/* ========================================
   ACADEMIA NEUROMECÁNICA - LANDING PAGE
   Redesign — Base Styles
   ======================================== */

:root {
  /* Colors — to be refined with brand guidelines */
  --color-primary: #1a56db;
  --color-primary-dark: #1440a8;
  --color-primary-light: #e8eefb;
  --color-secondary: #0f172a;
  --color-accent: #f59e0b;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-border: #e2e8f0;

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --section-padding: 5rem 0;
  --container-max: 1200px;
  --container-padding: 0 1.5rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 86, 219, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary-light);
}

/* ========================================
   HERO
   ======================================== */
.hero {
  padding: 6rem 0 4rem;
  background: linear-gradient(135deg, var(--color-secondary) 0%, #1e3a5f 100%);
  color: #fff;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: rgba(255, 255, 255, 0.8);
  max-width: 640px;
  margin: 0 auto 2rem;
}

/* ========================================
   BENEFITS
   ======================================== */
.benefits {
  padding: var(--section-padding);
  background-color: var(--color-bg);
}

.benefits h2,
.pricing h2,
.testimonials h2,
.faq h2,
.cta h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
}

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

.benefit-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: box-shadow 0.2s ease;
}

.benefit-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.benefit-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.benefit-card p {
  color: var(--color-text-light);
}

/* ========================================
   PRICING
   ======================================== */
.pricing {
  padding: var(--section-padding);
  background-color: var(--color-bg-alt);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  justify-items: center;
}

.pricing-card {
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  text-align: center;
  max-width: 420px;
  width: 100%;
}

.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 8px 32px rgba(26, 86, 219, 0.15);
}

.pricing-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

.price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-light);
}

.pricing-card ul {
  list-style: none;
  text-align: left;
  margin-bottom: 2rem;
}

.pricing-card ul li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-light);
}

.pricing-card ul li::before {
  content: "✓ ";
  color: var(--color-primary);
  font-weight: 700;
}

/* ========================================
   TESTIMONIALS
   ======================================== */
.testimonials {
  padding: var(--section-padding);
  background-color: var(--color-bg);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.testimonial-card blockquote {
  font-style: italic;
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

.testimonial-card .author {
  font-weight: 600;
}

/* ========================================
   FAQ
   ======================================== */
.faq {
  padding: var(--section-padding);
  background-color: var(--color-bg-alt);
}

.faq-list {
  max-width: 768px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 0;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1.1rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 300;
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  color: var(--color-text-light);
  padding-top: 0.75rem;
}

/* ========================================
   CTA
   ======================================== */
.cta {
  padding: var(--section-padding);
  background: linear-gradient(135deg, var(--color-primary) 0%, #2563eb 100%);
  color: #fff;
  text-align: center;
}

.cta h2 {
  color: #fff;
}

.cta .btn-primary {
  background-color: #fff;
  color: var(--color-primary);
}

.cta .btn-primary:hover {
  background-color: #f1f5f9;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  padding: 2rem 0;
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.9rem;
  border-top: 1px solid var(--color-border);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
  :root {
    --section-padding: 3.5rem 0;
  }

  .hero {
    padding: 4rem 0 3rem;
  }

  .benefits-grid,
  .pricing-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}