@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ──────────────────────────────────────────────
   CSS Custom Properties
────────────────────────────────────────────── */
:root {
  --bg-base:        #0a0e1a;
  --bg-surface:     #0f1528;
  --bg-card:        rgba(255,255,255,0.04);
  --bg-card-hover:  rgba(255,255,255,0.07);
  --border-subtle:  rgba(255,255,255,0.07);
  --border-bright:  rgba(255,255,255,0.14);
  --glass-blur:     blur(16px);

  --accent:         #3b82f6;
  --accent-dim:     rgba(59,130,246,0.15);
  --accent-glow:    0 0 30px rgba(59,130,246,0.25);

  --success:        #22c55e;
  --success-dim:    rgba(34,197,94,0.15);
  --warning:        #f59e0b;
  --warning-dim:    rgba(245,158,11,0.15);
  --danger:         #ef4444;
  --danger-dim:     rgba(239,68,68,0.15);
  --info:           #8b5cf6;
  --info-dim:       rgba(139,92,246,0.15);

  --text-primary:   #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted:     #4b5563;
  --text-dim:       #1e293b;

  --radius-sm:      6px;
  --radius-md:      12px;
  --radius-lg:      18px;
  --radius-xl:      24px;

  --shadow-card:    0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow-success: 0 0 20px rgba(34,197,94,0.2);
  --shadow-glow-danger:  0 0 20px rgba(239,68,68,0.2);

  --transition-fast:   0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow:   0.5s ease;
}

/* ──────────────────────────────────────────────
   Reset & Base
────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ──────────────────────────────────────────────
   Background Grid Effect
────────────────────────────────────────────── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* ──────────────────────────────────────────────
   Navigation
────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem;
  height: 64px;
  background: rgba(10,14,26,0.85);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.1rem; font-weight: 700;
  text-decoration: none;
  color: transparent;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  -webkit-background-clip: text; background-clip: text;
}
.nav-logo span { font-size: 1.4rem; }

.nav-center {
  display: flex; align-items: center; gap: 1.5rem;
}

.nav-clock {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.nav-right {
  display: flex; align-items: center; gap: 0.75rem;
}

.nav-badge {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.8rem; font-weight: 600;
  border: 1px solid;
  transition: var(--transition-normal);
}
.nav-badge.online { background: var(--success-dim); border-color: rgba(34,197,94,0.3); color: var(--success); }
.nav-badge.alert  { background: var(--danger-dim); border-color: rgba(239,68,68,0.3); color: var(--danger); cursor: pointer; }
.nav-badge.alert:hover { background: rgba(239,68,68,0.25); }

.nav-actions { display: flex; gap: 8px; }

/* ──────────────────────────────────────────────
   Buttons
────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem; font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent); color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover { background: #2563eb; box-shadow: var(--accent-glow); }

.btn-ghost {
  background: var(--bg-card); color: var(--text-secondary);
  border-color: var(--border-subtle);
}
.btn-ghost:hover { background: var(--bg-card-hover); color: var(--text-primary); border-color: var(--border-bright); }

.btn-danger-ghost { background: var(--danger-dim); color: var(--danger); border-color: rgba(239,68,68,0.3); }
.btn-danger-ghost:hover { background: rgba(239,68,68,0.25); }

.btn-sm { padding: 5px 10px; font-size: 0.75rem; }
.btn-icon { padding: 8px; width: 36px; height: 36px; justify-content: center; }

/* ──────────────────────────────────────────────
   Main Layout
────────────────────────────────────────────── */
.main { position: relative; z-index: 1; padding: 1.5rem 2rem; max-width: 1600px; margin: 0 auto; }

/* ──────────────────────────────────────────────
   KPI Strip
────────────────────────────────────────────── */
.kpi-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  backdrop-filter: var(--glass-blur);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.kpi-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--kpi-color, var(--accent)), transparent);
  opacity: 0.6;
}
.kpi-card:hover { background: var(--bg-card-hover); transform: translateY(-2px); box-shadow: var(--shadow-card); }
.kpi-card.active {
  background: var(--bg-card-hover);
  border-color: var(--kpi-color);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.05);
}

