:root {
  --bg: #0f1115;
  --bg-elev: #161922;
  --bg-elev-2: #1d212c;
  --border: #2a2f3c;
  --text: #e6e8ef;
  --text-dim: #9298a8;
  --text-faint: #676d7d;
  --accent: #5b8cff;
  --accent-dim: #2c3f6e;
  --accent-glow: rgba(91, 140, 255, 0.18);
  --good: #3ecf8e;
  --warn: #e8b339;
  --bad: #ef5a6f;
  --radius: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  height: 100%;
}

body {
  display: flex;
  min-height: 100vh;
}

a { color: var(--accent); }

/* ---------- 登录页 ---------- */
#loginScreen {
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 20% 20%, rgba(91,140,255,0.10), transparent 45%),
    radial-gradient(circle at 80% 70%, rgba(62,207,142,0.08), transparent 45%),
    var(--bg);
}

.login-card {
  width: 380px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 36px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.login-card .brand-mark {
  width: 52px;
  height: 52px;
  margin: 0 auto 18px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), #8f6bff);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 20px;
  color: white;
}

.login-card h1 {
  font-size: 19px;
  margin: 0 0 6px;
  font-weight: 600;
}

.login-card p {
  color: var(--text-dim);
  font-size: 13px;
  margin: 0 0 28px;
  line-height: 1.6;
}

#googleBtnContainer {
  display: flex;
  justify-content: center;
  margin-bottom: 14px;
}

.login-status {
  font-size: 12.5px;
  color: var(--text-faint);
  min-height: 18px;
  margin-top: 10px;
  line-height: 1.6;
}

.login-status.error { color: var(--bad); }
.login-status.pending { color: var(--warn); }

/* ---------- 应用整体布局 ---------- */
#appScreen {
  display: none;
  width: 100%;
  min-height: 100vh;
}

.app-layout {
  display: flex;
  width: 100%;
  min-height: 100vh;
}

.sidebar {
  width: 236px;
  flex-shrink: 0;
  background: var(--bg-elev);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 18px 12px;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px 20px;
}

.sidebar-header .brand-mark {
  width: 32px; height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #8f6bff);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px; color: #fff;
  flex-shrink: 0;
}

.sidebar-header .title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
}
.sidebar-header .subtitle {
  font-size: 11px;
  color: var(--text-faint);
}

.nav-group-label {
  font-size: 11px;
  color: var(--text-faint);
  padding: 14px 10px 6px;
  letter-spacing: 0.04em;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  color: var(--text-dim);
  font-size: 13.5px;
  cursor: pointer;
  user-select: none;
  transition: background 0.12s, color 0.12s;
  white-space: nowrap;
}

.nav-item svg { flex-shrink: 0; width: 16px; height: 16px; }

.nav-item:hover { background: var(--bg-elev-2); color: var(--text); }

.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent);
  font-weight: 600;
}

.sidebar-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
}

.user-chip img {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--bg-elev-2);
}

.user-chip .u-name { font-size: 12.5px; font-weight: 600; }
.user-chip .u-role { font-size: 10.5px; color: var(--text-faint); }

.logout-link {
  font-size: 12px;
  color: var(--text-faint);
  cursor: pointer;
  padding: 8px 10px 2px;
  display: block;
}
.logout-link:hover { color: var(--bad); }

/* ---------- 主内容区 ---------- */
.main {
  flex: 1;
  min-width: 0;
  padding: 28px 34px 60px;
}

.main-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 22px;
  gap: 20px;
  flex-wrap: wrap;
}

.main-header h2 {
  font-size: 20px;
  margin: 0 0 4px;
  font-weight: 600;
}
.main-header .desc {
  font-size: 12.5px;
  color: var(--text-faint);
}

.toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  width: 260px;
}
.search-box input {
  width: 100%;
}
.search-box svg {
  position: absolute;
  left: 10px; top: 50%; transform: translateY(-50%);
  width: 14px; height: 14px; color: var(--text-faint);
}
.search-box input { padding-left: 30px; }

input, select, textarea {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--bg-elev-2);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.12s;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn svg { width: 14px; height: 14px; }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: #4a79e6; color: #fff; opacity: 0.95; }

.btn-danger:hover { border-color: var(--bad); color: var(--bad); }

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-faint);
  padding: 6px 8px;
}
.btn-ghost:hover { color: var(--text); background: var(--bg-elev-2); }

.count-pill {
  font-size: 11.5px;
  color: var(--text-faint);
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 20px;
}

/* ---------- 表格 ---------- */
.table-wrap {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  text-align: left;
  padding: 11px 14px;
  color: var(--text-faint);
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: 0.03em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  position: sticky;
  top: 0;
  background: var(--bg-elev);
}

tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg-elev-2); }

td.actions {
  white-space: nowrap;
  width: 1%;
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  background: var(--bg-elev-2);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.tag.good { color: var(--good); border-color: rgba(62,207,142,0.35); background: rgba(62,207,142,0.08); }
.tag.warn { color: var(--warn); border-color: rgba(232,179,57,0.35); background: rgba(232,179,57,0.08); }
.tag.bad { color: var(--bad); border-color: rgba(239,90,111,0.35); background: rgba(239,90,111,0.08); }

.empty-state {
  padding: 60px 20px;
  text-align: center;
  color: var(--text-faint);
  font-size: 13px;
}

/* ---------- 弹窗 / 表单 ---------- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(5,6,9,0.6);
  backdrop-filter: blur(2px);
  align-items: flex-start;
  justify-content: center;
  z-index: 100;
  overflow-y: auto;
  padding: 50px 20px;
}
.modal-overlay.open { display: flex; }

.modal {
  width: 560px;
  max-width: 100%;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px 26px 20px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}

.modal h3 {
  margin: 0 0 18px;
  font-size: 16px;
  font-weight: 600;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 14px;
}

.form-field { display: flex; flex-direction: column; gap: 5px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label {
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 500;
}
.form-field textarea { resize: vertical; min-height: 60px; }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.field-required::after {
  content: " *";
  color: var(--bad);
}

/* ---------- 管理员：白名单 ---------- */
.wl-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.wl-email { font-weight: 500; }
.wl-name { font-size: 11.5px; color: var(--text-faint); }

.toast {
  position: fixed;
  bottom: 22px;
  right: 22px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  padding: 12px 18px;
  border-radius: 10px;
  font-size: 13px;
  z-index: 200;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
  opacity: 0;
  transform: translateY(6px);
  transition: all 0.2s;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error { border-color: rgba(239,90,111,0.5); color: var(--bad); }
.toast.success { border-color: rgba(62,207,142,0.5); color: var(--good); }

@media (max-width: 860px) {
  .sidebar { display: none; }
  .main { padding: 20px; }
  .form-grid { grid-template-columns: 1fr; }
}