@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Plus+Jakarta+Sans:wght@600;700;800&display=swap";:root{--primary:#2f6a4f;--primary-dim:#225d44;--primary-container:#b2f0ce;--on-primary:#fff;--secondary:#4e6457;--tertiary:#2d676d;--on-tertiary-container:#1c5a5f;--tertiary-container:#b2edf3;--background:#f7faf5;--surface:#f7faf5;--surface-container-low:#eff5ef;--surface-container:#e8f0e9;--surface-container-high:#e2eae3;--surface-container-highest:#dbe5dd;--surface-lowest:#fff;--error:#a83836;--on-error:#fff;--on-surface:#2b352f;--on-surface-variant:#58615b;--outline:#737d76;--outline-variant:#737d761a;--font-display:"Plus Jakarta Sans", sans-serif;--font-body:"Inter", sans-serif;--radius-sm:8px;--radius-md:12px;--radius-lg:24px;--radius-full:9999px;--shadow-ambient:0 12px 32px #2b352f0f;--shadow-float:0 20px 48px #2b352f1f}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}body{font-family:var(--font-body);background-color:var(--background);color:var(--on-surface);min-height:100vh;line-height:1.5}h1,h2,h3{font-family:var(--font-display);font-weight:700}.auth-view{background:linear-gradient(160deg, var(--background) 0%, var(--surface-container) 100%);justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.auth-card{background:var(--surface-lowest);border-radius:var(--radius-lg);box-shadow:var(--shadow-float);text-align:center;width:100%;max-width:400px;padding:48px 36px}.auth-title{letter-spacing:-.03em;background:linear-gradient(135deg, var(--primary), var(--tertiary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:32px}.auth-subtitle{color:var(--on-surface-variant);margin-bottom:32px;font-size:14px}.auth-view .form-group{text-align:left}.btn-secondary-auth{border:2px solid var(--surface-container-high);border-radius:var(--radius-full);width:100%;font-family:var(--font-body);color:var(--primary);cursor:pointer;background:0 0;margin-top:8px;padding:14px;font-size:14px;font-weight:600;transition:background .2s}.btn-secondary-auth:hover{background:var(--surface-container-low)}.auth-divider{color:var(--on-surface-variant);align-items:center;gap:12px;margin:20px 0;font-size:13px;display:flex}.auth-divider:before,.auth-divider:after{content:"";background:var(--surface-container-high);flex:1;height:1px}.btn-google{border:2px solid var(--surface-container-high);background:var(--surface-lowest);border-radius:var(--radius-full);width:100%;font-family:var(--font-body);color:var(--on-surface);cursor:pointer;justify-content:center;align-items:center;gap:10px;padding:14px;font-size:14px;font-weight:600;transition:background .2s,box-shadow .2s;display:flex}.btn-google:hover{background:var(--surface-container-low);box-shadow:var(--shadow-ambient)}.auth-error{color:var(--error);min-height:20px;margin-top:16px;font-size:13px}.app-container{max-width:600px;margin:0 auto;position:relative}#main-app{flex-direction:column;min-height:100vh;display:flex}#main-app>main{flex:1;padding-bottom:80px}header{z-index:10;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#f7faf5d9;padding:32px 24px 16px;position:sticky;top:0}.header-top{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.header-top h1{letter-spacing:-.02em;margin-bottom:2px;font-size:24px}.user-greeting{color:var(--on-surface-variant);margin-top:-4px;font-size:13px;font-weight:400}.header-actions{align-items:center;gap:8px;display:flex}.btn-icon{background:var(--surface-container-high);border-radius:var(--radius-full);cursor:pointer;border:none;justify-content:center;align-items:center;width:36px;height:36px;font-size:16px;transition:background .2s;display:flex}.btn-icon:hover{background:var(--surface-container-highest)}.btn-icon-error{background:var(--surface-container-high);border-radius:var(--radius-full);cursor:pointer;width:36px;height:36px;color:var(--on-surface-variant);border:none;justify-content:center;align-items:center;transition:all .2s;display:flex}.btn-icon-error:hover{background:var(--error);color:#fff}.group-selector{gap:8px;margin-bottom:12px;display:flex}.group-selector select{background:var(--surface-container);border-radius:var(--radius-md);font-family:var(--font-body);color:var(--on-surface);cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2358615b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;border:none;flex:1;padding:10px 16px;font-size:14px}.btn-small{background:linear-gradient(135deg, var(--primary), var(--primary-dim));color:#fff;border-radius:var(--radius-md);font-family:var(--font-body);cursor:pointer;white-space:nowrap;border:none;padding:10px 16px;font-size:13px;font-weight:600;transition:opacity .2s}.btn-small:hover{opacity:.9}.tabs-container{background:var(--surface-container-high);border-radius:var(--radius-full);padding:4px;display:flex}.tab-btn{border-radius:var(--radius-full);font-family:var(--font-body);color:var(--secondary);cursor:pointer;background:0 0;border:none;flex:1;padding:10px;font-size:14px;font-weight:600;transition:all .2s}.tab-btn.active{background:var(--primary-container);color:var(--primary)}.view-section{padding:16px 24px 0;display:none}.view-section.active{animation:.3s fadeIn;display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.expense-item{background:var(--surface-lowest);border-radius:var(--radius-md);box-shadow:var(--shadow-ambient);cursor:pointer;justify-content:space-between;align-items:center;margin-bottom:10px;padding:20px;transition:transform .15s;display:flex}.expense-item:active{transform:scale(.98)}.expense-info .desc{margin-bottom:2px;font-size:15px;font-weight:600}.expense-info .meta{color:var(--on-surface-variant);font-size:13px}.expense-amount{text-align:right}.expense-amount .value{font-family:var(--font-display);font-size:17px;font-weight:700}.expense-amount .payer{color:var(--on-surface-variant);font-size:12px}.balance-card{background:var(--surface-container-low);border-radius:var(--radius-lg);margin-bottom:16px;padding:24px}.balance-card h2{margin-bottom:12px;font-size:18px}.balance-item{justify-content:space-between;align-items:center;padding:14px 0;display:flex}.balance-item:not(:last-child){border-bottom:1px solid var(--outline-variant)}.person-tag{font-size:15px;font-weight:600}.status-chip{border-radius:var(--radius-full);padding:5px 12px;font-size:13px;font-weight:600}.status-chip.debt{color:var(--error);background:#fdf2f2}.status-chip.credit{color:var(--tertiary);background:#f0fdf4}.settlement-item{background:var(--surface-lowest);border-radius:var(--radius-md);align-items:center;gap:8px;margin-bottom:8px;padding:14px 16px;font-size:14px;display:flex}.settlement-item .arrow{color:var(--primary);font-weight:600}.fab{background:linear-gradient(135deg, var(--primary), var(--primary-dim));border-radius:var(--radius-full);color:#fff;cursor:pointer;z-index:100;border:none;justify-content:center;align-items:center;width:60px;height:60px;font-size:28px;transition:transform .2s;display:flex;position:fixed;bottom:32px;right:32px;box-shadow:0 8px 24px #2f6a4f4d}.fab:hover{transform:scale(1.05)}.fab:active{transform:scale(.93)}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:200;background:#2b352f66;justify-content:center;align-items:flex-end;width:100%;height:100%;display:none;position:fixed;top:0;left:0}.modal-content{background:var(--surface);border-radius:var(--radius-lg) var(--radius-lg) 0 0;width:100%;max-width:600px;padding:32px 24px 48px;transition:transform .3s cubic-bezier(.4,0,.2,1);transform:translateY(100%)}.modal-overlay.active{display:flex}.modal-overlay.active .modal-content{transform:translateY(0)}.modal-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.modal-header