.kpi-label { font-size: 0.75rem; font-weight: 500; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.5rem; }
.kpi-value { font-size: 2rem; font-weight: 800; color: var(--text-primary); line-height: 1; margin-bottom: 0.25rem; }
.kpi-sub { font-size: 0.75rem; color: var(--text-muted); }
.kpi-icon { position: absolute; right: 1.25rem; top: 1.25rem; font-size: 1.6rem; opacity: 0.3; }

/* ──────────────────────────────────────────────
   Section Header
────────────────────────────────────────────── */
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem;
}
.section-title { font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.08em; }
.section-actions { display: flex; gap: 8px; align-items: center; }

/* ──────────────────────────────────────────────
   Device Grid
────────────────────────────────────────────── */
.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1rem;
}

/* ──────────────────────────────────────────────
   Device Card
────────────────────────────────────────────── */
.device-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  backdrop-filter: var(--glass-blur);
  text-decoration: none;
  color: inherit;
  display: block;
}
.device-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-bright);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}
.device-card.status-online  { border-top: 2px solid var(--success); }
.device-card.status-offline { border-top: 2px solid var(--text-muted); opacity: 0.7; }
.device-card.status-warning { border-top: 2px solid var(--warning); }
.device-card.status-critical{ border-top: 2px solid var(--danger); }

/* Card Header */
.card-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 0.9rem;
}
.card-header-left { flex: 1; min-width: 0; }
.card-device-name {
  font-size: 0.95rem; font-weight: 700; color: var(--text-primary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-bottom: 2px;
}
.card-location { font-size: 0.75rem; color: var(--text-muted); }
.copy-ip-btn {
  font-size: 0.75rem;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s, transform 0.2s;
  user-select: none;
  display: inline-flex;
  align-items: center;
}
.copy-ip-btn:hover {
  opacity: 1;
  transform: scale(1.15);
}


.card-status-pill {
  display: flex; align-items: center; gap: 5px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  flex-shrink: 0;
}
.pill-online  { background: var(--success-dim); color: var(--success); }
.pill-offline { background: rgba(100,116,139,0.15); color: var(--text-muted); }
.pill-warning { background: var(--warning-dim); color: var(--warning); }
.pill-critical{ background: var(--danger-dim); color: var(--danger); }

/* Pulse dot */
.pulse-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
}
.pulse-dot.online  { background: var(--success); animation: pulse-green 2s infinite; }
.pulse-dot.offline { background: var(--text-muted); }
.pulse-dot.warning { background: var(--warning); animation: pulse-amber 2s infinite; }
.pulse-dot.critical{ background: var(--danger); animation: pulse-red 1s infinite; }

@keyframes pulse-green {
  0%,100% { box-shadow: 0 0 0 0 rgba(34,197,94,0.5); }
  50%      { box-shadow: 0 0 0 5px rgba(34,197,94,0); }
}
@keyframes pulse-amber {
  0%,100% { box-shadow: 0 0 0 0 rgba(245,158,11,0.5); }
  50%      { box-shadow: 0 0 0 5px rgba(245,158,11,0); }
}
@keyframes pulse-red {
  0%,100% { box-shadow: 0 0 0 0 rgba(239,68,68,0.7); }
  50%      { box-shadow: 0 0 0 6px rgba(239,68,68,0); }
}

/* Last seen */
.card-last-seen {
  font-size: 0.72rem; color: var(--text-muted);
  margin-bottom: 0.9rem;
}

