/* Tandem's look, for apps agents make: link it, and an app reads as part of Tandem.

     <link rel="stylesheet" href="/tandem.css">

   Colors follow Tandem's light and dark theme (the SDK sets data-theme on <html>). Use the
   variables for anything you style yourself, and the few classes below for controls. */

:root {
  --bg: #fdfdfc;
  --card: #ffffff;
  --ink: #000000;
  --muted: #6b6b68;
  --rule: rgba(0, 0, 0, 0.1);
  --soft: #efefec;
  --chip: rgba(0, 0, 0, 0.1);
  --sky: #d6effc;
  --teal: #16c1bb;
  --teal-ink: #0a7f7a;
  --lilac: #c79bd3;
  --lilac-ink: #3b1648;
  --amber: #fbeccd;
  --amber-ink: #6b4500;
  --bad: #b3261e;
  --bad-soft: #fbeae8;
  --ring: 0 0 0 1px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.08);
  --lift: 0 0 0 1px rgba(0, 0, 0, 0.08), 0 8px 24px rgba(0, 0, 0, 0.06);
  --sans: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0c0c0c;
  --card: #171717;
  --ink: #f4f4f1;
  --muted: #9a9a95;
  --rule: rgba(255, 255, 255, 0.12);
  --soft: #1f1f1e;
  --chip: rgba(255, 255, 255, 0.14);
  --sky: #10283a;
  --teal-ink: #4fd8d2;
  --lilac: #3a2145;
  --lilac-ink: #ecd3f3;
  --amber: #3a2a10;
  --amber-ink: #f3cf8a;
  --bad: #ff8a80;
  --bad-soft: #3a1714;
  --ring: 0 0 0 1px rgba(255, 255, 255, 0.12);
  --lift: 0 0 0 1px rgba(255, 255, 255, 0.12), 0 8px 24px rgba(0, 0, 0, 0.5);
  color-scheme: dark;
}

/* The page */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--card);
  color: var(--ink);
  font: 15px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}
h1, h2, h3 { margin: 0; font-weight: 500; letter-spacing: -0.01em; line-height: 1.25; }
h1 { font-size: 20px; }
h2 { font-size: 17px; }
h3 { font-size: 15px; }
p { margin: 0; }
a { color: var(--teal-ink); text-underline-offset: 3px; }
code, kbd, pre { font-family: var(--mono); font-size: 0.9em; }
code { padding: 0 3px; border-radius: 3px; background: var(--soft); }
hr { border: 0; height: 1px; background: var(--rule); margin: 12px 0; }
::selection { background: var(--sky); color: var(--ink); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; border-radius: 4px; }
[hidden] { display: none !important; }

/* Small type: monospace capitals, as on a label. For section labels, counts, statuses. */
.caps {
  font: 12px/1.5 var(--mono);
  letter-spacing: 0.015em;
  text-transform: uppercase;
  color: var(--muted);
}
.muted { color: var(--muted); }

/* Buttons: plain on a card; .solid for the one main action; .danger for what can't be undone. */
button { font: inherit; color: inherit; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 12px;
  border: 0;
  border-radius: 4px;
  background: var(--card);
  color: var(--ink);
  box-shadow: var(--ring);
  font: 12px/1.5 var(--mono);
  letter-spacing: 0.015em;
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 120ms, opacity 120ms;
}
.btn:hover { background: var(--soft); }
.btn:active:not(:disabled) { transform: translateY(0.5px); }
.btn:disabled { opacity: 0.4; cursor: default; }
.btn.solid { background: var(--ink); color: var(--bg); box-shadow: none; }
.btn.solid:hover { opacity: 0.85; }
.btn.danger { color: var(--bad); }
.btn.icon { width: 36px; padding: 0; }
@media (pointer: coarse) { .btn { min-height: 44px; } .btn.icon { width: 44px; } }

/* Fields */
input, textarea, select {
  font: inherit;
  color: inherit;
  width: 100%;
  min-height: 40px;
  padding: 8px 10px;
  border: 0;
  border-radius: 6px;
  background: var(--card);
  box-shadow: var(--ring);
}
input:focus, textarea:focus, select:focus { outline: none; box-shadow: 0 0 0 1px var(--ink), 0 0 0 4px var(--chip); }
input[type="checkbox"], input[type="radio"] { width: 18px; min-height: 18px; padding: 0; box-shadow: none; accent-color: var(--ink); }
label { display: block; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field > span { font: 12px/1.5 var(--mono); letter-spacing: 0.015em; text-transform: uppercase; color: var(--muted); }

/* Surfaces: the app sits on --card; group things on .panel, lift what floats with .card. */
.panel { padding: 12px; border-radius: 8px; background: var(--soft); }
.card { padding: 12px; border-radius: 8px; background: var(--card); box-shadow: var(--ring); }
.list { display: flex; flex-direction: column; }
.list > * { padding: 10px 0; border-top: 1px solid var(--rule); }
.list > *:first-child { border-top: 0; }

/* Tags: where something stands. Pick by meaning, the same way everywhere. */
.tag {
  display: inline-block;
  padding: 0 6px;
  border-radius: 3px;
  background: var(--soft);
  color: var(--ink);
  font: 11px/18px var(--mono);
  letter-spacing: 0.015em;
  text-transform: uppercase;
  white-space: nowrap;
}
.tag.done { background: var(--soft); color: var(--muted); }
.tag.good { background: var(--teal); color: #000; }
.tag.open { background: var(--sky); color: var(--ink); }
.tag.wait { background: var(--amber); color: var(--amber-ink); }
.tag.ask { background: var(--lilac); color: var(--lilac-ink); }
.tag.bad { background: var(--bad-soft); color: var(--bad); }

/* Tables: quiet rules, labels in small capitals; wide ones scroll in their box. */
.scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font: 11.5px/1.5 var(--mono); letter-spacing: 0.015em; text-transform: uppercase; color: var(--muted); font-weight: 400; }
th, td { padding: 8px 10px 8px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }

/* Empty and error states: say what to do next. */
.empty { padding: 24px 12px; text-align: center; color: var(--muted); }
.error { padding: 10px 12px; border-radius: 6px; background: var(--bad-soft); color: var(--bad); }