/* Responsive UI (same as earlier, compacted) */
.tbt-wrapper{max-width:900px;margin:20px auto;background:#ffffff;border:1px solid #e5e7eb;border-radius:18px;padding:18px;box-shadow:0 2px 18px rgba(15,23,42,.06)}
.tbt-steps{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.tbt-step{position:relative;height:44px;border-radius:12px;background:#eef2ff;display:flex;align-items:center;justify-content:center;gap:8px;color:#374151;font-weight:600}
.tbt-step span{display:inline-flex;width:24px;height:24px;border-radius:50%;align-items:center;justify-content:center;background:#dbeafe}
.tbt-step em{font-style:normal;opacity:.8}
.tbt-step.active{background:#1d4ed8;color:#fff}
.tbt-step.active span{background:#fff;color:#1d4ed8}
.tbt-card{border:1px solid #e5e7eb;border-radius:16px;padding:16px;margin-bottom:10px;background:#fcfdff}
.tbt-row{margin-bottom:12px}
.tbt-row label{display:block;font-weight:600;margin-bottom:6px;color:#111827}
.tbt-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tbt-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.tbt-hidden{display:none}
.tbt-muted{color:#6b7280;font-size:12px}
.tbt-total{font-size:28px;font-weight:800;color:#0f172a}
.tbt-summary{display:flex;align-items:center;justify-content:space-between;background:#f8fafc;border:1px solid #e5e7eb;border-radius:14px;padding:12px;margin-top:16px}
.tbt-list{margin:0;padding-left:18px}
.tbt-switch{position:relative;display:inline-block;width:46px;height:26px;vertical-align:middle;margin-left:8px}
.tbt-switch input{display:none}
.tbt-switch span{position:absolute;cursor:pointer;background:#cfd8dc;border-radius:26px;top:0;left:0;right:0;bottom:0;transition:.2s}
.tbt-switch span:before{content:"";position:absolute;width:22px;height:22px;background:#fff;border-radius:50%;top:2px;left:2px;transition:.2s;box-shadow:0 1px 2px rgba(0,0,0,.2)}
.tbt-switch input:checked+span{background:#2563eb}
.tbt-switch input:checked+span:before{transform:translateX(20px)}
.tbt-actions{display:flex;align-items:center;gap:12px;justify-content:flex-end;margin-top:12px}
.tbt-terms{flex:1;text-align:right}
.tbt-transport-box{background:#f1f5f9;border:1px solid #e2e8f0;border-radius:12px;padding:10px;margin:8px 0}
.tbt-recap{background:#f8fafc;border:1px dashed #cbd5e1;border-radius:12px;padding:12px;margin-top:12px}
.tbt-recap-row{display:flex;flex-wrap:wrap;gap:10px}
.tbt-warning{padding:10px;background:#fff9c4;border:1px solid #ffe082;border-radius:8px}
.tbt-extra-item{display:inline-block;margin:4px 12px 4px 0}
.tbt-extra-pp{border:1px dashed #d1d5db;border-radius:10px;padding:8px;margin-bottom:6px;background:#fafafa}
.tbt-extra-head{font-weight:700;margin-bottom:4px}
.tbt-extra-qty{display:flex;gap:8px;align-items:center}
.tbt-extra-qty label{margin:0 4px 0 0;font-weight:600;font-size:12px}
.tbt-card input[type="text"], .tbt-card input[type="email"], .tbt-card input[type="date"], .tbt-card input[type="number"], .tbt-card textarea{
  width:100%;border:1px solid #e5e7eb;padding:10px;border-radius:10px;background:#fff;outline:none;transition:border-color .15s, box-shadow .15s;
}
.tbt-card input:focus, .tbt-card textarea:focus{border-color:#2563eb; box-shadow:0 0 0 3px rgba(37,99,235,.15)}
.button{background:#111827;color:#fff;border:none;padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:700}
.button.button-primary{background:#2563eb}
.button:disabled{opacity:.5;cursor:not-allowed}
#tbt5_submit{position:relative;display:inline-flex;align-items:center;gap:8px}
#tbt5_submit .tbt-spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:tbt-spin .8s linear infinite;display:none}
#tbt5_submit.is-loading .tbt-spinner{display:inline-block}
#tbt5_submit.is-loading .tbt-btn-text{opacity:.8}
@keyframes tbt-spin{to{transform:rotate(360deg)}}
.tbt-success-box{background:#ecfdf5;border:1px solid #34d399;color:#065f46;border-radius:10px;padding:10px;margin-top:10px}
.tbt-success-title{font-weight:800;margin-bottom:4px}
.tbt-error-box{background:#fef2f2;border:1px solid #fca5a5;color:#7f1d1d;border-radius:10px;padding:10px;margin-top:10px}
@media (max-width:800px){.tbt-grid-3{grid-template-columns:1fr}}
@media (max-width:640px){.tbt-grid-2{grid-template-columns:1fr} .tbt-summary{flex-direction:column;gap:8px;align-items:flex-start} .tbt-terms{text-align:left} .tbt-step{height:auto;padding:8px 6px}}