:root {
  --bg: #f8fafc;
  --panel: #ffffff;
  --panel-2: #f1f5f9;
  --line: #e2e8f0;
  --muted: #64748b;
  --text: #1f2937;
  --accent: #0ea5e9;
  --accent-hover: #0284c7;
  --good: #16a34a;
  --warn: #d97706;
  --bad: #dc2626;
  --shadow: 0 4px 16px rgba(15, 23, 42, .06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Noto Sans TC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* === login === */
.login-bg {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, #e0f2fe, #f8fafc 60%);
  padding: 24px;
}
.login-box {
  width: 100%;
  max-width: 360px;
  background: var(--panel);
  padding: 32px 28px;
  border-radius: 14px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.login-box h1 { margin: 0 0 4px; font-size: 22px; color: var(--text); }
.login-box .muted { color: var(--muted); margin: 0 0 18px; }
.login-box form { display: flex; flex-direction: column; gap: 10px; }
.login-box input[type="password"] {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 16px;
}
.login-box input[type="password"]:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.login-box button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px;
  font-size: 16px;
  font-weight: 600;
}
.login-box button:hover { background: var(--accent-hover); }
.login-box .error { color: var(--bad); min-height: 18px; font-size: 13px; }

/* === app shell === */
.app {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 220px 1fr;
  transition: grid-template-columns .18s ease;
}
.app.sidebar-collapsed { grid-template-columns: 0 1fr; }
.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow: hidden;
  transition: padding .18s ease;
}
.app.sidebar-collapsed .sidebar { padding: 0; border-right: 0; }
.sidebar h1 { font-size: 18px; margin: 0 6px 18px; color: var(--text); }
.sidebar a {
  display: block;
  padding: 10px 12px;
  color: var(--text);
  text-decoration: none;
  border-radius: 8px;
  font-size: 14px;
}
.sidebar a:hover { background: var(--panel-2); }
.sidebar a.active { background: var(--accent); color: #fff; font-weight: 600; }
.sidebar .spacer { flex: 1; }
.sidebar .logout {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 8px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
}
.sidebar .logout:hover { background: var(--panel-2); }

.main {
  padding: 24px 28px 80px;
  overflow-x: auto;
  background: var(--bg);
  min-width: 0;
  transition: padding-left .18s ease;
}
.app.sidebar-collapsed .main { padding-left: 64px; }

/* sidebar toggle button */
.sidebar-toggle {
  position: fixed;
  top: 16px;
  left: 14px;
  z-index: 30;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  cursor: pointer;
  font-size: 18px;
  color: var(--text);
  box-shadow: var(--shadow);
}
.sidebar-toggle:hover { background: var(--panel-2); }
.app:not(.sidebar-collapsed) .sidebar-toggle { left: 178px; }
@media (max-width: 720px) {
  .app:not(.sidebar-collapsed) .sidebar-toggle { left: 14px; }
}
.toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.toolbar select, .toolbar input, .toolbar button {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 14px;
  cursor: pointer;
}
.toolbar button:hover { background: var(--panel-2); }
.toolbar button.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  font-weight: 600;
}
.toolbar button.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.toolbar .grow { flex: 1; }

.tab-title {
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 4px;
}
.tab-sub {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 18px;
}

/* === panel === */
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}
.panel > .tbl-wrap {
  border: 0;
  border-radius: 0;
  overflow-x: auto;
}
.panel-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}
.panel-head h3 {
  margin: 0;
  font-size: 16px;
  color: var(--text);
  font-weight: 600;
}
.panel-head .panel-sub {
  color: var(--muted);
  font-size: 13px;
}
.panel .tbl-wrap { border: 0; border-radius: 0; }

