/* ═══════════════════════════════════════════════════════════════
   Channel-Lion C2  ·  Design System v3  ·  Premium Dark Sidebar
   ═══════════════════════════════════════════════════════════════ */

/* ── 1. Design Tokens ──────────────────────────────────────────── */
:root {
  /* Primary palette */
  --sky:        #38BDF8;
  --sky-d:      #0EA5E9;
  --sky-dd:     #0284C7;
  --sky-l:      #E0F2FE;
  --sky-xl:     #F0F9FF;
  --sky-glow:   rgba(56,189,248,.18);

  /* Accent palette */
  --cyan:       #22D3EE;
  --cyan-l:     #CFFAFE;
  --violet:     #A78BFA;
  --violet-d:   #7C3AED;
  --violet-l:   #EDE9FE;
  --emerald:    #34D399;
  --emerald-d:  #10B981;
  --emerald-l:  #D1FAE5;
  --amber:      #FBBF24;
  --amber-d:    #D97706;
  --amber-l:    #FEF3C7;
  --rose:       #FB7185;
  --rose-d:     #E11D48;
  --rose-l:     #FFE4E6;

  /* Surface – light side */
  --bg:         #F0F4F8;
  --bg-card:    #FFFFFF;
  --border:     rgba(15,23,42,.08);
  --border-l:   rgba(15,23,42,.05);

  /* Text */
  --t1:         #0A1628;
  --t2:         #1E3A5F;
  --t3:         #4A6FA5;
  --t4:         #8BAED4;

  /* Sidebar – dark */
  --sb-bg:      #060D1A;
  --sb-bg2:     #0A1628;
  --sb-border:  rgba(56,189,248,.08);
  --sb-t1:      #F1F5F9;
  --sb-t2:      #94A3B8;
  --sb-t3:      #475569;
  --sb-hover:   rgba(56,189,248,.07);
  --sb-active:  rgba(56,189,248,.12);

  /* Shadows */
  --shadow-xs:  0 1px 2px rgba(15,23,42,.06);
  --shadow-sm:  0 2px 8px rgba(15,23,42,.08), 0 1px 2px rgba(15,23,42,.04);
  --shadow:     0 4px 16px rgba(15,23,42,.10), 0 2px 4px rgba(15,23,42,.05);
  --shadow-lg:  0 20px 60px rgba(15,23,42,.15), 0 4px 12px rgba(15,23,42,.08);
  --shadow-glow-sky:     0 0 20px rgba(56,189,248,.25);
  --shadow-glow-violet:  0 0 20px rgba(167,139,250,.25);
  --shadow-glow-emerald: 0 0 20px rgba(52,211,153,.25);

  /* Sizes */
  --sb-w:       260px;
  --tb-h:       58px;
  --radius:     14px;
  --radius-sm:  10px;
  --radius-lg:  20px;
  --radius-xl:  24px;
  --mono:       'SF Mono', 'JetBrains Mono', 'Fira Code', monospace;
  --sans:       'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --tr:         .18s cubic-bezier(.4,0,.2,1);
  --tr-m:       .3s cubic-bezier(.4,0,.2,1);
}

/* ── 2. Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--t1);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: 13px; }
::selection { background: var(--sky-l); color: var(--sky-dd); }
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(15,23,42,.15); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: rgba(15,23,42,.25); }

/* ── 3. Layout Shell ──────────────────────────────────────────── */
.layout { display: flex; min-height: 100vh; }

/* ── 4. Sidebar ───────────────────────────────────────────────── */
.sidebar {
  width: var(--sb-w);
  background: var(--sb-bg);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  display: flex; flex-direction: column;
  z-index: 200;
  overflow: hidden;
  border-right: 1px solid var(--sb-border);
  /* subtle dot-grid background */
  background-image:
    radial-gradient(circle at 25% 0%, rgba(56,189,248,.06) 0%, transparent 55%),
    radial-gradient(circle at 80% 90%, rgba(167,139,250,.05) 0%, transparent 50%);
}

