:root{--color-bg: #f0fdfa;--color-primary: #0f766e;--color-primary-dark: #115e59;--color-border-soft: #ccfbf1;--color-text-main: #0f172a;--color-text-muted: #64748b;--color-danger: #dc2626;--radius-card: 16px}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:radial-gradient(circle at top left,#e0f2fe,var(--color-bg));color:var(--color-text-main)}.app-root{min-height:100vh;display:flex;flex-direction:column}.app-header{padding:12px 16px;background:linear-gradient(90deg,#0f766e,#0891b2);color:#fff;box-shadow:0 4px 12px #0f766e59}.brand{font-weight:700;font-size:1rem}.app-main{flex:1;padding:16px;max-width:720px;margin:0 auto}.app-footer{padding:12px 16px;text-align:center;font-size:.8rem;color:var(--color-text-muted)}.offline-banner{background:#f97316;color:#fff;text-align:center;padding:6px 12px;font-size:.8rem}.page{display:flex;flex-direction:column;gap:16px}.page-centered{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 120px)}.card{background:#fff;border-radius:var(--radius-card);padding:16px 18px;border:1px solid var(--color-border-soft);box-shadow:0 10px 30px #0f172a14}.card-wide{max-width:480px;width:100%}.title{margin:0 0 4px;font-size:1.5rem;font-weight:700;color:var(--color-primary)}.subtitle{margin:0 0 16px;font-size:.9rem;color:var(--color-text-muted)}.form-section{display:flex;flex-direction:column;gap:8px}.form-heading{font-size:.95rem;font-weight:600;color:var(--color-text);margin:0 0 .5rem}.field-label{font-size:.85rem;font-weight:600;color:var(--color-primary)}.input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--color-border-soft);font-size:.95rem;outline:none;background:#fff;box-shadow:0 1px 3px #0f172a14}.input:focus{border-color:var(--color-primary);box-shadow:0 0 0 2px #2dd4bf66}.btn{border:none;border-radius:12px;padding:12px 16px;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .15s ease,transform .05s ease,box-shadow .15s ease}.btn-primary{background:var(--color-primary);color:#fff;box-shadow:0 8px 20px #0f766e80}.btn-primary:hover{background:var(--color-primary-dark)}.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 10px #0f766e80}.btn-outline{background:#fff;color:var(--color-primary);border:2px solid var(--color-primary)}.btn-outline:hover{background:#0f766e0d}.full-width{width:100%}.divider{height:20px}.section-header{display:flex;justify-content:space-between;align-items:center;padding:0 4px}.section-header h3{margin:0;font-size:1rem;font-weight:700;color:var(--color-primary)}.link-button{border:none;background:transparent;color:var(--color-primary);font-weight:600;cursor:pointer}.trip-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.trip-name{margin:0;font-size:1.2rem;font-weight:700;color:var(--color-primary)}.trip-code-row{display:flex;align-items:center;gap:8px;margin-top:6px;flex-wrap:wrap}.trip-code-label{font-size:.85rem;color:var(--color-text-muted)}.trip-code-value{font-size:1rem;letter-spacing:.05em;color:var(--color-primary)}.btn-copy{padding:4px 10px;font-size:.8rem;font-weight:600;border-radius:8px;border:1px solid var(--color-primary);background:#fff;color:var(--color-primary);cursor:pointer}.btn-copy:hover{background:var(--color-border-soft)}.summary{margin-top:8px}.summary-label{font-size:.8rem;color:var(--color-text-muted);margin-bottom:4px}.summary-positive{font-size:1.1rem;font-weight:700;color:#059669}.summary-negative{font-size:1.1rem;font-weight:700;color:var(--color-danger)}.summary-neutral{font-size:.9rem;color:var(--color-text-muted)}.list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.list-item{display:flex;align-items:center;padding:10px 8px;border-radius:12px;border:1px solid var(--color-border-soft)}.list-item.space-between{justify-content:space-between}.exp-emoji{font-size:1.4rem;margin-right:10px}.exp-main{flex:1}.exp-title{font-weight:600;color:var(--color-primary)}.exp-meta{font-size:.8rem;color:var(--color-text-muted);margin-top:2px}.exp-added-by{font-size:.75rem;color:var(--color-text-muted);margin-top:2px;opacity:.9}.list-item-with-actions{flex-wrap:wrap;gap:8px}.exp-actions{display:flex;align-items:center;gap:8px;margin-left:auto}.exp-action{font-size:.85rem;padding:4px 8px}.exp-action-remove{color:var(--color-danger, #c00)}.trip-name-edit{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.trip-name-edit .input{max-width:200px}.trip-edit-btn{margin-left:8px;font-size:.9rem;font-weight:400}.btn-sm{padding:4px 10px;font-size:.85rem}.member-edit-form{display:flex;flex-direction:column;gap:6px;width:100%}.member-edit-form .input{max-width:100%}.member-totals-list{list-style:none;padding:0;margin:6px 0 0}.member-total-item{font-size:.9rem;margin-bottom:4px;color:var(--color-text-muted)}.member-total-item .summary-positive,.member-total-item .summary-negative{font-weight:600}.font-bold{font-weight:700}.muted{font-size:.85rem;color:var(--color-text-muted)}.actions-row{display:flex;gap:8px;margin-top:4px}.section-title{margin:0 0 8px;font-size:1.1rem;font-weight:700;color:var(--color-primary)}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.chip{border-radius:999px;border:1px solid var(--color-border-soft);background:#fff;padding:6px 12px;font-size:.8rem;color:var(--color-primary);cursor:pointer}.chip-active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.hint{margin-top:4px;font-size:.75rem;color:var(--color-text-muted)}.from-to{font-size:.9rem}.from{font-weight:600;color:var(--color-primary)}.to{font-weight:600;color:#059669}.amount{font-size:1rem;font-weight:700;color:var(--color-primary);margin-top:4px}@media(max-width:640px){.app-main{padding-inline:12px}.card{padding-inline:14px}}