:root {
    --bg: #f4f7fb;
    --panel: #ffffff;
    --text: #152237;
    --muted: #68758a;
    --border: #dfe6ef;
    --primary: #175cd3;
    --primary-dark: #124baa;
    --success: #087a54;
    --success-soft: #e7f7ef;
    --danger: #c13232;
    --danger-soft: #fff0f0;
    --warning: #a15c00;
    --warning-soft: #fff7e4;
    --neutral-soft: #eef2f7;
    --shadow: 0 18px 44px rgba(31, 52, 82, .1);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background: var(--bg);
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: var(--bg); }
h1, p { margin: 0; }
button, input, select { font: inherit; }

.login-page {
    display: grid;
    place-items: center;
    padding: 24px;
    background: radial-gradient(circle at top left, #d9e9ff, transparent 38%), #f6f8fc;
}
.login-shell { width: min(100%, 430px); }
.login-card {
    padding: 38px;
    border: 1px solid rgba(223, 230, 239, .8);
    border-radius: 20px;
    background: rgba(255, 255, 255, .96);
    box-shadow: var(--shadow);
}
.company-logo-slot {
    display: grid;
    width: 122px;
    height: 62px;
    margin-bottom: 18px;
    place-items: center;
    border: 1px dashed #b8c5d6;
    border-radius: 14px;
    color: var(--muted);
    background: #f8fafc;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}
.company-logo-slot img {
    display: block;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}
.company-logo-slot-small {
    flex: 0 0 auto;
    width: 104px;
    height: 52px;
    margin-bottom: 0;
}
.topbar-brand {
    display: flex;
    align-items: center;
    gap: 16px;
}
.eyebrow {
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}
.login-card h1 { margin-top: 5px; font-size: 28px; letter-spacing: -.04em; }
.login-copy { margin-top: 10px; color: var(--muted); line-height: 1.5; }
.login-form { display: grid; gap: 16px; margin-top: 26px; }
.login-form label { display: grid; gap: 7px; color: #344054; font-size: 14px; font-weight: 700; }

input, select {
    min-height: 44px;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0 13px;
    color: var(--text);
    background: #fff;
    outline: none;
    transition: border-color .18s, box-shadow .18s;
}
input:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(23, 92, 211, .14); }

.button {
    min-height: 42px;
    border: 1px solid transparent;
    border-radius: 9px;
    padding: 0 14px;
    cursor: pointer;
    font-weight: 750;
    transition: background .18s, border-color .18s;
}
.button:disabled { cursor: wait; opacity: .65; }
.button-primary { color: #fff; background: var(--primary); }
.button-primary:hover { background: var(--primary-dark); }
.button-secondary { border-color: var(--border); color: #344054; background: #fff; }
.button-secondary:hover { border-color: #b8c5d6; background: #f8fafc; }

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px clamp(18px, 4vw, 52px);
    border-bottom: 1px solid var(--border);
    background: #fff;
}
.topbar h1 { margin-top: 3px; font-size: 23px; letter-spacing: -.04em; }
.topbar-user { display: flex; align-items: center; gap: 16px; text-align: right; }
.topbar-user small { display: block; margin-top: 2px; color: var(--muted); }

.dashboard { width: min(100% - 32px, 1540px); margin: 25px auto 42px; }
.summary-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.summary-card {
    display: grid;
    gap: 7px;
    padding: 18px 20px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--panel);
}
.summary-card span { color: var(--muted); font-size: 13px; font-weight: 700; }
.summary-card strong { font-size: 28px; letter-spacing: -.05em; }
.summary-online strong, .summary-engine strong { color: var(--success); }
.summary-offline strong { color: var(--danger); }
.summary-unknown strong { color: #667085; }

.panel { margin-top: 16px; border: 1px solid var(--border); border-radius: 16px; background: var(--panel); box-shadow: 0 8px 28px rgba(31, 52, 82, .06); overflow: hidden; }
.panel-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 20px; border-bottom: 1px solid var(--border); }
.export-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.live-indicator { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 750; }
.status-dot { width: 9px; height: 9px; border-radius: 50%; background: #98a2b3; }
.status-dot-online { background: #12b76a; box-shadow: 0 0 0 4px rgba(18, 183, 106, .13); }
.status-dot-offline { background: #f04438; box-shadow: 0 0 0 4px rgba(240, 68, 56, .12); }
.status-dot-connecting { background: #f79009; box-shadow: 0 0 0 4px rgba(247, 144, 9, .13); }
.subtle, .result-count { margin-top: 5px; color: var(--muted); font-size: 13px; }

.filters { display: grid; grid-template-columns: minmax(260px, 1fr) 190px 190px; gap: 10px; padding: 16px 20px; }
.filters input, .filters select { width: 100%; }
.table-wrap { overflow-x: auto; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; white-space: nowrap; }
th, td { padding: 13px 14px; border-bottom: 1px solid var(--border); text-align: left; font-size: 13px; }
th { color: #536176; background: #f8fafc; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }
tbody tr:hover { background: #f9fbfe; }
tbody tr:last-child td { border-bottom: 0; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.badge { display: inline-flex; align-items: center; border-radius: 999px; padding: 4px 8px; font-size: 12px; font-weight: 750; }
.badge-status-online, .badge-engine-on { color: var(--success); background: var(--success-soft); }
.badge-status-offline, .badge-engine-off { color: var(--danger); background: var(--danger-soft); }
.badge-status-unknown, .badge-engine-unknown { color: #667085; background: var(--neutral-soft); }
.empty-state { padding: 30px; color: var(--muted); text-align: center; }
.result-count { margin: 0; padding: 13px 20px; }
.alert { margin: 16px 20px 0; border: 1px solid #f7b5b5; border-radius: 10px; padding: 11px 13px; color: #9d2424; background: var(--danger-soft); font-size: 14px; line-height: 1.4; }
.login-card .alert { margin: 18px 0 0; }
.alert-success { border-color: #a6dfc4; color: var(--success); background: var(--success-soft); }
.hidden { display: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 900px) {
    .summary-grid { grid-template-columns: repeat(3, 1fr); }
    .filters { grid-template-columns: 1fr 1fr; }
    .search-control { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
    .topbar { align-items: flex-start; }
    .topbar-brand { align-items: flex-start; gap: 10px; }
    .company-logo-slot-small { width: 82px; height: 46px; font-size: 11px; }
    .topbar-user { display: grid; gap: 8px; justify-items: end; }
    .topbar-user small { display: none; }
    .dashboard { width: min(100% - 20px, 1540px); margin-top: 12px; }
    .summary-grid { grid-template-columns: repeat(2, 1fr); }
    .summary-grid { gap: 9px; }
    .summary-card { padding: 13px 14px; }
    .summary-card strong { font-size: 24px; }
    .panel-header { display: grid; padding: 15px; }
    .export-actions { display: grid; grid-template-columns: repeat(3, 1fr); }
    .export-actions .button { padding: 0 9px; font-size: 12px; }
    .filters { grid-template-columns: 1fr; padding: 12px 15px; }
    .search-control { grid-column: auto; }
    table, thead, tbody, tr, th, td { display: block; }
    thead { display: none; }
    tbody { padding: 8px; }
    tbody tr { margin-bottom: 9px; border: 1px solid var(--border); border-radius: 11px; padding: 7px; }
    td { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 8px; padding: 7px; border: 0; white-space: normal; word-break: break-word; }
    td::before { content: attr(data-label); color: var(--muted); font-size: 11px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
    .empty-state { display: block; }
    .empty-state::before { display: none; }
}