:root {
  --bg: #f5f4f0;
  --surface: #ffffff;
  --ink: #1d2327;
  --muted: #6b7378;
  --line: #e2e0d9;
  --accent: #1f5f5b;
  --accent-ink: #ffffff;
  --accent-soft: #e3efed;
  --warn: #9a5b00;
  --warn-soft: #fbefd9;
  --danger: #a3272f;
  --danger-soft: #f8e1e2;
  --ok: #26703a;
  --ok-soft: #e1f1e4;
  --radius: 8px;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181a;
    --surface: #1d2124;
    --ink: #e7e9ea;
    --muted: #9aa3a8;
    --line: #2f3539;
    --accent: #5fb3aa;
    --accent-ink: #0d1f1d;
    --accent-soft: #1d3331;
    --warn: #e7b25c;
    --warn-soft: #3a2e17;
    --danger: #ef8a90;
    --danger-soft: #3b1f22;
    --ok: #7fcf92;
    --ok-soft: #1c3322;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); }
h1 { font-size: 1.6rem; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: 1.05rem; margin: 0 0 0.75rem; display: flex; align-items: center; gap: 0.5rem; }
h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); margin: 1.25rem 0 0.5rem; }
code, .mono { font-family: var(--mono); font-size: 0.9em; }
pre { margin: 0; }

.wrap { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
main.wrap { padding-top: 24px; padding-bottom: 64px; }

/* Top bar */
.topbar { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.topbar-inner { display: flex; align-items: center; gap: 24px; height: 56px; }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 8px; }
.brand-mark { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 6px; background: var(--accent); color: var(--accent-ink); }
.nav { display: flex; align-items: center; gap: 4px; overflow-x: auto; }
.nav-link { padding: 6px 10px; border-radius: 6px; color: var(--muted); text-decoration: none; white-space: nowrap; }
.nav-link:hover { color: var(--ink); background: var(--bg); }
.nav-link.active { color: var(--ink); background: var(--accent-soft); font-weight: 600; }
.nav-sep { margin-left: 16px; padding-left: 16px; border-left: 1px solid var(--line); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }

/* Page header */
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.head-actions { display: flex; gap: 8px; }
.back { font-size: 0.85rem; text-decoration: none; color: var(--muted); }
.lead { color: var(--muted); max-width: 80ch; margin: -4px 0 20px; }

/* Cards & layout */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.card-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; }
.card-head h2 { margin: 0; }
.stack { display: grid; gap: 16px; align-content: start; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.split-wide { grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: 120px repeat(3, auto); gap: 16px; align-items: end; justify-content: start; }
@media (max-width: 900px) {
  .split, .split-wide, .grid-2, .grid-4 { grid-template-columns: 1fr; }
}

/* Forms */
.form { display: grid; gap: 16px; }
.form h2 { margin-top: 8px; padding-top: 16px; border-top: 1px solid var(--line); }
.form h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.field { display: grid; gap: 4px; }
label { font-weight: 600; font-size: 0.9rem; }
input[type=text], input[type=number], input[type=password], input[type=email], textarea, select {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
}
textarea { resize: vertical; line-height: 1.5; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
.check { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px; font-weight: 600; }
.check input { margin: 0; }
.check .hint { flex-basis: 100%; padding-left: 22px; }
.hint { font-size: 0.82rem; color: var(--muted); font-weight: 400; margin: 0; }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 4px; }
.prompt-editor { font-size: 0.85rem; min-height: 420px; }
textarea.reply { min-height: 320px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  font: inherit; font-weight: 600; font-size: 0.9rem;
  padding: 7px 14px; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink); text-decoration: none;
}
.btn:hover { border-color: var(--muted); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); border-color: var(--accent); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn-danger-ghost { background: transparent; color: var(--danger); border-color: transparent; }
.btn-danger-ghost:hover { background: var(--danger-soft); border-color: transparent; }
.btn-small { padding: 3px 10px; font-size: 0.82rem; }
.btn[disabled] { opacity: 0.6; cursor: wait; }
form.button_to { display: inline; }

/* Flash */
.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; }
.flash ul { margin: 4px 0 0; padding-left: 20px; }
.flash-notice { background: var(--ok-soft); color: var(--ok); }
.flash-alert { background: var(--danger-soft); color: var(--danger); }

/* Tables */
.table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.table th { text-align: left; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); font-weight: 600; padding: 10px 12px; border-bottom: 1px solid var(--line); background: var(--bg); }
.table td { padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table tr:last-child td { border-bottom: 0; }
.table tr.inactive td { opacity: 0.55; }
.row-title { font-weight: 600; text-decoration: none; color: var(--ink); }
.row-title:hover { color: var(--accent); }
.filters { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.filters select { width: auto; min-width: 160px; }

