:root {
  --bg: #f6f7f9; --surface: #ffffff; --border: #e3e6eb; --text: #1c2330; --muted: #6b7484;
  --accent: #2f6fed; --accent-text: #ffffff; --danger: #c53b3b; --ok: #1f8a4c; --warn: #b7791f;
  --hi: #1f8a4c; --mid: #b7791f; --lo: #8a94a6; --code: #f0f2f5;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12151b; --surface: #1a1e26; --border: #2a303b; --text: #e6e9ef; --muted: #8d96a7;
    --accent: #5b8cff; --accent-text: #0b0e13; --danger: #f07070; --ok: #4cc27f; --warn: #e0a84a;
    --hi: #4cc27f; --mid: #e0a84a; --lo: #6b7484; --code: #222833;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #12151b; --surface: #1a1e26; --border: #2a303b; --text: #e6e9ef; --muted: #8d96a7;
  --accent: #5b8cff; --accent-text: #0b0e13; --danger: #f07070; --ok: #4cc27f; --warn: #e0a84a;
  --hi: #4cc27f; --mid: #e0a84a; --lo: #6b7484; --code: #222833;
  color-scheme: dark;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
main { max-width: 1280px; margin: 0 auto; padding: 20px 16px 60px; }
h1 { font-size: 1.5rem; margin: 6px 0 16px; }
h2 { font-size: 1.05rem; margin: 0 0 8px; }
.muted { color: var(--muted); }
.small { font-size: .82rem; }
.strong { font-weight: 600; }
.tiny { width: 4.5em !important; display: inline-block; }

.topbar { display: flex; align-items: center; gap: 20px; padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--text); }
.topbar nav { display: flex; gap: 14px; flex: 1; flex-wrap: wrap; }
.topbar nav a { color: var(--text); }
.logout { display: flex; align-items: center; gap: 10px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.stack { display: flex; flex-direction: column; gap: 14px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.grow { flex: 1; min-width: 200px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px 16px; align-items: end; }
.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px 16px; align-items: end; }

label { display: flex; flex-direction: column; gap: 4px; font-weight: 500; }
label.check { flex-direction: row; align-items: center; gap: 8px; font-weight: 400; flex-wrap: wrap; }
input, select, textarea { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 7px; padding: 8px 10px; width: 100%; }
input[type="checkbox"], input[type="radio"] { width: auto; }
textarea { resize: vertical; }
fieldset { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin: 0; display: flex; flex-direction: column; gap: 8px; }
legend { padding: 0 6px; font-weight: 600; }
[hidden] { display: none !important; }

button, .button { font: inherit; border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: 7px; padding: 7px 12px; cursor: pointer; display: inline-block; }
button:hover, .button:hover { border-color: var(--accent); text-decoration: none; }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }
button.big { padding: 11px 20px; font-size: 1rem; align-self: flex-start; }
button.danger { color: var(--danger); }
button.link { border: none; background: none; color: var(--accent); padding: 0; }
button.small { padding: 3px 8px; font-size: .8rem; }

.seg { display: flex; gap: 18px; flex-wrap: wrap; }
.seg label { flex-direction: row; gap: 6px; align-items: center; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { flex-direction: row; align-items: center; gap: 6px; border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; font-weight: 400; }
.off { opacity: .55; }
.tag { font-size: .72rem; font-weight: 600; background: var(--code); color: var(--muted); border-radius: 5px; padding: 1px 6px; vertical-align: middle; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; border: 1px solid var(--border); background: var(--surface); }
.flash.ok { border-color: var(--ok); }
.flash.error { border-color: var(--danger); color: var(--danger); }
.error-text { color: var(--danger); }

.badge { display: inline-block; font-size: .75rem; font-weight: 600; border-radius: 999px; padding: 2px 9px; background: var(--code); color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
.badge.done { color: var(--ok); }
.badge.error { color: var(--danger); }
.badge.running, .badge.queued { color: var(--warn); }
.status { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.log { list-style: none; margin: 0; padding: 0; width: 100%; display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .85rem; }
.log .ok::before { content: "✓ "; color: var(--ok); }
.log .err { color: var(--danger); }
.log .err::before { content: "✗ "; }

