/* ========================================
   VARIABLES Y RESET
   ======================================== */

:root {
  /* Colores - Paleta moderna y profesional */
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #3b82f6;
  --primary-lighter: #dbeafe;
  
  --secondary: #1f2937;
  --secondary-light: #4b5563;
  
  --success: #10b981;
  --warning: #f59e0b;
  
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  --bg: #ffffff;
  --surface: #f9fafb;
  --surface-alt: #f3f4f6;
  --border: #e5e7eb;
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  
  /* Espacios */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-base: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  
  /* Tipografía */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --font-mono: 'SFMono-Regular', 'Consolas', 'Liberation Mono', 'Menlo', monospace;
  
  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 999px;
  
  /* Sombras */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Layout */
  --max-width: 1200px;
  --max-width-sm: 960px;
  
  /* Transiciones */
  --transition: all 0.3s ease;
  --transition-fast: all 0.15s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg);
}

/* ========================================
   TIPOGRAFÍA
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 {
  font-size: 48px;
  margin-bottom: var(--spacing-base);
}

h2 {
  font-size: 36px;
  margin-bottom: var(--spacing-base);
}

h3 {
  font-size: 24px;
  margin-bottom: var(--spacing-sm);
}

h4 {
  font-size: 18px;
}

p {
  margin: 0 0 var(--spacing-base) 0;
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--primary-dark);
}

/* ========================================
   CONTENEDOR Y GRID
   ======================================== */

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

.section {
  padding: var(--spacing-2xl) 0;
}

.section__header {
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.section__header h2 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-base);
}

.section__header p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   HEADER
   ======================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  padding: var(--spacing-base) 0;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--spacing-base);
  padding-right: var(--spacing-base);
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--primary);
  font-weight: 800;
  font-size: 18px;
  transition: var(--transition-fast);
}

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

.brand__logo {
  height: 48px;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.brand__name {
  color: var(--text-primary);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 16px;
}

.nav {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
  flex-wrap: wrap;
}

.nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.nav a:hover {
  color: var(--primary);
  background-color: var(--primary-lighter);
}

/* ========================================
   HERO
   ======================================== */

.hero {
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(135deg, var(--primary-lighter) 0%, rgba(219, 234, 254, 0.3) 100%);
  border-bottom: 1px solid var(--border);
}

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

.hero__content h1 {
  font-size: 56px;
  line-height: 1.15;
  margin-bottom: var(--spacing-base);
  color: var(--text-primary);
}

.highlight {
  color: var(--primary);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  max-width: 550px;
}

.hero__cta {
  display: flex;
  gap: var(--spacing-base);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.hero__note {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  gap: var(--spacing-base);
}

.hero__image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background: var(--surface);
  min-height: 280px;
  height: 280px;
}

.hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ========================================
   BOTONES
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn--primary {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.btn--primary:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--whatsapp {
  background-color: #25D366;
  color: white;
  border-color: #25D366;
  box-shadow: var(--shadow-md);
}

.btn--whatsapp:hover {
  background-color: #1fa85a;
  border-color: #1fa85a;
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  color: white;
}

.btn--whatsapp:active {
  transform: translateY(0);
}

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

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

.btn--ghost {
  background-color: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

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

.btn--large {
  padding: 14px 28px;
  font-size: 16px;
}

.btn svg {
  width: 20px;
  height: 20px;
}

.btn__whatsapp-icon {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

/* ========================================
   SERVICIOS
   ======================================== */

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.service__card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: var(--transition);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.service__card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.service__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--spacing-base);
  background: linear-gradient(135deg, var(--primary-lighter), var(--primary-lighter));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.service__icon svg {
  width: 28px;
  height: 28px;
  stroke-width: 2;
}

.service__card h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.service__card p {
  font-size: 15px;
  color: var(--text-secondary);
}

/* ========================================
   FAQ
   ======================================== */

.faq-section {
  background-color: var(--surface);
}

.faq__list {
  display: grid;
  gap: var(--spacing-base);
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.faq__item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.faq__item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-base) var(--spacing-lg);
  font-weight: 600;
  color: var(--text-primary);
  user-select: none;
  transition: var(--transition-fast);
}

