/* ==========================================================================
   unsoluble_sugar Portfolio — Light Theme
   ========================================================================== */

/* --- CSS Custom Properties --- */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f7f8fa;
  --color-bg-card: #ffffff;
  --color-text: #1a1a2e;
  --color-text-sub: #6b7280;
  --color-text-muted: #9ca3af;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-accent-light: #eff6ff;
  --color-border: #e5e7eb;
  --color-shadow: rgba(0, 0, 0, 0.06);
  --color-shadow-hover: rgba(0, 0, 0, 0.12);
  --color-like: #e05672;

  --font-sans: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

  --max-width: 1100px;
  --nav-height: 60px;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

@media (hover: hover) {
  html, body {
    cursor: none;
  }
  html a, html button, html summary, html input, html textarea, html select {
    cursor: none;
  }
}

/* --- Custom Cursor (Cat) --- */
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 22px;
  height: 22px;
  font-size: 20px;
  line-height: 1;
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 9999;
  filter: drop-shadow(0 0 2px rgba(251, 191, 36, 0.5));
  animation: star-twinkle 1.8s ease-in-out infinite;
  user-select: none;
  text-align: center;
}

@keyframes star-twinkle {
  0%, 100% {
    transform: translate(-50%, -50%) rotate(-8deg) scale(1);
    opacity: 1;
  }
  50% {
    transform: translate(-50%, -50%) rotate(8deg) scale(1.1);
    opacity: 0.95;
  }
}

.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 9998;
  opacity: 0.6;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.3) 0%, rgba(251, 191, 36, 0) 70%);
  transition: width 0.3s, height 0.3s, opacity 0.3s;
  will-change: transform;
}

.cursor-ring--hover {
  width: 56px;
  height: 56px;
  opacity: 0.75;
}

.cursor-spark {
  position: fixed;
  top: 0;
  left: 0;
  width: 10px;
  height: 10px;
  color: #fbbf24;
  pointer-events: none;
  z-index: 9997;
  filter: drop-shadow(0 0 1.5px rgba(251, 191, 36, 0.5));
  animation: spark-fade 900ms ease-out forwards;
}

.cursor-spark svg {
  width: 100%;
  height: 100%;
  display: block;
}

@keyframes spark-fade {
  0% {
    opacity: 0.9;
    transform: translate(-50%, -50%) rotate(0deg) scale(0.4);
  }
  30% {
    opacity: 1;
    transform: translate(-50%, -50%) rotate(60deg) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, calc(-50% + 24px)) rotate(180deg) scale(0.2);
  }
}

@media (hover: none) {
  .cursor-spark {
    display: none;
  }
}

/* タッチデバイスではカスタムカーソルを無効化 */
@media (hover: none) {
  .cursor-dot, .cursor-ring {
    display: none;
  }
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.nav--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 8px var(--color-shadow);
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  font-family: var(--font-mono);
}

.nav__logo:hover {
  color: var(--color-accent);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__links {
  display: flex;
  gap: 32px;
}

.nav__links a {
  color: var(--color-text-sub);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}

.nav__links a:hover {
  color: var(--color-accent);
}

/* --- Hero --- */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(180deg, var(--color-accent-light) 0%, var(--color-bg) 100%);
}

.hero__content {
  display: flex;
  align-items: flex-start;
  gap: 48px;
}

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

.hero__avatar img {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-bg);
  box-shadow: 0 8px 32px var(--color-shadow);
}

.hero__name {
  margin-bottom: 8px;
}

.hero__name-ja {
  display: block;
  font-size: 36px;
  font-weight: 700;
  line-height: 1.2;
}

.hero__name-en {
  display: block;
  font-size: 16px;
  color: var(--color-text-sub);
  font-weight: 400;
  margin-top: 4px;
}

.hero__tagline {
  font-size: 18px;
  color: var(--color-accent);
  font-weight: 500;
  font-family: var(--font-mono);
  margin-bottom: 12px;
}

.hero__role {
  font-size: 15px;
  color: var(--color-text-sub);
  margin-bottom: 8px;
}

.hero__side-roles {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.hero__side-roles li {
  font-size: 13px;
  color: var(--color-text-sub);
  background: var(--color-bg-alt);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--color-border);
}

.hero__bio {
  font-size: 15px;
  color: var(--color-text-sub);
  line-height: 1.8;
  margin-bottom: 20px;
}

.hero__social {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero__social-link {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-sub);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all var(--transition);
}

.hero__social-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

/* --- Scroll Hint (in Hero) --- */
.hero {
  position: relative;
}

.hero__scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--color-text-sub);
  text-decoration: none;
  opacity: 0.6;
  animation: scroll-hint-bounce 2s ease-in-out infinite;
  transition: opacity 0.4s, color 0.2s, visibility 0.4s;
}

.hero__scroll-hint:hover {
  opacity: 1;
  color: var(--color-accent);
}

.hero__scroll-hint--hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.hero__scroll-hint-arrow {
  width: 26px;
  height: 26px;
}

@keyframes scroll-hint-bounce {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(6px);
  }
}

