*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--primary: #0891b2;--primary-dk: #0e7490;--success: #10b981;--success-bg: #d1fae5;--danger: #ef4444;--danger-bg: #fee2e2;--warn: #f59e0b;--bg: #f0fdfa;--surface: #ffffff;--text: #1f2937;--text-light: #6b7280;--border: #e5e7eb;--radius: 14px;--radius-sm: 8px;--shadow: 0 2px 12px rgba(0,0,0,.08);--shadow-lg: 0 8px 32px rgba(0,0,0,.15);--transition: all .2s ease;--header-h: 56px;--safe-bottom: env(safe-area-inset-bottom, 0px)}[data-theme=dark]{--bg: #0f172a;--surface: #1e293b;--text: #f1f5f9;--text-light: #94a3b8;--border: #334155;--shadow: 0 2px 12px rgba(0,0,0,.3);--shadow-lg: 0 8px 32px rgba(0,0,0,.5);--success-bg: #064e3b;--danger-bg: #7f1d1d}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;min-height:100dvh;-webkit-font-smoothing:antialiased}.pin-screen{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg);display:flex;justify-content:center;align-items:center;z-index:9999;padding:1.5rem}.pin-box{background:var(--surface);border-radius:24px;box-shadow:var(--shadow-lg);border:1px solid var(--border);padding:2.5rem 2rem;text-align:center;width:100%;max-width:360px;display:flex;flex-direction:column;gap:1rem;align-items:center}.pin-icon{font-size:3rem}.pin-box h2{font-size:1.5rem;font-weight:700;color:var(--primary)}.pin-box p{color:var(--text-light);font-size:.9rem;line-height:1.5}.btn-google{display:flex;align-items:center;gap:.75rem;background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.75rem 1.5rem;font-size:.95rem;font-weight:500;cursor:pointer;transition:var(--transition);width:100%;justify-content:center}.btn-google:hover{background:var(--bg)}.btn-primary{background:var(--primary);color:#fff;border:none;border-radius:var(--radius-sm);padding:.75rem 1.5rem;font-size:.95rem;font-weight:600;cursor:pointer;transition:var(--transition);width:100%}.btn-primary:hover{background:var(--primary-dk)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:transparent;color:var(--primary);border:1px solid var(--primary);border-radius:var(--radius-sm);padding:.75rem 1.5rem;font-size:.95rem;font-weight:500;cursor:pointer;transition:var(--transition);width:100%}.btn-secondary:hover{background:var(--success-bg)}.btn-icon{background:transparent;border:none;border-radius:var(--radius-sm);padding:.4rem .5rem;cursor:pointer;font-size:1.1rem;color:var(--text);transition:var(--transition)}.btn-icon:hover{background:var(--border)}.btn-danger{background:var(--danger);color:#fff;border:none;border-radius:var(--radius-sm);padding:.5rem 1rem;font-size:.85rem;font-weight:500;cursor:pointer}.input{width:100%;border:1px solid var(--border);border-radius:var(--radius-sm);padding:.75rem 1rem;font-size:1rem;color:var(--text);background:var(--surface);outline:none;transition:var(--transition)}.input:focus{border-color:var(--primary)}.app{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh}.app-header{position:sticky;top:0;z-index:100;background:var(--surface);border-bottom:1px solid var(--border);height:var(--header-h);display:flex;align-items:center;padding:0 1rem;gap:.5rem}.app-title{font-size:1.1rem;font-weight:700;color:var(--primary);flex:1}.header-actions{display:flex;align-items:center;gap:.25rem}.group-selector{background:transparent;border:1px solid var(--border);border-radius:var(--radius-sm);padding:.35rem .65rem;font-size:.85rem;font-weight:600;color:var(--primary);cursor:pointer;max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}main{flex:1;padding:1rem;max-width:600px;margin:0 auto;width:100%;padding-bottom:calc(5rem + var(--safe-bottom))}.month-nav{display:flex;align-items:center;justify-content:center;gap:1rem;margin-bottom:1rem}.btn-month{background:var(--surface);border:1px solid var(--border);border-radius:50%;width:36px;height:36px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1rem;color:var(--primary);transition:var(--transition)}.btn-month:hover{background:var(--bg)}.btn-month:disabled{opacity:.3;cursor:not-allowed}.month-label{font-weight:700;font-size:1rem;color:var(--text);min-width:140px;text-align:center}.balance-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow);padding:1.25rem;margin-bottom:1rem}.balance-card.owe{border-left:4px solid var(--danger)}.balance-card.receive{border-left:4px solid var(--success)}.balance-card.even{border-left:4px solid var(--primary)}.balance-label{font-size:.85rem;color:var(--text-light)}.balance-amount{font-size:1.75rem;font-weight:800;color:var(--text)}.balance-card.owe .balance-amount{color:var(--danger)}.balance-card.receive .balance-amount{color:var(--success)}.balance-section-label{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;margin-bottom:.35rem;padding-top:.5rem;border-top:1px solid