:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:#f4f5f7;color:#17191c}
*{box-sizing:border-box}body{margin:0}.hidden{display:none!important}
main{max-width:1100px;margin:auto;padding:24px}
header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
h1{margin:.2rem 0 0;font-size:2rem}.brand{font-weight:900;letter-spacing:.16em;font-size:.9rem}
.notice{background:#fff;border:1px solid #ddd;border-radius:14px;padding:14px 16px;margin-bottom:22px}
.site{margin:28px 0}.site h2{font-size:1.35rem;margin-bottom:12px}
.panel{background:#fff;border:1px solid #ddd;border-radius:18px;padding:18px;margin:14px 0}
.panel h3{margin:0 0 14px}.door-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}
.door{border:1px solid #e1e1e1;border-radius:14px;padding:14px;background:#fafafa}
.door-name{font-weight:700;margin-bottom:10px}.door-meta{font-size:.8rem;color:#777;margin-bottom:12px}
button{border:0;border-radius:10px;padding:11px 16px;font-weight:700;cursor:pointer;background:#c91f28;color:white}
button:hover{filter:brightness(.95)}button:disabled{opacity:.5;cursor:not-allowed}
.secondary{background:#e8e8ea;color:#222}
.center-card{width:min(92vw,380px);margin:14vh auto;background:#fff;padding:28px;border-radius:18px;border:1px solid #ddd}
input{width:100%;padding:12px;border:1px solid #ccc;border-radius:10px;margin:14px 0;font-size:1rem}
.center-card button{width:100%}.error{color:#a00;margin-top:10px;min-height:1.2em}
.modal{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.45);display:grid;place-items:center;padding:20px}
.modal-card{background:#fff;border-radius:18px;padding:24px;width:min(92vw,430px)}
.actions{display:flex;gap:10px;justify-content:flex-end;margin-top:22px}
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:#17191c;color:#fff;padding:12px 16px;border-radius:12px;max-width:90vw}
@media(max-width:600px){main{padding:16px}header{align-items:flex-start}.door-grid{grid-template-columns:1fr}}

.header-actions{display:flex;gap:10px}
.settings-card{width:min(94vw,720px);max-height:86vh;overflow:auto}
.settings-site{margin:18px 0 8px;font-weight:800}
.settings-panel{font-size:.9rem;color:#666;margin:10px 0 5px}
.name-row{display:grid;grid-template-columns:1fr 2fr auto;gap:10px;align-items:center;margin:8px 0}
.name-row input{margin:0}
.door-active-label{display:flex;align-items:center;gap:6px;font-weight:700;white-space:nowrap}
.door-active-label input{width:auto;margin:0}
@media(max-width:600px){.name-row{grid-template-columns:1fr}.door-active-label{padding:2px 0 8px}.header-actions{flex-direction:column}}

.admin-settings-card{width:min(95vw,800px)}
.admin-section{border-top:1px solid #e2e2e2;padding-top:18px;margin-top:18px}
.admin-section:first-of-type{border-top:0;margin-top:0}
.admin-section h3{margin:0 0 6px}
.field-label{display:block;font-weight:700;margin:10px 0}
.field-label input{display:block;width:100%;font-weight:400}
.panel-credential-card{border:1px solid #ddd;border-radius:14px;padding:14px;margin:12px 0;background:#fafafa}
.panel-credential-title{font-weight:800}
.panel-credential-meta{font-size:.82rem;color:#666;margin:3px 0 10px}
.panel-credential-grid{display:grid;grid-template-columns:1fr 1fr auto;gap:10px;align-items:end}
.panel-credential-grid label{font-size:.85rem;font-weight:700}
.panel-credential-grid input{margin:5px 0 0}
.password-state{font-size:.8rem;color:#666;margin-top:5px}
@media(max-width:700px){.panel-credential-grid{grid-template-columns:1fr}}

