/* ==========================================================================
   弹窗与交互模态系统 (Modals, Tabs, Slider Captcha, Upload)
   郑州子集智能科技有限公司 (Zhengzhou Subset Intelligent Technology Co., Ltd.)
   ========================================================================== */

/* 遮罩背景 */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(10, 24, 48, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}

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

/* 弹窗主体容器 */
.modal-container {
  background-color: var(--color-bg-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transform: translateY(20px) scale(0.98);
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* 关闭按钮 */
.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-main);
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal-close-btn:hover {
  background-color: #e5dfd5;
  color: var(--color-primary);
  transform: rotate(90deg);
}

/* 顶部双 Tab 切换栏 */
.modal-tabs-header {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg-surface);
  padding: 6px 12px 0;
  gap: 8px;
}

.modal-tab-btn {
  flex: 1;
  padding: 16px 14px;
  border: none;
  background: transparent;
  font-weight: 700;
  font-size: 0.96rem;
  color: var(--color-text-muted);
  cursor: pointer;
  position: relative;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  transition: all var(--transition-fast);
  text-align: center;
}

.modal-tab-btn.active {
  color: var(--color-primary);
  background-color: var(--color-bg-base);
  border: 1px solid var(--color-border);
  border-bottom-color: var(--color-bg-base);
  margin-bottom: -1px;
}

.modal-tab-btn.active::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background-color: var(--color-accent-blue);
  border-radius: var(--radius-pill) var(--radius-pill) 0 0;
}

.modal-tab-btn:hover:not(.active) {
  color: var(--color-primary);
  background-color: rgba(255, 255, 255, 0.4);
}

/* 弹窗内容滚动区 */
.modal-body {
  padding: 30px 36px 36px;
  overflow-y: auto;
  max-height: calc(90vh - 80px);
}

/* 表单组排版 */
.form-tab-panel {
  display: none;
}

.form-tab-panel.active {
  display: block;
}

.form-group {
  margin-bottom: 20px;
}

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

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.form-label .req {
  color: #e53e3e;
  margin-left: 2px;
}

.form-label .sub {
  font-size: 0.76rem;
  font-weight: normal;
  color: var(--color-text-muted);
  margin-left: 6px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  color: var(--color-text-main);
  transition: all var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--color-accent-blue);
  box-shadow: 0 0 0 3px rgba(0, 159, 232, 0.18);
}

textarea.form-control {
  min-height: 85px;
  resize: vertical;
}

/* 多选/单选 Tag 芯片组 */
.tag-select-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-select-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-fast);
}

.tag-select-pill input {
  display: none;
}

.tag-select-pill.active,
.tag-select-pill:has(input:checked) {
  background-color: rgba(0, 48, 115, 0.08);
  border-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: 700;
}

/* 文件上传拖拽交互框 */
.upload-dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  background-color: rgba(242, 239, 233, 0.5);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.upload-dropzone:hover,
.upload-dropzone.dragover {
  border-color: var(--color-accent-blue);
  background-color: rgba(0, 159, 232, 0.04);
}

.upload-icon {
  width: 36px;
  height: 36px;
  margin: 0 auto 10px;
  color: var(--color-primary);
}

.upload-text {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
}

.upload-hint {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.upload-file-display {
  display: none;
  margin-top: 10px;
  padding: 8px 12px;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.84rem;
  color: var(--color-primary);
  align-items: center;
  justify-content: space-between;
}

/* 合规勾选框与微文案 */
.form-agreement-box {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 18px 0;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.form-agreement-box input[type="checkbox"] {
  margin-top: 3px;
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-agreement-box a {
  color: var(--color-accent-blue);
  text-decoration: underline;
  cursor: pointer;
}

/* 滑动行为验证码 (CAPTCHA) */
.captcha-container {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  height: 44px;
  position: relative;
  overflow: hidden;
  margin-bottom: 20px;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.captcha-bg-text {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  font-weight: 600;
  pointer-events: none;
  z-index: 1;
}

