*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#2F6BFF;--success:#22C55E;--danger:#EF4444;--warning:#F59E0B;
  --bg:#F6F7FB;--card:#FFF;--text:#0F172A;--muted:#64748B;--border:#E2E8F0;
  --safe-bottom:env(safe-area-inset-bottom,0px);
}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}
.mobile-app{min-height:100vh;padding-bottom:calc(72px + var(--safe-bottom))}
.mobile-top-bar{position:sticky;top:0;z-index:100;background:var(--bg);padding:12px 16px 8px;backdrop-filter:blur(10px);display:flex;justify-content:space-between;align-items:center}
.mobile-top-bar h1{font-size:22px;font-weight:700}
.top-bar-action{width:36px;height:36px;border-radius:50%;border:none;background:var(--card);font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,0.06)}
.mobile-content{padding:0 16px 20px}
.mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;height:calc(64px + var(--safe-bottom));background:var(--card);border-top:1px solid var(--border);z-index:100;display:flex;padding-bottom:var(--safe-bottom)}
.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;border:none;background:none;color:var(--muted);cursor:pointer;font-size:12px;gap:2px;transition:color .2s}
.nav-item.active{color:var(--primary)}
.nav-icon{font-size:22px}
.nav-label{font-size:11px}

.card-item{background:var(--card);border-radius:14px;padding:14px;margin-bottom:12px;box-shadow:0 2px 12px rgba(0,0,0,0.06)}
.card-masked{font-size:17px;font-weight:600;letter-spacing:1px;margin-bottom:4px}
.card-balance{font-size:20px;font-weight:700;color:var(--primary);margin-bottom:4px}
.card-meta{font-size:12px;color:var(--muted);display:flex;gap:12px}
.card-actions{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.card-actions button{flex:1;min-width:60px;padding:8px 12px;border-radius:8px;border:1px solid var(--border);background:var(--card);font-size:13px;cursor:pointer;color:var(--text)}
.card-actions button.danger{color:var(--danger);border-color:var(--danger)}

.txn-item{background:var(--card);border-radius:12px;padding:12px;margin-bottom:10px;box-shadow:0 1px 6px rgba(0,0,0,0.04)}
.txn-top{display:flex;justify-content:space-between;margin-bottom:4px}
.txn-merchant{font-size:14px;font-weight:600}
.txn-amount{font-size:16px;font-weight:700}
.txn-meta{font-size:12px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}
.txn-status{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600}
.txn-status.success{background:#DCFCE7;color:#166534}
.txn-status.failed{background:#FEE2E2;color:#991B1B}
.txn-status.pending{background:#FEF3C7;color:#92400E}
.txn-fee{font-size:11px;color:var(--muted)}

.wallet-card{background:linear-gradient(135deg,var(--primary),#4F46E5);border-radius:16px;padding:20px;color:#fff;margin-bottom:16px;box-shadow:0 4px 20px rgba(47,107,255,0.3)}
.wallet-label{font-size:13px;opacity:0.8;margin-bottom:4px}
.wallet-balance{font-size:32px;font-weight:700}
.wallet-sub{display:flex;justify-content:space-between;margin-top:16px;padding-top:16px;border-top:1px solid rgba(255,255,255,0.2)}
.wallet-sub-item{text-align:center}
.wallet-sub-val{font-size:18px;font-weight:600}
.wallet-sub-lbl{font-size:11px;opacity:0.7}
.wallet-actions{display:flex;gap:8px;margin-top:12px}
.wallet-actions button{flex:1;padding:12px;border-radius:10px;border:none;font-size:14px;font-weight:600;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff}
.btn-outline{background:var(--card);color:var(--primary);border:1px solid var(--primary)}

.profile-card{background:var(--card);border-radius:14px;padding:16px;margin-bottom:12px;box-shadow:0 2px 12px rgba(0,0,0,0.06)}
.profile-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--border);cursor:pointer}
.profile-row:last-child{border-bottom:none}
.profile-label{font-size:14px}
.profile-value{font-size:14px;color:var(--muted)}

.search-bar{position:sticky;top:56px;z-index:50;background:var(--bg);padding:8px 0}
.search-bar input{width:100%;padding:12px 16px;border-radius:12px;border:1px solid var(--border);background:var(--card);font-size:15px;outline:none}
.search-bar input:focus{border-color:var(--primary)}
.filter-chips{display:flex;overflow-x:auto;gap:8px;padding:6px 0;-webkit-overflow-scrolling:touch}
.filter-chips::-webkit-scrollbar{display:none}
.filter-chip{white-space:nowrap;border-radius:999px;padding:6px 14px;font-size:13px;border:1px solid var(--border);background:var(--card);cursor:pointer}
.filter-chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}