h2{font-size:22px}.close-btn{background:var(--surface-container-highest);border-radius:var(--radius-full);cursor:pointer;width:32px;height:32px;color:var(--on-surface-variant);border:none;justify-content:center;align-items:center;font-size:18px;display:flex}.form-group{margin-bottom:16px}.form-group label{color:var(--on-surface-variant);margin-bottom:6px;font-size:13px;font-weight:600;display:block}input,select{background:var(--surface-container);border-radius:var(--radius-md);width:100%;font-family:var(--font-body);color:var(--on-surface);border:none;padding:14px 16px;font-size:15px;transition:outline .15s}input:focus,select:focus{outline:2px solid var(--primary-container)}.participant-chip{background:var(--surface-container-low);border-radius:var(--radius-full);cursor:pointer;align-items:center;gap:6px;padding:8px 14px;font-size:14px;transition:background .15s;display:flex}.participant-chip:has(input:checked){background:var(--primary-container);color:var(--primary)}.participant-chip input[type=checkbox]{width:auto;accent-color:var(--primary)}.btn-primary{border-radius:var(--radius-full);background:linear-gradient(135deg, var(--primary), var(--primary-dim));color:#fff;cursor:pointer;border:none;width:100%;margin-top:8px;padding:16px;font-size:15px;font-weight:700;transition:opacity .2s}.btn-primary:hover{opacity:.92}.btn-delete{border-radius:var(--radius-full);width:100%;color:var(--error);cursor:pointer;background:0 0;border:none;margin-top:8px;padding:14px;font-size:14px;font-weight:600}.empty-state{text-align:center;color:var(--on-surface-variant);padding:48px 24px;font-size:14px}.confirm-modal-content{border-radius:var(--radius-lg);align-self:center;max-width:450px;margin-bottom:24px}.confirm-body-text{color:var(--on-surface-variant);margin-bottom:32px;font-size:15px;line-height:1.6}.modal-footer-actions{flex-direction:column;gap:12px;display:flex}@media (width>=481px){.confirm-modal-content{margin-bottom:0}}@media (width<=480px){.auth-card{padding:36px 24px}.fab{bottom:24px;right:24px}}.aef-logo{align-items:center;gap:4px;font-family:system-ui,-apple-system,sans-serif;text-decoration:none;display:inline-flex}.aef-lb{color:#8b5cf6;text-shadow:0 0 10px #8b5cf699;min-width:1ch;font-family:monospace;font-size:1rem;font-weight:900;transition:opacity .12s;display:inline-block}.aef-letters{letter-spacing:.08em;background:linear-gradient(135deg,#8b5cf6 0%,#06b6d4 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:1.1rem;font-weight:900}.aef-rb{color:#06b6d4;text-shadow:0 0 10px #06b6d499;font-family:monospace;font-size:1rem;font-weight:900}.aef-sub{color:#9ca3af;margin-left:3px;font-size:.875rem;font-weight:600}.aef-gradient{background:linear-gradient(135deg,#8b5cf6 0%,#06b6d4 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-weight:700}.user-badge{background:var(--surface-container);border-radius:var(--radius-full);cursor:default;align-items:center;gap:7px;max-width:160px;padding:4px 12px 4px 4px;transition:background .2s;display:flex;overflow:hidden}.user-badge:hover{background:var(--surface-container-high)}.user-avatar{background:linear-gradient(135deg, var(--primary), var(--tertiary));color:#fff;background-position:50%;background-size:cover;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:12px;font-weight:700;display:flex;overflow:hidden}.user-display-name{color:var(--on-surface);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:600;overflow:hidden}.aef-brand-badge{opacity:.75;justify-content:center;align-items:center;gap:6px;margin-top:28px;transition:opacity .2s;display:flex}.aef-brand-badge:hover{opacity:1}.aef-brand-label{color:#9ca3af;font-size:.75rem;font-family:var(--font-body,sans-serif)}.aef-footer{opacity:.6;justify-content:center;align-items:center;gap:6px;padding:16px 0 24px;transition:opacity .2s;display:flex}.aef-footer:hover{opacity:1}.aef-footer .aef-brand-label{font-size:.7rem}