:root {
  --color-primary: #0057b8;
  --color-primary-dark: #003f87;
  --color-primary-light: #e6f0fa;
  --color-dark: #0f172a;
  --color-text: #334155;
  --color-text-light: #64748b;
  --color-bg: #f8fafc;
  --color-white: #ffffff;
  --color-border: #e2e8f0;
  --color-success: #047857;
  --color-error: #b91c1c;
  --shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --radius: 0.5rem;
  --max-width: 1200px;
  --header-height: 72px;
  --transition: 200ms ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  text-decoration: underline;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.5rem 1rem;
  z-index: 200;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 0;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  height: var(--header-height);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  color: var(--color-dark);
  font-size: 1.25rem;
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
}

.logo img {
  width: 52px;
  height: 52px;
  object-fit: contain;
  border-radius: 0.25rem;
}

.logo__text {
  display: none;
}

@media (min-width: 420px) {
  .logo__text {
    display: inline;
  }
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle__bar {
  display: block;
  width: 28px;
  height: 3px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.nav {
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  max-height: 0;
  overflow: hidden;
  transition: max-height 250ms ease;
}

.nav.is-open {
  max-height: 400px;
}

.nav__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
}

.nav__link {
  display: block;
  padding: 0.75rem 0;
  color: var(--color-dark);
  font-weight: 500;
  font-size: 1.05rem;
}

@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }

  .nav {
    position: static;
    max-height: none;
    border: none;
    overflow: visible;
  }

  .nav__list {
    flex-direction: row;
    align-items: center;
    gap: 1.75rem;
    padding: 0;
  }

  .nav__link {
    padding: 0.5rem 0;
    font-size: 1rem;
  }
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.4;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
  min-height: 48px;
  min-width: 48px;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

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

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

.btn--secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

.btn--small {
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
}

.btn--whatsapp {
  background: #25d366;
  color: var(--color-white);
  border-color: #25d366;
  width: 100%;
  max-width: 300px;
}

.btn--whatsapp:hover {
  background: #128c7e;
  border-color: #128c7e;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-white) 60%);
  padding: 4rem 0 5rem;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.hero__content {
  z-index: 1;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  color: var(--color-dark);
  line-height: 1.15;
  margin-bottom: 1.25rem;
  font-weight: 800;
}

.hero__subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--color-text);
  max-width: 45ch;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hero__actions .btn {
  width: 100%;
}

@media (min-width: 480px) {
  .hero__actions {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .hero__actions .btn {
    width: auto;
    flex: 1 1 auto;
  }
}

.hero__visual {
  position: relative;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.25;
}

.shape--1 {
  width: 220px;
  height: 220px;
  background: var(--color-primary);
  top: 0;
  right: 10%;
}

.shape--2 {
  width: 160px;
  height: 160px;
  background: #93c5fd;
  bottom: 0;
  left: 5%;
}

.shape--3 {
  width: 100px;
  height: 100px;
  background: #bfdbfe;
  top: 40%;
  left: 35%;
}

@media (min-width: 768px) {
  .hero {
    padding: 6rem 0 7rem;
  }

  .hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .hero__visual {
    height: 360px;
  }
}

/* Secciones */
.section {
  padding: 4rem 0;
}

.section:nth-of-type(even) {
  background: var(--color-bg);
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 2.5rem;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--color-dark);
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.section__subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
}

/* About */
.about {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.about__content p {
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
}

.about__message {
  color: var(--color-primary-dark);
  font-weight: 500;
  border-left: 4px solid var(--color-primary);
  padding-left: 1rem;
}

.data-list {
  list-style: none;
  margin-top: 1.5rem;
  display: grid;
  gap: 0.75rem;
}

.data-list li {
  padding: 0.75rem 1rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.about__visual {
  display: flex;
  justify-content: center;
}

.about__badge {
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  width: 180px;
  height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.about__badge-year {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.about__badge-text {
  font-size: 0.95rem;
  margin-top: 0.5rem;
  max-width: 120px;
}

@media (min-width: 768px) {
  .about {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

/* Servicios */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.service-card__icon {
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.service-card__title {
  font-size: 1.25rem;
  color: var(--color-dark);
  margin-bottom: 0.75rem;
}

.service-card__text {
  color: var(--color-text-light);
  font-size: 0.98rem;
}

/* Proceso */
.process {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  counter-reset: step;
}

.process__step {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.process__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.process__step h3 {
  color: var(--color-dark);
  margin-bottom: 0.75rem;
  font-size: 1.15rem;
}

.process__step p {
  color: var(--color-text-light);
  font-size: 0.98rem;
}

/* Why */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.why-item {
  padding: 1.5rem;
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

.why-item strong {
  display: block;
  color: var(--color-primary-dark);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.why-item p {
  color: var(--color-text-light);
  font-size: 0.98rem;
}

/* Contacto */
.section--contact {
  background: var(--color-white);
}

.contact {
  display: grid;
  gap: 2.5rem;
  align-items: start;
}

.contact__info {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 1px solid var(--color-border);
}

.contact__org {
  font-size: 1.35rem;
  color: var(--color-dark);
  margin-bottom: 1rem;
}

.contact__address {
  font-style: normal;
  color: var(--color-text);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
}

.contact__item {
  margin-bottom: 0.75rem;
  font-size: 1.05rem;
}

.contact__item a {
  font-weight: 500;
}

.contact__form {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}

.form__group {
  margin-bottom: 1.25rem;
}

.form__group label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--color-dark);
  font-size: 0.95rem;
}

.form__group input,
.form__group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form__group input:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 87, 184, 0.15);
}

.form__group input:user-invalid,
.form__group textarea:user-invalid {
  border-color: var(--color-error);
}

.form__group--checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.form__group--checkbox input {
  width: auto;
  min-width: 20px;
  min-height: 20px;
  margin-top: 0.2rem;
}

.form__group--checkbox label {
  margin: 0;
  font-weight: 400;
  font-size: 0.95rem;
}

.form__feedback {
  min-height: 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 1rem;
  color: var(--color-error);
}

.form__feedback.is-success {
  color: var(--color-success);
}

@media (min-width: 768px) {
  .contact {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

/* Footer */
.footer {
  background: var(--color-dark);
  color: #cbd5e1;
  padding: 2.5rem 0;
  font-size: 0.95rem;
}

.footer a {
  color: #93c5fd;
}

.footer__legal {
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.footer__company {
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.1rem;
}

.footer__links {
  margin-bottom: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.footer__copy {
  color: #94a3b8;
  font-size: 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.25rem;
}

/* Páginas legales */
.legal {
  padding: 3rem 0;
  max-width: 800px;
  margin: 0 auto;
}

.legal h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  color: var(--color-dark);
  margin-bottom: 1rem;
}

.legal h2 {
  font-size: 1.25rem;
  color: var(--color-dark);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.legal p,
.legal li {
  margin-bottom: 1rem;
  color: var(--color-text);
}

.legal ul {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.legal__back {
  display: inline-block;
  margin-top: 2rem;
  font-weight: 500;
}

/* Utilidades */
.text-center {
  text-align: center;
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .hero__title {
    font-size: 2rem;
  }
}