/* ===========================================================================
   SYZE ENVIRO — CEMS platform design system
   ---------------------------------------------------------------------------
   One file, two themes. Every colour is a token; nothing downstream hardcodes
   a hex. Dark is the default because these screens live in control rooms and
   on wall displays, where a light background is fatiguing and washes out on a
   projector.

   The categorical series and status colours are a validated palette: both
   modes pass colourblind separation, the normal-vision floor, and 3:1
   contrast against their own surface. Status colours are reserved — they
   never double as a chart series — and are always paired with a word or icon
   so meaning never rests on colour alone.
   =========================================================================== */

:root {
    /* ---- Surfaces (dark, default) ---- */
    --bg:            #0e1116;   /* app background, behind everything */
    --surface-1:     #161b22;   /* cards, panels */
    --surface-2:     #1c232c;   /* raised: hovered rows, popovers, inputs */
    --surface-3:     #232c37;   /* highest: active nav, selected chips */
    --sidebar:       #0b0e13;

    /* ---- Ink ---- */
    --text-1:        #e9eef5;   /* primary */
    --text-2:        #a8b3c1;   /* secondary */
    --text-3:        #6e7c8c;   /* muted: axis labels, captions */

    /* ---- Lines ---- */
    --border:        #232c37;
    --border-strong: #313d4c;
    --grid:          #1e2630;   /* chart gridlines */

    /* ---- Brand ---- */
    --brand:         #29a3dc;   /* SYZE cyan, from the logo */
    --brand-deep:    #14304a;
    --brand-ink:     #7fd0f5;

    /* ---- Categorical series: fixed order, never cycled ---- */
    --s1: #3987e5;  --s2: #d95926;  --s3: #199e70;  --s4: #c98500;
    --s5: #d55181;  --s6: #008300;  --s7: #9085e9;  --s8: #e66767;

    /* ---- Status: reserved, always with a label ---- */
    --ok:       #0ca30c;
    --warn:     #fab219;
    --major:    #ec835a;
    --critical: #d03b3b;
    --idle:     #6e7c8c;

    --ok-bg:       rgba(12,163,12,.14);
    --warn-bg:     rgba(250,178,25,.14);
    --major-bg:    rgba(236,131,90,.14);
    --critical-bg: rgba(208,59,59,.16);
    --idle-bg:     rgba(110,124,140,.14);

    --radius:    12px;
    --radius-sm: 8px;
    --radius-xs: 5px;

    --shadow-1: 0 1px 2px rgba(0,0,0,.35);
    --shadow-2: 0 4px 16px rgba(0,0,0,.4);
    --shadow-3: 0 12px 40px rgba(0,0,0,.5);

    --sidebar-w: 248px;
    --topbar-h:  60px;

    --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

    color-scheme: dark;
}

/* ---- Light theme: a selected set of steps, not an inversion ---- */
:root[data-theme="light"] {
    --bg:            #f4f6f9;
    --surface-1:     #ffffff;
    --surface-2:     #f7f9fb;
    --surface-3:     #eef2f7;
    --sidebar:       #10161f;   /* sidebar stays dark in both themes */

    --text-1:        #10161f;
    --text-2:        #4a5666;
    --text-3:        #78859a;

    --border:        #e2e8f0;
    --border-strong: #cbd5e1;
    --grid:          #edf1f6;

    --brand:         #1789bd;
    --brand-deep:    #e3f3fb;
    --brand-ink:     #0d5f85;

    --s1: #2a78d6;  --s2: #eb6834;  --s3: #1baf7a;  --s4: #eda100;
    --s5: #e87ba4;  --s6: #008300;  --s7: #4a3aa7;  --s8: #e34948;

    --shadow-1: 0 1px 2px rgba(16,22,31,.06);
    --shadow-2: 0 4px 14px rgba(16,22,31,.08);
    --shadow-3: 0 12px 32px rgba(16,22,31,.12);

    color-scheme: light;
}

/* =========================================================================
   Base
   ========================================================================= */