.captcha-progress-bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  background: linear-gradient(90deg, rgba(0, 48, 115, 0.15) 0%, rgba(0, 159, 232, 0.3) 100%);
  pointer-events: none;
  transition: width 0.05s linear;
}

.captcha-slider-btn {
  position: absolute;
  left: 2px;
  top: 2px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 8px rgba(0, 48, 115, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  z-index: 2;
  color: var(--color-primary);
  transition: background-color 0.2s;
}

.captcha-slider-btn:active {
  cursor: grabbing;
}

.captcha-container.verified {
  background-color: rgba(56, 161, 105, 0.12);
  border-color: #38a169;
}

.captcha-container.verified .captcha-bg-text {
  color: #276749;
  font-weight: 700;
}

.captcha-container.verified .captcha-slider-btn {
  background-color: #38a169;
  color: #FFFFFF;
  cursor: default;
}

/* 提交按钮 */
.modal-submit-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--color-primary) 0%, #00459e 100%);
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 48, 115, 0.2);
  transition: all var(--transition-fast);
}

.modal-submit-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.modal-submit-btn:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 48, 115, 0.3);
}

/* 提交成功即时后置反馈区 (解锁白皮书直接下载) */
.modal-success-screen {
  display: none;
  text-align: center;
  padding: 30px 10px;
}

.success-icon-badge {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: rgba(56, 161, 105, 0.12);
  color: #38a169;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
}

.success-title {
  font-size: 1.45rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.success-desc {
  font-size: 0.96rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto 28px;
}

.whitepaper-download-card {
  background: var(--color-bg-card-warm);
  border: 1.5px solid var(--color-accent-gold);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  margin: 0 auto 24px;
  max-width: 460px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  box-shadow: var(--shadow-card);
}

.wp-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.wp-icon {
  width: 40px;
  height: 40px;
  color: #e53e3e;
}

.wp-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
}

.wp-meta {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

/* 法律合规独立弹窗专用样式 (隐私政策与法律声明) */
.modal-container.legal-modal-container {
  max-width: 680px;
  width: 92%;
}

.legal-modal-body {
  max-height: 65vh;
  overflow-y: auto;
  padding: 24px 32px;
  background-color: var(--color-bg-base);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.legal-modal-body::-webkit-scrollbar {
  width: 6px;
}

.legal-modal-body::-webkit-scrollbar-thumb {
  background-color: var(--color-border);
  border-radius: var(--radius-pill);
}

.legal-modal-footer {
  padding: 14px 28px;
  background-color: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.legal-modal-footer .btn {
  padding: 8px 24px;
  font-size: 0.92rem;
}

.legal-content-box {
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--color-text-main);
}

.legal-content-box h1.legal-title {
  font-family: var(--font-serif);
  font-size: 1.42rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.legal-meta-card {
  background-color: var(--color-bg-surface);
  border-left: 3.5px solid var(--color-accent-gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 10px 14px;
  margin-bottom: 18px;
  font-size: 0.84rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.legal-meta-card p {
  margin-bottom: 4px;
}

.legal-meta-card p:last-child {
  margin-bottom: 0;
}

.legal-content-box h4 {
  font-size: 1.05rem;
  color: var(--color-primary);
  margin: 22px 0 10px;
  font-weight: 700;
  padding-bottom: 4px;
  border-bottom: 1px dashed var(--color-border);
}

.legal-content-box p {
  margin-bottom: 12px;
}

.legal-content-box ol,
.legal-content-box ul {
  padding-left: 20px;
  margin-bottom: 14px;
}

.legal-content-box li {
  margin-bottom: 8px;
}

.legal-content-box strong {
  color: var(--color-primary);
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
  .modal-body {
    padding: 24px 20px;
  }
  .modal-tabs-header {
    flex-direction: column;
  }
}