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var(--border-color);border-radius:var(--radius-xl);padding:var(--space-6);cursor:pointer;transition:all var(--transition-base);color:inherit;text-decoration:none;display:block}.group-card:hover{border-color:var(--color-primary-300);box-shadow:var(--shadow-lg);transform:translateY(-2px)}[data-theme=dark] .group-card:hover{border-color:var(--color-primary-700)}.group-card-header{margin-bottom:var(--space-4);justify-content:space-between;align-items:center;display:flex}.group-card-icon{border-radius:var(--radius-lg);background:linear-gradient(135deg, var(--color-primary-500), var(--color-accent-500));color:#fff;justify-content:center;align-items:center;width:44px;height:44px;display:flex}.group-card-name{font-size:var(--text-lg);font-weight:700;font-family:var(--font-display);margin-bottom:var(--space-1)}.group-card-desc{font-size:var(--text-sm);color:var(--text-secondary);margin-bottom:var(--space-4);-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.group-card-footer{padding-top:var(--space-4);border-top:1px solid var(--border-color);justify-content:space-between;align-items:center;display:flex}.group-card-members{align-items:center;gap:var(--space-2);font-size:var(--text-sm);color:var(--text-secondary);display:flex}.group-card-balance{font-size:var(--text-sm);font-weight:600}.create-group-card{background:var(--bg-secondary);border:2px dashed var(--border-color);border-radius:var(--radius-xl);padding:var(--space-8);justify-content:center;align-items:center;gap:var(--space-3);cursor:pointer;transition:all var(--transition-base);min-height:200px;color:var(--text-secondary);flex-direction:column;text-decoration:none;display:flex}.create-group-card:hover{border-color:var(--color-primary-400);color:var(--color-primary-600);background:var(--color-primary-50)}[data-theme=dark] .create-group-card:hover{color:var(--color-primary-400);background:#10b9810d}.create-group-icon{border-radius:var(--radius-full);border:2px dashed var(--border-color);width:56px;height:56px;transition:all var(--transition-base);justify-content:center;align-items:center;display:flex}.create-group-card:hover .create-group-icon{border-color:var(--color-primary-400)}.create-group-text{font-weight:600;font-size:var(--text-base)}.group-detail-header{justify-content:space-between;align-items:flex-start;gap:var(--space-4);margin-bottom:var(--space-8);flex-wrap:wrap;display:flex}.group-detail-info{flex:1}.group-detail-meta{align-items:center;gap:var(--space-4);margin-top:var(--space-3);flex-wrap:wrap;display:flex}.group-detail-meta-item{align-items:center;gap:var(--space-2);font-size:var(--text-sm);color:var(--text-secondary);display:flex}.group-detail-actions{gap:var(--space-3);display:flex}.tabs{gap:var(--space-1);border-bottom:1px solid var(--border-color);margin-bottom:var(--space-6);display:flex;overflow-x:auto}.tab{padding:var(--space-3) var(--space-5);font-size:var(--text-sm);color:var(--text-secondary);transition:all var(--transition-fast);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-bottom:2px solid #0000;font-weight:500}.tab:hover{color:var(--text-primary)}.tab.active{color:var(--color-primary-600);border-bottom-color:var(--color-primary-500)}[data-theme=dark] .tab.active{color:var(--color-primary-400)}.expense-list{gap:var(--space-3);flex-direction:column;display:flex}.expense-item{align-items:center;gap:var(--space-4);padding:var(--space-4) var(--space-5);background:var(--surface-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);transition:all