/* --- Back to Top Button --- */
.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--color-text-sub);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.6s ease, transform 0.6s ease, visibility 0.6s, background 0.2s, color 0.2s, border-color 0.2s;
  z-index: 900;
}

.back-to-top svg {
  width: 18px;
  height: 18px;
}

.back-to-top:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: #fff;
}

.back-to-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* --- Section Common --- */
.section {
  padding: 80px 0;
}

.section:nth-child(even) {
  background: var(--color-bg-alt);
}

.section__title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 12px;
}

.section__title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

/* --- Skills --- */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

.skills__category-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-sub);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.skills__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skills__chip {
  display: inline-block;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  transition: all var(--transition);
}

.skills__chip:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 2px 8px var(--color-shadow);
}

.skills__certifications {
  margin-top: 32px;
}

/* --- Career --- */
.career__timeline {
  position: relative;
  padding-left: 32px;
  margin-bottom: 48px;
}

.career__timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border);
}

.career__item {
  position: relative;
  margin-bottom: 32px;
}

.career__item:last-child {
  margin-bottom: 0;
}

.career__dot {
  position: absolute;
  left: -32px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.career__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.career__company {
  font-size: 20px;
  font-weight: 700;
}

.career__role {
  font-size: 15px;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 4px;
}

.career__period {
  font-size: 13px;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.career__description {
  font-size: 15px;
  color: var(--color-text-sub);
  margin-bottom: 8px;
}

.career__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.career__tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all var(--transition);
}

.career__tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.career__articles {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.career__article-link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-sub);
  transition: color var(--transition);
}

.career__article-link::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
  position: relative;
  top: -1px;
}

.career__article-link:hover {
  color: var(--color-accent);
}

.career__articles-more {
  margin-top: 4px;
}

.career__articles-more summary {
  cursor: pointer;
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 500;
  padding: 4px 0;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.career__articles-more summary::-webkit-details-marker {
  display: none;
}

.career__articles-more summary::before {
  content: "▸";
  font-size: 10px;
  transition: transform 0.2s;
}

.career__articles-more[open] summary::before {
  transform: rotate(90deg);
}

.career__articles-more-close {
  display: none;
}

.career__articles-more[open] .career__articles-more-open {
  display: none;
}

.career__articles-more[open] .career__articles-more-close {
  display: inline;
}

.career__articles-more summary:hover {
  color: var(--color-accent-hover);
}

.career__articles-more[open] summary {
  margin-bottom: 4px;
}

.career__articles-more .career__article-link {
  display: flex;
  margin-top: 4px;
}

.career__sub-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
}

.career__education {
  margin-bottom: 40px;
}

.career__edu-item {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.career__edu-school {
  font-weight: 600;
  font-size: 16px;
}

.career__edu-degree {
  font-size: 14px;
  color: var(--color-text-sub);
}

.career__edu-period {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-left: auto;
}

.career__awards-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.career__award {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.career__award-year {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 13px;
}

.career__award-name {
  color: var(--color-text);
}

/* --- Projects --- */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.projects__card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.projects__card:hover {
  box-shadow: 0 8px 24px var(--color-shadow-hover);
  transform: translateY(-2px);
}

.projects__card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
  gap: 12px;
}

.projects__name {
  font-size: 18px;
  font-weight: 700;
}

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

.projects__name a:hover {
  color: var(--color-accent);
}

.projects__languages {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.projects__lang {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 2px 10px;
  border-radius: 12px;
}

.projects__description {
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.6;
  margin-bottom: 12px;
}

.projects__article {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  padding: 10px 14px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-text-sub);
  line-height: 1.5;
  transition: all var(--transition);
}

.projects__article:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.projects__article svg {
  width: 14px;
  height: 14px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.projects__links {
  display: flex;
  gap: 12px;
  margin-top: auto;
  padding-top: 12px;
}

.projects__link {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-sub);
  padding: 6px 16px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all var(--transition);
}

.projects__link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.projects__link--demo {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

.projects__link--demo:hover {
  background: var(--color-accent);
  color: #fff;
}

/* --- Community --- */
.community__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 24px;
}

.community__card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}

.community__card:hover {
  box-shadow: 0 8px 24px var(--color-shadow-hover);
  transform: translateY(-2px);
}

.community__header {
  margin-bottom: 16px;
}

.community__name-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.community__name a {
  color: inherit;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}

.community__name a:hover {
  color: var(--color-accent);
}

.community__name-link-icon {
  width: 16px;
  height: 16px;
  opacity: 0.5;
  transition: opacity var(--transition);
}

.community__name a:hover .community__name-link-icon {
  opacity: 1;
}

.community__meta {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}

.community__name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}

.community__subtitle {
  font-size: 14px;
  color: var(--color-text-sub);
  margin-bottom: 8px;
}

.community__role {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 4px 12px;
  border-radius: 12px;
}

.community__description {
  font-size: 15px;
  color: var(--color-text-sub);
  line-height: 1.7;
  margin-bottom: 16px;
}

.community__featured-article {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 12px 0 16px;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition);
  max-width: 100%;
}

