:root {
    --bg: #0d1117;
    --bg-elev: #161b22;
    --bg-elev-2: #1c2230;
    --border: #2a3140;
    --text: #e6edf3;
    --text-muted: #8b949e;
    --accent: #6ea8ff;
    --accent-hover: #8cbcff;
    --success: #2ea043;
    --danger: #f85149;
    --warning: #d29922;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

.site-header {
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 18px;
    color: var(--text);
}
.brand:hover { text-decoration: none; }
.brand-logo { color: var(--accent); font-size: 22px; }
.nav-links { display: flex; gap: 18px; align-items: center; }
.nav-links a { color: var(--text-muted); font-size: 14px; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

.main { padding: 30px 20px 60px; min-height: calc(100vh - 60px - 60px); }

.site-footer {
    background: var(--bg-elev);
    border-top: 1px solid var(--border);
    padding: 18px 0;
    color: var(--text-muted);
    font-size: 13px;
}
.site-footer .container { display: flex; justify-content: space-between; }

h1, h2, h3 { line-height: 1.25; margin: 0 0 16px; }
h1 { font-size: 28px; }
h2 { font-size: 22px; }
h3 { font-size: 17px; }
.muted { color: var(--text-muted); }

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 12px;
    flex-wrap: wrap;
}
.page-header h1 { margin: 0; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 14px;
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: background .15s, border-color .15s, color .15s;
}
.btn:hover { background: var(--accent-hover); color: #fff; text-decoration: none; }
.btn-ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-elev-2); color: var(--text); }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: #ff6a64; }
.btn-success { background: var(--success); border-color: var(--success); }
.btn-success:hover { background: #3cc154; }
.btn-sm { padding: 5px 10px; font-size: 13px; }

/* Cards */
.card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow);
}
.card-hover:hover { border-color: var(--accent); }

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}
.project-card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    transition: border-color .15s, transform .15s;
    color: var(--text);
    display: block;
}
.project-card:hover {
    border-color: var(--accent);
    text-decoration: none;
    color: var(--text);
    transform: translateY(-1px);
}
.project-card h3 { margin: 0 0 6px; }
.project-card .meta { color: var(--text-muted); font-size: 13px; }
.project-card .desc {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Forms */
.form { display: flex; flex-direction: column; gap: 14px; max-width: 560px; }
.form-wide { max-width: 100%; }
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-row label { font-size: 13px; color: var(--text-muted); font-weight: 500; }
.form-row input[type=text],
.form-row input[type=password],
.form-row input[type=email],
.form-row input[type=file],
.form-row select,
.form-row textarea {
    width: 100%;
    padding: 9px 12px;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 14px;
}
.form-row textarea { min-height: 120px; resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--accent);
}
.form-row .help { font-size: 12px; color: var(--text-muted); }
.form-actions { display: flex; gap: 10px; align-items: center; margin-top: 6px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }

/* Flash */
.flashes { margin-bottom: 20px; }
.flash {
    padding: 10px 14px;
    border-radius: var(--radius);
    margin-bottom: 8px;
    border: 1px solid var(--border);
}
.flash-success { background: rgba(46,160,67,.15); border-color: var(--success); color: #b6f0c2; }
.flash-error   { background: rgba(248,81,73,.15); border-color: var(--danger); color: #ffc4c1; }
.flash-info    { background: rgba(110,168,255,.12); border-color: var(--accent); color: #bdd5ff; }

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.table th, .table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    vertical-align: middle;
}
.table th { background: var(--bg-elev-2); color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.table tr:last-child td { border-bottom: none; }
.table .actions { white-space: nowrap; }

/* Version block */
.version-card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 18px;
    overflow: hidden;
}
.version-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    background: var(--bg-elev-2);
    border-bottom: 1px solid var(--border);
    gap: 12px;
    flex-wrap: wrap;
}
.version-header h3 { margin: 0; display: flex; align-items: center; gap: 10px; }
.version-tag {
    display: inline-block;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-weight: 700;
    color: var(--accent);
}
.badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .04em;
    border-radius: 999px;
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.badge-pre { color: var(--warning); border-color: var(--warning); }
.badge-latest { color: var(--success); border-color: var(--success); }

.version-body { padding: 14px 18px; }
.version-notes { color: var(--text-muted); margin-bottom: 14px; }
.version-notes pre { background: var(--bg); padding: 10px; border-radius: 6px; overflow-x: auto; }
.version-notes code { background: var(--bg); padding: 1px 5px; border-radius: 4px; font-size: 13px; }

.file-list { display: grid; gap: 8px; }
.file-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    gap: 12px;
    flex-wrap: wrap;
}
.file-info { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; }
.file-os { font-size: 18px; }
.file-name { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-meta { color: var(--text-muted); font-size: 12px; }

/* Admin layout */
.admin-shell { display: grid; grid-template-columns: 220px 1fr; gap: 24px; }
.admin-sidebar {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    height: fit-content;
    position: sticky;
    top: 80px;
}
.admin-sidebar h4 { font-size: 12px; text-transform: uppercase; color: var(--text-muted); margin: 0 0 8px; letter-spacing: .04em; }
.admin-sidebar a { display: block; padding: 6px 10px; border-radius: 6px; color: var(--text); font-size: 14px; }
.admin-sidebar a:hover { background: var(--bg-elev-2); text-decoration: none; }
.admin-sidebar a.active { background: var(--accent); color: #fff; }

.empty {
    padding: 40px 20px;
    text-align: center;
    color: var(--text-muted);
    background: var(--bg-elev);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
}

.auth-page { max-width: 380px; margin: 60px auto; }
.auth-page .card { padding: 28px; }
.auth-page h1 { font-size: 22px; margin-bottom: 6px; }
.auth-page .sub { color: var(--text-muted); margin-bottom: 22px; font-size: 14px; }

@media (max-width: 760px) {
    .admin-shell { grid-template-columns: 1fr; }
    .admin-sidebar { position: static; }
    .nav-links a { font-size: 13px; }
    .nav { gap: 10px; flex-wrap: wrap; height: auto; padding: 12px 0; }
}