:root {
  --max-width: 560px;
  --gap: 1rem;
  --card-radius: 16px;
  --btn-radius: 12px;
  --bg: #fafafa;
  --text: #111;
  --muted: #666;
  --surface: #fff;
  --border: #eaeaea;
  --accent: #0000ff;
  --font-body: 'IBM Plex Sans', 'IBM Plex Sans JP', sans-serif;
  --font-heading: 'IBM Plex Sans', 'IBM Plex Sans JP', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

@media (prefers-color-scheme: dark) {
  :root{
    --bg:#0b0b0c;
    --text:#f3f3f3;
    --muted:#b2b2b2;
    --surface:#141417;
    --border:#202027;
    --accent: #0f0fff;
  }
}

*{ box-sizing: border-box; }
html,body { 
  height:100%; 
}

body {
  margin:0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  display: grid;
  grid-template-rows: auto 1fr auto;
  justify-items: center;
  align-content: start;  
}

.wrapper {
  width: min(100%, var(--max-width));
  margin-inline: auto;
  padding: 4rem 1.25rem 1.25rem;
  display: grid;
  gap: var(--gap);
  justify-items: center;
  align-content: start;
}

.site-header {
  width: 100%;
  text-align: center;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.site-header h1.logo-heading {
  font-family: var(--font-heading);
  font-weight: 200;
  font-size: clamp(32px, 8vw, 130px);
  line-height: 1.05;
  letter-spacing: 0.02em;
  margin: 0;
}

.logo-heading svg {
  padding: 2rem 1rem 1rem;
  width: 480px;
  height: auto;
  display: block;
  margin: 0 auto;
  fill: currentColor;
}

.separator {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.8rem 0;
  width: min(100%, 400px);
}

.card {
  display: block;
  text-decoration: none;
  color: inherit;
  position: relative;
  width: min(100%, 420px);
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(0,0,0,.06);
  transition: transform .1s ease, box-shadow .12s ease, border-color .12s ease;
  margin-inline: auto;
}

.card-image {
  position: relative;
}

.card-image::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  -webkit-backdrop-filter: blur(10px) saturate(1.2);
  backdrop-filter: blur(10px) saturate(1.2);
  -webkit-mask-image: linear-gradient(to bottom, transparent 40%, black 100%);
          mask-image: linear-gradient(to bottom, transparent 40%, black 100%);
}

.card-image::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(0,0,0,0) 50%, var(--surface) 100%);
  background: linear-gradient(to bottom, rgba(0,0,0,0) 50%,
    color-mix(in srgb, var(--surface) 50%, transparent) 65%,
    color-mix(in srgb, var(--surface) 75%, transparent) 80%,
    color-mix(in srgb, var(--surface) 80%, transparent) 85%,
    color-mix(in srgb, var(--surface) 90%, transparent) 90%,
    var(--surface) 100%);
}

.card-label {
  text-align: center;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card-media {
  background: linear-gradient(135deg, #d9d9d9, #bfbfbf);
  aspect-ratio: 9 / 16;
  width: 100%;
  max-height: 500px;
  margin-inline: auto;
}

.card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}

.card-body {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  column-gap: 0.75rem;
  padding: 0.75rem 1rem 1rem;
}

.card-body .title {
  grid-column: 1;
  grid-row: 1;
  margin: 0 0 0.25rem;
  font-size: 1rem;
  font-weight: 600;
}

.card-body .subtitle {
  grid-column: 1;
  grid-row: 2;
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.card-icon {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;         
  justify-self: end;          
  display: inline-flex;       
  -webkit-tap-highlight-color: transparent;
}

.card-icon svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
  color: var(--muted);
  transition: color .1s ease;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 18px rgba(0,0,0,.08);
}

.card:active {
  box-shadow: 0 2px 8px rgba(0,0,0,.06) inset;
}

.card:hover .card-icon svg {
  color: var(--accent);
}


.socials {
  display: flex;
  justify-content: center;
  gap: 1.3rem;
  margin: 0;
}

.socials a {
  color: var(--text);
  transition: 
    transform .1s ease,
    border-color .12s ease;
  -webkit-tap-highlight-color: transparent;
}

.socials a:hover,
.socials a:active {
  color: var(--accent);
}


.socials svg {
  display: block;
  width: 28px;
  height: 28px;
  fill: currentColor;
}

.link-stack {
  width: 100%;
  display: grid;
  gap: var(--gap);
  justify-items: center;
}

.stack-btn {
  width: min(100%, 420px);
  display: inline-block;
  text-align: center;
  padding: 0.9rem 1.1rem;
  border-radius: var(--btn-radius);
  background: var(--surface);
  color: var(--text);
  border: 2px solid var(--border);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.2px;
  transition: transform .1s ease, box-shadow .12s ease, border-color .12s ease;
  box-shadow: 0 2px 10px rgba(0,0,0,.05);
}

.stack-btn:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 18px rgba(0,0,0,.08);
}

.stack-btn:active {
  box-shadow: 0 2px 8px rgba(0,0,0,.06) inset;
}

footer {
  color: var(--border);
  font-family: var(--font-mono);
  margin-top: auto;
  padding: 12px;
  text-align: center;
}

@media (max-width: 480px) {
  .wrapper {
    padding: 2rem 1rem 1rem;
  }
  
  .logo-heading svg {
    padding: 1rem 0.5rem 0.5rem;
    width: min(400px, 100vw - 2rem);
    height: auto;
  }
  
  body {
    overflow-x: hidden;
  }
  
  .card {
    width: min(100%, 420px);
  }
  
  .stack-btn {
    width: min(100%, 420px);
  }
}