/* ── Syntell Brand Design System ─────────────────────────── */
:root {
    /* Syntell brand */
    --brand:        #ea5900;
    --brand-hover:  #d14d00;
    --brand-glow:   rgba(234,89,0,0.25);

    /* Backgrounds (synops dark theme) */
    --bg:           #0f172a;
    --bg-card:      #1e293b;
    --bg-sidebar:   #171721;
    --bg-topbar:    #1a2132;
    --border:       rgba(255,255,255,0.08);
    --border-solid: #334155;

    /* Text */
    --text:         #f8fafc;
    --text-sec:     #94a3b8;
    --text-muted:   #64748b;

    /* Card title accent — Syntell orange */
    --title-accent: #ea5900;

    /* Traffic signal colours (semantic – do not rebrand) */
    --sig-green:  #10b981;
    --sig-amber:  #f59e0b;
    --sig-red:    #ef4444;
    --sig-blue:   #3b82f6;
    --lamp-off:   #1e293b;

    --safe:   #10b981;
    --warn:   #f59e0b;
    --danger: #ef4444;

    --font: 'Inter', system-ui, sans-serif;
    --mono: 'Roboto Mono', monospace;

    --radius: 10px;
    --radius-sm: 6px;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    height: 100vh;
    overflow: hidden;
}

/* ── Login overlay ───────────────────────────────────────── */
.login-overlay {
    position: fixed; inset: 0; z-index: 9999;
    background: var(--bg);
    display: flex; align-items: center; justify-content: center;
}
.login-card {
    background: var(--bg-card); border: 1px solid rgba(255,255,255,0.08);
    border-radius: 14px; padding: 40px 36px; width: 340px;
    display: flex; flex-direction: column; align-items: center; gap: 6px;
    box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
.login-logo { display: flex; align-items: baseline; gap: 6px; }
.login-sub { font-size: 0.72rem; color: var(--text-muted); margin-bottom: 24px; }
.login-form { width: 100%; display: flex; flex-direction: column; gap: 14px; }
.login-field { display: flex; flex-direction: column; gap: 5px; }
.login-field label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }
.login-field input {
    background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
    border-radius: 7px; color: var(--text); font-size: 0.88rem;
    padding: 9px 12px; outline: none; transition: border-color 0.15s;
}
.login-field input:focus { border-color: var(--brand); }
.login-err {
    font-size: 0.78rem; color: var(--sig-red);
    background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.2);
    border-radius: 6px; padding: 7px 10px; display: flex; align-items: center; gap: 7px;
}
.login-btn {
    margin-top: 4px; width: 100%; padding: 10px;
    background: var(--brand); border: none; border-radius: 7px;
    color: #fff; font-size: 0.88rem; font-weight: 600; cursor: pointer;
    transition: background 0.15s;
}
.login-btn:hover { background: var(--brand-hover); }

.app-shell {
    display: flex;
    width: 100vw;
    height: 100vh;
}

/* ── Sidebar ──────────────────────────────────────────────── */
.sidebar {
    width: 148px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 18px 0 12px;
    flex-shrink: 0;
}

.brand {
    padding: 0 14px 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 8px;
}

.brand-logo { display: flex; align-items: baseline; gap: 6px; margin-bottom: 2px; }
.brand-xte  { font-size: 1.5rem; font-weight: 900; color: var(--sig-green); letter-spacing: -1px; }
.brand-sub  { font-size: 0.65rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.brand-by   { font-size: 0.55rem; color: var(--brand); font-weight: 700; text-transform: uppercase; letter-spacing: 1px; opacity: 0.9; }

.nav-items { flex: 1; overflow-y: auto; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 500;
    transition: all 0.18s ease;
    position: relative;
    border-left: 3px solid transparent;
    margin: 1px 0;
}

.nav-item i { font-size: 0.95rem; width: 16px; flex-shrink: 0; }
.nav-item:hover { color: var(--text-sec); background: rgba(255,255,255,0.03); }

.nav-item.active {
    color: var(--brand);
    background: rgba(234,89,0,0.08);
    border-left-color: var(--brand);
    font-weight: 600;
}

.sidebar-footer {
    padding: 14px;
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.sys-health {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sys-health-icon {
    width: 36px; height: 36px;
    background: rgba(16,185,129,0.12);
    border: 1px solid rgba(16,185,129,0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sig-green);
    font-size: 0.9rem;
    flex-shrink: 0;
}

.sys-health-label { font-size: 0.65rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.3px; }
.sys-health-val   { font-size: 0.78rem; font-weight: 700; color: var(--sig-green); }

/* ── Main Layout ──────────────────────────────────────────── */
.main-layout {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
}

/* ── Top Bar ──────────────────────────────────────────────── */
.top-bar {
    height: 62px;
    background: var(--bg-topbar);
    border-bottom: 1px solid var(--border);
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    padding: 0 20px;
    gap: 20px;
    flex-shrink: 0;
}

.top-left  { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.top-center { text-align: center; min-width: 0; }
.top-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

.conn-badge {
    display: flex; align-items: center; gap: 6px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.7rem; font-weight: 700;
    text-transform: uppercase;
    white-space: nowrap;
}
.conn-badge.connected    { background: rgba(16,185,129,0.1); color: var(--sig-green); border: 1px solid rgba(16,185,129,0.25); }
.conn-badge.disconnected { background: rgba(239,68,68,0.1);  color: var(--sig-red);   border: 1px solid rgba(239,68,68,0.25); }

.conn-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; animation: blink 1.4s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }

.top-ip { font-size: 0.72rem; color: var(--text-muted); font-family: var(--mono); }

.top-center h1 { font-size: 1rem; font-weight: 800; letter-spacing: -0.2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.site-ref { font-size: 0.65rem; color: var(--text-muted); font-family: var(--mono); }

.top-stat-group { display: flex; align-items: center; gap: 14px; }

.top-stat { display: flex; align-items: center; gap: 8px; }
.top-stat-col { display: flex; flex-direction: column; gap: 1px; }
.top-stat-val { font-family: var(--mono); font-size: 0.82rem; color: var(--text); }
.top-stat-val.brand { color: var(--brand); font-weight: 700; font-size: 0.9rem; }
.top-stat-lbl { font-size: 0.58rem; color: var(--text-muted); text-transform: uppercase; }

.top-stat-divider { width: 1px; height: 26px; background: var(--border); }

.clock-block { text-align: right; }
.clock-time { font-family: var(--mono); font-size: 1.4rem; font-weight: 700; line-height: 1; }
.clock-date { font-size: 0.6rem; color: var(--text-muted); margin-top: 2px; }

.top-icon-btn {
    width: 30px; height: 30px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-muted);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem;
    transition: all 0.2s;
}
.top-icon-btn:hover { color: var(--text); background: rgba(255,255,255,0.1); }
.pwa-install-btn { color: var(--brand) !important; border-color: rgba(234,89,0,0.4) !important; }

/* ── Content ──────────────────────────────────────────────── */
.content-view {
    flex: 1;
    overflow-y: auto;
    padding: 14px;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── Dashboard Grid ───────────────────────────────────────── */
.dash-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
}

.c-hw           { grid-column: 1; grid-row: 1; }
.c-traffic-card { grid-column: 2; grid-row: 1; }
.c-logic        { grid-column: 3; grid-row: 1; }
.c-utc          { grid-column: 4; grid-row: 1; }
.c-alerts       { grid-column: 5; grid-row: 1; }

.c-srvinfo   { grid-column: 1 / 6; grid-row: 2; }
.c-utcbits   { grid-column: 1 / 6; grid-row: 3; }
.c-timings   { grid-column: 1 / 6; grid-row: 4; }

.c-phases    { grid-column: 1 / 6; grid-row: 5; }

.c-sensors   { grid-column: 1 / 6; grid-row: 6; }

/* ── Cards ────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
}

.card-hdr {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.card-title-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-icon { font-size: 0.85rem; color: var(--title-accent); }
.alert-icon { color: var(--sig-red) !important; }

.card-title {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--title-accent);
}
.alert-title { color: var(--sig-red) !important; }

.card-link-btn {
    background: none; border: none; cursor: pointer;
    color: var(--text-muted); font-size: 0.68rem;
    font-family: var(--font);
    display: flex; align-items: center; gap: 4px;
    padding: 0; margin-top: auto; padding-top: 12px;
    transition: color 0.2s;
}
.card-link-btn:hover { color: var(--brand); }

.card-link-btn-sm {
    background: none; border: none; cursor: pointer;
    color: var(--text-muted); font-size: 0.65rem;
    font-family: var(--font);
    display: flex; align-items: center; gap: 4px;
    padding: 0; transition: color 0.2s;
}
.card-link-btn-sm:hover { color: var(--brand); }

/* ── Metrics ──────────────────────────────────────────────── */
.metric-list { display: flex; flex-direction: column; gap: 10px; }
.metric-row  { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.metric-row .mval { white-space: nowrap; }
.mlabel      { color: var(--text-muted); font-size: 0.78rem; }
.mval        { font-family: var(--mono); font-size: 0.85rem; color: var(--text); }
.mval-r      { display: flex; align-items: center; gap: 8px; }
.accent      { color: var(--sig-green) !important; }
.ev-none     { color: var(--text-muted) !important; }