/* Brand area */
.sb-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 20px 18px 16px;
  border-bottom: 1px solid var(--sb-border);
  flex-shrink: 0;
}
.sb-logo-img {
  width: 36px; height: 36px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 0 16px rgba(56,189,248,.3), 0 2px 8px rgba(0,0,0,.4);
  border: 1px solid rgba(56,189,248,.2);
}
.sb-logo-fallback {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--sky-d), var(--cyan));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 900; color: #fff;
  flex-shrink: 0;
  box-shadow: 0 0 16px rgba(56,189,248,.3);
  letter-spacing: -.5px;
}
.sb-name  { font-size: 14px; font-weight: 800; color: var(--sb-t1); letter-spacing: -.3px; line-height: 1.2; }
.sb-sub   { font-size: 10px; color: var(--sb-t3); font-weight: 500; margin-top: 1px; }
.sb-ver   {
  margin-left: auto;
  font-size: 9px; font-weight: 700;
  padding: 2px 6px; border-radius: 5px;
  background: rgba(56,189,248,.12);
  color: var(--sky); letter-spacing: .5px;
  border: 1px solid rgba(56,189,248,.2);
  flex-shrink: 0;
}

/* Body */
.sb-body {
  flex: 1;
  padding: 8px 10px;
  overflow-y: auto;
  overflow-x: hidden;
}
.sb-body::-webkit-scrollbar { width: 3px; }
.sb-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,.06); }

/* Section label */
.sb-sec {
  display: flex; align-items: center; gap: 6px;
  font-size: 9.5px; font-weight: 800; color: var(--sb-t3);
  letter-spacing: 1.2px; text-transform: uppercase;
  padding: 16px 8px 5px;
}
.sb-sec::after {
  content: '';
  flex: 1; height: 1px;
  background: linear-gradient(90deg, var(--sb-border) 0%, transparent 100%);
}

/* Nav item */
.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 8.5px 10px;
  border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500;
  color: var(--sb-t2);
  transition: background var(--tr), color var(--tr), box-shadow var(--tr);
  position: relative;
  margin-bottom: 1px;
  user-select: none;
  cursor: pointer;
}
.nav-item svg { width: 16px; height: 16px; flex-shrink: 0; transition: color var(--tr); }
.nav-item:hover {
  background: var(--sb-hover);
  color: var(--sb-t1);
}
.nav-item.active {
  background: var(--sb-active);
  color: var(--sky);
  font-weight: 600;
  box-shadow: inset 3px 0 0 var(--sky);
}
.nav-item.active svg { color: var(--sky); }

/* Nav badge */
.nav-badge {
  margin-left: auto; min-width: 18px;
  text-align: center;
  font-size: 10px; font-weight: 800;
  padding: 1px 6px; border-radius: 99px;
  background: rgba(56,189,248,.15);
  color: var(--sky);
  border: 1px solid rgba(56,189,248,.2);
  line-height: 14px;
}
.nav-badge.alert { background: rgba(251,113,133,.15); color: var(--rose);   border-color: rgba(251,113,133,.2); }
.nav-badge.warn  { background: rgba(251,191,36,.15);  color: var(--amber);  border-color: rgba(251,191,36,.2); }
.nav-badge.green { background: rgba(52,211,153,.15);  color: var(--emerald);border-color: rgba(52,211,153,.2); }

/* Advanced toggle */
.nav-adv-toggle {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 10px; border-radius: var(--radius-sm);
  font-size: 9.5px; font-weight: 800; color: var(--sb-t3);
  letter-spacing: 1px; text-transform: uppercase;
  cursor: pointer; margin-top: 8px;
  transition: color var(--tr);
}
.nav-adv-toggle:hover { color: var(--sb-t2); }
.nav-adv-toggle .adv-arrow { margin-left: auto; width: 10px; height: 10px; transition: transform var(--tr-m); }
.nav-adv-toggle.open .adv-arrow { transform: rotate(90deg); }
.nav-adv-section { overflow: hidden; max-height: 0; transition: max-height .35s cubic-bezier(.4,0,.2,1); }
.nav-adv-section.open { max-height: 500px; }

