:root {
    color-scheme: dark;
    --bg: #081018;
    --panel: #0f1923;
    --panel-2: #14212d;
    --line: #223442;
    --text: #f3f7f9;
    --muted: #8ea1ae;
    --accent: #27d3a2;
    --accent-soft: rgba(39, 211, 162, .12);
    --warning: #f4b860;
    --danger: #ff6b6b;
    --radius: 18px;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--bg); }
body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    background:
        radial-gradient(circle at 12% 0%, rgba(39, 211, 162, .08), transparent 28rem),
        var(--bg);
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.muted { color: var(--muted); }
.eyebrow {
    margin: 0 0 7px;
    color: var(--accent);
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .16em;
    text-transform: uppercase;
}
.brand-mark {
    display: grid;
    place-items: center;
    width: 72px;
    height: 72px;
    border: 1px solid rgba(39, 211, 162, .4);
    border-radius: 23px;
    color: var(--accent);
    background: var(--accent-soft);
    font-size: 1.65rem;
    font-weight: 900;
    letter-spacing: -.08em;
    box-shadow: inset 0 0 28px rgba(39, 211, 162, .08);
}
.brand-mark.small {
    width: 42px;
    height: 42px;
    border-radius: 13px;
    font-size: 1rem;
}
.pulse-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-right: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 5px rgba(39, 211, 162, .1);
}

.login-page {
    display: grid;
    place-items: center;
    padding: 24px;
}
.login-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(340px, .9fr);
    width: min(980px, 100%);
    min-height: 590px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 28px;
    background: rgba(15, 25, 35, .96);
    box-shadow: 0 30px 90px rgba(0, 0, 0, .36);
}
.brand-panel {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 56px;
    background:
        linear-gradient(145deg, rgba(39, 211, 162, .1), transparent 58%),
        repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,.025) 40px),
        #0b151e;
}
.brand-panel h1 {
    margin: 16px 0 10px;
    font-size: clamp(3.2rem, 8vw, 6.2rem);
    line-height: .9;
    letter-spacing: -.08em;
}
.brand-copy { max-width: 340px; color: var(--muted); font-size: 1.05rem; line-height: 1.65; }
.system-note { color: #b8c6ce; font-size: .82rem; font-weight: 700; }
.login-card {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    padding: 56px;
}
.login-card h2 { margin: 0; font-size: 2rem; }
.login-card p { margin: 8px 0 0; }
.login-card form { display: grid; gap: 20px; }
label { display: grid; gap: 9px; color: #c9d3d9; font-size: .85rem; font-weight: 700; }
input {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 12px;
    outline: none;
    color: var(--text);
    background: #0a131b;
    padding: 13px 14px;
    transition: border-color .2s, box-shadow .2s;
}
input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(39, 211, 162, .1);
}
button {
    border: 0;
    border-radius: 12px;
    color: #03130e;
    background: var(--accent);
    padding: 14px 18px;
    font-weight: 900;
    cursor: pointer;
}
button:hover { filter: brightness(1.08); }
.alert {
    border: 1px solid rgba(255, 107, 107, .35);
    border-radius: 12px;
    color: #ffd2d2;
    background: rgba(255, 107, 107, .1);
    padding: 12px 14px;
    font-size: .88rem;
}

