/* ==========================================================
   Minimal / Monotone base styles
   ========================================================== */
:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #6b6b6b;
  --color-border: #e5e5e5;
  --color-accent: #111111;
  --max-width: 860px;
  --font-base: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic",
    "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* Header / Nav */
.site-header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-border);
}

.avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-border);
  margin-bottom: 24px;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.92rem;
  color: var(--color-muted);
  transition: color 0.15s ease;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
}

/* Hero */
.hero {
  padding: 96px 0 64px;
  border-bottom: 1px solid var(--color-border);
}

.hero-eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.3;
  margin: 0 0 20px;
}

.hero p {
  color: var(--color-muted);
  font-size: 1.05rem;
  max-width: 560px;
}

.hero-links {
  margin-top: 32px;
  display: flex;
  gap: 16px;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  font-size: 0.92rem;
  transition: background 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: #333;
}

.btn-outline:hover {
  background: var(--color-accent);
  color: #fff;
}

/* Section */
.section {
  padding: 64px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.section-title {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 32px;
}

.about-text p {
  max-width: 640px;
  color: #333;
}

/* Portfolio grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 28px;
}

.card {
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
}

.card-thumb {
  aspect-ratio: 16 / 10;
  background: #f2f2f2;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #b3b3b3;
  font-size: 0.8rem;
}

.card-body {
  padding: 18px 20px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-body h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.card-body p {
  color: var(--color-muted);
  font-size: 0.92rem;
  margin: 0 0 14px;
  flex: 1;
}

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

.tag {
  font-size: 0.75rem;
  color: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 3px 10px;
}

.card-link {
  font-size: 0.85rem;
  font-weight: 600;
  border-top: 1px solid var(--color-border);
  padding: 12px 20px;
  color: var(--color-text);
}

.card-link:hover {
  background: #fafafa;
}

/* Blog horizontal scroll (homepage) */
.blog-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.blog-scroll-item {
  flex: 0 0 220px;
  scroll-snap-align: start;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.blog-scroll-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
}

.blog-scroll-thumb {
  aspect-ratio: 4 / 3;
  background: #f2f2f2;
  overflow: hidden;
}

.blog-scroll-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-scroll-date {
  font-size: 0.78rem;
  color: var(--color-muted);
  margin: 12px 14px 4px;
}

.blog-scroll-title {
  font-size: 0.92rem;
  margin: 0 14px 16px;
  line-height: 1.5;
}

/* Blog list */
.post-list {
  display: flex;
  flex-direction: column;
}

.post-item {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
}

.post-item:first-child {
  padding-top: 0;
}

.post-thumb {
  flex: 0 0 160px;
  aspect-ratio: 4 / 3;
  background: #f2f2f2;
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #b3b3b3;
  font-size: 0.75rem;
}

.post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-content {
  flex: 1;
  min-width: 0;
}

.post-date {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: 6px;
}

.post-content h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.post-content p {
  color: var(--color-muted);
  font-size: 0.92rem;
  margin: 0 0 10px;
}

.post-source {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
}

.post-source::after {
  content: "→";
  transition: transform 0.15s ease;
}

.post-item:hover .post-source::after {
  transform: translateX(3px);
}

.note-embed-wrap {
  margin: 40px 0;
}

.note-embed-wrap iframe {
  border: 0;
  width: 100%;
  border-radius: 6px;
}

.song-embed {
  max-width: 660px;
}

.song-caption {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0 0 10px;
}

.song-embed iframe {
  border: 0;
  width: 100%;
  overflow: hidden;
  border-radius: 10px;
}

.song-reroll {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding: 6px 4px;
  border: none;
  background: none;
  color: var(--color-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: color 0.15s ease;
}

.song-reroll:hover {
  color: var(--color-text);
}

/* Footer */
.site-footer {
  padding: 40px 0;
  color: var(--color-muted);
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.social-links {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

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

/* Responsive */
@media (max-width: 640px) {
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 16px 24px;
    display: none;
    gap: 16px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .post-item {
    flex-direction: column;
  }

  .post-thumb {
    flex: none;
    width: 100%;
    aspect-ratio: 16 / 9;
  }
}