:root {
  --orange-500: #F97316; --orange-600: #EA580C; --orange-50: #FFF7ED; --orange-100: #FFEDD5;
  --green-500: #10B981; --green-600: #059669; --green-50: #ECFDF5;
  --gray-50: #FAFAFA; --gray-100: #F4F4F5; --gray-200: #E5E7EB;
  --gray-300: #D1D5DB; --gray-500: #6B7280; --gray-700: #374151; --gray-900: #111827;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Noto Sans TC', -apple-system, sans-serif;
  color: var(--gray-900); background: var(--gray-50);
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font-family: inherit; font-size: 14px; }
a { color: var(--orange-600); text-decoration: none; }
.brand-dot {
  width: 28px; height: 28px;
  background: linear-gradient(135deg, var(--orange-500), var(--green-500));
  border-radius: 8px;
  display: inline-grid; place-items: center;
  color: white; font-weight: 800; font-size: 12px;
  vertical-align: middle;
}

/* ===== Login ===== */
.login-page {
  min-height: 100vh;
  display: grid; place-items: center;
  background:
    radial-gradient(ellipse at 80% 0%, #FFF7ED 0%, transparent 50%),
    radial-gradient(ellipse at 0% 80%, #ECFDF5 0%, transparent 50%),
    white;
}
.login-card {
  width: min(420px, 92vw);
  background: white; border-radius: 20px; padding: 40px 32px;
  box-shadow: 0 12px 32px rgba(0,0,0,.08);
  border: 1px solid var(--gray-200);
}
.login-brand { text-align: center; margin-bottom: 28px; }
.login-brand h1 { margin-top: 12px; font-size: 22px; }
.login-brand p { color: var(--gray-500); font-size: 13px; }
.login-form { display: flex; flex-direction: column; gap: 14px; }
.login-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--gray-700); font-weight: 600; }
.login-form input {
  padding: 10px 12px; border: 1.5px solid var(--gray-200); border-radius: 10px;
  outline: none; transition: border-color .15s;
}
.login-form input:focus { border-color: var(--orange-500); }
.login-hint { text-align: center; color: var(--gray-500); font-size: 12px; margin-top: 16px; }
.err { color: #DC2626; font-size: 13px; text-align: center; min-height: 1em; }

/* ===== Buttons ===== */
.btn {
  padding: 10px 18px; border: 0; border-radius: 10px;
  font-weight: 600; cursor: pointer; transition: all .15s;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary { background: linear-gradient(135deg, var(--orange-500), var(--orange-600)); color: white; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(249,115,22,.25); }
.btn-ghost { background: white; color: var(--gray-700); border: 1.5px solid var(--gray-300); }
.btn-ghost:hover { border-color: var(--orange-500); color: var(--orange-600); }
.btn-danger { background: #FEE2E2; color: #B91C1C; }
.btn-danger:hover { background: #FECACA; }
.btn-sm { padding: 6px 12px; font-size: 13px; }

/* ===== Admin layout ===== */
.admin-page { background: var(--gray-50); }
.topbar {
  height: 60px;
  background: white;
  border-bottom: 1px solid var(--gray-200);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px;
  position: sticky; top: 0; z-index: 10;
}
.topbar .brand { display: flex; align-items: center; gap: 10px; }
.topbar .brand strong { font-size: 16px; }
.topbar-sub { color: var(--gray-500); font-size: 13px; margin-left: 8px; }
.topbar-right { display: flex; align-items: center; gap: 16px; font-size: 14px; color: var(--gray-700); }
.topbar-right .link { color: var(--orange-600); font-weight: 600; }
.ver-tag {
  display: inline-flex; align-items: center; gap: 3px;
  font-family: ui-monospace, "SF Mono", monospace;
  font-size: 11px; color: var(--gray-500);
  background: var(--gray-100); padding: 2px 8px; border-radius: 999px;
  letter-spacing: .5px;
}

