:root {
  --bg: #f6f7f9; --card: #fff; --ink: #1c2530; --muted: #5d6b7a; --line: #dfe4ea;
  --accent: #2456a6; --accent-ink: #fff; --ok: #1c7a46; --warn: #8a5a00; --err: #a02222;
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--ink); }
main { max-width: 880px; margin: 0 auto; padding: 16px; }
footer { max-width: 880px; margin: 0 auto; padding: 8px 16px 32px; color: var(--muted); font-size: 14px; }
a { color: var(--accent); }
h1 { font-size: 26px; margin: 8px 0 12px; } h2 { font-size: 19px; margin: 0 0 10px; } h3 { font-size: 16px; margin: 14px 0 4px; }
.top { background: #fff; border-bottom: 1px solid var(--line); padding: 10px 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; font-size: 18px; }
nav { display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: center; margin-left: auto; }
nav a { text-decoration: none; color: var(--ink); padding: 4px 2px; }
nav a:hover { color: var(--accent); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin: 0 0 14px; }
.narrow { max-width: 460px; margin: 24px auto; }
.muted { color: var(--muted); } .error-text { color: var(--err); font-size: 14px; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
.row > label { flex: 1 1 160px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 14px; color: var(--muted); }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--ink); font-size: 16px; }
input, select, textarea { font: inherit; padding: 9px 10px; border: 1px solid #c3cbd5; border-radius: 8px; background: #fff; color: var(--ink); width: 100%; }
input[type=checkbox] { width: auto; }
textarea { resize: vertical; } .mono { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }
button, .button { font: inherit; padding: 9px 14px; border-radius: 8px; border: 1px solid #c3cbd5; background: #fff; color: var(--ink); cursor: pointer; text-decoration: none; display: inline-block; }
button:hover, .button:hover { border-color: var(--accent); }
button.primary, .button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.small, .button.small { padding: 4px 10px; font-size: 14px; }
button.link { border: 0; background: none; color: var(--accent); padding: 4px 2px; }
button:disabled { opacity: .6; cursor: wait; }
form.inline { display: inline; }
fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; }
legend { font-size: 14px; color: var(--muted); }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
code { background: #eef1f5; padding: 2px 6px; border-radius: 5px; } code.wrap { word-break: break-all; display: inline-block; }
ul.plain { list-style: none; padding: 0; margin: 0; } ul.plain li { padding: 4px 0; }
.flash { padding: 10px 12px; border-radius: 8px; margin: 0 0 12px; border: 1px solid; }
.flash.ok { background: #e8f5ee; border-color: #b9dfc9; color: var(--ok); }
.flash.error { background: #fbeaea; border-color: #efbcbc; color: var(--err); }
.flash.warn { background: #fff4de; border-color: #ecd49b; color: var(--warn); }
.items { list-style: none; padding: 0; margin: 0; }
.item { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.item:last-child { border-bottom: 0; } .item.late .item-title { color: var(--err); }
.item-title { font-weight: 600; text-decoration: none; color: var(--ink); } .item-title:hover { color: var(--accent); }
.item-actions { display: flex; gap: 6px; align-items: center; }
.meta { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; color: var(--muted); font-size: 14px; margin-top: 2px; }
.tag { background: #eef1f5; border-radius: 999px; padding: 1px 9px; font-size: 13px; color: var(--ink); }
.tag.type { background: #e5edf8; } .tag.doing { background: #fff0cc; }
.when { font-weight: 600; color: var(--ink); }
.callout { background: #eef5ff; border-left: 4px solid var(--accent); padding: 10px 12px; border-radius: 6px; }
.actions { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
details summary { cursor: pointer; font-weight: 600; margin-bottom: 8px; }
.chat-log { max-height: 55vh; overflow-y: auto; padding: 4px; display: flex; flex-direction: column; gap: 10px; margin-bottom: 10px; }
.msg { padding: 10px 12px; border-radius: 12px; max-width: 92%; }
.msg.user { background: var(--accent); color: var(--accent-ink); align-self: flex-end; }
.msg.assistant { background: #eef1f5; align-self: flex-start; }
.msg p { margin: 0 0 8px; } .msg p:last-child { margin: 0; } .msg ul { margin: 4px 0 8px 18px; padding: 0; }
.msg .sources { font-size: 13px; color: var(--muted); margin-top: 6px; }
.msg.user .sources { color: #dbe6f7; } .msg.error { background: #fbeaea; color: var(--err); align-self: stretch; }
.chat-form { display: flex; gap: 8px; align-items: flex-end; }
@media (max-width: 600px) { main { padding: 10px; } .item-actions { width: 100%; } }