:root {
    --bg: #050a13;
    --bg-grid: rgba(40, 68, 101, .13);
    --topbar: #0b1428;
    --panel: #0d172c;
    --panel-soft: #0a1324;
    --field: #07101e;
    --line: #1d3152;
    --line-bright: #29486f;
    --text: #ffffff;
    --muted: #9db0c3;
    --green: #27f2ae;
    --green-dark: #00bc83;
    --cyan: #32d9ff;
    --amber: #ffc928;
    --red: #ff4f6f;
    --violet: #9b7dff;
    --mono: "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    --sans: "Segoe UI Variable", "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
    min-height: 100vh;
    margin: 0;
    color: var(--text);
    background-color: var(--bg);
    background-image:
        linear-gradient(var(--bg-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px),
        radial-gradient(circle at 86% 0%, rgba(54, 25, 98, .15), transparent 36%),
        radial-gradient(circle at 22% 0%, rgba(0, 105, 103, .10), transparent 32%);
    background-size: 118px 118px, 118px 118px, auto, auto;
    font-family: var(--sans);
    font-size: 14px;
}
button, input, select { font: inherit; }
a, button, input, select { outline-color: var(--cyan); }

.app-topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    min-height: 54px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: stretch;
    padding: 0 12px;
    border-bottom: 1px solid var(--line);
    background: rgba(11, 20, 40, .97);
    box-shadow: 0 3px 24px rgba(0, 0, 0, .26);
}
.brand-block { display: flex; align-items: center; gap: 11px; padding-right: 26px; color: inherit; text-decoration: none; }
.brand-led { width: 10px; height: 10px; border-radius: 2px; background: var(--green); box-shadow: 0 0 7px rgba(39, 242, 174, .95), 0 0 16px rgba(39, 242, 174, .35); }
.brand-name { color: #fff; font: 800 14px/1 var(--mono); letter-spacing: .16em; white-space: nowrap; }
.brand-name strong { color: var(--cyan); }
.main-navigation { display: flex; align-items: stretch; gap: 3px; }
.main-navigation a { min-width: 94px; display: flex; align-items: center; justify-content: center; position: relative; padding: 0 15px; color: #fff; text-decoration: none; text-transform: uppercase; font: 700 10px/1 var(--mono); letter-spacing: .08em; }
.main-navigation a::after { content: ""; position: absolute; left: 13px; right: 13px; bottom: 0; height: 2px; }
.main-navigation a:hover { color: var(--cyan); background: rgba(50, 217, 255, .035); }
.main-navigation a.active { color: var(--cyan); }
.main-navigation a.active::after { background: var(--cyan); box-shadow: 0 0 8px rgba(50, 217, 255, .45); }
.device-state { min-width: 260px; display: flex; align-items: center; justify-content: flex-end; gap: 10px; padding-left: 18px; }
.device-state > span:nth-child(2) { display: grid; line-height: 1.1; }
.device-state strong { font: 700 11px var(--mono); }
.device-state small { margin-top: 3px; color: var(--cyan); font: 700 8px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.logout-link { width: 30px; height: 30px; display: grid; place-items: center; border: 1px solid var(--line-bright); color: var(--red); text-decoration: none; font-size: 20px; line-height: 1; }
.logout-link:hover { border-color: var(--red); color: #fff; background: rgba(255, 79, 111, .10); }
.status-dot { width: 9px; height: 9px; display: inline-block; border-radius: 0; }
.status-checking { background: var(--amber); animation: pulse 1s infinite; }
.status-online { background: var(--green); box-shadow: 0 0 8px rgba(39, 242, 174, .7); }
.status-offline { background: var(--red); box-shadow: 0 0 8px rgba(255, 79, 111, .55); }
@keyframes pulse { 50% { opacity: .35; } }