.sdot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.sdot.safe   { background: var(--safe);   box-shadow: 0 0 6px var(--safe); }
.sdot.warn   { background: var(--warn);   box-shadow: 0 0 6px var(--warn); }
.sdot.danger { background: var(--danger); box-shadow: 0 0 6px var(--danger); }

/* ── Alerts ───────────────────────────────────────────────── */
.alerts-view { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.no-alerts { display: flex; align-items: center; gap: 12px; }
.no-alerts-check { font-size: 1.8rem; color: var(--sig-green); }
.no-alerts-text  { font-size: 0.82rem; font-weight: 600; }
.no-alerts-sub   { font-size: 0.65rem; color: var(--text-muted); margin-top: 2px; }

/* ── Stage Timings & Gantt ────────────────────────────────── */
.cycle-badge { font-size: 0.68rem; color: var(--text-muted); white-space: nowrap; }
.cycle-badge strong { color: var(--text-sec); font-family: var(--mono); }

.timings-layout { display: flex; gap: 16px; align-items: flex-start; }

.timings-table { flex: 0 0 270px; }

.timings-thead {
    display: grid;
    grid-template-columns: 34px 56px 56px 56px 56px;
    color: var(--text-muted);
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 5px;
}

.timings-tbody { display: flex; flex-direction: column; gap: 4px; }

.timing-row {
    display: grid;
    grid-template-columns: 34px 56px 56px 56px 56px;
    align-items: center;
    height: 24px;
}
.stage-pill {
    width: 22px; height: 22px;
    border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 0.7rem; font-weight: 800; color: #fff;
}
.stage-dur { font-family: var(--mono); font-size: 0.74rem; color: var(--text); }
.stage-avg { font-family: var(--mono); font-size: 0.74rem; color: var(--text-muted); }
.stage-min { font-family: var(--mono); font-size: 0.74rem; color: var(--sig-green); }
.stage-max { font-family: var(--mono); font-size: 0.74rem; color: #f87171; }

.gantt-wrap { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0; }

.gantt-axis {
    display: flex;
    justify-content: space-between;
    font-size: 0.65rem;
    color: #94a3b8;
    padding-bottom: 5px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 5px;
    position: relative;
}

.gantt-axis::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: 0;
    border-bottom: 1px dashed rgba(255,255,255,0.06);
}

.gantt-bars { display: flex; flex-direction: column; gap: 4px; }

.gantt-row {
    display: flex;
    align-items: center;
    height: 24px;
    background: rgba(255,255,255,0.02);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.gantt-bar {
    height: 100%;
    display: flex;
    align-items: center;
    padding-left: 8px;
    font-family: var(--mono);
    font-size: 0.68rem;
    color: rgba(255,255,255,0.9);
    font-weight: 600;
    min-width: 36px;
    transition: width 0.5s ease;
    border-radius: 3px;
}

.gantt-overlap {
    position: absolute; right: 0; top: 0; bottom: 0; width: 22px;
    background: repeating-linear-gradient(
        45deg,
        rgba(255,255,255,0.07) 0, rgba(255,255,255,0.07) 3px,
        transparent 3px, transparent 8px
    );
}

.gantt-legend {
    display: flex;
    gap: 14px;
    margin-top: 10px;
    flex-wrap: wrap;
}
.gleg { display: flex; align-items: center; gap: 5px; font-size: 0.65rem; color: var(--text-muted); }
.gleg-swatch { width: 12px; height: 10px; border-radius: 2px; }
.gleg-overlap {
    background: repeating-linear-gradient(
        45deg,
        rgba(255,255,255,0.3) 0, rgba(255,255,255,0.3) 2px,
        rgba(60,60,60,0.5) 2px, rgba(60,60,60,0.5) 5px
    );
}

/* ── Active Stage Highlight ───────────────────────────────── */
.timing-row.stage-active {
    background: rgba(245, 158, 11, 0.12);
    border-left: 3px solid var(--sig-amber);
    padding-left: 5px;
    border-radius: 3px;
}
.timing-row.stage-active .stage-dur {
    color: var(--sig-amber);
    font-weight: 700;
}
.gantt-row.stage-active .gantt-bar {
    box-shadow: 0 0 6px rgba(245, 158, 11, 0.6);
}

/* ── Phase Grid ───────────────────────────────────────────── */
.phases-grid {
    display: grid;
    grid-template-columns: repeat(32, 1fr);
    gap: 6px;
}

.phase-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
}

.phase-lbl {
    font-size: 0.62rem;
    font-weight: 600;
    color: var(--text-muted);
    font-family: var(--mono);
    text-transform: uppercase;
    white-space: nowrap;
}

/* Signal head housing */
.sig-housing {
    background: #111418;
    border: 1px solid #2a3340;
    border-radius: 6px;
    padding: 8px 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    width: 100%;
}

/* Lamps — dim by default, bright + glow when on */
.sig-lamp { width: 13px; height: 13px; border-radius: 50%; transition: background 0.15s, box-shadow 0.15s; }
.sig-r    { background: #2d0a0a; }
.sig-a    { background: #1f1100; }
.sig-g    { background: #041a0d; }
.sig-r.on { background: #ff2a2a; box-shadow: 0 0 6px 2px rgba(255,42,42,0.75); }
.sig-a.on { background: #ffcc00; box-shadow: 0 0 6px 2px rgba(255,204,0,0.75); }
.sig-g.on { background: #00ff7f; box-shadow: 0 0 6px 2px rgba(0,255,127,0.75); }

/* Flash mode — red lamps blink, amber/green stay dark */
@keyframes lampFlash { 0%,49% { background:#ff2a2a; box-shadow:0 0 8px 3px rgba(255,42,42,0.85); } 50%,100% { background:#2d0a0a; box-shadow:none; } }
.sig-r.flashing { animation: lampFlash 1s step-start infinite; }

/* ── Sensor Matrix ────────────────────────────────────────── */
.sensors-grid {
    display: grid;
    grid-template-columns: repeat(32, 1fr);
    gap: 3px;
}

.sensor-cell {
    background: #131b2c;
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.58rem;
    font-family: var(--mono);
    color: #4a5568;
    padding: 5px 2px;
    min-height: 26px;
    transition: background 0.1s, color 0.1s, border-color 0.1s;
    user-select: none;
    cursor: default;
}
.sensor-cell.active {
    background: var(--sig-green);
    border-color: var(--sig-green);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 0 8px rgba(16,185,129,0.4);
}
.sensor-cell.occupied {
    background: var(--sig-amber);
    border-color: var(--sig-amber);
    color: #fff;
    font-weight: 700;
}
.sensor-cell.fault {
    background: var(--sig-red);
    border-color: var(--sig-red);
    color: #fff;
    font-weight: 700;
}

.sensor-legend {
    display: flex;
    gap: 16px;
    margin-top: 10px;
    flex-wrap: wrap;
}
.sleg { display: flex; align-items: center; gap: 6px; font-size: 0.65rem; color: var(--text-muted); }
.sleg-dot { width: 10px; height: 10px; border-radius: 2px; }

/* ── Event Log ────────────────────────────────────────────── */
.event-log {
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    flex: 1;
    max-height: 280px;
}

.event-item {
    display: grid;
    grid-template-columns: 20px 60px 1fr 64px;
    align-items: center;
    gap: 6px;
    padding: 6px 2px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    font-size: 0.7rem;
}
.event-item:last-child { border-bottom: none; }

.ev-icon { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; margin: 0 auto; }
.ev-icon.stage    { background: var(--sig-green); }
.ev-icon.system   { background: var(--sig-blue);  }
.ev-icon.warning  { background: var(--sig-amber); }
.ev-icon.fault    { background: var(--sig-red);   }
.ev-icon.plan     { background: #8b5cf6; }
.ev-icon.operator { background: #06b6d4; }
.ev-icon.detector { background: #f97316; }

.ev-time { font-family: var(--mono); font-size: 0.66rem; color: var(--text-muted); }
.ev-desc { color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ev-sev  { font-size: 0.6rem; font-weight: 700; text-align: right; }
.ev-sev.normal   { color: var(--text-muted); }
.ev-sev.warning  { color: var(--sig-amber); }
.ev-sev.fault    { color: var(--sig-red); }
.ev-sev.operator { color: #06b6d4; }
.ev-sev.detector { color: #f97316; }
.ev-sev.system   { color: var(--text-muted); }

/* ── Fault Alert Banner ──────────────────────────────────── */
.fault-banner {
    background: rgba(220, 38, 38, 0.12);
    border-bottom: 1px solid rgba(220, 38, 38, 0.4);
    padding: 0 16px;
    flex-shrink: 0;
    animation: faultPulse 2s ease-in-out infinite;
}
@keyframes faultPulse {
    0%, 100% { border-bottom-color: rgba(220,38,38,0.4); }
    50%       { border-bottom-color: rgba(220,38,38,0.9); }
}
.fault-banner-items { display: flex; flex-wrap: wrap; gap: 6px; padding: 6px 0; }
.fault-chip {
    display: inline-flex; align-items: center; gap: 5px;
    background: rgba(220,38,38,0.2); border: 1px solid rgba(220,38,38,0.5);
    border-radius: 4px; padding: 2px 8px; font-size: 0.72rem; color: #fca5a5;
}
.fault-chip.warn {
    background: rgba(245,158,11,0.2); border-color: rgba(245,158,11,0.5); color: #fcd34d;
}
.fault-chip i { font-size: 0.65rem; }