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

html, body { height: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text-1);
    font-family: var(--font);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-ink); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4, h5 { margin: 0; font-weight: 600; letter-spacing: -.011em; }
h1 { font-size: 20px; }
h2 { font-size: 17px; }
h3 { font-size: 15px; }

code, pre, .mono { font-family: var(--mono); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* =========================================================================
   Layout shell
   ========================================================================= */

.app { display: flex; min-height: 100vh; }

.sidebar {
    width: var(--sidebar-w);
    flex: 0 0 var(--sidebar-w);
    background: var(--sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 40;
}

.sidebar-brand {
    padding: 18px 18px 14px;
    border-bottom: 1px solid rgba(255,255,255,.06);
}
.sidebar-brand img { width: 100%; max-width: 168px; display: block; }
.sidebar-brand .site {
    margin-top: 12px;
    font-size: 13px;
    font-weight: 600;
    color: #e9eef5;
    line-height: 1.3;
}
.sidebar-brand .meta { font-size: 11px; color: #6e7c8c; margin-top: 2px; }

.nav { padding: 10px 10px 20px; flex: 1; overflow-y: auto; }
.nav-section {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: .09em;
    text-transform: uppercase;
    color: #5a6675;
    padding: 16px 10px 6px;
}
.nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 11px;
    border-radius: var(--radius-sm);
    color: #a8b3c1;
    font-size: 13.5px;
    font-weight: 500;
    margin-bottom: 2px;
    transition: background .12s, color .12s;
}
.nav a:hover { background: rgba(255,255,255,.05); color: #e9eef5; text-decoration: none; }
.nav a.active {
    background: var(--brand-deep);
    color: #cdeaf9;
    box-shadow: inset 2px 0 0 var(--brand);
}
.nav a .ico { width: 17px; height: 17px; flex: 0 0 17px; opacity: .85; }
.nav a .badge-count {
    margin-left: auto;
    background: var(--critical);
    color: #fff;
    font-size: 10.5px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: 999px;
}

.sidebar-foot {
    padding: 12px 14px;
    border-top: 1px solid rgba(255,255,255,.06);
    font-size: 12px;
    color: #6e7c8c;
}
.sidebar-foot .who { color: #d3dbe4; font-weight: 600; word-break: break-all; margin-bottom: 4px; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
    height: var(--topbar-h);
    background: var(--surface-1);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 22px;
    position: sticky;
    top: 0;
    z-index: 30;
}
.topbar h1 { font-size: 16px; }
.topbar .crumb { font-size: 12px; color: var(--text-3); margin-top: 1px; }
.topbar .spacer { margin-left: auto; }

.content { padding: 22px; flex: 1; }

@media (max-width: 980px) {
    .app { flex-direction: column; }
    .sidebar { width: 100%; flex: none; height: auto; position: static; }
    .nav { display: flex; flex-wrap: wrap; gap: 4px; padding: 8px; }
    .nav-section, .sidebar-foot { display: none; }
    .content { padding: 14px; }
}

/* =========================================================================
   Cards
   ========================================================================= */

.card {
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-1);
}
.card-head {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 13px 16px;
    border-bottom: 1px solid var(--border);
}
.card-head h2, .card-head h3 { font-size: 13.5px; }
.card-body { padding: 16px; }
.card-tight .card-body { padding: 12px; }

.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .07em;
    text-transform: uppercase;
    color: var(--text-3);
}

/* =========================================================================
   Grid
   ========================================================================= */

.grid { display: grid; gap: 14px; }
.g-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.g-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.g-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.g-auto { grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }
@media (max-width: 1200px) { .g-4 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 820px)  { .g-2, .g-3, .g-4 { grid-template-columns: 1fr; } }

/* =========================================================================
   KPI tiles
   ========================================================================= */

