:root {
  --primary: #c0392b;
  --primary-dark: #96281b;
  --bg: #f5f2ee;
  --card: #fff;
  --text: #333;
  --border: #ddd;
  --warn: #e67e22;
  --success: #27ae60;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

.header {
  background: var(--primary);
  color: #fff;
  padding: 12px 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
}

.header h1 { font-size: 18px; margin-bottom: 8px; }

.header nav { display: flex; gap: 12px; flex-wrap: wrap; }

.header nav a {
  color: rgba(255,255,255,.85);
  text-decoration: none;
  font-size: 14px;
  padding: 4px 8px;
  border-radius: 4px;
}

.header nav a.active,
.header nav a:hover { background: rgba(255,255,255,.2); color: #fff; }

.container { max-width: 1200px; margin: 0 auto; padding: 16px; }

.card {
  background: var(--card);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}

.card h2 { font-size: 16px; margin-bottom: 12px; color: var(--primary); }

.hint { color: #666; font-size: 13px; margin-bottom: 16px; }

.form-row { margin-bottom: 12px; }
.form-row label { display: block; font-size: 13px; color: #666; margin-bottom: 4px; }
.form-row input, .form-row select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
}

.form-row.inline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.upload-area {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  margin: 16px 0;
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.upload-area:hover { border-color: var(--primary); background: #fafafa; }

.upload-icon { font-size: 48px; display: block; margin-bottom: 8px; }

.preview-image { max-width: 100%; max-height: 300px; border-radius: 8px; }

.hidden { display: none !important; }

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-size: 15px;
  cursor: pointer;
  transition: background .2s;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.btn-secondary { background: #eee; color: #333; margin-top: 8px; }
.btn-success { background: var(--success); color: #fff; }
.btn-block { width: 100%; margin-top: 12px; }
.btn-danger { background: #e74c3c; color: #fff; padding: 4px 8px; font-size: 12px; }

.progress { margin: 16px 0; }
.progress-bar { height: 8px; background: #eee; border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--primary); width: 0; transition: width .3s; }

.table-wrap { overflow-x: auto; margin: 12px 0; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 900px;
}

.data-table th, .data-table td {
  border: 1px solid var(--border);
  padding: 6px 8px;
  text-align: center;
}

.data-table th { background: #f8f4f0; color: var(--primary); white-space: nowrap; }

.data-table input, .data-table select {
  width: 100%;
  min-width: 60px;
  padding: 4px 6px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 13px;
}

.data-table input:focus, .data-table select:focus {
  border-color: var(--primary);
  outline: none;
  background: #fffef5;
}

.data-table tr.review td { background: #fff8e1; }
.data-table tr.review input { border-color: var(--warn); }

.totals {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  padding: 12px 0;
  font-size: 15px;
}

.totals strong { color: var(--primary); font-size: 18px; }

.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 12px; }

.orders-list { display: flex; flex-direction: column; gap: 10px; }

.order-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.order-item:hover { border-color: var(--primary); }

.order-item .meta { font-size: 13px; color: #666; }

.search-bar { display: flex; gap: 8px; margin-bottom: 16px; }
.search-bar input { flex: 1; padding: 10px; border: 1px solid var(--border); border-radius: 6px; }

.calc-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
  margin-bottom: 16px;
}

.calc-form input, .calc-form select { padding: 10px; border: 1px solid var(--border); border-radius: 6px; }

.calc-result {
  background: #f8f4f0;
  padding: 12px;
  border-radius: 6px;
  font-size: 14px;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,.8);
  color: #fff;
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 14px;
  z-index: 999;
}

@media (max-width: 767px) {
  .header h1 { font-size: 16px; }
  .container { padding: 12px; }
  .form-row.inline { grid-template-columns: 1fr 1fr; }
  .actions .btn { flex: 1; }
}