:root {
    --primary: #0f2a44;
    --accent: #f28c28;
    --text: #1f2933;
    --muted: #6b7280;
    --bg: #ffffff;
    --bg-soft: #f4f6f8;
  }
  
  * {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
  }
  
  .container {
    max-inline-size: 1100px;
    margin: auto;
    padding: 0 24px;
  }
  
  /* HEADER */
  
  .site-header {
    position: sticky;
    inset-block-start: 0;
    background: white;
    border-block-end: 1px solid #e5e7eb;
    z-index: 10;
  }
  
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    block-size: 72px;
  }
  
  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  
  .brand-logo {
    block-size: 42px;
  }
  
  .brand-name {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary);
  }
  
  .brand-name span {
    color: var(--text);
  }
  
  .main-nav a {
    margin-inline-start: 24px;
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
  }
  
  .main-nav a:hover {
    color: var(--primary);
  }
  
  /* HERO */
  
  .hero {
    background: linear-gradient(180deg, #f8fafc, #ffffff);
    padding: 80px 0 60px;
  }
  
  .hero-inner {
    max-inline-size: 720px;
  }
  
  
  .hero-evolved {
    font-size: 1.2rem;
    color: var(--primary);
    margin-block-end: 16px;
  }
  
  .hero-claim {
    font-size: 1rem;
    color: var(--muted);
    margin-block-end: 12px;
  }
  
  .hero-exp {
    font-size: 0.95rem;
    color: var(--muted);
    margin-block-end: 32px;
  }
  
  .hero h1 {
    font-size: 2.8rem;
    line-height: 1.2;
    margin-block-end: 24px;
    color: var(--primary);
  }
  
  @media (max-inline-size: 768px) {
    .hero h1 {
      font-size: 2.2rem;
    }
  }
  
  .hero h1 span {
    font-weight: 500;
    color: var(--text);
  }
  
  .hero p {
    font-size: 1.1rem;
    color: var(--muted);
    margin-block-end: 32px;
  }
  
  .hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
  }
  
  .btn-primary {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 14px 28px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
  }
  
  .btn-primary:hover {
    background: #0b2035;
  }
  
  .btn-secondary {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 6px;
    border: 1px solid var(--primary);
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
  }
  
  .btn-secondary:hover {
    background: #f1f5f9;
  }
  
  /* SERVICES */
  
  .services {
    background: var(--bg-soft);
    padding: 80px 0;
  }
  
  .services h2 {
    font-size: 2rem;
    margin-block-end: 48px;
  }
  
  .service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
  }
  
  .service-card {
    background: white;
    padding: 28px;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
  }
  
  .service-card h3 {
    margin-block-start: 0;
    color: var(--primary);
  }
  
  /* ABOUT */
  
  .about {
    padding: 80px 0;
  }
  
  /* CONTACT */
  
  .contact {
    background: var(--bg-soft);
    padding: 80px 0;
  }
  
  .contact-data {
    margin-block-start: 24px;
    color: var(--muted);
  }
  
  /* FOOTER */
  
  .site-footer {
    background: #111827;
    color: #9ca3af;
    padding: 32px 0;
    text-align: center;
    font-size: 0.9rem;
  }
  
  /* CONTACT FORM */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }
  
  .contact-info h2 {
    margin-block-start: 0;
  }
  
  .contact-form {
    background: white;
    padding: 32px;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
  }
  
  .contact-form label {
    display: block;
    margin-block-end: 16px;
    font-size: 0.9rem;
    color: var(--muted);
  }
  
  .contact-form input,
  .contact-form textarea {
    inline-size: 100%;
    margin-block-start: 6px;
    padding: 10px 12px;
    border-radius: 6px;
    border: 1px solid #d1d5db;
    font-family: inherit;
    font-size: 0.95rem;
  }
  
  .contact-form input:focus,
  .contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
  }
  
  .contact-form input.error,
  .contact-form textarea.error {
    border-color: #ef4444;
  }
  
  /* Clase general para ocultar elementos */
  .hidden {
    display: none !important;
  }
  
  .error-message {
    display: block;
    color: #ef4444;
    font-size: 0.875rem;
    margin-block-start: 4px;
  }
  
  .error-message.hidden {
    display: none;
  }
  
  .success-message {
    padding: 16px;
    background-color: #d1fae5;
    border: 1px solid #10b981;
    border-radius: 6px;
    color: #065f46;
    margin-block-end: 20px;
  }
  
  /* Regla muy específica para ocultar mensaje de éxito */
  .success-message.hidden,
  div.success-message.hidden {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    block-size: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow: hidden !important;
  }
  
  .success-message p {
    margin: 0;
  }
  
  /* Botón de envío: control de visibilidad de textos */
  #submit-btn {
    position: relative;
  }
  
  /* Estado inicial: mostrar solo "Enviar consulta" */
  #submit-btn #submit-text {
    display: inline-block;
  }
  
  /* Ocultar "Enviar consulta" cuando tiene clase hidden */
  #submit-btn #submit-text.hidden {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
  }
  
  /* "Enviando..." está oculto por defecto (cuando tiene clase hidden) */
  #submit-btn #submit-loading.hidden {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
  }
  
  /* Cuando se quita la clase hidden de "Enviando...", mostrarlo */
  #submit-btn #submit-loading:not(.hidden) {
    display: inline-block !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
  
  /* Cuando se muestra "Enviando...", forzar ocultar el texto normal */
  #submit-btn #submit-loading:not(.hidden) ~ #submit-text {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
  }
  
  @media (max-inline-size: 768px) {
    .contact-grid {
      grid-template-columns: 1fr;
    }
  }
  
  .value-blocks {
    padding: 80px 0;
  }
  
  .value-blocks .block {
    margin-block-end: 48px;
  }
  
  .value-blocks h2 {
    font-size: 1.8rem;
    margin-block-end: 20px;
    color: var(--primary);
  }
  
  .value-blocks ul {
    list-style: none;
    padding: 0;
  }
  
  .value-blocks li {
    margin-block-end: 14px;
    padding-inline-start: 20px;
    position: relative;
  }
  
  .value-blocks li::before {
    content: "—";
    position: absolute;
    inset-inline-start: 0;
    color: var(--accent);
  }
 
  
  /* Accordion */
  
  .accordion {
    border-block-start: 1px solid #e5e7eb;
    padding-block-start: 20px;
  }
  
  .accordion summary {
    cursor: pointer;
    font-weight: 500;
    color: var(--primary);
  }
  
  .accordion ul {
    margin-block-start: 16px;
  }