.faq__item summary:hover {
  background-color: var(--surface);
  color: var(--primary);
}

.faq__item summary::-webkit-details-marker {
  display: none;
}

.faq__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-left: var(--spacing-base);
  color: var(--primary);
  transition: var(--transition-fast);
  stroke-width: 2;
}

.faq__item[open] .faq__icon {
  transform: rotate(180deg);
}

.faq__content {
  padding: 0 var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  line-height: 1.8;
}

.faq__content p {
  margin: 0;
}

/* ========================================
   CONTACTO
   ======================================== */

.contact-section {
  background-color: var(--bg);
}

.contact__wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact__card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

.contact__card h3 {
  color: var(--text-primary);
  font-size: 20px;
  margin-bottom: var(--spacing-base);
}

.contact__card > p {
  font-size: 15px;
  margin-bottom: var(--spacing-lg);
}

.contact__buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-base);
  margin-bottom: var(--spacing-lg);
}

.contact__buttons .btn {
  width: 100%;
  justify-content: center;
}

.contact__meta {
  display: grid;
  gap: var(--spacing-base);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border);
}

.contact__meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.contact__meta-item strong {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 600;
}

.contact__meta-item span {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ========================================
   FORMULARIO
   ======================================== */

.contact__form {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-base);
}

.form__group:last-of-type {
  margin-bottom: var(--spacing-lg);
}

.form__group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.required {
  color: #ef4444;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-base);
}

input[type="text"],
input[type="tel"],
input[type="email"],
textarea {
  padding: 12px var(--spacing-base);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 15px;
  color: var(--text-primary);
  background-color: var(--surface);
  transition: var(--transition-fast);
}

input[type="text"]:focus,
input[type="tel"]:focus,
input[type="email"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  background-color: var(--bg);
  box-shadow: 0 0 0 3px var(--primary-lighter);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

textarea {
  resize: vertical;
  min-height: 140px;
}

.form__hint {
  font-size: 13px;
  color: var(--text-muted);
}

.form__note {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: var(--spacing-base);
  text-align: center;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
  border-top: 1px solid var(--border);
  background-color: var(--surface);
}

.footer .container {
  display: flex;
  flex-direction: column;
}

.footer__content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  align-items: start;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-base);
}

.footer__logo {
  height: 100px;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.footer__brand-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer__title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.footer__tagline {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.footer__section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-base);
}

.footer__section h4 {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__text {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition-fast);
  width: fit-content;
}

.footer__link:hover {
  color: var(--primary-dark);
  transform: translateX(2px);
}

.footer__link--whatsapp {
  color: #25D366;
}

.footer__link--whatsapp:hover {
  color: #1fa85a;
}

.footer__link svg {
  flex-shrink: 0;
}

.footer__whatsapp-icon {
  width: 18px;
  height: 18px;
  object-fit: contain;
}

.footer__divider {
  height: 1px;
  background-color: var(--border);
  margin: var(--spacing-base) 0;
}

.footer__bottom {
  text-align: center;
}

.footer__copyright {
  margin: 0;
  font-size: 12px;
  color: var(--text-muted);
}

.footer__copyright-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-fast);
}

.footer__copyright-link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
  h1 {
    font-size: 42px;
  }

  h2 {
    font-size: 32px;
  }

  .hero .container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .hero__content h1 {
    font-size: 42px;
  }

  .hero__image {
    min-height: 350px;
  }

  .services__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  .contact__wrapper {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

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

@media (max-width: 768px) {
  :root {
    --spacing-2xl: 48px;
    --spacing-xl: 32px;
  }

  .header__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-base);
    min-height: auto;
  }

  .brand {
    display: flex;
    gap: var(--spacing-xs);
    width: 100%;
    align-items: center;
  }

  .brand__logo {
    height: 40px;
  }

  .brand__name {
    font-size: 14px;
  }

  .nav {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
    justify-content: flex-start;
  }

