:root{--primary:#1a51f4;--primary-hover:#3e67f0;--bg:#0a090e;--bg-card:#131419;--bg-card-alt:#1a1a24;--text:#f4f4f5;--text-muted:#a1a1aa;--accent:var(--primary);--accent-hover:var(--primary-hover);--border:#27272a;--danger:#ef4444;--radius:12px;--radius-sm:8px}*{box-sizing:border-box}html{-webkit-font-smoothing:antialiased}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover);text-decoration:underline}button{font:inherit;cursor:pointer;border:none;border-radius:var(--radius);padding:.75rem 1.25rem;transition:background .15s,opacity .15s}button:disabled{opacity:.6;cursor:not-allowed}input{font:inherit;width:100%;padding:.75rem 1rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-card);color:var(--text)}input::placeholder{color:var(--text-muted)}input:focus{outline:none;border-color:var(--accent)}.app-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;border-bottom:1px solid var(--border)}.app-logo{font-weight:700;font-size:1.25rem;color:var(--text)}.app-logo,.app-user{display:flex;align-items:center;gap:.5rem}.app-user{color:var(--text-muted);font-size:.9rem}.btn-primary{background:linear-gradient(135deg,#1a51f4,#3e67f0 50%,#0600fe);color:#fff;width:100%;padding:1rem 1.25rem;font-weight:600;border-radius:var(--radius)}.btn-primary:hover:not(:disabled){opacity:.95}.btn-secondary{background:var(--bg-card-alt);color:var(--text);width:100%;padding:1rem 1.25rem;border-radius:var(--radius);margin-top:.75rem}.btn-secondary:hover:not(:disabled){background:#22222e}.btn-apple{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;width:100%;padding:1rem 1.25rem;background:#000;color:#fff;font-weight:500;border-radius:var(--radius);border:1px solid hsla(0,0%,100%,.2)}.btn-apple:hover:not(:disabled){background:#1a1a1a}.btn-apple .btn-apple-icon{display:inline-flex;align-items:center;justify-content:center}.card{background:var(--bg-card);border-radius:var(--radius);padding:1.25rem;margin-bottom:1rem}.card-accent{background:var(--bg-card-alt);border:1px solid var(--border)}.alert-danger{color:var(--danger)}.alert-danger,.alert-success{font-size:.9rem;margin:.75rem 0}.alert-success{color:#22c55e}.back-row{margin-bottom:1.25rem}.back-row,.back-row a{display:flex;align-items:center;gap:.5rem}.back-row a{color:var(--text-muted);font-size:.95rem}.back-row a:hover{color:var(--text);text-decoration:none}.page-title{font-size:1.75rem;font-weight:700;margin:0 0 1rem}.amount-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:.75rem;gap:.75rem;margin-top:1rem}.amount-grid button{background:linear-gradient(135deg,#1a51f4,#3e67f0 50%,#0600fe);color:#fff;padding:1rem;font-weight:600;font-size:1rem}.link-center{display:block;text-align:center;margin-top:1rem;font-size:.95rem}.nav-island{padding:0;overflow:hidden}.nav-island__row{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;color:var(--text);text-decoration:none;font-weight:500;font-size:1rem;transition:background .15s ease,color .15s ease;border-bottom:1px solid var(--border)}.nav-island__row:hover{text-decoration:none;background:hsla(0,0%,100%,.05)}.nav-island__row:last-child{border-bottom:none}.nav-island__chevron{width:1.25rem;height:1.25rem;color:var(--text-muted);flex-shrink:0}.nav-island__row:hover .nav-island__chevron{color:var(--text)}.share-island{position:fixed;bottom:0;left:0;right:0;z-index:50;padding:.75rem 1.25rem max(.75rem,env(safe-area-inset-bottom));pointer-events:none}.share-island,.share-island__btn{display:flex;justify-content:center}.share-island__btn{pointer-events:auto;align-items:center;gap:.75rem;padding:.875rem 1.5rem;min-width:160px;background:var(--bg-card-alt);border:1px solid var(--border);color:var(--text);border-radius:999px;font-size:.95rem;font-weight:500;box-shadow:0 4px 20px rgba(0,0,0,.35);transition:background .2s,border-color .2s}.share-island__btn:hover{background:var(--bg-card);border-color:var(--primary);text-decoration:none}.share-island__btn:active{transform:scale(.98)}.share-island__icon{display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.share-island__btn:hover .share-island__icon{color:var(--primary)}.share-island__label{white-space:nowrap}.share-island__arrow{color:var(--text-muted);font-size:1.1rem;line-height:1}.share-island__btn:hover .share-island__arrow{color:var(--primary)}