/* Sidebar footer */
.sb-footer {
  padding: 14px 16px;
  border-top: 1px solid var(--sb-border);
  flex-shrink: 0;
  background: rgba(0,0,0,.15);
}
.sb-status-row {
  display: flex; align-items: center; gap: 7px;
  margin-bottom: 10px;
}
.sb-status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--emerald);
  box-shadow: 0 0 8px rgba(52,211,153,.6);
  animation: sb-pulse 2.5s infinite;
  flex-shrink: 0;
}
@keyframes sb-pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(.8)} }
.sb-status-label { font-size: 11px; color: var(--sb-t2); font-weight: 500; }
.sb-status-port  {
  margin-left: auto;
  font-family: var(--mono); font-size: 10px;
  color: var(--sky); background: rgba(56,189,248,.1);
  padding: 1px 7px; border-radius: 5px;
  border: 1px solid rgba(56,189,248,.15);
}
.sb-action-row {
  display: flex; gap: 6px;
}
.sb-action-btn {
  flex: 1; padding: 6px 0;
  text-align: center; border-radius: 8px;
  font-size: 11px; font-weight: 600;
  color: var(--sb-t3);
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.06);
  transition: background var(--tr), color var(--tr), border-color var(--tr);
}
.sb-action-btn:hover {
  background: rgba(56,189,248,.1);
  color: var(--sky); border-color: rgba(56,189,248,.2);
}

/* ── 5. Topbar ────────────────────────────────────────────────── */
.topbar {
  position: fixed;
  top: 0; left: var(--sb-w); right: 0;
  height: var(--tb-h);
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
  padding: 0 22px;
  z-index: 100;
  transition: left var(--tr-m);
}
.tb-hamburger {
  display: none; width: 32px; height: 32px; border-radius: 8px;
  align-items: center; justify-content: center;
  color: var(--t3); transition: background var(--tr);
}
.tb-hamburger:hover { background: rgba(15,23,42,.06); }

/* Premium search bar */
.tb-search-wrap {
  flex: 1; max-width: 420px; position: relative;
  display: flex; align-items: center;
}
.tb-search {
  width: 100%;
  background: rgba(15,23,42,.04);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px 8px 38px;
  font-size: 13px; color: var(--t2);
  cursor: pointer;
  transition: border-color var(--tr), background var(--tr), box-shadow var(--tr);
}
.tb-search-icon {
  position: absolute; left: 12px;
  color: var(--t4); pointer-events: none;
  display: flex; align-items: center;
}
.tb-search:focus { outline: none; border-color: var(--sky); background: #fff; box-shadow: 0 0 0 4px rgba(56,189,248,.1); }
.tb-search::placeholder { color: var(--t4); }
.tb-search-kbd {
  position: absolute; right: 10px;
  display: flex; gap: 3px;
}
.kb {
  font-size: 10px; font-weight: 600; color: var(--t4);
  padding: 1px 5px; border-radius: 4px;
  background: rgba(15,23,42,.06);
  border: 1px solid var(--border);
}

.tb-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.tb-clock {
  font-family: var(--mono); font-size: 12px;
  color: var(--t3); letter-spacing: .3px;
  padding: 4px 10px; border-radius: 7px;
  background: rgba(15,23,42,.04);
}

/* Premium pills */
.tb-pill {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 11px; border-radius: 99px;
  font-size: 11px; font-weight: 700;
  border: 1px solid transparent;
  transition: all var(--tr);
}
.tb-pill.sse-on {
  background: rgba(52,211,153,.1);
  color: var(--emerald-d);
  border-color: rgba(52,211,153,.2);
}
.tb-pill.sse-off { background: rgba(15,23,42,.06); color: var(--t4); }
.tb-pill.devices-on {
  background: rgba(56,189,248,.08);
  color: var(--sky-dd);
  border-color: rgba(56,189,248,.15);
}
.tb-pulse {
  width: 7px; height: 7px; border-radius: 50%;
  background: currentColor;
  animation: tb-blink 2s infinite;
}
@keyframes tb-blink { 0%,100%{opacity:1} 50%{opacity:.35} }
.tb-dot-off { width: 7px; height: 7px; border-radius: 50%; background: var(--t4); }

/* ── 6. Main Content ──────────────────────────────────────────── */
.main {
  margin-left: var(--sb-w);
  padding-top: var(--tb-h);
  min-height: 100vh;
  transition: margin-left var(--tr-m);
}
.main-inner { padding: 24px 28px; max-width: 1560px; }

/* ── 7. Page Header ───────────────────────────────────────────── */
.ph { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 22px; gap: 16px; flex-wrap: wrap; }
.ph-title {
  font-size: 24px; font-weight: 800;
  color: var(--t1); letter-spacing: -.6px; line-height: 1.1;
}
.ph-sub { font-size: 13px; color: var(--t3); margin-top: 3px; font-weight: 400; }
.ph-breadcrumb { font-size: 12px; color: var(--t4); display: flex; align-items: center; gap: 5px; margin-top: 4px; }
.ph-breadcrumb a { color: var(--sky-d); }
.ph-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* ── 8. KPI Cards ─────────────────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px 16px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--tr), transform var(--tr);
  animation: card-in .45s cubic-bezier(.4,0,.2,1) both;
}
.kpi-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }

/* Gradient top accent line */
.kpi-card::before {
  content: ''; position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
}
.kpi-card.c-sky::before    { background: linear-gradient(90deg, #38BDF8, #22D3EE); }
.kpi-card.c-cyan::before   { background: linear-gradient(90deg, #22D3EE, #6EE7B7); }
.kpi-card.c-violet::before { background: linear-gradient(90deg, #A78BFA, #38BDF8); }
.kpi-card.c-emerald::before{ background: linear-gradient(90deg, #34D399, #22D3EE); }
.kpi-card.c-amber::before  { background: linear-gradient(90deg, #FBBF24, #F87171); }
.kpi-card.c-rose::before   { background: linear-gradient(90deg, #FB7185, #FBBF24); }

/* Radial glow corner */
.kpi-card::after {
  content: ''; position: absolute;
  top: -40px; right: -20px;
  width: 100px; height: 100px; border-radius: 50%;
  pointer-events: none;
}
.kpi-card.c-sky::after    { background: radial-gradient(circle, rgba(56,189,248,.08) 0%, transparent 70%); }
.kpi-card.c-cyan::after   { background: radial-gradient(circle, rgba(34,211,238,.08) 0%, transparent 70%); }
.kpi-card.c-violet::after { background: radial-gradient(circle, rgba(167,139,250,.08) 0%, transparent 70%); }
.kpi-card.c-emerald::after{ background: radial-gradient(circle, rgba(52,211,153,.08) 0%, transparent 70%); }

.kpi-top { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 14px; }
.kpi-icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; flex-shrink: 0;
  position: relative; z-index: 1;
}
.kpi-icon.c-sky    { background: linear-gradient(135deg, #E0F2FE, #BAE6FD); }
.kpi-icon.c-cyan   { background: linear-gradient(135deg, #CFFAFE, #A5F3FC); }
.kpi-icon.c-violet { background: linear-gradient(135deg, #EDE9FE, #DDD6FE); }
.kpi-icon.c-emerald{ background: linear-gradient(135deg, #D1FAE5, #A7F3D0); }
.kpi-icon.c-amber  { background: linear-gradient(135deg, #FEF3C7, #FDE68A); }
.kpi-icon.c-rose   { background: linear-gradient(135deg, #FFE4E6, #FECDD3); }
.kpi-badge {
  font-size: 10px; font-weight: 700;
  padding: 3px 9px; border-radius: 99px;
  display: inline-flex; align-items: center; gap: 3px;
  position: relative; z-index: 1;
}
.kpi-badge.up      { background: var(--emerald-l); color: var(--emerald-d); }
.kpi-badge.neutral { background: rgba(15,23,42,.06); color: var(--t3); }
.kpi-val {
  font-size: 34px; font-weight: 900;
  color: var(--t1); letter-spacing: -1.5px;
  line-height: 1; margin-bottom: 4px;
  position: relative; z-index: 1;
  font-variant-numeric: tabular-nums;
}
.kpi-label { font-size: 12px; font-weight: 600; color: var(--t3); margin-bottom: 12px; }
.kpi-spark { height: 40px; }

@keyframes card-in { from{opacity:0;transform:translateY(12px)} to{opacity:1;transform:none} }
.kpi-grid .kpi-card:nth-child(1){animation-delay:.04s}
.kpi-grid .kpi-card:nth-child(2){animation-delay:.08s}
.kpi-grid .kpi-card:nth-child(3){animation-delay:.12s}
.kpi-grid .kpi-card:nth-child(4){animation-delay:.16s}

/* ── 9. Cards ─────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--tr);
}
.card:hover { box-shadow: var(--shadow); }
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px 14px;
  border-bottom: 1px solid var(--border-l);
  gap: 12px;
}
.card-title {
  font-size: 14px; font-weight: 700; color: var(--t1);
  display: flex; align-items: center; gap: 7px;
  letter-spacing: -.2px;
}
.card-sub  { font-size: 11.5px; color: var(--t3); margin-top: 2px; }
.card-actions { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.card-body { padding: 18px 20px; }

