/* ============================================
   USDT PAYMENT - SIMPLE & CLEAN
   ============================================ */

*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;background:#0f1219;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}
.pay-wrapper{width:100%;max-width:480px}
.pay-card{background:#1a1f2e;border-radius:24px;padding:28px 24px 24px;border:1px solid rgba(38,161,123,0.08);box-shadow:0 20px 60px rgba(0,0,0,0.6)}
.pay-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:8px}
.pay-brand{display:flex;align-items:center;gap:12px}
.pay-logo{width:44px;height:44px;background:linear-gradient(135deg,#26a17b,#1d8a6a);border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.pay-logo img{width:28px;height:28px;object-fit:contain}
.pay-title h1{font-size:16px;font-weight:700;color:#fff;letter-spacing:-0.3px}
.pay-title span{font-size:12px;color:#26a17b;font-weight:500;display:block;margin-top:1px}
.pay-badge{background:rgba(38,161,123,0.1);padding:4px 14px;border-radius:100px;border:1px solid rgba(38,161,123,0.12);font-size:11px;font-weight:600;color:#26a17b;display:flex;align-items:center;gap:6px}
.pay-dot{width:6px;height:6px;background:#2ecc71;border-radius:50%;animation:payPulse 1.8s infinite}
@keyframes payPulse{0%,100%{opacity:0.4;transform:scale(0.8)}50%{opacity:1;transform:scale(1.2)}}

/* NETWORK SELECTOR */
.pay-network-selector{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:18px}
.pay-network-btn{background:rgba(255,255,255,0.04);border:2px solid rgba(255,255,255,0.06);border-radius:12px;padding:8px 4px;cursor:pointer;transition:all 0.3s;display:flex;flex-direction:column;align-items:center;gap:4px;font-family:'Inter',sans-serif}
.pay-network-btn img{width:28px;height:28px;object-fit:contain;display:block}
.pay-network-btn span{font-size:10px;font-weight:600;color:#6a7a9a;text-transform:uppercase;letter-spacing:0.3px;transition:color 0.3s}
.pay-network-btn:hover{background:rgba(255,255,255,0.08);border-color:rgba(255,255,255,0.12)}
.pay-network-btn.active{border-color:#26a17b;background:rgba(38,161,123,0.1)}
.pay-network-btn.active span{color:#26a17b}

