/* ============ RESET ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0a0e17;
  --bg-2: #0f1420;
  --panel: #121826;
  --panel-2: #161d2e;
  --border: #1e2740;
  --border-2: #29334d;
  --text: #e6ecf5;
  --text-dim: #8a95ad;
  --text-mute: #5a657d;
  --primary: #2563eb;
  --primary-dim: #1d4ed8;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ============ APP LAYOUT ============ */
.app {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

/* ============ SIDEBAR ============ */
.sidebar {
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dim));
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  color: white;
  letter-spacing: 0.5px;
}

.brand-text { display: flex; flex-direction: column; }
.brand-name { font-weight: 600; font-size: 14px; color: var(--text); }
.brand-sub { font-size: 11px; color: var(--text-mute); letter-spacing: 0.3px; }

.nav { display: flex; flex-direction: column; gap: 2px; }

.nav-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-mute);
  padding: 0 10px 8px;
  font-weight: 600;
}

.nav-item {
  padding: 9px 12px;
  border-radius: 5px;
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  border-left: 2px solid transparent;
}

.nav-item:hover { background: var(--panel); color: var(--text); }
.nav-item.active {
  background: var(--panel);
  color: var(--text);
  border-left-color: var(--primary);
}

.sidebar-foot {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.status-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.dot {
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.version {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--text-mute);
  letter-spacing: 0.5px;
}

/* ============ MAIN ============ */
.main { padding: 28px 32px; overflow-x: hidden; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.topbar h1 { font-size: 20px; font-weight: 600; letter-spacing: -0.3px; }
.page-sub { font-size: 12px; color: var(--text-mute); margin-top: 2px; }

.topbar-right { display: flex; align-items: center; gap: 12px; }

.icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 5px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 15px;
  cursor: pointer;
  transition: all 0.15s;
}

.icon-btn:hover { background: var(--panel-2); color: var(--text); }

.avatar {
  width: 34px;
  height: 34px;
  border-radius: 5px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dim));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  color: white;
}

/* ============ SECTIONS ============ */
.section { display: none; }
.section.active { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ KPI GRID ============ */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.kpi {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 18px 20px;
  transition: border-color 0.15s;
}

.kpi:hover { border-color: var(--border-2); }

.kpi-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-mute);
  font-weight: 500;
  margin-bottom: 10px;
}

.kpi-value {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 26px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 8px;
}

.kpi-muted { color: var(--text-mute); font-size: 18px; margin-left: 2px; }

.kpi-foot {
  font-size: 11px;
  color: var(--text-mute);
  font-family: 'IBM Plex Mono', monospace;
}

.kpi-foot.warn { color: var(--warning); }

/* ============ PANELS ============ */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.panel-head h2 { font-size: 13px; font-weight: 600; letter-spacing: 0.2px; }

.tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--text-dim);
  background: var(--bg-2);
  padding: 3px 8px;
  border-radius: 3px;
  border: 1px solid var(--border);
  letter-spacing: 0.3px;
}

.panel-body { padding: 20px; height: 300px; position: relative; }

/* ============ PREDICT ============ */
.predict-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px 24px;
  padding: 24px 20px;
}

.field { display: flex; flex-direction: column; gap: 8px; }

.field label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-mute);
  font-weight: 500;
}

.field-val {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--text);
  font-weight: 500;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 3px;
  background: var(--border-2);
  border-radius: 2px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--panel);
  box-shadow: 0 0 0 1px var(--primary);
  transition: transform 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }

.btn-primary {
  display: block;
  width: calc(100% - 40px);
  margin: 0 20px 20px;
  padding: 12px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.3px;
  cursor: pointer;
  transition: background 0.15s;
  font-family: inherit;
}

.btn-primary:hover { background: var(--primary-dim); }
.btn-primary:disabled { opacity: 0.6; cursor: wait; }

.result {
  margin: 0 20px 20px;
  padding: 20px 24px;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: 6px;
  text-align: center;
}

.result-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-mute);
  margin-bottom: 8px;
}

.result-value {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 36px;
  font-weight: 500;
  color: var(--primary);
  letter-spacing: -1.5px;
  margin-bottom: 6px;
}

.result-status {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

/* ============ TABLES ============ */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  text-align: left;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-mute);
  font-weight: 600;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}

tbody td {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--text-dim);
}

tbody td:first-child { color: var(--text); font-weight: 500; }
tbody tr:hover td { background: var(--panel-2); }
tbody tr:last-child td { border-bottom: none; }

.empty {
  padding: 40px;
  text-align: center;
  color: var(--text-mute);
  font-size: 12px;
}

.badge-sev {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.sev-high { background: rgba(239,68,68,0.12); color: #ef4444; }
.sev-med  { background: rgba(245,158,11,0.12); color: #f59e0b; }
.sev-low  { background: rgba(16,185,129,0.12); color: #10b981; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1100px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .panel-grid { grid-template-columns: 1fr; }
  .predict-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 800px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
  .nav { flex-direction: row; overflow-x: auto; }
  .kpi-grid, .predict-grid { grid-template-columns: 1fr; }
  .main { padding: 20px; }
}