var(--transition-fast);display:flex}.expense-item:hover{border-color:var(--border-color-hover);box-shadow:var(--shadow-sm)}.expense-category-icon{border-radius:var(--radius-lg);background:var(--bg-tertiary);width:40px;height:40px;color:var(--text-secondary);flex-shrink:0;justify-content:center;align-items:center;display:flex}.expense-info{flex:1;min-width:0}.expense-description{font-weight:600;font-size:var(--text-base);margin-bottom:var(--space-1)}.expense-meta{font-size:var(--text-xs);color:var(--text-secondary)}.expense-amount{text-align:right;flex-shrink:0}.expense-amount-value{font-weight:700;font-size:var(--text-lg);font-family:var(--font-display)}.expense-amount-label{font-size:var(--text-xs);color:var(--text-secondary)}.balances-grid{gap:var(--space-4);grid-template-columns:repeat(auto-fill,minmax(280px,1fr));display:grid}.balance-card{align-items:center;gap:var(--space-4);padding:var(--space-5);background:var(--surface-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);display:flex}.balance-arrow{color:var(--color-primary-500);flex-shrink:0}.balance-info{flex:1;min-width:0}.balance-names{font-size:var(--text-sm)}.balance-from{color:var(--color-danger);font-weight:600}.balance-to{color:var(--color-success);font-weight:600}.balance-amount{font-weight:800;font-size:var(--text-lg);font-family:var(--font-display);color:var(--text-primary);flex-shrink:0}.expense-form{gap:var(--space-5);flex-direction:column;max-width:500px;display:flex}.expense-form-split{gap:var(--space-3);flex-direction:column;display:flex}.split-option{align-items:center;gap:var(--space-3);padding:var(--space-4);border:1.5px solid var(--border-color);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);display:flex}.split-option:hover{border-color:var(--border-color-hover)}.split-option.active{border-color:var(--color-primary-500);background:var(--color-primary-50)}[data-theme=dark] .split-option.active{background:#10b98114}.split-option-radio{border-radius:var(--radius-full);border:2px solid var(--border-color);width:20px;height:20px;transition:all var(--transition-fast);flex-shrink:0;justify-content:center;align-items:center;display:flex}.split-option.active .split-option-radio{border-color:var(--color-primary-500)}.split-option.active .split-option-radio:after{content:"";border-radius:var(--radius-full);background:var(--color-primary-500);width:10px;height:10px}.split-option-info{flex:1}.split-option-title{font-weight:600;font-size:var(--text-sm)}.split-option-desc{font-size:var(--text-xs);color:var(--text-secondary)}@media (width<=768px){.dashboard-stats{grid-template-columns:1fr 1fr}.groups-grid{grid-template-columns:1fr}.group-detail-header{flex-direction:column}.group-detail-actions{width:100%}.group-detail-actions .btn{flex:1}.auth-form-row{grid-template-columns:1fr}}.btn{justify-content:center;align-items:center;gap:var(--space-2);font-family:var(--font-sans);border-radius:var(--radius-lg);transition:all var(--transition-base);cursor:pointer;white-space:nowrap;border:none;outline:none;font-weight:600;text-decoration:none;display:inline-flex;position:relative;overflow:hidden}.btn:after{content:"";opacity:0;transition:opacity var(--transition-fast);background:linear-gradient(#fff3,#0000);position:absolute;inset:0}.btn:hover:after{opacity:1}.btn:active{transform:scale(.97)}.btn-sm{padding:var(--space-2) var(--space-4);font-size:var(--text-sm);height:36px}.btn-md{padding:var(--space-3) var(--space-6);font-size:var(--text-base);height:44px}.btn-lg{padding:var(--space-4) var(--space-8);font-size:var(--text-lg);height:52px}.btn-primary{background:linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));color:#fff;box-shadow:var(--shadow-md), 0 0 0 0 #10b98166}.btn-primary:hover{background:linear-gradient(135deg, var(--color-primary-400), var(--color-primary-500));box-shadow:var(--shadow-lg), 0 0 20px #10b9814d;transform:translateY(-1px)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--border-color);border-color:var(--border-color-hover);transform:translateY(-1px)}.btn-ghost{color:var(--text-secondary);background:0 0}.btn-ghost:hover{background:var(--bg-tertiary);color:var(--text-primary)}.btn-danger{background:linear-gradient(135deg, var(--color-danger), #dc2626);color:#fff}.btn-danger:hover{box-shadow:var(--shadow-lg), 0 0 20px #ef44444d;transform:translateY(-1px)}.btn-accent{background:linear-gradient(135deg, var(--color-accent-500), var(--color-accent-600));color:#fff;box-shadow:var(--shadow-md)}.btn-accent:hover{box-shadow:var(--shadow-lg), var(--shadow-glow-accent);transform:translateY(-1px)}.btn-outline{color:var(--color-primary-600);border:2px solid var(--color-primary-500);background:0 0}.btn-outline:hover{background:var(--color-primary-50)}[data-theme=dark] .btn-outline:hover{background:#10b9811a}.btn-full{width:100%}.btn-loading{pointer-events:none;opacity:.7}.btn-loading .btn-spinner{animation:.8s linear infinite spin}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.btn:disabled:after{display:none}.btn-icon{padding:var(--space-2);border-radius:var(--radius-lg);width:40px;height:40px}.input-wrapper{gap:var(--space-2);flex-direction:column;display:flex}.input-label{font-size:var(--text-sm);color:var(--text-primary);font-weight:600}.input-field-wrapper{align-items:center;display:flex;position:relative}.input-field{width:100%;padding:var(--space-3) var(--space-4);font-size:var(--text-base);font-family:var(--font-sans);color:var(--text-primary);background:var(--bg-primary);border:1.5px solid var(--border-color);border-radius:var(--radius-lg);transition:all var(--transition-base);outline:none;height:44px}.input-field:hover{border-color:var(--border-color-hover)}.input-field:focus{border-color:var(--color-primary-500);box-shadow:0 0 0 3px #10b98126}.input-field::placeholder{color:var(--text-tertiary)}.input-field.input-error{border-color:var(--color-danger)}.input-field.input-error:focus{box-shadow:0 0 0 3px #ef444426}.input-icon-left{left:var(--space-3);color:var(--text-tertiary);pointer-events:none;position:absolute}.input-field.has-icon-left{padding-left:var(--space-10)}.input-icon-right{right:var(--space-3);color:var(--text-tertiary);cursor:pointer;position:absolute}.input-error-text{font-size:var(--text-xs);color:var(--color-danger);margin-top:var(--space-1)}.input-hint{font-size:var(--text-xs);color:var(--text-tertiary)}.textarea-field{resize:vertical;height:auto;min-height:100px}.select-field{appearance:none;padding-right:var(--space-10);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;background-size:16px}.card{background:var(--surface-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--space-6);transition:all var(--transition-base)}.card-hover:hover{border-color:var(--color-primary-300);box-shadow:var(--shadow-lg);transform:translateY(-2px)}[data-theme=dark] .card-hover:hover{border-color:var(--color-primary-700)}.card-header{margin-bottom:var(--space-4);justify-content:space-between;align-items:center;display:flex}.card-title{font-size:var(--text-lg);font-weight:700;font-family:var(--font-display)}.card-body{color:var(--text-secondary)}.card-footer{margin-top:var(--space-4);padding-top:var(--space-4);border-top:1px solid var(--border-color);justify-content:space-between;align-items:center;display:flex}.card-glass{-webkit-backdrop-filter:blur(16px);background:#ffffff14;border:1px solid #ffffff1f}.modal-overlay{background:var(--surface-overlay);z-index:var(--z-modal-backdrop);padding:var(--space-4);justify-content:center;align-items:center;animation:.2s ease-out fadeIn;display:flex;position:fixed;inset:0}.modal-content{background:var(--surface-elevated);border-radius:var(--radius-2xl);padding:var(--space-8);width:100%;max-width:480px;max-height:90vh;z-index:var(--z-modal);box-shadow:var(--shadow-xl);border:1px solid var(--border-color);animation:.3s ease-out scaleIn;overflow-y:auto}.modal-header{margin-bottom:var(--space-6);justify-content:space-between;align-items:center;display:flex}.modal-title{font-size:var(--text-xl);font-weight:700;font-family:var(--font-display)}.modal-close{border-radius:var(--radius-lg);width:36px;height:36px;color:var(--text-secondary);transition:all