body {
  background-color: #f7f7f5;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
.card-header { font-weight: 500; }
table th { white-space: nowrap; }

/* ---------- 标题字体 ---------- */
h1, h2, h3, h4, h5, h6,
.navbar-brand,
.login-brand-mark,
.login-title,
.kpi-value {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ---------- 现代化表单控件（下拉菜单/输入框） ---------- */
.form-select,
.form-control {
  border: 1px solid #dcdad2;
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  font-size: 0.875rem;
  color: #2a2a28;
  background-color: #fff;
  box-shadow: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding-right: 2.4rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%236b6a64' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round' d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  background-size: 14px 14px;
  cursor: pointer;
}

.form-select:hover,
.form-control:hover {
  border-color: #b9b6a8;
}

.form-select:focus,
.form-control:focus {
  border-color: #4a9bde;
  box-shadow: 0 0 0 3px rgba(74, 155, 222, 0.18);
  outline: none;
}

.form-select:disabled {
  background-color: #f4f3ef;
  color: #a8a69d;
  cursor: not-allowed;
}

/* 下拉展开的选项列表（现代浏览器支持，旧浏览器会退化为系统默认） */
.form-select option {
  padding: 8px 10px;
}

.form-check-input {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  width: 18px;
  height: 18px;
  border: 1.5px solid #c9c7bc;
  border-radius: 5px;
  background-color: #fff;
  cursor: pointer;
  position: relative;
  top: 2px;
  transition: background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-check-input:hover {
  border-color: #4a9bde;
}
.form-check-input:checked {
  background-color: #4a9bde;
  border-color: #4a9bde;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'%3E%3Cpath fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' d='M3 7.2l2.6 2.6L11 4.2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 12px 12px;
}
.form-check-input:focus {
  box-shadow: 0 0 0 3px rgba(74, 155, 222, 0.18);
  outline: none;
  border-color: #4a9bde;
}
.form-check-label {
  cursor: pointer;
  padding-left: 2px;
}

.btn-primary {
  background-color: #4a9bde;
  border-color: #4a9bde;
}
.btn-primary:hover {
  background-color: #3c8bd0;
  border-color: #3c8bd0;
}

/* ---------- 顶部导航栏（蓝色 + 系统字体）---------- */
.navbar-blue {
  background-color: #4a9bde;
}
.navbar-blue .navbar-brand,
.navbar-blue .nav-link,
.navbar-blue .navbar-text {
  color: #fff !important;
}
.navbar-blue .nav-link:hover { color: #eaf3fc !important; }
.navbar-blue .navbar-brand,
.navbar-blue .nav-link,
.navbar-blue .navbar-text,
.navbar-blue .btn {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ---------- 登录页 ---------- */
.login-page {
  margin: 0;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

.login-bg {
  position: fixed;
  inset: 0;
  background-image: url('img/login-bg.jpg');
  background-size: cover;
  background-position: center 45%;
  filter: saturate(0.9);
  z-index: 0;
}

.login-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, rgba(20, 24, 22, 0.82) 0%, rgba(30, 38, 34, 0.55) 55%, rgba(20, 24, 22, 0.35) 100%);
  z-index: 1;
}

.login-wrap {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 5vw;
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: rgba(255, 255, 255, 0.10);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 16px;
  padding: 2.4rem 2.2rem;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  color: #fff;
}

.login-brand { margin-bottom: 1.8rem; display: flex; flex-direction: column; }
.login-brand-mark {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #fff;
}
.login-brand-sub {
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  color: rgba(255,255,255,0.6);
  margin-top: 2px;
}

.login-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: #fff;
}
.login-subtitle {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 1.6rem;
}

.login-label {
  color: rgba(255,255,255,0.75);
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
}

.login-input {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  padding: 0.65rem 0.9rem;
  border-radius: 8px;
}
.login-input::placeholder { color: rgba(255,255,255,0.4); }
.login-input:focus {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.55);
  color: #fff;
  box-shadow: none;
}

.login-btn {
  background: #fff;
  color: #16201c;
  font-weight: 600;
  padding: 0.65rem;
  border-radius: 8px;
  letter-spacing: 0.03em;
  border: none;
  transition: background 0.15s ease;
}
.login-btn:hover { background: #e6e6e6; color: #16201c; }

.login-footer {
  margin-top: 1.8rem;
  font-size: 0.7rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.05em;
  text-align: center;
}

@media (max-width: 768px) {
  .login-wrap { justify-content: center; padding: 6vw; }
}