/* ============================================================
   BORSUP — คำนวณราคา (Big, simple, mobile-first for 50+)
   ============================================================ */
.pricing-big { max-width: 560px; margin: 0 auto; }

.pb-header { text-align: center; margin-bottom: 20px; }
.pb-title { font-size: 32px; font-weight: 700; color: var(--text-900); margin: 0; letter-spacing: -.01em; }
.pb-subtitle { font-size: 16px; color: var(--text-500); margin: 8px 0 0; }

.pb-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px; box-shadow: var(--sh-sm); margin-bottom: 18px; }

.pb-step { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.pb-step-num { width: 38px; height: 38px; border-radius: 50%; background: linear-gradient(145deg, var(--gold-400), var(--gold-600)); color: var(--ink-900); display: grid; place-items: center; font-family: var(--font-head); font-weight: 700; font-size: 20px; flex-shrink: 0; }
.pb-step-label { font-size: 20px; font-weight: 700; color: var(--text-900); }

/* Cost input with steppers */
.pb-cost-row { display: flex; align-items: stretch; gap: 12px; }
.pb-stepper { width: 68px; flex-shrink: 0; border: 2px solid var(--line); background: var(--surface-2); border-radius: var(--r-md); font-size: 38px; font-weight: 600; color: var(--ink-900); line-height: 1; transition: all .15s; display: grid; place-items: center; }
.pb-stepper:hover { border-color: var(--gold-400); background: var(--gold-tint); }
.pb-stepper:active { transform: scale(.95); background: var(--gold-100); }
.pb-cost-input { flex: 1; display: flex; align-items: center; gap: 6px; border: 2px solid var(--line); border-radius: var(--r-md); padding: 0 16px; background: var(--surface); transition: all .15s; min-width: 0; }
.pb-cost-input:focus-within { border-color: var(--gold-400); box-shadow: 0 0 0 4px rgba(191,155,73,.15); }
.pb-baht { font-size: 30px; color: var(--text-400); font-weight: 600; flex-shrink: 0; }
.pb-cost-input input { border: none; outline: none; background: none; font-size: 40px; font-weight: 700; color: var(--text-900); width: 100%; padding: 14px 0; text-align: right; min-width: 0; }
.pb-cost-input input::-webkit-outer-spin-button, .pb-cost-input input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.pb-hint-row { font-size: 13.5px; color: var(--text-400); margin-top: 12px; text-align: center; }

/* Margin big buttons */
.pb-margin-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.pb-margin-btn { padding: 20px 0; border: 2px solid var(--line); background: var(--surface); border-radius: var(--r-md); font-size: 26px; font-weight: 700; color: var(--text-700); font-variant-numeric: tabular-nums; transition: all .15s; }
.pb-margin-btn:hover { border-color: var(--gold-300); }
.pb-margin-btn:active { transform: scale(.97); }
.pb-margin-btn.active { background: linear-gradient(145deg, var(--gold-400), var(--gold-600)); border-color: var(--gold-600); color: var(--ink-900); box-shadow: var(--sh-gold); }
.pb-margin-custom { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 16px; font-size: 16px; color: var(--text-500); }
/* Collapsed margin bar */
.pb-margin-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.pb-margin-now { display: flex; align-items: center; gap: 12px; }
.pb-margin-now-val { font-size: 30px; font-weight: 700; color: var(--gold-600); font-family: var(--font-head); }
.pb-margin-toggle { display: inline-flex; align-items: center; gap: 6px; padding: 11px 16px; border: 2px solid var(--line); border-radius: var(--r-md); background: var(--surface-2); color: var(--text-700); font-size: 15px; font-weight: 700; transition: all .15s; }
.pb-margin-toggle:hover { border-color: var(--gold-400); color: var(--ink-900); background: var(--gold-tint); }
.pb-margin-reveal { margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); animation: fadeIn .2s ease; }
.pb-margin-input { width: 90px; padding: 12px; border: 2px solid var(--line); border-radius: var(--r-sm); font-size: 22px; font-weight: 700; text-align: center; color: var(--text-900); background: var(--surface); }
.pb-margin-input:focus { outline: none; border-color: var(--gold-400); }

