/*
  Style sheet for the “Sendero Metabólico” landing page.  
  
  This file defines a fresh colour palette inspired by natural landscapes and
  Mediterranean sunsets. The design uses modern CSS features such as CSS
  variables, flexbox and grid to create a responsive layout. Each section
  of the page—hero, pillars, articles, story, interview, FAQ, testimonials,
  forms, about and footer—has been thoughtfully styled to ensure visual
  harmony and readability across devices.  
*/

/* Colour palette */
:root {
  --colour-primary: #2a4838;      /* deep evergreen */
  --colour-secondary: #c76c52;    /* warm coral */
  --colour-tertiary: #5fa896;     /* soft teal */
  --colour-accent: #f4b942;      /* golden ochre */
  --colour-light: #f8f5f0;       /* near‑white background */
  --colour-dark: #2f2d2d;        /* dark charcoal */
  --colour-muted: #8f9e8e;       /* muted sage for subtle text */
}

/* Base styles */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  color: var(--colour-dark);
  background-color: var(--colour-light);
  line-height: 1.6;
}

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

a {
  color: var(--colour-secondary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Layout helpers */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 0;
}

header {
  background-color: var(--colour-primary);
  color: var(--colour-light);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 10;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
}

header nav li {
  margin-left: 1.5rem;
}

header nav a {
  color: var(--colour-light);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

header nav a:hover {
  color: var(--colour-accent);
}

/* Hero section */
.hero {
  position: relative;
  background-image: url('hero.png');
  background-size: cover;
  background-position: center;
  color: var(--colour-light);
  text-align: center;
  padding: 6rem 1rem 8rem;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(43, 72, 56, 0.7), rgba(43, 72, 56, 0.9));
}

.hero .hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  line-height: 1.3;
  color: var(--colour-light);
}

.hero p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  color: var(--colour-light);
}

.btn-primary {
  display: inline-block;
  background-color: var(--colour-secondary);
  color: var(--colour-light);
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
  transition: background-color 0.3s ease;
}

.btn-primary:hover {
  background-color: var(--colour-accent);
}

/* Pillars section */
.pillars {
  background-color: var(--colour-light);
  padding: 4rem 0;
}

.pillars h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
  color: var(--colour-primary);
}

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.pillar {
  background-color: #fff;
  padding: 1.5rem;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease;
}

.pillar:hover {
  transform: translateY(-4px);
}

.pillar h3 {
  margin-top: 0;
  color: var(--colour-secondary);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.pillar p {
  color: var(--colour-dark);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

/* Articles section */
.articles {
  background-color: var(--colour-tertiary);
  color: var(--colour-light);
  padding: 4rem 0;
}

.articles h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
  color: var(--colour-light);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.article {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 1.5rem;
  border-radius: 6px;
  backdrop-filter: blur(10px);
}

.article h3 {
  margin-top: 0;
  color: var(--colour-accent);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.article p {
  font-size: 0.95rem;
  margin-bottom: 1rem;
  color: var(--colour-light);
}

/* Story section */
.story {
  background-color: var(--colour-light);
  padding: 4rem 0;
}

.story h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
  color: var(--colour-primary);
}

.story-content {
  max-width: 800px;
  margin: 0 auto;
  color: var(--colour-dark);
}

.story-content h3 {
  color: var(--colour-secondary);
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.story-content p {
  margin-bottom: 1rem;
  font-size: 1rem;
}

/* Interview section */
.interview {
  background-color: var(--colour-accent);
  padding: 4rem 0;
  color: var(--colour-dark);
}

.interview h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
  color: var(--colour-dark);
}

.qa {
  max-width: 850px;
  margin: 0 auto;
}

.qa-item {
  margin-bottom: 2rem;
}

.qa-item h3 {
  font-size: 1.2rem;
  color: var(--colour-primary);
  margin-bottom: 0.3rem;
}

.qa-item p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--colour-dark);
}

/* FAQ section */
.faq {
  background-color: var(--colour-tertiary);
  color: var(--colour-light);
  padding: 4rem 0;
}

.faq h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
  color: var(--colour-light);
}

.faq-item {
  max-width: 850px;
  margin: 0.75rem auto;
}

.faq-item h3 {
  font-size: 1.2rem;
  color: var(--colour-accent);
  margin-bottom: 0.3rem;
}

.faq-item p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--colour-light);
}

/* Testimonials */
.testimonials {
  background-color: var(--colour-light);
  padding: 4rem 0;
}

.testimonials h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
  color: var(--colour-primary);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.testimonial {
  background-color: #fff;
  padding: 1.5rem;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.testimonial h3 {
  margin-top: 0;
  color: var(--colour-secondary);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.testimonial p {
  font-size: 0.95rem;
  color: var(--colour-dark);
  margin-bottom: 0.75rem;
}

/* Forms (request and newsletter) */
.forms {
  background-color: var(--colour-accent);
  padding: 4rem 0;
  color: var(--colour-dark);
}

.forms h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
  color: var(--colour-dark);
}

.form-container {
  max-width: 800px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  margin-bottom: 0.3rem;
  font-size: 0.9rem;
  color: var(--colour-dark);
}

.form-group input,
.form-group textarea {
  padding: 0.6rem;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 4px;
  font-size: 0.95rem;
}

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

.checkbox-group {
  display: flex;
  align-items: center;
  font-size: 0.85rem;
  color: var(--colour-dark);
}

.checkbox-group input {
  margin-right: 0.5rem;
}

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

.btn-submit {
  background-color: var(--colour-secondary);
  color: var(--colour-light);
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.btn-submit:hover {
  background-color: var(--colour-primary);
}

/* About section */
.about {
  background-color: var(--colour-light);
  padding: 4rem 0;
  color: var(--colour-dark);
}

.about h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
  color: var(--colour-primary);
}

.about-content {
  max-width: 850px;
  margin: 0 auto;
  font-size: 1rem;
}

.about-content p {
  margin-bottom: 1rem;
  color: var(--colour-dark);
}

/* Footer */
footer {
  background-color: var(--colour-primary);
  color: var(--colour-light);
  padding: 2rem 0;
  text-align: center;
}

footer p {
  margin: 0.3rem 0;
  font-size: 0.85rem;
}

footer a {
  color: var(--colour-accent);
  margin: 0 0.5rem;
  font-size: 0.9rem;
}

/* Cookie bar */
.cookie-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.85);
  color: #fff;
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  z-index: 20;
}

.cookie-bar p {
  margin: 0.5rem;
  font-size: 0.85rem;
  flex: 1 1 300px;
}

.cookie-bar button {
  margin: 0.5rem;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
}

.cookie-bar .accept {
  background-color: var(--colour-secondary);
  color: var(--colour-light);
}

.cookie-bar .decline {
  background-color: var(--colour-tertiary);
  color: var(--colour-light);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }
  .pillars h2, .articles h2, .story h2, .interview h2,
  .faq h2, .testimonials h2, .forms h2, .about h2 {
    font-size: 1.5rem;
  }
  header nav li {
    margin-left: 1rem;
  }
}