/* Quick metrics row */
.quick-metrics {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}
.metric-chip {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  text-align: center;
}
.metric-chip-icon { font-size: 0.85rem; margin-bottom: 1px; }
.metric-chip-value {
  font-size: 0.75rem; font-weight: 700; color: var(--text-primary);
  transition: color var(--transition-normal);
}
.metric-chip-label { font-size: 0.6rem; color: var(--text-muted); }
.metric-chip.danger  .metric-chip-value { color: var(--danger); }
.metric-chip.warning .metric-chip-value { color: var(--warning); }
.metric-chip.success .metric-chip-value { color: var(--success); }

/* Speed bars */
.speed-bars { margin-bottom: 0.9rem; }
.speed-bar-row {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 4px; font-size: 0.72rem;
}
.speed-bar-label { color: var(--text-muted); width: 16px; text-align: center; font-size: 0.8rem; }
.speed-bar-track {
  flex: 1; height: 4px;
  background: var(--border-subtle);
  border-radius: 2px; overflow: hidden;
}
.speed-bar-fill {
  height: 100%; border-radius: 2px;
  transition: width var(--transition-slow);
}
.speed-bar-fill.upload   { background: linear-gradient(90deg, #3b82f6, #8b5cf6); }
.speed-bar-fill.download { background: linear-gradient(90deg, #22c55e, #06b6d4); }
.speed-bar-value { font-size: 0.7rem; color: var(--text-secondary); width: 70px; text-align: right; font-family: 'JetBrains Mono', monospace; }

/* File pipeline */
.file-pipeline {
  display: flex; align-items: center; gap: 4px;
  font-size: 0.72rem;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  margin-bottom: 0.75rem;
}
.pipeline-step {
  flex: 1; text-align: center;
}
.pipeline-step-icon { font-size: 0.85rem; }
.pipeline-step-value { font-weight: 700; color: var(--text-primary); font-size: 0.8rem; }
.pipeline-step-label { color: var(--text-muted); font-size: 0.62rem; }
.pipeline-arrow { color: var(--text-muted); font-size: 0.7rem; flex-shrink: 0; }
.pipeline-active { color: var(--accent); animation: blink 1s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }

/* Alert badge on card */
.card-alerts-bar {
  display: flex; align-items: center; gap: 6px;
  flex-wrap: wrap;
}
.alert-tag {
  display: flex; align-items: center; gap: 4px;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.68rem; font-weight: 600;
}
.alert-tag.critical { background: var(--danger-dim); color: var(--danger); }
.alert-tag.warning  { background: var(--warning-dim); color: var(--warning); }
.alert-tag.info     { background: var(--info-dim); color: var(--info); }

/* ──────────────────────────────────────────────
   Alert Panel
────────────────────────────────────────────── */
.alert-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  margin-top: 1.5rem;
  backdrop-filter: var(--glass-blur);
  overflow: hidden;
}
.alert-panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  cursor: pointer;
}
.alert-panel-title { font-size: 0.82rem; font-weight: 600; color: var(--text-secondary); display: flex; align-items: center; gap: 8px; }
.alert-panel-body { padding: 0.5rem; max-height: 300px; overflow-y: auto; }
.alert-item {
  display: flex; align-items: center; gap: 10px;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  margin-bottom: 3px;
  transition: var(--transition-fast);
  cursor: pointer;
}
.alert-item:hover { background: var(--bg-card-hover); }
.alert-item-icon { font-size: 1rem; flex-shrink: 0; }
.alert-item-content { flex: 1; min-width: 0; }
.alert-item-device { font-size: 0.78rem; font-weight: 600; color: var(--text-primary); }
.alert-item-msg { font-size: 0.72rem; color: var(--text-secondary); }
.alert-item-time { font-size: 0.68rem; color: var(--text-muted); flex-shrink: 0; }

