/**
 * Demo Modal CSS - 演示申请弹窗样式
 */

/* ========== 弹窗容器 ========== */
.demo-modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out),
              visibility var(--duration-normal) var(--ease-out);
}

.demo-modal.active {
  opacity: 1;
  visibility: visible;
}

/* 背景遮罩 */
.demo-modal-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* 弹窗主容器 */
.demo-modal-container {
  position: relative;
  width: 100%;
  max-width: 1000px;
  max-height: 90vh;
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transform: scale(0.9) translateY(20px);
  transition: transform var(--duration-normal) var(--ease-out-back);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.demo-modal.active .demo-modal-container {
  transform: scale(1) translateY(0);
}

/* 关闭按钮 */
.demo-modal-close {
  position: absolute;
  top: var(--spacing-4);
  right: var(--spacing-4);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  z-index: 10;
}

.demo-modal-close svg {
  width: 18px;
  height: 18px;
  color: var(--color-white);
}

.demo-modal-close:hover {
  background-color: var(--color-primary-hover);
  transform: rotate(90deg);
}

/* ========== 弹窗内容区域 ========== */
.demo-modal-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-height: 90vh;
  overflow-y: auto;
}

/* 左侧表单区域 */
.demo-modal-form-section {
  padding: var(--spacing-8);
  overflow-y: auto;
}

.demo-modal-form .form-group {
  margin-bottom: var(--spacing-4);
}

.demo-modal-form .form-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-black);
  margin-bottom: var(--spacing-2);
}

.demo-modal-form .form-input {
  padding: var(--spacing-3);
  font-size: var(--text-sm);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

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

.demo-modal-form .form-input::placeholder {
  color: var(--color-gray-400);
}

/* Radio 单选组 */
.demo-modal-radio-group {
  display: flex;
  gap: var(--spacing-8);
  margin-top: var(--spacing-2);
}

.demo-modal-radio {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-gray-700);
}

.demo-modal-radio input[type="radio"] {
  display: none;
}

.demo-modal-radio .radio-custom {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-gray-400);
  border-radius: var(--radius-full);
  position: relative;
  transition: border-color var(--transition-fast);
}

.demo-modal-radio input[type="radio"]:checked + .radio-custom {
  border-color: var(--color-primary);
}

.demo-modal-radio input[type="radio"]:checked + .radio-custom::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

/* Checkbox 复选框 */
.demo-modal-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-2);
  cursor: pointer;
  font-size: var(--text-xs);
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
}

.demo-modal-checkbox input[type="checkbox"] {
  display: none;
}

.demo-modal-checkbox .checkbox-custom {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-top: 2px;
  border: 2px solid var(--color-gray-400);
  border-radius: var(--radius-sm);
  position: relative;
  transition: all var(--transition-fast);
}

.demo-modal-checkbox input[type="checkbox"]:checked + .checkbox-custom {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.demo-modal-checkbox input[type="checkbox"]:checked + .checkbox-custom::after {
  content: '';
  position: absolute;
  top: 1px;
  left: 4px;
  width: 4px;
  height: 8px;
  border: solid var(--color-white);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.demo-modal-checkbox .checkbox-label a {
  color: var(--color-primary);
  text-decoration: underline;
}

.demo-modal-checkbox .checkbox-label a:hover {
  color: var(--color-primary-hover);
}

/* 提交按钮 */
.demo-modal-submit {
  width: 100%;
  margin-top: var(--spacing-4);
  padding: var(--spacing-4);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-full);
}

/* ========== 右侧信息区域 ========== */
.demo-modal-info-section {
  padding: var(--spacing-8);
  background-color: var(--color-gray-50);
  overflow-y: auto;
}

.demo-modal-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-black);
  line-height: var(--leading-snug);
  margin-bottom: var(--spacing-4);
}

.demo-modal-desc {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--spacing-6);
}

/* 功能特点列表 */
.demo-modal-features {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--spacing-8) 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.demo-modal-feature {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-black);
}

