*,:before,:after{box-sizing:border-box}body{margin:0}#root{width:100%;min-height:100vh}:root{--primary:#6366f1;--primary-dark:#4f46e5;--primary-light:#e0e7ff;--success:#10b981;--success-light:#d1fae5;--danger:#ef4444;--danger-light:#fee2e2;--warning:#f59e0b;--bg:#f1f5f9;--surface:#fff;--surface-2:#f8fafc;--border:#e2e8f0;--border-dark:#cbd5e1;--text:#1e293b;--text-muted:#64748b;--text-xs:#94a3b8;--sidebar-w:240px;--radius-sm:6px;--radius:10px;--radius-lg:16px;--shadow-sm:0 1px 2px #0000000f;--shadow:0 1px 3px #00000014, 0 1px 2px #0000000f;--shadow-md:0 4px 6px -1px #00000014, 0 2px 4px -2px #0000000f;--shadow-lg:0 10px 15px -3px #00000014, 0 4px 6px -4px #0000000d;--transition:.15s ease}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px;line-height:1.5}button{cursor:pointer;font:inherit;background:0 0;border:none}input,select,textarea{font:inherit}a{color:inherit;text-decoration:none}.auth-shell{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.auth-card{background:var(--surface);border-radius:var(--radius-lg);width:100%;max-width:420px;box-shadow:var(--shadow-lg);padding:40px 36px}.auth-logo{text-align:center;margin-bottom:28px}.auth-logo-icon{margin-bottom:8px;font-size:40px;display:block}.auth-logo h1{color:var(--text);font-size:22px;font-weight:700}.auth-logo p{color:var(--text-muted);margin-top:4px;font-size:13px}.tab-bar{background:var(--bg);border-radius:var(--radius);gap:4px;margin-bottom:24px;padding:4px;display:flex}.tab-btn{border-radius:var(--radius-sm);color:var(--text-muted);transition:all var(--transition);flex:1;padding:8px 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12px;font-size:13px}.modal-hint{color:var(--text-muted);background:var(--surface-2);border-radius:var(--radius-sm);border-left:3px solid var(--primary);padding:10px 12px;font-size:13px}.btn-primary{background:var(--primary);color:#fff;border-radius:var(--radius-sm);transition:background var(--transition), transform var(--transition);white-space:nowrap;justify-content:center;align-items:center;gap:6px;padding:10px 18px;font-size:14px;font-weight:600;display:inline-flex}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:active{transform:scale(.98)}.btn-primary:disabled{opacity:.55;cursor:not-allowed}.btn-full{width:100%}.btn-secondary{background:var(--surface);color:var(--text);border:1.5px solid var(--border);border-radius:var(--radius-sm);transition:background var(--transition), border-color var(--transition);white-space:nowrap;justify-content:center;align-items:center;gap:6px;padding:10px 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var(--transition);flex-direction:column;display:flex;position:fixed;inset:0 auto 0 0}.sidebar-brand{border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:20px 18px;display:flex}.brand-icon{font-size:22px}.brand-name{color:var(--text);font-size:16px;font-weight:700}.sidebar-nav{flex-direction:column;flex:1;gap:2px;padding:12px 10px;display:flex}.nav-item{border-radius:var(--radius-sm);color:var(--text-muted);transition:background var(--transition), color var(--transition);text-align:left;align-items:center;gap:10px;width:100%;padding:10px 12px;font-size:14px;font-weight:500;display:flex}.nav-item:hover{background:var(--bg);color:var(--text)}.nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}.nav-icon{text-align:center;flex-shrink:0;width:20px;font-size:17px}.sidebar-footer{border-top:1px solid var(--border);flex-direction:column;gap:10px;padding:16px;display:flex}.user-chip{align-items:center;gap:10px;display:flex}.user-avatar{background:var(--primary);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;font-size:14px;font-weight:700;display:flex}.user-info{flex-direction:column;min-width:0;display:flex}.user-name{color:var(--text);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:600;overflow:hidden}.user-email{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;font-size:11px;overflow:hidden}.logout-btn{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-muted);text-align:center;transition:background var(--transition), color var(--transition);padding:8px 12px;font-size:13px}.logout-btn:hover{background:var(--danger-light);color:var(--danger);border-color:var(--danger-light)}.mobile-topbar{background:var(--surface);border-bottom:1px solid 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solid var(--border);border-top-color:var(--primary);border-radius:50%;width:32px;height:32px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.stat-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px;margin-bottom:24px;display:grid}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);flex-direction:column;gap:6px;padding:18px 20px;display:flex}.stat-card.stat-primary{border-color:var(--primary);background:linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%)}.stat-card.stat-primary .stat-label,.stat-card.stat-primary .stat-value{color:#fff}.stat-card.stat-success{border-color:var(--success)}.stat-card.stat-success .stat-value{color:var(--success)}.stat-card.stat-danger{border-color:var(--danger)}.stat-card.stat-danger 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12px;font-size:13px}.filter-select:focus{border-color:var(--primary)}.label-chips{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.label-chip{background:var(--surface);border:1.5px solid var(--border);color:var(--text);border-radius:20px;align-items:center;gap:6px;padding:4px 10px 4px 8px;font-size:12px;font-weight:500;display:inline-flex}.label-chip-del{color:var(--text-muted);transition:color var(--transition);padding:0 2px;font-size:11px;line-height:1}.label-chip-del:hover{color:var(--danger)}.label-dot{border-radius:50%;flex-shrink:0;width:8px;height:8px;display:inline-block}.label-badge{border-radius:20px;align-items:center;gap:5px;padding:3px 9px 3px 