var(--transition-fast);justify-content:center;align-items:center;display:flex}.modal-close:hover{background:var(--bg-tertiary);color:var(--text-primary)}.modal-body{margin-bottom:var(--space-6)}.modal-footer{gap:var(--space-3);justify-content:flex-end;display:flex}.avatar{border-radius:var(--radius-full);font-weight:700;font-family:var(--font-display);color:#fff;background:linear-gradient(135deg, var(--color-primary-400), var(--color-accent-500));flex-shrink:0;justify-content:center;align-items:center;display:inline-flex;overflow:hidden}.avatar-sm{width:32px;height:32px;font-size:var(--text-xs)}.avatar-md{width:40px;height:40px;font-size:var(--text-sm)}.avatar-lg{width:48px;height:48px;font-size:var(--text-base)}.avatar-xl{width:64px;height:64px;font-size:var(--text-xl)}.avatar img{object-fit:cover;width:100%;height:100%}.avatar-group{display:flex}.avatar-group .avatar{border:2px solid var(--bg-primary);margin-left:-8px}.avatar-group .avatar:first-child{margin-left:0}.badge{align-items:center;gap:var(--space-1);padding:var(--space-1) var(--space-3);font-size:var(--text-xs);border-radius:var(--radius-full);font-weight:600;display:inline-flex}.badge-success{background:var(--color-primary-100);color:var(--color-primary-800)}[data-theme=dark] .badge-success{color:var(--color-primary-400);background:#10b98126}.badge-danger{color:#991b1b;background:#fef2f2}[data-theme=dark] .badge-danger{color:#fca5a5;background:#ef444426}.badge-warning{color:#92400e;background:#fffbeb}[data-theme=dark] .badge-warning{color:#fbbf24;background:#f59e0b26}.badge-info{color:#1e40af;background:#eff6ff}[data-theme=dark] .badge-info{color:#93c5fd;background:#3b82f626}.spinner-wrapper{padding:var(--space-8);justify-content:center;align-items:center;display:flex}.spinner{border:3px solid var(--border-color);border-top-color:var(--color-primary-500);border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}.spinner-sm{border-width:2px;width:20px;height:20px}.empty-state{padding:var(--space-16) var(--space-8);text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex}.empty-state-icon{border-radius:var(--radius-2xl);background:var(--bg-tertiary);width:64px;height:64px;margin-bottom:var(--space-4);color:var(--text-tertiary);justify-content:center;align-items:center;display:flex}.empty-state-title{font-size:var(--text-lg);margin-bottom:var(--space-2);font-weight:600}.empty-state-text{color:var(--text-secondary);font-size:var(--text-sm);max-width:360px;margin-bottom:var(--space-6)}.divider{align-items:center;gap:var(--space-4);color:var(--text-tertiary);font-size:var(--text-sm);display:flex}.divider:before,.divider:after{content:"";background:var(--border-color);flex:1;height:1px}.skeleton{background:linear-gradient(90deg, var(--bg-tertiary) 25%, var(--border-color) 50%, var(--bg-tertiary) 75%);border-radius:var(--radius-md);background-size:200% 100%;animation:1.5s ease-in-out infinite shimmer}.skeleton-text{height:14px;margin-bottom:var(--space-2)}.skeleton-title{width:60%;height:24px;margin-bottom:var(--space-3)}.skeleton-avatar{border-radius:var(--radius-full);width:40px;height:40px}.toast-container{top:var(--space-4);right:var(--space-4);z-index:var(--z-toast);gap:var(--space-3);flex-direction:column;display:flex;position:fixed}.toast{padding:var(--space-4) var(--space-5);border-radius:var(--radius-lg);font-size:var(--text-sm);align-items:center;gap:var(--space-3);min-width:300px;max-width:420px;box-shadow:var(--shadow-lg);border:1px solid;font-weight:500;animation:.3s ease-out slideInRight;display:flex}.toast-success{background:var(--color-primary-50);color:var(--color-primary-800);border-color:var(--color-primary-200)}.toast-error{color:#991b1b;background:#fef2f2;border-color:#fecaca}.toast-info{color:#1e40af;background:#eff6ff;border-color:#bfdbfe}[data-theme=dark] .toast-success{color:var(--color-primary-300);background:#10b9811f;border-color:#10b98140}[data-theme=dark] .toast-error{color:#fca5a5;background:#ef44441f;border-color:#ef444440}[data-theme=dark] .toast-info{color:#93c5fd;background:#3b82f61f;border-color:#3b82f640}