/* ============================================================
   含钼废钢历史价格查询系统 —— 前端样式
   设计系统：Data-Dense Dashboard（数据密集型仪表盘）
   配色：工业深炭灰 + 铜橙强调色（贴合钢铁/金属行业，规避蓝色主题）
   排版：Fira Sans / Fira Code，数据列使用等宽数字防布局偏移
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Fira+Sans:wght@300;400;500;600;700&display=swap');

/* ---------- 设计令牌（语义颜色） ---------- */
:root {
  --color-primary: #1E293B;        /* 深炭灰 - 主色 */
  --color-on-primary: #FFFFFF;
  --color-secondary: #475569;      /* 次级文字 */
  --color-accent: #B45309;         /* 铜橙 - 强调/CTA（金属行业语义） */
  --color-accent-hover: #92400E;
  --color-accent-soft: #FEF3C7;    /* 铜橙浅底 */
  --color-background: #F8FAFC;     /* 页面底色 */
  --color-surface: #FFFFFF;        /* 卡片表面 */
  --color-foreground: #0F172A;     /* 正文 */
  --color-muted: #F1F5F9;          /* 静默底 */
  --color-border: #E2E8F0;         /* 边框 */
  --color-border-strong: #CBD5E1;
  --color-success: #15803D;        /* 上涨/成功 */
  --color-success-soft: #DCFCE7;
  --color-danger: #DC2626;         /* 下跌/危险 */
  --color-danger-soft: #FEE2E2;
  --color-teal: #0D9488;           /* 图表次序列 */
  --color-ring: #B45309;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);

  --font-sans: 'Fira Sans', -apple-system, 'Segoe UI', 'Microsoft YaHei', sans-serif;
  --font-mono: 'Fira Code', 'SF Mono', Consolas, monospace;

  --transition: 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-foreground);
  background: var(--color-background);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 等宽数字用于价格/数据列，防止布局抖动（number-tabular 规则） */
.tnum, .num, table td.num, .stat-value, .calc-result-value {
  font-variant-numeric: tabular-nums;
  font-feature-settings: 'tnum';
}

a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-hover); }

button, input, select, textarea { font: inherit; color: inherit; }

img, svg { display: block; max-width: 100%; }

:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 2px;
}

/* ---------- 布局 ---------- */
.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

/* 顶部导航 */
.navbar {
  background: var(--color-primary);
  color: var(--color-on-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.navbar-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--color-on-primary);
  white-space: nowrap;
}
.brand:hover { color: var(--color-on-primary); }
.brand-icon {
  width: 30px; height: 30px;
  flex-shrink: 0;
  color: var(--color-accent);
}
.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
  margin-left: auto;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.nav-link:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.nav-link.active { color: #fff; background: var(--color-accent); }
.nav-link svg { width: 17px; height: 17px; flex-shrink: 0; }

/* 主内容区 */
.main {
  flex: 1;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 28px 24px 56px;
}

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.page-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-title svg { width: 24px; height: 24px; color: var(--color-accent); }
.page-subtitle {
  color: var(--color-secondary);
  font-size: 14px;
  margin-top: 4px;
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.card-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.card-title {
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-title svg { width: 18px; height: 18px; color: var(--color-accent); }
.card-body { padding: 22px; }

/* ---------- 表单控件 ---------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-secondary);
}
.field-hint {
  font-size: 12px;
  color: var(--color-secondary);
}
.input, .select, .textarea {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.textarea { height: auto; padding: 10px 12px; resize: vertical; min-height: 80px; }
.input:hover, .select:hover, .textarea:hover { border-color: var(--color-secondary); }
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}
.input::placeholder { color: #94A3B8; }
.input.error { border-color: var(--color-danger); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 40px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
  white-space: nowrap;
  user-select: none;
}
.btn svg { width: 16px; height: 16px; }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-hover); }
.btn-primary:disabled { background: #D1D5DB; color: #fff; cursor: not-allowed; transform: none; }
.btn-dark { background: var(--color-primary); color: #fff; }
.btn-dark:hover { background: #0F172A; }
.btn-outline { background: transparent; border-color: var(--color-border-strong); color: var(--color-foreground); }
.btn-outline:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #B91C1C; }
.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; }
.btn-icon { width: 40px; padding: 0; }

/* ---------- 筛选栏 ---------- */
.filter-bar {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.filter-bar .field { min-width: 160px; }
.filter-actions { display: flex; gap: 8px; }

