:root {
  --brand: #ff4d4f;
  --ink: #1f2329;
  --ink-2: #4e5969;
  --ink-3: #86909c;
  --line: #e8eaee;
  --bg: #f4f6f9;
  --card: #fff;
  --radius: 12px;
  --ok: #12b76a;
  --warn: #f79009;
  --err: #f04438;
}

* { box-sizing: border-box; }
/* hidden 属性优先于任何 display 声明，避免弹窗/视图被类选择器覆盖后常显 */
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

.primary-btn {
  background: linear-gradient(135deg, var(--brand), #ff7a45);
  color: #fff; border: 0; border-radius: 8px; padding: 9px 18px;
  font-weight: 600; cursor: pointer; transition: filter .15s ease;
}
.primary-btn:hover { filter: brightness(1.05); }
.primary-btn:disabled { opacity: .6; cursor: not-allowed; }
.ghost-btn {
  background: #fff; border: 1px solid var(--line); border-radius: 8px;
  padding: 7px 14px; color: var(--ink-2); cursor: pointer;
}
.ghost-btn:hover { border-color: var(--brand); color: var(--brand); }
.ghost-link { color: var(--ink-2); font-size: 13px; }
.ghost-link:hover { color: var(--brand); }
.icon-btn { background: none; border: 0; font-size: 16px; color: var(--ink-3); cursor: pointer; }
.muted { color: var(--ink-3); font-size: 12px; }

/* ---------- 登录 ---------- */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px;
  background: radial-gradient(900px 380px at 90% 0%, rgba(255, 77, 79, .14), transparent 60%), var(--bg);
}
.login-card {
  width: 100%; max-width: 380px; background: #fff; border-radius: 16px;
  padding: 34px 28px; box-shadow: 0 18px 50px rgba(15, 23, 42, .1);
}
.login-logo {
  width: 46px; height: 46px; border-radius: 12px; margin: 0 auto 14px;
  background: linear-gradient(135deg, var(--brand), #ff8a4c); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 20px;
}
.login-card h1 { font-size: 19px; text-align: center; margin: 0 0 6px; }
.login-tip { text-align: center; color: var(--ink-3); font-size: 13px; margin: 0 0 22px; }
.login-card label { display: block; margin-bottom: 14px; font-size: 13px; color: var(--ink-2); }
.login-card input {
  width: 100%; margin-top: 6px; padding: 11px 12px; border: 1px solid var(--line);
  border-radius: 9px; outline: none; transition: border-color .15s ease;
}
.login-card input:focus { border-color: var(--brand); }
.login-card .primary-btn { width: 100%; padding: 12px; margin-top: 6px; }
.login-error { color: var(--err); font-size: 13px; margin: 12px 0 0; text-align: center; }

/* ---------- 框架 ---------- */
.admin-header {
  background: #fff; border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 22px; height: 62px; position: sticky; top: 0; z-index: 20; gap: 16px;
}
.ah-left { display: flex; align-items: center; gap: 10px; min-width: 0; }
.ah-logo {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  background: linear-gradient(135deg, var(--brand), #ff8a4c); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.ah-left div { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.ah-left strong { font-size: 15px; white-space: nowrap; }
.ah-left small { color: var(--ink-3); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ah-right { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--ink-2); }
.ah-user { color: var(--ink-3); }

.layout { display: flex; align-items: flex-start; gap: 0; }
.side-nav {
  width: 190px; flex: none; position: sticky; top: 62px;
  padding: 18px 12px; display: flex; flex-direction: column; gap: 4px;
  height: calc(100vh - 62px);
}
.side-nav button {
  text-align: left; background: none; border: 0; padding: 11px 14px;
  border-radius: 9px; color: var(--ink-2); cursor: pointer; font-size: 14px;
}
.side-nav button:hover { background: #fff; color: var(--brand); }
.side-nav button.active { background: #fff; color: var(--brand); font-weight: 600; box-shadow: 0 2px 10px rgba(15,23,42,.05); }

.content { flex: 1; min-width: 0; padding: 20px 24px 60px; }
.view h2 { font-size: 20px; margin: 2px 0 18px; }

.panel {
  background: #fff; border-radius: var(--radius); padding: 20px;
  box-shadow: 0 2px 10px rgba(15, 23, 42, .04); margin-bottom: 18px;
}
.panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; margin-bottom: 16px; flex-wrap: wrap; }
.panel-head h3 { margin: 0 0 2px; font-size: 15px; }
.panel-head .head-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.panel-head .head-actions input, .panel-head .head-actions select {
  border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; outline: none;
}

