/* cvtGH: giao diện kiểu GitHub, tự đổi sáng/tối theo hệ điều hành */
:root {
  --bg: #ffffff;
  --bg-subtle: #f6f8fa;
  --bg-muted: #eff2f5;
  --fg: #1f2328;
  --fg-muted: #59636e;
  --border: #d1d9e0;
  --accent: #0969da;
  --success: #1a7f37;
  --danger: #cf222e;
  --warning: #9a6700;
  --add-bg: #dafbe1;
  --del-bg: #ffebe9;
  --hunk-bg: #ddf4ff;
  --topbar-bg: #1f2328;
  --topbar-fg: #ffffff;
  --radius: 6px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --bg-subtle: #151b23;
    --bg-muted: #212830;
    --fg: #e6edf3;
    --fg-muted: #9198a1;
    --border: #3d444d;
    --accent: #4493f8;
    --success: #3fb950;
    --danger: #f85149;
    --warning: #d29922;
    --add-bg: rgba(46, 160, 67, 0.15);
    --del-bg: rgba(248, 81, 73, 0.15);
    --hunk-bg: rgba(56, 139, 253, 0.15);
    --topbar-bg: #010409;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 14px/1.5 var(--font); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre { font-family: var(--mono); font-size: 12.5px; }
h1 { font-size: 24px; margin: 16px 0; }
h2 { font-size: 20px; margin: 16px 0 8px; }
h3 { font-size: 16px; margin: 16px 0 8px; }
.muted { color: var(--fg-muted); }
.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 640px; margin: 0 auto; }
.footer { padding: 32px 16px; font-size: 12px; }

/* Thanh trên cùng */
.topbar { background: var(--topbar-bg); color: var(--topbar-fg); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; flex-wrap: wrap; }
.brand { color: var(--topbar-fg); font-weight: 700; font-size: 18px; }
.topnav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.topnav > a { color: var(--topbar-fg); }
.topnav .btn { color: var(--fg); }
.inline-form { display: inline; margin: 0; }
.link-button { background: none; border: 0; padding: 0; color: inherit; font: inherit; cursor: pointer; }
.topnav .link-button { color: var(--topbar-fg); }

/* Nút */
.btn {
  display: inline-block; padding: 5px 16px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-subtle); color: var(--fg); font: 500 14px/20px var(--font); cursor: pointer; white-space: nowrap;
}
.btn:hover { background: var(--bg-muted); text-decoration: none; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-small { padding: 3px 12px; font-size: 12px; line-height: 18px; }
.btn-primary { background: var(--success); border-color: var(--success); color: #ffffff; }
.btn-primary:hover { background: var(--success); filter: brightness(1.08); }
.btn-block { display: flex; justify-content: center; width: 100%; }
.btn-danger { color: var(--danger); }
.btn-danger:hover { background: var(--danger); border-color: var(--danger); color: #ffffff; }

/* Thông báo */
.flash { margin: 16px 0; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-subtle); }
.flash-success { border-color: var(--success); }
.flash-error { border-color: var(--danger); color: var(--danger); }
.flash-info { border-color: var(--accent); }

/* Khung */
.card { border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg); margin: 16px 0; overflow: hidden; }
.card-padded { padding: 16px; }
.card-header { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding: 8px 16px; background: var(--bg-subtle); border-bottom: 1px solid var(--border); }
.empty-state { text-align: center; padding: 32px 16px; }
.hero { padding: 32px 0 16px; }
.hero h1 { font-size: 32px; }

/* Form */
.form label { display: block; margin: 0 0 16px; font-weight: 600; }
.form input:not([type]), .form input[type="text"], .form input[type="password"] {
  display: block; width: 100%; margin-top: 4px; padding: 6px 12px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--bg); color: var(--fg); font: 14px/20px var(--font);
}
.form input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.form .hint, .card .hint { display: block; font-weight: 400; font-size: 12px; color: var(--fg-muted); margin-top: 4px; }
.form label.choice { display: flex; align-items: center; gap: 8px; font-weight: 400; margin-bottom: 8px; }
fieldset { border: 0; padding: 0; margin: 0 0 16px; }
legend { font-weight: 600; margin-bottom: 8px; }
details > summary { cursor: pointer; margin-bottom: 8px; }
.form-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
details.help { margin-top: 16px; }

/* Danh sách repo */
.repo-list { list-style: none; padding: 0; }
.repo-list li { padding: 12px 16px; border-top: 1px solid var(--border); }
.repo-list li:first-child { border-top: 0; }
.repo-list p { margin: 4px 0 0; }
.repo-list-title { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.badge { display: inline-block; padding: 0 8px; border: 1px solid var(--border); border-radius: 999px; font-size: 12px; line-height: 20px; color: var(--fg-muted); }
.status { font-size: 12px; font-weight: 600; }
.status-success { color: var(--success); }
.status-failed { color: var(--danger); }
.status-running { color: var(--warning); }
.layout-sidebar { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.activity { list-style: none; padding: 0; margin: 0; }
.activity li { padding: 4px 0; }

/* Header của repo */
.repo-header { margin-top: 16px; border-bottom: 1px solid var(--border); }
.repo-title { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.repo-title h1 { font-size: 20px; font-weight: 400; margin: 8px 0; }
.tabs { display: flex; gap: 4px; overflow-x: auto; margin-top: 8px; }
.tabs a { padding: 8px 12px; color: var(--fg); border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs a:hover { text-decoration: none; background: var(--bg-subtle); }
.tabs a.active { border-bottom-color: #fd8c73; font-weight: 600; }