/* ── Status Bar (footer) ──────────────────────────────────── */
.status-bar {
    height: 32px;
    background: var(--bg-sidebar);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    font-size: 0.67rem;
    color: var(--text-muted);
    flex-shrink: 0;
}
.status-bar strong { color: var(--text-sec); }
.status-left, .status-right { display: flex; align-items: center; gap: 8px; }
.status-sep { color: var(--border-solid); }

.live-pill {
    display: flex;
    align-items: center;
    gap: 5px;
    background: rgba(16,185,129,0.1);
    border: 1px solid rgba(16,185,129,0.2);
    border-radius: 10px;
    padding: 2px 8px;
    color: var(--sig-green);
    font-weight: 600;
    font-size: 0.63rem;
}
.live-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--sig-green); animation: blink 1.4s infinite; }

/* ── Timeline (Timings tab) ───────────────────────────────── */
.timeline-panel { background: #000; border-radius: 4px; padding: 8px; overflow-x: hidden; }
.timeline-row { display: flex; height: 16px; border-bottom: 1px solid #0f0f0f; }
.timeline-row-label { width: 48px; font-size: 0.6rem; color: #666; background: #050505; display: flex; align-items: center; padding-left: 4px; flex-shrink: 0; font-family: var(--mono); }
.timeline-cells { display: flex; flex: 1; height: 100%; }
.timeline-cell  { flex: 1; height: 100%; border-right: 1px solid #0f0f0f; }
.tm-phase-green  { background: #0d6b0d; }
.tm-phase-red    { background: #7a0a0a; }
.tm-phase-amber  { background: #6b5a00; }
.tm-stage-active { background: #0d6b0d; border-top: 1px solid #1a9a1a; border-bottom: 1px solid #1a9a1a; }
.tm-phase-striped {
    background-image: repeating-linear-gradient(
        45deg, rgba(0,0,0,0.4) 0, rgba(0,0,0,0.4) 3px,
        transparent 3px, transparent 6px
    );
}

/* ── Charts ───────────────────────────────────────────────── */

/* Top bar sparkline */
.rate-sparkline { width: 60px; height: 32px; }

/* HW Health sparklines */
.hw-sparklines {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin: 12px 0 10px;
}
.hw-spark { display: flex; flex-direction: column; gap: 3px; }
.hw-spark canvas { height: 48px !important; width: 100% !important; }

.spark-lbl {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #94a3b8;
}

/* Live Traffic donut layout */
.traffic-layout { display: flex; gap: 12px; align-items: center; flex: 1; }

.donut-wrap {
    position: relative;
    width: 90px;
    height: 90px;
    flex-shrink: 0;
}
.donut-wrap canvas { width: 100% !important; height: 100% !important; }

.donut-center {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}
.donut-num { font-family: var(--mono); font-size: 1.1rem; font-weight: 800; line-height: 1; }
.donut-sub { font-size: 0.55rem; color: var(--text-muted); text-transform: uppercase; margin-top: 1px; }

.leg-dot-sm {
    display: inline-block;
    width: 7px; height: 7px;
    border-radius: 50%;
    margin-right: 3px;
    vertical-align: middle;
}

/* Cycle time chart */
.cycle-chart-wrap {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}
.cycle-chart-hdr {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}
.cycle-method-lbl {
    font-size: 0.65rem;
    color: #94a3b8;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-solid);
    border-radius: 4px;
    padding: 1px 5px;
    margin-left: 6px;
    font-weight: 400;
    vertical-align: middle;
}
.cycle-stats-row {
    display: flex;
    gap: 0;
    margin-bottom: 10px;
}
.cycle-stat {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 4px 0;
    border-right: 1px solid var(--border);
}
.cycle-stat:last-child { border-right: none; }
.cycle-stat-lbl { font-size: 0.65rem; color: #94a3b8; text-transform: uppercase; letter-spacing: 0.5px; }
.cycle-stat-val { font-size: 0.85rem; font-family: var(--mono); margin-top: 2px; }
.cycle-chart-wrap canvas { height: 110px !important; width: 100% !important; }

/* ── UTC Bit Grid ─────────────────────────────────────────── */
.utcbits-wrap { display: flex; flex-direction: column; gap: 8px; }
.utcbits-row  { display: flex; align-items: center; gap: 6px; }
.utcbits-lbl  { font-size: 0.68rem; color: var(--text-muted); font-family: var(--mono); width: 72px; flex-shrink: 0; }
.utcbits-cells{ display: flex; flex-wrap: wrap; gap: 4px; }
.utcbit {
    font-size: 0.62rem; font-family: var(--mono); font-weight: 600;
    padding: 2px 6px; border-radius: 3px; border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.03); color: #3a4a5a;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    white-space: nowrap;
}
.utcbit.active-cmd { background: rgba(234,89,0,0.18); color: #ea5900; border-color: rgba(234,89,0,0.4); }
.utcbit.active-rep { background: rgba(0,200,120,0.15); color: #00c878; border-color: rgba(0,200,120,0.35); }
.utcbits-empty { font-size: 0.7rem; color: var(--text-muted); font-style: italic; }

.srvinfo-inner { display: flex; align-items: center; gap: 24px; width: 100%; }
.srvinfo-title-group { display: flex; align-items: center; gap: 8px; white-space: nowrap; min-width: 180px; }
.srvinfo-host { font-size: 0.72rem; color: var(--text-muted); font-family: var(--mono); margin-left: 4px; }
.srvinfo-stats { display: flex; flex: 1; gap: 16px; align-items: center; }
.srvinfo-stat { display: flex; flex-direction: column; gap: 4px; flex: 1; min-width: 0; }
.srvinfo-stat-sm { flex: 0 0 140px; }
.srvinfo-bar { height: 5px; background: rgba(255,255,255,0.06); border-radius: 3px; overflow: hidden; margin-top: 2px; }
.srvinfo-bar-fill { height: 100%; border-radius: 3px; background: var(--accent); transition: width 0.4s ease; }
.srvinfo-bar-fill.warn { background: #f59e0b; }
.srvinfo-bar-fill.danger { background: #ef4444; }

.trend-badge {
    font-size: 0.62rem;
    font-weight: 700;
    font-family: var(--mono);
}
.trend-badge.up   { color: var(--sig-red); }
.trend-badge.down { color: var(--sig-green); }
.trend-badge.flat { color: var(--text-muted); }

/* Phase donut (inline in header) */
.phase-summary-row {
    display: flex;
    align-items: center;
    gap: 10px;
}
.phase-sum {
    font-size: 0.62rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 3px;
}
.phase-sum.green { color: var(--sig-green); }
.phase-sum.amber { color: var(--sig-amber); }
.phase-sum.red   { color: var(--sig-red); }

.phase-donut-canvas { width: 36px !important; height: 36px !important; }

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.18); }

/* ── Event / Fault Log Viewer ─────────────────────────────── */
#tab-events { padding: 0; overflow: hidden; }
.log-wrap    { display: flex; flex-direction: column; height: 100%; }

.log-toolbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 14px; background: var(--bg-topbar);
    border-bottom: 1px solid var(--border); gap: 10px; flex-shrink: 0;
}
.log-tl-left, .log-tl-right { display: flex; align-items: center; gap: 6px; }

.log-type-btn, .log-src-btn, .log-refresh-btn {
    display: flex; align-items: center; gap: 5px; padding: 5px 12px;
    border: 1px solid var(--border); border-radius: 6px;
    background: rgba(255,255,255,0.04); color: var(--text-sec);
    font-size: 0.75rem; cursor: pointer; transition: background 0.15s, color 0.15s;
}
.log-type-btn:hover, .log-src-btn:hover, .log-refresh-btn:hover { background: rgba(255,255,255,0.08); color: var(--text); }
.log-type-btn.active { background: rgba(234,89,0,0.15); border-color: var(--brand); color: var(--brand); }
.log-src-btn.active  { background: rgba(59,130,246,0.15); border-color: #3b82f6; color: #3b82f6; }
.log-refresh-btn     { color: var(--brand); border-color: rgba(234,89,0,0.4); }

.log-search {
    padding: 5px 10px; background: rgba(255,255,255,0.05);
    border: 1px solid var(--border); border-radius: 6px;
    color: var(--text); font-size: 0.75rem; outline: none; width: 200px;
}
.log-search:focus { border-color: var(--brand); }

.log-status-bar {
    display: flex; align-items: center; gap: 16px;
    padding: 5px 14px; font-size: 0.68rem; color: var(--text-muted);
    border-bottom: 1px solid var(--border); flex-shrink: 0;
    background: rgba(255,255,255,0.02);
}
.log-status-msg { color: var(--sig-amber); }
.log-status-msg.ok { color: var(--sig-green); }
.log-status-msg.err { color: var(--sig-red); }

.log-pagination {
    display: flex; align-items: center; gap: 4px;
    padding: 6px 0 8px;
    flex-wrap: wrap;
}
.log-pg-btn {
    background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
    color: #94a3b8; font-size: 0.72rem; font-family: var(--mono);
    padding: 3px 9px; border-radius: 4px; cursor: pointer; min-width: 30px;
    transition: background 0.12s, color 0.12s;
}
.log-pg-btn:hover:not(:disabled) { background: rgba(234,89,0,0.12); color: var(--brand); border-color: var(--brand); }
.log-pg-btn.active { background: rgba(234,89,0,0.18); color: var(--brand); border-color: var(--brand); font-weight: 700; }
.log-pg-btn:disabled { opacity: 0.3; cursor: default; }

