/* Default = dark. The :root variables below define the dark palette; the
   prefers-color-scheme: light block overrides them when the OS/browser asks
   for light. */
:root {
  --bg: #0e1116;
  --panel: #161b22;
  --panel-2: #1f2630;
  --border: #2a313c;
  --text: #e6edf3;
  --muted: #8b96a3;
  --accent: #2f81f7;
  --accent-hover: #4493f8;
  --danger: #f85149;
  --success: #3fb950;
  --warn: #d29922;
  --code-bg: #0b0f14;
  --row-hover: #1c2330;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fa;
    --panel: #ffffff;
    --panel-2: #eef0f3;
    --border: #d0d7de;
    --text: #1f2328;
    --muted: #57606a;
    --accent: #0969da;
    --accent-hover: #0860c2;
    --danger: #cf222e;
    --success: #1a7f37;
    --warn: #9a6700;
    --code-bg: #f6f8fa;
    --row-hover: #f0f3f6;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  height: 100%;
}

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

code, pre, textarea, .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.muted { color: var(--muted); }

header.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.brand strong { letter-spacing: 0.2px; }
.brand span { margin-left: 8px; }
.nav { display: flex; gap: 12px; align-items: center; }

main { min-height: calc(100vh - 49px); }

.centered { display: flex; align-items: center; justify-content: center; min-height: calc(100vh - 49px); }

.login-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 32px; text-align: center; max-width: 380px;
}
.login-card h1 { margin: 0 0 8px; }

.layout { display: grid; grid-template-columns: 220px 1fr; min-height: calc(100vh - 49px); }
.sidebar { background: var(--panel); border-right: 1px solid var(--border); padding: 12px 0; }
.tabs { display: flex; flex-direction: column; }
.tabs button {
  background: none; border: 0; color: var(--text); text-align: left;
  padding: 10px 16px; cursor: pointer; font-size: 14px;
  border-left: 3px solid transparent;
}
.tabs button:hover { background: var(--panel-2); }
.tabs button.active { background: var(--panel-2); border-left-color: var(--accent); color: #fff; }

.content { padding: 20px 24px; }

.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 16px;
}
.section-head h2 { margin: 0; }

.btn {
  display: inline-block; background: var(--panel-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 6px 12px; cursor: pointer; font: inherit;
}
.btn:hover { background: var(--row-hover); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-hover); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.small { padding: 3px 8px; font-size: 12px; }

table.list {
  width: 100%; border-collapse: collapse; background: var(--panel);
  border: 1px solid var(--border); border-radius: 6px; overflow: hidden;
}
table.list th, table.list td {
  padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.list th { background: var(--panel-2); font-weight: 600; font-size: 12px; text-transform: uppercase; color: var(--muted); }
table.list tr:last-child td { border-bottom: 0; }
table.list tr:hover td { background: var(--row-hover); }

.form { background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: 16px; max-width: 920px; }
.form .row { display: flex; gap: 16px; margin-bottom: 12px; }
.form .row > .field { flex: 1; }
.form label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.4px; }
.form input[type=text], .form input[type=number], .form select, .form textarea {
  width: 100%; background: var(--code-bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 4px; padding: 6px 8px; font: inherit;
}
.form textarea { min-height: 360px; resize: vertical; }
.form .checkbox { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text); text-transform: none; letter-spacing: 0; }
.form .actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 12px; }

select[multiple] { min-height: 140px; }

.edit-link {
  display: inline-block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--accent);
}
.edit-link:hover { color: var(--accent-hover); }

.form-subhead {
  margin: 24px 0 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
}

.pill {
  display: inline-block; padding: 1px 8px; border-radius: 10px;
  background: var(--panel-2); border: 1px solid var(--border); font-size: 11px; color: var(--muted);
}
.pill.ok { color: var(--success); border-color: rgba(63,185,80,0.4); }
.pill.warn { color: var(--warn); border-color: rgba(210,153,34,0.4); }

.flash {
  margin: 0 0 12px; padding: 8px 12px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--panel-2);
}
.flash.error { border-color: var(--danger); color: var(--danger); }
.flash.success { border-color: var(--success); color: var(--success); }

.shell-block {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin-bottom: 12px;
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--border); }
  .tabs { flex-direction: row; flex-wrap: wrap; }
  .shell-block { grid-template-columns: 1fr; }
}