:root{
  --bg:#f5f6f8; --card:#fff; --text:#1d2129; --muted:#6b7280; --line:#e5e7eb; --line-2:#d1d5db;
  --brand:#ef7d12; --brand-h:#dc6c06; --brand-soft:#fff6ec; --brand-text:#b85500;
  --ok:#11804a; --ok-bg:#ecf8f1; --err:#c4320a; --err-bg:#fff1ec; --wait:#6b7280; --wait-bg:#f1f2f4;
  --r:12px; --r-sm:10px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 "IBM Plex Sans Thai",system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--brand-text)}
h1,h2,h3{margin:0;font-weight:600}
.ic{width:18px;height:18px;flex:none}
.hint{color:var(--muted);font-size:13px;margin:6px 0 0}
.center{text-align:center}

/* ---------- top bar ---------- */
.topbar{background:#fff;border-bottom:1px solid var(--line)}
.topbar-in{max-width:560px;margin:0 auto;padding:0 16px;height:60px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:17px}
.brand img{width:32px;height:32px;display:block}
.who{display:flex;align-items:center;gap:6px;min-width:0}
.who-name{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--muted);min-width:0}
.who-name span{color:var(--text);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:140px}
.who-name .ic{width:16px;height:16px}
.nav-btn{display:inline-flex;align-items:center;gap:6px;background:none;border:1px solid var(--line);color:var(--muted);font:inherit;font-size:13px;padding:5px 11px;border-radius:8px;cursor:pointer;margin-left:6px}
.nav-btn:hover{color:var(--text);border-color:var(--line-2)}
.nav-btn .ic{width:15px;height:15px}

/* ---------- page ---------- */
.page{max-width:560px;margin:0 auto;padding:24px 16px 8px}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.page-head h1{font-size:24px;line-height:1.3}
.balance{font-size:14px;color:var(--muted)}
.balance b{color:var(--text);font-weight:600;font-size:16px;margin-left:4px;transition:color .4s}
.balance b.bump{color:var(--ok)}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.card + .card{margin-top:16px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.card-head h2{font-size:16px}
.rate{font-size:13px;color:var(--muted)}

/* ---------- packages ---------- */
.packs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.pack{display:flex;flex-direction:column;align-items:center;gap:0;padding:12px 6px;background:#fff;border:1.5px solid var(--line);border-radius:var(--r-sm);font:inherit;color:inherit;cursor:pointer;transition:border-color .15s,background .15s}
.pack:hover{border-color:var(--line-2)}
.pack-price{font-size:19px;font-weight:600;line-height:1.35}
.pack-price small{font-size:13px;font-weight:400;color:var(--muted)}
.pack-pts{font-size:12.5px;color:var(--muted)}
.pack.active{border-color:var(--brand);background:var(--brand-soft)}
.pack.active .pack-pts{color:var(--brand-text)}

.custom{margin-top:12px}
.custom summary{display:inline-block;cursor:pointer;color:var(--brand-text);font-size:14px;padding:2px 0;list-style:none}
.custom summary::-webkit-details-marker{display:none}
.custom summary::after{content:" ›"}
.custom[open] summary::after{content:""}
.custom .field{margin-top:8px}
.field{display:flex;align-items:center;border:1.5px solid var(--line);border-radius:var(--r-sm);background:#fff;transition:border-color .15s,box-shadow .15s}
.field:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(239,125,18,.15)}
.field input{flex:1;min-width:0;border:0;outline:0;background:transparent;padding:11px 14px;font:inherit;font-size:17px;color:inherit}
.suffix{padding-right:14px;color:var(--muted)}
input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
input[type=number]{-moz-appearance:textfield}

/* ---------- summary + pay ---------- */
.summary{margin:18px 0 16px;padding:12px 0 0;border-top:1px solid var(--line)}
.summary div{display:flex;justify-content:space-between;align-items:baseline;padding:4px 0}
.summary dt{color:var(--muted);font-size:14px}
.summary dd{margin:0;font-weight:600;font-size:16px;white-space:nowrap}
.summary dd.get{color:var(--brand-text)}
.summary dd.light{font-weight:400;font-size:14px;color:var(--muted)}

