:root{--color-bg-primary: #3A4850;--color-bg-secondary: #4A5A62;--color-bg-tertiary: #5A6A72;--color-bg-card: #4A5A62;--color-text-primary: #E0D0B6;--color-text-secondary: #C4B49A;--color-text-muted: #8B9EA5;--color-accent: #CC9E4C;--color-accent-hover: #D9AF5F;--color-accent-dim: rgba(204, 158, 76, .25);--color-success: #7CB87C;--color-success-bg: rgba(124, 184, 124, .2);--color-danger: #A04433;--color-danger-bg: rgba(107, 39, 23, .3);--color-warning: #CC9E4C;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .4);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--touch-target: 44px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.5;min-height:100vh;min-height:100dvh;overscroll-behavior:none}#root{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.25;color:var(--color-text-primary)}h1{font-size:1.75rem}h2{font-size:1.375rem}h3{font-size:1.125rem}p{color:var(--color-text-secondary)}a{color:var(--color-accent);text-decoration:none}a:hover{color:var(--color-accent-hover)}input,textarea,select,button{font-family:inherit;font-size:1rem}input,textarea,select{width:100%;padding:.875rem 1rem;background:var(--color-bg-tertiary);border:1px solid transparent;border-radius:var(--radius-md);color:var(--color-text-primary);transition:border-color .15s,box-shadow .15s}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-dim)}input::placeholder{color:var(--color-text-muted)}input[type=number]{-webkit-appearance:textfield;appearance:textfield;-moz-appearance:textfield}input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}label{display:block;font-size:.875rem;font-weight:500;color:var(--color-text-secondary);margin-bottom:var(--space-xs)}button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);min-height:var(--touch-target);padding:.75rem 1.5rem;font-weight:500;border:none;border-radius:var(--radius-md);cursor:pointer;transition:background-color .15s,transform .1s}button:active,.btn:active{transform:scale(.98)}button:disabled,.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-accent);color:#442c1b;font-weight:600}.btn-primary:hover:not(:disabled){background:var(--color-accent-hover)}.btn-secondary{background:var(--color-bg-tertiary);color:var(--color-text-primary)}.btn-secondary:hover:not(:disabled){background:#6a7a82}.btn-danger{background:#6b2717;color:var(--color-text-primary)}.btn-danger:hover:not(:disabled){background:#8b3a2a}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover:not(:disabled){background:var(--color-bg-tertiary);color:var(--color-text-primary)}.btn-block{width:100%}.btn-sm{min-height:36px;padding:.5rem 1rem;font-size:.875rem}.card{background:var(--color-bg-card);border-radius:var(--radius-lg);padding:var(--space-lg);box-shadow:var(--shadow-sm)}.container{width:100%;max-width:480px;margin:0 auto;padding:var(--space-md)}.page{flex:1;display:flex;flex-direction:column;padding-top:var(--safe-top);padding-bottom:calc(var(--safe-bottom) + 80px)}.header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md);background:var(--color-bg-secondary);border-bottom:1px solid var(--color-bg-tertiary);position:sticky;top:0;z-index:100}.header-title{font-size:1.125rem;font-weight:600}.header-back{width:var(--touch-target);height:var(--touch-target);display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:var(--radius-full);color:var(--color-text-primary);cursor:pointer}.header-back svg{width:24px;height:24px;flex-shrink:0}.header-back:hover{background:var(--color-bg-tertiary)}.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--color-bg-secondary);border-top:1px solid var(--color-bg-tertiary);padding-bottom:var(--safe-bottom);z-index:100}.bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-sm) var(--space-xs);min-height:60px;color:var(--color-text-muted);font-size:.75rem;text-decoration:none}.bottom-nav a.active{color:var(--color-accent)}.bottom-nav svg{width:24px;height:24px;margin-bottom:2px}.auth-page{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;justify-content:center;padding:var(--space-xl)}.auth-logo{text-align:center;margin-bottom:var(--space-2xl)}.auth-logo h1{font-size:2rem;color:var(--color-accent);margin-top:var(--space-md)}.auth-logo svg{width:80px;height:80px}.auth-form{display:flex;flex-direction:column;gap:var(--space-md)}.auth-footer{text-align:center;margin-top:var(--space-xl);color:var(--color-text-muted)}.auth-footer a{color:var(--color-accent);font-weight:500}.form-group{display:flex;flex-direction:column;gap:var(--space-xs)}.form-error{color:#d35040;font-size:.875rem}.form-hint{color:var(--color-text-muted);font-size:.875rem}.list{display:flex;flex-direction:column}.list-item{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:var(--color-bg-card);border-bottom:1px solid var(--color-bg-tertiary);cursor:pointer;transition:background-color .15s}.list-item:first-child{border-radius:var(--radius-lg) var(--radius-lg) 0 0}.list-item:last-child{border-radius:0 0 