:root {
    color-scheme: dark;
    --background: #08111f;
    --surface: #101c2e;
    --surface-2: #17263b;
    --border: #29405f;
    --text: #edf5ff;
    --muted: #9db0c8;
    --accent: #48a7ff;
    --success: #45d483;
    --danger: #ff667a;
    --warning: #ffc857;
    --shadow: 0 18px 48px rgba(0, 0, 0, .25);
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at 10% 0%, rgba(72, 167, 255, .16), transparent 30rem),
        var(--background);
    color: var(--text);
}
button, input, select, textarea { font: inherit; }
a { color: inherit; text-decoration: none; }
code { font-family: "SFMono-Regular", Consolas, monospace; }

.shell { width: min(1440px, 94%); margin: 0 auto; padding: 24px 0 48px; }
.topbar {
    display: flex; justify-content: space-between; gap: 20px; align-items: center;
    margin-bottom: 24px;
}
.brand h1 { margin: 0; font-size: clamp(1.55rem, 4vw, 2.4rem); }
.brand p { margin: 6px 0 0; color: var(--muted); }
.status-row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.badge {
    display: inline-flex; align-items: center; gap: 7px;
    border: 1px solid var(--border); border-radius: 999px;
    padding: 7px 11px; background: rgba(16, 28, 46, .8);
    color: var(--muted); font-size: .88rem;
}
.badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--warning); }
.badge.online::before { background: var(--success); box-shadow: 0 0 12px rgba(69,212,131,.7); }
.badge.offline::before { background: var(--danger); }
.grid { display: grid; gap: 18px; }
.summary-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 18px; }
.workspace { grid-template-columns: minmax(260px, .75fr) minmax(0, 2.25fr); align-items: start; }
.card {
    background: linear-gradient(180deg, rgba(23,38,59,.94), rgba(16,28,46,.96));
    border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--shadow);
}
.card-body { padding: 19px; }
.card h2, .card h3 { margin-top: 0; }
.metric-value { font-size: 1.8rem; font-weight: 800; margin-top: 7px; }
.muted { color: var(--muted); }
.section-header {
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
    padding: 18px 19px 0;
}
.section-header h2 { margin: 0; }
.device-list { display: grid; gap: 10px; padding: 14px; }
.device-button {
    width: 100%; text-align: left; color: inherit; border: 1px solid var(--border);
    background: var(--surface); border-radius: 13px; padding: 14px;
    cursor: pointer; transition: transform .15s ease, border-color .15s ease;
}
.device-button:hover, .device-button.active { transform: translateY(-1px); border-color: var(--accent); }
.device-title { display: flex; justify-content: space-between; align-items: center; gap: 10px; font-weight: 800; }
.device-meta { color: var(--muted); font-size: .88rem; margin-top: 8px; }
.detail-empty { padding: 60px 24px; text-align: center; color: var(--muted); }
.detail-content { display: none; }
.detail-content.visible { display: block; }
.detail-heading { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.detail-heading h2 { margin-bottom: 5px; }
.action-link, .primary-button, .secondary-button {
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 11px; padding: 10px 14px; cursor: pointer; font-weight: 750;
}
.action-link, .primary-button { background: var(--accent); border: 1px solid var(--accent); color: #04111e; }
.secondary-button { background: transparent; border: 1px solid var(--border); color: var(--text); }
.metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 18px 0; }
.metric {
    background: rgba(8,17,31,.45); border: 1px solid var(--border);
    border-radius: 13px; padding: 14px;
}
.metric-label { color: var(--muted); font-size: .84rem; }
.metric-number { margin-top: 5px; font-size: 1.35rem; font-weight: 800; }
.charts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.chart-card { background: rgba(8,17,31,.45); border: 1px solid var(--border); border-radius: 13px; padding: 12px; }
.chart-card canvas { width: 100%; height: 145px; display: block; }
.two-column { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 18px; }
label { display: block; color: var(--muted); font-weight: 700; font-size: .88rem; margin: 12px 0 6px; }
input, select, textarea {
    width: 100%; border-radius: 10px; border: 1px solid var(--border);
    background: #091525; color: var(--text); padding: 10px 11px;
}
textarea { min-height: 115px; resize: vertical; font-family: "SFMono-Regular", Consolas, monospace; }
.button-row { display: flex; gap: 10px; margin-top: 12px; align-items: center; flex-wrap: wrap; }
.feedback { color: var(--muted); font-size: .9rem; }
.feedback.error { color: var(--danger); }
.feedback.success { color: var(--success); }
pre {
    margin: 0; overflow: auto; max-height: 330px; white-space: pre-wrap; word-break: break-word;