.kpi {
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 15px 17px;
    position: relative;
    overflow: hidden;
}
.kpi::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--idle);
}
.kpi.is-ok::before       { background: var(--ok); }
.kpi.is-warn::before     { background: var(--warn); }
.kpi.is-critical::before { background: var(--critical); }
.kpi.is-brand::before    { background: var(--brand); }

.kpi .label { font-size: 11.5px; color: var(--text-2); font-weight: 500; }
.kpi .value {
    font-size: 29px;
    font-weight: 650;
    line-height: 1.1;
    margin-top: 5px;
    letter-spacing: -.02em;
}
.kpi .sub { font-size: 11.5px; color: var(--text-3); margin-top: 3px; }

/* =========================================================================
   Parameter card with radial gauge
   ========================================================================= */

.param-card {
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    text-align: center;
    transition: border-color .15s, transform .15s;
}
.param-card:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.param-card.breach { border-color: var(--critical); background: linear-gradient(180deg, var(--critical-bg), transparent 60%); }
.param-card.stale  { opacity: .55; }

.param-card .pname {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--text-2);
}
.gauge { width: 100%; max-width: 132px; margin: 6px auto 2px; display: block; }
.gauge .track { stroke: var(--grid); }
.gauge .fill  { transition: stroke-dashoffset .6s cubic-bezier(.22,1,.36,1), stroke .3s; }
.gauge .gval  { font-size: 21px; font-weight: 650; fill: var(--text-1); }
.gauge .gunit { font-size: 9.5px; fill: var(--text-3); }
.param-card .limit { font-size: 11px; color: var(--text-3); }

/* =========================================================================
   Pills / badges — colour is never the only signal
   ========================================================================= */

.pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    font-weight: 600;
    padding: 2.5px 9px;
    border-radius: 999px;
    border: 1px solid transparent;
    white-space: nowrap;
    line-height: 1.5;
}
.pill .dot { width: 6px; height: 6px; border-radius: 50%; flex: 0 0 6px; }

.pill-ok       { color: #4ade4a; background: var(--ok-bg);       border-color: rgba(12,163,12,.3); }
.pill-ok .dot       { background: var(--ok); }
.pill-warn     { color: #fbc94f; background: var(--warn-bg);     border-color: rgba(250,178,25,.3); }
.pill-warn .dot     { background: var(--warn); }
.pill-major    { color: #f0a183; background: var(--major-bg);    border-color: rgba(236,131,90,.3); }
.pill-major .dot    { background: var(--major); }
.pill-critical { color: #f08585; background: var(--critical-bg); border-color: rgba(208,59,59,.35); }
.pill-critical .dot { background: var(--critical); }
.pill-idle     { color: var(--text-2); background: var(--idle-bg); border-color: var(--border-strong); }
.pill-idle .dot     { background: var(--idle); }
.pill-brand    { color: var(--brand-ink); background: var(--brand-deep); border-color: rgba(41,163,220,.3); }
.pill-brand .dot    { background: var(--brand); }

:root[data-theme="light"] .pill-ok       { color: #056605; }
:root[data-theme="light"] .pill-warn     { color: #7a5600; }
:root[data-theme="light"] .pill-major    { color: #8a3f1c; }
:root[data-theme="light"] .pill-critical { color: #9c1f1f; }

/* A live pulse for "receiving data" */
.pulse { position: relative; }
.pulse::after {
    content: "";
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    border: 1.5px solid var(--ok);
    animation: pulse 2s ease-out infinite;
}
@keyframes pulse {
    0%   { transform: scale(.7); opacity: .9; }
    100% { transform: scale(1.9); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
    .pulse::after { animation: none; opacity: 0; }
    .gauge .fill { transition: none; }
}

/* =========================================================================
   Tables
   ========================================================================= */