/* ──────────────────────────────────────────────
   Toast Notifications
────────────────────────────────────────────── */
.toast-container {
  position: fixed; top: 80px; right: 1.5rem;
  z-index: 9999;
  display: flex; flex-direction: column; gap: 8px;
  pointer-events: none;
}
.toast {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid;
  backdrop-filter: var(--glass-blur);
  min-width: 280px; max-width: 380px;
  pointer-events: all;
  animation: slideInRight 0.3s ease;
  box-shadow: var(--shadow-card);
}
.toast.toast-exit { animation: slideOutRight 0.3s ease forwards; }
.toast.critical { background: rgba(239,68,68,0.12); border-color: rgba(239,68,68,0.3); }
.toast.warning  { background: rgba(245,158,11,0.12); border-color: rgba(245,158,11,0.3); }
.toast-icon { font-size: 1rem; flex-shrink: 0; margin-top: 1px; }
.toast-body { flex: 1; }
.toast-title { font-size: 0.8rem; font-weight: 700; margin-bottom: 2px; }
.toast.critical .toast-title { color: var(--danger); }
.toast.warning .toast-title { color: var(--warning); }
.toast-msg { font-size: 0.73rem; color: var(--text-secondary); }

@keyframes slideInRight {
  from { transform: translateX(120%); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}
@keyframes slideOutRight {
  from { transform: translateX(0); opacity: 1; }
  to   { transform: translateX(120%); opacity: 0; }
}

/* ──────────────────────────────────────────────
   Empty / Loading States
────────────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 4rem 2rem;
  color: var(--text-muted);
}
.empty-state-icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.4; }
.empty-state-title { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--text-secondary); }
.empty-state-desc { font-size: 0.85rem; margin-bottom: 1.5rem; }

/* Skeleton shimmer */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, rgba(255,255,255,0.06) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* ──────────────────────────────────────────────
   DEVICE DETAIL PAGE
────────────────────────────────────────────── */
.detail-header {
  display: flex; align-items: flex-start; gap: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  backdrop-filter: var(--glass-blur);
  position: relative; overflow: hidden;
}
.detail-header::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--info));
}
.detail-header-main { flex: 1; }
.detail-device-name { font-size: 1.6rem; font-weight: 800; margin-bottom: 4px; }
.detail-location { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 0.75rem; }
.detail-meta { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.detail-meta-item { display: flex; align-items: center; gap: 5px; font-size: 0.8rem; color: var(--text-muted); }
.version-badge { background: var(--accent-dim); border: 1px solid rgba(59,130,246,0.3); color: var(--accent); border-radius: 4px; padding: 2px 8px; font-size: 0.72rem; font-weight: 600; font-family: 'JetBrains Mono', monospace; }
.detail-header-right { display: flex; flex-direction: column; align-items: flex-end; gap: 0.75rem; }

.status-badge-lg {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  border: 1px solid;
}
.status-badge-lg.online  { background: var(--success-dim); border-color: rgba(34,197,94,0.3); color: var(--success); }
.status-badge-lg.offline { background: rgba(100,116,139,0.1); border-color: rgba(100,116,139,0.2); color: var(--text-muted); }
.status-badge-lg.warning { background: var(--warning-dim); border-color: rgba(245,158,11,0.3); color: var(--warning); }
.status-badge-lg.critical{ background: var(--danger-dim); border-color: rgba(239,68,68,0.3); color: var(--danger); }

/* Panels grid */
.panels-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.panel {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  backdrop-filter: var(--glass-blur);
}
.panel-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-weight: 700; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.08em;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}
.panel-title-icon { font-size: 1rem; }

/* Metric rows inside panels */
.metric-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 0;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  font-size: 0.82rem;
}
.metric-row:last-child { border-bottom: none; }
.metric-row-label { color: var(--text-muted); }
.metric-row-value { font-weight: 600; color: var(--text-primary); font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; }
.metric-row-value.danger  { color: var(--danger); }
.metric-row-value.warning { color: var(--warning); }
.metric-row-value.success { color: var(--success); }

/* Gauges */
.gauges-row { display: flex; gap: 1rem; margin-bottom: 1rem; }
.gauge-wrap { flex: 1; text-align: center; }
.gauge-label { font-size: 0.72rem; color: var(--text-muted); margin-top: 4px; }
.gauge-canvas { max-width: 100px; max-height: 100px; }

