:root {
  --bg: #12122a;
  --bg2: #1c1b3a;
  --ink: #ece7dc;
  --muted: #9d97be;
  --accent: #d4af37;
  --accent2: #ffd77a;
  --line: #ffffff1f;
}
* {
  box-sizing: border-box;
}
html {
  color: var(--ink);
  background: var(--bg)
    radial-gradient(circle at 50% 0%, #2a2456 0%, #12122a 55%, #0b0b18 100%)
    fixed;
  scroll-behavior: smooth;
  min-height: 100%;
}
html,
button,
select,
input {
  font-family: "Marcellus", Georgia, serif;
  font-size: 16px;
}
body {
  margin: 0;
  padding: 0 0 40px;
}
h1,
h2,
h3 {
  font-weight: normal;
  margin: 0;
}
a {
  color: var(--muted);
  transition: color 0.4s;
}
a:hover {
  color: var(--accent2);
}

#header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 12px 20px 8px;
  background: #12122ae6;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
#header h1 {
  display: inline-block;
  font-size: 22px;
  letter-spacing: 0.04em;
  margin-right: 20px;
}
#header h1 > span {
  color: var(--accent);
}
#header .links {
  float: right;
  padding-top: 6px;
  font-size: 14px;
}
#header .links > a {
  margin-left: 16px;
  text-decoration: none;
}
.nav {
  margin-top: 8px;
  white-space: nowrap;
  overflow-x: auto;
}
.nav > a {
  display: inline-block;
  margin-right: 6px;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 20px;
  color: var(--muted);
  text-decoration: none;
  transition:
    color 0.3s,
    border-color 0.3s,
    background 0.3s;
}
.nav > a:hover {
  color: var(--accent2);
  border-color: #ffd77a66;
}
.nav > a.on {
  color: #12122a;
  background: var(--accent);
  border-color: var(--accent);
}

main {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 24px;
  max-width: 1180px;
  margin: 24px auto;
  padding: 0 20px;
}

.stage {
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #00000026;
  aspect-ratio: 1;
  display: flex;
}
.stage > svg {
  width: 100%;
  height: 100%;
  display: block;
}

.panel > h2 {
  font-size: 25px;
  color: var(--accent2);
}
.panel > .tagline {
  color: var(--muted);
  font-style: italic;
  margin: 2px 0 12px;
}
.panel > .blurb {
  color: var(--muted);
  line-height: 1.55;
  font-size: 14px;
  margin: 0 0 22px;
}
.panel label {
  display: block;
  margin-bottom: 14px;
  font-size: 14px;
  color: var(--muted);
}
.panel label > span {
  display: block;
  margin-bottom: 4px;
}
.panel label b {
  color: var(--accent2);
  font-weight: normal;
}
.panel label.check {
  cursor: pointer;
}
.panel label.check > input {
  margin-right: 8px;
  accent-color: var(--accent);
  vertical-align: -2px;
}
input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}
select {
  width: 100%;
  padding: 6px 8px;
  color: var(--ink);
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 6px;
}
.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}
button {
  flex: 1;
  min-width: 84px;
  padding: 9px 10px;
  color: var(--ink);
  background: #ffffff0f;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  transition:
    background 0.3s,
    color 0.3s,
    border-color 0.3s;
}
button:hover {
  color: var(--accent2);
  border-color: #ffd77a66;
  background: #ffffff1a;
}
.hint {
  margin-top: 14px;
  font-size: 12px;
  color: #7d78a0;
  min-height: 16px;
}

/* --- gallery --- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 20px;
  max-width: 1180px;
  margin: 24px auto;
  padding: 0 20px;
}
.card {
  display: block;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #00000026;
  color: var(--ink);
  text-decoration: none;
  transition:
    border-color 0.4s,
    transform 0.4s;
}
.card:hover {
  border-color: #ffd77a66;
  transform: translateY(-3px);
  color: var(--ink);
}
.card > svg {
  width: 100%;
  display: block;
}
.card > h2 {
  font-size: 18px;
  color: var(--accent2);
  margin-top: 10px;
}
.card > p {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--muted);
  font-style: italic;
}
.intro {
  max-width: 1180px;
  margin: 24px auto 0;
  padding: 0 20px;
  color: var(--muted);
  line-height: 1.6;
}

/* --- drawing animation --- */
.anim [data-len] {
  stroke-dasharray: var(--len, 100);
  stroke-dashoffset: var(--len, 100);
  animation: draw 0.9s ease-out forwards;
}
@keyframes draw {
  to {
    stroke-dashoffset: 0;
  }
}

.footer {
  max-width: 1180px;
  margin: 40px auto 0;
  padding: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}
.footer a {
  color: var(--accent2);
}

@media only screen and (max-width: 860px) {
  main {
    grid-template-columns: 1fr;
  }
  #header h1 {
    font-size: 19px;
  }
  #header .links {
    float: none;
    display: block;
    padding: 4px 0 0;
  }
  #header .links > a {
    margin: 0 16px 0 0;
  }
}