@import"https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,400;0,500;0,600;0,700&family=JetBrains+Mono:wght@500&display=swap";:root{--color-primary: #f59e0b;--color-primary-dark: #d97706;--color-primary-glow: rgba(245, 158, 11, .15);--color-secondary: #94a3b8;--color-success: #10b981;--color-success-glow: rgba(16, 185, 129, .15);--color-error: #ef4444;--color-error-glow: rgba(239, 68, 68, .15);--color-warning: #f59e0b;--color-background: #1a1f2a;--color-surface: #0c0f14;--color-surface-elevated: #151921;--color-surface-hover: #1c212b;--color-text: #f1f5f9;--color-text-secondary: #cbd5e1;--color-text-muted: #94a3b8;--color-border: #2d3748;--color-border-subtle: #1e2633;--radius: 12px;--radius-sm: 8px;--radius-lg: 16px;--shadow: 0 4px 20px rgba(0, 0, 0, .4);--shadow-md: 0 8px 30px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px var(--color-primary-glow);--font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", monospace}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-sans);background-color:var(--color-background);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background-image:radial-gradient(ellipse at 20% 0%,rgba(245,158,11,.03) 0%,transparent 50%),radial-gradient(ellipse at 80% 100%,rgba(245,158,11,.02) 0%,transparent 50%);pointer-events:none;z-index:-1}.container{width:100%;max-width:600px;margin:0 auto;padding:1.25rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.875rem 1.5rem;border:none;border-radius:var(--radius);font-family:var(--font-sans);font-size:.9375rem;font-weight:600;cursor:pointer;transition:all .2s 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100%)}.toast-info{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dark) 100%);color:#0c0f14}@keyframes toastSlideIn{0%{transform:translate(120%);opacity:0}to{transform:translate(0);opacity:1}}.nav{background-color:var(--color-surface);border-bottom:1px solid var(--color-border-subtle);padding:1rem 1.25rem;position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background-color:#151921e6}.nav-content{max-width:600px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.nav-brand{font-size:1.25rem;font-weight:700;color:var(--color-primary);text-decoration:none;letter-spacing:-.025em;transition:opacity .2s}.nav-brand:hover{opacity:.85}.nav-links{display:flex;align-items:center;gap:.25rem}.nav-link{color:var(--color-text-secondary);text-decoration:none;font-weight:500;font-size:.9375rem;padding:.5rem .75rem;border-radius:var(--radius-sm);transition:all .2s ease}.nav-link:hover{color:var(--color-text);background-color:var(--color-surface-hover)}.nav-link.active{color:var(--color-primary)}.nav-profile{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background-color:var(--color-surface-elevated);border:1px solid var(--color-border);color:var(--color-text-secondary);transition:all .2s ease}.nav-profile:hover{border-color:var(--color-primary);color:var(--color-primary);background-color:var(--color-primary-glow)}.nav-user{display:flex;align-items:center;gap:.5rem;margin-left:1rem;padding-left:1rem;border-left:1px solid var(--color-border)}.nav-logout{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:none;border:1px solid transparent;color:var(--color-text-secondary);cursor:pointer;transition:all .2s ease}.nav-logout:hover{border-color:var(--color-error);color:var(--color-error);background-color:#ef44441a}.page-header{margin-bottom:1.5rem}.page-title{font-size:1.5rem;font-weight:600;color:#fff}.page-subtitle{color:var(--color-text-secondary);font-size:.9375rem;margin-top:.25rem}.spinner{width:40px;height:40px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite;margin:2rem auto}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:3rem 1.5rem;color:var(--color-text-secondary)}.empty-state-icon{font-size:3rem;margin-bottom:1rem;opacity:.5}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem;position:relative}.auth-page:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:600px;height:400px;background:radial-gradient(ellipse,rgba(245,158,11,.08) 