:root{--primary:#4f46e5;--primary-hover:#4338ca;--bg-gradient:linear-gradient(135deg, #f6f8fb 0%, #e9edf5 100%);--glass-bg:#ffffffb3;--glass-border:#ffffff80;--text-main:#1f2937;--text-muted:#6b7280;--card-shadow:0 8px 32px 0 #1f268712;--danger:#ef4444;--success:#10b981}@media (prefers-color-scheme:dark){:root{--bg-gradient:linear-gradient(135deg, #111827 0%, #1f2937 100%);--glass-bg:#111827b3;--glass-border:#ffffff1a;--text-main:#f9fafb;--text-muted:#9ca3af;--card-shadow:0 8px 32px 0 #0000004d}}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}body{background:var(--bg-gradient);color:var(--text-main);-webkit-font-smoothing:antialiased;min-height:100vh}#root{max-width:480px;min-height:100vh;margin:0 auto;padding-bottom:80px;position:relative}.glass-panel{background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);box-shadow:var(--card-shadow);border-radius:24px}.glass-header{z-index:10;text-align:center;background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--glass-border);padding:20px;position:sticky;top:0}.glass-header h1{background:linear-gradient(90deg,#4f46e5,#ec4899);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:20px;font-weight:700}.form-group{margin-bottom:20px}.form-label{color:var(--text-muted);margin-bottom:8px;font-size:14px;font-weight:500;display:block}.form-input{border:1px solid var(--glass-border);background:var(--glass-bg);width:100%;color:var(--text-main);border-radius:16px;padding:16px;font-size:16px;transition:all .3s;box-shadow:inset 0 2px 4px #00000005}.form-input:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #4f46e533}.btn-primary{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:16px;width:100%;padding:16px;font-size:16px;font-weight:600;transition:all .2s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 12px #4f46e54d}.btn-primary:active{transform:scale(.96);box-shadow:0 2px 6px #4f46e533}.bottom-nav{width:100%;max-width:480px;padding:16px 24px;padding-bottom:env(safe-area-inset-bottom,24px);background:var(--glass-bg);-webkit-backdrop-filter:blur(20px);border-top:1px solid var(--glass-border);z-index:50;justify-content:space-around;display:flex;position:fixed;bottom:0;left:50%;transform:translate(-50%)}.nav-item{color:var(--text-muted);cursor:pointer;background:0 0;border:none;flex-direction:column;align-items:center;gap:4px;font-size:12px;font-weight:500;text-decoration:none;transition:color .3s;display:flex}.nav-item.active{color:var(--primary)}.nav-item svg{transition:transform .3s cubic-bezier(.4,0,.2,1)}.nav-item.active svg{transform:translateY(-2px)}.content-container{padding:24px 20px;animation:.4s ease-out fadeIn}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.expense-item{border-radius:16px;justify-content:space-between;align-items:center;margin-bottom:12px;padding:16px;transition:transform .2s;display:flex}.expense-item:active{transform:scale(.98)}.expense-info h4{margin-bottom:4px;font-size:16px;font-weight:600}.expense-info p{color:var(--text-muted);font-size:13px}.expense-amount{color:var(--danger);font-size:16px;font-weight:700}.icon-btn{cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;padding:8px;transition:background .2s;display:flex}.icon-btn:active{background:#0000000d}@media (prefers-color-scheme:dark){.icon-btn:active{background:#ffffff1a}}.modal-overlay{-webkit-backdrop-filter:blur(4px);z-index:100;background:#0006;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal-content{width:100%;max-width:440px;max-height:90vh;animation:.3s cubic-bezier(.16,1,.3,1) modalIn;overflow-y:auto}@keyframes modalIn{0%{opacity:0;transform:scale(.95)translateY(10px)}to{opacity:1;transform:scale(1)translateY(0)}}