/* ═══════════════════════════════════════════════════════════════
   AI量化助手 — backtest-config.css
   📊 回测策略参数配置弹窗(深色奢华,视觉规范 §2 色板锁定)
   ═══════════════════════════════════════════════════════════════ */

/* ── 遮罩层 ───────────────────────────────────────────── */
#backtestConfigModal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 16px;
}

/* ── 弹窗卡片 ─────────────────────────────────────────── */
.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--gold);
  border-radius: 16px;
  padding: 20px;
  width: 100%;
  max-width: min(90vw, 420px);
  max-height: 85vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), var(--shadow-gold);
  animation: fadeInUp 0.3s ease-out;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.modal-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--gold);
}

.modal-close {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  font-family: inherit;
  line-height: 1;
}

@media (hover: hover) {
  .modal-close:hover {
    border-color: var(--gold);
    color: var(--gold);
    background: var(--gold-alpha-08);
  }
}

/* ── 表单行 ───────────────────────────────────────────── */
.form-row {
  display: flex;
  flex-direction: column;
  margin-bottom: 12px;
}

.form-row label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.form-row input,
.form-row select {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  background: var(--input-bg);
  color: var(--text-primary);
  border-radius: 8px;
  font-family: inherit;
  font-size: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-row input:focus,
.form-row select:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(201, 169, 110, 0.15);
  outline: none;
}

/* 双列行(短均线/长均线、起止日期) */
.form-row-2col {
  display: flex;
  gap: 8px;
}

.form-row-2col .form-row {
  flex: 1;
  margin-bottom: 12px;
}

/* ── 复选框组 ─────────────────────────────────────────── */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.checkbox-item input[type="checkbox"] {
  accent-color: var(--gold);
  width: 15px;
  height: 15px;
  cursor: pointer;
  margin: 0;
}

/* ── 底部按钮(语义对齐 .send-btn 默认/hover 态)───────── */
.form-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
}

.btn-cancel,
.btn-submit {
  padding: 9px 20px;
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s ease;
}

.btn-cancel {
  border: 1px solid var(--gold);
  background: transparent;
  color: var(--gold);
}

.btn-submit {
  border: 1px solid var(--gold);
  background: var(--gold);
  color: var(--bg-primary);
  font-weight: 600;
}

@media (hover: hover) {
  .btn-cancel:hover {
    background: var(--gold-alpha-08);
  }

  .btn-submit:hover {
    background: var(--gold-light);
    border-color: var(--gold-light);
  }
}

.btn-cancel:active,
.btn-submit:active {
  transform: scale(0.96);
}

/* ── 小屏适配(§6.3)──────────────────────────────────── */
@media (max-width: 380px) {
  .modal-content {
    padding: 14px;
  }

  .form-row input,
  .form-row select {
    font-size: 13px;
  }
}