    background: #07111f; border: 1px solid var(--border); border-radius: 12px; padding: 14px;
}
.history-card { margin-top: 18px; }
.table-wrap { overflow-x: auto; padding: 0 14px 14px; }
table { width: 100%; border-collapse: collapse; min-width: 850px; }
th, td { padding: 11px 10px; text-align: left; border-bottom: 1px solid rgba(41,64,95,.75); vertical-align: top; }
th { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; }
td code { white-space: pre-wrap; word-break: break-all; }
.direction { font-weight: 800; }
.direction.published { color: var(--accent); }
.direction.received { color: var(--success); }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.toolbar input { min-width: 220px; }
.hidden { display: none !important; }

.pin-layout { display: grid; grid-template-columns: minmax(300px, .85fr) minmax(0, 1.15fr); gap: 18px; }
.board {
    min-height: 590px; background: linear-gradient(145deg, #0a332e, #0b5145);
    border: 1px solid #2c8271; border-radius: 28px; padding: 24px;
    position: relative; box-shadow: inset 0 0 45px rgba(0,0,0,.3), var(--shadow);
}
.board-title { text-align: center; font-weight: 900; font-size: 1.2rem; margin-bottom: 22px; }
.pin-list { display: grid; gap: 9px; }
.pin {
    display: grid; grid-template-columns: 72px 1fr auto; align-items: center; gap: 10px;
    background: rgba(3,19,21,.65); border: 1px solid rgba(143,232,210,.25);
    border-radius: 11px; padding: 10px;
}
.pin-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--muted); }
.pin.high .pin-dot { background: var(--success); box-shadow: 0 0 12px rgba(69,212,131,.8); }
.pin.low .pin-dot { background: #8191a6; }
.pin.analog .pin-dot { background: var(--accent); box-shadow: 0 0 12px rgba(72,167,255,.8); }
.pin-value { font-weight: 850; }
.pin-table { display: grid; gap: 10px; }
.pin-data-row {
    display: grid; grid-template-columns: 76px 1fr 130px; gap: 12px; align-items: center;
    border: 1px solid var(--border); border-radius: 12px; padding: 12px;
    background: rgba(8,17,31,.45);
}

@media (max-width: 1050px) {
    .summary-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .workspace, .pin-layout { grid-template-columns: 1fr; }
    .device-list { grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); }
}
@media (max-width: 760px) {
    .topbar { align-items: flex-start; flex-direction: column; }
    .status-row { justify-content: flex-start; }
    .summary-grid, .metrics, .charts, .two-column { grid-template-columns: 1fr; }
    .shell { width: min(96%, 700px); padding-top: 15px; }
    .card-body { padding: 15px; }
    .pin-data-row { grid-template-columns: 62px 1fr; }
    .pin-data-row .pin-value { grid-column: 2; }
}

/* ESP32-C5 DevKit board layout */
.board-page-grid { display:grid; grid-template-columns:minmax(620px,1.55fr) minmax(340px,.75fr); gap:18px; align-items:start; }
.devkit-stage { overflow:hidden; }
.board-toolbar { display:flex; justify-content:space-between; gap:16px; align-items:center; padding:18px 20px; border-bottom:1px solid var(--border); }
.board-toolbar>div { display:grid; gap:4px; }
.devkit-wrap { min-height:760px; padding:58px 150px; display:grid; place-items:center; overflow:auto; background:radial-gradient(circle at center,rgba(72,167,255,.1),transparent 28rem),linear-gradient(135deg,rgba(8,17,31,.75),rgba(16,28,46,.4)); }
.devkit-board { position:relative; width:340px; height:650px; border-radius:20px 20px 34px 34px; background:linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(145deg,#063d35,#07584a 65%,#05362f); background-size:18px 18px,18px 18px,auto; border:2px solid #2d8e7b; box-shadow:inset 0 0 60px rgba(0,0,0,.45),0 30px 70px rgba(0,0,0,.45); }
.devkit-board::after { content:""; position:absolute; inset:9px; border:1px solid rgba(195,255,239,.15); border-radius:14px 14px 28px 28px; pointer-events:none; }
.antenna-zone { position:absolute; width:185px; height:76px; left:77px; top:0; border-radius:16px 16px 5px 5px; background:#17202a; border:1px solid #344454; }
.antenna-lines { width:105px; height:40px; margin:12px auto; background:repeating-linear-gradient(90deg,transparent 0 7px,#9b7c36 8px 11px,transparent 12px 18px); clip-path:polygon(0 0,100% 0,100% 70%,83% 70%,83% 100%,66% 100%,66% 70%,49% 70%,49% 100%,32% 100%,32% 70%,15% 70%,15% 100%,0 100%); }
.module-can { position:absolute; left:61px; top:82px; width:218px; height:184px; border-radius:8px; color:#27323d; background:linear-gradient(145deg,#e8edf0,#aeb8be); border:2px solid #7d8b93; box-shadow:0 8px 20px rgba(0,0,0,.35); display:flex; flex-direction:column; justify-content:center; align-items:center; gap:7px; text-align:center; }
.module-brand { letter-spacing:.16em; font-size:.72rem; }