.app-shell { width: 100%; padding: 18px 16px 42px; }
.page-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 14px; padding: 16px 18px; border: 1px solid var(--line); border-radius: 4px; background: rgba(13, 23, 44, .94); }
.page-heading h1 { margin: 0; color: #fff; font-size: 22px; letter-spacing: -.02em; }
.page-heading p:last-child { margin: 6px 0 0; color: var(--muted); font-size: 12px; }
.console-kicker { margin: 0 0 4px; color: var(--cyan); text-transform: uppercase; font: 800 8px var(--mono); letter-spacing: .12em; }
.console-panel { border: 1px solid var(--line); border-radius: 4px; background: rgba(13, 23, 44, .96); box-shadow: 0 7px 22px rgba(0, 0, 0, .18); }
.module-heading { min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 11px 14px; border-bottom: 1px solid var(--line); background: rgba(7, 16, 30, .72); }
.module-heading h2, .settings-card h2 { margin: 0; color: #fff; font-size: 15px; }

.action-button, .secondary-button { min-height: 36px; border-radius: 2px; letter-spacing: .08em; text-transform: uppercase; cursor: pointer; font: 800 9px var(--mono); }
.action-button { padding: 0 16px; border: 1px solid var(--green); background: rgba(39, 242, 174, .08); color: var(--green); }
.action-button span { width: 6px; height: 6px; display: inline-block; margin-right: 8px; background: var(--green); box-shadow: 0 0 6px var(--green); }
.action-button:hover, .action-button:focus { background: var(--green); color: #03150f; }
.action-button:disabled { opacity: .45; cursor: progress; }
.secondary-button { display: inline-grid; place-items: center; min-height: 32px; padding: 0 12px; border: 1px solid var(--line-bright); background: var(--field); color: var(--cyan); text-decoration: none; }
.secondary-button:hover { border-color: var(--cyan); color: #fff; background: rgba(50, 217, 255, .08); }

#alert-region:not(:empty) { margin-bottom: 12px; }
.app-alert { position: relative; padding: 10px 36px 10px 13px; border: 1px solid var(--line-bright); background: #101d34; color: #fff; font-size: 12px; }
.app-alert.success { border-left: 4px solid var(--green); }
.app-alert.error { border-left: 4px solid var(--red); }
.app-alert button { position: absolute; right: 9px; top: 6px; border: 0; background: none; color: #fff; font-size: 18px; }

.summary-grid { display: grid; grid-template-columns: repeat(4, minmax(170px, 1fr)); gap: 10px; margin-bottom: 12px; }
.summary-grid article { min-height: 90px; display: grid; align-content: center; gap: 4px; padding: 14px 16px; border: 1px solid var(--line); border-left: 3px solid var(--green); border-radius: 3px; background: rgba(13, 23, 44, .96); }
.summary-grid span { color: var(--cyan); font: 800 8px var(--mono); letter-spacing: .08em; }
.summary-grid strong { color: #fff; font: 750 18px var(--mono); }
.summary-grid small { color: var(--muted); font-size: 10px; }
.dashboard-grid { display: grid; grid-template-columns: minmax(620px, 1.6fr) minmax(280px, .6fr); gap: 12px; }
.preview-panel { min-width: 0; overflow: hidden; }
.tv-frame { margin: 14px; overflow: hidden; border: 1px solid var(--line-bright); background: #000; aspect-ratio: 16/9; }
.tv-frame iframe { width: 1280px; height: 720px; display: block; border: 0; transform-origin: 0 0; transform: scale(var(--preview-scale, .65)); }
.activity-panel { min-width: 0; }
.fact-list { margin: 0; padding: 8px 14px; }
.fact-list > div { min-height: 46px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); }
.fact-list dt { color: var(--muted); text-transform: uppercase; font: 800 8px var(--mono); letter-spacing: .08em; }
.fact-list dd { margin: 0; color: #fff; text-align: right; font: 700 11px var(--mono); }
.fact-list dd .status-dot { margin-right: 8px; }
.error-box, .resilience-note, .security-note { margin: 12px 14px; padding: 11px 12px; border: 1px solid var(--line); background: var(--field); }
.error-box { border-left: 3px solid var(--red); color: #ffbac6; font: 10px/1.5 var(--mono); }
.resilience-note, .security-note { display: grid; gap: 5px; border-left: 3px solid var(--green); }
.resilience-note strong, .security-note strong { color: var(--green); font: 800 9px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.resilience-note span, .security-note span { color: var(--muted); font-size: 11px; line-height: 1.5; }
.empty-state { min-height: 440px; display: grid; place-content: center; gap: 8px; padding: 24px; text-align: center; }
.empty-state strong { color: var(--cyan); }
.empty-state span { max-width: 480px; color: var(--muted); }

