:root {
    color-scheme: dark;
    --bg: #07101d;
    --panel: #101a2b;
    --panel-2: #142238;
    --line: #283a57;
    --text: #eef4ff;
    --muted: #9fb0ca;
    --accent: #72a8ff;
    --accent-2: #8fc3ff;
    --success: #68d99c;
    --warning: #f0b45c;
    --danger: #ff7f89;
    --shadow: 0 22px 70px rgba(0, 0, 0, .38);
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at 10% 0%, rgba(70, 120, 200, .22), transparent 34%),
        linear-gradient(145deg, #060c17, #0b1728 55%, #0d1d31);
    color: var(--text);
    font: 16px/1.45 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: inherit; }
.container {
    width: min(860px, calc(100% - 28px));
    margin: 34px auto 60px;
}
.container.wide { width: min(1220px, calc(100% - 28px)); }

.card,
.service-card,
.user-card {
    background: rgba(16, 26, 43, .96);
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
}
.card { padding: 22px; margin-bottom: 20px; }
.service-card { padding: 22px; margin-bottom: 20px; }
.user-card {
    padding: 19px;
    box-shadow: none;
    background: rgba(11, 20, 35, .8);
}

h1, h2, h3 { margin-top: 0; }
h1 { margin-bottom: 6px; font-size: clamp(27px, 4.6vw, 40px); }
h2 { margin-bottom: 12px; font-size: 22px; }
p { margin: 6px 0 14px; }

.eyebrow {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .16em;
    color: var(--accent-2);
    margin-bottom: 8px;
}
.muted { color: var(--muted); }
.mono {
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    overflow-wrap: anywhere;
}
.login-card {
    max-width: 520px;
    margin: 11vh auto;
}
.topbar,
.section-head,
.service-head,
.user-title {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}
.topbar { margin-bottom: 20px; }
.protocol { font-size: 20px; font-weight: 800; }

form { margin: 0; }
label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 14px;
}
input, select {
    width: 100%;
    min-height: 45px;
    padding: 11px 12px;
    border: 1px solid var(--line);
    border-radius: 11px;
    background: #091426;
    color: var(--text);
    font: inherit;
    outline: none;
}
input:focus, select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(114, 168, 255, .14);
}

button, .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 14px;
    border: 0;
    border-radius: 11px;
    background: var(--accent);
    color: #06101d;
    font: 700 14px system-ui, sans-serif;
    text-decoration: none;
    cursor: pointer;
}
.button.secondary { background: #182742; color: var(--text); border: 1px solid var(--line); }
.button.warning { background: var(--warning); color: #251403; }
.button.danger { background: var(--danger); color: #290309; }
.actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}
.small-link {
    display: inline-block;
    margin-top: 18px;
    color: var(--muted);
    font-size: 14px;
}

.alert {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px 14px;
    margin: 0 0 18px;
}
.alert.error { border-color: rgba(255,127,137,.45); color: #ffafb6; background: rgba(255,127,137,.09); }
.alert.success { border-color: rgba(104,217,156,.42); color: #a8f0c8; background: rgba(104,217,156,.09); }

.status {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    border: 1px solid var(--line);
}
.status.active { color: var(--success); border-color: rgba(104,217,156,.4); }
.status.suspended { color: var(--warning); border-color: rgba(240,180,92,.4); }
.status.archived { color: var(--danger); border-color: rgba(255,127,137,.4); }

.link-box {
    padding: 12px;
    margin-top: 14px;
    border-radius: 11px;
    border: 1px solid var(--line);
    background: #07101f;
    color: #cfe0ff;
    font: 13px/1.45 ui-monospace, SFMono-Regular, Consolas, monospace;
    overflow-wrap: anywhere;
}
.qr-grid { display: flex; justify-content: center; margin-top: 17px; }
.qr {
    width: min(280px, 100%);
    height: auto;
    padding: 10px;
    background: #fff;
    border-radius: 14px;
}
.qr.small { width: 190px; margin: 16px 0; }

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 14px;
    align-items: end;
}
.form-grid label { margin: 0; }
.form-action { padding-bottom: 1px; }

.metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.metrics.compact { margin-top: 15px; }
.metric {
    min-height: 105px;
    padding: 14px;
    border-radius: 13px;
    border: 1px solid var(--line);
    background: #0a1425;
    display: grid;
    align-content: center;
    gap: 4px;
}
.metric span, .metric small { color: var(--muted); }
.metric strong { font-size: 21px; }
.metric.featured { background: linear-gradient(135deg, rgba(72,116,190,.22), rgba(15,29,50,.9)); }

.user-list { display: grid; gap: 14px; }
.details-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-top: 15px;
}
.details-grid > div {
    min-width: 0;
    padding: 11px;
    border: 1px solid var(--line);
    background: #0a1425;
    border-radius: 11px;
}
.details-grid span {
    display: block;
    color: var(--muted);
    font-size: 12px;
    margin-bottom: 5px;
}
.details-grid strong { font-size: 14px; overflow-wrap: anywhere; }

details {
    margin-top: 15px;
    border-top: 1px solid var(--line);
    padding-top: 14px;
}
summary { cursor: pointer; font-weight: 700; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
    text-align: left;
    padding: 10px;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}
th { color: var(--muted); font-size: 13px; }

