:root {
    --background: #1d4f91;
    --grid: rgba(255, 255, 255, 0.10);
    --grid-strong: rgba(255, 255, 255, 0.22);
    --text: #f2f7ff;
    --soft-text: #b9d0ee;
    --accent: #ffd166;
    --panel: rgba(255, 255, 255, 0.06);
}

:root[data-theme="dark"] {
    --background: #0c2444;
    --grid: rgba(255, 255, 255, 0.06);
    --grid-strong: rgba(255, 255, 255, 0.15);
    --text: #c0c8d4;
    --soft-text: #8195af;
    --accent: #be9c29;
    --panel: rgba(255, 255, 255, 0.04);
}

* {
    box-sizing: border-box;
}

main {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 20px 40px;
}

body {
    margin: 0;
    background-color: var(--background);
    color: var(--text);
    font-family: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
    line-height: 1.65;

    background-image:
    linear-gradient(var(--grid-strong) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-strong) 1px, transparent 1px),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
    background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
}

.frame {
    border: 3px double var(--soft-text);
    background: var(--background);
    padding: 20px;
}

h1, h2, h3 {
    font-family: "Barlow Condensed", "Arial Narrow", Impact, sans-serif;
    font-weight: 700;
    line-height: 1.05;
    margin: 0;
}

h1 {
    font-size: clamp(3rem, 12vw, 6rem);
}

h2 {
  font-size: clamp(2rem, 6vw, 3.2rem);
  margin-bottom: 20px;
}

.tagline {
  color: var(--soft-text);
  margin: 8px 0 28px;
}

.sheet-label {
  color: var(--accent);
  font-size: 0.8rem;
  margin: 0 0 6px;
}

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

p {
    max-width: 80ch;
}

.index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.index a {
  display: block;
  padding: 16px;
  border: 2px solid var(--accent);
  text-decoration: none;
  color: var(--accent);
  background: var(--panel);
}

.index a:hover,
.index a:focus-visible {
  background: var(--accent);
  color: var(--background);
}

.index b {
  display: block;
  font-family: "Barlow Condensed", "Arial Narrow", Impact, sans-serif;
  font-size: 1.8rem;
  line-height: 1.1;
}

.index small {
  display: block;
  font-size: 0.8rem;
}

.title-block {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  border: 2px solid var(--soft-text);
  margin-top: 28px;
  font-size: 0.75rem;
}

.title-block div {
  padding: 8px 12px;
  border-right: 1px solid var(--soft-text);
}

.title-block div:last-child {
  border-right: none;
}

.title-block b {
  display: block;
  color: var(--accent);
  font-weight: 400;
}

.back {
  display: inline-block;
  margin-bottom: 16px;
  font-size: 0.85rem;
}

.photo {
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  text-align: center;
  border: 2px dashed var(--soft-text);
  color: var(--soft-text);
  font-size: 0.8rem;
  padding: 10px;
  background: var(--panel);
}

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

.project-cards {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.project-card {
  border: 2px solid var(--soft-text);
  background: var(--panel);
}

.project-card .photo {
  border: none;
  border-bottom: 2px solid var(--soft-text);
}

.card-body {
  padding: 14px;
}

.project-card h3 {
  font-size: 1.6rem;
}

.project-card p {
  margin: 8px 0;
  font-size: 0.9rem;
}

dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 14px;
  margin: 10px 0 0;
  font-size: 0.8rem;
  border-top: 1px solid var(--grid-strong);
  padding-top: 8px;
}

dt { color: var(--accent); }
dd { margin: 0; }

.about-index {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: start;
}

.about-index h3 {
  font-size: 1.4rem;
  color: var(--accent);
  margin: 18px 0 6px;
}

.about-index ul {
  margin: 0;
  padding-left: 1.1em;
  font-size: 0.9rem;
}

.links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.links a {
  display: block;
  padding: 14px 16px;
  border: 2px solid var(--soft-text);
  background: var(--panel);
  text-decoration: none;
  color: var(--text);
}

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

.links small {
  display: block;
  color: var(--soft-text);
}

@media (max-width: 600px) {
  .title-block { grid-template-columns: 1fr; }
  .title-block div { border-right: none; border-bottom: 1px solid var(--soft-text); }
  .title-block div:last-child { border-bottom: none; }
}

@keyframes open {
  from { clip-path: inset(0 0 100% 0); }
  to   { clip-path: inset(0 0 0 0); }
}

body.inner .frame {
  animation: open 0.5s ease-out;
}

@media (prefers-reduced-motion: reduce) {
  body.inner .frame { animation: none; }
}

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 12px auto;
    padding: 6px 12px;
    font: inherit;
    font-size: 0.8rem;
    color: var(--accent);
    background: var(--background);
    border: 2px solid var(--accent);
    cursor: pointer;
}

.theme-toggle img {
    display: block;
    width: 16px;
    height: 16px;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
    background: var(--accent);
    color: var(--background);
}