/* ============================================
   HMMC - Repuestos Automotrices
   Estilos principales - CSS Puro
   ============================================ */

/* ---------- Custom Properties ---------- */
:root {
  /* Colores */
  --color-primary: #DC2626;
  --color-primary-dark: #B91C1C;
  --color-primary-light: #EF4444;
  --color-black: #0F0F0F;
  --color-gray-900: #1A1A1A;
  --color-gray-800: #2D2D2D;
  --color-gray-700: #404040;
  --color-gray-600: #525252;
  --color-gray-500: #737373;
  --color-gray-400: #A3A3A3;
  --color-gray-300: #D4D4D4;
  --color-gray-200: #E5E5E5;
  --color-gray-100: #F5F5F5;
  --color-white: #FAFAFA;

  /* Tipografía */
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Bebas Neue', 'Impact', sans-serif;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 2rem;
  --fs-4xl: 2.5rem;
  --fs-5xl: 3.5rem;
  --fs-6xl: 4.5rem;

  /* Espaciado */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --container-max: 1200px;
  --container-padding: 1rem;
  --header-height: 70px;

  /* Efectos */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.2);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* ---------- Section Commons ---------- */
.section {
  padding: var(--space-4xl) 0;
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
  max-width: 640px;
  margin-inline: auto;
}

.section__label {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.section__title {
  font-family: var(--font-heading);
  font-size: var(--fs-3xl);
  letter-spacing: 0.02em;
  color: var(--color-black);
  line-height: 1.1;
  margin-bottom: var(--space-md);
}

.section__subtitle {
  font-size: var(--fs-lg);
  color: var(--color-gray-500);
  line-height: 1.6;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  border: 2px solid transparent;
}

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

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

.btn--outline {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn--outline:hover {
  background-color: var(--color-white);
  color: var(--color-black);
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
}

/* ============================================
   HEADER
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background-color: rgba(15, 15, 15, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background-color var(--transition), box-shadow var(--transition);
}

.header--scrolled {
  background-color: rgba(15, 15, 15, 0.98);
  box-shadow: var(--shadow-lg);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  line-height: 1;
}

.header__logo-img {
  height: 62px;
  width: auto;
  max-height: calc(var(--header-height) - 8px);
}

.footer__logo-img {
  height: auto;
  width: 240px;
  object-fit: contain;
}

/* Nav Toggle (mobile) */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition);
}

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

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background-color: var(--color-gray-900);
  padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
  transition: right var(--transition);
  z-index: 1000;
}

.nav.active {
  right: 0;
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.nav__link {
  display: block;
  padding: var(--space-sm) 0;
  color: var(--color-gray-300);
  font-size: var(--fs-base);
  font-weight: 500;
  transition: color var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-primary);
}

.nav__link--cta {
  margin-top: var(--space-sm);
  padding: 0.6rem 1.25rem;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  text-align: center;
}

.nav__link--cta:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--color-black);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero__bg img,
.hero__bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(
    135deg,
    rgba(15, 15, 15, 0.9) 0%,
    rgba(15, 15, 15, 0.6) 50%,
    rgba(220, 38, 38, 0.15) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 3;
  padding-top: var(--header-height);
}

.hero__subtitle {
  font-size: var(--fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: var(--fs-4xl);
  color: var(--color-white);
  line-height: 1.05;
  letter-spacing: 0.03em;
  margin-bottom: var(--space-lg);
}

.hero__description {
  font-size: var(--fs-lg);
  color: var(--color-gray-400);
  max-width: 520px;
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* ============================================
   ABOUT - Sobre Nosotros
   ============================================ */
.about {
  background-color: var(--color-white);
}

.about__layout {
  display: grid;
  gap: var(--space-3xl);
}

.about__text .section__label {
  display: block;
}

.about__heading {
  font-family: var(--font-heading);
  font-size: var(--fs-3xl);
  letter-spacing: 0.02em;
  color: var(--color-black);
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.about__desc {
  font-size: var(--fs-sm);
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.btn--outline-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background-color: transparent;
  transition: all var(--transition);
  margin-top: var(--space-md);
}

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

.about__image {
  position: relative;
}

.about__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* Red accent border on the left of the image */
.about__image::before {
  content: '';
  position: absolute;
  top: var(--space-xl);
  bottom: var(--space-xl);
  left: -6px;
  width: 5px;
  background-color: var(--color-primary);
  border-radius: 3px;
}

/* ============================================
   SPECIALTY - Nuestra Especialidad
   ============================================ */
.specialty {
  background-color: var(--color-white);
}

/* Two-column layout: image on top (mobile), text left + image right (desktop) */
.specialty__layout {
  display: grid;
  gap: var(--space-3xl);
}

