:root {
  --bg:         #0b0d12;
  --bg-elev:    #141821;
  --bg-elev-2:  #1c2230;
  --border:     #252b3a;
  --text:       #e6e9ef;
  --text-dim:   #8a93a6;
  --accent:     #6c8cff;
  --success:    #4ade80;
  --warning:    #fbbf24;
  --danger:     #f87171;
  --radius:     14px;
  --shadow:     0 10px 30px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ====== Topbar ====== */
.topbar {
  border-bottom: 1px solid var(--border);
  background: rgba(11, 13, 18, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}
.brand__dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.topbar__back {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}
.topbar__back:hover { color: var(--accent); }

/* ====== Main ====== */
.main {
  padding: 2.5rem 1.25rem 4rem;
}

.hero {
  margin-bottom: 2.5rem;
  max-width: 720px;
}
.hero__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 0.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.hero__subtitle {
  margin: 0;
  color: var(--text-dim);
  font-size: 1.05rem;
}

/* ====== Cards de KPI ====== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}
.card__label {
  color: var(--text-dim);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.card__value {
  font-size: 1.75rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.card--danger  .card__value { color: var(--danger); }
.card--success .card__value { color: var(--success); }
.card--warning .card__value { color: var(--warning); }

/* ====== Grid de gráficos ====== */
.grid-graficos {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 3rem;
}
@media (min-width: 900px) {
  .grid-graficos {
    grid-template-columns: 1fr 1fr;
  }
  .painel--wide { grid-column: 1 / -1; }
}

.painel {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}
.painel__titulo {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-dim);
}
.painel__canvas {
  position: relative;
  height: 280px;
}
@media (min-width: 900px) {
  .painel--wide .painel__canvas { height: 340px; }
}

/* ====== Rodapé ====== */
.rodape {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  padding: 2rem 0 0;
  border-top: 1px solid var(--border);
}
.rodape a { color: var(--accent); text-decoration: none; }
.rodape a:hover { text-decoration: underline; }