  .nav a {
    padding: 8px 12px;
    font-size: 13px;
  }

  .service__card {
    text-align: center;
  }

  .service__icon {
    margin-left: auto;
    margin-right: auto;
  }

  h1 {
    font-size: 32px;
  }

  h2 {
    font-size: 28px;
  }

  .hero {
    padding: var(--spacing-xl) 0;
  }

  .hero__content h1 {
    font-size: 36px;
  }

  .hero__subtitle {
    font-size: 16px;
  }

  .hero__cta {
    flex-direction: column;
  }

  .hero__cta .btn {
    width: 100%;
    justify-content: center;
  }

  .hero__image {
    min-height: 300px;
  }

  .section {
    padding: var(--spacing-xl) 0;
  }

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

  .faq__list {
    max-width: 100%;
  }

  .contact__card {
    padding: var(--spacing-base);
  }

  .contact__buttons {
    flex-direction: row;
    gap: var(--spacing-sm);
  }

  .contact__buttons .btn {
    width: 100%;
    font-size: 14px;
    padding: 12px 16px;
  }

  .contact__form {
    padding: var(--spacing-base);
  }

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

  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-base);
  }

  .footer__brand {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--spacing-base);
  }

  .footer__logo {
    height: 80px;
    flex-shrink: 0;
  }

  .footer__brand-text {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-2xl: 32px;
    --spacing-xl: 24px;
    --spacing-lg: 16px;
  }

  .container {
    padding: 0 var(--spacing-base);
  }

  .header__inner {
    padding: var(--spacing-sm) var(--spacing-base);
    min-height: auto;
    gap: var(--spacing-xs);
  }

  .brand {
    gap: var(--spacing-xs);
    width: 100%;
    align-items: center;
  }

  .brand__logo {
    height: 36px;
    flex-shrink: 0;
  }

  .brand__name {
    font-size: 11px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
  }

  .nav {
    gap: 6px;
    width: 100%;
    justify-content: flex-start;
  }

  .nav a {
    padding: 6px 10px;
    font-size: 11px;
  }

  h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 24px;
  }

  .hero {
    padding: var(--spacing-lg) 0;
  }

  .hero__content h1 {
    font-size: 28px;
    margin-bottom: var(--spacing-sm);
  }

  .hero__subtitle {
    font-size: 15px;
    margin-bottom: var(--spacing-base);
  }

  .hero__cta {
    margin-bottom: var(--spacing-base);
  }

  .hero__note {
    font-size: 12px;
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .section__header {
    margin-bottom: var(--spacing-lg);
  }

  .service__card {
    padding: var(--spacing-base);
    text-align: center;
  }

  .service__icon {
    margin-left: auto;
    margin-right: auto;
  }

  .faq__item summary {
    padding: var(--spacing-base);
  }

  .faq__content {
    padding: 0 var(--spacing-base) var(--spacing-base) var(--spacing-base);
  }

  .contact__card h3 {
    font-size: 18px;
  }

  .form__group label {
    font-size: 13px;
  }

  input[type="text"],
  input[type="tel"],
  input[type="email"],
  textarea {
    font-size: 16px; /* Previene zoom en iOS */
    padding: 12px var(--spacing-sm);
  }

  .btn {
    padding: 12px 16px;
    font-size: 14px;
  }

  .btn--large {
    padding: 14px 20px;
    font-size: 15px;
  }

  .hero__image {
    min-height: 250px;
  }

  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-base);
  }

  .footer__brand {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .footer__logo {
    height: 60px;
  }

  .footer__title {
    font-size: 14px;
  }

  .footer__tagline {
    font-size: 12px;
  }

  .footer__section h4 {
    font-size: 12px;
  }

  .footer__text {
    font-size: 12px;
  }

  .footer__link {
    font-size: 12px;
  }

  .footer__copyright {
    font-size: 11px;
  }
}

/* ========================================
   UTILIDADES
   ======================================== */

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

.text-muted {
  color: var(--text-muted);
}

.mt-xs {
  margin-top: var(--spacing-xs);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-base {
  margin-top: var(--spacing-base);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-xs {
  margin-bottom: var(--spacing-xs);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-base {
  margin-bottom: var(--spacing-base);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}