/* ═══════════════════════════════════════════════
   BASE.CSS — Diseñoverde
   Reset, tipografía base, nav, progress, hamburguesa,
   botones (.btn-*), sistema .reveal, footer y
   utilidades compartidas.
   Las variables de marca NO están aquí: viven en
   tokens.css, que debe cargarse ANTES que esta hoja.
   Si necesitas cambiar el nav o el comportamiento del
   menú móvil — se cambia AQUÍ, y se refleja en todas
   las páginas que la cargan.
   ═══════════════════════════════════════════════ */

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family:'Seravek','Trebuchet MS',sans-serif; background:var(--fondo-neutro); color:var(--texto); overflow-x:hidden; }
a { text-decoration:none; color:inherit; }
img { display:block; max-width:100%; }

/* ── PROGRESS BAR ── */
#progress { position:fixed; top:0; left:0; height:2px; background:var(--acento); width:0; z-index:400; transition:width .08s linear; }

/* ── NAV ── */
.nav { position:fixed; top:0; left:0; right:0; height:64px; background:rgba(249,250,247,0.94); backdrop-filter:blur(12px); border-bottom:1px solid var(--gris-2); display:flex; align-items:center; justify-content:space-between; padding:0 48px; z-index:300; transition:box-shadow .3s; }
.nav.scrolled { box-shadow:0 2px 20px rgba(15,42,13,0.08); }
.nav-logo { display:flex; align-items:center; }
.nav-links { display:flex; align-items:center; gap:32px; list-style:none; }
.nav-links a { font-size:11px; font-weight:400; text-transform:uppercase; letter-spacing:2.5px; color:var(--gris-4); transition:color .35s ease; }
.nav-links a:hover { color:var(--verde); }
.nav-links a.activo { color:var(--verde); font-weight:700; }
.btn-nav { background:var(--verde); color:var(--blanco); padding:10px 26px; border:none; cursor:pointer; font-family:inherit; font-size:11px; font-weight:400; text-transform:uppercase; letter-spacing:2.5px; border-radius:var(--radio-hoja-sm); transition:background .2s, transform .15s; display:inline-block; }
.btn-nav:hover { background:var(--verde-oscuro); transform:translateY(-1px); }

/* ── HAMBURGUESA ── */
.nav-toggle { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:4px; z-index:310; }
.nav-toggle span { display:block; width:22px; height:2px; background:var(--verde-oscuro); border-radius:2px; transition:all .3s; }
.nav-toggle.open span:nth-child(1) { transform:translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity:0; }
.nav-toggle.open span:nth-child(3) { transform:translateY(-7px) rotate(-45deg); }

/* ── EYEBROW (etiqueta pequeña sobre títulos) ── */
.eyebrow { display:inline-flex; align-items:center; gap:12px; font-size:10px; font-weight:400; text-transform:uppercase; letter-spacing:4px; color:var(--acento); margin-bottom:22px; }
.eyebrow::before { content:''; width:28px; height:1px; background:var(--acento); flex-shrink:0; }
.eyebrow.light { color:rgba(82,168,76,0.65); }
.eyebrow.light::before { background:rgba(82,168,76,0.35); }
.eyebrow.muted { color:var(--gris-3); }
.eyebrow.muted::before { background:var(--gris-3); }

/* ── BOTONES COMPARTIDOS ── */
.btn-primary { display:inline-flex; align-items:center; gap:10px; background:var(--acento); color:var(--blanco); padding:16px 36px; border:none; cursor:pointer; font-family:inherit; font-size:12px; font-weight:400; text-transform:uppercase; letter-spacing:2.5px; border-radius:var(--radio-hoja-sm); transition:background .2s, transform .15s; }
.btn-primary:hover { background:var(--verde); transform:translateY(-2px); }
.btn-ghost { display:inline-flex; align-items:center; gap:10px; background:transparent; color:var(--verde); padding:15px 34px; border:1px solid rgba(48,102,45,0.35); cursor:pointer; font-family:inherit; font-size:11px; font-weight:400; text-transform:uppercase; letter-spacing:2.5px; border-radius:var(--radio-hoja-sm); transition:all .2s; }
.btn-ghost:hover { background:rgba(48,102,45,0.06); border-color:var(--verde); transform:translateY(-1px); }
.btn-ghost-dark { display:inline-flex; align-items:center; gap:10px; background:transparent; color:rgba(255,255,255,0.45); padding:15px 34px; border:1px solid rgba(255,255,255,0.15); cursor:pointer; font-family:inherit; font-size:11px; font-weight:300; text-transform:uppercase; letter-spacing:2.5px; border-radius:var(--radio-hoja-sm); transition:all .2s; }
.btn-ghost-dark:hover { color:rgba(255,255,255,.7); border-color:rgba(255,255,255,.3); }
.btn-volver { display:inline-flex; align-items:center; gap:10px; background:transparent; border:1px solid var(--gris-2); color:var(--gris-4); padding:14px 32px; border-radius:var(--radio-hoja-sm); font-size:11px; font-weight:400; text-transform:uppercase; letter-spacing:2.5px; transition:all .2s; }
.btn-volver:hover { border-color:var(--verde); color:var(--verde); }
.volver-sec { padding:60px 48px; text-align:center; }

/* ── ANIMACIONES REVEAL ── */
@keyframes fadeUp { from { opacity:0; transform:translateY(28px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes scrollPulse { 0% { transform:scaleY(0); transform-origin:top; opacity:1; } 60% { transform:scaleY(1); transform-origin:top; opacity:1; } 100% { transform:scaleY(1); transform-origin:bottom; opacity:0; } }
.reveal { opacity:0; transform:translateY(24px); transition:opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity:1; transform:translateY(0); }
.reveal-delay-1 { transition-delay:.1s; }
.reveal-delay-2 { transition-delay:.2s; }
.reveal-delay-3 { transition-delay:.3s; }
.reveal-delay-4 { transition-delay:.4s; }
.reveal-delay-5 { transition-delay:.5s; }

/* ── FOOTER ── */
footer { background:#070d07; padding:28px 48px; display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:16px; }
.footer-logo { font-size:17px; font-weight:700; color:rgba(255,255,255,0.22); }
.footer-links { display:flex; gap:24px; }
.footer-links a { font-size:10px; font-weight:300; text-transform:uppercase; letter-spacing:2px; color:rgba(255,255,255,0.45); transition:color .2s; }
.footer-links a:hover { color:rgba(255,255,255,0.75); }
.footer-copy { font-size:10px; font-weight:300; color:rgba(255,255,255,0.3); letter-spacing:1px; }

/* ── RESPONSIVE COMPARTIDO (nav + footer) ── */
@media (max-width: 900px) {
  .nav { padding:0 24px; }
  .nav-links { display:none; flex-direction:column; gap:0; position:fixed; top:64px; left:0; right:0; background:rgba(249,250,247,0.98); border-bottom:1px solid var(--gris-2); padding:16px 24px 24px; z-index:299; backdrop-filter:blur(12px); }
  .nav-links.open { display:flex; }
  .nav-links li { border-bottom:1px solid var(--gris-1); }
  .nav-links li:last-child { border-bottom:none; margin-top:12px; }
  .nav-links a { display:block; padding:14px 0; font-size:13px; }
  .btn-nav { width:100%; text-align:center; display:block; padding:14px; }
  .nav-toggle { display:flex; }
  footer { padding:24px; flex-direction:column; align-items:flex-start; gap:12px; }
  .volver-sec { padding:40px 24px; }
  .btn-primary, .btn-ghost { width:100%; justify-content:center; }
}