/* Future Minds — paleta extraída por muestreo de píxeles reales del logo
   (ver Negocios/BRIEF-futureminds-web.md y el registro de extracción en la
   conversación de build). No son aproximaciones visuales. */
:root {
  --color-navy: #001446;       /* "FUTURE", texto principal, nav */
  --color-blue: #0082D2;       /* "MINDS", acentos, enlaces */
  --color-blue-light: #0096DC; /* extremo claro del degradado de "MINDS" */
  --color-silver: #C8C8C8;     /* detalles del caduceo, bordes suaves */
  --color-text: #3C3C3C;       /* texto de cuerpo (tono del tagline del logo) */
  --color-bg: #FCFCFC;         /* fondo del sitio */
  --font-sans: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header / nav */
.site-header {
  background: #fff;
  border-bottom: 1px solid #eee;
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  padding-bottom: 12px;
}

.site-header img.logo {
  height: 112px;
  width: auto;
  display: block;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: var(--color-navy);
  font-weight: 600;
  font-size: 0.95rem;
}

.site-nav a:hover { color: var(--color-blue); text-decoration: none; }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-blue) 100%);
  color: #fff;
  padding: 72px 0;
}

.hero h1 {
  font-size: 2.4rem;
  margin: 0 0 16px;
  max-width: 700px;
}

.hero p {
  font-size: 1.15rem;
  max-width: 620px;
  color: #eaf3fb;
}

.btn {
  display: inline-block;
  background: #fff;
  color: var(--color-navy);
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 4px;
  margin-top: 24px;
}

.btn:hover { background: var(--color-silver); text-decoration: none; }

/* Sections */
section { padding: 56px 0; }

section h2 {
  color: var(--color-navy);
  font-size: 1.7rem;
  margin-bottom: 8px;
}

.section-intro {
  color: var(--color-text);
  max-width: 700px;
  margin-bottom: 32px;
}

/* Cards grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  border: 1px solid #e6e6e6;
  border-radius: 6px;
  padding: 24px;
  background: #fff;
}

.card h3 {
  color: var(--color-navy);
  margin-top: 0;
}

.card .placeholder-img {
  background: var(--color-silver);
  height: 140px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.alt-bg { background: #f2f6fa; }

.placeholder {
  color: #b23b3b;
  font-weight: 600;
}

/* Formulario de contacto */
form.contact-form {
  display: grid;
  gap: 16px;
  max-width: 520px;
}

form.contact-form label {
  display: block;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 6px;
}

form.contact-form input,
form.contact-form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 1rem;
}

form.contact-form button {
  justify-self: start;
  background: var(--color-blue);
  color: #fff;
  border: none;
  padding: 12px 28px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
}

form.contact-form button:hover { background: var(--color-navy); }

/* Footer */
.site-footer {
  background: var(--color-navy);
  color: #cfd8e6;
  padding: 32px 0;
  margin-top: 48px;
  font-size: 0.9rem;
}

.site-footer a { color: #9fd0f0; }

@media (max-width: 720px) {
  .site-header .container { flex-direction: column; gap: 12px; }
  .site-nav { width: 100%; }
  .site-nav ul { flex-wrap: wrap; gap: 16px; justify-content: center; }
  .hero h1 { font-size: 1.9rem; }
}

@media (max-width: 600px) {
  .site-header img.logo { height: 64px; }
}