var(--border)}.balance-section-label.receive{color:var(--success)}.balance-section-label.owe{color:var(--danger)}.balance-member-row{display:flex;justify-content:space-between;align-items:center;font-size:.875rem;padding:.15rem 0}.balance-member-name{color:var(--text)}.balance-member-amount{font-weight:600}.balance-member-amount.pos{color:var(--success)}.balance-member-amount.neg{color:var(--danger)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem;margin-top:1rem}.section-title{font-weight:700;font-size:.95rem}.section-title.owe-title{color:var(--danger)}.section-title.recv-title{color:var(--success)}.section-total{font-weight:700;font-size:.95rem;color:var(--text)}.expense-items{list-style:none;display:flex;flex-direction:column;gap:.25rem}.expense-item{display:grid;grid-template-columns:1.4rem 1fr auto auto;gap:.5rem;align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.6rem .75rem;font-size:.875rem}.expense-emoji{font-size:1rem;text-align:center;line-height:1}input[list]::-webkit-calendar-picker-indicator{display:none!important}.expense-concepto{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.expense-importe{font-weight:600;white-space:nowrap;color:var(--text)}.btn-delete{background:transparent;border:none;cursor:pointer;font-size:1rem;color:var(--text-light);padding:.1rem .2rem;border-radius:4px;line-height:1;transition:var(--transition)}.btn-delete:hover{color:var(--danger);background:var(--danger-bg)}.empty-state{text-align:center;color:var(--text-light);padding:3rem 1rem 2rem;font-size:.9rem;display:flex;flex-direction:column;align-items:center;gap:.1rem}.month-summary{display:flex;align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.6rem 1rem;margin-bottom:.25rem}.month-summary-item{flex:1;display:flex;flex-direction:column;gap:.1rem}.month-summary-item:last-child{align-items:flex-end}.month-summary-label{font-size:.7rem;color:var(--text-light);text-transform:uppercase;letter-spacing:.03em}.month-summary-value{font-size:1rem;font-weight:700;color:var(--text)}.month-summary-sep{width:1px;height:2rem;background:var(--border);margin:0 1rem}.toast{position:fixed;bottom:calc(5rem + var(--safe-bottom));left:50%;transform:translate(-50%);background:#1f2937;color:#fff;padding:.55rem 1.2rem;border-radius:99px;font-size:.85rem;font-weight:500;white-space:nowrap;z-index:2000;pointer-events:none;animation:toast-in .2s ease}[data-theme=dark] .toast{background:#e2e8f0;color:#1f2937}@keyframes toast-in{0%{opacity:0;transform:translate(-50%) translateY(8px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.fab{position:fixed;bottom:calc(1.5rem + var(--safe-bottom));right:1.5rem;width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:1.75rem;cursor:pointer;box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:center;transition:var(--transition);z-index:200}.fab:hover{background:var(--primary-dk);transform:scale(1.05)}.sheet-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:300;padding:1rem}.sheet{background:var(--surface);border-radius:20px;width:100%;max-width:420px;padding:1.5rem;display:flex;flex-direction:column;gap:1rem;max-height:90vh;overflow-y:auto}.sheet-title{font-size:1.1rem;font-weight:700;color:var(--text);text-align:center}.form-group{display:flex;flex-direction:column;gap:.4rem}.form-label{font-size:.8rem;font-weight:600;color:var(--text-light);text-transform:uppercase;letter-spacing:.05em}.toggle-group{display:flex;gap:.5rem}.toggle-btn{flex:1;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.6rem;font-size:.875rem;font-weight:500;cursor:pointer;transition:var(--transition);color:var(--text)}.toggle-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.profile-header{display:flex;align-items:center;gap:1rem;padding-bottom:1rem;border-bottom:1px solid var(--border)}.profile-avatar{width:48px;height:48px;border-radius:50%;object-fit:cover}.profile-avatar-placeholder{width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.2rem}.profile-name{font-weight:700;font-size:1rem}.profile-email{font-size:.8rem;color:var(--text-light)}.admin-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;margin-top:1rem}.admin-title{font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-light);margin-bottom:.75rem}.user-list{list-style:none;display:flex;flex-direction:column;gap:.4rem;margin-bottom:.75rem}.user-item{display:flex;justify-content:space-between;align-items:center;font-size:.875rem;padding:.4rem 0;border-bottom:1px solid var(--border)}.onboarding-actions{display:flex;flex-direction:column;gap:.75rem;width:100%}.or-divider{display:flex;align-items:center;gap:.5rem;color:var(--text-light);font-size:.8rem}.or-divider:before,.or-divider:after{content:"";flex:1;height:1px;background:var(--border)}