:root{--primary: #3b82f6;--primary-dark: #2563eb;--success: #22c55e;--warning: #f59e0b;--danger: #ef4444;--gray: #6b7280;--gray-light: #e5e7eb;--bg: #f5f5f5;--card: #fff;--radius: 10px;--shadow: 0 1px 3px rgba(0,0,0,.08)}body{background:var(--bg);font-size:14px;line-height:1.5;padding:0 0 60px}input,select,textarea,button{font-size:14px}a{color:var(--primary);text-decoration:none}.top-bar{background:var(--primary);color:#fff;padding:10px 16px;display:flex;align-items:center;gap:10px;position:sticky;top:0;z-index:100}.top-bar h1{font-size:16px;font-weight:600;flex:1}.top-bar .back{background:none;border:none;color:#fff;font-size:20px;cursor:pointer;padding:0}.top-bar .logout{background:none;border:none;color:#fff;font-size:13px;cursor:pointer;opacity:.8}.bottom-nav{position:fixed;bottom:0;left:0;right:0;background:#fff;display:flex;border-top:1px solid var(--gray-light);z-index:100}.bottom-nav a{flex:1;text-align:center;padding:8px 0;font-size:11px;color:var(--gray);text-decoration:none}.bottom-nav a.active{color:var(--primary);font-weight:600}.bottom-nav a span{display:block;font-size:18px;margin-bottom:2px}.card{background:var(--card);border-radius:var(--radius);padding:14px 16px;margin:10px 12px;box-shadow:var(--shadow)}.card-title{font-size:15px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;justify-content:space-between}.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.stat-box{text-align:center;padding:12px 0}.stat-num{font-size:28px;font-weight:700;color:var(--primary)}.stat-label{font-size:12px;color:var(--gray);margin-top:2px}.form-group{margin-bottom:12px}.form-group label{display:block;font-size:13px;color:var(--gray);margin-bottom:4px}.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 12px;border:1px solid var(--gray-light);border-radius:8px;outline:none;transition:border-color .2s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary)}.form-group textarea{resize:vertical;min-height:60px}.btn{display:inline-block;padding:10px 24px;border:none;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;text-align:center}.btn-primary{background:var(--primary);color:#fff;width:100%}.btn-primary:active{background:var(--primary-dark)}.btn-success{background:var(--success);color:#fff}.btn-danger{background:var(--danger);color:#fff}.btn-sm{padding:6px 14px;font-size:12px}.btn-outline{background:transparent;border:1px solid var(--gray-light);color:var(--gray)}.btn-group{display:flex;gap:8px;margin-top:12px}.list-item{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--gray-light)}.list-item:last-child{border-bottom:none}.list-item-title{font-weight:500;font-size:14px}.list-item-sub{font-size:12px;color:var(--gray);margin-top:2px}.tag{display:inline-block;padding:2px 8px;border-radius:12px;font-size:11px;font-weight:500}.tag-active{background:#dcfce7;color:#166534}.tag-draft{background:#f3f4f6;color:#6b7280}.tag-ended{background:#fef3c7;color:#92400e}.tag-paid{background:#dcfce7;color:#166534}.tag-unpaid{background:#fef3c7;color:#92400e}.empty{padding:40px 0;text-align:center;color:var(--gray);font-size:14px}.page{padding:10px 0}.page-loading{text-align:center;padding:40px;color:#999}.page-footer{padding:16px 12px}.page-footer .btn{margin-bottom:8px}.overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0006;z-index:200;display:flex;align-items:center;justify-content:center;padding:20px}.modal{background:#fff;border-radius:12px;padding:20px;width:100%;max-width:380px;max-height:80vh;overflow-y:auto}.modal h3{margin-bottom:12px;font-size:16px}.modal-actions{display:flex;gap:8px;margin-top:16px}.modal-actions .btn{flex:1}.detail-header{background:var(--primary);color:#fff;padding:20px 16px 16px;margin:-10px -12px 0}.detail-header h2{font-size:18px;margin-bottom:4px}.detail-header p{font-size:13px;opacity:.9}.hidden{display:none}.search-bar{background:var(--card);margin:0 12px 10px;border-radius:var(--radius);padding:10px 12px;display:flex;gap:8px;align-items:center;box-shadow:var(--shadow)}.search-bar input{flex:1;border:none;outline:none;font-size:14px;background:transparent}.login-page{display:flex;flex-direction:column;min-height:100vh;padding:40px 20px;background:var(--primary)}.login-page .login-card{background:#fff;border-radius:16px;padding:30px 24px;margin-top:auto}.login-page h2{font-size:22px;margin-bottom:4px;color:#fff}.login-page .sub{color:#fffc;font-size:14px;margin-bottom:24px}.login-page .btn{margin-top:8px}