/* Shared look for the team tools: cool neutrals, a deep river-teal accent, system CJK faces (no web fonts: works in mainland China). */
:root {
  --bg: #f3f5f7; --surface: #ffffff; --ink: #18222e; --muted: #5a6573; --line: #dde3e9;
  --accent: #0b6b6b; --accent-soft: #e2f1f0; --accent-ink: #ffffff;
  --todo: #6b7480; --todo-bg: #eef1f4;
  --draft: #2c58a8; --draft-bg: #e6edf9;
  --review: #9a5800; --review-bg: #fbf0dc;
  --verified: #1d7440; --verified-bg: #e0f2e7;
  --stale: #b0261c; --stale-bg: #fbe5e2;
  --first: #8a3fb0; --first-bg: #f2e8f8;
  --shadow: 0 1px 2px rgba(20, 34, 48, .06), 0 6px 20px rgba(20, 34, 48, .06);
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) { :root {
  --bg: #11171d; --surface: #182029; --ink: #e6ebf0; --muted: #98a3af; --line: #2a3541;
  --accent: #4fb3b0; --accent-soft: #173535; --accent-ink: #0d1a1a;
  --todo: #a2acb7; --todo-bg: #232c36;
  --draft: #8fb0ef; --draft-bg: #1d2a42;
  --review: #f0b65c; --review-bg: #3a2c14;
  --verified: #7fd19c; --verified-bg: #16301f;
  --stale: #f2918a; --stale-bg: #3a1c19;
  --first: #d3a2ee; --first-bg: #2e2138;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .25);
  color-scheme: dark;
} }
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 14px; line-height: 1.55;
       padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); }
[hidden] { display: none !important; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
a { color: var(--accent); }

.btn { border: 1px solid var(--line); background: var(--surface); padding: 7px 12px; border-radius: 8px; cursor: pointer; font-weight: 600; }
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.good { color: var(--verified); }
.btn.warn { color: var(--stale); }
.btn.link { border: 0; background: none; padding: 0; color: var(--accent); }
.btn:disabled { opacity: .45; cursor: default; }

/* single-card pages: login, invite */
.card-page { min-height: 100%; display: grid; place-items: center; padding-inline: 16px; padding-block: 32px; }
.card { width: 100%; max-width: 380px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow);
        padding: 24px; display: flex; flex-direction: column; gap: 14px; }
.card h1 { margin: 0; font-size: 20px; }
.card p { margin: 0; color: var(--muted); }
.field { display: flex; flex-direction: column; gap: 5px; }
.field label { font-size: 13px; color: var(--muted); }
.field input { padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.msg { font-size: 13px; color: var(--stale); min-height: 1em; }
.msg.ok { color: var(--verified); }