.user-form-grid{display:grid;grid-template-columns:1fr 1fr 180px;gap:10px;align-items:end}
.user-form-grid label{font-weight:700;font-size:.9rem}.user-form-grid input,.user-form-grid select{display:block;width:100%;margin:5px 0 0;padding:10px;border:1px solid #ccc;border-radius:10px;background:#fff}
.new-user-card,.managed-user-card{border:1px solid #ddd;border-radius:14px;padding:14px;margin:12px 0;background:#fafafa}
.new-user-card h4,.managed-user-card h4{margin:0 0 10px}
.user-card-head{display:flex;justify-content:space-between;gap:12px;align-items:center}
.user-actions{display:flex;gap:8px;flex-wrap:wrap}.danger{background:#8f1720}
.permission-picker{margin:12px 0}.permission-site{font-weight:800;margin-top:12px}.permission-panel{font-weight:700;font-size:.9rem;margin:8px 0 4px}
.permission-doors{display:flex;gap:12px;flex-wrap:wrap}.permission-doors label{display:flex;align-items:center;gap:6px;font-size:.9rem}.permission-doors input{width:auto;margin:0}
.user-state-row{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:10px 0}.user-state-row label{font-weight:700}
.user-state-row select,.user-state-row input[type=password]{padding:8px;border:1px solid #ccc;border-radius:9px}
.current-user{font-size:.9rem;color:#666;margin-top:4px}
@media(max-width:700px){.user-form-grid{grid-template-columns:1fr}.user-card-head{align-items:flex-start;flex-direction:column}}


/* v7 responsive desktop/mobile experience */
body{background:#f3f4f6;min-height:100vh}
#appView{padding-bottom:36px}
.site-heading{display:flex;align-items:baseline;justify-content:space-between;gap:12px}.site-heading h2{margin:0}.site-heading span{font-size:.82rem;color:#777}
.panel-heading{display:flex;align-items:center;justify-content:space-between}.panel-heading h3{margin:0 0 14px}
.door{display:flex;align-items:center;justify-content:space-between;gap:14px;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.03)}
.door-info{display:flex;align-items:center;gap:12px;min-width:0}.door-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:#f0f1f3;font-size:1.2rem;flex:0 0 auto}.door-name{white-space:normal}.unlock-btn{min-width:96px;min-height:44px}
.mobile-topbar,.mobile-bottom-nav,.mobile-location-nav{display:none}
.update-info{display:grid;grid-template-columns:1fr 1fr;gap:12px}.update-info>div{padding:12px;border:1px solid #ddd;border-radius:12px;background:#fafafa}.update-label{display:block;color:#666;font-size:.78rem;margin-bottom:3px}

@media (min-width:721px){
  main{max-width:1180px;padding:28px}
  .door-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .panel{padding:20px}
}

@media (max-width:720px){
  body{background:#f5f6f8;padding-bottom:82px}
  main{padding:12px 12px 24px;max-width:none}
  main>header{display:none}
  .mobile-topbar{position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid #e5e5e5;padding:10px 14px;display:flex;align-items:center;justify-content:space-between;min-height:58px}
  .mobile-brand{font-size:.68rem;font-weight:900;letter-spacing:.16em}.mobile-user{font-size:.78rem;color:#666;max-width:42vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .notice{font-size:.86rem;padding:10px 12px;margin:0 0 10px;border-radius:12px}
  .mobile-location-nav{display:flex;gap:8px;overflow-x:auto;padding:2px 1px 12px;scrollbar-width:none;position:sticky;top:58px;z-index:30;background:#f5f6f8}.mobile-location-nav::-webkit-scrollbar{display:none}
  .location-chip{flex:0 0 auto;background:#fff;color:#222;border:1px solid #d8dadd;border-radius:999px;padding:9px 13px;font-size:.85rem;box-shadow:none}.location-chip.active{background:#17191c;color:#fff;border-color:#17191c}
  .site{margin:6px 0 18px}.site.mobile-hidden{display:none}.site-heading{padding:5px 3px 8px}.site-heading h2{font-size:1.3rem}.site-heading span{display:none}
  .panel{border:0;padding:0;background:transparent;margin:8px 0 18px}.panel-heading h3{font-size:.9rem;color:#666;margin:8px 3px}
  .door-grid{display:grid;grid-template-columns:1fr;gap:9px}
  .door{border:1px solid #e0e2e5;border-radius:15px;padding:12px;min-height:76px;box-shadow:0 1px 3px rgba(0,0,0,.04)}
  .door-icon{width:42px;height:42px}.door-name{font-size:1rem;margin-bottom:3px}.door-meta{margin:0;font-size:.75rem}.unlock-btn{min-width:100px;min-height:50px;border-radius:12px;font-size:.95rem}
  .mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:60;background:rgba(255,255,255,.97);border-top:1px solid #ddd;display:grid;grid-template-columns:repeat(4,1fr);padding:7px 8px calc(7px + env(safe-area-inset-bottom));box-shadow:0 -2px 12px rgba(0,0,0,.06)}
  .mobile-nav-btn{background:transparent;color:#444;border-radius:10px;padding:5px;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:.72rem;font-weight:700}.mobile-nav-btn:hover{filter:none;background:#f1f2f4}.mobile-nav-icon{font-size:1.15rem;line-height:1.1}
  .modal{padding:0;align-items:end}.modal-card{width:100%;max-width:none;border-radius:20px 20px 0 0;padding:20px 16px calc(18px + env(safe-area-inset-bottom));max-height:88vh;overflow:auto}.settings-card,.admin-settings-card{width:100%;max-height:100vh;height:100vh;border-radius:0;padding-top:18px}
  .actions{position:sticky;bottom:0;background:#fff;padding-top:12px}.actions button{min-height:48px}
  .admin-section{background:#fff;border:1px solid #e1e3e6;border-radius:14px;padding:14px;margin:12px 0}.admin-section:first-of-type{border-top:1px solid #e1e3e6;margin-top:12px}
  .user-form-grid,.panel-credential-grid,.update-info{grid-template-columns:1fr}.permission-doors{display:grid;grid-template-columns:1fr 1fr}.permission-doors label{min-height:40px;padding:8px;border-radius:9px;background:#f5f6f7}
  input,select{font-size:16px!important}
  .toast{bottom:92px;width:calc(100% - 30px);text-align:center}
  .center-card{margin:8vh auto;padding:24px 20px;border-radius:20px}
}