/* ---------- 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
thead th {
  background: var(--color-muted);
  color: var(--color-secondary);
  font-weight: 600;
  text-align: left;
  padding: 11px 16px;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
  font-size: 13px;
  position: sticky;
  top: 0;
}
thead th.sortable { cursor: pointer; user-select: none; }
thead th.sortable:hover { color: var(--color-accent); }
tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}
tbody tr { transition: background var(--transition); }
tbody tr:hover { background: var(--color-muted); }
tbody tr:last-child td { border-bottom: none; }
.cell-num { text-align: right; font-family: var(--font-mono); }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.tag-success { background: var(--color-success-soft); color: var(--color-success); }
.tag-danger { background: var(--color-danger-soft); color: var(--color-danger); }
.tag-neutral { background: var(--color-muted); color: var(--color-secondary); }
/* 红涨绿跌（国内大宗商品习惯）：上涨红、下跌绿 */
.delta-up { color: var(--color-danger); font-weight: 600; }
.delta-down { color: var(--color-success); font-weight: 600; }

/* 档位价格单元格：紧凑显示价格+微环比 */
.tier-cell {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  line-height: 1.2;
}
.tier-price {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}
.tier-delta {
  font-size: 11.5px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.tier-delta.up { color: var(--color-danger); }
.tier-delta.down { color: var(--color-success); }
.tier-delta.flat { color: var(--color-muted); }
.tier-delta.na { color: var(--color-border); }

/* ---------- 分页 ---------- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  flex-wrap: wrap;
}
.page-info { font-size: 13px; color: var(--color-secondary); }
.page-btns { display: flex; gap: 4px; }
.page-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 8px;
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
}
.page-btn:hover:not(:disabled) { border-color: var(--color-accent); color: var(--color-accent); }
.page-btn.active { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---------- 统计卡片 ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.stat-material {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-secondary);
  margin-bottom: 2px;
  font-variant-numeric: tabular-nums;
}
.stat-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 16px 0;
}
.stat-row + .stat-row {
  border-top: 1px dashed var(--color-border);
}
.stat-row-label {
  font-size: 14px;
  color: var(--color-secondary);
  flex-shrink: 0;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.25;
}
.stat-row-month {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-secondary);
  opacity: 0.75;
}
.stat-row-value {
  font-size: 26px;
  font-weight: 700;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}
.stat-row-value-col {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  line-height: 1.2;
}
.stat-row-delta {
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.stat-row-delta.up { color: var(--color-danger); }
.stat-row-delta.down { color: var(--color-success); }
.stat-row-delta.flat { color: var(--color-secondary); opacity: 0.75; }
.stat-label {
  font-size: 13px;
  color: var(--color-secondary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}
.stat-label svg { width: 15px; height: 15px; }
.stat-value {
  font-size: 26px;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-top: 8px;
  letter-spacing: -0.01em;
}
.stat-unit { font-size: 13px; font-weight: 500; color: var(--color-secondary); margin-left: 4px; }
.stat-delta { font-size: 13px; margin-top: 6px; display: flex; align-items: center; gap: 4px; }

/* ---------- 走势图 ---------- */
.chart-toolbar {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.range-toggle {
  display: inline-flex;
  background: var(--color-muted);
  border-radius: var(--radius-sm);
  padding: 3px;
}
.range-toggle button {
  border: none;
  background: transparent;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 4px;
  cursor: pointer;
  color: var(--color-secondary);
  transition: all var(--transition);
}
.range-toggle button.active {
  background: var(--color-surface);
  color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}
.chart-canvas-wrap {
  position: relative;
  height: 380px;
  width: 100%;
}
.chart-canvas-wrap.compact { height: 280px; }

/* ---------- 测算工具 ---------- */
.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}
.calc-form { display: flex; flex-direction: column; gap: 16px; }
.result-panel {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0F172A 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
}
.result-panel::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
  opacity: 0.25;
}
.result-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
}
.result-total {
  font-size: 42px;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-top: 8px;
  letter-spacing: -0.02em;
}
.result-unit { font-size: 18px; font-weight: 500; color: rgba(255,255,255,0.7); }
.result-ex-tax {
  display: none;
  margin-top: 10px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px dashed rgba(255, 255, 255, 0.25);
  border-radius: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.85);
}
.result-ex-tax-label { opacity: 0.75; }
.result-ex-tax-value {
  float: right;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  color: #FCD34D;
}
.result-breakdown {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.breakdown-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
}
.breakdown-label { color: rgba(255, 255, 255, 0.7); }
.breakdown-value { font-family: var(--font-mono); font-weight: 600; }
.result-formula {
  margin-top: 18px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  font-family: var(--font-mono);
  position: relative;
  z-index: 1;
}