/* Thanh công cụ, dropdown, breadcrumb */
.toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 16px; }
.dropdown { position: relative; }
.dropdown > summary { list-style: none; margin: 0; }
.dropdown > summary::-webkit-details-marker { display: none; }
.dropdown-menu {
  position: absolute; z-index: 10; top: 32px; left: 0; min-width: 220px; max-height: 320px; overflow-y: auto;
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}
.dropdown-menu a { display: block; padding: 6px 16px; color: var(--fg); }
.dropdown-menu a:hover, .dropdown-menu a.active { background: var(--bg-subtle); text-decoration: none; }
.dropdown-title { padding: 6px 16px; font-size: 12px; font-weight: 600; color: var(--fg-muted); border-bottom: 1px solid var(--border); }
.breadcrumb { font-size: 16px; }
.breadcrumb .sep { color: var(--fg-muted); margin: 0 2px; }
.clone-input { margin-left: auto; width: 320px; max-width: 100%; padding: 3px 8px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-subtle); color: var(--fg); font: 12px var(--mono); }

/* Danh sách file */
.last-commit { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; padding: 12px 16px; background: var(--bg-subtle); border-bottom: 1px solid var(--border); }
.file-table { width: 100%; border-collapse: collapse; }
.file-table td { padding: 8px 16px; border-top: 1px solid var(--border); }
.file-table tr:first-child td { border-top: 0; }
.file-table tr:hover { background: var(--bg-subtle); }
.file-name { display: flex; align-items: center; gap: 8px; word-break: break-all; }
.file-size { text-align: right; white-space: nowrap; width: 1%; }
.icon { width: 16px; height: 16px; flex: none; }
.icon-dir { fill: #54aeff; }
.icon-file { fill: none; stroke: var(--fg-muted); stroke-width: 1.2; }

/* Xem file */
.file-header { justify-content: space-between; }
.file-actions { display: flex; gap: 4px; flex-wrap: wrap; }
.code-view { overflow-x: auto; }
.code-view .highlighttable { border-collapse: collapse; width: 100%; }
.code-view .highlighttable td { padding: 0; vertical-align: top; }
.code-view .linenos { width: 1%; text-align: right; user-select: none; border-right: 1px solid var(--border); }
.code-view .linenos pre, .code-view .code pre { margin: 0; padding: 8px 12px; line-height: 20px; background: transparent; }
.code-view .linenos a { color: var(--fg-muted); }
.code-view .highlight { background: transparent; }
.image-view { padding: 16px; text-align: center; background: var(--bg-subtle); }
.image-view img { max-width: 100%; }
pre.plain, pre.command, pre.log-output, pre.commit-body { margin: 0; padding: 16px; overflow-x: auto; white-space: pre-wrap; word-break: break-word; }
pre.command { background: var(--bg-subtle); border: 1px solid var(--border); border-radius: var(--radius); }

/* README dạng Markdown */
.markdown-body { padding: 16px 32px; overflow-wrap: break-word; }
.markdown-body h1, .markdown-body h2 { padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.markdown-body code { padding: 2px 4px; border-radius: 4px; background: var(--bg-muted); }
.markdown-body pre { padding: 16px; overflow-x: auto; border-radius: var(--radius); background: var(--bg-subtle); }
.markdown-body pre code { padding: 0; background: none; }
.markdown-body table { border-collapse: collapse; display: block; overflow-x: auto; }
.markdown-body th, .markdown-body td { padding: 6px 12px; border: 1px solid var(--border); }
.markdown-body blockquote { margin: 0; padding: 0 16px; color: var(--fg-muted); border-left: 4px solid var(--border); }
.markdown-body img { max-width: 100%; }

/* Commit và diff */
.commit-day { font-size: 14px; color: var(--fg-muted); font-weight: 400; }
.commit-list { list-style: none; padding: 0; }
.commit-list li { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 8px 16px; border-top: 1px solid var(--border); flex-wrap: wrap; }
.commit-list li:first-child { border-top: 0; }
.commit-subject { color: var(--fg); font-weight: 600; }
.commit-actions { display: flex; align-items: center; gap: 8px; }
.pagination { display: flex; gap: 8px; justify-content: center; margin: 16px 0; }
.commit-title { margin-top: 0; }
pre.commit-body { padding: 0 0 8px; }
.text-add { color: var(--success); }
.text-del { color: var(--danger); }
.diff-scroll { overflow-x: auto; }
.diff-table { width: 100%; border-collapse: collapse; font: 12px/20px var(--mono); }
.diff-table td { padding: 0 8px; vertical-align: top; }
.diff-table .ln { width: 1%; min-width: 40px; text-align: right; color: var(--fg-muted); user-select: none; }
.diff-table .code { white-space: pre; }
.diff-add { background: var(--add-bg); }
.diff-del { background: var(--del-bg); }
.diff-hunk { background: var(--hunk-bg); color: var(--fg-muted); }
.diff-note { color: var(--fg-muted); }
.badge.diff-added { color: var(--success); border-color: var(--success); }
.badge.diff-deleted { color: var(--danger); border-color: var(--danger); }

/* Branch, đồng bộ, vùng nguy hiểm */
.ref-list { list-style: none; padding: 0; margin: 0; }
.ref-list li { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; padding: 8px 16px; border-top: 1px solid var(--border); }
.ref-list li:first-child { border-top: 0; }
.sync-log { border-top: 1px solid var(--border); padding: 8px 16px; }
.sync-log:first-child { border-top: 0; }
.sync-log summary { margin: 0; }
pre.log-output { margin-top: 8px; background: var(--bg-subtle); border-radius: var(--radius); }
.danger-zone { border-color: var(--danger); }

/* Điện thoại */
@media (max-width: 760px) {
  .layout-sidebar { grid-template-columns: 1fr; gap: 0; }
  .clone-input { margin-left: 0; width: 100%; }
  .markdown-body { padding: 16px; }
  .hero h1 { font-size: 24px; }
}