/* Voltage badge */
.voltage-badge {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px;
  border-radius: var(--radius-sm);
  font-weight: 700; font-size: 0.9rem;
  margin-top: 0.75rem;
  border: 1px solid;
}
.voltage-badge.ok  { background: var(--success-dim); border-color: rgba(34,197,94,0.3); color: var(--success); }
.voltage-badge.low { background: var(--danger-dim); border-color: rgba(239,68,68,0.3); color: var(--danger); animation: pulse-red 1s infinite; }

/* Three-stage pipeline (detail) */
.pipeline-detail {
  display: flex; align-items: stretch; gap: 0;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 0.75rem;
}
.pipeline-box {
  flex: 1; text-align: center; padding: 12px;
  border-right: 1px solid var(--border-subtle);
  position: relative;
}
.pipeline-box:last-child { border-right: none; }
.pipeline-box-icon { font-size: 1.4rem; margin-bottom: 4px; }
.pipeline-box-count { font-size: 1.4rem; font-weight: 800; color: var(--text-primary); }
.pipeline-box-label { font-size: 0.68rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.pipeline-connector {
  display: flex; align-items: center; justify-content: center;
  width: 30px; flex-shrink: 0;
  color: var(--text-muted); font-size: 1rem;
}

/* Upload dots */
.upload-dots { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 0.5rem; }
.upload-dot {
  width: 14px; height: 14px; border-radius: 50%;
}
.upload-dot.success { background: var(--success); }
.upload-dot.failed  { background: var(--danger); }
.upload-dot[title] { cursor: help; }

/* Speed comparison bar */
.speed-compare { margin: 0.75rem 0; }
.speed-compare-label { display: flex; justify-content: space-between; font-size: 0.72rem; margin-bottom: 4px; }
.speed-compare-track { height: 8px; background: var(--border-subtle); border-radius: 4px; overflow: hidden; position: relative; }
.speed-compare-internet { height: 100%; background: var(--success-dim); border-radius: 4px; position: absolute; top: 0; left: 0; transition: width var(--transition-slow); }
.speed-compare-effective { height: 100%; background: linear-gradient(90deg, var(--accent), var(--info)); border-radius: 4px; position: absolute; top: 0; left: 0; transition: width var(--transition-slow); }

/* Login table */
.login-table { width: 100%; border-collapse: collapse; font-size: 0.75rem; }
.login-table th { color: var(--text-muted); font-weight: 500; padding: 5px 6px; text-align: left; border-bottom: 1px solid var(--border-subtle); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.06em; }
.login-table td { padding: 5px 6px; border-bottom: 1px solid rgba(255,255,255,0.03); font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; }
.login-table tr.success-row td { color: var(--success); }
.login-table tr.fail-row td { color: var(--danger); }
.login-table tr:last-child td { border-bottom: none; }

/* Live timer */
.live-timer {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.6rem; font-weight: 700;
  color: var(--accent);
  text-align: center; padding: 0.75rem;
  background: var(--accent-dim);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
}
.live-timer.disconnected { color: var(--text-muted); background: rgba(255,255,255,0.02); border-color: var(--border-subtle); }

/* ──────────────────────────────────────────────
   History Chart Panel
────────────────────────────────────────────── */
.history-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  backdrop-filter: var(--glass-blur);
}
.chart-toggle-bar {
  display: flex; gap: 6px; flex-wrap: wrap;
  margin-bottom: 1rem;
}
.chart-toggle-btn {
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.75rem; font-weight: 600;
  border: 1px solid var(--border-subtle);
  background: transparent; color: var(--text-muted);
  cursor: pointer; transition: var(--transition-fast);
}
.chart-toggle-btn:hover { color: var(--text-primary); border-color: var(--border-bright); }
.chart-toggle-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ──────────────────────────────────────────────
   WS Status indicator
────────────────────────────────────────────── */
.ws-status {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.72rem; color: var(--text-muted);
}
.ws-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--text-muted); }
.ws-dot.connected { background: var(--success); animation: pulse-green 2s infinite; }
.ws-dot.reconnecting { background: var(--warning); animation: pulse-amber 1s infinite; }