.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th {
    text-align: left;
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--text-3);
    padding: 9px 12px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    background: var(--surface-1);
    position: sticky;
    top: 0;
    z-index: 1;
}
.tbl td { padding: 9px 12px; border-bottom: 1px solid var(--border); color: var(--text-1); }
.tbl tbody tr:hover { background: var(--surface-2); }
.tbl .num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl tr.row-critical td { background: var(--critical-bg); }
.tbl-empty { padding: 34px 16px; text-align: center; color: var(--text-3); font-size: 13px; }

/* =========================================================================
   Forms
   ========================================================================= */

.field { margin-bottom: 13px; }
.field label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-2);
    margin-bottom: 5px;
}
.field .hint { font-size: 11.5px; color: var(--text-3); margin-top: 4px; }

.input, .select, .textarea {
    width: 100%;
    background: var(--surface-2);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    color: var(--text-1);
    font-family: inherit;
    font-size: 13.5px;
    padding: 8px 11px;
    transition: border-color .12s, box-shadow .12s;
}
.input:focus, .select:focus, .textarea:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(41,163,220,.16);
}
.input::placeholder { color: var(--text-3); }
.textarea { resize: vertical; min-height: 76px; font-family: var(--mono); font-size: 12.5px; }
.select { appearance: none; padding-right: 30px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%236e7c8c' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 10px center; }

/* =========================================================================
   Buttons
   ========================================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 550;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-strong);
    background: var(--surface-2);
    color: var(--text-1);
    cursor: pointer;
    transition: background .12s, border-color .12s, opacity .12s;
    white-space: nowrap;
}
.btn:hover { background: var(--surface-3); text-decoration: none; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--brand); border-color: var(--brand); color: #04222f; font-weight: 600; }
.btn-primary:hover { background: #43b4e8; border-color: #43b4e8; }
.btn-danger { background: transparent; border-color: rgba(208,59,59,.5); color: #f08585; }
.btn-danger:hover { background: var(--critical-bg); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--surface-2); color: var(--text-1); }
.btn-sm { font-size: 12px; padding: 5px 10px; }
.btn-icon { padding: 7px; }

/* =========================================================================
   Time-range segmented control
   ========================================================================= */

.segmented {
    display: inline-flex;
    background: var(--surface-2);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    padding: 2px;
    gap: 2px;
}
.segmented button {
    font-family: inherit;
    font-size: 12px;
    font-weight: 550;
    padding: 5px 11px;
    border: 0;
    border-radius: var(--radius-xs);
    background: transparent;
    color: var(--text-2);
    cursor: pointer;
}
.segmented button:hover { color: var(--text-1); }
.segmented button.active { background: var(--brand-deep); color: var(--brand-ink); }

/* =========================================================================
   Alarms
   ========================================================================= */

.alarm {
    display: flex;
    gap: 12px;
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    align-items: flex-start;
}
.alarm:last-child { border-bottom: 0; }
.alarm.unack { background: linear-gradient(90deg, var(--critical-bg), transparent 70%); }
.alarm .sev { width: 3px; border-radius: 2px; align-self: stretch; flex: 0 0 3px; }
.alarm .sev-warn { background: var(--warn); }
.alarm .sev-critical { background: var(--critical); }
.alarm .sev-major { background: var(--major); }
.alarm .body { flex: 1; min-width: 0; }
.alarm .title { font-size: 13.5px; font-weight: 600; }
.alarm .detail { font-size: 12px; color: var(--text-2); margin-top: 2px; }
.alarm .time { font-size: 11px; color: var(--text-3); margin-top: 3px; }
.alarm .acts { display: flex; gap: 6px; align-items: center; }

/* =========================================================================
   Misc
   ========================================================================= */

