:root {
  --ink: #17202a;
  --muted: #607080;
  --line: #d9e1e8;
  --bg: #f5f7fa;
  --panel: #ffffff;
  --blue: #1f5f99;
  --green: #2f7d57;
  --red: #b54747;
  --amber: #9a6a1a;
  --shadow: 0 10px 30px rgba(20, 35, 55, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Microsoft JhengHei", "Noto Sans TC", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

button, input, select, textarea {
  font: inherit;
}

#app {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
}

.sidebar {
  background: #10263a;
  color: #fff;
  padding: 22px 16px;
}

.brand {
  display: grid;
  gap: 4px;
  margin-bottom: 24px;
}

.brand strong { font-size: 23px; }
.brand span { color: #b9c7d5; font-size: 14px; }

nav {
  display: grid;
  gap: 7px;
}

.nav {
  width: 100%;
  border: 0;
  border-radius: 6px;
  padding: 11px 12px;
  text-align: left;
  color: #dbe6f0;
  background: transparent;
  cursor: pointer;
}

.nav:hover, .nav.active {
  background: #1f5f99;
  color: #fff;
}

.main {
  padding: 26px;
  min-width: 0;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 18px;
}

h1 {
  margin: 0 0 6px;
  font-size: 30px;
}

h2 {
  font-size: 21px;
  margin: 0 0 14px;
}

h3 {
  font-size: 17px;
  margin: 18px 0 8px;
}

p { margin: 0 0 12px; color: var(--muted); }

.userbox {
  min-width: 180px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px;
  text-align: right;
}

.userbox span { display: block; font-weight: 700; }
.userbox small { color: var(--muted); }

.notice {
  padding: 12px 14px;
  margin-bottom: 14px;
  border: 1px solid #f0d6a4;
  background: #fff7e8;
  border-radius: 6px;
}

.hidden { display: none !important; }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

.kpi {
  display: grid;
  gap: 7px;
}

.kpi strong {
  font-size: 30px;
  color: var(--blue);
}

.toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.button {
  border: 0;
  background: var(--blue);
  color: #fff;
  border-radius: 6px;
  padding: 9px 12px;
  cursor: pointer;
}

.button.secondary {
  background: #e8eef3;
  color: var(--ink);
}

.button.danger { background: var(--red); }

input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 10px;
  background: #fff;
  color: var(--ink);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 14px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 12px;
}

.field-3 { grid-column: span 3; }
.field-4 { grid-column: span 4; }
.field-6 { grid-column: span 6; }
.field-8 { grid-column: span 8; }
.field-12 { grid-column: span 12; }

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  border-bottom: 1px solid var(--line);
  padding: 10px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 13px;
  background: #f4f7fa;
}

.status {
  display: inline-flex;
  padding: 3px 8px;
  border-radius: 999px;
  background: #e8eef3;
  font-size: 13px;
}

.status.high { color: #fff; background: var(--red); }
.status.mid { color: #fff; background: var(--amber); }
.status.done { color: #fff; background: var(--green); }

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.tab {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  padding: 8px 10px;
  cursor: pointer;
}

.tab.active {
  border-color: var(--blue);
  color: var(--blue);
  font-weight: 700;
}

pre {
  white-space: pre-wrap;
  overflow: auto;
  padding: 14px;
  background: #10263a;
  color: #eef6ff;
  border-radius: 6px;
  min-height: 160px;
}

@media (max-width: 960px) {
  #app { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .span-3, .span-4, .span-5, .span-6, .span-7, .span-8 { grid-column: span 12; }
  .field-3, .field-4, .field-6, .field-8 { grid-column: span 12; }
  .topbar { display: grid; }
  .userbox { text-align: left; }
}