/* ──────────────────────────────────────────────
   Monospace values
────────────────────────────────────────────── */
.mono { font-family: 'JetBrains Mono', monospace; }
.mono-lg { font-family: 'JetBrains Mono', monospace; font-size: 1.2rem; font-weight: 600; color: var(--text-primary); }

/* ──────────────────────────────────────────────
   Divider
────────────────────────────────────────────── */
.divider { height: 1px; background: var(--border-subtle); margin: 0.75rem 0; }

/* ──────────────────────────────────────────────
   Responsive
────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .kpi-strip { grid-template-columns: repeat(2, 1fr); }
  .panels-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .main { padding: 1rem; }
  .nav { padding: 0 1rem; }
  .nav-clock { display: none; }
  .device-grid { grid-template-columns: 1fr; }
  .kpi-strip { grid-template-columns: repeat(2, 1fr); }
  .detail-header { flex-direction: column; }
  .detail-header-right { align-items: flex-start; flex-direction: row; flex-wrap: wrap; }
}
@media (max-width: 480px) {
  .kpi-strip { grid-template-columns: 1fr; }
}

/* ──────────────────────────────────────────────
   Add/Delete Device UI Elements
   ────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  background: rgba(10, 14, 26, 0.75);
  backdrop-filter: var(--glass-blur);
  display: flex; justify-content: center; align-items: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-md);
  width: 90%; max-width: 420px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transform: scale(0.95);
  transition: transform 0.2s ease;
}
.modal-overlay.active .modal-card {
  transform: scale(1);
}
.modal-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.75rem;
}
.modal-title {
  font-size: 1.05rem; font-weight: 700;
  color: var(--text-primary);
}
.modal-close {
  background: none; border: none;
  color: var(--text-secondary);
  font-size: 1.3rem; cursor: pointer;
  line-height: 1;
  transition: var(--transition-fast);
}
.modal-close:hover {
  color: var(--text-primary);
}
.form-group {
  margin-bottom: 1rem;
}
.form-label {
  display: block;
  font-size: 0.78rem; font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}
.form-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 8px 12px;
  font-size: 0.85rem; font-family: inherit;
  outline: none;
  transition: var(--transition-fast);
}
.form-input:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.05);
}
.modal-footer {
  display: flex; justify-content: flex-end; gap: 8px;
  margin-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  padding-top: 1rem;
}
.card-delete-btn {
  background: none; border: none;
  color: var(--text-muted);
  font-size: 0.9rem; cursor: pointer;
  padding: 4px; border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition-fast);
}
.card-delete-btn:hover {
  color: var(--danger);
  background: var(--danger-dim);
}

/* ──────────────────────────────────────────────
   Hardware Plug-In Status on Grid Cards
   ────────────────────────────────────────────── */
.card-plugin-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 0.75rem;
}

.card-plugin-row {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 0.72rem;
  transition: all 0.2s ease;
}

.card-plugin-row.connected {
  border-color: rgba(34, 197, 94, 0.2);
  background: rgba(34, 197, 94, 0.02);
}

.card-plugin-row.disconnected {
  color: var(--text-muted);
  border-style: dashed;
}

.plugin-icon {
  font-size: 0.8rem;
  flex-shrink: 0;
}

.plugin-id {
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.card-plugin-row.disconnected .plugin-id {
  color: var(--text-muted);
  font-weight: normal;
}

.plugin-badge {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.plugin-badge.valid {
  background: var(--success-dim);
  color: var(--success);
}

.plugin-badge.invalid {
  background: var(--danger-dim);
  color: var(--danger);
}