/* Design System — clam-estructuras · Agente 1 · 2026-10-03
   Derivado de design-system.md. Fuentes: Outfit + Inter (Google Fonts). */

:root {
  /* Colores */
  --color-primary: #15181D;          /* carbón: fondos oscuros, titulares */
  --color-secondary: #3A4452;        /* acero: texto secundario fuerte, bordes oscuros */
  --color-accent: #FF6B00;           /* naranja de marca: CTA principal, acentos */
  --color-accent-hover: #E85F00;
  --color-accent-active: #CC5400;
  --color-accent-text: #B84700;      /* naranja para texto/enlaces sobre fondo claro (AA) */
  --color-highlight: #FFD400;        /* amarillo del logo: solo detalles sobre fondo oscuro */
  --color-background: #FFFFFF;
  --color-background-alt: #F4F5F7;
  --color-background-dark: #15181D;
  --color-text: #1B2028;
  --color-text-muted: #56606E;
  --color-text-on-dark: #FFFFFF;
  --color-text-on-dark-muted: #B9C0CA;
  --color-border: #DDE1E6;
  --color-border-strong: #AEB6C1;
  --color-success: #1E7B45;
  --color-error: #B3261E;
  --color-disabled-bg: #E3E6EA;
  --color-disabled-text: #8A93A0;
  --color-placeholder-img: #C9CED6;  /* bloque de imagen en wireframe */

  /* Tipografía */
  --font-primary: "Outfit", "Segoe UI", Arial, sans-serif;   /* titulares, botones, cifras */
  --font-secondary: "Inter", "Segoe UI", Arial, sans-serif;  /* cuerpo, formularios */
  --text-h1: clamp(2.125rem, 1.4rem + 3vw, 3.5rem);
  --text-h2: clamp(1.75rem, 1.35rem + 1.6vw, 2.5rem);
  --text-h3: clamp(1.125rem, 1.05rem + 0.4vw, 1.375rem);
  --text-body-lg: 1.125rem;
  --text-body: 1rem;
  --text-caption: 0.875rem;
  --text-label: 0.8125rem;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --leading-tight: 1.1;
  --leading-heading: 1.2;
  --leading-body: 1.6;
  --tracking-heading: -0.01em;
  --tracking-label: 0.08em;

  /* Espaciado y grid */
  --spacing-unit: 8px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --space-12: 96px;
  --container-max-width: 1200px;
  --grid-columns: 12;
  --grid-gutter: 24px;
  --section-spacing: clamp(64px, 8vw, 96px);
  --header-height: 72px;

  /* Forma y sombra */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --shadow-card: 0 1px 2px rgba(21, 24, 29, 0.06), 0 2px 8px rgba(21, 24, 29, 0.06);
  --shadow-card-hover: 0 4px 10px rgba(21, 24, 29, 0.08), 0 16px 32px rgba(21, 24, 29, 0.12);
  --shadow-floating: 0 6px 20px rgba(21, 24, 29, 0.25);

  /* CTAs */
  --cta-primary-bg: var(--color-accent);
  --cta-primary-bg-hover: var(--color-accent-hover);
  --cta-primary-bg-active: var(--color-accent-active);
  --cta-primary-color: #15181D;
  --cta-primary-radius: var(--radius-md);
  --cta-primary-padding: 14px 28px;
  --cta-min-height: 52px;
  --cta-secondary-border: var(--color-primary);
  --cta-secondary-color: var(--color-primary);

  /* Animaciones */
  --transition-fast: 150ms;
  --transition-base: 220ms;
  --transition-slow: 500ms;
  --easing-base: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 16px); }
body {
  margin: 0;
  font-family: var(--font-secondary);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-text);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 {
  font-family: var(--font-primary);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary);
  margin: 0 0 var(--space-2);
}
h1 { font-size: var(--text-h1); font-weight: var(--weight-bold); line-height: var(--leading-tight); }
h2 { font-size: var(--text-h2); font-weight: var(--weight-bold); }
h3 { font-size: var(--text-h3); font-weight: var(--weight-semibold); }
p { margin: 0 0 var(--space-2); }
a { color: var(--color-accent-text); }
:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; border-radius: 4px; }