/* ── 10. Dashboard Grid ───────────────────────────────────────── */
.db-row1 {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 16px;
  margin-bottom: 16px;
  align-items: stretch;
}
.db-row2 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.db-row3 {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
}

/* ── 11. Device Panel ─────────────────────────────────────────── */
.device-panel-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.dpc-header {
  padding: 16px 18px 14px;
  border-bottom: 1px solid var(--border-l);
  display: flex; align-items: center; justify-content: space-between;
  background: linear-gradient(135deg, rgba(56,189,248,.04), transparent);
}
.dpc-title { font-size: 14px; font-weight: 700; color: var(--t1); display: flex; align-items: center; gap: 7px; }
.dpc-body  { padding: 12px; }

/* Online ring */
.dpc-ring-row {
  display: flex; align-items: center; justify-content: center;
  gap: 16px; padding: 14px 0 10px;
}
.dpc-ring-wrap { position: relative; width: 72px; height: 72px; }
.dpc-ring-center {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.dpc-ring-num  { font-size: 20px; font-weight: 900; color: var(--t1); line-height: 1; }
.dpc-ring-lbl  { font-size: 9px; color: var(--t4); font-weight: 600; }
.dpc-ring-legend { display: flex; flex-direction: column; gap: 7px; }
.dpc-rl-item   { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--t2); }
.dpc-rl-dot    { width: 9px; height: 9px; border-radius: 3px; flex-shrink: 0; }
.dpc-rl-num    { margin-left: auto; font-weight: 800; font-size: 13px; color: var(--t1); }

.dpc-divider { height: 1px; background: var(--border-l); margin: 10px 0; }

/* Device list in panel */
.dpc-device {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 10px;
  border-radius: var(--radius-sm);
  transition: background var(--tr);
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  margin-bottom: 6px;
}
.dpc-device:hover { background: var(--sky-xl); border-color: rgba(56,189,248,.15); }
.dpc-device:last-child { margin-bottom: 0; }
.dpc-device-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--sky-xl), var(--cyan-l));
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; flex-shrink: 0;
}
.dpc-device-info { flex: 1; min-width: 0; }
.dpc-device-name { font-size: 13px; font-weight: 700; color: var(--t1); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dpc-device-meta { font-size: 11px; color: var(--t3); margin-top: 1px; }
.dpc-device-id   { font-family: var(--mono); font-size: 9.5px; color: var(--t4); margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Quick actions */
.dpc-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-top: 10px; }
.dpc-action-btn {
  padding: 8px 0; border-radius: var(--radius-sm);
  font-size: 11px; font-weight: 700;
  text-align: center; cursor: pointer;
  transition: all var(--tr);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--t3);
}
.dpc-action-btn:hover { background: var(--sky-l); color: var(--sky-dd); border-color: rgba(56,189,248,.3); }
.dpc-action-btn.primary { background: rgba(56,189,248,.08); color: var(--sky-dd); border-color: rgba(56,189,248,.2); }
.dpc-action-btn.primary:hover { background: var(--sky-d); color: #fff; }

/* ── 12. Feed rows ────────────────────────────────────────────── */
.feed-log {
  max-height: 260px; overflow-y: auto;
  background: #F8FAFC;
  border-radius: 0;
}
.feed-row {
  display: grid;
  grid-template-columns: 90px 44px 1fr;
  gap: 8px;
  align-items: baseline;
  padding: 6px 16px;
  border-bottom: 1px solid rgba(15,23,42,.04);
  transition: background var(--tr);
  font-size: 12px;
}
.feed-row:hover { background: rgba(56,189,248,.04); }
.feed-ts  { font-family: var(--mono); font-size: 10px; color: var(--t4); }
.feed-lvl { font-size: 9.5px; font-weight: 800; letter-spacing: .4px; }
.feed-msg { color: var(--t2); line-height: 1.45; word-break: break-all; font-size: 11.5px; }
.feed-row.info .feed-lvl { color: var(--sky-d);    }
.feed-row.warn .feed-lvl { color: var(--amber-d);  }
.feed-row.err  .feed-lvl { color: var(--rose-d);   background: rgba(251,113,133,.05); }

