/* =======================================================
   1. RESET & VARIABLES GLOBALES
   ======================================================= */

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

:root {
  /* Colores */
  --color-text-primary: #0f1115;
  --color-text-secondary: #6b7280;
  --color-text-muted: #9ca3af;
  --color-accent: #2563eb;
  --color-white: #ffffff;
  --color-border: #e5e7eb;
  --color-border-dashed: #93c5fd;

  --color-icon-blue: #dbeafe;
  --color-icon-purple: #e0e7ff;
  --color-icon-green: #dcfce7;

  /* Tipografía */
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --fs-logo: 1.0625rem;
  --fs-nav-link: 0.9375rem;
  --fs-hero-title: clamp(1.9rem, 5vw, 2.75rem);
  --fs-hero-subtitle: clamp(0.95rem, 2vw, 1.0625rem);
  --fs-button: 0.9375rem;
  --fs-card-title: 0.9375rem;
  --fs-card-description: 0.8125rem;

  /* Espaciados */
  --container-max-width: 1180px;
  --section-padding-inline: 24px;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  color: var(--color-text-primary);
  line-height: 1.5;
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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


/* =======================================================
   2. UTILIDADES COMPARTIDAS
   ======================================================= */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: var(--fs-button);
  font-weight: 500;
  padding: 11px 22px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  white-space: nowrap;
}

.button:active {
  transform: translateY(1px);
}

.button__icon {
  width: 16px;
  height: 16px;
}

.button--primary {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.button--primary:hover {
  background-color: #1d4fd1;
}

.button--secondary {
  background-color: var(--color-white);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.button--secondary:hover {
  border-color: #d1d5db;
  background-color: #fafafa;
}


/* =======================================================
   3. NAVBAR
   ======================================================= */

.navbar {
  width: 100%;
  border-bottom: 1px solid var(--color-border);
}

.navbar__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 18px var(--section-padding-inline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.navbar__logo-icon {
  width: 20px;
  height: 20px;
  color: var(--color-text-primary);
}

.navbar__brand-name {
  font-size: var(--fs-logo);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.navbar__nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.navbar__nav-link {
  font-size: var(--fs-nav-link);
  color: var(--color-text-secondary);
  transition: color 0.15s ease;
}

.navbar__nav-link:hover {
  color: var(--color-text-primary);
}

/* Navbar — mobile */
@media (max-width: 640px) {
  .navbar__container {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .navbar__nav-list {
    gap: 16px 20px;
  }
}


/* =======================================================
   4. HERO / ENCABEZADO
   ======================================================= */

.hero {
  border-bottom: 1px dashed var(--color-border-dashed);
}

.hero__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 88px var(--section-padding-inline) 64px;
  text-align: center;
}

.hero__title {
  font-size: var(--fs-hero-title);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.hero__title-accent {
  color: var(--color-accent);
}

.hero__subtitle {
  margin-top: 22px;
  font-size: var(--fs-hero-subtitle);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.hero__actions {
  margin-top: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Hero — mobile */
@media (max-width: 480px) {
  .hero__container {
    padding: 56px var(--section-padding-inline) 48px;
  }

  .hero__title br {
    display: none;
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .hero__actions .button {
    width: 100%;
  }
}


/* =======================================================
   5. FEATURES / TARJETAS
   ======================================================= */

.features {
  border-bottom: 1px dashed var(--color-border-dashed);
}

.features__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 48px var(--section-padding-inline);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-white);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  box-shadow: 0 4px 14px rgba(15, 17, 21, 0.06);
  border-color: #d8dce2;
}

.feature-card__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
}

.feature-card__icon--blue {
  background-color: var(--color-icon-blue);
}

.feature-card__icon--purple {
  background-color: var(--color-icon-purple);
}

.feature-card__icon--green {
  background-color: var(--color-icon-green);
}

.feature-card__title {
  font-size: var(--fs-card-title);
  font-weight: 700;
  color: var(--color-text-primary);
}

.feature-card__description {
  margin-top: 3px;
  font-size: var(--fs-card-description);
  color: var(--color-text-muted);
}

/* Features — tablet */
@media (max-width: 860px) {
  .features__container {
    grid-template-columns: 1fr;
  }
}

/* Features — mobile */
@media (max-width: 480px) {
  .feature-card {
    padding: 16px;
    gap: 12px;
  }

  .feature-card__icon {
    width: 40px;
    height: 40px;
  }
}