/* Agent Management UI（Step 11.5）—— 最小样式。刻意无框架、无构建、无依赖。 */

:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --border: #dde3ea;
  --text: #1f2933;
  --text-dim: #6b7785;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --ok-bg: #dcfce7;
  --ok-fg: #166534;
  --off-bg: #e5e7eb;
  --off-fg: #4b5563;
  --err-bg: #fee2e2;
  --err-fg: #991b1b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

.hidden { display: none !important; }

/* ---------------- top bar ---------------- */

.topbar {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 28px;
  background: #111827;
  color: #f9fafb;
}

.topbar h1 { font-size: 17px; margin: 0; font-weight: 600; }
.topbar-sub { font-size: 13px; color: #9ca3af; }

/* 11.9：顶栏导航（Agent ⇄ Channel 两个管理页互链） */
.topbar-nav {
  margin-left: auto;
  font-size: 13px;
  color: #93c5fd;
  text-decoration: none;
}
.topbar-nav:hover { text-decoration: underline; }

/* ---------------- layout / card ---------------- */

.layout {
  max-width: 960px;
  margin: 24px auto;
  padding: 0 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px 24px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.05);
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.card-head h2 { font-size: 16px; margin: 0; }

.card-head-actions { display: flex; gap: 8px; }

.runtime-note {
  font-size: 12px;
  font-weight: 600;
  color: var(--err-fg);
  background: var(--err-bg);
  border-radius: 999px;
  padding: 2px 10px;
}

/* ---------------- buttons ---------------- */

.btn {
  border: 1px solid transparent;
  border-radius: 7px;
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
  background: transparent;
  transition: background 0.12s ease;
}

.btn-sm { padding: 4px 10px; font-size: 12px; }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }

.btn-ghost { border-color: var(--border); color: var(--text); background: #fff; }
.btn-ghost:hover { background: #f3f4f6; }

.btn-danger-ghost { border-color: var(--border); color: var(--danger); background: #fff; }
.btn-danger-ghost:hover { background: #fef2f2; }

.btn-success-ghost { border-color: var(--border); color: var(--success); background: #fff; }
.btn-success-ghost:hover { background: #f0fdf4; }

/* ---------------- table ---------------- */

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

.agent-table th, .agent-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.agent-table th {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.agent-table tbody tr:hover { background: #f8fafc; }

.cell-name { font-weight: 600; }

.col-actions { white-space: nowrap; text-align: right; }
.col-actions .btn { margin-left: 6px; }

.type-tag {
  display: inline-block;
  font-size: 12px;
  font-family: Consolas, Monaco, monospace;
  background: #eef2ff;
  color: #3730a3;
  border-radius: 5px;
  padding: 1px 8px;
}

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  padding: 2px 10px;
}

.badge-active { background: var(--ok-bg); color: var(--ok-fg); }
.badge-inactive { background: var(--off-bg); color: var(--off-fg); }
.badge-error { background: var(--err-bg); color: var(--err-fg); }
/* 11.9：Channel 管理态可含 disabled 等自由值（6.3），复用中性灰 */
.badge-disabled { background: var(--off-bg); color: var(--off-fg); }

.empty-hint {
  color: var(--text-dim);
  text-align: center;
  padding: 26px 0 8px;
  margin: 0;
}

/* ---------------- alerts ---------------- */

.alert {
  border-radius: 7px;
  padding: 9px 12px;
  font-size: 13px;
  margin: 0 0 14px;
}

.alert-error {
  background: var(--err-bg);
  color: var(--err-fg);
  border: 1px solid #fecaca;
}

/* ---------------- form ---------------- */

.field { margin-bottom: 16px; }

.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 5px;
}

.req { color: var(--danger); }

.field input[type="text"],
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 8px 10px;
  font-size: 13px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}

.field textarea { font-family: Consolas, Monaco, monospace; resize: vertical; }

.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.field-hint {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--text-dim);
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}