/* v8 location and panel administration */
.location-create-row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;margin:12px 0}
.location-create-row input{margin:0}
.new-panel-card,.location-admin-card{border:1px solid #dfe1e4;border-radius:14px;padding:14px;margin:12px 0;background:#fafafa}
.new-panel-card h4{margin:0 0 10px}.location-admin-header{display:grid;grid-template-columns:minmax(180px,1fr) auto auto;gap:8px;align-items:center;margin-bottom:10px}.location-admin-header input{margin:0;font-weight:800}
.panel-config-card{background:#fff;border:1px solid #ddd;border-radius:12px;padding:12px;margin:10px 0}.panel-config-title{font-weight:800;margin-bottom:8px}
.panel-config-grid{display:grid;grid-template-columns:1.1fr 1.1fr 1fr 1fr;gap:9px}.panel-config-grid label{font-size:.82rem;font-weight:700}.panel-config-grid input,.panel-config-grid select{display:block;width:100%;margin:5px 0 0;padding:10px;border:1px solid #ccc;border-radius:9px;background:#fff}
.inline-check{display:flex;align-items:center;gap:7px;margin:10px 0;font-size:.88rem;font-weight:700}.inline-check input{width:auto;margin:0}.panel-door-summary{font-size:.78rem;color:#666;margin:8px 0;line-height:1.45}.panel-config-actions{display:flex;gap:8px;flex-wrap:wrap}.empty-note{color:#777;font-size:.88rem;padding:8px 2px}
@media(max-width:720px){.location-create-row,.location-admin-header,.panel-config-grid{grid-template-columns:1fr}.location-admin-header button,.panel-config-actions button,.new-panel-card>button{min-height:46px}.panel-config-card{padding:12px}.panel-door-summary{font-size:.75rem}}


/* v10 administrator activity log */
.activity-header{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.activity-header h3{margin:0 0 6px}.activity-header p{margin:0}
.activity-filters{display:grid;grid-template-columns:180px 1fr;gap:10px;margin:12px 0}.activity-filters select,.activity-filters input{margin:0;padding:10px;border:1px solid #ccc;border-radius:10px;background:#fff}
.activity-log{max-height:520px;overflow:auto;border:1px solid #ddd;border-radius:12px;background:#fff}.activity-entry{padding:13px 14px;border-bottom:1px solid #eee;border-left:4px solid transparent}.activity-entry:last-child{border-bottom:0}.activity-entry.activity-success{border-left-color:#198754}.activity-entry.activity-failed{border-left-color:#b42318}.activity-entry.activity-denied{border-left-color:#b54708}.activity-topline{display:flex;align-items:center;justify-content:space-between;gap:12px}.activity-action{font-weight:800;font-size:.94rem}.activity-summary{font-weight:650;font-size:.93rem;line-height:1.4;margin-top:4px;color:#202020}.activity-details{font-size:.8rem;line-height:1.45;color:#666;margin-top:5px}.activity-stamp{font-size:.78rem;color:#777;white-space:nowrap}
@media(max-width:720px){.activity-header{align-items:stretch;flex-direction:column}.activity-filters{grid-template-columns:1fr}.activity-topline{align-items:flex-start;flex-direction:column;gap:2px}.activity-stamp{white-space:normal}.activity-log{max-height:none}.activity-entry{padding:12px}}

