/* ============================================================
   HeatSchools — hoja de estilos
   Paleta cálida (calor) sobre fondo claro y legible.
   ============================================================ */

:root {
  --heat-1: #b91c1c;   /* rojo intenso */
  --heat-2: #ea580c;   /* naranja */
  --heat-3: #f59e0b;   /* ámbar */
  --ink:    #1f2937;   /* texto */
  --muted:  #6b7280;   /* texto secundario */
  --line:   #e5e7eb;   /* bordes */
  --bg:     #ffffff;
  --bg-soft:#fdf6f0;   /* fondo cálido suave */
  --max:    980px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
}

.container { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }

a { color: var(--heat-1); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.25; color: var(--ink); }
h1 { font-size: 2rem; margin: 0 0 .5rem; }
h2 { font-size: 1.45rem; margin: 2.25rem 0 .75rem; }
h3 { font-size: 1.15rem; margin: 1.5rem 0 .5rem; }

/* --- Cabecera --- */
.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: rgba(255,255,255,.95);
  backdrop-filter: blur(6px); z-index: 10;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: .9rem 1.25rem; }
.brand-mark {
  font-weight: 800; font-size: 1.25rem; letter-spacing: -.02em;
  background: linear-gradient(90deg, var(--heat-1), var(--heat-3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.site-nav { display: flex; align-items: center; flex-wrap: wrap; }
.site-nav > a { color: var(--ink); margin-left: 1.25rem; font-weight: 600; font-size: .95rem; }
.site-nav > a:hover { color: var(--heat-2); text-decoration: none; }
.lang-switch { margin-left: 1.25rem; padding-left: 1rem; border-left: 1px solid var(--line); }
.lang-switch a.lang { margin-left: .5rem; font-size: .82rem; font-weight: 700; color: var(--muted); }
.lang-switch a.lang.active { color: var(--heat-1); }
.lang-switch a.lang:hover { color: var(--heat-2); text-decoration: none; }
@media (max-width: 640px) {
  .header-inner { flex-direction: column; align-items: flex-start; gap: .5rem; }
  .site-nav > a:first-child { margin-left: 0; }
}

/* --- Hero --- */
.hero {
  background: linear-gradient(135deg, var(--heat-1), var(--heat-2) 60%, var(--heat-3));
  color: #fff; padding: 4rem 0 3.5rem; margin-bottom: 2rem;
}
.hero .container { max-width: var(--max); }
.hero h1 { color: #fff; font-size: 2.6rem; max-width: 20ch; }
.hero p.lead { font-size: 1.25rem; max-width: 55ch; opacity: .97; }
.hero .btn {
  display: inline-block; margin-top: 1.25rem; background: #fff; color: var(--heat-1);
  padding: .7rem 1.3rem; border-radius: 8px; font-weight: 700;
}
.hero .btn:hover { text-decoration: none; opacity: .92; }

/* --- Tarjetas / rejillas --- */
.grid { display: grid; gap: 1.25rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 760px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.card {
  border: 1px solid var(--line); border-radius: 12px; padding: 1.25rem;
  background: var(--bg); transition: box-shadow .15s, transform .15s;
}
.card:hover { box-shadow: 0 8px 24px rgba(0,0,0,.07); transform: translateY(-2px); }
.card h3 { margin-top: 0; }

/* Objetivos con número */
.goal { border-left: 4px solid var(--heat-2); padding: .25rem 0 .25rem 1rem; margin: 1rem 0; }
.goal .n { color: var(--heat-2); font-weight: 800; }

/* --- Equipo --- */
.person { text-align: left; }
.person .role { color: var(--heat-2); font-weight: 600; font-size: .9rem; }
.person .aff { color: var(--muted); font-size: .9rem; }
.person img { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; margin-bottom: .5rem; background: var(--bg-soft); }

/* --- Publicaciones --- */
.pub { padding: 1rem 0; border-bottom: 1px solid var(--line); }
.pub .pub-title { font-weight: 700; }
.pub .pub-meta { color: var(--muted); font-size: .92rem; }
.tag {
  display: inline-block; font-size: .72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .04em; color: var(--heat-1); background: var(--bg-soft);
  border: 1px solid var(--heat-3); border-radius: 999px; padding: .1rem .6rem; margin-right: .4rem;
}

/* --- Noticias --- */
.news-item { padding: 1.25rem 0; border-bottom: 1px solid var(--line); }
.news-item .post-meta, .post-meta { color: var(--muted); font-size: .9rem; margin: 0 0 .25rem; }
.post-hero { width: 100%; border-radius: 12px; margin: 1rem 0; }
.post-body { font-size: 1.05rem; }
.back { margin-top: 2rem; }

/* --- Pie --- */
.site-footer { border-top: 1px solid var(--line); margin-top: 4rem; background: var(--bg-soft); }
.footer-inner { display: flex; justify-content: space-between; gap: 2rem; padding: 2rem 1.25rem; flex-wrap: wrap; }
.footer-meta { color: var(--muted); font-size: .88rem; text-align: right; }
.footer-meta p { margin: .15rem 0; }
@media (max-width: 640px) { .footer-meta { text-align: left; } }

/* utilidades */
.section { margin: 2.5rem 0; }
.muted { color: var(--muted); }
.center { text-align: center; }
ul.clean { list-style: none; padding: 0; }