/* ---------- 后台管理 ---------- */
.admin-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  align-items: start;
}
.admin-side {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 12px;
  position: sticky;
  top: 84px;
  box-shadow: var(--shadow-sm);
}
.admin-side-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-secondary);
  transition: all var(--transition);
  width: 100%;
  border: none;
  background: transparent;
  text-align: left;
}
.admin-side-link:hover { background: var(--color-muted); color: var(--color-foreground); }
.admin-side-link.active { background: var(--color-accent-soft); color: var(--color-accent); }
.admin-side-link svg { width: 17px; height: 17px; flex-shrink: 0; }
.admin-main { min-width: 0; }

.apikey-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-accent-soft);
  border: 1px solid #FCD34D;
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 13px;
}
.apikey-bar svg { width: 18px; height: 18px; color: var(--color-accent); flex-shrink: 0; }
.apikey-bar input { flex: 1; height: 32px; }

/* ---------- 模态框 ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(2px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}
.modal-overlay.open { display: flex; animation: fade-in 180ms ease-out; }
.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 460px;
  max-height: 90vh;
  overflow-y: auto;
  animation: modal-in 220ms cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-title { font-size: 17px; font-weight: 600; }
.modal-close {
  width: 32px; height: 32px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.modal-close:hover { background: var(--color-muted); color: var(--color-foreground); }
.modal-close svg { width: 18px; height: 18px; }
.modal-body { padding: 22px; display: flex; flex-direction: column; gap: 16px; }
.modal-footer {
  padding: 16px 22px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* ---------- Toast ---------- */
.toast-container {
  position: fixed;
  top: 76px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 12px 16px;
  box-shadow: var(--shadow);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 260px;
  max-width: 380px;
  pointer-events: auto;
  animation: toast-in 220ms cubic-bezier(0.16, 1, 0.3, 1);
}
.toast svg { width: 18px; height: 18px; flex-shrink: 0; }
.toast.success { border-left-color: var(--color-success); }
.toast.success svg { color: var(--color-success); }
.toast.error { border-left-color: var(--color-danger); }
.toast.error svg { color: var(--color-danger); }
.toast.info svg { color: var(--color-accent); }
.toast.leaving { animation: toast-out 180ms ease-in forwards; }

/* ---------- 空状态 / 加载 ---------- */
.empty-state, .loading-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--color-secondary);
}
.empty-state svg, .loading-state svg { width: 48px; height: 48px; margin: 0 auto 12px; opacity: 0.4; }
.empty-state .empty-title { font-size: 16px; font-weight: 600; color: var(--color-foreground); margin-bottom: 4px; }
.spinner {
  width: 28px; height: 28px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto 12px;
}
.skeleton {
  background: linear-gradient(90deg, var(--color-muted) 25%, var(--color-border) 50%, var(--color-muted) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius-sm);
}

/* ---------- 页脚 ---------- */
.footer {
  text-align: center;
  padding: 20px;
  color: var(--color-secondary);
  font-size: 12px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

/* ---------- 动画 ---------- */
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes modal-in { from { opacity: 0; transform: translateY(12px) scale(0.97); } to { opacity: 1; transform: none; } }
@keyframes toast-in { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateX(20px); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes shimmer { to { background-position: -200% 0; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .calc-layout { grid-template-columns: 1fr; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-side { position: static; display: flex; gap: 4px; overflow-x: auto; }
  .admin-side-link { white-space: nowrap; }
}
@media (max-width: 768px) {
  .navbar-inner { padding: 0 16px; gap: 12px; height: 54px; }
  .brand { font-size: 15px; }
  .brand-icon { width: 26px; height: 26px; }
  .nav-link span { display: none; }
  .nav-link { padding: 8px 10px; }
  .nav-link svg { width: 19px; height: 19px; }
  .main { padding: 20px 16px 40px; }
  .page-title { font-size: 20px; }
  .filter-bar .field { min-width: 100%; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .chart-canvas-wrap { height: 300px; }
  .result-total { font-size: 34px; }
  .toast-container { right: 16px; left: 16px; top: 66px; }
  .toast { max-width: none; }
}
@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr; }
  .card-body { padding: 16px; }
  .card-header { padding: 14px 16px; }
}

