/* ============================================================
   MG Web & Marketing — main.css
   Estructura: Variables → Reset → Base → Layout → Componentes
   ============================================================ */

/* ── VARIABLES ──────────────────────────────────────────────── */
:root {
  /* Colores */
  --color-black:    #0a0b0f;
  --color-white:    #ffffff;
  --color-gray-50:  #f9f9f7;
  --color-gray-100: #f0f0ec;
  --color-gray-200: #e0e0d8;
  --color-gray-300: #c8c8c0;
  --color-gray-400: #9ca3af;
  --color-gray-600: #6b7280;
  --color-gray-800: #444441;
  --color-accent:   #b5a99a;   /* gris cálido — acento decorativo */
  --color-accent-d: #7a6e63;

  /* Tipografía */
  --font-sans:    'DM Sans', system-ui, sans-serif;
  --font-heading: 'Syne', system-ui, sans-serif;

  --text-xs:   .75rem;
  --text-sm:   .875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;

  /* Espaciado */
  --space-1:  .25rem;
  --space-2:  .5rem;
  --space-3:  .75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max:  1280px;
  --container-pad:  5%;
  --radius-sm:      6px;
  --radius:         12px;
  --radius-lg:      20px;
  --radius-full:    100px;

  /* Bordes */
  --border:         1px solid var(--color-gray-200);
  --border-dark:    1px solid rgba(255,255,255,0.07);

  /* Sombras */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow:     0 4px 16px rgba(0,0,0,.08);
  --shadow-lg:  0 8px 32px rgba(0,0,0,.12);

  /* Transiciones */
  --transition: .2s ease;
  --transition-slow: .4s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--color-black);
  background: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* ── BASE TIPOGRÁFICA ───────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

h1 { font-size: clamp(2.5rem, 5vw, var(--text-6xl)); }
h2 { font-size: clamp(1.8rem, 3.5vw, var(--text-4xl)); }
h3 { font-size: clamp(1.3rem, 2.5vw, var(--text-2xl)); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p { line-height: 1.7; }

/* ── LAYOUT ─────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--space-24);
}

.section--sm {
  padding-block: var(--space-16);
}

.section--lg {
  padding-block: clamp(4rem, 8vw, 8rem);
}

/* Grid de 12 columnas */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-6);
}

/* ── UTILIDADES ─────────────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

.text-muted   { color: var(--color-gray-600); }
.text-center  { text-align: center; }
.text-heading { font-family: var(--font-heading); }

/* ── COMPONENTES BASE ───────────────────────────────────────── */

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: .75rem 1.75rem;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: .01em;
  transition: opacity var(--transition), transform var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn:hover   { opacity: .85; }
.btn:active  { transform: scale(.98); }

.btn--primary {
  background: var(--color-black);
  color: var(--color-white);
}

.btn--outline {
  background: transparent;
  color: var(--color-black);
  border: 1.5px solid var(--color-black);
}

.btn--outline:hover {
  background: var(--color-black);
  color: var(--color-white);
  opacity: 1;
}

.btn--ghost {
  background: transparent;
  color: var(--color-gray-600);
  padding-inline: 0;
}

.btn--ghost:hover {
  color: var(--color-black);
  opacity: 1;
}

/* Badge / Etiqueta */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-gray-100);
  border: 1px solid var(--color-gray-200);
  color: var(--color-gray-800);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: .3rem .9rem;
  border-radius: var(--radius-full);
}

/* Section tag (etiqueta de sección) */
.section-tag {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-gray-600);
  margin-bottom: var(--space-4);
}

/* Card base */
.card {
  background: var(--color-white);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: border-color var(--transition), transform var(--transition-slow), box-shadow var(--transition-slow);
}

.card:hover {
  border-color: var(--color-gray-300);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

/* Divider */
.divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-gray-400);
  font-size: var(--text-xs);
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-gray-200);
}

/* ── FORMULARIOS ────────────────────────────────────────────── */
.form-label {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--color-gray-800);
  margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: .65rem .9rem;
  font-size: var(--text-sm);
  color: var(--color-black);
  outline: none;
  transition: border-color var(--transition), background var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent-d);
  background: var(--color-white);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.55;
}

/* ── SITE LAYOUT ────────────────────────────────────────────── */
.site {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1;
}

/* ── ANIMACIONES ────────────────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: none;
}

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  :root { --container-pad: 4%; }
}

@media (max-width: 768px) {
  :root {
    --container-pad: 1.25rem;
    --space-24: 4rem;
    --space-20: 3rem;
    --space-16: 2.5rem;
  }
}