.pay-amount{background:rgba(255,255,255,0.02);border-radius:16px;padding:16px 20px;margin-bottom:16px;border:1px solid rgba(255,255,255,0.04)}
.pay-label{font-size:11px;text-transform:uppercase;letter-spacing:0.6px;color:#6a7a9a;font-weight:600}
.pay-value{font-size:26px;font-weight:800;color:#26a17b;margin-top:4px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.pay-sub{font-size:13px;color:#6a7a9a;margin-top:4px;display:flex;gap:12px;flex-wrap:wrap}
.pay-sub span:first-child{color:#8a9ab8}
.pay-copy{background:rgba(38,161,123,0.08);border:none;color:#26a17b;width:28px;height:28px;border-radius:8px;cursor:pointer;transition:all 0.2s;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.pay-copy svg{width:16px;height:16px;fill:currentColor}
.pay-copy:hover{background:rgba(38,161,123,0.16);transform:scale(1.05)}
.pay-copy.copied{background:rgba(46,204,113,0.15);color:#2ecc71}
.pay-address{background:rgba(0,0,0,0.25);border-radius:16px;padding:16px 18px;margin-bottom:14px}
.pay-address .pay-label{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.pay-tag{background:rgba(38,161,123,0.12);padding:1px 10px;border-radius:100px;font-size:9px;color:#26a17b;font-weight:700;text-transform:uppercase}
.pay-field{display:flex;align-items:center;gap:8px;background:rgba(0,0,0,0.25);border-radius:12px;padding:2px 2px 2px 14px;border:1px solid rgba(255,255,255,0.04)}
.pay-field input{flex:1;background:transparent;border:none;outline:none;color:#d0d8ee;font-size:13px;font-family:'Inter',monospace;font-weight:500;padding:8px 0;min-width:0}
.pay-field input::selection{background:rgba(38,161,123,0.2)}
.pay-copy-btn{background:rgba(38,161,123,0.08);border:none;color:#26a17b;width:36px;height:36px;border-radius:10px;cursor:pointer;transition:all 0.2s;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.pay-copy-btn svg{width:18px;height:18px;fill:currentColor}
.pay-copy-btn:hover{background:rgba(38,161,123,0.16)}
.pay-copy-btn.copied{background:rgba(46,204,113,0.15);color:#2ecc71}
.pay-hint{font-size:12px;color:#6a7a9a;margin-top:8px}
.pay-hint strong{color:#26a17b}
.pay-info{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:14px}
.pay-info-item{background:rgba(0,0,0,0.2);border-radius:12px;padding:10px 12px;border:1px solid rgba(255,255,255,0.03);display:flex;align-items:center;justify-content:center;gap:8px;font-size:13px;font-weight:600;color:#fff}
.pay-info-item svg{width:18px;height:18px;flex-shrink:0}
.pay-info-item:first-child svg{stroke:#26a17b}
.pay-info-item:last-child svg{stroke:#2ecc71}
.pay-qr{display:flex;align-items:center;gap:18px;background:rgba(0,0,0,0.2);border-radius:16px;padding:14px 18px;margin-bottom:16px;border:1px solid rgba(255,255,255,0.03)}
.pay-qr-box{width:64px;height:64px;background:#0f1219;border-radius:12px;display:flex;align-items:center;justify-content:center;border:2px solid rgba(38,161,123,0.1);flex-shrink:0;color:#26a17b}
.pay-qr-box svg{width:32px;height:32px;fill:currentColor}
.pay-qr .pay-label{font-size:10px}
.pay-qr-amount{font-size:18px;font-weight:700;color:#fff;margin-top:2px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.pay-btn{width:100%;padding:16px;background:linear-gradient(135deg,#26a17b,#1d8a6a);border:none;border-radius:14px;font-size:16px;font-weight:700;color:#fff;cursor:pointer;transition:all 0.25s;display:flex;align-items:center;justify-content:center;gap:10px;box-shadow:0 6px 24px rgba(38,161,123,0.2)}
.pay-btn svg{width:20px;height:20px;fill:currentColor;transition:transform 0.25s}
.pay-btn:hover{transform:translateY(-2px);box-shadow:0 10px 32px rgba(38,161,123,0.3)}
.pay-btn:hover svg{transform:translateX(4px)}
.pay-btn:active{transform:scale(0.97)}
.pay-timer{display:flex;align-items:center;justify-content:space-between;margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,0.04);font-size:13px;color:#6a7a9a}
.pay-timer span:first-child{display:flex;align-items:center;gap:6px}
.pay-timer svg{width:16px;height:16px;fill:#6a7a9a}
.pay-countdown{font-size:20px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;display:flex;align-items:center;gap:2px}
.pay-time{display:inline-block;min-width:28px;text-align:center;background:rgba(255,255,255,0.04);padding:2px 6px;border-radius:6px;font-size:20px;font-weight:700;color:#fff}
.pay-sep{color:#6a7a9a;font-weight:400;margin:0 2px}
.pay-unit{font-size:13px;font-weight:400;color:#6a7a9a;margin-left:6px}
.pay-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.8);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);z-index:999;align-items:center;justify-content:center;padding:20px}
.pay-modal.active{display:flex}
.pay-modal-box{max-width:420px;width:100%;max-height:90vh;overflow-y:auto;background:#1a1f2e;border-radius:28px;padding:32px 28px 28px;border:1px solid rgba(38,161,123,0.1);box-shadow:0 40px 80px rgba(0,0,0,0.8);animation:payModalIn 0.3s ease}
@keyframes payModalIn{from{opacity:0;transform:scale(0.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}
.pay-modal-box::-webkit-scrollbar{width:4px}
.pay-modal-box::-webkit-scrollbar-thumb{background:rgba(38,161,123,0.3);border-radius:10px}
.pay-modal-icon{text-align:center;margin-bottom:12px}
.pay-modal-icon svg{width:44px;height:44px;fill:none}
.pay-modal-box h3{color:#fff;font-size:20px;font-weight:800;text-align:center;margin-bottom:12px}
.pay-modal-list{list-style:none;padding:0;margin:12px 0 16px}
.pay-modal-list li{color:#b0bcdd;font-size:14px;padding:6px 0 6px 28px;position:relative;border-bottom:1px solid rgba(255,255,255,0.03);line-height:1.5}
.pay-modal-list li:last-child{border-bottom:none}
.pay-modal-list li::before{content:'▸';position:absolute;left:0;color:#26a17b;font-weight:700}
.pay-modal-list li strong{color:#fff}
.pay-addr{font-size:13px;color:#8a9ab8;font-family:monospace}
.pay-modal-warning{background:rgba(231,76,60,0.06);padding:12px 16px;border-radius:12px;border-left:3px solid #e74c3c;font-size:13px;color:#d4a0a0;margin-bottom:20px;display:flex;align-items:flex-start;gap:10px;line-height:1.5}
.pay-modal-warning svg{width:18px;height:18px;fill:#e74c3c;flex-shrink:0;margin-top:1px}
.pay-modal-btn{width:100%;padding:14px;background:linear-gradient(135deg,#26a17b,#1d8a6a);border:none;border-radius:12px;color:#fff;font-size:16px;font-weight:700;cursor:pointer;transition:all 0.2s;display:flex;align-items:center;justify-content:center;gap:8px}
.pay-modal-btn svg{width:18px;height:18px;fill:currentColor}
.pay-modal-btn:hover{transform:scale(1.01);box-shadow:0 6px 24px rgba(38,161,123,0.25)}

@media (max-width:480px){.pay-card{padding:20px 16px 20px;border-radius:20px}.pay-value{font-size:22px}.pay-qr{flex-direction:column;text-align:center;gap:12px;padding:16px}.pay-qr-amount{justify-content:center;font-size:16px}.pay-info{grid-template-columns:1fr 1fr;gap:6px}.pay-info-item{font-size:12px;padding:8px 10px}.pay-field input{font-size:11px}.pay-header{flex-direction:column;align-items:flex-start}.pay-badge{align-self:flex-start}.pay-timer{flex-direction:column;gap:6px;text-align:center}.pay-countdown{font-size:18px}.pay-time{font-size:18px;min-width:24px;padding:1px 4px}.pay-modal-box{padding:24px 18px 20px}.pay-modal-box h3{font-size:18px}.pay-modal-list li{font-size:13px;padding:5px 0 5px 24px}.pay-network-selector{grid-template-columns:repeat(2,1fr)}}
@media (max-width:380px){.pay-card{padding:16px 12px 16px;border-radius:16px}.pay-value{font-size:19px}.pay-info{grid-template-columns:1fr}.pay-qr-box{width:56px;height:56px}.pay-qr-box svg{width:28px;height:28px}.pay-title h1{font-size:14px}.pay-time{font-size:16px;min-width:20px}.pay-network-selector{grid-template-columns:repeat(2,1fr)}}