/* palette: terracotta-slate */
:root {
  --primary-color: #C0392B;      /* botones, acentos, títulos */
  --secondary-color: #5D6D7E;    /* hero bg, dark-sections, footer */
  --accent-color: #F0DB4F;       /* iconos, hover, decoración */
  --background-color: #FFF8F5;   /* fondo light-sections */
  --dark-color: #111111;
  --text-color: #333333;
  --border-color: rgba(0,0,0,0.15);
  --shadow-color: rgba(0,0,0,0.1);
  --gradient-primary: linear-gradient(135deg, var(--accent-color) 0%, var(--primary-color) 100%);
  --main-font: 'Montserrat', sans-serif;
  --alt-font: 'Lato', sans-serif;
  
  /* border-style: rounded */
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-btn: 8px;
  
  /* shadow-style: flat */
  --shadow-card: none;
  --shadow-hover: none;
}

/* TYPOGRAPHY SCALE */
h1 {
  font-size: clamp(42px, 8vw, 66px);
  line-height: 1.1;
  font-weight: 700;
}
h2 {
  font-size: clamp(28px, 4.5vw, 48px);
  line-height: 1.2;
  font-weight: 700;
}
h3 {
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1.3;
  font-weight: 600;
}
p {
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.7;
}

/* BASE ANIMATIONS */
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

section {
  animation: fade-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* BUTTONS */
.btn-primary {
  background-color: var(--primary-color);
  color: #FFFFFF;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  border: 2px solid var(--primary-color);
  transition: transform 0.2s, background-color 0.2s;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-primary:hover {
  background-color: transparent;
  color: var(--primary-color);
  transform: translateY(-2px);
}

.btn-accent {
  background-color: var(--accent-color);
  color: var(--dark-color);
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  border: 2px solid var(--accent-color);
  transition: transform 0.2s, background-color 0.2s;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-accent:hover {
  background-color: transparent;
  color: var(--accent-color);
  transform: translateY(-2px);
}

/* HEADER & BURGER MENU (Mobile-First) */
header {
  background: var(--secondary-color);
  position: relative;
  width: 100%;
}
.header-inner {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  justify-content: space-between;
  align-items: center;
}
.logo img {
  max-height: 44px;
  width: auto;
}
.burger-btn {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 24px;
  min-width: 44px;
  min-height: 44px;
  cursor: pointer;
  z-index: 1000;
  padding: 10px;
}
.burger-btn .bar {
  width: 24px;
  height: 2px;
  background: #f0f0f0;
  transition: transform 0.28s ease, opacity 0.28s ease;
}
#menu-toggle:checked + .burger-btn .bar:first-child {
  transform: translateY(8px) rotate(45deg);
}
#menu-toggle:checked + .burger-btn .bar:nth-child(2) {
  opacity: 0;
}
#menu-toggle:checked + .burger-btn .bar:last-child {
  transform: translateY(-8px) rotate(-45deg);
}
.site-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--secondary-color);
  z-index: 999;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
#menu-toggle:checked ~ .site-nav {
  display: block;
}
.site-nav ul {
  display: flex;
  flex-direction: column;
  padding: 16px 24px;
  gap: 16px;
}
.site-nav ul li a {
  color: #F5F5F5;
  font-weight: 600;
  font-size: 16px;
  transition: color 0.2s;
  display: block;
  padding: 8px 0;
}
.site-nav ul li a:hover {
  color: var(--accent-color);
}

@media (min-width: 768px) {
  .burger-btn {
    display: none;
  }
  .site-nav {
    display: flex !important;
    position: static;
    border-top: none;
    background: transparent;
  }
  .site-nav ul {
    flex-direction: row;
    gap: 28px;
    padding: 0;
  }
  .site-nav ul li a {
    padding: 0;
  }
}

/* FEATURES: features-icon-row (Mobile-First) */
.features-icon-row-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 640px) {
  .features-icon-row-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .features-icon-row-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.feature-icon-card {
  transition: transform 0.25s ease;
}
.feature-icon-card:hover {
  transform: translateY(-4px);
}

/* ABOUT: img-overlap (Mobile-First) */
.img-overlap-container {
  position: relative;
  width: 100%;
  max-width: 480px;
  margin-top: 24px;
}
.overlap-image {
  width: 100%;
  height: auto;
  object-fit: cover;
}
@media (min-width: 1024px) {
  .img-overlap-container {
    margin-top: 0;
    margin-right: -40px;
  }
}

/* EXTRA: steps-horizontal (Mobile-First) */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .steps-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.step-card {
  transition: transform 0.25s ease;
}
.step-card:hover {
  transform: translateY(-4px);
}

/* TESTIMONIALS: testimonials-cards (Mobile-First) */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
.testimonial-card {
  transition: transform 0.25s ease;
}
.testimonial-card:hover {
  transform: translateY(-4px);
}

/* NO HORIZONTAL SCROLL */
html, body {
  overflow-x: hidden;
  width: 100vw;
}

/* GENERAL PADDINGS */
section {
  padding-top: 48px;
  padding-bottom: 48px;
}
@media (min-width: 768px) {
  section {
    padding-top: 80px;
    padding-bottom: 80px;
  }
}