.community__featured-article:hover {
  border-color: var(--color-accent);
  box-shadow: 0 2px 8px var(--color-shadow);
}

.community__featured-article-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.community__featured-article-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  flex: 1;
  line-height: 1.5;
}

.community__featured-article-arrow {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
}

@media (max-width: 480px) {
  .community__featured-article {
    flex-wrap: wrap;
    gap: 6px 12px;
  }
  .community__featured-article-title {
    flex-basis: 100%;
    order: 2;
  }
  .community__featured-article-arrow {
    order: 1;
    margin-left: auto;
  }
}

.community__video {
  margin: 16px 0;
}

.community__video-caption {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-sub);
  margin-bottom: 8px;
}

.community__video-caption svg {
  width: 12px;
  height: 12px;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* --- Writing --- */
.writing__platforms {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.writing__platform {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}

.writing__platform:hover {
  box-shadow: 0 8px 24px var(--color-shadow-hover);
  transform: translateY(-2px);
}

.writing__platform-header {
  margin-bottom: 12px;
}

.writing__platform-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.writing__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.writing__stat {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.writing__platform-desc {
  font-size: 14px;
  color: var(--color-text-sub);
  margin-bottom: 12px;
}

.writing__articles {
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
}

.writing__article {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 8px 0;
  font-size: 14px;
}

.writing__article a {
  color: var(--color-text);
  flex: 1;
}

.writing__article a:hover {
  color: var(--color-accent);
}

.writing__likes {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 13px;
  color: var(--color-like);
  font-weight: 600;
  white-space: nowrap;
}

.writing__heart-icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.writing__talks-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
}

.writing__talks-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
  gap: 24px;
}

.writing__talk-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}

.writing__talk-card:hover {
  box-shadow: 0 8px 24px var(--color-shadow-hover);
  transform: translateY(-2px);
}

.writing__talk-header {
  margin-bottom: 16px;
}

.writing__talk-title {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.writing__talk-title:hover {
  color: var(--color-accent);
}

.writing__talk-meta {
  display: flex;
  gap: 12px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.writing__talk-views {
  font-weight: 500;
}

/* --- Video Card --- */
.writing__video-embed {
  margin-top: 12px;
}

.writing__video-caption {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-sub);
  margin-top: 12px;
  margin-bottom: 0;
}

.writing__video-caption svg {
  width: 12px;
  height: 12px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.writing__video-caption + .writing__video-embed {
  margin-top: 8px;
}

.writing__video-embed + .writing__video-embed {
  margin-top: 16px;
}

.writing__video-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-sub);
  margin-bottom: 8px;
}

.writing__video-label:hover {
  color: var(--color-accent);
}

.slide-wrapper--video {
  aspect-ratio: 16 / 9;
}

/* --- Slide Embed --- */
.writing__slide-embed {
  margin-bottom: 12px;
}

.slide-wrapper {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  aspect-ratio: 16 / 9;
}

.slide-wrapper iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.writing__talk-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 6px 16px;
  border: 1px solid var(--color-accent);
  border-radius: 20px;
  transition: all var(--transition);
}

.writing__talk-link:hover {
  background: var(--color-accent);
  color: #fff;
}

/* file:// ではiframe埋め込みが動かないため、リンクのみ表示 */
.slide-link-fallback {
  display: none;
}

.is-local-file .writing__slide-embed {
  display: none;
}

.is-local-file .slide-link-fallback {
  display: inline-flex;
}

/* --- Links --- */
.links__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.links__card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-weight: 500;
  font-size: 15px;
  transition: all var(--transition);
}

.links__card:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 4px 16px var(--color-shadow);
  transform: translateY(-1px);
}

.links__icon {
  width: 28px;
  height: 24px;
  flex-shrink: 0;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.links__icon svg {
  width: 20px;
  height: 20px;
}

.links__icon--wide {
  width: auto;
}

.links__icon--wide svg {
  width: auto;
  height: 18px;
  max-width: 70px;
}

.links__icon img {
  max-width: 28px;
  max-height: 20px;
  width: auto;
  height: auto;
  object-fit: contain;
}

/* --- Footer --- */
.footer {
  padding: 32px 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer p {
  font-size: 14px;
  color: var(--color-text-muted);
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in--visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 16px;
    box-shadow: 0 8px 24px var(--color-shadow);
  }

  .nav__links--open {
    display: flex;
  }

  .hero {
    padding: 100px 0 72px;
  }

  .hero__scroll-hint {
    display: flex;
    bottom: 12px;
  }

  .hero__content {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
  }

  .hero__avatar img {
    width: 120px;
    height: 120px;
  }

  .hero__name-ja {
    font-size: 28px;
  }

  .hero__side-roles {
    justify-content: center;
  }

  .hero__br-pc {
    display: none;
  }

  .hero__social {
    justify-content: center;
  }

  .section {
    padding: 48px 0;
  }

  .section__title {
    font-size: 24px;
    margin-bottom: 28px;
  }

  .skills__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

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

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

  .writing__talks-list {
    grid-template-columns: 1fr;
  }

  .links__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .writing__article {
    flex-direction: column;
    gap: 4px;
  }
}

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