/* ── 13. Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 99px;
  font-size: 11px; font-weight: 700;
}
.b-sky     { background: rgba(56,189,248,.12);  color: var(--sky-dd);   border: 1px solid rgba(56,189,248,.2);  }
.b-cyan    { background: rgba(34,211,238,.12);  color: #0891B2;          border: 1px solid rgba(34,211,238,.2);  }
.b-violet  { background: rgba(167,139,250,.12); color: var(--violet-d); border: 1px solid rgba(167,139,250,.2); }
.b-emerald { background: rgba(52,211,153,.12);  color: var(--emerald-d);border: 1px solid rgba(52,211,153,.2);  }
.b-amber   { background: rgba(251,191,36,.12);  color: var(--amber-d);  border: 1px solid rgba(251,191,36,.2);  }
.b-rose    { background: rgba(251,113,133,.12); color: var(--rose-d);   border: 1px solid rgba(251,113,133,.2); }
.b-slate   { background: rgba(15,23,42,.06);    color: var(--t3);        border: 1px solid var(--border);        }

/* Status dot */
.status-dot {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 600;
}
.status-dot::before { content: ''; width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.status-dot.online::before  { background: var(--emerald); box-shadow: 0 0 6px rgba(52,211,153,.6); animation: sb-pulse 2s infinite; }
.status-dot.offline::before { background: rgba(15,23,42,.2); }
.status-dot.online  { color: var(--emerald-d); }
.status-dot.offline { color: var(--t4); }

/* ── 14. Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600;
  transition: all var(--tr);
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-primary {
  background: var(--sky-d); color: #fff;
  box-shadow: 0 2px 8px rgba(14,165,233,.3);
}
.btn-primary:hover { background: var(--sky-dd); box-shadow: 0 4px 16px rgba(14,165,233,.4); transform: translateY(-1px); }
.btn-ghost {
  background: rgba(15,23,42,.04); color: var(--t3);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: rgba(15,23,42,.08); color: var(--t2); border-color: rgba(15,23,42,.15); }
.btn-sm  { padding: 6px 12px; font-size: 12px; }
.btn-xs  { padding: 3px 8px;  font-size: 11px; border-radius: 7px; }
.btn-icon{ padding: 7px; border-radius: 8px; }

/* ── 15. Tables ───────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
  text-align: left; padding: 10px 16px;
  font-size: 11px; font-weight: 700; color: var(--t3);
  text-transform: uppercase; letter-spacing: .6px;
  background: rgba(15,23,42,.025);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border-l);
  color: var(--t2); vertical-align: middle;
}
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr { transition: background var(--tr); }
.table tbody tr:hover { background: rgba(56,189,248,.035); }
.mono { font-family: var(--mono); }
.t3   { color: var(--t3); }

/* ── 16. Device grid ──────────────────────────────────────────── */
.device-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 16px; }
.device-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 14px;
  transition: box-shadow var(--tr), transform var(--tr), border-color var(--tr);
  cursor: pointer;
}
.device-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); border-color: rgba(56,189,248,.25); }
.device-card.online { border-top: 3px solid var(--sky); }
.dc-header { display: flex; align-items: flex-start; justify-content: space-between; }
.dc-model-row { display: flex; align-items: center; gap: 12px; }
.dc-icon {
  width: 46px; height: 46px; border-radius: 12px;
  background: linear-gradient(135deg, var(--sky-xl), var(--cyan-l));
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; flex-shrink: 0;
}
.dc-model { font-size: 14px; font-weight: 700; color: var(--t1); }
.dc-os    { font-size: 12px; color: var(--t3); margin-top: 2px; }
.dc-id    { font-family: var(--mono); font-size: 10px; color: var(--t4); word-break: break-all; }
.dc-meta  { display: flex; flex-wrap: wrap; gap: 5px; }
.dc-tag   { display: inline-flex; align-items: center; gap: 4px; background: rgba(15,23,42,.05); color: var(--t3); font-size: 11px; font-weight: 500; padding: 2px 8px; border-radius: 6px; }
.dc-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; }
.dc-stat  { text-align: center; padding: 10px 6px; background: rgba(15,23,42,.025); border-radius: 10px; border: 1px solid var(--border-l); }
.dc-stat-val { font-size: 20px; font-weight: 900; color: var(--t1); line-height: 1; }
.dc-stat-lbl { font-size: 10px; color: var(--t4); font-weight: 600; margin-top: 2px; }
.dc-footer { display: flex; align-items: center; justify-content: space-between; }
.dc-time   { font-size: 11px; color: var(--t4); }
.sub-id-list { display: none; }
.sub-id-list.show { display: block; }

