:root {
  --primary: #0D1B2A;
  --secondary: #1B263B;
  --accent: #D4A017;
  --white: #FFFFFF;
  --light: #F5F5F5;
  --text-light: #666666;
  --shadow-sm: 0 2px 8px rgba(13, 27, 42, 0.08);
  --shadow-md: 0 4px 16px rgba(13, 27, 42, 0.12);
  --shadow-lg: 0 8px 24px rgba(13, 27, 42, 0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Montserrat', sans-serif;
  color: var(--primary);
  background: var(--white);
  line-height: 1.6;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  background: var(--light);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo-container {
  display: flex;
  align-items: center;
}

.logo-container a {
  text-decoration: none;
}

.logo {
  height: 70px;
  object-fit: contain;
}

.navbar {
  display: flex;
  gap: 30px;
  align-items: center;
}

.navbar.active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 70px;
  left: 0;
  right: 0;
  background: var(--light);
  padding: 20px;
  gap: 15px;
  box-shadow: var(--shadow-md);
  z-index: 99;
}

.nav-link {
  text-decoration: none;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
  padding: 10px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--primary);
  z-index: 101;
}

/* ═══════════════════════════════════════════════════════════════════════
   PÁGINA DE CONTACTO
   ═════════════════════════════════════════════════════════════════════ */

.contact-page {
  min-height: 100vh;
  background: var(--light);
}

.contact-header {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 80px 40px;
  text-align: center;
}

.contact-header h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 15px;
}

.contact-header p {
  font-size: 1.1rem;
  opacity: 0.95;
  max-width: 600px;
  margin: 0 auto;
}

.contact-container {
  max-width: 900px;
  margin: -50px auto 80px;
  padding: 0 40px;
}

.form-wrapper {
  background: white;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 60px;
}

.form-section {
  margin-bottom: 40px;
}

.form-section h3 {
  font-size: 1.3rem;
  color: var(--primary);
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 2px solid var(--accent);
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--primary);
  font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.95rem;
  transition: var(--transition);
  background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
  font-family: 'Montserrat', sans-serif;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.service-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.service-option {
  position: relative;
}

.service-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.service-option label {
  display: block;
  padding: 20px;
  border: 2px solid #ddd;
  border-radius: 8px;
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
  background: var(--light);
  margin: 0;
  font-weight: 600;
}

.service-option input[type="radio"]:checked + label {
  border-color: var(--accent);
  background: rgba(212, 160, 23, 0.1);
  color: var(--primary);
}

.submit-section {
  display: flex;
  gap: 15px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 2px solid var(--light);
}

.btn-submit {
  background: var(--accent);
  color: var(--primary);
  border: none;
  padding: 14px 40px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex: 1;
}

.btn-submit:hover {
  background: #B8860B;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-back {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  padding: 12px 40px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.success-message {
  display: none;
  background: #4caf50;
  color: white;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  text-align: center;
  animation: slideDown 0.3s ease;
}

.error-message {
  display: none;
  background: #f44336;
  color: white;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  text-align: center;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.loading {
  display: none;
  text-align: center;
  color: var(--accent);
  padding: 30px;
}

.loader {
  border: 4px solid var(--light);
  border-top: 4px solid var(--accent);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto 15px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.info-box {
  background: rgba(212, 160, 23, 0.1);
  border-left: 4px solid var(--accent);
  padding: 20px;
  border-radius: 6px;
  margin-bottom: 30px;
}

.info-box p {
  margin: 0;
  color: var(--primary);
  font-weight: 500;
}

/* ═══════════════════════════════════════════════════════════════════════
   FOOTER
   ═════════════════════════════════════════════════════════════════════ */

.footer {
  background: var(--primary);
  color: white;
  padding: 0;
  margin-top: 80px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-divider {
  height: 1px;
  background: rgba(212, 160, 23, 0.2);
  margin: 0 40px;
}

.footer-bottom {
  padding: 30px 40px;
  text-align: center;
  border-top: 1px solid rgba(212, 160, 23, 0.2);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════════════════════════════
   RESPONSIVE DESIGN
   ═════════════════════════════════════════════════════════════════════ */

@media (max-width: 900px) {
  .header {
    padding: 15px 30px;
  }

  .navbar {
    display: none;
  }

  .navbar.active {
    display: flex;
  }

  .menu-btn {
    display: block;
  }

  .contact-header {
    padding: 50px 20px;
  }

  .contact-header h1 {
    font-size: 2rem;
  }

  .contact-container {
    margin: -40px 20px 60px;
  }

  .form-wrapper {
    padding: 40px 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .service-options {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .header {
    padding: 12px 20px;
  }

  .logo {
    height: 55px;
  }

  .navbar.active {
    top: 60px;
  }

  .contact-header {
    padding: 40px 20px;
  }

  .contact-header h1 {
    font-size: 1.8rem;
  }

  .contact-header p {
    font-size: 1rem;
  }

  .contact-container {
    margin: -30px 15px 40px;
    padding: 0;
  }

  .form-wrapper {
    padding: 30px 15px;
    border-radius: 8px;
  }

  .form-section h3 {
    font-size: 1.1rem;
    margin-bottom: 20px;
  }

  .form-group label {
    font-size: 0.9rem;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    padding: 10px 12px;
    font-size: 0.9rem;
  }

  .form-group textarea {
    min-height: 100px;
  }

  .service-options {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .service-option label {
    padding: 15px;
    font-size: 0.9rem;
  }

  .submit-section {
    flex-direction: column;
    gap: 12px;
  }

  .btn-submit,
  .btn-back {
    width: 100%;
    padding: 12px 20px;
    font-size: 0.9rem;
  }

  .footer-divider,
  .footer-bottom {
    margin: 0 20px;
  }

  .footer-bottom {
    padding: 20px;
  }
}

@media (max-width: 400px) {
  .contact-header {
    padding: 30px 15px;
  }

  .contact-header h1 {
    font-size: 1.5rem;
  }

  .form-wrapper {
    padding: 20px 15px;
  }

  .form-section {
    margin-bottom: 30px;
  }

  .form-section h3 {
    font-size: 1rem;
    margin-bottom: 15px;
  }

  .submit-section {
    margin-top: 30px;
    padding-top: 20px;
  }
}

@media (max-width: 1024px) {
  .lightbox-btn {
    display: none;  /* Botones desaparecen en tablet/móvil */
  }
}