/**
 * 表单控件统一样式系统
 * 赛事管理系统 - 所有表单控件的统一样式
 * 设计理念：自然、现代、统一
 * 更新日期: 2026-01-20
 */

/* ============================================
   1. 全局表单样式变量
   ============================================ */
:root {
  /* 表单控件配色 */
  --form-bg: #ffffff;
  --form-border: #d1d5db;
  --form-border-hover: #9ca3af;
  --form-border-focus: #4f46e5;
  --form-text: #1e293b;
  --form-placeholder: #9ca3af;
  --form-disabled-bg: #f3f4f6;
  --form-disabled-text: #9ca3af;
  
  /* 表单控件尺寸 */
  --form-height: 38px;
  --form-height-sm: 32px;
  --form-height-lg: 44px;
  --form-padding: 10px 12px;
  --form-padding-sm: 6px 10px;
  --form-padding-lg: 12px 16px;
  
  /* 表单控件圆角 */
  --form-radius: 8px;
  --form-radius-sm: 6px;
  --form-radius-lg: 10px;
}

/* ============================================
   2. 输入框基础样式
   ============================================ */
.form-control,
input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="search"],
input[type="date"],
input[type="time"],
input[type="datetime-local"],
textarea,
select {
  height: var(--form-height);
  padding: var(--form-padding);
  font-size: 14px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.5;
  color: var(--form-text);
  background-color: var(--form-bg);
  background-image: none;
  border: 1px solid var(--form-border);
  border-radius: var(--form-radius);
  transition: all 0.3s ease;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

/* 输入框占位符样式 */
.form-control::placeholder,
input::placeholder,
textarea::placeholder {
  color: var(--form-placeholder);
  opacity: 1;
}

/* 输入框悬停状态 */
.form-control:hover,
input[type="text"]:hover,
input[type="password"]:hover,
input[type="email"]:hover,
input[type="number"]:hover,
input[type="tel"]:hover,
input[type="url"]:hover,
input[type="search"]:hover,
input[type="date"]:hover,
input[type="time"]:hover,
textarea:hover,
select:hover {
  border-color: var(--form-border-hover);
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.08);
}

/* 输入框聚焦状态 */
.form-control:focus,
input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="search"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--form-border-focus);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1), 0 2px 4px 0 rgba(0, 0, 0, 0.05);
}

/* 输入框禁用状态 */
.form-control:disabled,
.form-control[readonly],
input:disabled,
input[readonly],
textarea:disabled,
textarea[readonly],
select:disabled {
  background-color: var(--form-disabled-bg);
  color: var(--form-disabled-text);
  cursor: not-allowed;
  opacity: 0.6;
}

/* ============================================
   3. 文本域特殊样式
   ============================================ */
textarea.form-control,
textarea {
  height: auto;
  min-height: 80px;
  resize: vertical;
  padding: 10px 12px;
  line-height: 1.6;
}

/* ============================================
   4. 下拉框样式
   ============================================ */
select.form-control,
select {
  padding-right: 36px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 12px;
  cursor: pointer;
}

select.form-control:hover,
select:hover {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%234f46e5' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
}

/* 多选下拉框 */
select[multiple].form-control,
select[multiple] {
  height: auto;
  padding: 8px;
  background-image: none;
}

select[multiple] option {
  padding: 6px 10px;
  border-radius: 4px;
  margin-bottom: 2px;
}

/* ============================================
   5. 单选框和复选框样式
   ============================================ */

/* 单选框容器 */
.radio,
.checkbox {
  position: relative;
  display: block;
  margin-top: 10px;
  margin-bottom: 10px;
}

.radio label,
.checkbox label {
  min-height: 20px;
  padding-left: 28px;
  margin-bottom: 0;
  font-weight: normal;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  color: var(--form-text);
  transition: color 0.2s ease;
}

.radio label:hover,
.checkbox label:hover {
  color: var(--form-border-focus);
}

/* 隐藏原生单选框和复选框 */
input[type="radio"],
input[type="checkbox"] {
  position: absolute;
  margin-left: -28px;
  margin-top: 0;
  opacity: 0;
}