.demo-modal-feature .feature-check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.demo-modal-feature .feature-check svg {
  width: 14px;
  height: 14px;
  color: var(--color-white);
}

/* 合作伙伴区域 */
.demo-modal-partners {
  margin-top: var(--spacing-6);
}

.demo-modal-partners-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-black);
  margin-bottom: var(--spacing-4);
}

.demo-modal-partners-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-4);
}

.demo-modal-partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2);
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
  min-height: 48px;
}

.demo-modal-partner-logo img {
  max-width: 100%;
  max-height: 32px;
  object-fit: contain;
}

/* ========== 响应式样式 ========== */
@media (max-width: 991px) {
  .demo-modal-container {
    max-width: 600px;
  }
  
  .demo-modal-content {
    grid-template-columns: 1fr;
    max-height: 85vh;
  }
  
  .demo-modal-info-section {
    display: none;
  }
  
  .demo-modal-form-section {
    padding: var(--spacing-6);
  }
}

@media (max-width: 767px) {
  .demo-modal {
    padding: var(--spacing-2);
  }
  
  .demo-modal-container {
    max-height: 95vh;
    border-radius: var(--radius-lg);
  }
  
  .demo-modal-form-section {
    padding: var(--spacing-4);
    padding-top: var(--spacing-12);
  }
  
  .demo-modal-close {
    top: var(--spacing-2);
    right: var(--spacing-2);
    width: 32px;
    height: 32px;
  }
  
  .demo-modal-close svg {
    width: 16px;
    height: 16px;
  }
  
  .demo-modal-form .form-row {
    flex-direction: column;
    gap: 0;
  }
  
  .demo-modal-radio-group {
    gap: var(--spacing-6);
  }
}

/* ========== 动画效果 ========== */
/* 表单项逐个入场动画 */
.demo-modal.active .demo-modal-form .form-group {
  animation: fadeInUp 0.4s ease-out backwards;
}

.demo-modal.active .demo-modal-form .form-group:nth-child(1) { animation-delay: 0.1s; }
.demo-modal.active .demo-modal-form .form-group:nth-child(2) { animation-delay: 0.15s; }
.demo-modal.active .demo-modal-form .form-group:nth-child(3) { animation-delay: 0.2s; }
.demo-modal.active .demo-modal-form .form-group:nth-child(4) { animation-delay: 0.25s; }
.demo-modal.active .demo-modal-form .form-group:nth-child(5) { animation-delay: 0.3s; }
.demo-modal.active .demo-modal-form .form-group:nth-child(6) { animation-delay: 0.35s; }
.demo-modal.active .demo-modal-form .form-group:nth-child(7) { animation-delay: 0.4s; }
.demo-modal.active .demo-modal-form .form-group:nth-child(8) { animation-delay: 0.45s; }
.demo-modal.active .demo-modal-form .form-group:nth-child(9) { animation-delay: 0.5s; }

.demo-modal.active .demo-modal-submit {
  animation: fadeInUp 0.4s ease-out 0.55s backwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 右侧信息区域动画 */
.demo-modal.active .demo-modal-title,
.demo-modal.active .demo-modal-desc {
  animation: fadeInRight 0.5s ease-out backwards;
}

.demo-modal.active .demo-modal-title { animation-delay: 0.1s; }
.demo-modal.active .demo-modal-desc { animation-delay: 0.2s; }

.demo-modal.active .demo-modal-feature {
  animation: fadeInRight 0.4s ease-out backwards;
}

.demo-modal.active .demo-modal-feature:nth-child(1) { animation-delay: 0.3s; }
.demo-modal.active .demo-modal-feature:nth-child(2) { animation-delay: 0.35s; }
.demo-modal.active .demo-modal-feature:nth-child(3) { animation-delay: 0.4s; }
.demo-modal.active .demo-modal-feature:nth-child(4) { animation-delay: 0.45s; }

.demo-modal.active .demo-modal-partners {
  animation: fadeInUp 0.5s ease-out 0.5s backwards;
}

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

/* ========== 锁定滚动 ========== */
body.modal-open {
  overflow: hidden;
}