.stat-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-bottom: 18px; }
.stat-card { background: #fff; border-radius: var(--radius); padding: 16px 18px; box-shadow: 0 2px 10px rgba(15,23,42,.04); }
.stat-card small { color: var(--ink-3); font-size: 12px; display: block; margin-bottom: 4px; }
.stat-card b { font-size: 24px; letter-spacing: -0.5px; }
.stat-card .unit { font-size: 12px; color: var(--ink-3); margin-left: 4px; font-weight: 400; }

.chart { display: flex; align-items: flex-end; gap: 8px; height: 150px; padding-top: 10px; }
.chart .bar-col { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; gap: 6px; height: 100%; }
.chart .bar {
  width: 100%; max-width: 26px; background: linear-gradient(180deg, #ff8a4c, var(--brand));
  border-radius: 5px 5px 0 0; min-height: 3px; transition: height .3s ease;
}
.chart .bar-val { font-size: 11px; color: var(--ink-2); }
.chart .bar-label { font-size: 11px; color: var(--ink-3); white-space: nowrap; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th, .data-table td { padding: 11px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.data-table th { color: var(--ink-3); font-weight: 500; font-size: 12px; background: #fafbfc; }
.data-table tr:hover td { background: #fcfcfd; }
.data-table td .title-cell { max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.table-wrap { overflow-x: auto; }

.pill { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; }
.pill.ok { background: #e8f8f0; color: var(--ok); }
.pill.off { background: #f2f4f7; color: var(--ink-3); }
.pill.warn { background: #fff6e8; color: var(--warn); }
.pill.err { background: #ffeceb; color: var(--err); }
.row-actions { display: flex; gap: 8px; white-space: nowrap; }
.link-btn { background: none; border: 0; color: #2f6fd0; cursor: pointer; font-size: 13px; padding: 0; }
.link-btn.danger { color: var(--err); }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.form-grid label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--ink-2); }
.form-grid input, .form-grid select, .form-grid textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 9px; padding: 9px 11px;
  outline: none; background: #fff; transition: border-color .15s ease;
}
.form-grid input:focus, .form-grid select:focus, .form-grid textarea:focus { border-color: var(--brand); }
.form-grid input[type="color"] { padding: 3px; height: 38px; }
.form-grid .span2 { grid-column: span 2; }
.form-grid .align-end { justify-content: flex-end; }
.form-grid h4 { margin: 4px 0 2px; font-size: 14px; }
.form-actions { display: flex; align-items: center; gap: 12px; }
.switch-row { display: flex; flex-wrap: wrap; gap: 14px; }
.switch-row label { flex-direction: row; align-items: center; gap: 6px; }
.switch-row input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--brand); }

/* ---------- API 卡片 ---------- */
.api-list { display: flex; flex-direction: column; gap: 12px; }
.api-card { border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.api-card .api-main { min-width: 0; }
.api-card .api-title { display: flex; align-items: center; gap: 8px; font-weight: 600; margin-bottom: 4px; flex-wrap: wrap; }
.api-card .api-meta { font-size: 12px; color: var(--ink-3); word-break: break-all; }
.api-card .api-actions { display: flex; align-items: center; gap: 10px; }
.api-card .test-msg { font-size: 12px; margin-top: 6px; }
.api-card .test-msg.ok { color: var(--ok); }
.api-card .test-msg.err { color: var(--err); }

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed; inset: 0; background: rgba(15, 23, 42, .55); backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center; padding: 18px; z-index: 60;
}
.modal { background: #fff; border-radius: 14px; width: 100%; max-width: 560px; max-height: 88vh; display: flex; flex-direction: column; overflow: hidden; }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--line); }
.modal-head h3 { margin: 0; font-size: 16px; }
.modal-body { padding: 18px 20px; overflow-y: auto; }
.modal-foot { padding: 14px 20px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; gap: 10px; }

.toast {
  position: fixed; left: 50%; bottom: 26px; transform: translate(-50%, 16px);
  background: rgba(31, 35, 41, .92); color: #fff; padding: 10px 18px; border-radius: 999px;
  font-size: 13px; opacity: 0; pointer-events: none; transition: all .2s ease; z-index: 80; max-width: 90vw;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 1080px) {
  .stat-grid { grid-template-columns: repeat(3, 1fr); }
  .two-col { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .admin-header { padding: 0 14px; height: 56px; }
  .ah-user, .ghost-link { display: none; }
  .layout { flex-direction: column; }
  .side-nav {
    width: 100%; height: auto; position: sticky; top: 56px; flex-direction: row;
    overflow-x: auto; padding: 10px 12px; background: var(--bg); z-index: 15; gap: 6px;
  }
  .side-nav button { white-space: nowrap; background: #fff; }
  .content { padding: 14px 14px 50px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .span2 { grid-column: span 1; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}