.btn{display:block;width:100%;padding:13px 16px;border:0;border-radius:var(--r-sm);background:var(--brand);color:#fff;font:inherit;font-size:16px;font-weight:600;cursor:pointer;transition:background .15s}
.btn:hover:not(:disabled){background:var(--brand-h)}
.btn:disabled{background:#e3e5e9;color:#9ca1ab;cursor:not-allowed}
.btn:focus-visible,.pack:focus-visible,.nav-btn:focus-visible,.custom summary:focus-visible,.help:focus-visible,.link-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.pay-note{margin:12px 0 0;text-align:center;font-size:12.5px;color:var(--muted);line-height:1.6}
.pay-note .ic{width:13px;height:13px;vertical-align:-2px;margin-right:4px}

/* ---------- success banner ---------- */
.done{display:flex;align-items:center;gap:12px;background:var(--ok-bg);border:1px solid #c3e8d3;border-radius:var(--r);padding:12px 12px 12px 14px;margin-bottom:16px;animation:pop .3s ease-out}
.done[hidden]{display:none}
.done-ic{width:32px;height:32px;border-radius:50%;background:var(--ok);color:#fff;display:flex;align-items:center;justify-content:center;flex:none}
.done-ic .ic circle{display:none}
.done-txt{flex:1;min-width:0}
.done-txt b{display:block;color:var(--ok);font-size:15px}
.done-txt span{font-size:13.5px;color:#2f4a3b}
.done-x{background:none;border:0;font-size:22px;line-height:1;color:#7a9b88;cursor:pointer;padding:4px 6px}
@keyframes pop{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- history ---------- */
.history{padding-bottom:8px}
.history .card-head{margin-bottom:4px}
.link-btn{display:inline-flex;align-items:center;gap:4px;background:none;border:0;padding:4px 0;color:var(--muted);font:inherit;font-size:13px;cursor:pointer}
.link-btn:hover{color:var(--text)}
.link-btn .ic{width:14px;height:14px}
.history-list{list-style:none;margin:0;padding:0}
.history-item{display:flex;align-items:center;gap:12px;padding:11px 0;border-top:1px solid var(--line)}
.history-item:first-child{border-top:0}
.history-item.fresh{background:var(--ok-bg);margin:0 -20px;padding:11px 20px;animation:pop .3s ease-out}
.h-main{flex:1;min-width:0}
.h-amt{display:block;font-weight:500;font-size:14.5px}
.h-date{display:block;font-size:12.5px;color:var(--muted)}
.h-side{text-align:right;flex:none}
.h-pts{display:block;font-weight:600;font-size:14.5px}
.h-pts.ok{color:var(--ok)}
.h-pts.wait,.h-pts.bad{color:var(--muted)}
.h-chip{display:inline-block;font-size:11.5px;font-weight:500;padding:0 8px;border-radius:6px;margin-top:2px}
.h-chip.wait{background:var(--wait-bg);color:var(--wait)}
.h-chip.bad{background:var(--err-bg);color:var(--err)}
.history-empty{padding:16px 0 12px;text-align:center;color:var(--muted);font-size:14px}

/* ---------- help ---------- */
.help{display:flex;align-items:center;gap:10px;margin:16px 0;padding:12px 16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--muted);font-size:13.5px}
.help:hover{border-color:var(--line-2)}
.help > .ic{color:var(--brand-text)}
.help-txt{flex:1;min-width:0}
.help-txt b{color:var(--text);font-weight:500}
.help-go{font-size:22px;color:#c3c7cf;line-height:1}
.fine{color:#9aa0ab;font-size:12px;text-align:center;margin:0 8px}

/* ---------- login ---------- */
.auth{min-height:calc(100vh - 64px);display:flex;align-items:center;justify-content:center;padding:32px 16px}
.auth-card{width:100%;max-width:380px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px 24px 22px}
.auth-logo{display:block;width:72px;height:72px;margin:0 auto 10px}
.auth-card h1{font-size:21px;text-align:center}
.auth-sub{color:var(--muted);text-align:center;margin:2px 0 14px;font-size:14px}
.auth-card label{display:block;font-size:14px;font-weight:500;margin:12px 0 6px}
.auth-card input{width:100%;padding:11px 13px;border:1.5px solid var(--line);border-radius:var(--r-sm);font:inherit;font-size:16px;color:inherit;outline:0;transition:border-color .15s,box-shadow .15s}
.auth-card input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(239,125,18,.15)}
.auth-card .btn{margin-top:20px}
.auth-card .hint{margin-top:14px}

