/* ==========================================================================
   Mexa arte en resina — Wireframe Landing Page
   Escala de grises · Sin branding final · Fácil de escalar
   ========================================================================== */

/* --------------------------------------------------------------------------
   Variables y reset
   -------------------------------------------------------------------------- */
:root {
  --color-bg: #f5f5f5;
  --color-surface: #ffffff;
  --color-surface-alt: #ebebeb;
  --color-border: #cccccc;
  --color-border-dark: #999999;
  --color-text: #1a1a1a;
  --color-text-muted: #666666;
  --color-text-light: #888888;
  --color-accent: #4a4a4a;
  --color-accent-hover: #2e2e2e;
  --color-placeholder: #d9d9d9;
  --color-placeholder-text: #777777;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);

  --container-max: 1140px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4 {
  margin: 0 0 var(--space-sm);
  line-height: 1.25;
  font-weight: 700;
}

h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.125rem; }

p {
  margin: 0 0 var(--space-sm);
}

/* --------------------------------------------------------------------------
   Utilidades
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.section {
  padding-block: var(--space-xl);
}

.section:nth-child(even) {
  background-color: var(--color-surface);
}

.section-header {
  margin-bottom: var(--space-lg);
}

.section-header--center {
  text-align: center;
}

.section-desc {
  color: var(--color-text-muted);
  max-width: 42ch;
}

.section-header--center .section-desc {
  margin-inline: auto;
}

.eyebrow {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Placeholders de imagen (wireframe)
   -------------------------------------------------------------------------- */
.img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-placeholder);
  border: 2px dashed var(--color-border-dark);
  border-radius: var(--radius-md);
  color: var(--color-placeholder-text);
  font-size: 0.875rem;
  text-align: center;
  min-height: 200px;
}

.img-placeholder span {
  padding: var(--space-sm);
}

.img-sm {
  min-height: 160px;
  aspect-ratio: 4 / 3;
}

.img-md {
  min-height: 180px;
  aspect-ratio: 16 / 10;
}

.logo-placeholder {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-placeholder);
  border: 2px dashed var(--color-border-dark);
  border-radius: var(--radius-sm);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-placeholder-text);
}

.logo-placeholder--sm {
  width: 40px;
  height: 40px;
}

.icon-placeholder {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-alt);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1.25rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Botones
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  white-space: nowrap;
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-dark);
}

.btn-secondary:hover {
  background: var(--color-surface-alt);
  color: var(--color-text);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-border-dark);
}

.btn-outline:hover {
  background: var(--color-surface-alt);
  color: var(--color-accent-hover);
}

.btn-whatsapp {
  background: #6b6b6b;
  color: #fff;
  border-color: #6b6b6b;
}

.btn-whatsapp:hover {
  background: #555;
  border-color: #555;
  color: #fff;
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

/* --------------------------------------------------------------------------
   1. Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  min-height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.logo:hover {
  color: var(--color-text);
}

.logo-text {
  font-weight: 700;
  font-size: 0.9375rem;
}

.main-nav ul {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
}

.main-nav a:hover {
  color: var(--color-accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.social-nav ul {
  display: flex;
  gap: var(--space-xs);
  list-style: none;
}

.social-nav a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 0.75rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--color-text);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.social-nav a:hover {
  background: var(--color-placeholder);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: var(--color-surface-alt);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: absolute;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
}

/* --------------------------------------------------------------------------
   2. Hero
   -------------------------------------------------------------------------- */
.hero {
  padding-block: var(--space-xl);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.hero-subtitle {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  max-width: 48ch;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.hero-media .img-placeholder {
  min-height: 320px;
  width: 100%;
}

/* --------------------------------------------------------------------------
   3. Carrusel de productos
   -------------------------------------------------------------------------- */
.carousel {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.carousel-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  flex: 1;
  overflow: hidden;
}

.carousel-btn {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  font-size: 1.5rem;
  line-height: 1;
  background: var(--color-surface-alt);
  border: 2px solid var(--color-border);
  border-radius: 50%;
  cursor: pointer;
  color: var(--color-text);
}

.carousel-btn:hover {
  background: var(--color-placeholder);
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
}

.dot.active {
  background: var(--color-accent);
}

.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.product-card h3 {
  padding: var(--space-sm) var(--space-sm) 0;
  font-size: 1rem;
}

.product-card .price {
  padding: 0 var(--space-sm) var(--space-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  margin: 0;
}

.product-card .img-placeholder {
  border-radius: 0;
  border-inline: none;
  border-top: none;
}

/* --------------------------------------------------------------------------
   4. Cursos
   -------------------------------------------------------------------------- */
.card-grid {
  display: grid;
  gap: var(--space-md);
}

.card-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.card-grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.course-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.course-card .img-placeholder {
  border-radius: 0;
  border: none;
  border-bottom: 2px dashed var(--color-border);
}

.card-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-body p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  flex: 1;
}

.meta-list {
  list-style: none;
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.meta-list li + li {
  margin-top: 0.25rem;
}

.card-body .btn {
  align-self: flex-start;
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   5. Materiales
   -------------------------------------------------------------------------- */
.material-card {
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
}