0%,transparent 70%);pointer-events:none}.auth-card{width:100%;max-width:400px;position:relative}.auth-title{text-align:center;margin-bottom:2rem;font-size:1.75rem;font-weight:700;letter-spacing:-.025em}.auth-link{text-align:center;margin-top:1.5rem;color:var(--color-text-secondary)}.auth-link a{color:var(--color-primary);text-decoration:none;font-weight:500;transition:opacity .2s}.auth-link a:hover{opacity:.85}.expense-item{display:flex;justify-content:space-between;align-items:flex-start;padding:1rem;border-bottom:1px solid var(--color-border-subtle);transition:background-color .2s ease}.expense-item:hover{background-color:var(--color-surface-hover)}.expense-item:last-child{border-bottom:none}.expense-info{flex:1;min-width:0}.expense-description{font-weight:500;margin-bottom:.375rem;color:var(--color-text)}.expense-meta{font-size:.8125rem;color:var(--color-text-secondary);display:flex;flex-wrap:wrap;gap:.5rem}.expense-participants{font-size:.8125rem;color:var(--color-text-muted, #64748b);margin-top:.25rem}.expense-amount{font-weight:600;font-size:1.125rem;color:var(--color-text);font-variant-numeric:tabular-nums}.category-badge{display:inline-flex;align-items:center;padding:.25rem .625rem;background-color:var(--color-surface-elevated);border:1px solid var(--color-border);border-radius:100px;font-size:.75rem;font-weight:500;color:var(--color-text-secondary)}.invite-code{font-family:var(--font-mono);font-size:1.75rem;font-weight:500;letter-spacing:.3rem;text-align:center;padding:1.25rem;background-color:var(--color-surface-elevated);border:1px dashed var(--color-border);border-radius:var(--radius);margin:1rem 0;color:var(--color-primary)}.profile-header{display:flex;align-items:center;gap:1.25rem;margin-bottom:2rem}.profile-avatar{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dark) 100%);display:flex;align-items:center;justify-content:center;font-size:1.75rem;font-weight:700;color:#0c0f14;flex-shrink:0}.profile-info h2{font-size:1.375rem;font-weight:600;margin-bottom:.25rem}.profile-info p{color:var(--color-text-secondary);font-size:.9375rem}.profile-section{margin-bottom:1.5rem}.profile-section-title{font-size:1rem;font-weight:700;letter-spacing:.025em;color:var(--color-text);margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid var(--color-border-subtle)}.profile-stat{display:flex;justify-content:space-between;align-items:center;padding:.75rem 0}.profile-stat-label{color:var(--color-text-secondary);font-size:.9375rem}.profile-stat-value{font-weight:500;color:var(--color-text)}.danger-zone{background-color:#ef44440d;border:1px solid rgba(239,68,68,.2);border-radius:var(--radius);padding:1.25rem;margin-top:1rem}.danger-zone-title{color:var(--color-error);font-weight:600;margin-bottom:.5rem;font-size:.9375rem}.danger-zone-text{color:var(--color-text-secondary);font-size:.875rem;margin-bottom:1rem}.modal-overlay{position:fixed;inset:0;background-color:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:1rem;z-index:1000;animation:fadeIn .2s ease}.modal{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);width:100%;max-width:400px;padding:1.5rem;animation:modalSlideUp .3s cubic-bezier(.4,0,.2,1)}.modal-title{font-size:1.25rem;font-weight:600;margin-bottom:.75rem}.modal-text{color:var(--color-text-secondary);margin-bottom:1.5rem;font-size:.9375rem}.modal-actions{display:flex;gap:.75rem}.modal-actions .btn{flex:1}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes modalSlideUp{0%{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.divider{height:1px;background-color:var(--color-border-subtle);margin:1.5rem 0}.section-label{font-size:1.25rem;font-weight:600;color:#fff;margin-bottom:1rem}.success-message{display:flex;align-items:center;gap:.5rem;color:var(--color-success);font-size:.875rem;font-weight:500;margin-top:.5rem}@media(min-width:768px){.container{padding:2rem}.nav-links{gap:.5rem}}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}::selection{background-color:var(--color-primary);color:#0c0f14}