:root{color-scheme:light;font-family:Inter,system-ui,sans-serif;background:#edf2f7;color:#1a202c}*{box-sizing:border-box}body{margin:0;min-height:100vh}.app-shell{max-width:1200px;margin:0 auto;padding:32px 20px 60px}header{background:linear-gradient(135deg,#2b6cb0,#1e5a8e);padding:28px 20px;margin:-32px -20px 24px;border-radius:0 0 20px 20px;box-shadow:0 12px 30px #2b6cb026}.header-top{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;align-items:center;text-align:center}header h1{margin:0;font-size:clamp(1.8rem,3vw,2.8rem);color:#fff;font-weight:800;letter-spacing:-.5px;text-shadow:0 2px 8px rgba(0,0,0,.1)}.api-status{padding:6px 12px;border-radius:999px;font-size:.95rem;font-weight:700;background:#e2e8f0;color:#1a202c}.api-status.online{background:#d1fae5;color:#047857}.api-status.offline{background:#fee2e2;color:#b91c1c}header p{margin:0;color:#4a5568}nav{display:flex;justify-content:center;gap:8px;margin-top:16px;flex-wrap:wrap}nav button{padding:8px 16px;border:1px solid #cbd5e1;background:#fff;border-radius:8px;cursor:pointer;font-weight:500;transition:all .2s}nav button.active{background:#2b6cb0;color:#fff;border-color:#2b6cb0}nav button:hover{background:#f7fafc}.card{background:#fff;border-radius:18px;padding:24px;box-shadow:0 18px 60px #0f172a14;margin-bottom:20px}.field-row,.item-row,.summary-row{display:grid;gap:12px;align-items:center}.field-row{margin-bottom:16px}.field-row label{font-weight:600}.field-row input,.field-row textarea,.item-row input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid #cbd5e1;font-size:1rem}.field-row textarea{resize:vertical;min-height:80px}.item-row{grid-template-columns:1.6fr .6fr .8fr auto;gap:12px;margin-bottom:12px}.small{min-width:100px}.remove-button,.primary-button,.whatsapp-button{border:none;cursor:pointer;border-radius:999px;padding:12px 18px;font-weight:700}.status-message{margin-top:14px;color:#2d3748;font-weight:600}.error-text{color:#e53e3e;font-size:.875rem;margin-top:4px;font-weight:500}.remove-button{background:#fed7d7;color:#b91c1c}.primary-button{background:#2b6cb0;color:#fff;width:fit-content}.whatsapp-button{display:inline-flex;align-items:center;justify-content:center;width:100%;background:#25d366;color:#fff;text-decoration:none;margin-top:16px}.preview-card pre{white-space:pre-wrap;word-break:break-word;background:#f7fafc;border-radius:14px;padding:18px;border:1px solid #e2e8f0;color:#2d3748;font-size:.95rem}.summary-row{display:flex;justify-content:space-between;align-items:center;margin-top:18px;font-size:1.1rem}.action-buttons{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.stat-card{background:#fff;border-radius:18px;padding:24px;box-shadow:0 18px 60px #0f172a14;text-align:center}.stat-card h3{margin:0 0 12px;color:#4a5568;font-size:1rem;font-weight:600}.stat-value{font-size:2rem;font-weight:700;color:#2b6cb0;margin:0}.customer-list,.service-list,.bill-list{display:grid;gap:16px}.customer-item,.service-item,.bill-item{border:1px solid #e2e8f0;border-radius:12px;padding:16px;background:#f8fafc}.customer-item h4,.service-item h4,.bill-item h4{margin:0 0 8px;color:#1a202c}.customer-item p,.service-item p,.bill-item p{margin:4px 0;color:#4a5568}.rate{font-weight:600;color:#2b6cb0}.bill-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.status{padding:4px 8px;border-radius:12px;font-size:.8rem;font-weight:600;text-transform:uppercase}.status.pending{background:#fef3c7;color:#d97706}.status.paid{background:#d1fae5;color:#059669}.helper-text{margin:8px 0 0;color:#4a5568;font-size:.92rem}.link-button{background:transparent;border:none;color:#2b6cb0;cursor:pointer;font-weight:700;text-decoration:underline;padding:0}.link-button:hover{color:#1d4e89}main{margin-top:32px}.app-shell{max-width:1200px;margin:0 auto;padding:32px 20px 120px}.bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:50;background:#fffffff5;border-top:1px solid rgba(148,163,184,.3);padding:10px 16px 18px;box-shadow:0 -10px 30px #0f172a14}.bottom-nav nav{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.bottom-nav button{padding:10px 12px;font-size:.85rem;border-radius:999px}@media(min-width:768px){.bottom-nav{max-width:1200px;margin:0 auto;left:0;right:0;width:calc(100% - 40px);border-radius:18px 18px 0 0}}