.module-can strong { font-size:.93rem; }
.module-can small { font-size:.66rem; }
.rgb-led { position:absolute; left:50px; top:306px; width:24px; height:24px; border:3px solid #d2c48d; background:#f6e7a3; border-radius:4px; display:grid; place-items:center; }
.rgb-led span { width:9px; height:9px; border-radius:2px; background:#708090; }
.rgb-led.active span { background:var(--success); box-shadow:0 0 18px var(--success); }
.button-pair { position:absolute; left:78px; right:78px; bottom:110px; display:flex; justify-content:space-between; }
.button-pair>div { display:grid; justify-items:center; gap:5px; }
.button-pair span { width:42px; height:32px; border-radius:8px; background:linear-gradient(#232a31,#090c0f); border:3px solid #83909a; }
.button-pair small { font-size:.59rem; color:rgba(255,255,255,.8); }
.usb-pair { position:absolute; bottom:-2px; left:48px; right:48px; display:flex; justify-content:space-between; }
.usb-port { width:94px; height:61px; border-radius:10px 10px 2px 2px; background:linear-gradient(90deg,#9ea9af,#edf1f3,#8d989e); border:2px solid #67737a; display:grid; place-items:end center; color:#27313a; }
.usb-port::before { content:""; width:58px; height:18px; border-radius:7px 7px 3px 3px; background:#172028; align-self:center; margin-bottom:-7px; }
.usb-port span { font-size:.58rem; font-weight:900; margin-bottom:4px; }
.board-name { position:absolute; left:100px; right:100px; top:350px; text-align:center; font-size:.72rem; font-weight:800; letter-spacing:.08em; color:rgba(226,255,247,.75); }
.header-column { position:absolute; top:51px; bottom:51px; width:28px; display:grid; grid-template-rows:repeat(16,1fr); z-index:4; }
.header-left { left:9px; }
.header-right { right:9px; }
.physical-pin { position:relative; display:grid; place-items:center; }
.header-hole { width:16px; height:16px; border-radius:50%; background:radial-gradient(circle,#10151a 0 38%,#d1ad47 42% 65%,#62491b 69%); box-shadow:0 0 0 2px rgba(245,204,94,.12); }
.pin-callout { position:absolute; width:128px; display:grid; gap:1px; pointer-events:none; }
.pin-callout strong { font-size:.72rem; }
.pin-callout span { font-size:.62rem; color:var(--muted); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.pin-callout.left { right:29px; text-align:right; }
.pin-callout.right { left:29px; text-align:left; }
.physical-pin::before { content:""; position:absolute; width:8px; height:8px; border-radius:50%; z-index:6; }
.physical-pin.pin-high::before { background:var(--success); box-shadow:0 0 14px var(--success); }
.physical-pin.pin-low::before { background:#8191a6; }
.physical-pin.pin-analog::before { background:var(--accent); box-shadow:0 0 14px var(--accent); }
.physical-pin.pin-unavailable::before { background:var(--danger); }
.physical-pin.pin-power::before { background:var(--warning); }
.physical-pin.pin-ground::before { background:#111; border:1px solid #94a1af; }
.physical-pin.pin-special::before { background:#b17cff; }
.physical-pin.pin-unmonitored::before { background:#37485e; }
.pin-legend { display:flex; gap:17px; flex-wrap:wrap; padding:15px 20px 18px; border-top:1px solid var(--border); color:var(--muted); font-size:.82rem; }
.pin-legend span { display:inline-flex; gap:7px; align-items:center; }
.legend-dot,.live-pin-dot { width:10px; height:10px; border-radius:50%; display:inline-block; }
.legend-dot.digital-high,.pin-data-row.pin-high .live-pin-dot { background:var(--success); box-shadow:0 0 10px rgba(69,212,131,.7); }
.legend-dot.digital-low,.pin-data-row.pin-low .live-pin-dot { background:#8191a6; }
.legend-dot.analog-live,.pin-data-row.pin-analog .live-pin-dot { background:var(--accent); box-shadow:0 0 10px rgba(72,167,255,.7); }
.legend-dot.unmonitored { background:#37485e; }
.legend-dot.special { background:var(--warning); }
.pin-table { display:grid; gap:10px; }
.pin-data-row { display:grid; grid-template-columns:12px 75px minmax(120px,1fr) auto; gap:11px; align-items:center; border:1px solid var(--border); border-radius:12px; padding:12px; background:rgba(8,17,31,.45); }
.pin-data-row.pin-high { border-color:rgba(69,212,131,.35); }
.pin-data-row.pin-analog { border-color:rgba(72,167,255,.35); }
.pin-data-row.pin-unavailable { border-color:rgba(255,102,122,.4); }
.pin-value { font-weight:850; text-align:right; }
@media (max-width:1120px) { .board-page-grid { grid-template-columns:1fr; } }
@media (max-width:760px) {
    .devkit-wrap { min-height:700px; padding:38px 120px; justify-content:center; }
    .devkit-board { transform:scale(.88); transform-origin:center; }
    .board-toolbar { align-items:flex-start; flex-direction:column; }
    .pin-data-row { grid-template-columns:12px 64px 1fr; }
    .pin-data-row .pin-value { grid-column:3; text-align:left; }
}