/* ============================================================
   面料搭配计算器 - 专用样式
   依赖 main.css 提供的基础设计系统
   ============================================================ */

/* ---- 计算器两栏布局 ---- */
.calc-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: var(--space-xl);
  align-items: start;
}

/* ---- 计算器卡片（覆盖/补充 main.css 的 .card） ---- */
.calc-layout .card {
  box-shadow: var(--shadow-sm);
  display: block;
}

.calc-layout .card:hover {
  transform: none;
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-soft);
}

.calc-layout .card-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.calc-layout .card-title {
  font-family: var(--font-serif);
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.calc-layout .card-title-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.calc-layout .card-body {
  padding: var(--space-lg);
}

/* ---- 表单控件 ---- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-select, .form-input {
  width: 100%;
  padding: 12px 14px;
  font-size: var(--font-base);
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg-card);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236D4C41' d='M6 8L1 3h10z'/%3E/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.form-select:hover, .form-input:hover {
  border-color: var(--color-accent);
}

.form-select:focus, .form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.form-input {
  background-image: none;
  padding-right: 14px;
  cursor: text;
}

/* ---- 委托信息卡片 ---- */
.commission-info {
  background: linear-gradient(135deg, var(--color-bg-soft), var(--color-bg-card));
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-top: var(--space-md);
}

.commission-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px dashed var(--color-border-soft);
}

.commission-info-row:last-child {
  border-bottom: none;
}

.commission-info-label {
  font-size: var(--font-sm);
  color: var(--color-text-muted);
}

.commission-info-value {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--color-text);
}

/* 难度星星 */
.difficulty-stars {
  display: inline-flex;
  gap: 2px;
  color: var(--color-accent);
}

/* ---- 风格要求条 ---- */
.style-req-item {
  margin-bottom: var(--space-md);
}

.style-req-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.style-req-name {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.style-req-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.style-req-target {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--color-text-muted);
}

/* 进度条 */
.progress-bar {
  height: 8px;
  background: var(--color-bg-soft);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 4px;
  transition: width var(--transition-slow) ease;
}

/* ---- 计算器按钮（补充 main.css） ---- */
.calc-layout .btn {
  padding: 12px 24px;
}

.calc-layout .btn-lg {
  padding: 16px 28px;
  font-size: var(--font-md);
}

.calc-layout .btn-block {
  width: 100%;
}

.calc-layout .btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ---- 结果区域 ---- */
.results-area {
  min-height: 400px;
}

.results-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl);
  text-align: center;
  color: var(--color-text-muted);
}

.results-empty-icon {
  font-size: 64px;
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.results-empty h3 {
  font-family: var(--font-serif);
  font-size: var(--font-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.results-empty p {
  font-size: var(--font-sm);
}

/* ---- 结果Tab ---- */
.results-tabs {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm);
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.tab-btn {
  flex: 1;
  padding: 10px 16px;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
}

.tab-btn:hover {
  color: var(--color-primary);
}

.tab-btn.active {
  background: var(--color-bg-card);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* ---- 方案卡片 ---- */
.solution-card {
  background: var(--color-bg-card);
  border: 2px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  transition: all var(--transition-base);
  animation: slideIn 0.4s ease;
}

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

.solution-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.solution-card.recommended {
  border-color: var(--color-primary);
  background: linear-gradient(135deg, #FFFBF5, #FFF8F0);
}

.solution-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-md);
}

.solution-rank {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: var(--font-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.solution-rank.gold {
  background: linear-gradient(135deg, #D4A574, #B8860B);
}

.solution-rank.silver {
  background: linear-gradient(135deg, #9E9E9E, #757575);
}

.solution-rank.bronze {
  background: linear-gradient(135deg, #A1887F, #795548);
}

.solution-price {
  font-family: var(--font-serif);
  font-size: var(--font-2xl);
  font-weight: 700;
  color: var(--color-primary);
}

.solution-price .price-label {
  font-size: var(--font-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  display: block;
  text-align: right;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ---- 面料列表 ---- */
.fabric-list {
  margin: var(--space-md) 0;
}

.fabric-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  border-bottom: 1px dashed var(--color-border-soft);
}

.fabric-item:last-child {
  border-bottom: none;
}

.fabric-list .fabric-swatch {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-border);
  flex-shrink: 0;
  position: relative;
}

.fabric-list .fabric-swatch::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 4px,
    rgba(255,255,255,0.1) 4px,
    rgba(255,255,255,0.1) 8px
  );
  border-radius: inherit;
}

.fabric-info {
  flex: 1;
  min-width: 0;
}

.fabric-name {
  font-size: var(--font-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.fabric-series {
  font-size: var(--font-xs);
  color: var(--color-text-muted);
}

.fabric-qty-price {
  text-align: right;
  flex-shrink: 0;
}

.fabric-qty {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.fabric-subtotal {
  font-size: var(--font-xs);
  color: var(--color-text-muted);
}

/* ---- 风格得分对比 ---- */
.style-score-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.style-score-item {
  background: var(--color-bg-soft);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.style-score-item.met {
  background: var(--color-success-soft);
}

.style-score-item.met .style-score-value {
  color: var(--color-success);
}

.style-score-label {
  font-size: var(--font-xs);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.style-score-value {
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--color-text);
}

.style-score-target {
  font-size: var(--font-xs);
  font-weight: 400;
  color: var(--color-text-muted);
}

/* ---- 品质/预算指标 ---- */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-soft);
}

.metric-item {
  text-align: center;
}

.metric-value {
  font-family: var(--font-serif);
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--color-text);
}

.metric-value.success {
  color: var(--color-success);
}

.metric-value.warning {
  color: var(--color-warning);
}

.metric-value.danger {
  color: var(--color-danger);
}

.metric-label {
  font-size: var(--font-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ---- 标签 / 徽章 ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.badge-success {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.badge-warning {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.badge-danger {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.badge-info {
  background: var(--color-info-soft);
  color: var(--color-info);
}

/* ---- 滑块 ---- */
.slider-container {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.slider-input {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--color-bg-soft);
  border-radius: 3px;
  outline: none;
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: 3px solid white;
  box-shadow: 0 2px 6px rgba(139, 69, 19, 0.3);
  transition: transform var(--transition-fast);
}

.slider-input::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

.slider-value {
  font-family: var(--font-serif);
  font-size: var(--font-md);
  font-weight: 700;
  color: var(--color-primary);
  min-width: 70px;
  text-align: right;
}

/* ---- 加载动画 ---- */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl);
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-bg-soft);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ---- 响应式 ---- */
@media (max-width: 960px) {
  .calc-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .style-score-grid {
    grid-template-columns: 1fr;
  }
  
  .metrics-row {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .calc-layout .card-header,
  .calc-layout .card-body {
    padding: var(--space-md);
  }
}