.table-panel { overflow: hidden; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { padding: 10px 12px; border-bottom: 1px solid var(--line); background: #081121; color: #8fa3b8; text-align: left; text-transform: uppercase; white-space: nowrap; font: 800 8px var(--mono); letter-spacing: .06em; }
.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--line); color: #dbe5ef; vertical-align: middle; font-size: 11px; }
.data-table tbody tr:hover td { background: rgba(19, 34, 61, .74); }
.data-table td strong { display: block; color: #fff; font-size: 12px; }
.data-table td small { max-width: 650px; display: block; margin-top: 3px; color: var(--muted); line-height: 1.4; }
.data-table td a { display: inline-block; margin-top: 5px; color: var(--cyan); font: 700 8px var(--mono); text-decoration: none; text-transform: uppercase; }
.article-position { width: 70px; }
.form-control, .form-select { border: 1px solid var(--line-bright); border-radius: 2px; background-color: var(--field); color: #fff; }
.form-control:focus, .form-select:focus { border-color: var(--cyan); background-color: var(--field); color: #fff; box-shadow: 0 0 0 2px rgba(50, 217, 255, .14); }
.form-select option { background: var(--field); color: #fff; }
.form-check-input { border-color: var(--line-bright); border-radius: 1px !important; background-color: var(--field); }
.form-check-input:checked { border-color: var(--green); background-color: var(--green-dark); }
.badge-ok, .badge-error, .badge-muted, .role-badge { display: inline-block; padding: 5px 7px; border: 1px solid; border-radius: 2px; font: 800 8px var(--mono); letter-spacing: .05em; }
.badge-ok { border-color: rgba(39, 242, 174, .5); background: rgba(39, 242, 174, .07); color: var(--green); }
.badge-error { border-color: rgba(255, 79, 111, .55); background: rgba(255, 79, 111, .07); color: var(--red); }
.badge-muted { border-color: var(--line-bright); background: var(--field); color: #8fa3b8; }
.role-admin { border-color: rgba(155, 125, 255, .5); color: var(--violet); background: rgba(155, 125, 255, .08); }
.role-editor { border-color: rgba(50, 217, 255, .5); color: var(--cyan); background: rgba(50, 217, 255, .08); }
.role-viewer { border-color: var(--line-bright); color: #b7c4d0; background: var(--field); }
.empty-cell { padding: 36px !important; color: var(--muted) !important; text-align: center; }

.settings-grid { display: grid; grid-template-columns: repeat(3, minmax(260px, 1fr)); gap: 12px; }
.settings-card { padding: 16px; }
.settings-card > header { margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.form-field { display: grid; gap: 6px; margin-bottom: 13px; }
.form-field > span { color: var(--cyan); text-transform: uppercase; font: 800 8px var(--mono); letter-spacing: .08em; }
.form-field small { color: var(--muted); font-size: 9px; }
.form-check { display: flex; align-items: center; gap: 8px; color: #dce6ef; font-size: 11px; }

.modal-backdrop { background-color: #01040a; }
.admin-modal { border: 1px solid var(--line-bright); border-radius: 3px; background: #0d172c; color: #fff; box-shadow: 0 28px 90px rgba(0,0,0,.72); }
.admin-modal .modal-header, .admin-modal .modal-footer { border-color: var(--line); }
.admin-modal .modal-title { color: #fff; font-size: 17px; }

@media (max-width: 1100px) {
    .main-navigation a { min-width: 72px; padding: 0 9px; font-size: 8px; }
    .device-state { min-width: 170px; }
    .device-state > span:nth-child(2) { display: none; }
    .dashboard-grid, .settings-grid { grid-template-columns: 1fr; }
    .summary-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
    .app-topbar { grid-template-columns: 1fr auto; }
    .main-navigation { grid-column: 1 / -1; overflow-x: auto; min-height: 48px; }
    .brand-block { min-height: 52px; }
    .device-state { min-width: 42px; }
    .page-heading { align-items: stretch; flex-direction: column; }
    .summary-grid { grid-template-columns: 1fr; }
}