/* -- Text column -- */
.specialty__text {
  order: 2;
}

.specialty__heading {
  font-family: var(--font-heading);
  font-size: var(--fs-3xl);
  letter-spacing: 0.02em;
  color: var(--color-black);
  line-height: 1.1;
  margin-bottom: var(--space-sm);
}

.specialty__sub {
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-xl);
}

.specialty__desc {
  font-size: var(--fs-sm);
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.specialty__desc strong {
  color: var(--color-black);
}

/* Benefits list */
.specialty__benefits {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-gray-200);
}

.specialty__benefit {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.specialty__benefit-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(220, 38, 38, 0.06);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.specialty__benefit:hover .specialty__benefit-icon {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.specialty__benefit strong {
  display: block;
  font-size: var(--fs-base);
  color: var(--color-black);
  margin-bottom: 2px;
}

.specialty__benefit span {
  font-size: var(--fs-sm);
  color: var(--color-gray-500);
  line-height: 1.6;
}

/* -- Image column -- */
.specialty__image {
  order: 1;
}

.specialty__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* -- Brands bar -- */
.specialty__brands {
  margin-top: var(--space-3xl);
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-gray-200);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.specialty__brands-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-gray-400);
}

.specialty__brands-list {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.specialty__brand {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  letter-spacing: 0.12em;
  color: var(--color-gray-300);
  transition: color var(--transition);
}

.specialty__brand:hover {
  color: var(--color-gray-700);
}

.specialty__brand-sep {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--color-gray-300);
}

/* ============================================
   PRODUCT LINE - Línea de Productos
   ============================================ */
.product-line {
  background-color: var(--color-gray-100);
}

.product-line__grid {
  display: grid;
  gap: var(--space-xl);
}

.pline-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border-bottom: 3px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), border-color 0.4s ease;
}

.pline-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-bottom-color: var(--color-primary);
}

.pline-card__img {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--color-gray-200);
}

.pline-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.pline-card:hover .pline-card__img img {
  transform: scale(1.04);
}

.pline-card__body {
  padding: var(--space-xl) var(--space-xl) var(--space-2xl);
}

.pline-card__title {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  letter-spacing: 0.02em;
  color: var(--color-black);
  line-height: 1.1;
  margin-bottom: var(--space-sm);
}

.pline-card__desc {
  font-size: var(--fs-sm);
  color: var(--color-gray-500);
  line-height: 1.7;
}

/* ============================================
   QUALITY STANDARD - Estándar de Calidad HMMC
   ============================================ */
.quality-standard {
  background-color: #111827;
}

.quality-standard__grid {
  display: grid;
  gap: var(--space-lg);
}

.qs-card {
  background-color: #1f2937;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  transition: transform var(--transition), box-shadow var(--transition);
}

.qs-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.qs-card__img {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: #2a3444;
}

.qs-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(40%);
  transition: filter 0.5s ease, transform 0.5s ease;
}

.qs-card:hover .qs-card__img img {
  filter: grayscale(0%);
  transform: scale(1.04);
}

.qs-card__body {
  padding: var(--space-xl) var(--space-xl) var(--space-2xl);
}

.qs-card__title {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  letter-spacing: 0.02em;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.qs-card__body p {
  font-size: var(--fs-sm);
  color: var(--color-gray-400);
  line-height: 1.7;
}

/* ============================================
   DISTRIBUTORS - Red de Distribuidores
   ============================================ */
.distributors {
  background-color: #f8f9fa;
}

.distributors__grid {
  display: grid;
  gap: var(--space-2xl);
}

/* Responsive map container */
.map-responsive {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.map-responsive iframe {
  display: block;
  width: 100%;
  border-radius: 16px;
}

/* Info column */
.distributors__title {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  letter-spacing: 0.02em;
  color: var(--color-black);
  margin-bottom: var(--space-md);
}

.distributors__desc {
  font-size: var(--fs-sm);
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

.distributors__benefits {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.distributors__benefits li {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.distributors__benefits li svg {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

.distributors__benefits li strong {
  display: block;
  font-size: var(--fs-base);
  color: var(--color-black);
  margin-bottom: 2px;
}

.distributors__benefits li span {
  font-size: var(--fs-sm);
  color: var(--color-gray-500);
  line-height: 1.6;
}

.distributors__info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Intro text */
.distributors__intro {
  text-align: center;
  font-size: var(--fs-sm);
  color: var(--color-gray-500);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto var(--space-3xl);
}

/* Map accent border */
.map-responsive {
  border: 3px solid rgba(220, 38, 38, 0.15);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

