:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --text: #e6e8ee;
  --muted: #9aa2b1;
  --accent: #5b8cff;
  --accent-2: #7c5cff;
  --border: #2a2f3a;
  --danger: #ff6b6b;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.3; }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 20px; border-bottom: 1px solid var(--border); background: var(--panel);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); }
.logo { height: 22px; width: auto; display: block; }
.tag { color: var(--muted); font-size: 11px; border: 1px solid var(--border); padding: 2px 8px; border-radius: 999px; white-space: nowrap; }
.userbox { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 14px; }
button.link {
  background: none; border: none; color: var(--accent); cursor: pointer; font-size: 14px; padding: 0;
}
button.link:hover { text-decoration: underline; }

.container { max-width: 860px; margin: 0 auto; padding: 28px 20px 64px; }
.center { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.muted { color: var(--muted); }
.back { display: inline-block; margin-bottom: 8px; color: var(--muted); font-size: 14px; }

.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 18px 20px; margin: 14px 0;
}

.login-wrap { width: min(380px, 100%); }
.logo-login { display: block; width: min(300px, 78%); height: auto; margin: 0 auto 22px; }
.login { width: 100%; margin: 0; }
.login h1 { margin-top: 0; }
.login label { display: block; margin: 14px 0 4px; font-size: 14px; color: var(--muted); }
.login input {
  width: 100%; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
}
.login button[type=submit], .dl {
  margin-top: 18px; width: 100%; padding: 11px 14px; border: none; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white; font-weight: 600; cursor: pointer; font-size: 15px;
}
.error { color: var(--danger); font-size: 14px; margin: 8px 0 0; }
.success { color: #7ee2a8; font-size: 14px; margin: 8px 0 0; }
.narrow { max-width: 420px; }

.game-grid { list-style: none; padding: 0; display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.game-grid .card { margin: 0; }
.game-grid a { color: var(--text); display: block; }
.game-grid h2 { margin: 0 0 6px; font-size: 18px; }

.release h2 { margin-top: 0; }
.downloads { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0; }
.dl {
  width: auto; margin: 0; display: inline-flex; align-items: center; gap: 8px;
  text-decoration: none;
}
.dl .size { font-weight: 400; font-size: 12px; opacity: 0.8; }
.dl:hover { text-decoration: none; opacity: 0.92; }

.prose { white-space: pre-wrap; word-break: break-word; background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; font-family: inherit; margin: 8px 0 4px; overflow-x: auto; }

details.card summary { cursor: pointer; font-weight: 600; }
details.card[open] summary { margin-bottom: 10px; }

/* 開発ステータスのバッジ */
.status { display: inline-block; font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 999px; border: 1px solid transparent; white-space: nowrap; }
.st-active    { color: #7ee2a8; background: rgba(46,160,87,0.14); border-color: rgba(46,160,87,0.4); }
.st-paused    { color: #ffd27a; background: rgba(210,153,34,0.14); border-color: rgba(210,153,34,0.4); }
.st-completed { color: #b6bcc8; background: rgba(139,148,158,0.14); border-color: rgba(139,148,158,0.4); }

.card-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 4px; }
.card-head h2 { margin: 0; }
.title-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.title-row h1 { margin: 0; }

/* プレビュー画像ギャラリー */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; margin: 16px 0; }
.shot { display: block; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: var(--panel-2); aspect-ratio: 16 / 9; }
.shot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.shot:hover { border-color: var(--accent); }

/* 管理画面 */
.adminnav { display: flex; gap: 16px; padding: 8px 0 4px; border-bottom: 1px solid var(--border); margin-bottom: 12px; font-size: 14px; }
.tbl { width: 100%; border-collapse: collapse; margin: 8px 0 20px; font-size: 14px; }
.tbl th, .tbl td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.tbl th { color: var(--muted); font-weight: 600; }
.card label, .card.login label { display: block; margin: 12px 0 4px; font-size: 14px; color: var(--muted); }
.card input[type=text], .card input:not([type]), .card select, .card textarea,
.card.login input, .card input[name] {
  width: 100%; padding: 9px 11px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-family: inherit; font-size: 14px;
}
.card textarea { resize: vertical; }
.card button[type=submit], .rel-edit button[type=submit] {
  margin-top: 14px; padding: 9px 16px; border: none; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font-weight: 600; cursor: pointer;
}
.danger-btn { background: var(--danger) !important; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 8px; margin: 8px 0; }
.check { display: flex; align-items: center; gap: 8px; color: var(--text); margin: 0; }
.check input { width: auto; }
.actions-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.actions-row form { margin: 0; }
.actions-row button { margin-top: 0; padding: 8px 14px; border: 1px solid var(--border); border-radius: 8px; background: var(--panel-2); color: var(--text); cursor: pointer; }
.shot-admin { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: var(--panel-2); }
.shot-admin img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
.shot-admin form { text-align: center; padding: 4px; }
.rel-edit { border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin: 12px 0; }
.rel-edit h3 { margin: 0 0 6px; }
.bin-note { border-top: 1px dashed var(--border); margin-top: 10px; padding-top: 6px; }

/* プラットフォーム別の注意 */
.platform-notes { display: grid; gap: 10px; margin: 8px 0 4px; }
.pnote { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; background: var(--panel-2); }
.pnote-tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--accent); margin-bottom: 6px; }

/* Markdown 描画（概要・CHANGELOG・起動方法・注意） */
.markdown { line-height: 1.7; word-break: break-word; }
.markdown > *:first-child { margin-top: 0; }
.markdown > *:last-child { margin-bottom: 0; }
.markdown h1, .markdown h2, .markdown h3, .markdown h4 { line-height: 1.35; margin: 1.3em 0 0.5em; }
.markdown h1 { font-size: 1.3rem; }
.markdown h2 { font-size: 1.15rem; border-bottom: 1px solid var(--border); padding-bottom: 4px; }
.markdown h3 { font-size: 1.02rem; }
.markdown h4 { font-size: 0.95rem; color: var(--muted); }
.markdown p { margin: 0.6em 0; }
.markdown ul, .markdown ol { margin: 0.6em 0; padding-left: 1.4em; }
.markdown li { margin: 0.25em 0; }
.markdown a { color: var(--accent); }
.markdown strong { color: #fff; }
.markdown hr { border: none; border-top: 1px solid var(--border); margin: 1.3em 0; }
.markdown code { background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; font-size: 0.9em; }
.markdown pre { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; overflow-x: auto; }
.markdown pre code { background: none; border: none; padding: 0; }
.markdown blockquote { border-left: 3px solid var(--border); margin: 0.6em 0; padding: 0.2em 0 0.2em 12px; color: var(--muted); }
.markdown table { border-collapse: collapse; margin: 0.8em 0; font-size: 0.92em; display: block; overflow-x: auto; }
.markdown th, .markdown td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; white-space: nowrap; }
.markdown th { background: var(--panel-2); }
.md-box { background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; margin: 8px 0 4px; }

@media (max-width: 480px) {
  .topbar { padding: 12px 14px; }
  .tag { display: none; }
  .container { padding: 20px 14px 56px; }
}