/* ============================================================
   BELU FRANCIA · main.css · v20260629
   Tokens + Reset + Tipografía + Layout + Utilidades
   ============================================================ */

/* ── TOKENS ─────────────────────────────────────────────────── */
:root {
  /* Base */
  --bg:          #F7F3EE;
  --bg-2:        #EDE8E1;
  --paper:       #FFFFFF;
  --ink:         #1C1917;
  --ink-soft:    #44403C;
  --ink-mute:    #78716C;

  /* Azul — confianza clínica */
  --azul:        #1D4ED8;
  --azul-hover:  #1E40AF;
  --azul-pale:   #EFF6FF;
  --azul-mid:    #3B82F6;

  /* Teal — bienestar activo */
  --teal:        #0D9488;
  --teal-pale:   #F0FDFA;

  /* Tierra — calidez humana */
  --tierra:      #B45309;
  --tierra-lt:   #FEF3C7;
  --tierra-acc:  #D97706;

  /* UI */
  --line:        rgba(28,25,23,0.10);
  --line-soft:   rgba(28,25,23,0.055);
  --shadow:      0 2px 24px rgba(28,25,23,0.07);
  --shadow-lg:   0 12px 48px rgba(28,25,23,0.12);

  /* Layout */
  --nav-h:  72px;
  --max-w:  1180px;
  --pad:    clamp(20px, 5vw, 52px);
  --r:      16px;
  --r-sm:   8px;
  --r-lg:   24px;

  /* Fonts */
  --ff-serif: 'Fraunces', Georgia, serif;
  --ff-sans:  'Inter', system-ui, -apple-system, sans-serif;

  /* Easing */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-io:  cubic-bezier(0.76, 0, 0.24, 1);
}

/* ── RESET ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--ff-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
address { font-style: normal; }
button { cursor: pointer; background: none; border: none; font: inherit; }

/* ── TIPOGRAFÍA ─────────────────────────────────────────────── */
h1 {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: clamp(2.4rem, 5.5vw, 5rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
}
h2 {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: -0.022em;
}
h3 {
  font-family: var(--ff-serif);
  font-weight: 400;
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  line-height: 1.2;
  letter-spacing: -0.018em;
}
h4 {
  font-family: var(--ff-sans);
  font-weight: 500;
  font-size: 1.05rem;
  line-height: 1.4;
}
em { font-style: italic; color: var(--tierra-acc); }
p  { color: var(--ink-soft); }

/* Clases de texto utilitarias */
.text-xl   { font-size: 1.2rem; line-height: 1.75; color: var(--ink-soft); }
.text-lg   { font-size: 1.1rem; line-height: 1.8;  color: var(--ink-soft); }
.text-md   { font-size: 0.95rem; line-height: 1.75; color: var(--ink-mute); }
.text-sm   { font-size: 0.875rem; line-height: 1.65; color: var(--ink-mute); }

.eyebrow {
  font-family: var(--ff-sans);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--azul);
  display: inline-block;
  margin-bottom: 12px;
}
.eyebrow-teal   { color: var(--teal); }
.eyebrow-tierra { color: var(--tierra); }
.eyebrow-white  { color: rgba(247,243,238,0.6); }

/* ── LAYOUT ─────────────────────────────────────────────────── */
.container {
  width: min(var(--max-w), 100% - var(--pad) * 2);
  margin-inline: auto;
}
.section {
  padding: clamp(72px, 10vw, 130px) 0;
}
.section-header {
  margin-bottom: clamp(44px, 6vw, 72px);
}
.section-header.centered {
  text-align: center;
}
.section-header.centered .section-desc {
  margin-inline: auto;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--ink-mute);
  max-width: 56ch;
  margin-top: 14px;
  line-height: 1.78;
}

/* Fondo alternativo de secciones */
.bg-paper    { background: var(--paper); }
.bg-sand     { background: var(--bg-2); }
.bg-dark     { background: var(--ink); }
.bg-azul-pale{ background: var(--azul-pale); }
.bg-tierra-lt{ background: var(--tierra-lt); }

/* ── BOTONES ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 13px 26px;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: background 0.22s var(--ease-out), transform 0.18s, box-shadow 0.22s, color 0.2s, border-color 0.2s;
  white-space: nowrap;
  cursor: pointer;
  border: 1.5px solid transparent;
  font-family: var(--ff-sans);
}
.btn-primary {
  background: var(--azul);
  color: #fff;
  border-color: var(--azul);
}
.btn-primary:hover {
  background: var(--azul-hover);
  border-color: var(--azul-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(29,78,216,0.3);
}
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-secondary:hover {
  border-color: var(--azul);
  color: var(--azul);
}
.btn-ghost {
  background: transparent;
  color: rgba(255,255,255,0.78);
  border-bottom: 1px solid rgba(255,255,255,0.3);
  border-radius: 0;
  padding: 0 0 3px;
  border-left: none;
  border-right: none;
  border-top: none;
}
.btn-ghost:hover {
  color: #fff;
  border-color: #fff;
}
.btn-whatsapp {
  background: #25D366;
  color: #fff;
  border-color: #25D366;
  gap: 8px;
}
.btn-whatsapp:hover {
  background: #1da953;
  border-color: #1da953;
  transform: translateY(-2px);
}
.btn-lg { padding: 16px 34px; font-size: 0.97rem; }
.btn-sm { padding: 9px 20px;  font-size: 0.8rem; }
.btn-xl { padding: 18px 40px; font-size: 1.05rem; }

/* ── REVEAL ANIMATIONS ───────────────────────────────────────── */
.r-up, .r-l, .r-r {
  opacity: 0;
  transition: opacity 0.75s var(--ease-out), transform 0.75s var(--ease-out);
}
.r-up { transform: translateY(28px); }
.r-l  { transform: translateX(-32px); }
.r-r  { transform: translateX(32px); }
.r-up.in, .r-l.in, .r-r.in {
  opacity: 1;
  transform: none;
}
/* Safety net — fuerza visibilidad si JS falla */
.r-done { opacity: 1 !important; transform: none !important; }

/* Delays para staggers */
.r-delay-1 { transition-delay: 80ms; }
.r-delay-2 { transition-delay: 160ms; }
.r-delay-3 { transition-delay: 240ms; }
.r-delay-4 { transition-delay: 320ms; }

/* ── SCROLLBAR ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(29,78,216,0.25); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--azul); }

/* ── FOCUS VISIBLE ───────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--azul);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ── PRINT ───────────────────────────────────────────────────── */
@media print {
  .nav, .ticker-wrap, .fab, .mobile-menu { display: none !important; }
  .section { padding: 24px 0; }
}

/* ── SKIP LINK ───────────────────────────────────────────────── */
.skip-link {
  position: fixed;
  top: -80px; left: 16px;
  background: var(--azul); color: #fff;
  padding: 8px 16px; border-radius: var(--r-sm);
  font-size: .875rem; font-weight: 500; z-index: 9999;
  transition: top .2s;
}
.skip-link:focus { top: 16px; }