/* Result panel */
.pb-result { background: linear-gradient(135deg, var(--ink-800), var(--ink-900)); border-radius: var(--r-lg); padding: 30px 24px; text-align: center; color: #fff; position: relative; overflow: hidden; box-shadow: var(--sh-md); margin-bottom: 22px; }
.pb-result::after { content: ""; position: absolute; top: -30%; right: -15%; width: 280px; height: 280px; border-radius: 50%; background: radial-gradient(circle, rgba(191,155,73,.3), transparent 65%); pointer-events: none; }
.pb-result > * { position: relative; z-index: 1; }
.pb-result-label { font-size: 16px; color: var(--gold-300); letter-spacing: .1em; font-weight: 600; }
.pb-result-price { font-size: 72px; font-weight: 700; font-family: var(--font-head); line-height: 1.05; margin: 6px 0; letter-spacing: -.02em; }
.pb-result-formula { font-size: 16px; color: #aeb6c0; line-height: 1.7; margin-bottom: 14px; }
.pb-result-formula b { color: var(--gold-300); }
.pb-result-profit { display: inline-flex; align-items: center; gap: 7px; font-size: 18px; font-weight: 700; color: #fff; background: rgba(47,125,84,.3); border: 1px solid rgba(94,234,212,.25); padding: 9px 18px; border-radius: 30px; }
.pb-result-profit svg { color: #5eead4; }
.pb-save-btn { display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%; margin-top: 22px; padding: 18px; border: none; border-radius: var(--r-md); background: linear-gradient(135deg, var(--gold-400), var(--gold-600)); color: var(--ink-900); font-size: 19px; font-weight: 700; box-shadow: var(--sh-gold); transition: all .15s; }
.pb-save-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(159,123,50,.4); }
.pb-save-btn:active { transform: translateY(0); }

/* Saved list */
.pb-saved { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--sh-sm); overflow: hidden; }
.pb-saved-head { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 20px 22px; border: none; background: none; font-size: 19px; font-weight: 700; color: var(--text-900); }
.pb-saved-body { padding: 0 16px 16px; display: flex; flex-direction: column; gap: 10px; }
.pb-add-row { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 15px; border: 2px dashed var(--gold-300); border-radius: var(--r-md); background: var(--gold-tint); color: var(--gold-600); font-size: 16px; font-weight: 700; transition: all .15s; }
.pb-add-row:hover { border-color: var(--gold-500); background: var(--gold-100); }
.pb-empty { text-align: center; color: var(--text-400); font-size: 15px; padding: 16px; }
.pb-saved-card { display: flex; align-items: center; gap: 12px; width: 100%; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--surface); transition: all .15s; text-align: left; }
.pb-saved-card:hover { border-color: var(--gold-300); background: var(--gold-tint); transform: translateX(2px); }
.pb-saved-info { flex: 1; min-width: 0; }
.pb-saved-name { font-size: 17px; font-weight: 700; color: var(--text-900); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pb-saved-meta { font-size: 14px; color: var(--text-500); margin-top: 3px; }
.pb-saved-price { font-size: 26px; font-weight: 700; color: var(--gold-600); font-family: var(--font-head); flex-shrink: 0; }

@media (max-width: 600px) {
  .pricing-big { max-width: 100%; }
  .pb-title { font-size: 27px; }
  .pb-result-price { font-size: 60px; }
  .pb-stepper { width: 60px; font-size: 34px; }
  .pb-cost-input input { font-size: 34px; }
  .pb-margin-btn { font-size: 23px; padding: 18px 0; }
}

/* Mobile-first (≤768px): ปุ่ม +/- และช่องกรอกใหญ่ ≥48px + ราคาขายลอยติดล่างจอ */
@media (max-width: 768px) {
  .pb-card { padding: 16px; margin-bottom: 14px; }
  .pb-step { margin-bottom: 14px; }
  .pb-step-label { font-size: 18px; }

  /* ปุ่ม +/- และช่องกรอกตัวเลข ขั้นต่ำ 56px กดด้วยนิ้วโป้งง่าย */
  .pb-cost-row { gap: 10px; }
  .pb-stepper { width: 60px; min-height: 60px; font-size: 36px; }
  .pb-cost-input { padding: 0 12px; }
  .pb-cost-input input { font-size: 32px; padding: 14px 0; min-height: 56px; }
  .pb-baht { font-size: 24px; }
  .pb-margin-now-val { font-size: 26px; }
  .pb-margin-toggle { min-height: 48px; }
  .pb-margin-btn { min-height: 56px; }

  /* ราคาขายที่แนะนำ: ลอยติดด้านล่างจอตลอด เห็นราคาแม้คีย์บอร์ดเด้งขึ้น */
  .pb-result {
    position: sticky; bottom: 8px; z-index: 30;
    padding: 18px; margin-bottom: 14px;
    box-shadow: 0 -8px 28px rgba(20,24,29,.28), var(--sh-md);
  }
  .pb-result-price { font-size: 50px; margin: 2px 0; }
  .pb-result-formula { font-size: 14px; line-height: 1.6; margin-bottom: 10px; }
  .pb-result-profit { font-size: 16px; padding: 8px 16px; }
  .pb-save-btn { margin-top: 14px; padding: 15px; font-size: 18px; }
}