var(--radius-lg) var(--radius-lg);border-bottom:none}.list-item:only-child{border-radius:var(--radius-lg)}.list-item:hover{background:var(--color-bg-tertiary)}.list-item-content{flex:1;min-width:0}.list-item-title{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.list-item-subtitle{font-size:.875rem;color:var(--color-text-muted)}.balance{font-weight:600;font-variant-numeric:tabular-nums}.balance-positive{color:var(--color-success)}.balance-negative{color:#d35040}.balance-zero{color:var(--color-text-muted)}.balances-summary{background:var(--color-bg-card);border-radius:var(--radius-lg);padding:var(--space-lg);margin-bottom:var(--space-lg)}.balances-summary h3{margin-bottom:var(--space-md);color:var(--color-text-secondary);font-size:.875rem;text-transform:uppercase;letter-spacing:.05em}.balance-item{display:flex;justify-content:space-between;align-items:center;padding:var(--space-sm) 0}.balance-item:not(:last-child){border-bottom:1px solid var(--color-bg-tertiary)}.activity-item{display:flex;gap:var(--space-md);padding:var(--space-md);background:var(--color-bg-card);border-bottom:1px solid var(--color-bg-tertiary)}.activity-icon{width:40px;height:40px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;flex-shrink:0}.activity-icon.expense{background:var(--color-accent-dim);color:var(--color-accent)}.activity-icon.settlement{background:var(--color-success-bg);color:var(--color-success)}.activity-content{flex:1;min-width:0}.activity-title{font-weight:500}.activity-meta{font-size:.875rem;color:var(--color-text-muted)}.activity-amount{font-weight:600;text-align:right;font-variant-numeric:tabular-nums}.empty-state{text-align:center;padding:var(--space-2xl);color:var(--color-text-muted)}.empty-state svg{width:64px;height:64px;margin-bottom:var(--space-md);opacity:.5}.empty-state h3{color:var(--color-text-secondary);margin-bottom:var(--space-sm)}.fab{position:fixed;bottom:calc(80px + var(--safe-bottom) + var(--space-md));right:var(--space-md);width:56px;height:56px;border-radius:var(--radius-full);background:var(--color-accent);color:#442c1b;box-shadow:var(--shadow-lg);z-index:50}.fab svg{width:24px;height:24px}.amount-input-wrapper{position:relative}.amount-input-wrapper .currency{position:absolute;left:1rem;top:50%;transform:translateY(-50%);font-size:1.25rem;font-weight:600;color:var(--color-text-muted)}.amount-input{padding-left:2.5rem;font-size:1.5rem;font-weight:600;text-align:right}.chip{display:inline-flex;align-items:center;padding:.25rem .75rem;background:var(--color-bg-tertiary);border-radius:var(--radius-full);font-size:.75rem;font-weight:500;color:var(--color-text-secondary)}.chip.active{background:var(--color-accent-dim);color:var(--color-accent)}.member-avatar{width:40px;height:40px;border-radius:var(--radius-full);background:var(--color-accent-dim);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.875rem;color:var(--color-accent);border:2px solid var(--color-accent)}.offline-banner{position:fixed;top:0;left:0;right:0;background:var(--color-warning);color:#442c1b;text-align:center;padding:var(--space-sm);font-weight:600;font-size:.875rem;z-index:1000}.loading-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;min-height:100dvh;color:var(--color-text-muted)}.skeleton{background:linear-gradient(90deg,var(--color-bg-secondary) 25%,var(--color-bg-tertiary) 50%,var(--color-bg-secondary) 75%);background-size:200% 100%;animation:skeleton-loading 1.5s infinite;border-radius:var(--radius-sm)}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.transfer-item{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-lg);background:var(--color-bg-card);border-radius:var(--radius-lg);margin-bottom:var(--space-md)}.transfer-arrow{color:var(--color-accent);font-size:1.5rem}.transfer-user{flex:1;text-align:center}.transfer-amount{font-size:1.25rem;font-weight:700;color:var(--color-accent)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-primary)}::-webkit-scrollbar-thumb{background:var(--color-bg-tertiary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:#6a7a82}::selection{background:var(--color-accent-dim);color:var(--color-text-primary)}.split-options{display:flex;gap:var(--space-sm);margin-bottom:var(--space-md)}.split-option{flex:1;padding:var(--space-md);background:var(--color-bg-tertiary);border:2px solid transparent;border-radius:var(--radius-md);text-align:center;cursor:pointer;transition:all .15s}.split-option.active{border-color:var(--color-accent);background:var(--color-accent-dim)}.member-checkbox{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:var(--color-bg-card);border-radius:var(--radius-md);margin-bottom:var(--space-sm);cursor:pointer}.member-checkbox input[type=checkbox]{width:24px;height:24px;accent-color:var(--color-accent)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:flex-end;z-index:200}.modal{width:100%;background:var(--color-bg-secondary);border-radius:var(--radius-xl) var(--radius-xl) 0 