.foot{text-align:center;color:#9aa0ab;font-size:12px;padding:20px 16px 24px}

/* ---------- toast / modal / overlay ---------- */
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);opacity:0;pointer-events:none;width:max-content;max-width:calc(100% - 32px);padding:11px 16px;border-radius:10px;font-size:14.5px;transition:opacity .2s,transform .2s;z-index:50;box-shadow:0 8px 24px rgba(16,24,40,.16)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.error{color:#fff;background:#c4320a}
.toast.warning{color:#3b2a00;background:#ffd166}
.toast.success{color:#fff;background:var(--ok)}

.modal{position:fixed;inset:0;background:rgba(16,18,24,.5);display:flex;align-items:center;justify-content:center;padding:16px;z-index:60}
.modal[hidden],.overlay[hidden]{display:none}
.modal-box{background:var(--card);border-radius:14px;padding:26px 22px 20px;width:100%;max-width:340px;text-align:center;box-shadow:0 20px 50px rgba(0,0,0,.2)}
.modal-icon{width:52px;height:52px;border-radius:50%;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:24px}
.modal-icon.success{background:var(--ok-bg);color:var(--ok)}
.modal-icon.error{background:var(--err-bg);color:var(--err)}
.modal-icon.info{background:var(--brand-soft);color:var(--brand-text)}
.modal-box h3{font-size:18px}
.modal-box p{color:var(--muted);margin:6px 0 20px;font-size:14.5px}

.overlay{position:fixed;inset:0;background:rgba(255,255,255,.92);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;z-index:70;padding:16px;text-align:center}
.overlay p{margin:0;font-size:16px;font-weight:500}
.spinner{width:38px;height:38px;border:3px solid var(--line);border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

@media (max-width:420px){
  .nav-btn span{display:none}
  .nav-btn{padding:6px 8px}
  .card{padding:16px}
  .history-item.fresh{margin:0 -16px;padding:11px 16px}
  .pack-price{font-size:17px}
  .page-head h1{font-size:22px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation-duration:1ms!important}}

/* ---------- หน้าจ่ายเงินบนเว็บเรา (Stripe Payment Element) ---------- */
.summary.top{margin:0 0 16px;padding:0 0 12px;border-top:0;border-bottom:1px solid var(--line)}
.pe{min-height:120px;margin-bottom:16px}
.pe:empty{min-height:0;margin:0}
.pay-error{margin:-4px 0 14px;padding:10px 12px;border-radius:var(--r-sm);background:var(--err-bg);color:var(--err);font-size:14px}

/* ปุ่มกำลังโหลด */
.btn-spin{display:none;width:18px;height:18px;margin-right:10px;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;vertical-align:-3px;animation:spin .7s linear infinite}
.btn.loading .btn-spin{display:inline-block}
.btn.loading,.btn.loading:disabled{background:var(--brand);color:#fff;cursor:progress;opacity:.9}

/* ปุ่มกลับไปเปลี่ยนจำนวนเงิน */
.back-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 14px 6px 10px;border:1px solid var(--line-2);border-radius:999px;background:#fff;color:var(--text);font:inherit;font-size:13.5px;font-weight:500;cursor:pointer;transition:border-color .15s,background .15s,color .15s}
.back-btn .ic{width:16px;height:16px}
.back-btn:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-text)}
.back-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.back-btn:disabled{opacity:.5;cursor:not-allowed}

/* โครงระหว่างรอวิธีจ่ายโหลด */
.pe-skel{display:block;height:58px;border-radius:10px;margin-bottom:10px;background:linear-gradient(90deg,#f1f2f4 25%,#e7e9ed 50%,#f1f2f4 75%);background-size:200% 100%;animation:shimmer 1.2s ease-in-out infinite}
.pe-skel.tall{height:120px}
@keyframes shimmer{from{background-position:200% 0}to{background-position:-200% 0}}
@media (prefers-reduced-motion:reduce){.pe-skel,.btn-spin{animation-duration:3s}}