.filter { max-width: 320px; margin-bottom: 8px; }
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); white-space: nowrap; }
th[data-sort] { cursor: pointer; }
tr:last-child td { border-bottom: none; }
td.reason { max-width: 280px; }
td.actions { white-space: nowrap; }
td.actions button + button { margin-left: 4px; }
.links { overflow-wrap: anywhere; }
.score { display: inline-block; min-width: 2.2em; text-align: center; font-weight: 700; border-radius: 6px; padding: 2px 4px; background: var(--code); color: var(--lo); }
.score.hi { color: var(--hi); }
.score.mid { color: var(--mid); }

.provider { border-top: 1px solid var(--border); padding: 12px 0; }
.provider-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }

.login-card { max-width: 360px; margin: 10vh auto 0; }
.login-card h1 { text-align: center; }

dialog { border: 1px solid var(--border); border-radius: 12px; background: var(--surface); color: var(--text); width: min(640px, calc(100vw - 32px)); padding: 16px; }
dialog::backdrop { background: rgba(0, 0, 0, .45); }
.modal-head { display: flex; justify-content: space-between; align-items: center; }
.modal-head h3 { margin: 0; }
pre.draft { white-space: pre-wrap; background: var(--code); padding: 12px; border-radius: 8px; font: .92rem/1.5 system-ui, sans-serif; }
ul.plain { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 6px; }

/* tabs */
.tabs { display: flex; gap: 6px; align-items: flex-end; border-bottom: 1px solid var(--border); margin-bottom: 16px; flex-wrap: wrap; }
.tab { padding: 9px 14px; border: 1px solid transparent; border-bottom: none; border-radius: 9px 9px 0 0; color: var(--text); font-weight: 600; }
.tab-sub { display: block; font-size: .74rem; font-weight: 400; color: var(--muted); }
.tab.active { background: var(--surface); border-color: var(--border); margin-bottom: -1px; }
.tab:hover { text-decoration: none; background: var(--surface); }
.tab-help { margin-left: auto; padding: 9px 4px; font-size: .9rem; }

/* step-by-step picker */
.step { display: inline-grid; place-items: center; width: 1.6em; height: 1.6em; border-radius: 50%; background: var(--accent); color: var(--accent-text); font-size: .85rem; margin-right: 6px; }
.chip-btn { border-radius: 999px; padding: 7px 14px; }
.chip-btn.on { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.pick { margin: 6px 0 10px; }
.card.highlight { border-color: var(--accent); }
#pk-prompt { font: .85rem/1.45 ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--code); }
.offscreen { position: fixed; left: -9999px; opacity: 0; }

/* guide */
.welcome { border-color: var(--accent); }
.ways { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 14px; }
.way { border: 1px solid var(--border); border-radius: 10px; padding: 14px; position: relative; }
.way h3 { margin: 4px 0 6px; font-size: 1rem; }
.way ol, .way ul { padding-left: 1.2em; margin: 8px 0; }
.way li { margin: 4px 0; }
.way-num { width: 2em; height: 2em; border-radius: 50%; display: grid; place-items: center; background: var(--accent); color: var(--accent-text); font-weight: 700; }
.tag.good { color: var(--ok); }
.defs { padding-left: 1.2em; }
.defs li { margin: 6px 0; }
.center { text-align: center; }

/* agent chat */
.chat-log { max-height: 460px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; padding: 4px 2px 10px; }
.msg { border-radius: 10px; padding: 9px 12px; max-width: 88%; white-space: pre-wrap; overflow-wrap: anywhere; }
.msg .who { font-size: .72rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; margin-bottom: 2px; }
.msg.user { align-self: flex-end; background: var(--accent); color: var(--accent-text); }
.msg.user .who { color: inherit; opacity: .8; }
.msg.assistant { align-self: flex-start; background: var(--code); }
.msg.error { align-self: flex-start; border: 1px solid var(--danger); color: var(--danger); }
.msg.step { align-self: flex-start; padding: 1px 12px; font-size: .82rem; color: var(--muted); background: none; }
.msg.thinking { align-self: flex-start; font-size: .85rem; background: none; color: var(--warn); }
.chat-input textarea { min-height: 2.6em; }

@media (max-width: 640px) {
  .topbar { gap: 10px; }
  h1 { font-size: 1.25rem; }
}