:root {
  --color-text-primary: #111827;
  --color-text-secondary: #4b5563;
  --color-text-muted: #6b7280;
  --color-text-light: #9ca3af;
  --color-bg-white: #ffffff;
  --color-bg-light: #f8f9fa;
  --color-bg-gray: #f3f4f6;
  --color-bg-dark: #111827;
  --color-border: #e5e7eb;
  --color-accent: #fdbf00;
  --color-accent-dark: #c99500;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--color-text-primary);
  background-color: var(--color-bg-white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
}

.section-padding {
  padding: 144px 0;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--color-bg-dark);
  color: var(--color-bg-white);
  padding: 16px 28px;
  font-weight: 500;
  transition: background-color 0.3s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: #374151;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: transparent;
  color: var(--color-text-primary);
  border: 1px solid #d1d5db;
  padding: 16px 28px;
  font-weight: 500;
  transition: background-color 0.3s;
}

.btn-outline:hover {
  background-color: var(--color-bg-gray);
}

.overline {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 12px;
}

.overline::before {
  content: '';
  display: block;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.h2-title {
  font-size: 3rem;
  font-weight: 400;
  line-height: 1.1;
  margin-top: 20px;
  margin-bottom: 24px;
}

.h3-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.desc-text {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 600px;
}

@media (max-width: 1024px) {
  .section-padding {
    padding: 80px 0;
  }
  .h2-title {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  .h2-title {
    font-size: 2rem;
  }
}
/* ===== Mobile menu, links & form states (added) ===== */
.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0;
  z-index: 1100;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(17, 24, 39, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease;
  z-index: 1050;
}
.mobile-nav-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: min(78vw, 320px);
  background-color: var(--color-bg-white);
  z-index: 1060;
  padding: 96px 32px 32px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  box-shadow: -8px 0 24px rgba(0,0,0,0.08);
}
.mobile-nav.is-open {
  transform: translateX(0);
}
.mobile-nav a {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-text-primary);
}
.mobile-nav a.btn-primary {
  color: var(--color-bg-white);
  justify-content: center;
}
.mobile-nav .btn-primary {
  margin-top: 12px;
}

@media (max-width: 1024px) {
  .menu-toggle {
    display: flex;
  }
}

.contact-method a,
.contact-list a {
  color: inherit;
  transition: color 0.3s;
}
.contact-method a:hover {
  color: var(--color-accent-dark);
}
.contact-list a:hover {
  color: var(--color-accent);
}

.form-feedback {
  display: none;
  align-items: flex-start;
  gap: 14px;
  padding: 20px;
  border: 1px solid #34d399;
  background-color: #ecfdf5;
  color: #065f46;
}
.form-feedback.is-error {
  border-color: #f87171;
  background-color: #fef2f2;
  color: #991b1b;
}
.form-feedback.is-visible {
  display: flex;
}
.form-feedback-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  margin-top: 2px;
}
.form-feedback-title {
  font-weight: 600;
  margin-bottom: 4px;
}
.form-feedback-text {
  font-size: 0.875rem;
}
.contacto-form.is-hidden {
  display: none;
}
.field-error {
  font-size: 0.75rem;
  color: #dc2626;
  display: none;
}
.form-group.has-error input,
.form-group.has-error textarea {
  border-color: #dc2626;
}
.form-group.has-error .field-error {
  display: block;
}

/* ===== Mobile fine-tuning ===== */
@media (max-width: 640px) {
  .hero-image-wrapper {
    height: 360px;
  }
  .nosotros-image-col {
    min-height: 320px;
  }
  .aplicaciones-image {
    min-height: 320px;
  }
  .calidad-image-col {
    height: 320px;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .h2-title {
    font-size: 1.75rem;
  }
  .cap-value {
    font-size: 4rem;
  }
  .section-padding {
    padding: 56px 0;
  }
  .footer-status {
    flex-wrap: wrap;
  }
  .header-btn {
    display: none;
  }
}

@media (max-width: 420px) {
  .stat-card {
    padding: 20px;
  }
  .stat-value {
    font-size: 2rem;
  }
}