:root{--bg: #0f0f1a;--card: #1a1a2e;--card-hover: #252540;--accent: #7c5cff;--accent-light: #9d83ff;--text: #e0e0e0;--text-muted: #6b6b8a;--green: #4caf50;--red: #f44336;--orange: #ff9800;--radius: 14px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);max-width:500px;margin:0 auto;min-height:100vh;padding-bottom:80px}.login-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:40px 20px;text-align:center}.login-logo{font-size:64px;margin-bottom:16px}.login-screen h1{font-size:28px;color:var(--accent-light);margin-bottom:8px}.login-screen p{color:var(--text-muted);margin-bottom:32px;font-size:15px}.google-btn{display:flex;align-items:center;gap:12px;background:#fff;color:#444;padding:14px 28px;border-radius:12px;border:none;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s}.google-btn:active{transform:scale(.97)}.google-btn svg{width:24px;height:24px;flex-shrink:0}.login-error{color:var(--red);font-size:14px;margin-top:16px}.loading-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;color:var(--text-muted);font-size:15px}.spinner{width:32px;height:32px;border:3px solid var(--card);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin-right:12px}@keyframes spin{to{transform:rotate(360deg)}}.header{position:sticky;top:0;background:var(--bg);padding:16px 20px 12px;z-index:100;border-bottom:1px solid rgba(255,255,255,.05)}.header-top{display:flex;justify-content:space-between;align-items:center}.header h1{font-size:24px;color:var(--accent-light);font-weight:700}.user-info{display:flex;align-items:center;gap:8px}.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--card);display:flex;align-items:center;justify-content:center;font-size:16px}.user-name{font-size:13px;color:var(--text)}.logout-btn{background:none;border:1px solid rgba(255,255,255,.15);color:var(--text-muted);padding:4px 12px;border-radius:8px;font-size:12px;cursor:pointer}.month-nav{display:flex;align-items:center;justify-content:space-between;margin-top:12px}.month-nav button{background:var(--card);border:none;color:var(--accent);width:40px;height:40px;border-radius:50%;font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center}.month-nav button:active{background:var(--card-hover)}.month-nav .current-month{font-size:18px;font-weight:600}.summary{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:16px 20px}.summary-card{background:var(--card);border-radius:var(--radius);padding:16px;text-align:center;transition:transform .15s ease}.summary-card:active{transform:scale(.96)}.summary-card .label{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.summary-card .value{font-size:22px;font-weight:700;margin-top:4px}.summary-card.pendiente .value{color:var(--orange)}.summary-card.pagado .value{color:var(--green)}.summary-card.total .value{color:var(--accent-light)}.summary-card.count .value{color:var(--text)}.progress-bar{height:6px;background:var(--card);border-radius:3px;margin:12px 20px 0;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--green));transition:width .5s ease;border-radius:3px}.tabs{display:flex;padding:0 20px;gap:8px;overflow-x:auto;-webkit-overflow-scrolling:touch}.tab{padding:8px 16px;border-radius:20px;font-size:14px;white-space:nowrap;cursor:pointer;border:1px solid rgba(255,255,255,.08);color:var(--text-muted);background:transparent}.tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}.view{display:none;padding:16px 20px}.view.active{display:block}.pago-card{background:var(--card);border-radius:var(--radius);padding:14px 16px;margin-bottom:10px;display:flex;align-items:center;gap:12px;transition:all .2s ease;cursor:pointer;animation:fadeInUp .3s ease both;border:1px solid transparent}.pago-card:nth-child(1){animation-delay:.03s}.pago-card:nth-child(2){animation-delay:.06s}.pago-card:nth-child(3){animation-delay:.09s}.pago-card:nth-child(4){animation-delay:.12s}.pago-card:nth-child(5){animation-delay:.15s}.pago-card:nth-child(6){animation-delay:.18s}.pago-card:nth-child(7){animation-delay:.21s}.pago-card:nth-child(8){animation-delay:.24s}.pago-card:nth-child(9){animation-delay:.27s}.pago-card:nth-child(10){animation-delay:.3s}.pago-card:hover{border-color:#7c5cff4d;transform:translate(2px)}.pago-card:active{background:var(--card-hover);transform:scale(.985)}.pago-card.pagado{opacity:.55}@keyframes fadeInUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.pago-check{width:28px;height:28px;border-radius:50%;border:2px solid var(--accent);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .2s}.pago-check.checked{background:var(--accent);transform:scale(1.1)}.pago-check.checked:after{content:"✓";color:#fff;font-size:16px;font-weight:700;animation:popIn .2s ease}@keyframes popIn{0%{transform:scale(0)}to{transform:scale(1)}}.pago-info{flex:1}.pago-nombre{font-size:16px;font-weight:500}.pago-card.pagado .pago-nombre{text-decoration:line-through;color:var(--text-muted)}.pago-cat{font-size:11px;color:var(--text-muted);margin-top:2px}.pago-monto{font-size:16px;font-weight:700;text-align:right}.pago-vence{font-size:11px;color:var(--text-muted);text-align:right;margin-top:2px}.pago-vence.vencido{color:var(--red)}.empty{text-align:center;padding:60px 20px;color:var(--text-muted)}.empty .icon{font-size:48px;margin-bottom:12px}.chart-container{background:var(--card);border-radius:var(--radius);padding:16px;margin-bottom:16px}.chart-container h3{font-size:15px;color:var(--text-muted);margin-bottom:12px}.copy-month{text-align:center;padding:16px 20px}.copy-month button{background:var(--card);border:1px solid var(--accent);color:var(--accent);padding:10px 24px;border-radius:20px;font-size:14px;cursor:pointer}.copy-month button:active{background:var(--card-hover)}.fab{position:fixed;bottom:24px;right:24px;width:60px;height:60px;border-radius:50%;background:var(--accent);color:#fff;border:none;font-size:32px;font-weight:300;cursor:pointer;box-shadow:0 4px 16px #7c5cff66;display:flex;align-items:center;justify-content:center;z-index:200;transition:transform .2s,box-shadow .2s;line-height:1}.fab:active{transform:scale(.92);box-shadow:0 2px 8px #7c5cff4d}.modal-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:300;padding:20px;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--card);border-radius:20px;width:100%;max-width:400px;max-height:90vh;overflow-y:auto;padding:24px;animation:slideUp .25s ease}@keyframes slideUp{0%{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.modal-header h2{font-size:20px;color:var(--text)}.modal-close{background:none;border:none;color:var(--text-muted);font-size:22px;cursor:pointer;padding:4px;line-height:1}.modal-form{display:flex;flex-direction:column;gap:16px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-size:13px;color:var(--text-muted);font-weight:500}.form-group input,.form-group select{background:var(--bg);border:1px solid rgba(255,255,255,.1);color:var(--text);padding:12px 14px;border-radius:12px;font-size:15px;outline:none;transition:border-color .2s}.form-group input:focus,.form-group select:focus{border-color:var(--accent)}.form-group input::placeholder{color:var(--text-muted)}.form-row{display:flex;gap:12px}.form-row .form-group{flex:1}.btn-primary{background:var(--accent);color:#fff;border:none;padding:14px;border-radius:14px;font-size:16px;font-weight:600;cursor:pointer;margin-top:4px;transition:opacity .2s}.btn-primary:active{opacity:.8}.btn-delete{background:transparent;color:var(--red);border:1px solid rgba(244,67,54,.3);padding:12px;border-radius:14px;font-size:15px;font-weight:500;cursor:pointer;margin-top:8px;transition:opacity .2s}.btn-delete:active{opacity:.7}.evolucion-container{padding:0}.evol-table-wrap{margin-top:16px}.evol-table{background:var(--card);border-radius:var(--radius);overflow:hidden}.evol-row{display:grid;grid-template-columns:1fr 1fr 1fr;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.05);font-size:14px;align-items:center}.evol-row:last-child{border-bottom:none}.evol-header-row{background:#7c5cff1a;font-weight:600;color:var(--text-muted);font-size:12px;text-transform:uppercase}.evol-paid{color:var(--green)}.evol-pending{color:var(--orange)}