/* ==========================================================================
 * Simulador SCADA - CSS comum para páginas auxiliares
 * Estilo Indústria 4.0 consistente com o index.html principal
 * ========================================================================== */

:root {
  --bg-base: #060912;
  --bg-surface: #0a111f;
  --bg-elevated: #0f1829;
  --bg-panel: #141f36;
  --bg-hover: #1a2640;
  --border: #1e2d47;
  --border-bright: #2c3f5e;
  --text-primary: #e8edf5;
  --text-secondary: #8a96ad;
  --text-muted: #5a6783;
  --text-dim: #3d4861;
  --accent-cyan: #22d3ee;
  --accent-green: #10f0a0;
  --accent-amber: #fbbf24;
  --accent-red: #ef4444;
  --accent-orange: #fb923c;
}

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

html, body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent-cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.header {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-bright);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-mark {
  width: 4px;
  height: 32px;
  background: var(--accent-cyan);
}

.brand-text {
  font-family: 'Rajdhani', sans-serif;
}

.brand-kicker {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.brand-titulo {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.btn-voltar {
  background: var(--bg-elevated);
  border: 1px solid var(--border-bright);
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  border-radius: 2px;
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
}

.btn-voltar:hover {
  background: var(--bg-hover);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* Layout principal */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
}

.page-kicker {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-amber);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.page-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.1;
}

.page-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  font-style: italic;
}

/* Cards */
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-cyan);
  padding: 1.4rem 1.6rem;
  margin: 1rem 0;
  border-radius: 2px;
}

.card.amber { border-left-color: var(--accent-amber); }
.card.green { border-left-color: var(--accent-green); }
.card.red { border-left-color: var(--accent-red); }
.card.dashed { border-style: dashed; }

.card-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.card.amber .card-label { color: var(--accent-amber); }
.card.green .card-label { color: var(--accent-green); }
.card.red .card-label { color: var(--accent-red); }

.card-content {
  color: var(--text-primary);
  font-size: 0.98rem;
  line-height: 1.7;
}

/* Headings */
h1, h2, h3 {
  font-family: 'Rajdhani', sans-serif;
  color: var(--text-primary);
  margin-top: 2rem;
  margin-bottom: 0.8rem;
}

h2 {
  font-size: 1.7rem;
  color: var(--accent-cyan);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
}

h3 {
  font-size: 1.3rem;
  color: var(--accent-amber);
}

p {
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: 1.7;
}

ul, ol {
  margin: 1rem 0 1rem 2rem;
  color: var(--text-secondary);
}

li {
  margin-bottom: 0.4rem;
  line-height: 1.6;
}

strong { color: var(--text-primary); }
em { color: var(--accent-cyan); font-style: normal; }

code {
  background: var(--bg-panel);
  padding: 1px 6px;
  border-radius: 2px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9em;
  color: var(--accent-cyan);
}

/* Tabelas */
.tabela {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  font-size: 0.92rem;
}

.tabela thead {
  background: var(--bg-panel);
}

.tabela thead th {
  text-align: left;
  padding: 0.8rem 1rem;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--accent-cyan);
}

.tabela tbody td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.tabela tbody tr:hover {
  background: var(--bg-hover);
}

.tabela tbody tr:hover td {
  color: var(--text-primary);
}

/* Botões/links de ação */
.btn-acao {
  display: inline-block;
  background: var(--accent-cyan);
  color: var(--bg-base);
  padding: 0.6rem 1.2rem;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: 2px;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.btn-acao:hover {
  background: var(--text-primary);
  text-decoration: none;
}

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
  padding: 0.6rem 1.2rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
}

.btn-outline:hover {
  background: var(--accent-cyan);
  color: var(--bg-base);
  text-decoration: none;
}

/* Sumário/índice */
.indice {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 1.2rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 2px;
}

.indice-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 0.6rem;
}

.indice ul {
  margin: 0;
  list-style: none;
  padding: 0;
}

.indice li {
  padding: 0.3rem 0;
  border-bottom: 1px dashed var(--border);
}

.indice li:last-child {
  border-bottom: none;
}

.indice a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.indice a:hover {
  color: var(--accent-cyan);
}

/* Atividade */
.atividade-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent-cyan);
  padding: 1.8rem;
  margin: 1.5rem 0;
  border-radius: 2px;
}

.atividade-numero {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-amber);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.atividade-titulo {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0.5rem 0 0.8rem;
}

.atividade-descricao {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.7;
}

.atividade-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.atividade-meta span strong {
  color: var(--accent-cyan);
}

/* Caixa de dica colapsável (discreta) */
.dica {
  background: rgba(34, 211, 238, 0.05);
  border-left: 2px solid var(--accent-cyan);
  border-radius: 2px;
  margin: 1rem 0;
}

.dica summary {
  padding: 0.8rem 1rem;
  cursor: pointer;
  color: var(--accent-cyan);
  font-size: 0.9rem;
  font-weight: 600;
  list-style: none;
  user-select: none;
}

.dica summary::-webkit-details-marker {
  display: none;
}

.dica summary::before {
  content: '▶ ';
  display: inline-block;
  margin-right: 0.4rem;
  transition: transform 0.2s;
}

.dica[open] summary::before {
  transform: rotate(90deg);
}

.dica summary:hover {
  background: rgba(34, 211, 238, 0.1);
}

.dica-content {
  padding: 0 1rem 1rem 1.5rem;
  color: var(--text-secondary);
  font-size: 0.93rem;
  line-height: 1.6;
}

.dica-content p {
  margin-bottom: 0.6rem;
  color: var(--text-secondary);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.05em;
  margin-top: 4rem;
}

/* Responsivo */
@media (max-width: 700px) {
  .container { padding: 1rem; }
  .page-title { font-size: 1.8rem; }
  h2 { font-size: 1.4rem; }
  .atividade-card { padding: 1.2rem; }
}