/* Sterling branding and version display - v10 */
.brand-logo{display:block;object-fit:contain}
.login-branding{text-align:center;margin-bottom:18px}.login-logo{width:min(260px,78vw);height:auto;margin:0 auto 8px}.access-control-title{font-size:1.75rem;font-weight:850;letter-spacing:.01em}.authorized-copy{text-align:center;color:#555;margin:0 0 18px}
.version-badge{display:inline-flex;align-items:center;justify-content:center;margin-top:8px;padding:3px 8px;border-radius:999px;background:#f0f1f3;color:#5f6368;font-size:.72rem;font-weight:700;letter-spacing:.03em}.version-badge.compact{margin:0}
.desktop-branding{display:flex;align-items:center;gap:18px}.desktop-logo{width:148px;height:auto}.desktop-branding h1{margin:0}.header-meta{display:flex;align-items:center;gap:10px;margin-top:5px}.header-meta .current-user{margin:0}
.mobile-branding{display:flex;align-items:center;gap:9px;min-width:0}.mobile-logo{width:82px;height:auto}.mobile-branding strong{font-size:.92rem;line-height:1}.mobile-version{font-size:.66rem;color:#777;margin-top:3px}.mobile-user{text-align:right}
@media(max-width:600px){.login-logo{width:min(230px,74vw)}.access-control-title{font-size:1.55rem}}

.activity-modal-card{width:min(95vw,900px)}
@media(max-width:720px){.activity-modal-card{width:100%;max-height:100vh;height:100vh;border-radius:0;padding-top:18px}}


/* v11 GPS distance auditing and alert administration */
.gps-settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:12px 0}.gps-settings-grid label{font-size:.84rem;font-weight:700}.gps-settings-grid input,.gps-settings-grid select{display:block;width:100%;margin:5px 0 0;padding:10px;border:1px solid #ccc;border-radius:9px;background:#fff}.settings-help{font-size:.82rem;color:#666;line-height:1.45}.smtp-details{margin:14px 0;padding:12px;border:1px solid #ddd;border-radius:12px;background:#fafafa}.smtp-details summary{cursor:pointer;font-weight:800}.gps-locations-heading{margin:22px 0 4px}.gps-location-card{border:1px solid #dfe1e4;border-radius:12px;padding:12px;margin:10px 0;background:#fafafa}.gps-location-title{font-weight:800;margin-bottom:8px}.gps-location-grid{display:grid;grid-template-columns:1fr 2fr;gap:9px}.gps-location-grid label{font-size:.82rem;font-weight:700}.gps-location-grid input{display:block;width:100%;margin:5px 0 0;padding:10px;border:1px solid #ccc;border-radius:9px;background:#fff}.gps-location-meta{font-size:.8rem;color:#666;margin:8px 0;line-height:1.45}.gps-location-actions{display:flex;gap:8px;flex-wrap:wrap}.gps-badge{display:inline-flex;align-items:center;padding:2px 7px;border-radius:999px;font-size:.75rem;font-weight:800;margin-left:5px}.gps-normal{background:#e8f5ec;color:#176b36}.gps-warning{background:#fff1cc;color:#8a5a00}.gps-alert{background:#fde8e7;color:#a32017}.gps-maximum{background:#f2dede;color:#7f1111}.gps-unknown{background:#eee;color:#666}
@media(max-width:720px){.gps-settings-grid,.gps-location-grid{grid-template-columns:1fr}.gps-location-actions button{min-height:46px}}

/* v12.7 admin settings tabs */
.admin-tabs{display:flex;gap:8px;overflow-x:auto;margin:12px 0 16px;padding:4px;background:#f1f2f4;border-radius:12px;scrollbar-width:none}.admin-tabs::-webkit-scrollbar{display:none}.admin-tab{flex:1 0 auto;background:transparent;color:#444;border-radius:9px;padding:10px 14px;font-weight:800;box-shadow:none;white-space:nowrap}.admin-tab:hover{filter:none;background:#fff}.admin-tab.active{background:#17191c;color:#fff}.admin-tab-panel.hidden{display:none!important}.admin-tab-panel>.admin-section:first-child{margin-top:0}
@media(max-width:720px){.admin-tabs{position:sticky;top:0;z-index:5;margin:0 -4px 14px;padding:5px;background:#f1f2f4}.admin-tab{flex:0 0 auto;min-height:44px;padding:9px 12px;font-size:.84rem}}


