:root {
  --bg-primary: #0b1120;
  --bg-card: #151e32;
  --bg-hover: #1e293b;
  --border: #1e293b;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;
  --sidebar-width: 260px;
  --radius: 14px;
  --shadow: 0 12px 24px rgba(0, 0, 0, 0.18);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: Inter, sans-serif; background: var(--bg-primary); color: var(--text-primary); }
body { min-height: 100vh; }
button, input, select, textarea { font: inherit; }
input, select, textarea {
  width: 100%;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}
textarea { resize: vertical; }
a { color: inherit; text-decoration: none; }
.mono { font-family: "JetBrains Mono", monospace; }
.hidden { display: none !important; }

.app-shell { display: grid; grid-template-columns: var(--sidebar-width) 1fr; min-height: 100vh; }
.sidebar {
  border-right: 1px solid var(--border);
  background: #0a1020;
  padding: 18px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.brand-block { margin-bottom: 20px; }
.brand-title { font-size: 28px; font-weight: 800; }
.brand-subtitle { color: var(--text-secondary); margin-top: 4px; }
.nav-list { display: grid; gap: 8px; margin-bottom: 18px; }
.nav-link {
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
}
.nav-link:hover, .nav-link.active {
  background: var(--bg-hover);
  border-color: var(--border);
  color: var(--text-primary);
}
.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}
.sidebar-card h3 { margin: 0 0 12px; font-size: 16px; }
.stack-form { display: grid; gap: 12px; }
.stack-form label span { display: block; color: var(--text-secondary); font-size: 12px; margin-bottom: 6px; }

.main-shell { min-width: 0; display: flex; flex-direction: column; }
.topbar {
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 17, 32, 0.94);
  backdrop-filter: blur(8px);
}
.topbar h1 { margin: 0; font-size: 30px; }
.topbar p { margin: 8px 0 0; color: var(--text-secondary); max-width: 780px; }
.topbar-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }

.btn {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
  color: #fff;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-accent { background: var(--accent); }
.btn-success { background: var(--success); }
.btn-warning { background: var(--warning); color: #111827; }
.btn-danger { background: var(--danger); }
.btn-info { background: var(--info); color: #082f49; }
.btn-muted { background: var(--bg-hover); color: var(--text-primary); }
.icon-btn { border: 0; background: transparent; color: var(--text-secondary); cursor: pointer; font-weight: 700; }

.content { padding: 24px; display: grid; gap: 24px; }
.content-section { display: grid; gap: 16px; }
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 18px 0;
}
.panel-header h2 { margin: 0; font-size: 20px; }
.panel-subtitle { color: var(--text-secondary); margin-bottom: 12px; }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.kpi-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.kpi-label { color: var(--text-secondary); font-size: 13px; }
.kpi-value { font-size: 36px; font-weight: 800; margin-top: 10px; }
.kpi-success { box-shadow: inset 0 0 0 1px rgba(34, 197, 94, 0.35); }
.kpi-danger { box-shadow: inset 0 0 0 1px rgba(239, 68, 68, 0.35); }
.kpi-warning { box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.35); }
.kpi-info { box-shadow: inset 0 0 0 1px rgba(6, 182, 212, 0.35); }

.summary-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 16px;
}

.accordion-list { padding: 18px; display: grid; gap: 12px; }
.accordion-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: rgba(255,255,255,0.01);
}
.accordion-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  cursor: pointer;
}
.accordion-title { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
.accordion-item.open .accordion-body { max-height: 320px; }
.accordion-grid {
  padding: 0 16px 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 20px;
}
.accordion-grid .row-label { color: var(--text-secondary); font-size: 12px; }
.accordion-actions { display: flex; gap: 8px; padding-top: 8px; }

.health-summary { padding: 18px; display: grid; gap: 12px; }
.health-chip {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  background: rgba(255,255,255,0.01);
}

.table-wrap { overflow: auto; padding: 18px; }
.data-table { width: 100%; border-collapse: collapse; min-width: 800px; }
.data-table th, .data-table td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.data-table th { color: var(--text-secondary); font-size: 12px; text-transform: uppercase; }
.sticky-head thead th { position: sticky; top: 0; background: var(--bg-card); }
.click-row { cursor: pointer; }
.click-row:hover { background: rgba(255,255,255,0.03); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 700;
}
.badge-success { background: rgba(34, 197, 94, 0.16); color: #86efac; }
.badge-danger { background: rgba(239, 68, 68, 0.16); color: #fca5a5; }
.badge-warning { background: rgba(245, 158, 11, 0.16); color: #fcd34d; }
.badge-info { background: rgba(6, 182, 212, 0.16); color: #67e8f9; }
.badge-muted { background: rgba(148, 163, 184, 0.16); color: #cbd5e1; }