.bottom-sheet-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.4);z-index:200;display:none}
.bottom-sheet-overlay.open{display:block}
.bottom-sheet{position:fixed;left:0;right:0;bottom:0;background:var(--card);border-radius:20px 20px 0 0;z-index:201;transform:translateY(100%);transition:transform .3s ease;max-height:80vh;overflow-y:auto;padding-bottom:var(--safe-bottom)}
.bottom-sheet.open{transform:translateY(0)}
.bs-handle{width:40px;height:4px;background:var(--border);border-radius:2px;margin:12px auto 8px}
.bs-title{font-size:16px;font-weight:700;text-align:center;padding:4px 0 12px;border-bottom:1px solid var(--border);margin:0 16px}
.bs-body{padding:16px}
.bs-close{padding:16px;text-align:center;color:var(--muted);font-size:14px;cursor:pointer;border-top:1px solid var(--border);margin-top:8px}
.bs-action{display:flex;align-items:center;padding:14px 0;border-bottom:1px solid var(--border);cursor:pointer;font-size:15px}
.bs-action:last-child{border-bottom:none}
.bs-action .icon{margin-right:10px;font-size:20px}
.bs-action.danger{color:var(--danger)}

.empty-state{text-align:center;padding:60px 20px;color:var(--muted)}
.empty-state .icon{font-size:48px;margin-bottom:12px}
.empty-state h3{font-size:16px;margin-bottom:6px}
.empty-state p{font-size:13px}
.loading{text-align:center;padding:40px;color:var(--muted)}
.toast{position:fixed;top:20px;left:50%;transform:translateX(-50%);background:#0F172A;color:#fff;padding:10px 20px;border-radius:10px;font-size:14px;z-index:300;opacity:0;transition:opacity .3s;pointer-events:none}
.toast.show{opacity:1}

/* Card tags */
.card-tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600}
.tag-active{background:#DCFCE7;color:#166534}
.tag-frozen{background:#FEE2E2;color:#991B1B}
.tag-inactive{background:#F1F5F9;color:#64748B}

/* Card action small buttons */
.btn-sm{padding:6px 12px!important;border-radius:8px!important;border:1px solid var(--border)!important;background:var(--card)!important;font-size:12px!important;cursor:pointer!important;color:var(--text)!important;flex:0 0 auto!important;min-width:auto!important}
.btn-warn{border-color:var(--danger)!important;color:var(--danger)!important}

/* Bottom sheet warning/danger variants */
.bs-warn{border-left:3px solid var(--warning)}
.bs-danger{border-left:3px solid var(--danger)}

/* Card preview in sheet */
.card-preview{font-size:17px;letter-spacing:1px;font-weight:600;color:var(--primary)}

/* Transaction reason */
.txn-reason{font-size:11px;color:var(--danger);margin-top:4px;line-height:1.4}

/* Status tags */
.status-success{background:#DCFCE7;color:#166534}
.status-failed{background:#FEE2E2;color:#991B1B}
.status-pending{background:#FEF3C7;color:#92400E}

/* Loading skeleton */
.loading-skeleton{display:flex;flex-direction:column;gap:12px;padding:8px 0}
.sk-block{height:80px;background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:14px}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* Profile */
.profile-avatar{width:56px;height:56px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:28px;margin:0 auto 12px}
.profile-name{font-size:18px;font-weight:600;text-align:center}
.profile-sub{text-align:center;margin-top:4px}

/* Toast error */
.toast.error{background:var(--danger)}

/* Login */
.login-page input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,107,255,0.15)}

/* Card secret reveal sheet */
.card-secret-sheet{padding:4px 0}
.secret-field{margin-bottom:18px}
.secret-label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:4px}
.secret-value{font-size:18px;font-weight:700;letter-spacing:1.5px;color:var(--text);background:#F8FAFC;padding:12px 14px;border-radius:10px;word-break:break-all}
.secret-copy-btn{margin-top:8px;width:100%;padding:10px;border-radius:8px;border:none;background:var(--primary);color:#fff;font-size:14px;font-weight:600;cursor:pointer}
.secret-copy-btn:active{opacity:0.8}

@media(min-width:768px){.mobile-bottom-nav,.mobile-top-bar{display:none}.mobile-app{padding-bottom:0}}