.version-history{display:grid;gap:12px;margin-top:14px}
.version-history-card{border:1px solid #ddd;border-radius:14px;padding:14px 16px;background:#fff}
.version-history-heading{display:flex;align-items:center;gap:10px;font-size:1.08rem;margin-bottom:8px}
.version-current{font-size:.78rem;background:#111;color:#fff;border-radius:999px;padding:3px 9px}
.version-history-card ul{margin:0;padding-left:20px;color:#444}
.version-history-card li+li{margin-top:5px}

/* v13.3 keep popup action buttons visible while scrolling */
.settings-card > .actions{
  position:sticky;
  bottom:-1px;
  z-index:12;
  background:#fff;
  padding:12px 0 2px;
  margin-top:18px;
  border-top:1px solid #eceef0;
}

/* v14.7 phone and tablet door-control experience */
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{-webkit-font-smoothing:antialiased;overscroll-behavior-y:none}
button,.location-chip{-webkit-tap-highlight-color:transparent;touch-action:manipulation}
.door-info>div:last-child{min-width:0}
.unlock-confirmation-target{font-size:1.02rem;font-weight:700;line-height:1.45}

@media(max-width:720px){
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .mobile-topbar{padding:calc(9px + env(safe-area-inset-top)) 12px 9px;min-height:calc(56px + env(safe-area-inset-top))}
  .mobile-logo{width:72px}.mobile-branding{gap:8px}.mobile-branding strong{font-size:.88rem}.mobile-user{max-width:38vw;font-size:.72rem}
  main{padding:10px 10px 20px}
  .notice{line-height:1.35;margin-bottom:8px}
  .mobile-location-nav{top:calc(56px + env(safe-area-inset-top));margin:0 -10px;padding:4px 10px 10px;scroll-padding-inline:10px}
  .location-chip{min-height:44px;padding:10px 15px;font-size:.9rem}
  .site-heading{padding:5px 2px 6px}.site-heading h2{font-size:1.22rem}
  .panel{margin:5px 0 16px}.panel-heading h3{margin:7px 2px;font-size:.86rem}
  .door-grid{gap:8px}
  .door{min-height:82px;padding:12px;gap:10px}
  .door-info{gap:10px;min-width:0;flex:1}.door-icon{width:44px;height:44px;border-radius:12px}.door-name{overflow-wrap:anywhere;line-height:1.25}.door-meta{margin-top:4px}
  .unlock-btn{min-width:104px;min-height:54px;padding:12px 17px;font-size:1rem;flex:0 0 auto}
  .mobile-bottom-nav{grid-template-columns:repeat(2,minmax(0,1fr));padding:6px 10px calc(6px + env(safe-area-inset-bottom))}
  .mobile-nav-btn{min-height:50px;font-size:.74rem}.mobile-nav-icon{font-size:1.25rem}
  .modal{padding:0;align-items:end;overscroll-behavior:contain}
  .modal-card{padding:22px 16px calc(16px + env(safe-area-inset-bottom));max-height:min(88dvh,700px)}
  .modal-card h2{font-size:1.42rem;margin:0 0 10px}.unlock-confirmation-target{margin:0 0 8px}
  #modal .actions{display:grid;grid-template-columns:1fr 1.25fr;gap:10px;margin-top:18px;padding-top:10px;z-index:1}
  #modal .actions button{width:100%;min-height:54px;font-size:1rem}
  .toast{bottom:calc(78px + env(safe-area-inset-bottom));width:calc(100% - 24px);padding:14px 16px;line-height:1.35}
  .center-card{width:calc(100% - 24px);margin:max(24px,8dvh) auto;padding:24px 18px}.center-card input,.center-card button{min-height:50px}
}

@media(max-width:420px){
  .door{display:grid;grid-template-columns:1fr;align-items:stretch;padding:13px}
  .unlock-btn{width:100%;min-height:56px}
  .door-info{width:100%}
  #modal .actions{grid-template-columns:1fr}
  #modal #confirmBtn{grid-row:1}#modal #cancelBtn{grid-row:2}
}

@media(orientation:landscape) and (max-height:520px) and (max-width:920px){
  .mobile-topbar{position:relative}.mobile-location-nav{top:0}
  .modal-card{max-height:96dvh}
}