.muted { color: var(--text-3); }
.small { font-size: 12px; }
.mt-1{margin-top:4px}.mt-2{margin-top:8px}.mt-3{margin-top:14px}.mt-4{margin-top:22px}
.mb-1{margin-bottom:4px}.mb-2{margin-bottom:8px}.mb-3{margin-bottom:14px}.mb-4{margin-bottom:22px}
.flex{display:flex}.items-center{align-items:center}.gap-1{gap:5px}.gap-2{gap:9px}.gap-3{gap:14px}
.ml-auto{margin-left:auto}.text-right{text-align:right}.w-full{width:100%}
.hidden{display:none !important}

.code-block {
    background: #0a0d12;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    font-family: var(--mono);
    font-size: 12.5px;
    line-height: 1.65;
    color: #c9d4e0;
    overflow-x: auto;
    max-height: 480px;
}
.code-block .k { color: #7fd0f5; }
.code-block .s { color: #9ede9e; }
.code-block .c { color: #5a6675; font-style: italic; }

.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    background:
        radial-gradient(900px 500px at 50% -12%, rgba(41,163,220,.14), transparent 62%),
        var(--bg);
    padding: 22px;
}
.login-card { width: 100%; max-width: 392px; }
.login-card .brand { text-align: center; margin-bottom: 24px; }
.login-card .brand img { width: 205px; }

.toast-host { position: fixed; right: 18px; bottom: 18px; z-index: 90; display: flex; flex-direction: column; gap: 8px; }
.toast {
    background: var(--surface-3);
    border: 1px solid var(--border-strong);
    border-left: 3px solid var(--brand);
    border-radius: var(--radius-sm);
    padding: 11px 15px;
    font-size: 13px;
    box-shadow: var(--shadow-3);
    animation: slidein .22s ease-out;
    max-width: 340px;
}
.toast.ok { border-left-color: var(--ok); }
.toast.err { border-left-color: var(--critical); }
@keyframes slidein { from { transform: translateX(16px); opacity: 0; } }

/* =========================================================================
   Tabs, tree, modal, drawer, chips — added for the full application shell
   ========================================================================= */

.tabs {
    display: flex; gap: 2px; border-bottom: 1px solid var(--border);
    margin-bottom: 18px; overflow-x: auto;
}
.tabs a, .tabs button {
    appearance: none; background: none; border: 0; cursor: pointer;
    padding: 10px 14px; font: inherit; font-size: 13px; font-weight: 500;
    color: var(--text-2); border-bottom: 2px solid transparent;
    white-space: nowrap; margin-bottom: -1px;
}
.tabs a:hover, .tabs button:hover { color: var(--text-1); text-decoration: none; }
.tabs a.active, .tabs button.active { color: var(--brand-ink); border-bottom-color: var(--brand); }

/* ---- Asset tree: industry > station > device > parameter ---- */
.tree { font-size: 13px; }
.tree-node { border-bottom: 1px solid var(--border); }
.tree-node:last-child { border-bottom: 0; }
.tree-row {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 14px; cursor: pointer;
}
.tree-row:hover { background: var(--surface-2); }
.tree-row .caret {
    width: 14px; flex: 0 0 14px; color: var(--text-3);
    transition: transform .15s ease; font-size: 10px;
}
.tree-row.open .caret { transform: rotate(90deg); }
.tree-row .tname { font-weight: 600; }
.tree-row .tmeta { font-size: 11.5px; color: var(--text-3); }
.tree-children { padding-left: 22px; border-left: 1px solid var(--border); margin-left: 20px; }
.tree-children[hidden] { display: none; }
.tree-leaf {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 14px; border-bottom: 1px solid var(--border);
}
.tree-leaf:last-child { border-bottom: 0; }