.log-table-wrap { flex: 1; overflow-y: auto; }
.log-syslog-panel { display: flex; flex-direction: column; height: 100%; }
.log-syslog-panel .log-table th { cursor: pointer; user-select: none; }
.log-syslog-panel .log-table th:hover { background: rgba(255,255,255,0.06); }
.log-syslog-panel .log-table th:first-child { width: 180px; }
.log-syslog-panel .log-table th:nth-child(2) { width: 120px; }
.log-syslog-panel .log-table td:first-child { font-family: var(--mono); font-size: 0.8rem; color: #888; }
.log-syslog-panel .log-table td:nth-child(2) { font-family: var(--mono); font-size: 0.8rem; color: #a78bfa; }
.log-syslog-panel .log-table td:nth-child(3) { font-family: var(--mono); font-size: 0.8rem; color: #888; overflow: hidden; text-overflow: ellipsis; }
.syslog-input { padding: 4px 8px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.06); border-radius: 3px; color: var(--text); font-size: 0.85rem; width: 80px; }

/* ── Detectors Tab ────────────────────────────────────── */
.det-wrap { padding: 14px; display: flex; flex-direction: column; gap: 14px; }
.det-header { display: flex; justify-content: space-between; align-items: center; }
.det-title { display: flex; align-items: center; gap: 10px; }
.det-title h2 { font-size: 1.1rem; margin: 0; }
.det-controls { display: flex; gap: 16px; font-size: 0.85rem; }
.det-controls label { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.det-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 6px; }
.det-empty { grid-column: 1 / -1; color: var(--text-muted); font-size: 0.85rem; padding: 32px; text-align: center; }
.det-group-hdr { grid-column: 1 / -1; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.1em; color: #a78bfa; padding: 6px 2px 2px; border-bottom: 1px solid rgba(167,139,250,0.2); }
.det-card { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 4px; padding: 8px; display: flex; flex-direction: column; gap: 4px; }
.det-card.active { background: rgba(0,200,120,0.1); border-color: rgba(0,200,120,0.35); }
.det-card.fault  { background: rgba(255,42,42,0.1);  border-color: rgba(255,42,42,0.4); }
.det-num { font-family: var(--mono); font-size: 0.72rem; font-weight: 600; color: #ccc; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.det-name { font-family: inherit; font-weight: 400; color: #888; font-size: 0.65rem; }
.det-spark { width: 100%; height: 22px; background: rgba(255,255,255,0.02); border-radius: 2px; }
.det-footer { font-size: 0.7rem; display: flex; align-items: center; gap: 4px; }
.det-label { flex: 1; color: #888; }
.det-pct { color: #555; font-family: var(--mono); font-size: 0.65rem; }
.det-badge { display: inline-block; width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.det-badge.on  { background: #00ff7f; box-shadow: 0 0 4px rgba(0,255,127,0.7); }
.det-badge.off { background: #444; }
.log-table { width: 100%; border-collapse: collapse; font-size: 0.73rem; }
.log-table thead th {
    position: sticky; top: 0; background: #0f1724; padding: 8px 12px;
    text-align: left; font-size: 0.62rem; text-transform: uppercase;
    letter-spacing: 0.06em; color: var(--text-muted);
    border-bottom: 1px solid var(--border); font-weight: 600;
}
.log-table tbody tr { border-bottom: 1px solid rgba(255,255,255,0.04); transition: background 0.1s; }
.log-table tbody tr:hover { background: rgba(255,255,255,0.03); }
.log-table td { padding: 7px 12px; color: var(--text-sec); vertical-align: top; }
.log-table td.log-dt   { color: var(--text-muted); font-family: var(--mono); font-size: 0.68rem; white-space: nowrap; }
.log-table td.log-code { color: #64748b; font-family: var(--mono); font-size: 0.68rem; }
.log-table td.log-msg  { color: var(--text); }
.log-table td.log-cat  { color: var(--text-muted); font-family: var(--mono); font-size: 0.65rem; }
.log-table td.log-params { color: #64748b; font-family: var(--mono); font-size: 0.65rem; }
.log-row-fault .log-msg { color: #fca5a5; }
.log-row-warn  .log-msg { color: #fcd34d; }

/* Analytics panel */
.log-analytics { background: rgba(255,255,255,0.015); border-bottom: 1px solid var(--border); padding: 10px 14px; flex-shrink: 0; }
.log-stat-row  { display: flex; gap: 10px; margin-bottom: 10px; }
.log-stat-card {
    flex: 1; background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 8px; padding: 8px 12px;
}
.log-stat-val  { font-size: 1.3rem; font-weight: 700; font-family: var(--mono); line-height: 1; }
.log-stat-lbl  { font-size: 0.6rem; color: var(--text-muted); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.06em; }

.log-charts-row { display: flex; gap: 10px; }
.log-chart-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 8px; padding: 8px 12px; min-width: 0;
}
.log-chart-title { font-size: 0.62rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px; }
.log-chart-wrap  { position: relative; height: 120px; }

/* ══════════════════════════════════════════════════════════════
   JUNCTION VIEW BUILDER
══════════════════════════════════════════════════════════════ */

#tab-junction { padding: 0; overflow: hidden; }

.jb-wrap { display: flex; flex-direction: column; height: 100%; }

/* Toolbar */
.jb-toolbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 7px 14px; background: var(--bg-topbar);
    border-bottom: 1px solid var(--border); gap: 8px; flex-shrink: 0;
}
.jb-tl-left  { display: flex; align-items: center; gap: 8px; }
.jb-tl-title { color: var(--text); font-weight: 500; font-size: 0.875rem; }
.jb-tl-right { display: flex; align-items: center; gap: 5px; }
.jb-tl-sep   { width: 1px; height: 18px; background: var(--border); margin: 0 3px; }
.jb-zoom-lbl { font-size: 0.72rem; color: var(--text-muted); font-family: var(--mono); min-width: 36px; text-align: center; }

.jb-tbtn {
    display: flex; align-items: center; gap: 5px;
    padding: 5px 9px; border: 1px solid var(--border); border-radius: 6px;
    background: rgba(255,255,255,0.04); color: var(--text-sec);
    font-size: 0.72rem; cursor: pointer; transition: background 0.15s, color 0.15s;
}
.jb-tbtn:hover { background: rgba(255,255,255,0.08); color: var(--text); }
.jb-tbtn.active { background: rgba(234,89,0,0.15); border-color: var(--brand); color: var(--brand); }
.jb-tbtn-danger { border-color: rgba(239,68,68,0.3); color: #ef4444; }
.jb-tbtn-danger:hover { background: rgba(239,68,68,0.1); }

/* Body */
.jb-body { display: flex; flex: 1; overflow: hidden; }

/* Toolbox */
.jb-toolbox {
    width: 158px; flex-shrink: 0;
    background: var(--bg-sidebar); border-right: 1px solid var(--border);
    padding: 8px 7px; overflow-y: auto;
    display: flex; flex-direction: column; gap: 3px;
}
.jb-ts-hdr {
    font-size: 0.58rem; text-transform: uppercase; letter-spacing: 0.1em;
    color: var(--text-muted); padding: 7px 4px 2px; margin-top: 3px;
}
.jb-ts-hdr:first-child { margin-top: 0; }
.jb-tool {
    display: flex; align-items: center; gap: 9px; padding: 7px 8px;
    border-radius: 6px; cursor: pointer; border: 1px solid transparent;
    transition: background 0.15s, border-color 0.15s; color: var(--text-sec); font-size: 0.73rem;
}
.jb-tool:hover  { background: rgba(255,255,255,0.05); color: var(--text); }
.jb-tool.active { background: rgba(234,89,0,0.12); border-color: var(--brand); color: var(--brand); }

/* Tool icon previews */
.jbt-road     { width: 30px; height: 18px; background: #263244; border: 1px solid #374151; border-radius: 2px; flex-shrink: 0; }
.jbt-stopline { width: 30px; height: 6px; background: #f1f5f9; border-radius: 1px; flex-shrink: 0; }
.jbt-signal   { display: flex; flex-direction: column; align-items: center; gap: 2px; background: #111418; border: 1px solid #2d3748; border-radius: 3px; padding: 3px 6px; flex-shrink: 0; }
.jbt-ped      { display: flex; flex-direction: column; align-items: center; gap: 2px; background: #111418; border: 1px solid #2d3748; border-radius: 3px; padding: 3px 6px; flex-shrink: 0; }
.jbt-lamp     { width: 8px; height: 8px; border-radius: 50%; }
.jbt-lamp.r   { background: #ef4444; }
.jbt-lamp.a   { background: #f59e0b; }
.jbt-lamp.g   { background: #10b981; }
.jbt-det      { width: 30px; height: 18px; border: 1.5px dashed #38bdf8; border-radius: 2px; flex-shrink: 0; opacity: 0.65; }
.jbt-arrow    { width: 30px; height: 18px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.jbt-label    { width: 30px; height: 18px; display: flex; align-items: center; justify-content: center; font-size: 1rem; font-weight: 700; color: var(--text); flex-shrink: 0; }

