/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #0A1E35;
  --primary-light: #132d4f;
  --accent: #73D3FF;
  --accent-hover: #5bc4f5;
  --dark: #171717;
  --dark-card: #1a1a2e;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-300: #d4d4d4;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --white: #ffffff;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --transition: 200ms ease;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

body {
  font-family: 'Roboto', Arial, Helvetica, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
}

/* ============================================
   Header
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.5px;
}

.header-nav {
  display: flex;
  gap: 8px;
}

.nav-link {
  color: rgba(255,255,255,0.75);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--white);
  background: rgba(115, 211, 255, 0.15);
}

.nav-link.active {
  background: rgba(115, 211, 255, 0.25);
}

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

.menu-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Hero / Inicio
   ============================================ */
.hero {
  padding-top: 64px;
}

.hero-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #16213e 50%, #0f3460 100%);
  padding: 60px 20px;
  text-align: center;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.hero-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(115,211,255,0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(115,211,255,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-banner-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--accent);
  font-weight: 400;
}

.hero-info {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px;
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.hero-info-text {
  flex: 1;
}

.hero-info .section-title {
  margin-bottom: 12px;
}

.hero-description {
  color: var(--gray-600);
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.hero-cta-container {
  flex-shrink: 0;
  text-align: center;
}

.btn-catalog {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--accent), #4db8e8);
  color: var(--primary);
  font-size: 1.05rem;
  font-weight: 600;
  padding: 16px 32px;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 15px rgba(115,211,255,0.4);
  white-space: nowrap;
  animation: pulse-glow 2s ease-in-out infinite;
}

.btn-catalog:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(115,211,255,0.6);
}

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

.btn-icon {
  width: 22px;
  height: 22px;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 4px 15px rgba(115,211,255,0.4); }
  50% { box-shadow: 0 4px 25px rgba(115,211,255,0.7); }
}

.cta-hint {
  font-size: 0.8rem;
  color: var(--gray-400);
  margin-top: 10px;
}

/* Categories */
.categories-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 24px;
}

.categories-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}

.categories-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pill {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid var(--gray-200);
  color: var(--gray-600);
  background: var(--white);
  user-select: none;
}

.pill:hover {
  border-color: var(--accent);
  color: var(--primary);
}

.pill.active {
  background: var(--accent);
  color: var(--primary);
  border-color: var(--accent);
  font-weight: 600;
}

/* Products Grid */
.products-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 48px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
  cursor: pointer;
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.product-img {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.product-img svg {
  width: 48px;
  height: 48px;
  opacity: 0.8;
}

.product-info {
  padding: 14px;
}

.product-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 4px;
}

.product-desc {
  font-size: 0.8rem;
  color: var(--gray-500);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 8px;
}

.product-price {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-hover);
}

/* ============================================
   Section: Sobre Nosotros
   ============================================ */
.section-about {
  background: var(--gray-100);
  padding: 64px 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.about-text p {
  color: var(--gray-600);
  margin-bottom: 16px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all var(--transition);
  border: 1px solid var(--gray-200);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 40px;
  height: 40px;
  background: rgba(115,211,255,0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent-hover);
}

.feature-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 0.82rem;
  color: var(--gray-500);
  line-height: 1.5;
}

/* ============================================
   Section: Contacto
   ============================================ */
.section-contact {
  padding: 64px 0;
  background: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(115,211,255,0.12);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent-hover);
}

.contact-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 2px;
}

.contact-item p {
  font-size: 0.9rem;
  color: var(--gray-500);
}

.contact-form-container {
  background: var(--gray-100);
  border-radius: var(--radius-xl);
  padding: 32px;
}

.contact-form-container h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 20px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-form input,
.contact-form textarea {
  padding: 12px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9rem;
  background: var(--white);
  color: var(--dark);
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
}

.btn-submit {
  background: var(--primary);
  color: var(--white);
  border: none;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

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

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--primary);
  color: rgba(255,255,255,0.7);
  padding: 40px 0 24px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.footer-brand {
  margin-bottom: 20px;
}

.footer-logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
}

.footer-brand p {
  font-size: 0.85rem;
  margin-top: 6px;
}

.footer-links {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
}

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 300ms ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 32px;
  max-width: 440px;
  width: 100%;
  position: relative;
  transform: translateY(20px) scale(0.97);
  transition: transform 300ms ease;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--gray-400);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.modal-close:hover {
  background: var(--gray-100);
  color: var(--dark);
}

.modal-header {
  text-align: center;
  margin-bottom: 28px;
}

.modal-icon {
  width: 48px;
  height: 48px;
  color: var(--accent);
  margin-bottom: 12px;
}

.modal-header h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.modal-header p {
  font-size: 0.9rem;
  color: var(--gray-500);
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
}

.input-phone {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  color: var(--dark);
  background: var(--white);
  transition: border-color var(--transition);
}

.input-phone:focus {
  border-color: var(--accent);
}

.input-phone.error {
  border-color: #ef4444;
}

.form-error {
  font-size: 0.78rem;
  color: #ef4444;
  font-weight: 500;
}

.form-hint {
  font-size: 0.78rem;
  color: var(--gray-400);
}

.modal-form select {
  padding: 12px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--dark);
  background: var(--white);
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23737373' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
}

.modal-form select:focus {
  border-color: var(--accent);
}

.btn-submit-catalog {
  background: linear-gradient(135deg, var(--accent), #4db8e8);
  color: var(--primary);
  border: none;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-submit-catalog:hover {
  box-shadow: 0 4px 15px rgba(115,211,255,0.4);
}

.btn-submit-catalog:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.spinner {
  width: 18px;
  height: 18px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Modal success / error states */
.modal-success,
.modal-error {
  text-align: center;
  padding: 20px 0;
}

.modal-success h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary);
  margin: 12px 0 6px;
}

.modal-success p {
  font-size: 0.9rem;
  color: var(--gray-500);
  margin-bottom: 20px;
}

.modal-error h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #ef4444;
  margin: 12px 0 6px;
}

.modal-error p {
  font-size: 0.9rem;
  color: var(--gray-500);
  margin-bottom: 20px;
}

.btn-close-success,
.btn-close-error {
  background: var(--primary);
  color: var(--white);
  border: none;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-close-success:hover,
.btn-close-error:hover {
  background: var(--primary-light);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-info {
    flex-direction: column;
  }

  .hero-cta-container {
    width: 100%;
  }

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

@media (max-width: 640px) {
  .header-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    padding: 16px 20px;
    gap: 4px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 300ms ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  }

  .header-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-banner {
    padding: 40px 20px;
  }

  .section-title {
    font-size: 1.4rem;
  }

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

  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .product-img {
    height: 100px;
  }

  .modal {
    padding: 24px;
  }
}