/* 自定义单选框外观 */
input[type="radio"] + label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  border: 2px solid var(--form-border);
  border-radius: 50%;
  background: var(--form-bg);
  transition: all 0.3s ease;
}

input[type="radio"]:checked + label::before {
  border-color: var(--form-border-focus);
  background: var(--form-border-focus);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

input[type="radio"]:checked + label::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: white;
}

input[type="radio"]:hover + label::before {
  border-color: var(--form-border-hover);
}

input[type="radio"]:focus + label::before {
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

input[type="radio"]:disabled + label::before {
  background-color: var(--form-disabled-bg);
  border-color: var(--form-border);
  opacity: 0.5;
}

input[type="radio"]:disabled + label {
  color: var(--form-disabled-text);
  cursor: not-allowed;
}

/* 自定义复选框外观 */
input[type="checkbox"] + label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  border: 2px solid var(--form-border);
  border-radius: 4px;
  background: var(--form-bg);
  transition: all 0.3s ease;
}

input[type="checkbox"]:checked + label::before {
  border-color: var(--form-border-focus);
  background: var(--form-border-focus);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

input[type="checkbox"]:checked + label::after {
  content: '';
  position: absolute;
  left: 3px;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
}

input[type="checkbox"]:hover + label::before {
  border-color: var(--form-border-hover);
}

input[type="checkbox"]:focus + label::before {
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

input[type="checkbox"]:disabled + label::before {
  background-color: var(--form-disabled-bg);
  border-color: var(--form-border);
  opacity: 0.5;
}

input[type="checkbox"]:disabled + label {
  color: var(--form-disabled-text);
  cursor: not-allowed;
}

/* 内联单选框和复选框 */
.radio-inline,
.checkbox-inline {
  position: relative;
  display: inline-block;
  padding-left: 28px;
  margin-bottom: 0;
  font-weight: normal;
  vertical-align: middle;
  cursor: pointer;
  margin-right: 16px;
}

.radio-inline input[type="radio"],
.checkbox-inline input[type="checkbox"] {
  position: absolute;
  margin-left: -28px;
  opacity: 0;
}

/* ============================================
   6. 输入框组合样式
   ============================================ */
.input-group {
  position: relative;
  display: flex;
  width: 100%;
}

.input-group .form-control {
  position: relative;
  flex: 1 1 auto;
  width: 1%;
  margin-bottom: 0;
}

.input-group-addon,
.input-group-btn {
  white-space: nowrap;
  vertical-align: middle;
}

.input-group-addon {
  padding: var(--form-padding);
  font-size: 14px;
  font-weight: normal;
  line-height: 1.5;
  color: var(--form-text);
  text-align: center;
  background-color: var(--slate-100);
  border: 1px solid var(--form-border);
  border-radius: var(--form-radius);
  transition: all 0.3s ease;
}

.input-group .form-control:first-child,
.input-group-addon:first-child,
.input-group-btn:first-child > .btn {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.input-group .form-control:last-child,
.input-group-addon:last-child,
.input-group-btn:last-child > .btn {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.input-group-addon:not(:first-child):not(:last-child),
.input-group-btn:not(:first-child):not(:last-child),
.input-group .form-control:not(:first-child):not(:last-child) {
  border-radius: 0;
}

.input-group-btn {
  position: relative;
  font-size: 0;
  white-space: nowrap;
}

.input-group-btn > .btn {
  position: relative;
  height: var(--form-height);
}

.input-group-btn:not(:last-child) > .btn {
  border-right: 0;
}

.input-group-btn:not(:first-child) > .btn {
  border-left: 0;
}

/* ============================================
   7. 表单尺寸变体
   ============================================ */

/* 小尺寸 */
.form-control-sm,
.input-group-sm > .form-control,
.input-group-sm > .input-group-addon,
.input-group-sm > .input-group-btn > .btn {
  height: var(--form-height-sm);
  padding: var(--form-padding-sm);
  font-size: 13px;
  border-radius: var(--form-radius-sm);
}