.jb-tool-hint {
    margin-top: 8px; padding: 8px; border-radius: 6px;
    background: rgba(255,255,255,0.03); font-size: 0.62rem;
    color: var(--text-muted); line-height: 1.7;
}
.jb-tool-hint i { color: var(--brand); margin-right: 3px; }
kbd {
    display: inline-block; padding: 0 4px; border: 1px solid var(--border);
    border-radius: 3px; font-size: 0.6rem; font-family: var(--mono);
    background: rgba(255,255,255,0.06); color: var(--text-sec);
}

/* Canvas */
.jb-canvas-wrap { flex: 1; position: relative; overflow: hidden; background: #080d16; }
.jb-canvas      { width: 100%; height: 100%; display: block; cursor: default; }
.jb-canvas.placing { cursor: crosshair; }

.jb-live-pill {
    position: absolute; top: 10px; right: 10px;
    display: flex; align-items: center; gap: 5px;
    background: rgba(15,23,42,0.85); border: 1px solid var(--border);
    border-radius: 20px; padding: 4px 10px; font-size: 0.65rem; color: var(--text-sec);
    backdrop-filter: blur(4px);
}
.jb-empty-hint {
    position: absolute; inset: 0; display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 12px;
    color: var(--text-muted); pointer-events: none; text-align: center;
}
.jb-empty-hint i { opacity: 0.25; }
.jb-empty-hint p { opacity: 0.45; max-width: 260px; line-height: 1.5; font-size: 0.8rem; }

/* Properties panel */
.jb-props {
    width: 208px; flex-shrink: 0;
    background: var(--bg-sidebar); border-left: 1px solid var(--border);
    display: flex; flex-direction: column;
}
.jb-props-hdr {
    padding: 10px 14px; font-size: 0.68rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--text-muted); border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.jb-props-body {
    flex: 1; overflow-y: auto; padding: 10px 12px;
    display: flex; flex-direction: column; gap: 5px;
}
.jb-no-sel {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 10px; color: var(--text-muted); opacity: 0.4; font-size: 0.73rem;
    text-align: center; height: 100%;
}
.jp-row   { display: flex; align-items: flex-start; gap: 6px; min-height: 26px; }
.jp-lbl   { font-size: 0.66rem; color: var(--text-muted); padding-top: 5px; min-width: 52px; flex-shrink: 0; }
.jp-val   { font-size: 0.73rem; color: var(--text); padding-top: 3px; }
.jp-type  { text-transform: capitalize; color: var(--brand); font-weight: 600; }
.jp-input {
    flex: 1; background: rgba(255,255,255,0.05); border: 1px solid var(--border);
    border-radius: 5px; color: var(--text); font-size: 0.72rem; padding: 4px 7px; outline: none;
}
.jp-input:focus { border-color: var(--brand); }
.jp-select {
    flex: 1; background: #0f1927; border: 1px solid var(--border); border-radius: 5px;
    color: var(--text); font-size: 0.7rem; padding: 4px 5px; outline: none; cursor: pointer;
}
.jp-select:focus { border-color: var(--brand); }
.jp-rot-btns { display: flex; gap: 3px; flex-wrap: wrap; }
.jp-rot-btn {
    padding: 3px 6px; border: 1px solid var(--border); border-radius: 4px;
    background: rgba(255,255,255,0.04); color: var(--text-sec); font-size: 0.63rem; cursor: pointer;
}
.jp-rot-btn:hover  { background: rgba(255,255,255,0.08); color: var(--text); }
.jp-rot-btn.active { background: rgba(234,89,0,0.15); border-color: var(--brand); color: var(--brand); }
.jp-del-btn {
    margin-top: 10px; width: 100%; padding: 7px; border: 1px solid rgba(239,68,68,0.3);
    border-radius: 6px; background: rgba(239,68,68,0.06); color: #ef4444; font-size: 0.72rem;
    cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 6px;
}
.jp-del-btn:hover { background: rgba(239,68,68,0.12); }

/* SVG objects */
.jb-obj { cursor: grab; }
.jb-obj:active { cursor: grabbing; }

/* Toast */
.jb-toast {
    position: fixed; bottom: 40px; left: 50%; transform: translateX(-50%) translateY(8px);
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px;
    padding: 7px 18px; font-size: 0.78rem; color: var(--text);
    opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s; z-index: 9999;
}
.jb-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ══════════════════════════════════════════════════════════════
   CONFIG TAB
══════════════════════════════════════════════════════════════ */
#tab-settings { padding: 0; overflow: hidden; }

.cfg-wrap { display: flex; flex-direction: column; height: 100%; }

.cfg-topbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 14px; background: var(--bg-topbar);
    border-bottom: 1px solid var(--border); gap: 10px; flex-shrink: 0;
}
.cfg-topbar-left  { display: flex; align-items: center; gap: 8px; }
.cfg-topbar-right { display: flex; align-items: center; gap: 6px; }
.cfg-title        { font-size: 0.875rem; font-weight: 500; color: var(--text); }

.cfg-select {
    padding: 5px 8px; background: rgba(255,255,255,0.05);
    border: 1px solid var(--border); border-radius: 6px;
    color: var(--text); font-size: 0.75rem; outline: none; cursor: pointer;
}
.cfg-select:focus { border-color: var(--brand); }

.cfg-btn {
    display: flex; align-items: center; gap: 5px;
    padding: 5px 12px; border: 1px solid var(--border); border-radius: 6px;
    font-size: 0.75rem; cursor: pointer; transition: background 0.15s, color 0.15s;
}
.cfg-btn-sec { background: rgba(255,255,255,0.04); color: var(--text-sec); }
.cfg-btn-sec:hover { background: rgba(255,255,255,0.08); color: var(--text); }
.cfg-btn-pri { background: rgba(234,89,0,0.15); border-color: var(--brand); color: var(--brand); }
.cfg-btn-pri:hover:not(:disabled) { background: rgba(234,89,0,0.25); }
.cfg-btn-pri:disabled { opacity: 0.35; cursor: not-allowed; }

.cfg-status-bar {
    padding: 6px 14px; font-size: 0.72rem;
    border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.cfg-status-bar.ok   { color: var(--sig-green); background: rgba(0,255,127,0.05); }
.cfg-status-bar.err  { color: var(--sig-red);   background: rgba(239,68,68,0.05); }
.cfg-status-bar.info { color: var(--text-muted); background: rgba(255,255,255,0.02); }

.cfg-body { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 16px; }

.cfg-empty { display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 10px; height: 100%; color: var(--text-muted); font-size: 0.8rem; text-align: center; }

/* Info banner row */
.cfg-info-bar {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;
}
.cfg-info-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 8px; padding: 10px 14px;
}
.cfg-info-lbl  { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: 4px; }
.cfg-info-val  { font-size: 0.82rem; font-weight: 600; font-family: var(--mono); color: var(--text); word-break: break-all; }

/* Sections */
.cfg-sections { display: flex; flex-direction: column; gap: 12px; }

.cfg-section {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; overflow: hidden;
}
.cfg-sec-hdr {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 14px; background: rgba(255,255,255,0.025);
    border-bottom: 1px solid var(--border); cursor: pointer; user-select: none;
}
.cfg-sec-hdr i { color: var(--brand); font-size: 0.8rem; width: 14px; text-align: center; }
.cfg-sec-hdr-title { font-size: 0.8rem; font-weight: 600; color: var(--text); flex: 1; }
.cfg-sec-chevron { color: var(--text-muted); font-size: 0.72rem; transition: transform 0.2s; }
.cfg-sec-hdr.collapsed .cfg-sec-chevron { transform: rotate(-90deg); }

.cfg-fields {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 10px; padding: 14px;
}
.cfg-field { display: flex; flex-direction: column; gap: 4px; }
.cfg-field-lbl { font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }
.cfg-field input[type="text"],
.cfg-field input[type="number"],
.cfg-field select {
    padding: 6px 9px; background: rgba(255,255,255,0.05);
    border: 1px solid var(--border); border-radius: 6px;
    color: var(--text); font-size: 0.78rem; font-family: var(--mono); outline: none;
    transition: border-color 0.15s;
}
.cfg-field input:focus, .cfg-field select:focus { border-color: var(--brand); }
.cfg-field input[readonly] { opacity: 0.5; cursor: default; }
.cfg-field input.cfg-dirty { border-color: rgba(234,89,0,0.6); }
.cfg-field-chk { display: flex; align-items: center; gap: 7px; padding: 6px 0; }
.cfg-field-chk input[type="checkbox"] { width: 14px; height: 14px; accent-color: var(--brand); cursor: pointer; }
.cfg-field-chk label { font-size: 0.78rem; color: var(--text-sec); cursor: pointer; }

/* History list */
.cfg-history { display: flex; flex-direction: column; gap: 0; }
.cfg-hist-row {
    display: grid; grid-template-columns: 140px 1fr;
    gap: 10px; padding: 8px 14px; font-size: 0.75rem;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}
.cfg-hist-row:last-child { border-bottom: none; }
.cfg-hist-date { color: var(--text-muted); font-family: var(--mono); font-size: 0.7rem; }
.cfg-hist-msg  { color: var(--text-sec); }

/* Config tree (read-only) */
.cfg-tree { display: flex; flex-direction: column; gap: 6px; }

.cfg-tree-group { border: 1px solid rgba(255,255,255,0.07); border-radius: 7px; overflow: hidden; }