.topbar {
    position: sticky;
    z-index: 10;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    padding: 12px max(24px, calc((100vw - 1480px) / 2));
    border-bottom: 1px solid var(--line);
    background: rgba(8, 16, 24, .9);
    backdrop-filter: blur(18px);
}
.brand-link, .user-menu { display: flex; align-items: center; gap: 12px; }
.brand-link strong, .user-menu strong { display: block; }
.brand-link small, .user-menu small { display: block; margin-top: 2px; color: var(--muted); font-size: .72rem; }
.user-menu { gap: 18px; text-align: right; font-size: .85rem; }
.logout {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 9px 13px;
    color: #c8d4da;
    font-size: .78rem;
    font-weight: 800;
}
.logout:hover { border-color: var(--accent); color: var(--accent); }
.app-shell { width: min(1480px, calc(100% - 48px)); margin: 0 auto; padding: 38px 0 56px; }
.page-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; }
.page-heading h1 { margin: 0; font-size: clamp(2rem, 3vw, 3.15rem); letter-spacing: -.045em; }
.page-heading p:last-child { margin: 9px 0 0; }
.refresh-note { color: var(--muted); font-size: .78rem; }
.metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin: 28px 0 18px;
}
.metrics article {
    display: flex;
    align-items: end;
    justify-content: space-between;
    min-height: 118px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(255,255,255,.02), transparent), var(--panel);
    padding: 22px;
}
.metrics span { color: var(--muted); font-size: .82rem; font-weight: 700; }
.metrics strong { font-size: 2.5rem; letter-spacing: -.06em; }
.metrics .metric-online { border-color: rgba(39, 211, 162, .24); background: var(--accent-soft); }
.metrics .metric-online strong { color: var(--accent); }
.workspace {
    display: grid;
    grid-template-columns: minmax(330px, .72fr) minmax(0, 1.65fr);
    min-height: 650px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
}
.client-panel { min-width: 0; border-right: 1px solid var(--line); }
.panel-title, .client-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px;
}
.panel-title h2, .client-header h2 { margin: 0; font-size: 1.35rem; }
.count-pill {
    flex: 0 0 auto;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: #b6c5cd;
    background: rgba(255,255,255,.025);
    padding: 6px 10px;
    font-size: .72rem;
    font-weight: 800;
}
.search-form { display: flex; gap: 8px; padding: 0 18px 18px; }
.search-form input { min-width: 0; padding: 10px 12px; font-size: .8rem; }
.search-form button { padding: 9px 12px; font-size: .75rem; }
.client-list { max-height: 680px; overflow: auto; border-top: 1px solid var(--line); }
.client-row {
    display: grid;
    grid-template-columns: 38px minmax(0, 1fr) auto;
    align-items: center;
    gap: 11px;
    min-height: 68px;
    border-bottom: 1px solid rgba(34, 52, 66, .7);
    padding: 10px 16px;
    transition: background .15s;
}
.client-row:hover { background: rgba(255,255,255,.025); }
.client-row.selected { background: var(--accent-soft); box-shadow: inset 3px 0 var(--accent); }
.client-avatar {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border-radius: 11px;
    color: var(--accent);
    background: var(--accent-soft);
    font-size: .8rem;
    font-weight: 900;
}
.client-main { min-width: 0; }
.client-main strong, .client-main small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.client-main strong { font-size: .84rem; }
.client-main small { margin-top: 4px; color: var(--muted); font-size: .7rem; }
.account { color: #8da0ac; font-family: ui-monospace, monospace; font-size: .7rem; }
.detail-panel { min-width: 0; padding: 4px 24px 28px; }
.client-header { margin: 0 -24px; border-bottom: 1px solid var(--line); }
.client-header .muted { margin: 7px 0 0; font-size: .82rem; }
.section-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin: 24px 0 13px;
}
.section-heading h3 { margin: 0; font-size: .95rem; }
.section-heading span { color: var(--muted); font-size: .7rem; }
.device-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.device-card {
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--panel-2);
    padding: 15px;
}
.device-card-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.status { display: inline-flex; align-items: center; gap: 6px; font-size: .66rem; font-weight: 800; }
.status i { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.status.online { color: var(--accent); }
.status.delayed { color: var(--warning); }
.status.offline { color: #748792; }
.device-type { color: var(--muted); font-size: .65rem; }
.device-card h4 { overflow: hidden; margin: 18px 0 8px; font-size: .9rem; text-overflow: ellipsis; white-space: nowrap; }
.device-card code { display: block; overflow: hidden; color: #91a6b2; font-size: .7rem; text-overflow: ellipsis; }
.device-card p { margin: 12px 0 0; color: var(--muted); font-size: .68rem; }
.events-heading { margin-top: 30px; }
.event-list { overflow: hidden; border: 1px solid var(--line); border-radius: 14px; }
.event-row {
    display: grid;
    grid-template-columns: 8px minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    min-height: 58px;
    border-bottom: 1px solid var(--line);
    padding: 9px 14px;
}
.event-row:last-child { border-bottom: 0; }
.event-mark { width: 8px; height: 8px; border-radius: 50%; }
.event-mark.event-new { background: var(--danger); box-shadow: 0 0 0 4px rgba(255,107,107,.08); }
.event-mark.event-restore { background: var(--accent); box-shadow: 0 0 0 4px rgba(39,211,162,.08); }
.event-row strong, .event-row small { display: block; }
.event-row strong { font-family: ui-monospace, monospace; font-size: .76rem; }
.event-row small { margin-top: 4px; color: var(--muted); font-size: .67rem; }
.event-row time { color: var(--muted); font-size: .68rem; }
.empty, .empty-state { color: var(--muted); }
.empty { padding: 20px; text-align: center; font-size: .82rem; }
.empty-state { display: grid; place-items: center; align-content: center; min-height: 590px; text-align: center; }
.empty-state h2 { margin: 18px 0 5px; color: var(--text); }
.empty-state p { margin: 0; }
.empty-icon {
    display: grid;
    place-items: center;
    width: 72px;
    height: 72px;
    border: 1px dashed rgba(39, 211, 162, .35);
    border-radius: 24px;
    color: var(--accent);
    background: var(--accent-soft);
    font-weight: 900;
}

@media (max-width: 1050px) {
    .device-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .workspace { grid-template-columns: 340px minmax(0, 1fr); }
}
@media (max-width: 780px) {
    .login-shell { grid-template-columns: 1fr; }
    .brand-panel { min-height: 260px; padding: 34px; }
    .brand-panel h1 { font-size: 3.8rem; }
    .login-card { padding: 34px; }
    .topbar { padding: 10px 16px; }
    .user-menu div { display: none; }
    .app-shell { width: min(100% - 24px, 1480px); padding-top: 24px; }
    .page-heading { align-items: start; flex-direction: column; }
    .metrics { grid-template-columns: 1fr; }
    .metrics article { min-height: 86px; }
    .workspace { display: block; }
    .client-panel { border-right: 0; }
    .client-list { max-height: 380px; }
    .detail-panel { border-top: 1px solid var(--line); }
}
@media (max-width: 520px) {
    .login-page { padding: 0; }
    .login-shell { min-height: 100vh; border: 0; border-radius: 0; }
    .brand-panel { min-height: 220px; }
    .device-grid { grid-template-columns: 1fr; }
    .client-header { align-items: start; flex-direction: column; }
    .event-row { grid-template-columns: 8px minmax(0, 1fr); }
    .event-row time { grid-column: 2; }
}