.layout { display: grid; grid-template-columns: 240px 1fr; min-height: calc(100vh - 60px); }
.sidebar {
  background: white;
  border-right: 1px solid var(--gray-200);
  padding: 20px 12px;
  display: flex; flex-direction: column;
}
.sidebar nav { display: flex; flex-direction: column; gap: 4px; flex-grow: 1; }
.nav-item {
  text-align: left; background: transparent; border: 0;
  padding: 10px 14px; border-radius: 10px;
  font-weight: 600; color: var(--gray-700); cursor: pointer;
  display: flex; align-items: center; gap: 8px;
}
.nav-item:hover { background: var(--gray-100); }
.nav-item.active {
  background: var(--orange-50); color: var(--orange-700);
}
.sidebar-foot {
  padding: 10px 14px; border-top: 1px solid var(--gray-100); margin-top: 10px;
  font-size: 12px; color: var(--gray-500);
}
.sidebar-foot a { color: inherit; text-decoration: underline; }

.content { padding: 28px 32px; max-width: 1400px; }
.content h2 { font-size: 22px; margin-bottom: 6px; }
.content .sub { color: var(--gray-500); margin-bottom: 20px; font-size: 14px; }
.hint { color: var(--gray-500); padding: 40px; text-align: center; }

/* ===== Table ===== */
.table-wrap {
  background: white; border-radius: 14px; border: 1px solid var(--gray-200);
  overflow: hidden;
}
.row-head, .row {
  display: grid; align-items: center; gap: 12px;
  padding: 12px 16px; border-bottom: 1px solid var(--gray-100);
  font-size: 14px;
}
.row-head {
  background: var(--gray-50); font-weight: 700; color: var(--gray-700);
  font-size: 12px; letter-spacing: 1px; text-transform: uppercase;
}
.row:last-child { border-bottom: 0; }
.row:hover { background: var(--gray-50); }
.actions { display: flex; gap: 6px; justify-content: flex-end; }
.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.toolbar .info { color: var(--gray-500); font-size: 13px; }

/* ===== Form ===== */
.form-wrap {
  background: white; border-radius: 14px; border: 1px solid var(--gray-200);
  padding: 24px; margin-bottom: 20px;
}
.form-wrap h3 { font-size: 16px; margin-bottom: 16px; }
.form-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.form-grid.col2 { grid-template-columns: repeat(2, 1fr); }
.form-grid.col1 { grid-template-columns: 1fr; }
.form-grid label {
  display: flex; flex-direction: column; gap: 4px;
  font-size: 12px; font-weight: 700; color: var(--gray-700);
}
.form-grid input, .form-grid textarea, .form-grid select {
  padding: 8px 10px; border: 1.5px solid var(--gray-200); border-radius: 8px;
  outline: none; font-weight: 400; font-size: 14px;
}
.form-grid input:focus, .form-grid textarea:focus, .form-grid select:focus { border-color: var(--orange-500); }
.form-grid textarea { resize: vertical; min-height: 60px; font-family: inherit; }
.form-actions {
  display: flex; gap: 8px; margin-top: 16px;
  padding-top: 16px; border-top: 1px solid var(--gray-100);
}
.lang-tabs { display: flex; gap: 4px; margin-bottom: 12px; }
.lang-tab {
  padding: 6px 14px; border: 1.5px solid var(--gray-200); border-radius: 999px;
  background: white; cursor: pointer; font-weight: 600; font-size: 13px;
  color: var(--gray-500);
}
.lang-tab.active { background: var(--orange-50); border-color: var(--orange-400); color: var(--orange-700); }
.lang-section { display: none; }
.lang-section.active { display: block; }

.tag { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 700; }
.tag-on { background: var(--green-50); color: var(--green-700); }
.tag-off { background: var(--gray-100); color: var(--gray-500); }
.color-dot { display: inline-block; width: 16px; height: 16px; border-radius: 50%; vertical-align: middle; margin-right: 6px; border: 1px solid var(--gray-200); }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--gray-200); }
  .sidebar nav { flex-direction: row; overflow-x: auto; }
  .form-grid { grid-template-columns: 1fr; }
}