.cfg-tree-hdr {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 12px; cursor: pointer; user-select: none;
    background: rgba(255,255,255,0.03); transition: background 0.15s;
}
.cfg-tree-hdr:hover { background: rgba(255,255,255,0.07); }
.cfg-tree-chev { color: var(--brand); font-size: 0.62rem; transition: transform 0.18s; flex-shrink: 0; }
.cfg-tree-hdr.collapsed .cfg-tree-chev { transform: rotate(-90deg); }
.cfg-tree-hdr .cfg-tree-key { font-size: 0.8rem; font-weight: 600; color: var(--text); flex: 1; font-family: var(--mono); }
.cfg-tree-count { font-size: 0.67rem; color: var(--text-muted); font-family: var(--mono); background: rgba(255,255,255,0.06); padding: 1px 6px; border-radius: 10px; }

/* Nested group body */
.cfg-tree-body { padding: 6px 8px 8px 22px; display: flex; flex-direction: column; gap: 5px; border-top: 1px solid rgba(255,255,255,0.05); }

/* Primitive leaf row (inside nested groups) */
.cfg-tree-row { display: flex; align-items: baseline; gap: 10px; padding: 3px 6px; border-radius: 4px; font-size: 0.77rem; }
.cfg-tree-row:hover { background: rgba(255,255,255,0.03); }
.cfg-tree-row .cfg-tree-key { color: var(--text-muted); font-family: var(--mono); min-width: 160px; flex-shrink: 0; }

/* Flat-object grid */
.cfg-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid rgba(255,255,255,0.05); }
.cfg-grid-row {
    display: flex; align-items: center; gap: 8px;
    padding: 5px 12px; font-size: 0.77rem;
    border-bottom: 1px solid rgba(255,255,255,0.03);
}
.cfg-grid-row:hover { background: rgba(255,255,255,0.03); }
.cfg-grid-key { color: var(--text-muted); font-family: var(--mono); min-width: 130px; flex-shrink: 0; font-size: 0.72rem; }

/* Table for arrays of flat objects */
.cfg-table-wrap { overflow-x: auto; border-top: 1px solid rgba(255,255,255,0.05); }
.cfg-tbl { width: 100%; border-collapse: collapse; font-size: 0.75rem; font-family: var(--mono); }
.cfg-tbl thead th {
    padding: 6px 10px; text-align: left;
    color: var(--text-muted); font-weight: 500; font-size: 0.68rem;
    text-transform: uppercase; letter-spacing: 0.04em;
    background: rgba(255,255,255,0.02);
    border-bottom: 1px solid rgba(255,255,255,0.07);
}
.cfg-tbl tbody tr { border-bottom: 1px solid rgba(255,255,255,0.03); }
.cfg-tbl tbody tr:hover { background: rgba(255,255,255,0.03); }
.cfg-tbl tbody td { padding: 5px 10px; color: var(--text-sec); vertical-align: middle; }

/* Value type colours */
.cfg-v-str  { color: #a5f3a0; font-family: var(--mono); word-break: break-all; }
.cfg-v-num  { color: #7dd3fc; font-family: var(--mono); }
.cfg-v-null { color: var(--text-muted); font-style: italic; }

/* Boolean badges */
.cfg-badge { display: inline-block; padding: 1px 7px; border-radius: 10px; font-size: 0.67rem; font-weight: 600; font-family: var(--mono); letter-spacing: 0.03em; }
.cfg-badge-on  { background: rgba(16,185,129,0.15); color: #34d399; border: 1px solid rgba(16,185,129,0.3); }
.cfg-badge-off { background: rgba(100,116,139,0.12); color: #64748b; border: 1px solid rgba(100,116,139,0.2); }

.cfg-search-wrap { position: relative; display: flex; align-items: center; }
.cfg-search-icon { position: absolute; left: 8px; color: var(--text-muted); font-size: 0.72rem; pointer-events: none; }
.cfg-search {
    background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px; color: var(--text); font-size: 0.8rem;
    padding: 5px 10px 5px 26px; width: 200px; outline: none;
    transition: border-color 0.15s, width 0.2s;
}
.cfg-search:focus { border-color: var(--brand); width: 260px; }
.cfg-search::placeholder { color: var(--text-muted); }

/* Section divider label above card grids */
.cfg-section-label {
    font-size: 0.65rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.1em; color: var(--text-muted);
    padding: 4px 0 8px 2px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    margin-bottom: 10px;
}

/* Card row — cards share the full width equally */
.cfg-card-row {
    display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 4px;
}
.cfg-card-row .cfg-prop-card {
    flex: 1 1 300px;
}

/* Properties card grid (legacy, kept for fallback) */
.cfg-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 10px;
}
.cfg-prop-card {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.07);
    border-left: 3px solid var(--brand);
    border-radius: 7px; overflow: hidden;
}
.cfg-prop-card-hdr {
    padding: 8px 12px;
    font-size: 0.68rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--text);
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid rgba(255,255,255,0.07);
}
.cfg-prop-card-rows { display: flex; flex-direction: column; }
.cfg-prop-card-row {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; padding: 4px 12px; font-size: 0.76rem;
    border-bottom: 1px solid rgba(255,255,255,0.03);
}
.cfg-prop-card-row:last-child { border-bottom: none; }
.cfg-prop-card-row:hover { background: rgba(255,255,255,0.02); }

/* Sub-section divider inside a grouped card */
.cfg-card-sub-hdr {
    padding: 4px 12px 3px;
    font-size: 0.6rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.08em; color: var(--brand);
    background: rgba(234,89,0,0.05);
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.04);
}
.cfg-prop-card .cfg-card-sub-hdr:first-of-type { border-top: none; }

.cfg-prop-key {
    color: var(--text-muted); font-size: 0.7rem;
    flex-shrink: 0; white-space: nowrap;
    min-width: 140px;
}
.cfg-prop-card-row .cfg-v-str,
.cfg-prop-card-row .cfg-v-num { text-align: right; word-break: break-word; }

.cfg-no-results {
    text-align: center; padding: 40px 20px; color: var(--text-muted);
    font-size: 0.85rem; display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.cfg-no-results i { font-size: 1.4rem; opacity: 0.4; }

/* ── Phase Conflict Matrix ────────────────────────────────── */
.cfg-conflict-wrap { margin-top: 16px; }
.cfg-conflict-table-wrap { overflow-x: auto; display: inline-block; max-width: 100%; }
.cfg-conflict-table {
    border-collapse: collapse;
    font-size: 0.78rem;
    font-family: var(--mono);
}
.cfg-conflict-table th,
.cfg-conflict-table td {
    width: 34px;
    height: 34px;
    min-width: 34px;
    text-align: center;
    vertical-align: middle;
    border: 1px solid rgba(255,255,255,0.07);
    padding: 0;
    line-height: 1;
}
.cfg-conflict-table thead th {
    background: var(--surface-2, #1e293b);
    color: var(--brand);
    font-weight: 700;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}
.cfg-conflict-table tbody th {
    background: var(--surface-2, #1e293b);
    color: var(--brand);
    font-weight: 700;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    padding: 0 10px;
    white-space: nowrap;
    text-align: left;
}
.cfg-conflict-table .conflict-corner {
    background: transparent;
    border: none;
}
.cfg-conflict-table .conflict-self {
    background: #334155;
}
.cfg-conflict-table .conflict-yes {
    background: rgba(239, 68, 68, 0.18);
    color: #f87171;
    font-weight: 700;
    font-size: 1rem;
}
.cfg-conflict-table .conflict-no {
    background: rgba(16,185,129,0.04);
}

