* { box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', 'PingFang SC', 'Microsoft Yahei', sans-serif; background: #f6f7f9; color: #222; margin: 0; }
.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }
h1 { font-size: 22px; margin: 8px 0 16px; }
.card { background: #fff; border-radius: 10px; padding: 16px; margin: 12px 0; box-shadow: 0 2px 8px rgba(0,0,0,0.06); overflow-x: auto; }
.card h2 { margin: 0 0 12px; font-size: 16px; }
.row { display: flex; align-items: center; gap: 12px; margin: 8px 0; }
label { width: 180px; color: #555; }
input, select { flex: 1; padding: 6px 8px; border: 1px solid #ddd; border-radius: 6px; min-width: 0; }
.equip-grid { display: grid; grid-template-columns: repeat(1, minmax(0, 1fr)); gap: 8px; }
@media (min-width: 700px) { .equip-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.slot-card { border: 1px solid #eee; border-radius: 8px; padding: 10px; }
.slot-title { font-weight: 600; color: #444; margin-bottom: 8px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 8px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 8px; }
button { background: #1f6feb; color: #fff; border: none; padding: 10px 16px; border-radius: 8px; cursor: pointer; }
button:hover { background: #115bd4; }
.actions { display: flex; justify-content: flex-end; }
#result table { width: 100%; border-collapse: collapse; margin-top: 8px; }
#result th, #result td { border: 1px solid #eee; padding: 8px; text-align: right; }
#result th { background: #fafafa; text-align: left; }
.summary { font-weight: 700; }
.note { color: #666; font-size: 12px; margin-top: 8px; }

/* Modal overlay */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: none; z-index: 9998; }
.modal { position: fixed; inset: 0; display: none; align-items: center; justify-content: center; z-index: 9999; }
.modal .modal-body { background: #fff; border-radius: 12px; max-width: 900px; width: 92vw; max-height: 88vh; overflow: auto; box-shadow: 0 10px 30px rgba(0,0,0,.2); padding: 16px; }
.modal .modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.modal .close-btn { background: #eef1f5; color: #333; border: 1px solid #dde3ea; border-radius: 8px; padding: 6px 10px; cursor: pointer; }

/* Mobile tweaks */
@media (max-width: 640px) {
  .container { padding: 0 12px; }
  label { width: 120px; }
  .row { flex-wrap: wrap; }
  input, select, button { font-size: 16px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  h1 { font-size: 20px; }
  .card h2 { font-size: 15px; }
}