:root {
  --orange: #FF6600;
  --orange-glow: rgba(255, 102, 0, 0.4);
  --blue: #007BFF;
  --blue-glow: rgba(0, 123, 255, 0.3);
  --green: #28A745;
  --green-glow: rgba(40, 167, 69, 0.3);
  --yellow: #FFC107;
  --red: #DC3545;

  --bg: #0D1117;
  --card: rgba(22, 27, 34, 0.6);
  --glass: rgba(33, 38, 45, 0.4);
  --border: rgba(240, 246, 252, 0.1);
  --text: #C9D1D9;
  --text-muted: #8B949E;
  --header-bg: rgba(13, 17, 23, 0.8);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg);
  background-image:
    radial-gradient(at 0% 0%, rgba(255, 102, 0, 0.05) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(0, 123, 255, 0.05) 0px, transparent 50%);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ---- LAYOUT ---- */
.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.header-logo img {
  height: 32px;
  filter: drop-shadow(0 0 8px var(--orange-glow));
}

.header-title {
  color: #fff;
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0;
}

.header-title span {
  color: var(--orange);
}

.header-nav {
  display: flex;
  gap: 12px;
}

.header-nav a,
.btn-pill {
  background: var(--glass);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.6rem 1.4rem;
  border-radius: 50px;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-nav a:hover,
.btn-pill:hover {
  background: rgba(255, 102, 0, 0.1);
  border-color: var(--orange);
  color: #fff;
  box-shadow: 0 0 15px var(--orange-glow);
}

.header-nav a.active,
.btn-pill.active {
  background: var(--orange);
  border-color: var(--orange);
  color: #fff;
  box-shadow: 0 0 20px var(--orange-glow);
}

/* ---- CARDS & DASHBOARD ---- */
.card {
  background: var(--card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1.8fr;
  gap: 1.5rem;
}

@media (max-width: 1100px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- GAUGES & METRICS ---- */
.gauge-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.gauges-row {
  display: flex;
  justify-content: space-around;
  gap: 1rem;
  margin-top: 1rem;
}

.gauge-item {
  text-align: center;
  position: relative;
  flex: 1;
}

.gauge-chart-wrap {
  position: relative;
  width: 100%;
  max-width: 220px;
  margin: 0 auto;
}

.gauge-value-center {
  position: absolute;
  top: 55%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.gauge-value-center .val {
  font-size: 2.8rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

.gauge-value-center .unit {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.sub-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.metric-pill {
  background: var(--glass);
  padding: 1.25rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  text-align: center;
  transition: transform 0.2s ease;
}

.metric-pill:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.05);
}

.metric-pill label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 6px;
  font-weight: 600;
}

.metric-pill .val {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
}

.metric-pill .unit {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: 2px;
}

/* ---- CHARTS ---- */
.chart-card {
  display: flex;
  flex-direction: column;
}

.chart-card canvas {
  max-height: 300px;
}

.charts-column {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.small-charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .small-charts-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- TEST BUTTON ---- */
.start-btn-wrap {
  text-align: center;
  margin-bottom: 2.5rem;
}

#startBtn {
  background: linear-gradient(135deg, var(--orange), #FF8C00);
  border: none;
  color: #fff;
  padding: 1.1rem 4rem;
  font-size: 1.25rem;
  font-weight: 700;
  border-radius: 50px;
  cursor: pointer;
  box-shadow: 0 0 25px var(--orange-glow);
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

#startBtn:hover:not(:disabled) {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 15px 35px var(--orange-glow);
}

#startBtn:disabled {
  opacity: 0.7;
  cursor: wait;
}

#startBtn.testing {
  background: #21262d;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
}

/* ---- TABLE ---- */
.table-wrap {
  overflow-x: auto;
  border-radius: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 1.25rem 1rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 1px solid var(--border);
}

tr:not(:last-child) td {
  border-bottom: 1px solid var(--border);
}

tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

td {
  padding: 1.25rem 1rem;
  color: var(--text);
  font-size: 0.95rem;
}

.badge {
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}

/* ---- BUFFERBLOAT RESULT CARD ---- */
.bb-critico {
  border-left: 4px solid var(--red);
}

.bb-atencao {
  border-left: 4px solid var(--yellow);
}

.bb-bom {
  border-left: 4px solid var(--green);
}

/* ---- PROGRESS BAR ---- */
.progress-container {
  padding: 0 20px;
  margin-top: -10px;
  margin-bottom: 20px;
}

.progress-bar {
  height: 8px;
  background: var(--glass);
  border-radius: 10px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--orange));
  width: 0%;
  transition: width 0.3s ease;
  box-shadow: 0 0 15px var(--orange-glow);
}

/* ---- UTILS ---- */
.text-orange {
  color: var(--orange);
}

.text-blue {
  color: var(--blue);
}

.text-muted {
  color: var(--text-muted);
}

/* ---- ANALYTICS DASHBOARD HEADER ---- */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

@media (max-width: 768px) {
  .dashboard-header {
    flex-direction: column;
    gap: 1.5rem;
    align-items: flex-start;
  }
}

.filter-group {
  display: flex;
  gap: 8px;
  background: var(--glass);
  padding: 5px;
  border-radius: 50px;
  border: 1px solid var(--border);
}