@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-2: #fafafa;
  --border: #e8e8e8;
  --border-strong: #1a1a1a;
  --text: #1a1a1a;
  --muted: #6b6b6b;
  --accent: #d4001a;
  --accent-hover: #a80014;
  --accent-soft: #fff5f6;
  --code-bg: #fafafa;
  --code-text: #1a1a1a;
  --success: #0a7d3e;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-feature-settings: "ss01", "cv11";
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

header.site {
  border-bottom: 1px solid var(--border);
  padding: 20px 32px;
  background: #fff;
  position: sticky; top: 0; z-index: 10;
  display: flex;
  align-items: center;
}
.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.brand::before {
  content: "";
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 2px;
  display: inline-block;
}
.brand:hover { color: var(--accent); }
.brand-sep { color: var(--muted); margin: 0 4px; font-weight: 400; }

main {
  max-width: 920px;
  margin: 0 auto;
  padding: 56px 32px 96px;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.035em;
  line-height: 1.1;
}
h1 + .lead { color: var(--muted); margin: 0 0 40px; font-size: 1.05rem; }
h3 { margin: 0; font-size: 0.95rem; font-weight: 600; letter-spacing: -0.005em; }

.crumbs {
  font-size: 0.825rem;
  color: var(--muted);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}
.crumbs a { color: var(--muted); text-decoration: none; transition: color .12s; }
.crumbs a:hover { color: var(--accent); }
.crumbs span { color: var(--text); }

.grid {
  list-style: none;
  padding: 0; margin: 32px 0 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--border);
}
.card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 4px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: padding .15s, color .15s;
  position: relative;
}
.card::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 50%;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width .2s ease;
  transform: translateY(-50%);
}
.card:hover { padding-left: 16px; color: var(--accent); }
.card:hover::before { width: 12px; }
.card-title { font-weight: 500; font-size: 1.05rem; letter-spacing: -0.01em; }
.card-arrow {
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  transition: color .15s, transform .15s;
}
.card:hover .card-arrow { color: var(--accent); transform: translateX(4px); }

.file {
  background: var(--surface);
  border: 1px solid var(--border);
  margin-bottom: 24px;
  overflow: hidden;
}
.file-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.file-head h3 {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text);
}
.file-head h3 .tag {
  display: inline-block;
  padding: 2px 7px;
  margin-right: 10px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 2px;
  vertical-align: middle;
}

.actions { display: flex; gap: 8px; }
.btn {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--border-strong);
  background: #fff;
  color: var(--text);
  cursor: pointer;
  transition: all .12s ease;
  font-family: inherit;
  letter-spacing: -0.005em;
  border-radius: 0;
}
.btn:hover { background: var(--text); color: #fff; }
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }
.btn.copied { background: var(--success); border-color: var(--success); color: #fff; }

.file pre {
  margin: 0;
  padding: 22px 24px;
  background: var(--code-bg);
  overflow-x: auto;
  font-size: 0.8125rem;
  line-height: 1.7;
  max-height: 560px;
  border-top: 0;
}
.file pre code {
  font-family: 'JetBrains Mono', "SF Mono", Consolas, monospace;
  color: var(--code-text);
  white-space: pre;
  font-weight: 400;
}

.image-wrap {
  display: block;
  padding: 32px;
  text-align: center;
  background: var(--surface-2);
}
.image-wrap img {
  max-width: 100%;
  max-height: 540px;
  display: inline-block;
}
.meta {
  color: var(--muted);
  padding: 18px 20px;
  margin: 0;
  font-size: 0.85rem;
  font-family: 'JetBrains Mono', monospace;
}
.empty { color: var(--muted); font-style: italic; }

main.locked { display: none; }
.gate {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.98);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 24px;
}
.gate-form {
  width: 100%;
  max-width: 380px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.gate-form h2 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.gate-form p {
  margin: 0;
  color: var(--muted);
  font-size: 0.925rem;
}
.gate-form input[type=password] {
  font-family: inherit;
  font-size: 1rem;
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 0;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border-color .12s;
}
.gate-form input[type=password]:focus { border-color: var(--accent); }
.gate-form .btn { justify-content: center; padding: 12px 16px; font-size: 0.925rem; }
.gate-error { color: var(--accent) !important; font-weight: 500; font-size: 0.875rem !important; }
.gate-form.shake { animation: shake .35s ease; }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

@media (max-width: 640px) {
  main { padding: 32px 20px 64px; }
  h1 { font-size: 1.875rem; }
  header.site { padding: 16px 20px; }
  .file-head { padding: 14px 16px; }
  .file pre { padding: 18px; }
}