.pulse { animation: pulse 1.3s infinite; }
@keyframes pulse {
  0% { opacity: 0.65; }
  50% { opacity: 1; }
  100% { opacity: 0.65; }
}

.card-grid {
  padding: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.mini-card, .route-card, .audio-card, .group-card, .tool-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  background: rgba(255,255,255,0.015);
}
.mini-card h3, .route-card h3, .audio-card h3, .group-card h3, .tool-card h3 { margin: 0 0 10px; }

.groups-grid {
  padding: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.group-card.drop-target-active, .unassigned-pool.drop-target-active { outline: 2px dashed var(--accent); box-shadow: 0 0 0 4px rgba(59,130,246,0.1); }
.group-header { display: flex; justify-content: space-between; gap: 12px; align-items: center; margin-bottom: 10px; }
.device-chip {
  border: 1px solid var(--border);
  background: var(--bg-hover);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 8px;
  cursor: grab;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}
.device-chip.dragging { opacity: 0.5; border-style: dashed; }
.chip-meta { font-size: 12px; color: var(--text-secondary); }
.drag-handle { font-family: "JetBrains Mono", monospace; color: var(--text-muted); }
.unassigned-pool {
  padding: 18px;
  margin: 0 18px 18px;
  border: 2px dashed var(--accent);
  border-radius: 12px;
  color: var(--text-secondary);
  text-align: center;
}

.sequence-list, .policy-list {
  padding: 18px;
  display: grid;
  gap: 12px;
}
.sequence-item, .policy-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  background: rgba(255,255,255,0.015);
}
.sequence-item[draggable="true"], .policy-row[draggable="true"] { cursor: grab; }
.rank-badge {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bg-hover);
  display: grid;
  place-items: center;
  font-weight: 700;
}

.softphone-grid { padding: 18px; display: grid; grid-template-columns: 420px 1fr; gap: 18px; }
.softphone-form { display: grid; gap: 12px; }
.softphone-form label span { display: block; margin-bottom: 6px; color: var(--text-secondary); font-size: 12px; }
.softphone-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.softphone-log { min-width: 0; }
.dtmf-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.dtmf-grid button { min-height: 48px; }

.asterisk-grid { padding: 18px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.stack-actions { display: grid; gap: 8px; }
.terminal-output {
  background: #09111a;
  color: #c3f7d9;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  font-family: "JetBrains Mono", monospace;
  white-space: pre-wrap;
  overflow: auto;
  min-height: 180px;
}
.large-terminal { margin: 0 18px 18px; min-height: 260px; }

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 40;
}
.device-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 400px;
  max-width: 100%;
  height: 100vh;
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  z-index: 41;
  display: flex;
  flex-direction: column;
}
.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}
.drawer-content { padding: 16px; overflow: auto; display: grid; gap: 12px; }
.kv { display: grid; grid-template-columns: 120px 1fr; gap: 12px; }
.kv div:first-child { color: var(--text-secondary); }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: grid;
  place-items: center;
  z-index: 60;
  padding: 18px;
}
.modal-card {
  width: min(760px, 100%);
  max-height: 90vh;
  overflow: auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  animation: modal-in 0.18s ease;
}
@keyframes modal-in {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}
.modal-body { padding: 18px; display: grid; gap: 14px; }
.modal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.modal-grid label span { display: block; margin-bottom: 6px; color: var(--text-secondary); font-size: 12px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

.toast-root {
  position: fixed;
  bottom: 16px;
  right: 16px;
  z-index: 80;
  display: grid;
  gap: 10px;
}
.toast {
  min-width: 260px;
  max-width: 360px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  padding: 12px 14px;
  box-shadow: var(--shadow);
}

.empty-state {
  padding: 18px;
  color: var(--text-secondary);
}

@media (max-width: 1280px) {
  .kpi-grid, .asterisk-grid, .groups-grid, .card-grid, .summary-grid, .softphone-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 1024px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: relative;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
  .topbar { position: relative; }
}

@media (max-width: 820px) {
  .kpi-grid, .asterisk-grid, .groups-grid, .card-grid, .summary-grid, .softphone-grid, .modal-grid {
    grid-template-columns: 1fr;
  }
  .topbar { flex-direction: column; }
  .topbar-actions { justify-content: flex-start; }
  .content { padding: 16px; }
  .data-table { min-width: 720px; }
}