/* ========================================== */
/* ESTILOS GLOBALES Y BASE DE DISEÑO         */
/* ========================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Plus+Jakarta+Sans:wght@600;700;800&display=swap');

:root {
  --canvas-dark: #0D1117;
  --card-surface: #161B22;
  --tech-border: #30363D;
  --accent-cyan: #00E5FF;
  --text-primary: #FFFFFF;
  --text-secondary: #E6EDF3;
  --text-muted: #8B949E;
}

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

body {
  background-color: var(--canvas-dark);
  color: var(--text-secondary);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Tarjetas de superficie técnica */
.surface-card {
  background-color: var(--card-surface);
  border: 1px solid var(--tech-border);
  border-radius: 12px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.surface-card:hover {
  border-color: var(--accent-cyan);
  box-shadow: inset 0 1px 0 rgba(0, 229, 255, 0.3), 0 0 16px rgba(0, 229, 255, 0.1);
  transform: translateY(-2px);
}

/* Botones del selector de idioma */
.lang-btn {
  transition: all 0.2s ease;
  text-decoration: none;
}

.lang-btn.active {
  color: var(--accent-cyan);
  font-weight: 700;
}

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

.lang-btn.inactive:hover {
  color: var(--text-primary);
}