/* ==========================================================================
   base.css —— 全局基座：CSS 变量、reset、收敛后的链接下划线、按钮、图标基类、
   动画 keyframes、u- 原子工具类、无障碍焦点样式、原稿弹窗/提示/表单基础样式。
   约定：本文件不含任何版式布局（见 layout.css）与板块专属样式。
   ========================================================================== */

/* ---------- 主色调定义（原稿 10 个变量原样保留，禁止改名/改值） ---------- */
:root {
  --blue-deep: #0A2463;
  --blue-light: #1E65F3;
  --silver: #E0E6F0;
  --orange: #FF7A2F;
  --orange-light: #FF9A5C;
  --gray-dark: #666;
  --gray-light: #999;
  --white: #FFFFFF;
  --shadow: 0 2px 10px rgba(0,0,0,0.1);
  --shadow-deep: 0 5px 20px rgba(0,0,0,0.15);
}

/* ---------- 全局样式重置 ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", sans-serif;
}

body {
  background-color: #F5F7FA;
  color: #333;
  overflow-x: hidden;
}

ul, li {
  list-style: none;
}

.clearfix::after {
  content: "";
  display: block;
  clear: both;
}

.container {
  width: 95%;
  margin: 0 auto;
}

/* ---------- 链接下划线动画：收敛（原稿为全局 a::after） ----------
   1) 先兜底关闭全局下划线，避免卡片/LOGO/合作机构等处出现"意外橙色下划线"；
   2) 仅对 .nav a 与 .link 重新开启，保留原导航 hover 动效视觉。 */
a {
  text-decoration: none;
  color: inherit;
  position: relative;
}

a::after {
  content: none;
}

.nav a,
.link {
  position: relative;
}

.nav a::after,
.link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #FF7A2F;
  transition: width 0.3s ease;
}

.nav a:hover::after,
.link:hover::after {
  width: 100%;
}

/* ---------- 按钮通用样式 ---------- */
.btn {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  font-family: inherit;
  color: inherit;
  background-color: transparent;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.6s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn-orange {
  background-color: var(--orange);
  color: var(--white);
}

.btn-orange:hover {
  background-color: var(--orange-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(255, 122, 47, 0.3);
}

.btn-blue {
  background-color: var(--blue-deep);
  color: var(--white);
}

.btn-blue:hover {
  background-color: var(--blue-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(10, 36, 99, 0.3);
}

.btn-white {
  background-color: var(--white);
  color: var(--blue-deep);
  border: 1px solid var(--blue-deep);
}

.btn-white:hover {
  background-color: var(--silver);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-outline {
  background-color: transparent;
  color: var(--gray-dark);
  border: 1px solid var(--silver);
  padding: 6px 15px;
  font-size: 13px;
}

.btn-outline:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.btn-disabled {
  background-color: var(--gray-light) !important;
  cursor: not-allowed !important;
}

/* 新增组件按钮：继承 .btn 的 hover/active/disabled 三态 */
.c-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  border: 1px solid var(--silver);
  background-color: var(--white);
  color: var(--gray-dark);
  transition: all 0.25s ease;
  font-family: inherit;
}

.c-btn:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.c-btn:active {
  transform: translateY(1px);
}

.c-btn.is-primary {
  background-color: var(--orange);
  border-color: var(--orange);
  color: var(--white);
}

.c-btn.is-primary:hover {
  background-color: var(--orange-light);
  border-color: var(--orange-light);
  color: var(--white);
}

.c-btn.is-disabled,
.c-btn:disabled {
  background-color: var(--silver) !important;
  color: var(--gray-light) !important;
  border-color: var(--silver) !important;
  cursor: not-allowed !important;
  transform: none;
}

/* ---------- 图标基类（原 iconfont 字体图标 → SVG sprite） ---------- */
.iconfont {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1em;
  height: 1em;
  line-height: 1;
  vertical-align: -0.125em;
  font-style: normal;
  flex: none;
}

.iconfont > svg,
.icon-svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
  display: block;
  pointer-events: none;
}

/* ---------- 通用动画 ---------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

@keyframes skeletonPulse {
  0% { background-position: 100% 50%; }
  100% { background-position: 0 50%; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---------- 原稿弹窗 / 加载 / 提示框基础样式（保留原 class 名） ---------- */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--white);
  border-radius: 8px;
  width: 500px;
  max-width: 90%;
  padding: 20px;
  box-shadow: var(--shadow-deep);
  position: relative;
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  font-size: 20px;
  cursor: pointer;
  color: var(--gray-dark);
}

.modal-close:hover {
  color: var(--orange);
}

.modal-title {
  font-size: 18px;
  color: var(--blue-deep);
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--silver);
}

.modal-body {
  margin-bottom: 20px;
  max-height: 60vh;
  overflow-y: auto;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--gray-dark);
  margin-bottom: 5px;
}

.form-group input,
.form-group select {
  width: 100%;
  height: 38px;
  border: 1px solid var(--silver);
  border-radius: 4px;
  padding: 0 10px;
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--orange);
}

.form-group.error input {
  border-color: #ff4d4f;
}

.form-tips {
  font-size: 12px;
  color: #ff4d4f;
  margin-top: 5px;
  display: none;
}

.form-group.error .form-tips {
  display: block;
}

.form-btn {
  width: 100%;
  background-color: var(--orange);
  color: var(--white);
  border: none;
  height: 40px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
}

.form-btn:hover {
  background-color: var(--orange-light);
}

.form-switch {
  text-align: center;
  margin-top: 15px;
  font-size: 14px;
}

.loading {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgba(0, 0, 0, 0.7);
  color: var(--white);
  padding: 15px 30px;
  border-radius: 4px;
  font-size: 16px;
  z-index: 9999;
  display: none;
}

.loading.active {
  display: block;
}

.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(0, 0, 0, 0.8);
  color: var(--white);
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 14px;
  z-index: 9999;
  display: none;
}

.toast.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.toast.success { background-color: #52c41a; }
.toast.error { background-color: #ff4d4f; }
.toast.warning { background-color: #faad14; }
.toast.info { background-color: #1890ff; }

/* ---------- u- 原子工具类 ---------- */
.u-hidden { display: none !important; }
.u-block { display: block !important; }
.u-flex { display: flex !important; }
.u-ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.u-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.u-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.u-mt-8 { margin-top: 8px; }
.u-mt-16 { margin-top: 16px; }
.u-mt-24 { margin-top: 24px; }
.u-mb-8 { margin-bottom: 8px; }
.u-mb-16 { margin-bottom: 16px; }
.u-mb-24 { margin-bottom: 24px; }
.u-mr-8 { margin-right: 8px; }
.u-ml-8 { margin-left: 8px; }
.u-gap-8 { gap: 8px; }
.u-gap-16 { gap: 16px; }
.u-text-center { text-align: center; }
.u-text-right { text-align: right; }
.u-text-orange { color: var(--orange); }
.u-text-blue { color: var(--blue-light); }
.u-text-gray { color: var(--gray-light); }
.u-text-bold { font-weight: 600; }
.u-full { width: 100%; }
.u-nowrap { white-space: nowrap; }
.u-relative { position: relative; }
.u-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 无障碍：焦点可见 ---------- */
:focus-visible {
  outline: 2px solid var(--blue-light);
  outline-offset: 2px;
}

/* 键盘操作用 div[role=button] 的默认外观复位 */
[role="button"] {
  cursor: pointer;
}

/* 降低动画偏好 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}