/* Benefit icons */
.dist-benefit__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(220, 38, 38, 0.06);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.distributors__benefits li:hover .dist-benefit__icon {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ============================================
   CONTACT HERO - Full background image
   ============================================ */
.contact-hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-5xl) 0;
}

.contact-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.contact-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.contact-hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(
    180deg,
    rgba(17, 24, 39, 0.92) 0%,
    rgba(17, 24, 39, 0.85) 100%
  );
}

.contact-hero__content {
  position: relative;
  z-index: 3;
}

.contact-hero__subtitle {
  color: var(--color-gray-400);
}

.contact-hero__grid {
  display: grid;
  gap: var(--space-3xl);
}

/* Info column */
.contact-hero__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-hero__item {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.contact-hero__item svg {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

.contact-hero__item strong {
  display: block;
  font-size: var(--fs-base);
  color: var(--color-white);
  margin-bottom: 2px;
}

.contact-hero__item p {
  font-size: var(--fs-sm);
  color: var(--color-gray-400);
  line-height: 1.7;
}

.contact-hero__social {
  margin-top: var(--space-md);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.contact-hero__social > span {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-gray-500);
  margin-bottom: var(--space-md);
}

.contact-hero__social-links {
  display: flex;
  gap: var(--space-md);
}

.contact-hero__social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: var(--color-gray-400);
  transition: all var(--transition);
}

.contact-hero__social-links a:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Form */
.contact-hero__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.chf__row {
  display: grid;
  gap: var(--space-md);
}

.chf__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.chf__group label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-gray-300);
}

.chf__group input,
.chf__group textarea {
  padding: 0.75rem 1rem;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  color: var(--color-white);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.chf__group input::placeholder,
.chf__group textarea::placeholder {
  color: var(--color-gray-600);
}

.chf__group input:focus,
.chf__group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

.chf__group textarea {
  resize: vertical;
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: var(--fs-base);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background-color: #111827;
  color: var(--color-gray-400);
  padding: var(--space-3xl) 0;
}

.footer__grid {
  display: grid;
  gap: var(--space-2xl);
  align-items: center;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__brand .logo-text {
  line-height: 1;
}

.footer__tagline {
  font-size: var(--fs-sm);
  color: var(--color-gray-500);
  letter-spacing: 0.06em;
}

.footer__links h4 {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  color: var(--color-white);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

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

.footer__links a {
  font-size: var(--fs-sm);
  color: var(--color-gray-400);
  transition: color var(--transition);
}

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

.footer__links li {
  font-size: var(--fs-sm);
}

.footer__copy p {
  font-size: var(--fs-xs);
  color: var(--color-gray-600);
}

/* ============================================
   HISTORY / TIMELINE
   ============================================ */
.history {
  background-color: var(--color-white);
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
  position: relative;
  padding-left: 40px;
}

/* Vertical line (mobile) */
.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-gray-300));
}

.timeline__item {
  position: relative;
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.timeline__icon {
  position: absolute;
  left: -40px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-white);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  color: var(--color-primary);
  z-index: 1;
  transition: all var(--transition);
}

.timeline__icon svg {
  width: 16px;
  height: 16px;
}

.timeline__item:hover .timeline__icon {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: scale(1.15);
}

.timeline__content {
  background-color: var(--color-gray-100);
  padding: var(--space-lg) var(--space-xl);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
  transition: border-color var(--transition), box-shadow var(--transition);
  flex: 1;
}

.timeline__content:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.timeline__year {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.timeline__title {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  letter-spacing: 0.02em;
  color: var(--color-black);
  margin-bottom: var(--space-sm);
}

.timeline__content p {
  font-size: var(--fs-sm);
  color: var(--color-gray-500);
  line-height: 1.7;
}

/* ============================================
   COMPATIBILITY - Compatibilidad y Aplicaciones
   ============================================ */
.compatibility {
  background-color: var(--color-gray-100);
}

.compat__layout {
  display: grid;
  gap: var(--space-3xl);
}

.compat__title {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  letter-spacing: 0.02em;
  color: var(--color-black);
  margin-bottom: var(--space-md);
}

.compat__desc {
  font-size: var(--fs-sm);
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

.compat__models {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.compat__brand-name {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  letter-spacing: 0.04em;
  color: #111827;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.compat__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.compat__list li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--fs-sm);
  color: var(--color-gray-700);
}

.compat__list li svg {
  flex-shrink: 0;
  color: var(--color-primary);
}

/* Image column */
.compat__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: transform 0.5s ease;
}

.compat__image:hover img {
  transform: scale(1.03);
}

/* ============================================
   WHY HMMC
   ============================================ */
.why-hmc {
  background-color: var(--color-black);
  position: relative;
  overflow: hidden;
}

