .project {
    gap: 12px;
  }

  /* Moments: one column, left column first then right */
  .moments,
  .moments__col {
    flex-direction: column;
    align-items: stretch;
    gap: 24px;
  }

  /* About */
  .main--about .intro {
    gap: 16px;
  }

  .main--about .experiences {
    --company-col: 120px;
    gap: 10px;
  }

  .main--about .experience + .experience {
    margin-top: 10px;
    padding-top: 10px;
  }

  .main--about .actions {
    padding: 12px 0;
  }
}

@media (max-width: 1000px) {
  .page {
    min-height: 100vh;
    min-height: 100dvh;
  }
}

/* Page transitions: fade only the main column, keep the sidebar still */
@view-transition {
  navigation: auto;
}

.main {
  view-transition-name: main;
}

.left__content {
  view-transition-name: sidebar;
}

.lang-switch--desktop {
  view-transition-name: lang;
}

::view-transition-group(root),
::view-transition-group(lang),
::view-transition-old(lang),
::view-transition-new(lang),
::view-transition-group(sidebar),
::view-transition-old(sidebar),
::view-transition-new(sidebar) {
  animation: none;
}

::view-transition-old(root) {
  display: none;
}

::view-transition-group(main) {
  animation: none;
}

::view-transition-old(main) {
  animation: fade-out 140ms cubic-bezier(0.4, 0, 1, 1) both;
}

/* The new page's main blocks animate themselves (intro.js), so no container fade */
::view-transition-new(main) {
  animation: none;
}

@keyframes fade-out {
  to {
    opacity: 0;
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
}


@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(main),
  ::view-transition-new(main) {
    animation: none;
  }

  .main {
    animation: none;
  }
}

/* Zoom (click media to view larger) */
.showcase,
.work__image,
.moments__image {
  cursor: pointer;
}

.showcase:focus-visible,
.work__image:focus-visible,
.moments__image:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 4px;
}

.zoom-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--bg);
  cursor: zoom-out;
}

.zoom-media {
  position: fixed;
  z-index: 101;
  margin: 0;
  max-width: none;
  aspect-ratio: auto;
  object-fit: cover;
  transform-origin: 0 0;
  will-change: transform;
  cursor: default;
}

/* Intro: centered logo placeholder until intro.js takes over */
html.is-intro:not(.is-intro-ready) .main,
html.is-intro:not(.is-intro-ready) .menu,
html.is-intro:not(.is-intro-ready) .lang-switch--desktop,
html.is-intro:not(.is-intro-ready) .menu-toggle,
html.is-intro:not(.is-intro-ready) .left__divider,
html.is-enter:not(.is-enter-ready) .main {
  opacity: 0;
}

html.is-intro .logo {
  visibility: hidden;
}

html.is-intro.is-intro-ready .logo {
  visibility: visible;
  position: relative;
  z-index: 2;
  will-change: transform;
}

html.is-intro:not(.is-intro-ready) body::after {
  content: "";
  position: fixed;
  left: 50%;
  top: 50%;
  width: 94px;
  height: 20px;
  margin: -10px 0 0 -47px;
  background: url("/assets/logo.png") center / contain no-repeat;
  z-index: 200;
}

@media (max-width: 1000px) {
  html.is-intro:not(.is-intro-ready) body::after {
    width: 113px;
    height: 24px;
    margin: -12px 0 0 -56.5px;
  }
}

/* Language: hide text until the saved language is applied, then a simple fade on switch */
html.lang-pending [data-i18n] {
  visibility: hidden;
}

[data-i18n] {
  transition: opacity 200ms ease, color 0.15s ease;
}

/* While the intro / page-enter animation runs it hides and reveals these itself;
   a transition here would make them fade out visibly instead of hiding instantly. */
html.is-intro [data-i18n],
html.is-enter [data-i18n] {
  transition: none;
}

html.is-lang-fading [data-i18n] {
  opacity: 0 !important;
  transition: opacity 200ms ease !important;
}

@media (prefers-reduced-motion: reduce) {
  [data-i18n] {
    transition: none;
  }
}