/* Telco Intelligence — Brand CSS
   Variáveis de cor, tipografia e componentes de logo.
   Usado pelo favicon.svg (var --ti-accent) e pelo site. */

:root {
  --ti-accent:  #660099;
  --ti-ink:     #0a0a0a;
  --ti-muted:   #6b6b6b;
  --ti-bg:      #ffffff;
  --ti-surface: #f8f8f8;
  --ti-line:    #e5e5e5;
  --ti-font-sans: 'Inter Tight', system-ui, sans-serif;
  --ti-font-mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ti-accent:  #A855F7;
    --ti-ink:     #f0f0f0;
    --ti-muted:   #a0a0a0;
    --ti-bg:      #0f0f0f;
    --ti-surface: #1a1a1a;
    --ti-line:    #2a2a2a;
  }
}

/* --- Componente de logo --- */

.ti-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

/* Monograma: quadrado com borda + ponto roxo */
.ti-box {
  position: relative;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid currentColor;
  font-family: var(--ti-font-mono);
  font-weight: 700;
  letter-spacing: -0.06em;
  color: var(--ti-ink);
}
.ti-box::after {
  content: '';
  position: absolute;
  bottom: -3px;
  right: -3px;
  width: 7px;
  height: 7px;
  background: var(--ti-accent);
}

/* Tamanhos */
.ti-box.ti-sm  { width: 28px; height: 28px; font-size: 13px; }
.ti-box.ti-md  { width: 36px; height: 36px; font-size: 16px; }
.ti-box.ti-lg  { width: 48px; height: 48px; font-size: 22px; }

/* Wordmark */
.ti-wordmark {
  font-family: var(--ti-font-sans);
  font-weight: 400;
  color: var(--ti-ink);
  line-height: 1;
}
.ti-wordmark b { font-weight: 700; }
.ti-wordmark.ti-sm { font-size: 14px; }
.ti-wordmark.ti-md { font-size: 18px; }
.ti-wordmark.ti-lg { font-size: 24px; }

/* Breadcrumb de módulo */
.ti-module {
  font-family: var(--ti-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ti-muted);
}
.ti-module-slash {
  margin-right: 2px;
  color: var(--ti-accent);
}

/* --- Header e nav --- */

.site-header {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--ti-line);
  background: var(--ti-surface);
}
.ti-nav { margin-left: auto; display: flex; gap: 24px; }
.ti-nav a {
  color: var(--ti-muted);
  text-decoration: none;
  font-family: var(--ti-font-sans);
  font-size: 13px;
  letter-spacing: 0.02em;
  transition: color 0.15s ease;
}
.ti-nav a:hover  { color: var(--ti-ink); }
.ti-nav a.active { color: var(--ti-ink); font-weight: 600; }