/* ============================================================================
   PT: Estilos do dashboard IoT. Tema escuro moderno com cartoes (cards),
       graficos e paleta baseada em azul/verde (frio/quente) para dados de
       temperatura e umidade.
   EN: IoT dashboard styles. Modern dark theme with cards, charts and a
       blue/green (cool/warm) palette for temperature and humidity data.
   ============================================================================ */

:root {
  --bg: #0b1120;
  --bg-elevated: #121a2e;
  --card: #161f38;
  --border: #24304f;
  --text: #e8ecf7;
  --text-muted: #93a0c2;
  --accent: #4fd1c5;
  --accent-2: #f6ad55;
  --danger: #f56565;
  --success: #48bb78;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --font: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(circle at top left, #12203f, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

header.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
}

.brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  margin-left: 22px;
  font-size: 0.95rem;
}
nav a:hover { color: var(--text); }

.lang-switch {
  display: flex;
  gap: 6px;
  margin-left: 22px;
}
.lang-switch button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
}
.lang-switch button.active {
  background: var(--accent);
  color: #04201d;
  border-color: var(--accent);
  font-weight: 600;
}

.hero {
  padding: 48px 0 24px;
}
.hero h1 {
  font-size: 2.1rem;
  margin: 0 0 10px;
}
.hero p {
  color: var(--text-muted);
  max-width: 640px;
  font-size: 1.05rem;
}

.sensor-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.sensor-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px 7px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--card);
  border: 1px solid var(--border);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.sensor-tag-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

.sensor-tag-name {
  color: var(--text);
}

.sensor-tag-state {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sensor-tag.online {
  background: rgba(72, 187, 120, 0.12);
  border-color: rgba(72, 187, 120, 0.45);
  box-shadow: 0 0 16px rgba(72, 187, 120, 0.15);
}
.sensor-tag.online .sensor-tag-dot {
  background: var(--success);
  box-shadow: 0 0 0 0 rgba(72, 187, 120, 0.6);
  animation: sensor-pulse-green 2s infinite;
}
.sensor-tag.online .sensor-tag-state { color: var(--success); }

.sensor-tag.offline {
  background: rgba(245, 101, 101, 0.1);
  border-color: rgba(245, 101, 101, 0.4);
}
.sensor-tag.offline .sensor-tag-dot {
  background: var(--danger);
  box-shadow: 0 0 0 0 rgba(245, 101, 101, 0.6);
  animation: sensor-pulse-red 2s infinite;
}
.sensor-tag.offline .sensor-tag-state { color: var(--danger); }

@keyframes sensor-pulse-green {
  0%   { box-shadow: 0 0 0 0 rgba(72, 187, 120, 0.55); }
  70%  { box-shadow: 0 0 0 7px rgba(72, 187, 120, 0); }
  100% { box-shadow: 0 0 0 0 rgba(72, 187, 120, 0); }
}
@keyframes sensor-pulse-red {
  0%   { box-shadow: 0 0 0 0 rgba(245, 101, 101, 0.55); }
  70%  { box-shadow: 0 0 0 7px rgba(245, 101, 101, 0); }
  100% { box-shadow: 0 0 0 0 rgba(245, 101, 101, 0); }
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  margin: 24px 0 40px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.card .label {
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-bottom: 6px;
}
.card .value {
  font-size: 1.9rem;
  font-weight: 700;
}
.card .value.temp { color: var(--accent-2); }
.card .value.hum { color: var(--accent); }
.card .source-tag {
  margin-top: 8px;
  font-size: 0.72rem;
  color: var(--text-muted);
  border-top: 1px dashed var(--border);
  padding-top: 8px;
}

section {
  margin: 48px 0;
}
section h2 {
  font-size: 1.4rem;
  margin-bottom: 4px;
}

.forecast-window-title {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.forecast-window-title h2 { margin: 0; }

.engine-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.engine-tag-cron {
  background: rgba(79, 209, 197, 0.15);
  color: var(--accent);
  border: 1px solid rgba(79, 209, 197, 0.4);
}
.engine-tag-local {
  background: rgba(246, 173, 85, 0.15);
  color: var(--accent-2);
  border: 1px solid rgba(246, 173, 85, 0.4);
}

.empty-hint {
  margin: 14px 2px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
}
section .subtitle {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 18px;
}

.panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.range-select {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.range-select button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
}
.range-select button.active {
  background: var(--accent);
  color: #04201d;
  border-color: var(--accent);
  font-weight: 600;
}

.sources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.source-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.source-card h3 {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 1.05rem;
}
.source-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
}

canvas { width: 100% !important; }