:root{
  --primary:#1a1a1a;--secondary:#f5f5f0;--accent:#cfac45;--text:#2a2a2a;
  --border:#e0e0d8;--hover:#ae913d;--red:#D94452;--green:#27ae60;--orange:#f39c12;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Work Sans',sans-serif;background:var(--secondary);color:var(--text);line-height:1.6}
h1,h2,h3,h4,h5{font-family:'Crimson Pro',serif;font-weight:300;letter-spacing:.02em}

/* login */
#login-overlay{position:fixed;inset:0;background:var(--secondary);display:flex;align-items:center;justify-content:center;z-index:9999}
#login-overlay.hidden{display:none}
.login-card{background:#fff;border:1px solid var(--border);padding:3rem 2.5rem 2.5rem;width:100%;max-width:400px;box-shadow:0 8px 40px rgba(0,0,0,.08)}
.login-logo{font-family:'Crimson Pro',serif;font-weight:300;font-size:2.75rem;color:var(--red);line-height:1;margin-bottom:.2rem}
.login-byline{font-size:.8rem;color:#aaa;margin-bottom:2.5rem}
.login-card h3{font-size:1.5rem;color:var(--primary);margin-bottom:1.75rem}
.login-field{margin-bottom:1.25rem}
.login-field label{display:block;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:#888;margin-bottom:.45rem}
.login-field input{width:100%;padding:.75rem 1rem;border:1px solid var(--border)!important;background:var(--secondary);font-size:.95rem;color:var(--primary);outline:none;box-sizing:border-box;height:auto!important;margin:0!important;box-shadow:none!important}
.login-field input:focus{border-color:var(--accent)!important;background:#fff}
.login-btn{width:100%;padding:.85rem;background:var(--accent);color:#fff;border:none;font-weight:600;font-size:.9rem;letter-spacing:.08em;text-transform:uppercase;cursor:pointer;margin-top:.5rem}
.login-btn:hover{background:var(--hover)}
.login-error{background:#fef1f0;border-left:3px solid var(--red);color:#721c24;padding:.6rem .9rem;font-size:.85rem;margin-bottom:1rem;display:none}
.login-error.show{display:block}
.login-footer{margin-top:2rem;padding-top:1.25rem;border-top:1px solid var(--border);font-size:.75rem;color:#bbb;text-align:center}
.user-pill{display:none;align-items:center;gap:.4rem;background:rgba(207,172,69,.12);border:1px solid rgba(207,172,69,.3);border-radius:20px;padding:.2rem .65rem .2rem .4rem;font-size:.75rem;color:var(--accent);font-weight:600;margin-top:.6rem;cursor:pointer;width:fit-content}
.user-pill i{font-size:.9rem}

/* layout */
.app-container{display:flex;min-height:100vh}
.sidebar{width:250px;background:#fff;display:flex;flex-direction:column;position:fixed;height:100vh;overflow-y:auto;border-right:1px solid var(--border)}
.sidebar-header{padding:2rem 1.5rem;border-bottom:1px solid var(--border)}
.sidebar-header h1{font-size:2rem;color:var(--red);margin-bottom:.5rem}
.sidebar-header p{font-size:.85rem;color:#999}
nav { background-color: white; }
.main-nav{flex:1;padding:1rem 0}
.main-nav-item{display:block;padding:1rem 1.5rem;color:var(--text);text-decoration:none;font-weight:500;letter-spacing:.05em;text-transform:uppercase;font-size:.85rem;cursor:pointer;border-left:3px solid transparent;transition:all .3s}
.main-nav-item:hover{background:var(--secondary);color:var(--hover)}
.main-nav-item.active{background:rgba(207,172,69,.1);color:var(--accent);border-left-color:var(--accent)}
.main-nav-item i{margin-right:.75rem;vertical-align:middle}
.back-button{color:var(--accent);text-decoration:none;display:flex;align-items:center;gap:.5rem;font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;font-weight:500}
.main-content{margin-left:250px;flex:1;padding:2rem;width:calc(100% - 250px)}
.content-header{padding:1rem 0 2rem;border-bottom:1px solid var(--border);margin-bottom:2rem;display:flex;justify-content:space-between;align-items:center}
.content-header h2{font-size:2rem;color:var(--primary)}
.content-subtitle{color:#666;font-size:.95rem;margin-top:.5rem}
.main-tab-content{display:none}
.main-tab-content.active{display:block;animation:fadeIn .4s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.notification-badge{display:inline-block;padding:2px 8px;border-radius:12px;font-size:11px;margin-left:8px;font-weight:bold;vertical-align:middle}
.red-badge{background:#ba4134;color:#fff}

/* shared widgets */
.client-table{background:#fff;border:1px solid var(--border)}
.client-table table{width:100%;border-collapse:collapse}
.client-table thead{background:var(--secondary);border-bottom:2px solid var(--border)}
.client-table th{padding:1rem;text-align:left;font-weight:600;font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:#666}
.client-table td{padding:1.5rem 1rem;border-bottom:1px solid var(--border)}
.client-table tbody tr{cursor:pointer}
.client-table tbody tr:hover{background:var(--secondary)}
.business-info{display:flex;align-items:center;gap:1rem}
.business-icon{width:40px;height:40px;background:var(--secondary);border-radius:4px;display:flex;align-items:center;justify-content:center;color:var(--accent)}
.business-name{font-weight:600;font-size:.95rem;color:var(--primary)}
.business-type{font-size:.85rem;color:#999}
.status-badge{padding:.35rem .75rem;border-radius:4px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;display:inline-flex;align-items:center;gap:.5rem}
.status-healthy{background:#d4edda;color:#155724}
.connection-badge{padding:.25rem .6rem;border-radius:3px;font-size:.7rem;font-weight:600;background:var(--accent);color:#fff}
.results-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border)}
.results-table th{background:var(--primary);color:#fff;padding:1rem;text-align:left;font-weight:500;font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}
.results-table td{padding:1rem;border-bottom:1px solid var(--border);font-size:.9rem}
.action-btn{padding:.5rem 1rem;margin:0 .25rem;border:none;cursor:pointer;font-size:.75rem;font-weight:500;text-transform:uppercase;letter-spacing:.05em;border-radius:3px;display:inline-flex;align-items:center;gap:.25rem}
.btn-view{background:#3498db;color:#fff}.btn-delete{background:#e74c3c;color:#fff}
.upload-area{border:2px dashed var(--border);padding:3rem;text-align:center;cursor:pointer;background:var(--secondary)}
.upload-area:hover,.upload-area.dragover{border-color:var(--accent);background:#fafaf5}
@keyframes ing-spin{to{transform:rotate(360deg)}}
.ing-spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:ing-spin .8s linear infinite;margin:0 auto 1rem}
@media(max-width:992px){.sidebar{width:200px}.main-content{margin-left:200px;width:calc(100% - 200px)}}
@media(max-width:768px){.app-container{flex-direction:column}.sidebar{width:100%;position:relative;height:auto}.main-content{margin-left:0;width:100%}}