/* 表单区域 */
.form-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  position: relative;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--bg-surface);
  border: 2px solid var(--border-primary);
  border-radius: 16px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
  outline: none;
  font-family: inherit;
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
  background: var(--bg-secondary);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-help {
  margin-top: 0.5rem;
  padding: 0.75rem 1rem;
  background: rgba(37, 99, 235, 0.05);
  border: 1px solid rgba(37, 99, 235, 0.15);
  border-radius: 12px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.form-help a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.form-help a:hover {
  color: var(--primary-light);
  text-decoration: underline;
}

/* 简化按钮动画效果 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border: none;
  border-radius: 16px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 2px solid var(--border-primary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-secondary);
  border-color: var(--primary);
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.btn-full {
  width: 100%;
}

.btn-loading {
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  width: 1rem;
  height: 1rem;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-left: 0.5rem;
}

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

.btn-confirm {
  flex: 1;
  background: linear-gradient(135deg, var(--success), #059669);
  color: white;
  box-shadow: var(--shadow-md), 0 0 20px rgba(16, 185, 129, 0.3);
}

.btn-confirm:hover:not(:disabled) {
  box-shadow: var(--shadow-lg), 0 0 30px rgba(16, 185, 129, 0.4);
}

.btn-cancel {
  flex: 1;
}

/* 焦点样式 */
.btn:focus-visible,
.form-input:focus-visible,
.lang-select:focus-visible,
.nav-item:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}