/*
 * Author: Pyrukent
 * gresaax/assets/css/main.css
 * Proyecto GRESAAX S.A. DE C.V.
 * Versión: 1.0
 */

:root {
  --color-primary: #1A1A1A;
  --color-secondary: #8B4513;
  --color-accent: #DAA520;
  --color-neutral: #F5F5DC;
  --color-white: #FFFFFF;
  --color-gray: #666666;
  --color-light-gray: #F8F8F8;
  
  --font-primary: 'Inter', system-ui, sans-serif;
  --font-secondary: 'Playfair Display', serif;
  
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--color-primary);
  background: var(--color-white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* NAVEGACIÓN */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: var(--color-white);
  box-shadow: var(--shadow);
  z-index: 1000;
  transition: var(--transition);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.logo-img {
  height: 50px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  text-decoration: none;
  color: var(--color-primary);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-secondary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--color-primary);
  margin: 3px 0;
  transition: var(--transition);
}

/* HERO */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--color-neutral) 0%, var(--color-white) 100%);
  display: flex;
  align-items: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: -20%;
  width: 60%;
  height: 100%;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><rect width="20" height="100" fill="%23DAA520" opacity="0.1"/><rect x="40" width="15" fill="%238B4513" opacity="0.15"/><rect x="70" width="25" fill="%23DAA520" opacity="0.08"/></svg>');
  background-size: 200px 100%;
  transform: skewX(-15deg);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  padding: 0 2rem;
}

.hero h1 {
  font-family: var(--font-secondary);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
}

.highlight {
  color: var(--color-secondary);
  position: relative;
}

.highlight::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 8px;
  background: var(--color-accent);
  opacity: 0.3;
  z-index: -1;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: var(--color-gray);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
}

.btn-primary,
.btn-secondary {
  padding: 1rem 2rem;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: #6B3410;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--color-secondary);
  border: 2px solid var(--color-secondary);
}

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

.hero-stats {
  display: flex;
  gap: 2rem;
}

.stat {
  text-align: center;
}

.stat .number {
  display: block;
  font-family: var(--font-secondary);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
}

.stat .label {
  font-size: 0.9rem;
  color: var(--color-gray);
}

/* ABOUT */
.about {
  padding: 5rem 0;
  background: var(--color-white);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about h2 {
  font-family: var(--font-secondary);
  font-size: 2.5rem;
  margin-bottom: 2rem;
  color: var(--color-primary);
}

.about p {
  margin-bottom: 1.5rem;
  color: var(--color-gray);
  font-size: 1.1rem;
}

.certifications {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.cert {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-secondary);
  font-weight: 500;
}

.cert-icon {
  font-size: 1.2rem;
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.value-box {
  background: var(--color-light-gray);
  padding: 2rem;
  border-radius: 12px;
  border-left: 4px solid var(--color-accent);
}

.value-box h3 {
  font-family: var(--font-secondary);
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.value-box p {
  color: var(--color-gray);
  margin: 0;
}

/* PRODUCTOS */
.products {
  padding: 5rem 0;
  background: var(--color-neutral);
}

.products h2 {
  font-family: var(--font-secondary);
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--color-primary);
}

.product-categories {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.category-btn {
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--color-secondary);
  background: transparent;
  color: var(--color-secondary);
  border-radius: 25px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

.category-btn.active,
.category-btn:hover {
  background: var(--color-secondary);
  color: var(--color-white);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.product-card {
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.product-image {
  height: 200px;
  background: linear-gradient(45deg, var(--color-secondary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 3rem;
}

.product-info {
  padding: 1.5rem;
}

.product-info h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.product-info p {
  color: var(--color-gray);
  margin-bottom: 1rem;
}

.product-specs {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--color-secondary);
}

/* SERVICIOS */
.services {
  padding: 5rem 0;
  background: var(--color-white);
}

.services h2 {
  font-family: var(--font-secondary);
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--color-primary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  text-align: center;
  padding: 2rem;
  border-radius: 12px;
  background: var(--color-light-gray);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.service-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.service-card p {
  color: var(--color-gray);
}

/* CONTACTO */
.contact {
  padding: 5rem 0;
  background: var(--color-primary);
  color: var(--color-white);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact h2 {
  font-family: var(--font-secondary);
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.contact p {
  margin-bottom: 2rem;
  opacity: 0.9;
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-item .icon {
  font-size: 1.2rem;
  color: var(--color-accent);
}

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

.form-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  padding: 1rem;
  border: none;
  border-radius: 8px;
  background: var(--color-white);
  color: var(--color-primary);
  font-size: 1rem;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 3px solid var(--color-accent);
}

.btn-submit {
  padding: 1rem 2rem;
  background: var(--color-accent);
  color: var(--color-primary);
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
}

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

/* FOOTER */
.footer {
  background: var(--color-primary);
  padding: 2rem 0;
  border-top: 1px solid #333;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-text {
  color: var(--color-neutral);
  text-align: right;
}

.footer-text p {
  margin: 0.25rem 0;
  font-size: 0.9rem;
}