/* ============================================
   表单组件样式
   ============================================ */

/* 表单容器 */
.contact-form-wrap {
  background: white;
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--gray-200);
}

/* 表单标题 */
.contact-form h3 {
  font-size: 20px; font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 24px;
}

/* 表单行 - 双列布局 */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* 表单组 */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13px; font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 14px;
  color: var(--gray-800);
  transition: border-color var(--transition);
  background: var(--gray-50);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--li-blue);
  background: white;
}
.form-group textarea { resize: vertical; }

/* 表单备注 */
.form-note {
  text-align: center;
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 12px;
}

/* 提交成功提示（默认隐藏） */
.form-success {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px;
  min-height: 300px;
  display: none;
}
.form-success.visible {
  display: flex;
}
.hidden { display: none !important; }
.success-icon { font-size: 48px; margin-bottom: 16px; }
.form-success h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; }
.form-success p { color: var(--gray-600); font-size: 15px; }

/* 提交按钮加载状态 */
.btn.loading {
  pointer-events: none;
  color: transparent !important;
}

/* 涟漪点击效果（script.js createRipple 使用） */
.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: ripple-animation 0.6s ease-out;
  pointer-events: none;
}
@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}
.btn-loading-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: white;
  z-index: 1;
}

/* 提交按钮加载动画 */
.btn-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: btn-spin .6s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
  flex-shrink: 0;
}
@keyframes btn-spin {
  to { transform: rotate(360deg); }
}

/* 响应式：表单行改为单列 */
@media (max-width: 768px) {
  .form-row { grid-template-columns: 1fr; }
}