/* 简洁素色界面 */
:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #666666;
  --border: #dddddd;
  --btn: #222222;
  --btn-hover: #000000;
  --ok: #1a7f37;
  --err: #b42318;
  --warn: #b35c00;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}

a {
  color: inherit;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

h1 {
  font-size: 1.5rem;
  font-weight: 600;
  text-align: center;
  margin: 0 0 24px;
}

h2 {
  font-size: 1.15rem;
  margin: 24px 0 12px;
}

.card {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  margin-bottom: 16px;
  background: #fafafa;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

label {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 4px;
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="file"],
select {
  width: 100%;
  max-width: 360px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 1rem;
}

button,
.btn {
  display: inline-block;
  padding: 8px 16px;
  background: var(--btn);
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.95rem;
  text-decoration: none;
  text-align: center;
}

button.secondary,
.btn.secondary {
  background: #555;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button:hover:not(:disabled),
.btn:hover {
  background: var(--btn-hover);
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
}

.err {
  color: var(--err);
  font-size: 0.9rem;
  margin-top: 8px;
}

.ok {
  color: var(--ok);
  font-size: 0.9rem;
  margin-top: 8px;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.stat {
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: 6px;
  background: #fff;
  min-width: 120px;
}

.stat strong {
  display: block;
  font-size: 1.25rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th,
td {
  border: 1px solid var(--border);
  padding: 8px;
  text-align: left;
  vertical-align: top;
  word-break: break-all;
}

th {
  background: #f0f0f0;
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  border: 1px solid var(--border);
}

.tag.ok {
  border-color: #8fd19e;
  color: var(--ok);
}

.tag.bad {
  border-color: #f1b0a8;
  color: var(--err);
}

.tag.neutral {
  border-color: #c8c8c8;
  color: var(--muted);
}

button.btn-danger,
.btn.btn-danger {
  background: var(--err);
  color: #fff;
}

button.btn-danger:hover:not(:disabled),
.btn.btn-danger:hover {
  background: #8f1c14;
}

button.btn-sm,
.btn.btn-sm {
  padding: 4px 10px;
  font-size: 0.8rem;
}

.link-status-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 12px 0 8px;
}

.link-status-tabs .link-tab {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  font-size: 0.875rem;
}

.link-status-tabs .link-tab:hover {
  background: #f5f5f5;
}

.link-status-tabs .link-tab.active {
  border-color: var(--fg);
  font-weight: 600;
  background: #fafafa;
}

.link-status-tabs .tab-count {
  color: var(--muted);
  margin-left: 4px;
}

/* 账号管理 */
.acc-mgmt-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 4px;
}

.acc-mgmt-title {
  margin: 0;
  font-size: 1.15rem;
}

.acc-mgmt-stats {
  margin: 0;
  font-size: 0.9rem;
}

.text-used {
  color: var(--err);
  font-weight: 600;
}

.text-unused {
  color: var(--ok);
  font-weight: 600;
}

button.btn-outline-danger,
.btn.btn-outline-danger {
  background: #fff;
  color: var(--err);
  border: 2px solid var(--err);
}

button.btn-outline-danger:hover:not(:disabled),
.btn.btn-outline-danger:hover {
  background: #fff8f7;
}

a.api-link {
  word-break: break-all;
  font-size: 0.8rem;
}

td.acc-op-btns {
  white-space: nowrap;
}

td.acc-op-btns .acc-reset-one,
td.acc-op-btns .acc-del-one {
  display: block;
  width: 100%;
  margin-bottom: 4px;
}

td.acc-op-btns .acc-del-one:last-child {
  margin-bottom: 0;
}

.center {
  text-align: center;
}

.login-choice {
  display: grid;
  gap: 16px;
  max-width: 420px;
  margin: 0 auto;
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
}

.countdown {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin: 8px 0;
}

.open-wait {
  display: none;
  padding: 12px 0;
}

/* 管理员后台标签页 */
.admin-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin: 0 0 20px;
  padding: 0;
}

.admin-tab {
  padding: 10px 14px;
  margin-bottom: -1px;
  background: #fafafa;
  color: var(--fg);
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 6px 6px 0 0;
  cursor: pointer;
  font-size: 0.9rem;
}

.admin-tab:hover {
  background: #f0f0f0;
}

.admin-tab.active {
  background: var(--bg);
  border-color: var(--border);
  border-bottom-color: var(--bg);
  font-weight: 600;
}

.admin-panel {
  display: none;
}

.admin-panel.is-active {
  display: block;
}

.admin-panel .card:first-child h2 {
  margin-top: 0;
}