/* ── Physical Layout ─────────────────────────────────────── */
.phy-wrap {
    margin-top: 18px;
    border: 1px solid #334155;
    border-radius: 6px;
    overflow: hidden;
}
.phy-tab-bar {
    display: flex;
    background: #1e293b;
    border-bottom: 2px solid #334155;
}
.phy-tab-btn {
    background: transparent;
    border: none;
    color: #94a3b8;
    padding: 8px 18px;
    font-size: 0.82rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color 0.15s, border-color 0.15s;
}
.phy-tab-btn:hover {
    color: #e2e8f0;
}
.phy-tab-btn.phy-tab-active {
    color: #f97316;
    border-bottom-color: #f97316;
    font-weight: 600;
}
.phy-tab-content {
    background: #0f172a;
    padding: 14px 16px;
}
.phy-panel {
    color: #94a3b8;
    font-size: 0.82rem;
}
.phy-table-wrap {
    overflow-x: auto;
}
.phy-table {
    border-collapse: collapse;
    min-width: max-content;
}
.phy-th-row-label {
    min-width: 170px;
    text-align: left;
    color: #64748b;
    font-weight: 500;
    padding: 4px 10px 4px 0;
    font-size: 0.78rem;
    white-space: nowrap;
}
.phy-th-label {
    text-align: left;
    color: #94a3b8;
    font-weight: 600;
    padding: 4px 14px 4px 0;
    font-size: 0.82rem;
    white-space: nowrap;
    border-bottom: 1px solid #1e293b;
}
.phy-th-phase {
    color: #f97316;
    text-align: center;
    font-weight: 600;
    font-size: 0.78rem;
    padding: 4px 6px;
    min-width: 28px;
    width: 28px;
    white-space: nowrap;
}
.phy-row-label {
    color: #64748b;
    text-align: left;
    font-size: 0.79rem;
    padding: 3px 12px 3px 0;
    white-space: nowrap;
    min-width: 170px;
}
.phy-cell-center {
    text-align: center;
    padding: 3px 4px;
    font-size: 0.88rem;
    min-width: 28px;
    width: 28px;
}
.phy-cell-text {
    color: #94a3b8;
}
.phy-bool-true {
    color: #f97316;
}
.phy-bool-false {
    color: #334155;
}
.phy-radio-filled {
    color: #3b82f6;
}
.phy-radio-empty {
    color: #334155;
}
.phy-table tbody tr:nth-child(even) {
    background: rgba(30, 41, 59, 0.4);
}
.phy-table tbody tr:hover {
    background: rgba(51, 65, 85, 0.5);
}
.phy-empty {
    color: #64748b; font-size: 0.82rem; padding: 24px 0;
    font-style: italic;
}
.phy-pole-block {
    margin-bottom: 16px;
    border: 1px solid #1e293b;
    border-radius: 6px;
    overflow: hidden;
}
.phy-pole-hdr {
    background: #1e293b; color: #94a3b8;
    font-size: 0.75rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.05em;
    padding: 6px 12px;
}
.phy-module-row {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 12px;
    border-top: 1px solid rgba(255,255,255,0.04);
}
.phy-module-lbl {
    font-size: 0.72rem; color: #64748b;
    min-width: 70px; flex-shrink: 0;
}
.phy-pole-cell {
    display: flex; flex-direction: column; align-items: center;
    background: rgba(255,255,255,0.03);
    border: 1px solid #1e293b;
    border-radius: 5px;
    padding: 4px 10px; min-width: 56px;
}
.phy-pole-cell-lbl {
    font-size: 0.6rem; color: #64748b;
    text-transform: uppercase; letter-spacing: 0.04em;
}
.phy-pole-cell-val {
    font-size: 0.82rem; font-weight: 600; color: #f97316;
    font-family: var(--mono);
}

/* ── Controller Selector (top bar) ───────────────────────────── */
.ctrl-selector {
    display: flex; align-items: center; gap: 6px;
}
.ctrl-dropdown {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-solid);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--mono);
    font-size: 0.72rem;
    padding: 4px 8px;
    max-width: 280px;
    cursor: pointer;
    outline: none;
}
.ctrl-dropdown:focus { border-color: var(--brand); }
.ctrl-dropdown option { background: #1e293b; color: var(--text); }

.ctrl-connect-btn {
    display: flex; align-items: center; gap: 5px;
    background: var(--brand);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 5px 10px;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s;
}
.ctrl-connect-btn:hover { background: var(--brand-hover); }
.ctrl-connect-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.ctrl-disconnect-btn {
    display: flex; align-items: center; justify-content: center;
    background: rgba(239,68,68,0.12);
    border: 1px solid rgba(239,68,68,0.3);
    border-radius: var(--radius-sm);
    color: var(--danger);
    width: 30px; height: 30px;
    cursor: pointer;
    font-size: 0.78rem;
    transition: all 0.2s;
}
.ctrl-disconnect-btn:hover { background: rgba(239,68,68,0.25); border-color: var(--danger); }
.ctrl-disconnect-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.ctrl-ping-all-btn {
    display: flex; align-items: center; gap: 6px;
    background: rgba(56,189,248,0.1);
    border: 1px solid rgba(56,189,248,0.3);
    border-radius: var(--radius-sm);
    color: #38bdf8; font-size: 0.78rem; font-weight: 700;
    padding: 6px 14px; cursor: pointer;
    transition: all 0.2s;
}
.ctrl-ping-all-btn:hover { background: rgba(56,189,248,0.2); }
.ctrl-ping-all-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Ping status cells ───────────────────────────────────────── */
.ping-cell { display: flex; align-items: center; gap: 6px; }
.ping-dot {
    width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0;
}
.ping-dot.online   { background: var(--sig-green); box-shadow: 0 0 6px rgba(16,185,129,0.6); }
.ping-dot.offline  { background: var(--sig-red); }
.ping-dot.unknown  { background: var(--text-muted); }
.ping-dot.checking { display: flex; align-items: center; color: #38bdf8; }
.ping-ms { font-family: var(--mono); font-size: 0.72rem; color: var(--text-sec); }
.ping-ms.offline { color: var(--text-muted); }

.ctrl-map-link {
    display: inline-flex; align-items: center;
    color: var(--text-muted); font-size: 0.72rem;
    margin-left: 5px; text-decoration: none;
    transition: color 0.15s;
}
.ctrl-map-link:not(.disabled):hover { color: #34d399; }
.ctrl-map-link.disabled { opacity: 0.25; cursor: default; }

/* ── Controllers Panel (settings tab) ────────────────────────── */
.ctrl-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
    margin-bottom: 14px;
}
.ctrl-panel-hdr {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 14px;
}
.ctrl-panel-title {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.92rem; font-weight: 700;
}
.ctrl-add-btn {
    display: flex; align-items: center; gap: 6px;
    background: var(--brand);
    border: none; border-radius: var(--radius-sm);
    color: #fff; font-size: 0.78rem; font-weight: 700;
    padding: 6px 14px; cursor: pointer;
    transition: background 0.2s;
}
.ctrl-add-btn:hover { background: var(--brand-hover); }

.ctrl-table-wrap { overflow-x: auto; }
.ctrl-table {
    width: 100%; border-collapse: collapse;
    font-size: 0.82rem;
}
.ctrl-table th {
    text-align: left; padding: 6px 10px;
    font-size: 0.68rem; font-weight: 600; text-transform: uppercase;
    color: var(--text-muted); border-bottom: 1px solid var(--border);
}
.ctrl-table td {
    padding: 8px 10px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    vertical-align: middle;
}
.ctrl-table tbody tr:hover { background: rgba(255,255,255,0.03); }
.ctrl-row-active td { background: rgba(234,89,0,0.06); }

.ctrl-ip-badge {
    font-family: var(--mono); font-size: 0.78rem;
    background: rgba(255,255,255,0.06);
    padding: 2px 7px; border-radius: 4px;
}
.ctrl-status { display: flex; align-items: center; gap: 5px; font-size: 0.75rem; font-weight: 600; }
.ctrl-status.active { color: var(--sig-green); }
.ctrl-status.idle   { color: var(--text-muted); }

.ctrl-actions-cell { display: flex; align-items: center; gap: 5px; }
.ctrl-act-btn {
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    border-radius: 5px;
    color: var(--text-sec);
    width: 28px; height: 28px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; font-size: 0.72rem;
    transition: all 0.15s;
}
.ctrl-act-btn:hover { background: rgba(255,255,255,0.12); color: var(--text); }
.ctrl-act-connect:hover { border-color: var(--brand); color: var(--brand); }
.ctrl-act-del:hover     { border-color: var(--danger); color: var(--danger); }

/* ── Controller Modal ────────────────────────────────────────── */
.ctrl-modal-overlay {
    position: fixed; inset: 0; z-index: 8888;
    background: rgba(0,0,0,0.65);
    display: flex; align-items: center; justify-content: center;
    backdrop-filter: blur(4px);
}
.ctrl-modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border-solid);
    border-radius: var(--radius);
    width: 560px; max-width: 95vw;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.ctrl-modal-hdr {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 20px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem; font-weight: 700;
}
.ctrl-modal-close {
    background: none; border: none; color: var(--text-muted);
    font-size: 1rem; cursor: pointer;
    width: 28px; height: 28px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    transition: all 0.15s;
}
.ctrl-modal-close:hover { color: var(--text); background: rgba(255,255,255,0.08); }

.ctrl-modal-form { padding: 18px 20px 20px; }
.cm-row { display: flex; gap: 12px; margin-bottom: 12px; }
.cm-field { display: flex; flex-direction: column; gap: 5px; flex: 1; }
.cm-field-sm { flex: 0 0 110px; }
.cm-field label { font-size: 0.7rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; }
.cm-field input {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-solid);
    border-radius: var(--radius-sm);
    color: var(--text); font-size: 0.85rem;
    padding: 7px 10px; outline: none;
    transition: border-color 0.15s;
}
.cm-field input:focus { border-color: var(--brand); }
.cm-actions {
    display: flex; justify-content: flex-end; gap: 8px;
    margin-top: 16px; padding-top: 14px;
    border-top: 1px solid var(--border);
}
.cm-btn {
    padding: 7px 20px; border-radius: var(--radius-sm);
    font-size: 0.82rem; font-weight: 700;
    cursor: pointer; border: 1px solid transparent;
    transition: all 0.15s;
}
.cm-btn-sec {
    background: rgba(255,255,255,0.06);
    border-color: var(--border-solid);
    color: var(--text-sec);
}
.cm-btn-sec:hover { background: rgba(255,255,255,0.1); color: var(--text); }
.cm-btn-pri {
    background: var(--brand); color: #fff;
}
.cm-btn-pri:hover { background: var(--brand-hover); }

