@charset "UTF-8";:root{--primary-color: #3b82f6;--bg-color: #0f172a;--card-bg: #1e293b;--text-main: #f8fafc;--button-radius: 12px;--font-family: ui-sans-serif, system-ui, sans-serif}body.dark-theme{--bg-color: #0b0b0f;--card-bg: #141414;--text-main: #ffffff}body.dark-theme .amount-grid button{background:#1a1a1a;border-color:#333;color:#fff}body.dark-theme .manual-input-container input{background:#1a1a1a;color:#fff;border-color:#333}*{box-sizing:border-box;font-family:var(--font-family);-webkit-tap-highlight-color:transparent}body{margin:0;padding:0;background-color:var(--bg-color);color:var(--text-main);display:flex;justify-content:center;transition:background-color .3s ease;min-height:100vh}.checkout-container{width:100%;max-width:450px;min-height:100vh;background:var(--bg-color);display:flex;flex-direction:column;position:relative;overflow-x:hidden;box-shadow:0 0 20px #00000080}.amount-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:15px}.amount-grid button{padding:15px 5px;border:2px solid #333;background:#1a1a1a;border-radius:var(--button-radius);font-weight:700;font-size:.95rem;cursor:pointer;transition:all .2s ease;color:#fff}.amount-grid button.selected{background-color:var(--primary-color)!important;border-color:var(--primary-color);color:#000!important;transform:scale(.96);box-shadow:0 4px 12px #e0bb4e4d}.manual-input-container{padding:0 15px;margin-bottom:20px}.manual-input-container .input-wrapper{position:relative}.manual-input-container .input-wrapper input{width:100%;padding:16px;background:#1a1a1a;color:#fff;border:2px solid #333;border-radius:var(--button-radius);font-size:1.1rem;font-weight:600}.manual-input-container .input-wrapper input:focus{border-color:var(--primary-color);outline:none}.main-action-button{margin-top:auto;padding:20px 15px 30px}.main-action-button button{width:100%;padding:18px;background-color:var(--primary-color);color:#000;border:none;border-radius:var(--button-radius);font-size:1.1rem;font-weight:800;text-transform:uppercase;letter-spacing:1px;cursor:pointer;transition:.3s}.main-action-button button:disabled{background-color:#333!important;color:#666!important;cursor:not-allowed}.session-error{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:2rem;gap:1.5rem}.session-error h3{font-size:1.5rem;margin:0;color:var(--primary-color)}.session-error p{margin:0;opacity:.8;font-size:1rem}.session-error button{border:none;border-radius:var(--button-radius);background:var(--primary-color);color:#000;padding:1rem 2rem;font-weight:800;text-transform:uppercase;cursor:pointer}.loader{display:flex;align-items:center;justify-content:center;height:100vh;color:var(--primary-color);font-weight:700}.router-container{animation:fadeIn .4s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}