/* ===== 全局 ===== */
:root {
  --primary: #4f6ef7;
  --primary-dark: #3a56d4;
  --primary-light: #eef1ff;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --bg: #f4f6fb;
  --card-bg: #ffffff;
  --text: #1f2937;
  --text-secondary: #6b7280;
  --border: #e5e7eb;
  --radius: 14px;
  --shadow: 0 4px 20px rgba(31, 41, 55, 0.08);
  --shadow-lg: 0 8px 30px rgba(31, 41, 55, 0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ===== 顶部 ===== */
.app-header {
  background: linear-gradient(135deg, #4f6ef7, #7c3aed);
  color: #fff;
  padding: 18px 32px;
  box-shadow: var(--shadow-lg);
  position: sticky;
  top: 0;
  z-index: 100;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-dot {
  width: 46px; height: 46px;
  background: rgba(255,255,255,0.2);
  border-radius: 12px;
  position: relative;
}
.brand-dot::after {
  content: "📣";
  font-size: 22px;
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
.brand h1 { font-size: 20px; font-weight: 700; }
.brand p { font-size: 12px; opacity: 0.85; margin-top: 2px; }

/* 步骤指示器 */
.step-indicator { display: flex; align-items: center; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.step-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 14px;
  border-radius: 30px;
  opacity: 0.6;
  transition: all 0.3s;
  white-space: nowrap;
  font-size: 14px;
}
.step-item.active { opacity: 1; background: rgba(255,255,255,0.2); }
.step-num {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700;
}
.step-item.active .step-num { background: #fff; color: var(--primary); }
.step-arrow { width: 26px; height: 2px; background: rgba(255,255,255,0.4); }

/* ===== 主体 ===== */
.app { max-width: 1100px; margin: 0 auto; padding: 28px 20px 60px; }

.step-section { display: none; }
.step-section.active { display: block; animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
}
.card-header { margin-bottom: 22px; }
.card-header.between { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.card-header h2 { font-size: 20px; font-weight: 700; }
.card-sub { font-size: 13px; color: var(--text-secondary); margin-top: 6px; display: block; }

/* ===== 门店 ===== */
.store-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.store-card {
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.2s;
  background: #fff;
  position: relative;
}
.store-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.store-card.selected { border-color: var(--primary); background: var(--primary-light); }
.store-badge {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, #4f6ef7, #7c3aed);
  color: #fff; font-size: 22px; font-weight: 700;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.store-info { flex: 1; }
.store-name { font-weight: 700; font-size: 17px; }
.store-code { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }
.store-addr { font-size: 13px; color: var(--text); margin-top: 4px; }
.store-city { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }
.store-check {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2px solid var(--border);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}
.store-card.selected .store-check { background: var(--primary); border-color: var(--primary); }

/* ===== 按钮 ===== */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text); border: 2px solid var(--border); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { padding: 14px 34px; font-size: 16px; }

.form-actions { margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--border); }
.form-actions.between { display: flex; justify-content: space-between; gap: 12px; }
.form-actions:not(.between) { display: flex; justify-content: flex-end; }

/* ===== 表单 ===== */
.form-grid { display: grid; gap: 14px; }
.form-grid.two-col { grid-template-columns: 1fr 1fr; }
.form-grid.four-col { grid-template-columns: repeat(4, 1fr); }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field label { font-size: 13px; color: var(--text-secondary); font-weight: 600; }
.form-field input {
  padding: 11px 14px;
  border: 2px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}
.form-field input:focus { border-color: var(--primary); }
.field-hint { font-size: 11px; color: var(--text-muted, #9aa0ab); margin-top: 4px; line-height: 1.5; }
.date-options { display: flex; align-items: center; gap: 12px; }
.date-option {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 15px; color: var(--text); cursor: pointer; font-weight: 600; white-space: nowrap;
}
.date-option input { width: 16px; height: 16px; accent-color: var(--primary); cursor: pointer; }
.date-options input[type="date"] { flex: 1; min-width: 0; }

/* ===== 数据块 ===== */
.upload-block {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  background: #fdfdfe;
  margin-bottom: 20px;
}
.block-title { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 16px; }
.block-icon { font-size: 22px; }
.block-title h3 { font-size: 15px; font-weight: 700; }
.block-title p { font-size: 12px; color: var(--text-secondary); margin-top: 3px; line-height: 1.5; }