/* ── 17. Kanban ───────────────────────────────────────────────── */
.kanban { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; align-items: start; }
.kanban-col { background: rgba(15,23,42,.025); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.kanban-head { padding: 13px 16px; display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; color: var(--t1); border-bottom: 1px solid var(--border); background: var(--bg-card); }
.kanban-count { margin-left: auto; font-size: 11px; font-weight: 800; width: 22px; height: 22px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.kanban-pending .kanban-head { border-top: 3px solid var(--amber);   }
.kanban-sent    .kanban-head { border-top: 3px solid var(--sky-d);   }
.kanban-done    .kanban-head { border-top: 3px solid var(--emerald); }
.kanban-pending .kanban-count { background: rgba(251,191,36,.15);   color: var(--amber-d);  }
.kanban-sent    .kanban-count { background: rgba(56,189,248,.15);   color: var(--sky-dd);   }
.kanban-done    .kanban-count { background: rgba(52,211,153,.15);   color: var(--emerald-d);}
.kanban-body { padding: 10px; display: flex; flex-direction: column; gap: 8px; min-height: 80px; }
.task-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 13px 14px; box-shadow: var(--shadow-xs); transition: box-shadow var(--tr), transform var(--tr); }
.task-card:hover { box-shadow: var(--shadow); transform: translateY(-1px); }
.task-card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 7px; }
.task-dev     { font-family: var(--mono); font-size: 10.5px; color: var(--t3); margin-top: 3px; }
.task-time    { font-size: 10px; color: var(--t4); margin-top: 6px; }

/* ── 18. Tabs ─────────────────────────────────────────────────── */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab { padding: 11px 18px; font-size: 13px; font-weight: 600; color: var(--t3); border-bottom: 2px solid transparent; transition: all var(--tr); cursor: pointer; margin-bottom: -1px; }
.tab:hover { color: var(--t1); }
.tab.active { color: var(--sky-d); border-bottom-color: var(--sky-d); }

/* ── 19. Modals & overlays ────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(10,22,40,.5);
  backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  animation: fade-in .18s ease;
}
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%; max-width: 480px;
  animation: modal-in .2s cubic-bezier(.4,0,.2,1);
  overflow: hidden;
}
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px 16px; border-bottom: 1px solid var(--border-l); }
.modal-title { font-size: 16px; font-weight: 800; color: var(--t1); letter-spacing: -.3px; }
.modal-x { width: 28px; height: 28px; border-radius: 7px; display: flex; align-items: center; justify-content: center; color: var(--t4); transition: all var(--tr); }
.modal-x:hover { background: rgba(15,23,42,.08); color: var(--t2); }
.modal-body { padding: 22px; }
.modal-foot { display: flex; align-items: center; justify-content: flex-end; gap: 8px; padding: 14px 22px; border-top: 1px solid var(--border-l); background: rgba(15,23,42,.02); }

/* ── 20. Toasts ───────────────────────────────────────────────── */
.toast-root { position: fixed; bottom: 22px; right: 22px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 18px;
  background: var(--t1); color: rgba(255,255,255,.9);
  font-size: 13px; font-weight: 500;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  animation: slide-right .2s cubic-bezier(.4,0,.2,1);
  border-left: 3px solid var(--sky);
  max-width: 320px;
}
.toast.ok  { border-left-color: var(--emerald); }
.toast.err { border-left-color: var(--rose); }

/* ── 21. Forms ────────────────────────────────────────────────── */
.form-field { margin-bottom: 16px; }
.form-label { font-size: 12px; font-weight: 700; color: var(--t2); margin-bottom: 6px; display: block; letter-spacing: -.1px; }
.input, .select, .textarea {
  width: 100%;
  background: rgba(15,23,42,.03);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  font-size: 13px; color: var(--t1);
  transition: all var(--tr);
}
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--sky-d); background: #fff; box-shadow: 0 0 0 4px rgba(56,189,248,.1); }
.input-mono { font-family: var(--mono); }

