/* --- 全局与重置 --- */
:root {
  --primary-color: #3498db;
  --dark-primary-color: #2980b9;
  --secondary-color: #2c3e50;
  --background-color: #f4f7f9;
  --container-bg-color: #ffffff;
  --text-color: #333;
  --light-text-color: #777;
  --border-color: #e0e0e0;
  --error-color: #e74c3c;
  --success-color: #2ecc71;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  margin: 0;
  background-color: var(--background-color);
  color: var(--text-color);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

/* --- 登录页面 --- */
.container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.login-form {
  background: var(--container-bg-color);
  padding: 2rem 3rem;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  width: 100%;
  max-width: 420px;
}

h1 {
  text-align: center;
  color: var(--secondary-color);
  margin-top: 0;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #555;
}

.form-group input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  transition: border-color 0.3s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
}

button {
  width: 100%;
  padding: 0.8rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: var(--dark-primary-color);
}

.error-message {
  color: var(--error-color);
  text-align: center;
  margin-top: 1rem;
  height: 1em; /* 占位防止跳动 */
}

/* --- 后台主布局 --- */
.app-layout {
  display: flex;
  width: 100vw;
  height: 100vh;
}

.sidebar {
  width: 240px;
  background-color: var(--secondary-color);
  color: #ecf0f1;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-header {
  padding: 1.5rem;
  text-align: center;
  border-bottom: 1px solid #3b4c5e;
}

.sidebar-header h2 {
  margin: 0;
  font-size: 1.2rem;
}

.sidebar-menu {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
  flex-grow: 1;
}

.sidebar-menu li a {
  display: block;
  padding: 0.9rem 1.5rem;
  color: #ecf0f1;
  text-decoration: none;
  transition: background-color 0.3s;
  border-left: 3px solid transparent;
}

.sidebar-menu li a:hover {
  background-color: #3b4c5e;
}

.sidebar-menu li a.active {
  background-color: var(--primary-color);
  border-left-color: #ecf0f1;
  font-weight: 600;
}

.sidebar-footer {
  padding: 1.5rem;
  border-top: 1px solid #3b4c5e;
}

.sidebar-footer p {
  margin: 0 0 1rem 0;
  font-size: 0.9rem;
  text-align: center;
}

.sidebar-footer button {
  background-color: #c0392b;
}
.sidebar-footer button:hover {
  background-color: #a93226;
}

.content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.content-header {
  padding: 1.5rem 2rem;
  background-color: var(--container-bg-color);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.content-header h1 {
  margin: 0;
  text-align: left;
  font-size: 1.8rem;
}

.content-body {
  padding: 2rem;
  flex-grow: 1;
}

/* --- 筛选器 --- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: center;
}

.filter-bar input,
.filter-bar select {
  padding: 0.6rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 0.9rem;
}

.filter-bar button {
  width: auto;
  padding: 0.6rem 1.2rem;
}

/* --- 表格 --- */
.table-container {
  background-color: var(--container-bg-color);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  overflow-x: auto;
}

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

table th,
table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

table th {
  background-color: #f8f9fa;
  font-weight: 600;
}

table tbody tr:last-child td {
  border-bottom: none;
}

table tbody tr:hover {
  background-color: #f1f3f5;
}

/* --- 分页 --- */
.pagination-bar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-top: 1.5rem;
  gap: 1rem;
}

.pagination-bar button {
  width: auto;
  padding: 0.5rem 1rem;
  background-color: var(--container-bg-color);
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.pagination-bar button:hover {
  background-color: var(--primary-color);
  color: white;
}

.pagination-bar button:disabled {
  background-color: #e9ecef;
  border-color: var(--border-color);
  color: #adb5bd;
  cursor: not-allowed;
}

#page-info {
  font-weight: 600;
}

/* --- 状态标签 --- */
.status {
  padding: 0.2rem 0.5rem;
  border-radius: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  color: white;
  text-transform: capitalize;
}

.status-paid, .status-completed, .status-success, .status-active, .status-bound { background-color: var(--success-color); }
.status-pending, .status-processing { background-color: #f39c12; }
.status-failed, .status-failure, .status-cancelled, .status-suspended, .status-revoked { background-color: var(--error-color); }
.status-refunded { background-color: #95a5a6; }
.status-partially_refunded { background-color: var(--primary-color); }
.status-closed, .status-unbound, .status-frozen, .status-deleted { background-color: #7f8c8d; }


/* --- 小按钮 --- */
.btn-small {
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
  width: auto;
}

/* --- Tabs --- */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.tab-link {
  padding: 0.8rem 1.5rem;
  cursor: pointer;
  background-color: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px; /* 让激活的 tab 边框覆盖父元素边框 */
  font-size: 1rem;
  color: var(--light-text-color);
}

.tab-link.active {
  border-bottom-color: var(--primary-color);
  color: var(--primary-color);
  font-weight: 600;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* --- 工具栏 --- */
.toolbar {
  margin-bottom: 1.5rem;
}

/* --- 弹窗 (Modal) --- */
.modal {
  display: none; /* 默认隐藏 */
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.5);
  justify-content: center;
  align-items: center;
}

.modal-content {
  background-color: #fefefe;
  margin: auto;
  padding: 2rem;
  border: 1px solid #888;
  border-radius: 8px;
  width: 90%;
  max-width: 500px;
  position: relative;
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.close-btn {
  color: #aaa;
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 28px;
  font-weight: bold;
}

.close-btn:hover,
.close-btn:focus {
  color: black;
  text-decoration: none;
  cursor: pointer;
}

#password-group small {
  font-size: 0.8rem;
  color: var(--light-text-color);
}

/* --- 表格中的操作按钮 --- */
.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn-edit {
    background-color: #f39c12;
}
.btn-edit:hover {
    background-color: #d68910;
}

.btn-disable {
    background-color: #e74c3c;
}
.btn-disable:hover {
    background-color: #c0392b;
}

.btn-enable {
    background-color: #2ecc71;
}
.btn-enable:hover {
    background-color: #27ae60;
}