6px;font-size:12px;font-weight:600;display:inline-flex}.table-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden}.table-controls{border-bottom:1px solid var(--border);flex-wrap:wrap;gap:10px;padding:12px 16px;display:flex}.table-scroll{overflow-x:auto}.data-table{border-collapse:collapse;width:100%}.data-table th{background:var(--surface-2);text-align:left;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border);white-space:nowrap;padding:11px 16px;font-size:11px;font-weight:700}.data-table td{border-bottom:1px solid var(--border);vertical-align:middle;padding:13px 16px;font-size:13px}.data-table tbody tr:last-child td{border-bottom:none}.data-table tbody tr:hover{background:var(--surface-2)}.text-right{text-align:right}.text-muted{color:var(--text-muted)}.text-danger{color:var(--danger)}.text-success{color:var(--success)}.amount-cell{font-variant-numeric:tabular-nums;font-weight:600}.type-badge{border-radius:20px;padding:3px 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6px;font-size:10px;font-weight:600}.group-card-footer{justify-content:space-between;align-items:center;display:flex}.group-member-count{color:var(--text-muted);font-size:12px}.member-avatars{display:flex}.member-avatar-sm{color:#fff;border:2px solid var(--surface);border-radius:50%;justify-content:center;align-items:center;width:26px;height:26px;margin-left:-6px;font-size:11px;font-weight:700;display:flex}.member-avatar-sm:first-child{margin-left:0}.member-avatar-more{background:var(--bg);color:var(--text-muted);border-color:var(--border);font-size:10px}.group-invite-row{border-top:1px solid var(--border);align-items:center;gap:8px;padding-top:10px;display:flex}.invite-label{color:var(--text-muted);font-size:11px}.invite-code{color:var(--primary);background:var(--primary-light);border-radius:var(--radius-sm);letter-spacing:1.5px;padding:2px 8px;font-family:Courier 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var(--border);border-radius:var(--radius);color:var(--text-muted);flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:20px;padding:12px 16px;font-size:13px;display:flex}.btn-copy{background:var(--primary-light);color:var(--primary);border-radius:var(--radius-sm);transition:background var(--transition);padding:4px 12px;font-size:12px;font-weight:600}.btn-copy:hover{background:var(--primary);color:#fff}.tab-bar-inline{border-bottom:1px solid var(--border);margin-bottom:16px;display:flex}.tab-btn-inline{color:var(--text-muted);transition:color var(--transition), border-color var(--transition);border-bottom:2px solid #0000;margin-bottom:-1px;padding:10px 20px;font-size:14px;font-weight:500}.tab-btn-inline:hover{color:var(--text)}.tab-btn-inline.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}.members-list{flex-direction:column;display:flex}.member-row{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:14px 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var(--transition);flex:1;padding:10px;font-size:13px;font-weight:500}.type-toggle-btn.active-expense{background:var(--danger-light);color:var(--danger);border-color:var(--danger)}.type-toggle-btn.active-contribution{background:var(--success-light);color:var(--success);border-color:var(--success)}.color-picker{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.color-swatch{width:28px;height:28px;transition:transform var(--transition), border-color var(--transition);border:2px solid #0000;border-radius:50%}.color-swatch:hover{transform:scale(1.15)}.color-swatch.selected{border-color:var(--text);transform:scale(1.1)}.color-input{border:2px solid var(--border);cursor:pointer;border-radius:50%;width:28px;height:28px;padding:0}.modal-overlay{z-index:500;background:#00000073;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.modal-box{background:var(--surface);border-radius:var(--radius-lg);width:100%;max-width:480px;box-shadow:var(--shadow-lg);animation:.15s modal-in}@keyframes modal-in{0%{opacity:0;transform:scale(.96)translateY(-8px)}to{opacity:1;transform:none}}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:20px 24px 16px;display:flex}.modal-title{font-size:16px;font-weight:700}.modal-close{background:var(--bg);width:28px;height:28px;color:var(--text-muted);transition:background var(--transition), color var(--transition);border-radius:50%;justify-content:center;align-items:center;font-size:13px;display:flex}.modal-close:hover{background:var(--danger-light);color:var(--danger)}.modal-body{padding:20px 24px}.modal-footer{justify-content:flex-end;gap:10px;padding-top:4px;display:flex}@media (width<=900px){.page{padding:20px}.stat-grid{grid-template-columns:repeat(2,1fr)}.groups-grid{grid-template-columns:1fr}}@media (width<=640px){.sidebar{box-shadow:var(--shadow-lg);transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay{display:block}.mobile-topbar{display:flex}.main-content{margin-left:0;padding-top:56px;padding-bottom:70px}.bottom-nav{background:var(--surface);border-top:1px solid var(--border);z-index:100;height:60px;display:flex;position:fixed;bottom:0;left:0;right:0}.bottom-nav-item{color:var(--text-muted);transition:color var(--transition);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;display:flex}.bottom-nav-item.active{color:var(--primary)}.bottom-nav-icon{font-size:20px}.bottom-nav-label{font-size:10px;font-weight:500}.page{padding:16px}.page-header{flex-direction:column;align-items:stretch}.page-actions{justify-content:flex-end}.stat-grid{grid-template-columns:1fr 1fr;gap:10px}.stat-value{font-size:18px}.field-row{grid-template-columns:1fr}.controls-row{flex-direction:column;align-items:stretch}.period-tabs{padding-bottom:2px;overflow-x:auto}.auth-card{padding:28px 20px}.modal-overlay{align-items:flex-end;padding:0}.modal-box{border-radius:var(--radius-lg) var(--radius-lg) 0 0;max-height:90vh;overflow-y:auto}}