:root{--bg: var(--tg-theme-bg-color, #0f1115);--card: var(--tg-theme-secondary-bg-color, #1a1d24);--text: var(--tg-theme-text-color, #f2f2f2);--hint: var(--tg-theme-hint-color, #8a8f98);--accent: var(--tg-theme-button-color, #1e88e5);--accent-text: var(--tg-theme-button-text-color, #fff);--brm: #e0b55b;--ok: #4caf7d;--err: #e5604f}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,system-ui,Segoe UI,Roboto,sans-serif}.app{padding:16px 16px 90px;max-width:520px;margin:0 auto}h1{font-size:20px;margin:0 0 12px}h2{font-size:16px;margin:20px 0 8px;color:var(--hint);font-weight:600;text-transform:uppercase;letter-spacing:.04em}.card{background:var(--card);border-radius:16px;padding:16px;margin-bottom:12px}.balance{font-size:44px;font-weight:700;letter-spacing:-1px}.balance small{font-size:16px;color:var(--brm);font-weight:600;margin-left:6px}.hint{color:var(--hint);font-size:13px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.btn{display:block;width:100%;padding:14px;border:0;border-radius:14px;background:var(--accent);color:var(--accent-text);font-size:16px;font-weight:600;text-align:center;text-decoration:none;cursor:pointer}.btn.secondary{background:var(--card);color:var(--text)}.btn.ghost{background:transparent;color:var(--accent)}.btn:disabled{opacity:.5}.row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:15px}.row:last-child{border-bottom:0}.amt.in{color:var(--ok);font-weight:600}.amt.out{color:var(--text);font-weight:600}input,select,textarea{width:100%;padding:14px;border-radius:12px;border:1px solid rgba(255,255,255,.1);background:var(--bg);color:var(--text);font-size:17px;margin-bottom:10px}.big-input{font-size:36px;text-align:center;font-weight:700}.err{color:var(--err);font-size:14px;margin:6px 0}.ok{color:var(--ok);font-size:14px;margin:6px 0}.nav{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--card);border-top:1px solid rgba(255,255,255,.06);padding:8px 0 calc(8px + env(safe-area-inset-bottom))}.nav a{flex:1;text-align:center;color:var(--hint);text-decoration:none;font-size:12px}.nav a.active{color:var(--accent)}.nav a span{display:block;font-size:20px}.chip{display:inline-block;padding:4px 10px;border-radius:999px;background:#ffffff14;font-size:12px;margin-right:6px}.chip.on{background:var(--accent);color:var(--accent-text)}.meter{height:10px;border-radius:6px;background:#ffffff14;overflow:hidden}.meter>div{height:100%;background:var(--ok)}.qrbox{background:#fff;padding:12px;border-radius:16px;display:inline-block}#reader{border-radius:16px;overflow:hidden}.slot{padding:10px;border-radius:10px;background:#ffffff0f;text-align:center;font-size:14px}.slot.taken{opacity:.35}.slot.sel{background:var(--accent);color:var(--accent-text)}.slots{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}