/* ── 22. Command Palette ──────────────────────────────────────── */
.cp-overlay { position: fixed; inset: 0; z-index: 2000; background: rgba(10,22,40,.5); backdrop-filter: blur(10px); display: flex; align-items: flex-start; justify-content: center; padding-top: 110px; }
.cp-box { width: 580px; max-width: 92vw; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); overflow: hidden; animation: modal-in .18s cubic-bezier(.4,0,.2,1); }
.cp-input-wrap { display: flex; align-items: center; gap: 10px; padding: 16px 20px; border-bottom: 1px solid var(--border-l); }
.cp-icon { font-size: 18px; }
.cp-input { flex: 1; border: none; background: none; font-size: 16px; color: var(--t1); font-weight: 500; }
.cp-input:focus { outline: none; }
.cp-kbd { font-size: 10px; font-weight: 700; color: var(--t4); padding: 2px 7px; border-radius: 5px; background: rgba(15,23,42,.06); border: 1px solid var(--border); }
.cp-list { max-height: 380px; overflow-y: auto; }
.cp-item { display: flex; align-items: center; gap: 12px; padding: 11px 20px; font-size: 13px; color: var(--t2); cursor: pointer; transition: background var(--tr); }
.cp-item:hover, .cp-item.sel { background: rgba(56,189,248,.06); color: var(--sky-dd); }
.cp-footer { display: flex; align-items: center; gap: 12px; padding: 9px 20px; border-top: 1px solid var(--border-l); background: rgba(15,23,42,.02); }
.cp-footer-hint { display: flex; align-items: center; gap: 4px; font-size: 11px; color: var(--t4); }

/* ── 23. Empty states ─────────────────────────────────────────── */
.empty { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 60px 20px; text-align: center; }
.empty-ico   { font-size: 42px; margin-bottom: 14px; opacity: .5; }
.empty-title { font-size: 15px; font-weight: 700; color: var(--t2); margin-bottom: 6px; }
.empty-sub   { font-size: 13px; color: var(--t4); max-width: 280px; line-height: 1.6; }

/* ── 24. Misc ─────────────────────────────────────────────────── */
.refresh-bar { position: fixed; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, var(--sky-d), var(--cyan)); z-index: 9000; transform: scaleX(0); transform-origin: left; transition: transform .4s ease; pointer-events: none; }
.refresh-bar.loading { transform: scaleX(.6); }
.refresh-bar.done { transform: scaleX(1); transition: transform .2s ease; }

.donut-wrap   { display: flex; align-items: center; }
.donut-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.donut-val    { font-size: 20px; font-weight: 900; color: var(--t1); }
.donut-lbl    { font-size: 10px; color: var(--t4); }
.chart-legend { display: flex; flex-direction: column; gap: 9px; }
.legend-item  { display: flex; align-items: center; gap: 7px; font-size: 12px; color: var(--t2); }
.legend-dot   { width: 10px; height: 10px; border-radius: 3px; flex-shrink: 0; }
.legend-pct   { margin-left: auto; font-weight: 800; font-size: 13px; color: var(--t1); }

.grid-2   { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-bottom: 20px; }

/* Sidebar overlay (mobile) */
.sidebar-overlay { display: none; position: fixed; inset: 0; z-index: 190; background: rgba(10,22,40,.5); backdrop-filter: blur(4px); opacity: 0; transition: opacity var(--tr-m); }

/* Animations */
@keyframes fade-in   { from{opacity:0}                                      to{opacity:1} }
@keyframes slide-up  { from{opacity:0;transform:translateY(12px)}           to{opacity:1;transform:none} }
@keyframes slide-right{ from{opacity:0;transform:translateX(20px)}          to{opacity:1;transform:none} }
@keyframes modal-in  { from{opacity:0;transform:translateY(16px) scale(.97)} to{opacity:1;transform:none} }

/* ── 25. Responsive ───────────────────────────────────────────── */
@media (max-width: 1200px) {
  .db-row1 { grid-template-columns: 1fr; }
}
@media (max-width: 1024px) {
  .kpi-grid { grid-template-columns: repeat(2,1fr); }
  .db-row2  { grid-template-columns: 1fr 1fr; }
  .db-row2 > *:last-child { grid-column: 1/-1; }
}
@media (max-width: 768px) {
  :root { --sb-w: 0px; }
  .sidebar { transform: translateX(-260px); width: 260px; }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay { display: block; }
  .topbar { left: 0; }
  .main { margin-left: 0; }
  .tb-hamburger { display: flex; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .kanban   { grid-template-columns: 1fr; }
  .db-row2, .db-row3 { grid-template-columns: 1fr; }
  .main-inner { padding: 16px; }
}
@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .device-grid { grid-template-columns: 1fr; }
}