@media (max-width: 900px) {
    .details-grid { grid-template-columns: 1fr 1fr; }
    .form-grid { grid-template-columns: 1fr 1fr; }
    .form-action { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
    .container, .container.wide { width: min(100% - 18px, 100%); margin-top: 14px; }
    .card, .service-card { padding: 17px; border-radius: 14px; }
    .topbar, .section-head, .service-head, .user-title { flex-direction: column; }
    .metrics, .details-grid, .form-grid { grid-template-columns: 1fr; }
    .form-action { grid-column: auto; }
    .actions > form, .actions > form button { width: 100%; }
}

/* 2026-08-06 concurrent-network control, responsive users and backup administration */
.users-list {
    display: grid;
    gap: 10px;
    min-width: 0;
}
.users-head,
.user-summary {
    display: grid;
    grid-template-columns: minmax(170px, 1.45fr) 100px 150px 130px minmax(120px, 1fr) minmax(120px, 1fr) 118px;
    gap: 12px;
    align-items: center;
}
.users-head {
    padding: 0 14px 8px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}
.user-item {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(9, 20, 38, .72);
}
.user-item.is-open {
    border-color: rgba(114, 168, 255, .58);
    box-shadow: 0 0 0 1px rgba(114, 168, 255, .08);
}
.user-summary {
    min-width: 0;
    padding: 13px 14px;
}
.user-summary-cell {
    min-width: 0;
    overflow-wrap: anywhere;
}
.user-summary-cell > strong,
.user-summary-cell > span:not(.mobile-label) {
    display: block;
}
.user-name-cell strong { font-size: 15px; }
.mobile-label {
    display: none;
    margin-bottom: 4px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .02em;
}
.user-toggle-cell { display: flex; justify-content: flex-end; }
.user-toggle { width: 112px; white-space: nowrap; }
.user-expanded { border-top: 1px solid var(--line); }
.user-expanded[hidden] { display: none; }
.expanded-panel {
    width: 100%;
    min-width: 0;
    padding: 20px;
    background: #091426;
}
.expanded-panel h3 { margin: 22px 0 10px; font-size: 17px; }
.network-control-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 16px; }
.network-control-panel { min-width: 0; padding: 15px; border: 1px solid var(--line); border-radius: 13px; background: #0a1425; }
.network-control-panel h3 { margin-top: 0; }
.guard-status { margin: 10px 0 0; color: var(--muted); }
.warning-text { color: #ffb76b; }
.inline-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; align-items: center; margin-bottom: 12px; }
.compact-actions { margin-top: 0; }
.backup-table { margin-top: 16px; }
.backup-table table { min-width: 760px; }
.restore-form { margin-top: 15px; }
.edit-user-form { grid-template-columns: 1fr 1fr auto; }
.user-actions { padding-top: 15px; border-top: 1px solid var(--line); }
.link-actions { margin-bottom: 2px; }
input[type="file"] { padding: 8px; }

@media (max-width: 1100px) {
    .users-head,
    .user-summary {
        grid-template-columns: minmax(150px, 1.35fr) 92px 135px 115px minmax(105px, 1fr) minmax(105px, 1fr) 112px;
        gap: 9px;
    }
    .user-summary { padding-inline: 12px; font-size: 14px; }
    .network-control-columns { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
    .users-head { display: none; }
    .users-list { gap: 14px; }
    .user-summary {
        grid-template-columns: 1fr 1fr;
        gap: 14px 18px;
        align-items: start;
        padding: 16px;
    }
    .mobile-label { display: block; }
    .user-name-cell,
    .user-toggle-cell { grid-column: 1 / -1; }
    .user-toggle-cell { display: grid; justify-content: stretch; }
    .user-toggle { width: 100%; }
    .expanded-panel { padding: 16px; }
    .edit-user-form { grid-template-columns: 1fr 1fr; }
    .edit-user-form .form-action { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
    .topbar > .actions,
    .section-head > form { width: 100%; }
    .topbar > .actions .button { flex: 1 1 150px; }
    .section-head > form select { width: 100%; }
    .expanded-panel { padding: 14px; }
    .inline-form,
    .edit-user-form { grid-template-columns: 1fr; }
    .edit-user-form .form-action { grid-column: auto; }
    .network-control-panel { padding: 13px; }
    .link-actions > .button,
    .link-actions > button { flex: 1 1 150px; }
    .qr.small { display: block; margin-left: auto; margin-right: auto; }
}

@media (max-width: 520px) {
    .card { padding: 14px; }
    .user-summary { grid-template-columns: 1fr; gap: 12px; padding: 14px; }
    .user-name-cell,
    .user-toggle-cell { grid-column: auto; }
    .expanded-panel { padding: 12px; }
    .details-grid { gap: 8px; }
    .network-control-panel .section-head { gap: 8px; }
    .link-actions { display: grid; grid-template-columns: 1fr; }
    .link-actions > .button,
    .link-actions > button { width: 100%; }
    .user-actions { display: grid; grid-template-columns: 1fr; }
    .user-actions > form,
    .user-actions > form button { width: 100%; }
    .backup-table { margin-inline: -4px; }
}