/* Badges & meters */
.badge { display: inline-block; font-size: 0.75rem; font-weight: 600; padding: 2px 8px; border-radius: 999px; background: var(--bg); color: var(--muted); border: 1px solid var(--line); text-decoration: none; white-space: nowrap; }
.badge-category { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.badge-warn, .badge-pending { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge-processing { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.badge-done, .review-approved { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.badge-failed, .review-rejected { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.review-edited { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.meter { display: inline-flex; align-items: center; gap: 6px; }
.meter-bar { width: 60px; height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; display: inline-block; }
.meter-bar span { display: block; height: 100%; background: var(--ok); }
.meter-mid .meter-bar span { background: var(--warn); }
.meter-low .meter-bar span { background: var(--danger); }
.meter-label { font-size: 0.82rem; font-variant-numeric: tabular-nums; }

/* Detail views */
.meta { display: grid; grid-template-columns: 110px 1fr; gap: 6px 12px; margin: 0 0 16px; }
.meta dt { color: var(--muted); font-size: 0.85rem; }
.meta dd { margin: 0; }
.email-body, .prompt, .template-body {
  white-space: pre-wrap; word-wrap: break-word;
  font-family: var(--mono); font-size: 0.84rem; line-height: 1.55;
  background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 12px;
}
.email-body { font-family: inherit; font-size: 0.95rem; max-height: 70vh; overflow: auto; }
.prompt { max-height: 420px; overflow: auto; }
.details summary { cursor: pointer; font-weight: 600; }
.inline-details { font-size: 0.85rem; }
.inline-details summary { cursor: pointer; color: var(--muted); }
.working { display: flex; align-items: center; gap: 10px; color: var(--muted); padding: 8px 0 16px; }
.spinner { width: 16px; height: 16px; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.template { border-top: 1px solid var(--line); padding: 14px 0; }
.template:first-of-type { border-top: 0; padding-top: 0; }
.template header { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.template.inactive { opacity: 0.55; }
.examples { margin: 0 0 16px; padding-left: 20px; }
.list { margin: 0; padding-left: 18px; display: grid; gap: 4px; }
.vars { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
.vars td { padding: 6px 8px 6px 0; border-bottom: 1px solid var(--line); vertical-align: top; }

/* Prompt pipeline overview */
.pipeline { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .pipeline { grid-template-columns: 1fr; } }
.pipeline-step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; display: grid; gap: 10px; align-content: start; }
.step-num { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-weight: 700; }
.prompt-card { display: grid; gap: 4px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 6px; text-decoration: none; color: var(--ink); }
.prompt-card:hover { border-color: var(--accent); }

/* Misc */
.empty { text-align: center; padding: 48px 20px; background: var(--surface); border: 1px dashed var(--line); border-radius: var(--radius); color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 0.82rem; }
.nowrap { white-space: nowrap; }
.right { text-align: right; }
.prewrap { white-space: pre-wrap; }
.spacer { flex: 1; }

/* Feedback */
.form.compact { gap: 8px; margin-top: 10px; }
.feedback-box { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 12px; }
.feedback-box summary { cursor: pointer; font-weight: 600; }
.steps { padding-left: 20px; display: grid; gap: 10px; }
.steps li::marker { font-weight: 700; color: var(--accent); }

/* Sign-in */
.user-menu { margin-left: auto; display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.user-name { font-size: 0.85rem; color: var(--muted); max-width: 220px; overflow: hidden; text-overflow: ellipsis; }
.login { display: grid; place-items: center; padding: 48px 0; }
.login-card { width: 100%; max-width: 400px; display: grid; gap: 16px; }
.login-card h1 { font-size: 1.4rem; }
.login-card p { margin: 0; }
.login-card form.button_to { display: block; }
.btn-microsoft { width: 100%; justify-content: center; padding: 10px 14px; background: var(--surface); border-color: var(--muted); }
.login-card .form .btn { width: 100%; justify-content: center; }
.or { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 0.8rem; }
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.login-fallback summary { cursor: pointer; color: var(--muted); font-size: 0.9rem; margin-bottom: 12px; }

/* Settings: two model columns */
.model-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
@media (max-width: 900px) { .model-grid { grid-template-columns: 1fr; } }
.model-grid h2 .step-num { width: 24px; height: 24px; font-size: 0.8rem; }