/* L001: <section> lleva el padding vertical; .container va siempre anidado adentro */
section { padding: var(--section-spacing) 0; }
.container { max-width: var(--container-max-width); margin: 0 auto; padding: 0 var(--grid-gutter); }
.section--alt { background: var(--color-background-alt); }
.section--dark { background: var(--color-background-dark); color: var(--color-text-on-dark); }
.section--dark h2, .section--dark h3 { color: var(--color-text-on-dark); }
.section-lead { font-size: var(--text-body-lg); color: var(--color-text-muted); max-width: 720px; }
.section--dark .section-lead { color: var(--color-text-on-dark-muted); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: var(--cta-min-height); padding: var(--cta-primary-padding);
  font-family: var(--font-primary); font-size: 1.0625rem; font-weight: var(--weight-semibold);
  text-decoration: none; border: 2px solid transparent; border-radius: var(--cta-primary-radius);
  cursor: pointer;
  transition: background-color var(--transition-base) var(--easing-base),
              transform var(--transition-base) var(--easing-base),
              box-shadow var(--transition-base) var(--easing-base),
              color var(--transition-base) var(--easing-base),
              border-color var(--transition-base) var(--easing-base);
}
.btn--primary { background: var(--cta-primary-bg); color: var(--cta-primary-color); }
.btn--primary:hover { background: var(--cta-primary-bg-hover); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255, 107, 0, 0.28); }
.btn--primary:active { background: var(--cta-primary-bg-active); transform: translateY(0); box-shadow: none; }
.btn--secondary { background: transparent; color: var(--cta-secondary-color); border-color: var(--cta-secondary-border); }
.btn--secondary:hover { background: var(--color-primary); color: #fff; }
.section--dark .btn--secondary { color: #fff; border-color: #fff; }
.section--dark .btn--secondary:hover { background: #fff; color: var(--color-primary); }
.btn--small { min-height: 48px; padding: 10px 18px; font-size: 1rem; }
.btn--block { width: 100%; }
.btn:disabled, .btn[aria-disabled="true"] { background: var(--color-disabled-bg); color: var(--color-disabled-text); border-color: transparent; cursor: not-allowed; transform: none; box-shadow: none; }
.btn .icon { width: 22px; height: 22px; flex: none; }

/* Enlace de texto con ícono (WhatsApp subordinado) */
.link-icon { display: inline-flex; align-items: center; gap: 8px; min-height: 48px; font-weight: var(--weight-semibold); text-decoration: underline; text-underline-offset: 4px; }
.link-icon .icon { width: 22px; height: 22px; }

/* ---------- Componentes ---------- */
.card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card); padding: var(--space-3);
  transition: transform var(--transition-base) var(--easing-base),
              box-shadow var(--transition-base) var(--easing-base),
              border-color var(--transition-base) var(--easing-base);
}
.card--product:hover, .card--product:focus-within { transform: translateY(-6px); box-shadow: var(--shadow-card-hover); border-color: var(--color-accent); }
.badge {
  display: inline-block; padding: 4px 10px; border-radius: var(--radius-pill);
  font-family: var(--font-primary); font-size: var(--text-label); font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-label); text-transform: uppercase;
  background: var(--color-background-alt); color: var(--color-secondary);
}
.badge--accent { background: #FFF0E3; color: var(--color-accent-text); }
.eyebrow { font-family: var(--font-primary); font-size: var(--text-label); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-accent-text); }
.section--dark .eyebrow { color: var(--color-highlight); }
.img-placeholder {
  display: flex; align-items: center; justify-content: center; text-align: center;
  background: var(--color-placeholder-img); color: var(--color-secondary);
  font-size: var(--text-caption); border-radius: var(--radius-md); padding: var(--space-2);
}

/* Formulario */
.field { margin-bottom: var(--space-3); }
.field label { display: block; margin-bottom: 6px; font-weight: var(--weight-semibold); font-size: 0.9375rem; }
.field input, .field select, .field textarea {
  width: 100%; min-height: 52px; padding: 12px 14px; font: inherit; color: var(--color-text);
  background: #fff; border: 1.5px solid var(--color-border-strong); border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast) var(--easing-base), box-shadow var(--transition-fast) var(--easing-base);
}
.field textarea { min-height: 112px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.25); }
.field .help { margin-top: 6px; font-size: var(--text-caption); color: var(--color-text-muted); }
.field .error { margin-top: 6px; font-size: var(--text-caption); color: var(--color-error); display: none; }
.field.is-invalid input, .field.is-invalid select { border-color: var(--color-error); }
.field.is-invalid .error { display: block; }

/* Aparición al entrar en pantalla */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity var(--transition-slow) var(--easing-base), transform var(--transition-slow) var(--easing-base); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}