*{box-sizing:border-box}
:root{
  --bg:#f7f7f5;
  --card:#fff;
  --text:#111111;
  --muted:#6b7280;
  --line:#e4e4e1;
  --primary:#FA6B31;
  --primary-soft:#fff1ea;
  --orange:#FA6B31;
  --green:#16a34a;
  --red:#dc2626;
  --shadow:0 18px 50px rgba(17,17,17,.08);
}
html,body{margin:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg)}
body{display:flex;justify-content:center}
button,input{font:inherit}
button{cursor:pointer}
.app-shell{width:100%;min-height:100vh;display:flex;justify-content:center;padding:18px}
.app-card{width:min(100%,560px);min-height:calc(100vh - 36px);background:var(--card);border-radius:28px;box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column}
.topbar{height:76px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #f0f0ee}
.brand{display:flex;align-items:center;gap:9px;font-size:22px;font-weight:900;letter-spacing:-.8px}
.brand-logo{width:39px;height:39px;object-fit:contain;display:block}
.brand-text{color:#111}
.brand-text b{color:var(--primary)}
.lang{border:0;background:transparent;color:#60748a;font-weight:700}
.content{padding:18px 28px 32px;display:flex;flex-direction:column;gap:22px}
.hero{text-align:center;padding:8px 0 4px}
.eyebrow{font-size:13px;font-weight:800;color:var(--primary);text-transform:uppercase;letter-spacing:.08em}
.title{font-size:28px;line-height:1.12;margin:7px 0 5px;font-weight:850;letter-spacing:-.8px}
.subtitle{margin:0;color:var(--muted);font-size:15px}
.account-code{font-weight:800;letter-spacing:.4px}
.summary{background:#fffaf7;border:1px solid #f5dfd3;border-radius:18px;padding:16px}
.row{display:flex;justify-content:space-between;gap:16px;align-items:center}
.label{font-size:13px;color:var(--muted);font-weight:700}
.value{font-weight:800}
.section-label{font-size:14px;font-weight:850;margin-bottom:10px}
.currency-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.currency-btn,.mode-card,.operator-card{border:1.5px solid var(--line);background:#fff;border-radius:16px;transition:.15s ease}
.currency-btn{padding:13px;font-weight:800}
.currency-btn.active,.mode-card.active,.operator-card.active{border-color:var(--primary);background:var(--primary-soft)}
.currency-btn:disabled{opacity:.35;cursor:not-allowed;background:#f7f7f8}
.amount-wrap{display:flex;align-items:center;border:1.5px solid var(--line);border-radius:16px;padding:0 15px;background:#fff}
.amount-wrap:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(111,61,245,.08)}
.amount-symbol{font-size:20px;font-weight:850;color:var(--muted)}
.amount-input{width:100%;border:0;outline:0;padding:15px 10px;font-size:25px;font-weight:850;background:transparent}
.mode-list{display:grid;gap:11px}
.mode-card{width:100%;padding:16px;text-align:left;display:flex;gap:13px;align-items:flex-start}
.mode-icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-size:20px;flex:none;background:#fff1ea;color:var(--primary)}
.mode-card.money .mode-icon{background:#fff4e8}
.mode-title{font-weight:850;margin-bottom:4px}
.mode-desc{font-size:13px;color:var(--muted);line-height:1.4}
.check{margin-left:auto;width:20px;height:20px;border:2px solid #d1d5db;border-radius:50%;flex:none}
.mode-card.active .check{border:6px solid var(--primary)}
.btn{width:100%;border:0;border-radius:16px;padding:15px 18px;font-weight:850;font-size:16px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:disabled{background:#e5e7eb;color:#a7adb7;cursor:not-allowed}
.btn-secondary{background:#fff;color:var(--primary);border:1.5px solid var(--primary)}
.btn-danger{background:#fff;color:var(--red);border:1.5px solid #fecaca}
.actions{display:grid;gap:10px}
.notice{font-size:13px;line-height:1.5;color:var(--muted);text-align:center}
.pin-box{display:flex;justify-content:center;gap:10px;margin:10px 0}
.pin-dot{width:52px;height:58px;border:1.5px solid var(--line);border-radius:13px;display:grid;place-items:center;text-align:center;font-size:22px;font-weight:900;outline:0;background:#fff;caret-color:transparent}
.pin-dot:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(111,61,245,.10)}
.pin-dot.filled{border-color:var(--primary);background:var(--primary-soft)}
.operators{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}
.operator-card{padding:13px 7px;text-align:center}
.operator-logo{height:34px;display:grid;place-items:center;font-weight:950;font-size:13px}
.operator-name{font-size:12px;font-weight:750;margin-top:5px}
.form-field{display:grid;gap:8px}
.form-input{width:100%;border:1.5px solid var(--line);border-radius:15px;padding:15px;outline:0}
.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(111,61,245,.08)}
.error{color:var(--red);font-size:13px}
.success-icon,.error-icon,.pending-icon{width:72px;height:72px;border-radius:50%;display:grid;place-items:center;font-size:32px;margin:10px auto 2px}
.success-icon{background:#eaf8ef;color:var(--green)}
.error-icon{background:#fff0f0;color:var(--red)}
.pending-icon{background:#fff1ea;color:var(--orange)}
.receipt{border:1px dashed #cfd3dc;border-radius:17px;padding:16px;background:#fff}
.receipt .row{padding:7px 0}
.divider{height:1px;background:var(--line)}
.footer{text-align:center;color:#b0b6c1;font-size:12px;padding:0 28px 24px;margin-top:auto}
.demo-bar{background:#fff8f3;border-top:1px solid #f5dfd3;padding:9px 14px;font-size:11px;color:#8a4a2b;text-align:center}
.scenarios{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.scenarios button{border:1px solid var(--line);background:#fff;border-radius:12px;padding:9px;font-size:11px;font-weight:750}

/* WEKA AKIBA visual identity */
.btn-primary{background:linear-gradient(135deg,#FA6B31,#ff9f18);box-shadow:0 8px 20px rgba(250,107,49,.20)}
.btn-primary:not(:disabled):hover{filter:brightness(.97);transform:translateY(-1px)}
.btn-secondary{color:#111;border-color:#FA6B31}
.btn-secondary:hover{background:#fff7f2}
.lang{color:#111}

.hidden{display:none!important}
@media(max-width:430px){
  .app-shell{padding:0}
  .app-card{min-height:100vh;border-radius:0;box-shadow:none}
  .content{padding:16px 20px 28px}
  .topbar{padding:0 20px}
}