/* 大尺寸 */
.form-control-lg,
.input-group-lg > .form-control,
.input-group-lg > .input-group-addon,
.input-group-lg > .input-group-btn > .btn {
  height: var(--form-height-lg);
  padding: var(--form-padding-lg);
  font-size: 16px;
  border-radius: var(--form-radius-lg);
}

/* ============================================
   8. 表单验证状态样式
   ============================================ */

/* 成功状态 */
.has-success .form-control {
  border-color: var(--success);
}

.has-success .form-control:focus {
  border-color: var(--success);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.has-success .control-label,
.has-success .help-block {
  color: var(--success);
}

/* 警告状态 */
.has-warning .form-control {
  border-color: var(--warning);
}

.has-warning .form-control:focus {
  border-color: var(--warning);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

.has-warning .control-label,
.has-warning .help-block {
  color: var(--warning);
}

/* 错误状态 */
.has-error .form-control {
  border-color: var(--danger);
}

.has-error .form-control:focus {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.has-error .control-label,
.has-error .help-block {
  color: var(--danger);
}

/* ============================================
   9. 表单标签样式
   ============================================ */
label,
.control-label {
  display: inline-block;
  max-width: 100%;
  margin-bottom: 6px;
  font-weight: 600;
  color: var(--slate-700);
  font-size: 14px;
}

.help-block {
  display: block;
  margin-top: 5px;
  margin-bottom: 10px;
  color: var(--slate-600);
  font-size: 13px;
}

/* ============================================
   10. 表单组样式
   ============================================ */
.form-group {
  margin-bottom: 18px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-horizontal .form-group {
  margin-left: -15px;
  margin-right: -15px;
}

.form-horizontal .control-label {
  text-align: right;
  padding-top: 10px;
}

/* ============================================
   11. 文件上传样式
   ============================================ */
input[type="file"] {
  display: block;
  width: 100%;
}

.file-input-wrapper {
  position: relative;
  overflow: hidden;
  display: inline-block;
}

.file-input-wrapper input[type="file"] {
  position: absolute;
  top: 0;
  right: 0;
  margin: 0;
  padding: 0;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  filter: alpha(opacity=0);
}

.file-input-wrapper .btn-file {
  display: inline-block;
  padding: var(--form-padding);
  cursor: pointer;
}

/* ============================================
   12. 搜索框特殊样式
   ============================================ */
input[type="search"] {
  -webkit-appearance: none;
  box-sizing: border-box;
}

.search-box {
  position: relative;
}

.search-box input[type="search"],
.search-box input[type="text"] {
  padding-right: 40px;
}

.search-box .search-icon {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--slate-400);
  pointer-events: none;
}

/* ============================================
   13. 开关按钮样式
   ============================================ */
.switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--slate-300);
  transition: 0.3s;
  border-radius: 24px;
}

.switch-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.3s;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.switch input:checked + .switch-slider {
  background-color: var(--primary-600);
}

.switch input:focus + .switch-slider {
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.switch input:checked + .switch-slider:before {
  transform: translateX(24px);
}

.switch input:disabled + .switch-slider {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   14. 响应式优化
   ============================================ */
@media (max-width: 768px) {
  .form-horizontal .control-label {
    text-align: left;
    padding-top: 0;
    margin-bottom: 6px;
  }
  
  .radio-inline,
  .checkbox-inline {
    display: block;
    margin-bottom: 8px;
  }
  
  .input-group-btn > .btn {
    font-size: 13px;
  }
}

/* ============================================
   15. 打印样式优化
   ============================================ */
@media print {
  .form-control,
  input,
  textarea,
  select {
    border: 1px solid #000;
    box-shadow: none;
  }
  
  input[type="radio"] + label::before,
  input[type="checkbox"] + label::before {
    border: 1px solid #000;
  }
}

/* ============================================
   16. 浏览器兼容性修复
   ============================================ */

/* IE 10+ */
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
  select.form-control,
  select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    padding-right: 36px;
  }
}

/* Firefox */
@-moz-document url-prefix() {
  select.form-control,
  select {
    background-position: right 10px center;
  }
}