/* ===== 全局变量 ===== */
:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #f59e0b;
  --bg: #f1f5f9;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-secondary: #64748b;
  --border: #e2e8f0;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== 导航栏 ===== */
.navbar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}

.navbar-nav {
  display: flex;
  gap: 16px;
  align-items: center;
  list-style: none;
}

.navbar-nav a, .navbar-nav button {
  font-size: 14px;
  color: var(--text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: all 0.2s;
}

.navbar-nav a:hover, .navbar-nav button:hover {
  color: var(--primary);
  background: #f1f5f9;
  text-decoration: none;
}

/* ===== 容器 ===== */
.container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 24px;
}

/* ===== 卡片 ===== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 20px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  line-height: 1.5;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); text-decoration: none; color: #fff; }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #15803d; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }

.btn-info { background: #3b82f6; color: #fff; }
.btn-info:hover { background: #2563eb; }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.btn-sm { padding: 4px 10px; font-size: 13px; }

/* ===== 表单 ===== */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text);
}

.form-group label .required {
  color: var(--danger);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text);
  background: #fff;
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control[readonly] {
  background: #f8fafc;
  color: var(--text-secondary);
}

select.form-control {
  appearance: auto;
}

textarea.form-control {
  resize: vertical;
  min-height: 80px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
}

/* ===== 表格 ===== */
.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

table th, table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

table th {
  background: #f8fafc;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

table tr:hover td {
  background: #f8fafc;
}

/* ===== 类型标签 ===== */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success { background: #dcfce7; color: #166534; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-info { background: #dbeafe; color: #1e40af; }

/* ===== 分页 ===== */
.pagination {
  display: flex;
  gap: 4px;
  justify-content: center;
  align-items: center;
  margin-top: 20px;
  flex-wrap: wrap;
}

.pagination button {
  padding: 6px 12px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
  transition: all 0.2s;
}

.pagination button:hover:not(:disabled) {
  border-color: var(--primary);
  color: var(--primary);
}

.pagination button.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

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

/* ===== 筛选栏 ===== */
.filter-bar {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.filter-bar .form-control {
  width: auto;
  min-width: 140px;
}

.filter-bar input[type="text"] {
  min-width: 200px;
}

/* ===== 统计卡片 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  text-align: center;
}

.stat-card .stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.stat-card .stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
}

.stat-card.success .stat-value { color: var(--success); }
.stat-card.danger .stat-value { color: var(--danger); }
.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.primary .stat-value { color: var(--primary); }

/* ===== 消息提示 ===== */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 12px 20px;
  border-radius: var(--radius);
  color: #fff;
  font-size: 14px;
  z-index: 9999;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  transform: translateX(120%);
  transition: transform 0.3s ease;
}

.toast.show { transform: translateX(0); }
.toast.toast-success { background: var(--success); }
.toast.toast-error { background: var(--danger); }
.toast.toast-warning { background: var(--warning); }

/* ===== 登录页 ===== */
.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
  padding-bottom: 48px;
}

.login-card {
  background: #fff;
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.login-card h1 {
  text-align: center;
  margin-bottom: 8px;
  font-size: 24px;
  color: var(--text);
}

.login-card .subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 14px;
}

.login-card .btn-primary {
  width: 100%;
  padding: 10px;
  font-size: 16px;
  margin-top: 8px;
}

.login-error {
  color: var(--danger);
  font-size: 14px;
  text-align: center;
  margin-bottom: 12px;
  display: none;
}

/* ===== 工具栏 ===== */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-secondary);
}

.empty-state p {
  font-size: 16px;
  margin-bottom: 16px;
}

/* ===== 确认弹窗 ===== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
}

.modal {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  max-width: 400px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.modal h3 { margin-bottom: 12px; }
.modal p { color: var(--text-secondary); margin-bottom: 20px; font-size: 14px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; }

/* ===== 月度明细表格 ===== */
.monthly-table {
  margin-top: 24px;
}

.monthly-table table th {
  text-transform: none;
}

/* ===== 移动端项目卡片 ===== */
.project-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  margin-bottom: 12px;
  border-left: 3px solid var(--primary);
}

.project-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.project-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
  margin-right: 8px;
  word-break: break-all;
}

.project-card-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
  margin-right: 8px;
}

.project-card-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 12px;
  margin-bottom: 10px;
}

.project-card-field {
  display: flex;
  flex-direction: column;
}

.project-card-field .field-label {
  font-size: 11px;
  color: var(--text-secondary);
}

.project-card-field .field-value {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}

.project-card-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

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

/* ===== 备案信息 ===== */
.icp-footer {
  text-align: center;
  padding: 16px 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

.icp-footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

.icp-footer a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* 登录/注册页的备案信息（绝对定位到底部） */
.login-wrapper .icp-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  color: rgba(255,255,255,0.7);
}

.login-wrapper .icp-footer a {
  color: rgba(255,255,255,0.7);
}

.login-wrapper .icp-footer a:hover {
  color: #fff;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  /* 导航栏：横向滚动，不换行 */
  .navbar {
    height: auto;
    padding: 8px 12px;
    flex-wrap: wrap;
    gap: 4px;
  }
  .navbar-brand {
    font-size: 15px;
    flex-shrink: 0;
  }
  .navbar-nav {
    gap: 4px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }
  .navbar-nav a, .navbar-nav button {
    font-size: 12px;
    padding: 4px 8px;
    white-space: nowrap;
  }

  .container { padding: 12px; }
  .card { padding: 12px; }

  /* 工具栏：标题和按钮横排 */
  .toolbar {
    flex-direction: row;
    align-items: center;
  }
  .toolbar h2 {
    font-size: 18px;
    flex-shrink: 0;
  }
  .toolbar .btn {
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* 筛选栏：两列网格 */
  .filter-bar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    align-items: stretch;
  }
  .filter-bar .form-control {
    min-width: auto;
    width: 100%;
  }
  .filter-bar input[type="text"] {
    min-width: auto;
  }

  /* 统计卡片 */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stat-card { padding: 12px; }
  .stat-card .stat-value { font-size: 20px; }
  .stat-card .stat-label { font-size: 11px; }

  /* 表格：紧凑 */
  table th, table td {
    padding: 8px 6px;
    font-size: 12px;
  }
  .actions-cell {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
  }
  .btn-sm {
    padding: 3px 6px;
    font-size: 11px;
  }

  /* 表单 */
  .form-row { grid-template-columns: 1fr; gap: 8px; }
}