/* === table === */
.tbl-wrap {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow-x: auto;
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
}
table.t {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 900px;
}
table.t th, table.t td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  text-align: right;
  white-space: nowrap;
}
table.t th:last-child, table.t td:last-child { border-right: 0; }
table.t th {
  background: var(--panel-2);
  color: var(--muted);
  font-weight: 500;
  position: sticky;
  top: 0;
  z-index: 1;
}
table.t th.th-rename { cursor: grab; }
table.t th.th-rename:hover { background: #dbeafe; color: var(--accent); }
table.t th.th-rename.dragging { opacity: .35; cursor: grabbing; }
table.t th.th-rename.drop-target {
  background: #bae6fd;
  box-shadow: inset 3px 0 0 var(--accent);
}
table.t td.l, table.t th.l { text-align: left; }
table.t th.l:first-child, table.t td.l:first-child {
  position: sticky;
  left: 0;
  background: var(--panel);
  z-index: 2;
  box-shadow: 1px 0 0 var(--line);
}
table.t th.l:first-child { background: var(--panel-2); z-index: 3; }
table.t tr.summary td.l:first-child { background: var(--panel-2); }
table.t tr.mini-sum td.l:first-child { background: #eff6ff; }
table.t tr.summary td {
  background: var(--panel-2);
  font-weight: 600;
  border-top: 2px solid var(--line);
}
table.t tr.summary td.pct {
  color: var(--muted);
  font-weight: 400;
  font-size: 12px;
}
table.t td.side-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}
table.t tr.mini-sum td {
  background: #eff6ff;
  border-bottom: 2px solid var(--line);
  font-weight: 600;
  color: var(--text);
}
table.t tr.mini-sum td.side-label { color: var(--accent); }
table.t tr:hover td { background: #f0f9ff; }
table.t tr.mini-sum:hover td { background: #dbeafe; }
table.t .row-action {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 12px;
}
table.t .pos { color: var(--good); }
table.t .neg { color: var(--bad); }

/* === modal === */
.modal-bg {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.55);
  display: none;
  z-index: 50;
}
.modal-bg.show { display: grid; place-items: center; }
.modal {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px 24px;
  width: min(720px, 92vw);
  max-height: 90vh;
  overflow: auto;
  box-shadow: var(--shadow);
}
.modal h3 { margin: 0 0 14px; }
.modal .grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 14px;
}
.modal .grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.modal .field {
  display: flex; flex-direction: column; gap: 4px;
}
.modal label {
  font-size: 12px; color: var(--muted);
}
.modal input[type="number"], .modal input[type="text"], .modal textarea, .modal select {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 14px;
  width: 100%;
}
.modal input:focus, .modal textarea:focus, .modal select:focus {
  outline: 2px solid var(--accent); outline-offset: -1px;
}
.modal .actions {
  display: flex; justify-content: flex-end; gap: 10px;
  margin-top: 18px;
}
.modal .actions button {
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 14px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  cursor: pointer;
}
.modal .actions button:hover { background: var(--panel-2); }
.modal .actions button.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  font-weight: 600;
}
.modal .actions button.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.modal .actions button.danger {
  background: transparent;
  color: var(--bad);
  border-color: var(--bad);
}
.modal .section-title {
  margin: 18px 0 8px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}

/* === cards === */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
}
.card .label { color: var(--muted); font-size: 12px; }
.card .value { font-size: 24px; font-weight: 600; margin-top: 4px; }
.card .sub { color: var(--muted); font-size: 12px; margin-top: 6px; }
.card .progress {
  background: var(--panel-2);
  height: 6px; border-radius: 3px;
  margin-top: 10px;
  overflow: hidden;
}
.card .progress > div {
  background: var(--accent);
  height: 100%;
}

.bonus-row {
  display: flex; gap: 8px; align-items: center; margin: 8px 0;
}
.bonus-row label { width: 100px; color: var(--muted); }
.bonus-row input { flex: 1; }

@media (max-width: 720px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; padding: 10px; overflow-x: auto; }
  .sidebar h1 { display: none; }
  .sidebar .spacer { display: none; }
  .modal .grid { grid-template-columns: 1fr; }
  .main { padding: 16px; }
}