/* ---------- 料型选择 Tab（优化版：分段式 + 44px 触摸区 + 单行简称·全称） ---------- */
.material-tab-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  row-gap: 12px;
}

/* 分组标签：左侧铜橙竖条 + 中文名称（放在分组容器内） */
.material-tab-group-label {
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-secondary);
  white-space: nowrap;
  flex-shrink: 0;
  line-height: 1;
}
.material-tab-group-label::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 14px;
  border-radius: 2px;
  background: var(--color-accent);
  margin-right: 8px;
  flex-shrink: 0;
}

/* 外层分组容器（含钼废钢 Tab 组 + 其他料型下拉组 共用） */
.material-tab-group,
.material-select-wrap {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px 8px 12px;
  background: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

/* Tab 按钮内组（便于和标签在一行） */
.material-tab-inner-group {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* 每个 Tab：44px 高，横向「简称 · 全称」（touch-target-size 44×44 规则） */
.material-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-secondary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  transition:
    background-color var(--transition),
    border-color var(--transition),
    color var(--transition),
    box-shadow var(--transition),
    transform 120ms ease;
  white-space: nowrap;
  user-select: none;
  touch-action: manipulation;
}
.mt-code {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
}
.mt-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.45;
  flex-shrink: 0;
}
.mt-name {
  font-weight: 400;
  font-size: 12.5px;
  opacity: 0.75;
}

/* Hover（仅桌面端有细腻的悬停光晕） */
@media (hover: hover) {
  .material-tab:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-soft);
  }
}
.material-tab:hover .mt-dot { opacity: 0.8; }
.material-tab:hover .mt-name { opacity: 0.9; }

/* Active 选中：铜橙渐变 + 白字 + 实心底阴影 */
.material-tab.active {
  border-color: var(--color-accent);
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: #fff;
  box-shadow: 0 2px 6px rgba(180, 83, 9, 0.25), inset 0 -1px 0 rgba(0,0,0,0.12);
}
.material-tab.active .mt-dot {
  background: rgba(255,255,255,0.9);
  opacity: 1;
  width: 4px;
  height: 4px;
}
.material-tab.active .mt-name { opacity: 0.92; }

/* Pressed 按下反馈（仅位移 1px，稳定不抖布局） */
.material-tab:active {
  transform: translateY(1px);
}
.material-tab:active:not(.active) {
  background: var(--color-accent-soft);
}

/* 键盘焦点：可见轮廓（无障碍） */
.material-tab:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 2px;
}

/* ---------- 其他料型 下拉：44px 高 + 自定义箭头 ---------- */
.material-select {
  font-size: 13.5px;
  cursor: pointer;
  min-height: 44px;
  padding: 0 14px 0 12px;
  background: var(--color-surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") no-repeat right 10px center / 16px 16px;
  appearance: none;
  -webkit-appearance: none;
  padding-right: 38px;
}
.material-select:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--color-surface);
}
.material-select:focus {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23B45309' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
}

/* ---------- 响应式分级：768px（平板/窄笔记本）→ 紧凑化不隐藏标签 ---------- */
@media (max-width: 768px) {
  .material-tab-bar { gap: 12px; }
  .material-tab-group, .material-select-wrap { padding: 6px 8px 6px 10px; gap: 10px; }
  .material-tab-inner-group { gap: 6px; }
  .material-tab { min-height: 42px; padding: 0 14px; }
  .material-select { min-height: 42px; font-size: 13px; min-width: 180px !important; }
  .material-tab-group-label { font-size: 12.5px; }
  .mt-name { font-size: 11.5px; }
}

/* ---------- 响应式分级：560px（手机）→ 隐藏标签与全称，仅保留简称 ---------- */
@media (max-width: 560px) {
  .material-tab-group,
  .material-select-wrap {
    width: 100%;
    padding: 5px;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }
  /* 分组标签隐藏（节省空间） */
  .material-tab-group-label { display: none; }
  /* 只保留 Tab 简称 */
  .material-tab-inner-group { flex-wrap: nowrap; }
  .material-tab {
    min-height: 40px;
    padding: 0 12px;
    flex-shrink: 0;
    font-size: 13px;
  }
  .mt-name { display: none; }
  .mt-dot  { display: none; }
  .material-select {
    min-width: 0 !important;
    width: 100% !important;
    min-height: 40px;
  }
}