:root {
  --bg: #F7F6F3;
  --surface: #FFFFFF;
  --ink: #1F2328;
  --ink-2: #5A6069;
  --line: #E4E2DC;
  --accent: #1F3864;
  --accent-soft: #EDF1F8;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(20, 24, 33, .07);
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: 'Noto Sans TC', -apple-system, sans-serif;
  font-size: 14px; line-height: 1.6;
}
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 14px; }

/* layout */
.shell { display: flex; min-height: 100vh; }
.side {
  width: 208px; flex-shrink: 0; background: var(--surface);
  border-right: 1px solid var(--line); padding: 20px 14px;
  display: flex; flex-direction: column; gap: 4px; position: sticky; top: 0; height: 100vh;
}
.brand { font-weight: 700; font-size: 17px; color: var(--accent); letter-spacing: .5px; margin: 2px 8px 18px; }
.brand small { display: block; font-weight: 400; font-size: 11px; color: var(--ink-2); }
.nav-item {
  display: block; width: 100%; text-align: left; padding: 9px 12px;
  border: 0; background: none; border-radius: 8px; color: var(--ink-2); font-size: 14px;
}
.nav-item:hover { background: var(--bg); color: var(--ink); }
.nav-item.on { background: var(--accent-soft); color: var(--accent); font-weight: 500; }
.side .spacer { flex: 1; }
.userbox { font-size: 12px; color: var(--ink-2); padding: 8px 12px; border-top: 1px solid var(--line); }
.main { flex: 1; padding: 28px 36px; max-width: 1200px; }

/* header */
.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; gap: 12px; flex-wrap: wrap; }
.page-head h1 { font-size: 20px; margin: 0; font-weight: 700; }

/* buttons */
.btn {
  padding: 8px 16px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); font-size: 13.5px;
}
.btn:hover { border-color: var(--ink-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #2a4a80; }
.btn.small { padding: 4px 10px; font-size: 12.5px; }
.btn.ghost { border: none; background: none; color: var(--accent); }

/* chips */
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  padding: 5px 12px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface); font-size: 12.5px; color: var(--ink-2);
}
.chip.on { background: var(--ink); border-color: var(--ink); color: #fff; }

/* cards */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; box-shadow: var(--shadow); cursor: pointer; transition: border-color .15s;
}
.card:hover { border-color: var(--accent); }
.card .code { font-size: 12px; color: var(--ink-2); letter-spacing: .3px; }
.card h3 { margin: 4px 0 8px; font-size: 15.5px; font-weight: 500; }
.card .meta { display: flex; gap: 8px; align-items: center; font-size: 12px; color: var(--ink-2); }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11.5px; color: #fff; }
.badge.outline { background: none !important; border: 1px solid currentColor; }

/* table */
.tbl { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.tbl th { text-align: left; font-size: 12px; color: var(--ink-2); font-weight: 500; padding: 10px 14px; border-bottom: 1px solid var(--line); background: #FBFAF8; }
.tbl td { padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.tbl tr:last-child td { border-bottom: none; }
.tbl tr:hover td { background: #FBFAF8; }

/* forms */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12.5px; color: var(--ink-2); margin-bottom: 5px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; background: #fff;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* modal */
.overlay { position: fixed; inset: 0; background: rgba(24, 28, 36, .45); display: flex; align-items: center; justify-content: center; z-index: 50; }
.modal { background: var(--surface); border-radius: 14px; padding: 26px 28px; width: 480px; max-width: 92vw; max-height: 88vh; overflow: auto; }
.modal h2 { margin: 0 0 18px; font-size: 17px; }
.modal .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }

/* login */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-card { width: 360px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 36px; box-shadow: var(--shadow); }
.login-card h1 { font-size: 22px; margin: 0 0 4px; color: var(--accent); }
.login-card p { color: var(--ink-2); font-size: 13px; margin: 0 0 24px; }

/* stages */
.stages { display: flex; gap: 0; margin: 18px 0 24px; flex-wrap: wrap; }
.stage { padding: 7px 18px 7px 24px; background: var(--surface); border: 1px solid var(--line); font-size: 12.5px; color: var(--ink-2); position: relative; margin-left: -8px; clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 50%, calc(100% - 10px) 100%, 0 100%, 10px 50%); }
.stage:first-child { margin-left: 0; clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 50%, calc(100% - 10px) 100%, 0 100%); }
.stage.done { background: var(--accent-soft); color: var(--accent); }
.stage.active { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 500; }

.empty { text-align: center; color: var(--ink-2); padding: 60px 0; }
.err { color: #B4552D; font-size: 13px; margin-top: 8px; }
.muted { color: var(--ink-2); font-size: 12.5px; }
.section-title { font-size: 15px; font-weight: 700; margin: 26px 0 12px; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar input[type="search"] { padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; width: 240px; }
.tag { display: inline-block; background: var(--bg); border: 1px solid var(--line); border-radius: 5px; padding: 1px 7px; font-size: 11.5px; color: var(--ink-2); margin-right: 4px; }
a.plain { color: var(--accent); text-decoration: none; }