/**
 * RESPONSIVE CSS - MOBILE-FIRST & BREAKPOINTS ADAPTATIVOS
 * Mobile (<768px), Tablet (768px - 1024px), Desktop (>1024px)
 */

/* ==========================================================================
   TABLET & DESKTOP (>= 768px)
   ========================================================================== */
@media (min-width: 768px) and (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }

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

  .credentials-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }

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

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

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

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

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

  .problem-item {
    grid-template-columns: 60px 1fr 1fr 40px;
  }
}

/* ==========================================================================
   MOBILE (< 768px)
   ========================================================================== */
@media (max-width: 767px) {
  :root {
    --header-height: 68px;
    --space-4xl: 3.5rem;
    --space-3xl: 2.5rem;
    --space-2xl: 2rem;
  }

  /* Header Mobile */
  .mobile-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-2xl) var(--space-lg);
    gap: var(--space-xl);
    transform: translateX(100%);
    transition: transform var(--transition-smooth);
    overflow-y: auto;
    border-top: 1px solid var(--color-border);
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
    width: 100%;
  }

  .nav-link {
    font-size: var(--font-size-md);
    width: 100%;
    padding: var(--space-xs) 0;
    border-bottom: 1px solid var(--color-border-light);
  }

  .nav-actions {
    width: 100%;
    margin-top: var(--space-md);
  }

  .nav-actions .btn {
    width: 100%;
  }

  /* Animación icono menú hamburguesa */
  .mobile-toggle.is-active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .mobile-toggle.is-active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-toggle.is-active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Hero Mobile */
  .hero-section {
    min-height: auto;
    padding: var(--space-xl) 0 var(--space-2xl);
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .hero-media {
    order: 2;
    justify-content: center;
  }

  .hero-image-wrapper {
    max-width: 320px;
    margin: 0 auto;
  }

  .hero-badge-floater {
    left: 10px;
    bottom: -15px;
    padding: var(--space-xs) var(--space-sm);
  }

  .hero-ctas {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: var(--space-xs);
    width: 100%;
  }

  .hero-ctas .btn {
    flex: 1 1 0;
    min-width: 0;
    width: auto;
    min-height: 40px;
    padding: 0.55rem 0.6rem;
    font-size: clamp(0.7rem, 2.8vw, 0.8rem);
    letter-spacing: 0.02em;
    white-space: nowrap;
    text-align: center;
    justify-content: center;
  }

  .hero-ctas .btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
  }

  /* Sección de Identificación Mobile */
  .problem-item {
    grid-template-columns: 40px 1fr 30px;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-xs);
  }

  .problem-desc {
    grid-column: 2 / 4;
    padding-top: var(--space-xs);
    padding-right: 0;
  }

  /* Áreas de Práctica Mobile */
  .practices-grid {
    grid-template-columns: 1fr;
  }

  .practice-card {
    min-height: auto;
    padding: var(--space-xl) var(--space-md);
  }

  .practices-stack-container {
    padding-bottom: 0;
  }

  .practice-stack-card {
    top: 75px;
    margin-bottom: 30vh;
    border-radius: var(--radius-md, 12px);
  }

  .practice-stack-card:last-child {
    margin-bottom: 2rem;
  }

  .practice-stack-inner {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .practice-stack-left {
    border-right: none;
    border-bottom: 1px solid var(--color-border-light, #edeae3);
    padding: var(--space-xl) var(--space-lg);
  }

  .practice-stack-title {
    font-size: 1.55rem;
    margin-bottom: var(--space-sm);
  }

  .practice-stack-actions {
    padding-top: var(--space-md);
    flex-direction: column;
    align-items: stretch;
  }

  .practice-stack-actions .btn {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .practice-stack-right {
    padding: var(--space-xl) var(--space-lg);
  }

  .practice-stack-img {
    height: 120px;
    margin: calc(-1 * var(--space-xl)) calc(-1 * var(--space-lg)) var(--space-md) calc(-1 * var(--space-lg));
  }

  /* Sobre Mí Mobile */
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .about-image-frame {
    max-width: 320px;
    margin: 0 auto;
  }

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

  /* Credenciales Mobile */
  .credentials-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }

  /* Metodología Mobile */
  .methodology-steps {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* Casos, Testimonios y Recursos */
  .cases-grid,
  .testimonials-grid,
  .resources-grid {
    grid-template-columns: 1fr;
  }

  /* FAQ Mobile */
  .faq-layout {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  /* Contacto Mobile */
  .contact-layout {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .contact-form-wrapper {
    padding: var(--space-lg) var(--space-md);
  }

  /* Footer Mobile */
  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .footer-legal-links {
    justify-content: center;
  }
}