.upload-area {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 36px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  background: #fff;
}
.upload-area.small { padding: 22px 16px; }
.upload-area:hover, .upload-area.drag { border-color: var(--primary); background: var(--primary-light); }
.upload-icon { font-size: 36px; }
.upload-text { font-size: 14px; font-weight: 600; margin-top: 8px; }
.upload-hint { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

.file-chip {
  display: flex; align-items: center; gap: 10px;
  margin-top: 12px;
  background: var(--primary-light);
  border: 1px solid #e0e7ff;
  border-radius: 10px;
  padding: 10px 14px;
}
.chip-name { font-size: 13px; font-weight: 600; color: var(--text); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chip-status { font-size: 13px; color: var(--text-secondary); }
.chip-remove {
  border: none; background: transparent;
  font-size: 20px; line-height: 1;
  cursor: pointer; color: var(--text-secondary);
  padding: 0 4px;
}
.chip-remove:hover { color: var(--danger); }

/* 两客模式切换 */
.seg { display: flex; gap: 6px; background: var(--bg); padding: 5px; border-radius: 10px; width: fit-content; margin-bottom: 14px; }
.seg-btn {
  padding: 8px 20px; border: none; border-radius: 8px;
  background: transparent; font-size: 14px; font-weight: 600;
  cursor: pointer; color: var(--text-secondary); transition: all 0.2s;
}
.seg-btn.active { background: #fff; color: var(--primary); box-shadow: var(--shadow); }

/* ===== 结果 ===== */
.result-tools { display: flex; gap: 10px; }

/* 时段选择 */
.period-picker {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg);
  border-radius: 12px;
  padding: 12px 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.period-label { font-size: 14px; font-weight: 600; color: var(--text-secondary); }
.period-date { font-size: 13px; color: var(--primary); font-weight: 600; margin-left: auto; white-space: nowrap; }
.period-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.period-btn {
  padding: 10px 22px;
  border: 2px solid var(--border);
  border-radius: 30px;
  background: #fff;
  font-size: 15px; font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}
.period-btn:hover { border-color: var(--primary); color: var(--primary); }
.period-btn.active {
  background: linear-gradient(135deg, #4f6ef7, #7c3aed);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow);
}
.report-label { font-size: 15px; font-weight: 700; margin: 22px 0 12px; }
.report-text-wrap { background: var(--bg); border-radius: 12px; padding: 4px; }
.report-text {
  white-space: pre-wrap;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 15px;
  line-height: 1.9;
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  overflow-x: auto;
}

/* KPI */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; }
.kpi {
  background: var(--bg);
  border-radius: 12px;
  padding: 16px;
  border-left: 4px solid var(--primary);
  text-align: center;
}
.kpi-value { font-size: 24px; font-weight: 700; color: var(--text); }
.kpi-label { font-size: 13px; color: var(--text-secondary); margin-top: 6px; }
.kpi-sub { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }

.dashboard-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 20px;
  margin-top: 8px;
}
.dashboard-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  background: #fff;
}
.dashboard-card h4 { font-size: 14px; margin-bottom: 12px; }
.chart-box { width: 100%; height: 300px; }

/* 品类表 */
.cat-table { font-size: 14px; }
.cat-row {
  display: grid;
  grid-template-columns: 1fr 0.6fr 1fr 0.8fr;
  padding: 9px 6px;
  border-bottom: 1px solid #f0f0f0;
  gap: 8px;
}
.cat-row.head { font-weight: 700; background: var(--bg); border-radius: 8px; color: var(--text-secondary); font-size: 12px; }
.cat-row span:last-child { text-align: right; }
.cat-row span:nth-child(3) { text-align: right; }
.cat-row span:nth-child(2) { text-align: center; }

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 30px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text); color: #fff;
  padding: 12px 24px; border-radius: 10px; font-size: 14px;
  opacity: 0; pointer-events: none; transition: all 0.3s;
  z-index: 999; box-shadow: var(--shadow-lg);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .app-header { padding: 14px 18px; }
  .app { padding: 18px 12px 40px; }
  .card { padding: 18px; }
  .form-grid.two-col, .form-grid.four-col { grid-template-columns: 1fr; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .step-item { font-size: 12px; padding: 5px 10px; }
}