/* Subtle diagonal accent */
.why-hmc::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(220, 38, 38, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.section__label--light {
  color: var(--color-primary-light);
}

.section__title--light {
  color: var(--color-white);
}

.why-hmc__grid {
  display: grid;
  gap: var(--space-2xl);
  text-align: center;
}

.why-hmc__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-2xl) var(--space-xl);
}

.why-hmc__icon-wrap {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(220, 38, 38, 0.3);
  border-radius: 50%;
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
  animation: icon-pulse 3s ease-in-out infinite;
}

@keyframes icon-pulse {
  0%, 100% {
    border-color: rgba(220, 38, 38, 0.3);
    box-shadow: 0 0 0 0 rgba(220, 38, 38, 0);
  }
  50% {
    border-color: rgba(220, 38, 38, 0.6);
    box-shadow: 0 0 20px rgba(220, 38, 38, 0.15);
  }
}

.why-hmc__stat:nth-child(2) .why-hmc__icon-wrap {
  animation-delay: 0.5s;
}

.why-hmc__stat:nth-child(3) .why-hmc__icon-wrap {
  animation-delay: 1s;
}

.why-hmc__number {
  font-family: var(--font-heading);
  font-size: var(--fs-5xl);
  color: var(--color-white);
  line-height: 1;
  letter-spacing: 0.02em;
}

.why-hmc__unit {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.why-hmc__desc {
  font-size: var(--fs-sm);
  color: var(--color-gray-400);
  line-height: 1.7;
  max-width: 260px;
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE - Tablet (768px+)
   ============================================ */
@media (min-width: 768px) {
  :root {
    --container-padding: 2rem;
  }

  .section__title {
    font-size: var(--fs-4xl);
  }

  .hero__title {
    font-size: var(--fs-5xl);
  }

  .about__layout {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .about__heading {
    font-size: var(--fs-4xl);
  }

  .specialty__layout {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .specialty__text {
    order: 1;
  }

  .specialty__image {
    order: 2;
  }

  .specialty__heading {
    font-size: var(--fs-4xl);
  }

  .specialty__brands {
    flex-direction: row;
    justify-content: center;
    gap: var(--space-xl);
  }

  .product-line__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
  }

  .quality-standard__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .compat__layout {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .compat__title {
    font-size: var(--fs-3xl);
  }

  /* Timeline horizontal on tablet */
  .timeline {
    flex-direction: row;
    padding-left: 0;
    padding-top: 40px;
    gap: var(--space-lg);
  }

  .timeline::before {
    left: 0;
    right: 0;
    top: 15px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(to right, var(--color-primary), var(--color-gray-300));
  }

  .timeline__item {
    flex-direction: column;
    flex: 1;
  }

  .timeline__icon {
    position: absolute;
    left: 50%;
    top: -40px;
    transform: translateX(-50%);
  }

  .timeline__item:hover .timeline__icon {
    transform: translateX(-50%) scale(1.15);
  }

  .why-hmc__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
  }

  .why-hmc__number {
    font-size: var(--fs-5xl);
  }

  .distributors__grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
  }

  .distributors__title {
    font-size: var(--fs-3xl);
  }

  .contact-hero__grid {
    grid-template-columns: 0.8fr 1.2fr;
    align-items: start;
  }

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

  .contact-hero__form {
    padding: var(--space-2xl);
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr 1fr;
    text-align: left;
  }

  .footer__copy {
    text-align: right;
  }
}

/* ============================================
   RESPONSIVE - Desktop (1024px+)
   ============================================ */
@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .nav {
    position: static;
    width: auto;
    height: auto;
    background-color: transparent;
    padding: 0;
  }

  .nav__list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-xl);
  }

  .nav__link {
    font-size: var(--fs-sm);
    padding: var(--space-xs) 0;
    position: relative;
  }

  .nav__link:not(.nav__link--cta)::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition);
  }

  .nav__link:not(.nav__link--cta):hover::after,
  .nav__link:not(.nav__link--cta).active::after {
    width: 100%;
  }

  .nav__link--cta {
    margin-top: 0;
    padding: 0.5rem 1.25rem;
  }

  .hero__title {
    font-size: var(--fs-6xl);
  }

  .section__title {
    font-size: var(--fs-4xl);
  }

  .specialty__heading {
    font-size: var(--fs-5xl);
  }

  .specialty__brand {
    font-size: var(--fs-3xl);
  }

  .pline-card__title {
    font-size: var(--fs-3xl);
  }

  .quality-standard__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .why-hmc__number {
    font-size: var(--fs-6xl);
  }

}

/* ============================================
   RESPONSIVE - Large Desktop (1280px+)
   ============================================ */
@media (min-width: 1280px) {
  :root {
    --container-max: 1280px;
  }
}