/* ---- Modal ---- */
.modal-host {
    position: fixed; inset: 0; z-index: 100; display: none;
    align-items: flex-start; justify-content: center;
    background: rgba(4,7,11,.62); padding: 6vh 16px 16px;
    backdrop-filter: blur(2px); overflow-y: auto;
}
.modal-host.open { display: flex; }
.modal {
    width: 100%; max-width: 560px; background: var(--surface-1);
    border: 1px solid var(--border-strong); border-radius: var(--radius);
    box-shadow: var(--shadow-3); animation: popin .16s ease-out;
}
.modal.wide { max-width: 880px; }
.modal-head {
    padding: 15px 18px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: 10px;
}
.modal-head h3 { font-size: 14.5px; }
.modal-body { padding: 18px; }
.modal-foot {
    padding: 13px 18px; border-top: 1px solid var(--border);
    display: flex; gap: 9px; justify-content: flex-end; background: var(--surface-2);
    border-radius: 0 0 var(--radius) var(--radius);
}
@keyframes popin { from { transform: translateY(-8px); opacity: 0; } }

/* ---- Chips / meta rows ---- */
.chip {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 3px 9px; border-radius: 999px; font-size: 11.5px;
    background: var(--surface-2); border: 1px solid var(--border);
    color: var(--text-2);
}
.chip.mono { font-family: var(--mono); font-size: 11px; }

.meta-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px,1fr)); gap: 13px; }
.meta-grid .k { font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: .05em; }
.meta-grid .v { font-size: 13.5px; margin-top: 2px; word-break: break-word; }

/* ---- Empty state ---- */
.empty { text-align: center; padding: 46px 20px; color: var(--text-3); }
.empty h3 { color: var(--text-2); font-size: 14px; margin-bottom: 5px; }
.empty p { margin: 0 auto; max-width: 420px; font-size: 12.5px; line-height: 1.6; }
.empty .btn { margin-top: 16px; }

/* ---- Chart frame ---- */
.chart-wrap { position: relative; height: 320px; }
.chart-wrap.tall { height: 420px; }
.chart-wrap.short { height: 190px; }

/* ---- Key reveal ---- */
.secret {
    display: flex; align-items: center; gap: 8px;
    font-family: var(--mono); font-size: 12px;
    background: var(--surface-2); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 9px 11px; word-break: break-all;
}
.secret .val { flex: 1; min-width: 0; }
.secret.blurred .val { filter: blur(5px); user-select: none; }

.banner {
    display: flex; gap: 11px; align-items: flex-start;
    padding: 12px 14px; border-radius: var(--radius-sm);
    border: 1px solid var(--border-strong); background: var(--surface-2);
    font-size: 12.5px; color: var(--text-2); margin-bottom: 16px;
}
.banner.warn { border-color: rgba(250,178,25,.4); background: var(--warn-bg); }
.banner.crit { border-color: rgba(208,59,59,.4); background: var(--critical-bg); }
.banner.info { border-color: rgba(41,163,220,.35); background: var(--brand-deep); }
.banner strong { color: var(--text-1); }

.switch { display: inline-flex; align-items: center; gap: 9px; cursor: pointer; }
.switch input { display: none; }
.switch .track {
    width: 38px; height: 21px; border-radius: 999px; background: var(--surface-3);
    border: 1px solid var(--border-strong); position: relative; transition: background .15s;
}
.switch .track::after {
    content: ""; position: absolute; top: 2px; left: 2px;
    width: 15px; height: 15px; border-radius: 50%; background: var(--text-2);
    transition: transform .15s, background .15s;
}
.switch input:checked + .track { background: var(--brand); border-color: var(--brand); }
.switch input:checked + .track::after { transform: translateX(17px); background: #fff; }
.switch input:disabled + .track { opacity: .45; cursor: not-allowed; }

.split { display: grid; grid-template-columns: 320px minmax(0,1fr); gap: 16px; align-items: start; }

@media (max-width: 1100px) {
    .g-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .g-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .split { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
    .sidebar { position: fixed; z-index: 60; transform: translateX(-100%); transition: transform .2s; height: 100%; }
    .sidebar.open { transform: none; }
    .g-4, .g-3, .g-2 { grid-template-columns: 1fr; }
    .content { padding: 14px; }
}