/* ── Cameras Tab ─────────────────────────────────────────── */
.cam-wrap { padding: 16px; display: flex; flex-direction: column; gap: 16px; }
.cam-header {
    display: flex; align-items: center; gap: 10px;
    padding-bottom: 12px; border-bottom: 1px solid var(--border);
}
.cam-header h2 { font-size: 1rem; font-weight: 600; color: var(--text); margin: 0; flex: 1; }
.cam-controls { margin-left: auto; }
.cam-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 480px));
    gap: 16px;
}
.cam-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-width: 480px;
}
.cam-card-hdr {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,0.02);
}
.cam-label { font-size: 0.8rem; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 8px; }
.cam-dev { font-size: 0.7rem; color: var(--text-muted); font-family: monospace; }
.cam-dot { font-size: 0.5rem; color: var(--text-muted); transition: color 0.3s; }
.cam-dot.live { color: var(--sig-green); }
.cam-dot.error { color: var(--sig-red); }
.cam-toggle-btn {
    background: rgba(255,255,255,0.06); border: 1px solid var(--border-solid);
    color: var(--text-sec); border-radius: 6px; padding: 4px 10px;
    font-size: 0.75rem; cursor: pointer; transition: background 0.15s;
}
.cam-toggle-btn:hover { background: rgba(255,255,255,0.12); color: var(--text); }
.cam-feed-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: #050a14;
    overflow: hidden;
}
.cam-feed {
    width: 100%; height: 100%;
    object-fit: contain;
    display: block;
}
.cam-overlay {
    position: absolute; inset: 0;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 10px; color: var(--text-muted);
    background: #050a14;
    font-size: 0.85rem;
    transition: opacity 0.3s;
    pointer-events: none;
}
.cam-overlay.hidden { opacity: 0; }

/* ══════════════════════════════════════════════════════════════
   RESPONSIVE — Mobile & Tablet Breakpoints
══════════════════════════════════════════════════════════════ */

/* Hamburger — hidden on desktop, shown via media queries below */
.hamburger-btn {
    display: none;
    align-items: center; justify-content: center;
    width: 34px; height: 34px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-sec);
    cursor: pointer;
    font-size: 1rem;
    flex-shrink: 0;
    transition: background 0.15s, color 0.15s;
}
.hamburger-btn:hover { background: rgba(255,255,255,0.1); color: var(--text); }

/* Sidebar backdrop (mobile overlay) */
.sidebar-overlay {
    display: none;
    position: fixed; inset: 0; z-index: 199;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(2px);
}
.sidebar-overlay.visible { display: block; }

/* ── Tablet landscape / small desktop (≤1100px) ────────────── */
@media (max-width: 1100px) {

    /* Sidebar becomes a fixed overlay — slides in from left */
    .sidebar {
        position: fixed;
        left: 0; top: 0; bottom: 0;
        z-index: 200;
        width: 180px;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
    }
    .sidebar.open {
        transform: translateX(0);
        box-shadow: 6px 0 30px rgba(0,0,0,0.6);
    }

    /* Main content fills full width (sidebar is out of flow) */
    .main-layout { width: 100%; }

    /* Show hamburger */
    .hamburger-btn { display: flex; }

    /* Top bar: tighten padding */
    .top-bar { padding: 0 12px; gap: 10px; }

    /* Hide secondary data-rate columns to save space */
    .top-stat-col  { display: none; }
    .top-stat-divider { display: none; }

    /* Dashboard: 3 columns */
    .dash-grid { grid-template-columns: repeat(3, 1fr); }

    .c-hw           { grid-column: 1;     grid-row: 1; }
    .c-traffic-card { grid-column: 2;     grid-row: 1; }
    .c-logic        { grid-column: 3;     grid-row: 1; }
    .c-utc          { grid-column: 1 / 3; grid-row: 2; }
    .c-alerts       { grid-column: 3;     grid-row: 2; }
    .c-srvinfo      { grid-column: 1 / 4; grid-row: 3; }
    .c-utcbits      { grid-column: 1 / 4; grid-row: 4; }
    .c-timings      { grid-column: 1 / 4; grid-row: 5; }
    .c-phases       { grid-column: 1 / 4; grid-row: 6; }
    .c-sensors      { grid-column: 1 / 4; grid-row: 7; }

    /* Phase / sensor grids: halve the columns */
    .phases-grid  { grid-template-columns: repeat(16, 1fr); }
    .sensors-grid { grid-template-columns: repeat(16, 1fr); }

    /* Server info row: stack vertically */
    .srvinfo-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
    .srvinfo-title-group { min-width: unset; }
    .srvinfo-stats { flex-wrap: wrap; width: 100%; }

    /* Junction builder: narrow panels */
    .jb-toolbox { width: 120px; }
    .jb-props   { width: 160px; }

    /* Log toolbar: allow wrapping */
    .log-toolbar { flex-wrap: wrap; }
    .log-tl-right { flex-wrap: wrap; }
}

/* ── Tablet portrait / large phone (≤768px) ───────────────── */
@media (max-width: 768px) {

    /* Hide top-center title and remaining stat group */
    .top-center     { display: none; }
    .top-stat-group { display: none; }
    .top-bar { grid-template-columns: auto 1fr; }
    .top-right { justify-self: end; }

    /* Dashboard: 2 columns */
    .dash-grid { grid-template-columns: repeat(2, 1fr); }

    .c-srvinfo { display: none; }

    .c-hw           { grid-column: 1;     grid-row: 1; }
    .c-traffic-card { grid-column: 2;     grid-row: 1; }
    .c-logic        { grid-column: 1;     grid-row: 2; }
    .c-utc          { grid-column: 2;     grid-row: 2; }
    .c-alerts       { grid-column: 1 / 3; grid-row: 3; }
    .c-utcbits      { grid-column: 1 / 3; grid-row: 4; }
    .c-timings      { grid-column: 1 / 3; grid-row: 5; }
    .c-phases       { grid-column: 1 / 3; grid-row: 6; }
    .c-sensors      { grid-column: 1 / 3; grid-row: 7; }

    /* Phase / sensor grids */
    .phases-grid  { grid-template-columns: repeat(8, 1fr); }
    .sensors-grid { grid-template-columns: repeat(8, 1fr); }

    /* Timings layout: stack */
    .timings-layout { flex-direction: column; }
    .timings-table  { flex: none; width: 100%; }

    /* Log toolbar */
    .log-search { width: 100%; }
    .log-tl-left, .log-tl-right { flex-wrap: wrap; width: 100%; }

    /* Junction builder: collapse side panels */
    .jb-toolbox { display: none; }
    .jb-props   { display: none; }

    /* Status bar */
    .status-bar { height: auto; flex-direction: column; align-items: flex-start; padding: 6px 12px; gap: 3px; }

    /* Controller table */
    .ctrl-table-wrap { overflow-x: auto; }

    /* Config top bar */
    .cfg-topbar { flex-wrap: wrap; }
    .cfg-topbar-right { flex-wrap: wrap; }

    /* Top bar: single tight row */
    .top-bar { height: auto; min-height: 52px; padding: 6px 10px; }
    .top-left { gap: 8px; flex-wrap: nowrap; min-width: 0; }

    /* Hide connect/disconnect buttons — use Settings tab on mobile */
    .ctrl-connect-btn,
    .ctrl-disconnect-btn { display: none; }

    /* Compact controller dropdown */
    .ctrl-dropdown { max-width: 160px; font-size: 0.68rem; padding: 3px 6px; }

    /* Compact connected badge */
    .conn-badge { font-size: 0.62rem; padding: 2px 7px; }

    /* Clock: tighten */
    .clock-time { font-size: 1.1rem; }
    .clock-block { text-align: right; }
    .top-icon-btn { display: none; }
}

/* ── Small phone (≤480px) ─────────────────────────────────── */
@media (max-width: 480px) {

    .content-view { padding: 8px; }

    /* Single-column dashboard */
    .dash-grid { grid-template-columns: 1fr; }

    /* Hide cards that are too heavy/complex for a phone screen */
    .c-utc,
    .c-srvinfo,
    .c-utcbits,
    .c-timings { display: none; }

    /* Remaining cards stack in order */
    .c-hw, .c-traffic-card, .c-logic, .c-alerts, .c-phases, .c-sensors {
        grid-column: 1;
        grid-row: auto;
    }

    /* ── Phase Status: 8 columns + compact signal heads ─────── */
    .phases-grid { grid-template-columns: repeat(8, 1fr); gap: 3px; }

    .sig-housing { padding: 4px 2px; gap: 3px; }
    .sig-lamp    { width: 9px; height: 9px; }
    .phase-lbl   { font-size: 0.5rem; }

    /* Phase card summary row: allow wrapping */
    .phase-summary-row { flex-wrap: wrap; gap: 5px; }
    .phase-donut-canvas { width: 28px !important; height: 28px !important; }

    /* ── Sensor Matrix: 8 columns + compact cells ────────────── */
    .sensors-grid { grid-template-columns: repeat(8, 1fr); gap: 2px; }

    .sensor-cell {
        min-height: 20px;
        font-size: 0.5rem;
        padding: 3px 1px;
    }

    /* Clock: drop date line */
    .clock-date { display: none; }
    .clock-time { font-size: 1rem; }

    /* Log analytics */
    .log-stat-row   { flex-wrap: wrap; }
    .log-charts-row { flex-direction: column; }

    /* Modal: full width */
    .ctrl-modal-card { width: 100%; max-width: 100vw; border-radius: 0; }
    .cm-row { flex-direction: column; }

    /* Controller dropdown */
    .ctrl-dropdown { max-width: 140px; }
}