/* ============================================================
   MODUM – Reset & Base
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

ul { list-style: none; }

button {
  font-family: var(--font-body);
  cursor: pointer;
}

/* ── Layout Utilities ── */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-px);
}

@media (min-width: 640px) {
  .container { padding: 0 2rem; }
}
@media (min-width: 1024px) {
  .container { padding: 0 3rem; }
}

section {
  padding: var(--section-py) 0;
}

.text-center { text-align: center; }

/* ── Background Variants ── */

.bg-white  { background: var(--white); }
.bg-soft   { background: linear-gradient(180deg, #f8fafc 0%, var(--white) 100%); }
.bg-gradient-subtle {
  background: linear-gradient(135deg, rgba(0,153,204,0.07), rgba(0,61,122,0.07));
}

/* ── Section Typography ── */

.section-title {
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  color: var(--primary);
  margin-bottom: 0.65rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 2.75rem;
  max-width: 44rem;
  margin-left: auto;
  margin-right: auto;
}

/* ── Scroll Reveal Animations ── */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s cubic-bezier(0.4,0,0.2,1),
              transform 0.65s cubic-bezier(0.4,0,0.2,1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Fallback: si JS no carga o no es soportado, todo visible */
.no-js .reveal,
.reveal-ready .reveal {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ── Nav active state ── */

header nav a.active {
  color: var(--primary);
  font-weight: 600;
}