.material-card h3 {
  font-size: 1rem;
}

.material-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
}

.material-card .icon-placeholder {
  margin-inline: auto;
}

/* --------------------------------------------------------------------------
   6. Ganancias
   -------------------------------------------------------------------------- */
.earnings {
  background: var(--color-surface-alt);
}

.earnings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.stats-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  list-style: none;
  margin: var(--space-lg) 0;
  padding: 0;
}

.stats-list li {
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.earnings-media .img-placeholder {
  min-height: 280px;
}

/* --------------------------------------------------------------------------
   7. Proceso paso a paso
   -------------------------------------------------------------------------- */
.steps-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  list-style: none;
  counter-reset: none;
}

.step-item {
  position: relative;
  padding: var(--space-md);
  padding-top: calc(var(--space-md) + 2rem);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.step-number {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: 50%;
}

.step-item h3 {
  font-size: 1rem;
}

.step-item p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* --------------------------------------------------------------------------
   8 y 9. Bloques CTA
   -------------------------------------------------------------------------- */
.cta-block {
  padding-block: var(--space-lg);
}

.cta-mercado {
  background: var(--color-surface-alt);
  border-block: 1px solid var(--color-border);
}

.cta-whatsapp {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.cta-inner--center {
  flex-direction: column;
  text-align: center;
}

.cta-content p,
.cta-inner--center p {
  color: var(--color-text-muted);
  max-width: 50ch;
}

.cta-inner--center p {
  margin-inline: auto;
}

.cta-visual .img-placeholder {
  width: 200px;
  min-height: 120px;
}

/* --------------------------------------------------------------------------
   10. Redes sociales
   -------------------------------------------------------------------------- */
.social-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  list-style: none;
}

.social-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-lg) var(--space-md);
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.2s, background 0.2s;
}

.social-card:hover {
  border-color: var(--color-border-dark);
  background: var(--color-surface-alt);
  color: var(--color-text);
}

.social-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-placeholder);
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.875rem;
}

.social-name {
  font-weight: 600;
}

.social-handle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   11. Mapa
   -------------------------------------------------------------------------- */
.map-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  min-height: 360px;
  background: var(--color-placeholder);
  border: 2px dashed var(--color-border-dark);
  border-radius: var(--radius-md);
  color: var(--color-placeholder-text);
  font-size: 0.9375rem;
}

.map-coords {
  font-size: 0.8125rem;
  font-family: monospace;
}

/* --------------------------------------------------------------------------
   12. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: #2a2a2a;
  color: #e0e0e0;
  padding-top: var(--space-xl);
}

.site-footer a {
  color: #e0e0e0;
}

.site-footer a:hover {
  color: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
}

.footer-brand .logo-placeholder {
  margin-bottom: var(--space-sm);
}

.footer-tagline {
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.footer-copy {
  font-size: 0.875rem;
  color: #aaa;
}

.footer-nav h3,
.footer-contact h3,
.footer-legal h3 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #999;
  margin-bottom: var(--space-sm);
}

.footer-nav ul,
.footer-contact ul,
.footer-legal ul {
  list-style: none;
}

.footer-nav li + li,
.footer-contact li + li,
.footer-legal li + li {
  margin-top: 0.5rem;
}

.footer-nav a {
  text-decoration: none;
  font-size: 0.9375rem;
}

.footer-contact li {
  font-size: 0.9375rem;
  color: #bbb;
}

.footer-bottom {
  border-top: 1px solid #444;
  padding-block: var(--space-md);
}

.footer-bottom .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
  font-size: 0.8125rem;
  color: #888;
}

.wireframe-note {
  font-style: italic;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

/* Tablet */
@media (max-width: 992px) {
  .hero-grid,
  .earnings-grid {
    grid-template-columns: 1fr;
  }

  .hero-media {
    order: -1;
  }

  .carousel-track {
    grid-template-columns: repeat(2, 1fr);
  }

  .card-grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .card-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .social-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stats-list {
    grid-template-columns: 1fr;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .section {
    padding-block: var(--space-lg);
  }

  .site-header {
    position: relative;
  }

  .header-inner {
    flex-wrap: wrap;
    padding-block: var(--space-sm);
    min-height: auto;
  }

  .main-nav {
    display: none; /* Wireframe: menú colapsado en móvil */
    order: 3;
    width: 100%;
  }

  .main-nav ul {
    flex-direction: column;
    gap: var(--space-xs);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border);
  }

  .header-actions {
    margin-left: auto;
  }

  .social-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .logo-text {
    font-size: 0.8125rem;
  }

  .carousel-track {
    grid-template-columns: 1fr;
  }

  .carousel-btn {
    display: none;
  }

  .card-grid--3,
  .card-grid--4 {
    grid-template-columns: 1fr;
  }

  .steps-list {
    grid-template-columns: 1fr;
  }

  .cta-inner {
    flex-direction: column;
    text-align: center;
  }

  .cta-visual .img-placeholder {
    width: 100%;
  }

  .social-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom .container {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
  }
}