0;padding:var(--space-lg);padding-bottom:calc(var(--space-lg) + var(--safe-bottom));max-height:90vh;overflow-y:auto}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-lg)}.message{padding:var(--space-md);border-radius:var(--radius-md);margin-bottom:var(--space-md)}.message-success{background:var(--color-success-bg);color:var(--color-success)}.message-error{background:var(--color-danger-bg);color:#d35040}.invite-link-box{display:flex;gap:var(--space-sm);padding:var(--space-md);background:var(--color-bg-tertiary);border-radius:var(--radius-md);margin-bottom:var(--space-md)}.invite-link-box input{flex:1;background:transparent;border:none;padding:0;font-size:.875rem;color:var(--color-text-secondary)}.invite-link-box input:focus{box-shadow:none}.toggle-switch{position:relative;display:inline-block;width:52px;height:30px;flex-shrink:0}.toggle-switch input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--color-bg-tertiary);border-radius:var(--radius-full);transition:background-color .2s ease;border:1px solid transparent}.toggle-slider:before{content:"";position:absolute;left:3px;top:3px;width:22px;height:22px;border-radius:var(--radius-full);background:var(--color-text-primary);transition:transform .2s ease}.toggle-switch input:checked+.toggle-slider{background:var(--color-accent)}.toggle-switch input:checked+.toggle-slider:before{transform:translate(22px)}.toggle-switch input:disabled+.toggle-slider{opacity:.5}.settlement-toggle-row{display:flex;align-items:center;gap:var(--space-sm)}.settlement-toggle-label{flex:1;font-weight:500}.settlement-info-btn{width:30px;height:30px;min-height:30px;border-radius:var(--radius-full);padding:0;background:var(--color-bg-tertiary);color:var(--color-text-primary);font-weight:700;line-height:1}.settlement-info-wrap{position:relative;display:inline-flex}.settlement-info-popover{position:absolute;right:0;top:calc(100% + 8px);width:min(300px,78vw);padding:10px 12px;border-radius:var(--radius-md);background:var(--color-bg-primary);border:1px solid var(--color-bg-tertiary);box-shadow:var(--shadow-md);color:var(--color-text-primary);font-size:.8rem;line-height:1.45;z-index:20;opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .15s ease,transform .15s ease,visibility .15s ease}.settlement-info-popover:before{content:"";position:absolute;top:-6px;right:10px;width:10px;height:10px;background:var(--color-bg-primary);border-left:1px solid var(--color-bg-tertiary);border-top:1px solid var(--color-bg-tertiary);transform:rotate(45deg)}.settlement-info-popover strong{display:block;margin-bottom:6px}.settlement-info-popover p+p{margin-top:6px}.settlement-info-wrap.is-open .settlement-info-popover{opacity:1;visibility:visible;transform:translateY(0)}@media (hover: hover) and (pointer: fine){.settlement-info-wrap:hover .settlement-info-popover{opacity:1;visibility:visible;transform:translateY(0)}}@media (pointer: coarse) and (max-height: 760px){.settlement-info-popover{top:auto;bottom:calc(100% + 8px);transform:translateY(4px)}.settlement-info-popover:before{top:auto;bottom:-6px;border-left:none;border-top:none;border-right:1px solid var(--color-bg-tertiary);border-bottom:1px solid var(--color-bg-tertiary)}}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-md)}.section-title{font-size:.875rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.mt-md{margin-top:var(--space-md)}.mb-md{margin-bottom:var(--space-md)}.mb-lg{margin-bottom:var(--space-lg)}.mb-sm{margin-bottom:var(--space-sm)}.gap-sm{gap:var(--space-sm)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.w-full{width:100%}.nav-btn{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-sm) var(--space-xs);min-height:60px;color:var(--color-text-muted);font-size:.75rem;text-decoration:none;background:transparent;border:none;cursor:pointer;transition:color .15s}.nav-btn svg{width:24px;height:24px;margin-bottom:2px}.nav-btn.active{color:var(--color-accent)}.nav-btn:hover:not(.nav-btn-center){color:var(--color-text-primary)}.nav-btn-center{background:var(--color-accent);color:#442c1b;border-radius:var(--radius-full);width:56px;height:56px;min-height:56px;flex:0 0 56px;margin:0 var(--space-md);margin-top:-12px;box-shadow:var(--shadow-md)}.nav-btn-center:hover{background:var(--color-accent-hover)}.nav-btn-center svg{width:28px;height:28px;margin-bottom:0}.add-menu-options{display:flex;flex-direction:column;gap:var(--space-md)}.add-menu-option{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-lg);background:var(--color-bg-tertiary);border:none;border-radius:var(--radius-lg);cursor:pointer;text-align:left;transition:background .15s}.add-menu-option:hover{background:#6a7a82}.add-menu-icon{width:48px;height:48px;border-radius:var(--radius-full);background:var(--color-accent-dim);display:flex;align-items:center;justify-content:center;color:var(--color-accent);flex-shrink:0}.add-menu-icon svg{width:24px;height:24px}.add-menu-text{flex:1}.add-menu-title{font-weight:600;color:var(--color-text-primary);margin-bottom:2px}.add-menu-subtitle{font-size:.875rem;color:var(--color-text-muted)}.activity-actions{display:flex;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:var(--color-bg-tertiary);border-bottom:1px solid var(--color-bg-primary)}.activity-actions .btn{flex:1}