/* =============================================
    T&M Mobile Truck Repair — Main Stylesheet
    Author: David Romero
    Version: 1.0
================================================ */

/* =============================================
    1. CUSTOM PROPERTIES (Design Tokens)
================================================ */
:root {
  /* Colors */
    --color-bg:           #0a0a0a;
    --color-bg-2:         #111111;
    --color-bg-3:         #1a1a1a;
    --color-surface:      #222222;
    --color-surface-2:    #2a2a2a;
    --color-border:       #333333;
    --color-border-light: #444444;

  /* Accent — Naranja ámbar (combina perfecto con trucks/mecánica) */
    --color-accent:       #f59e0b;
    --color-accent-hover: #d97706;
    --color-accent-light: rgba(245, 158, 11, 0.12);
    --color-accent-glow:  rgba(245, 158, 11, 0.25);

  /* Text */
    --color-text:         #f5f5f5;
    --color-text-muted:   #9ca3af;
    --color-text-faint:   #6b7280;

  /* Typography */
    --font-heading: 'Barlow Condensed', 'Arial Narrow', Arial, sans-serif;
    --font-body:    'Inter', system-ui, -apple-system, sans-serif;

  /* Font sizes — fluid scale */
    --fs-xs:   0.75rem;
    --fs-sm:   0.875rem;
    --fs-base: 1rem;
    --fs-md:   1.125rem;
    --fs-lg:   1.25rem;
    --fs-xl:   1.5rem;
    --fs-2xl:  2rem;
    --fs-3xl:  2.5rem;
    --fs-4xl:  3.5rem;
    --fs-5xl:  4.5rem;

  /* Spacing */
    --space-1:  0.25rem;
    --space-2:  0.5rem;
    --space-3:  0.75rem;
    --space-4:  1rem;
    --space-5:  1.25rem;
    --space-6:  1.5rem;
    --space-8:  2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

  /* Layout */
    --container-max: 1200px;
    --container-pad: var(--space-6);

  /* Borders */
    --radius-sm:   4px;
    --radius-md:   8px;
    --radius-lg:   12px;
    --radius-xl:   20px;
    --radius-full: 9999px;

  /* Shadows */
    --shadow-sm:  0 1px 3px rgba(0,0,0,0.5);
    --shadow-md:  0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg:  0 8px 32px rgba(0,0,0,0.6);
    --shadow-accent: 0 4px 24px rgba(245, 158, 11, 0.3);

  /* Transitions */
    --transition-fast:   150ms ease;
    --transition-base:   250ms ease;
    --transition-slow:   400ms ease;

  /* Header height */
    --header-h: 72px;
}

/* =============================================
    2. RESET & BASE
================================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: var(--fs-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

address {
    font-style: normal;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: 0.01em;
    color: var(--color-text);
}

/* =============================================
    3. SKIP LINK (Accesibilidad)
================================================ */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    background: var(--color-accent);
    color: #000;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    font-weight: 600;
    z-index: 9999;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
}

/* =============================================
    4. LAYOUT UTILITIES
================================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

/* =============================================
    5. BUTTONS
================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: var(--fs-md);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
    white-space: nowrap;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-2px);
}

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

/* Accent */
.btn--accent {
    background-color: var(--color-accent);
    color: #000;
    border: 2px solid var(--color-accent);
}

.btn--accent:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    box-shadow: var(--shadow-accent);
}

/* Outline */
.btn--outline {
    background-color: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border-light);
}

.btn--outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Ghost */
.btn--ghost {
    background-color: rgba(255,255,255,0.08);
    color: var(--color-text);
    border: 2px solid rgba(255,255,255,0.15);
}

.btn--ghost:hover {
    background-color: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.3);
}

/* Sizes */
.btn--lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--fs-lg);
}

.btn--sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--fs-sm);
}

/* Focus visible */
.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

/* =============================================
    6. SECTION HEADERS (reusable)
================================================ */
.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-header__eyebrow {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: var(--fs-sm);
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-3);
}

.section-header__title {
    font-size: clamp(var(--fs-2xl), 5vw, var(--fs-4xl));
    color: var(--color-text);
    margin-bottom: var(--space-4);
}

.section-header__desc {
    font-size: var(--fs-md);
    color: var(--color-text-muted);
    max-width: 600px;
    margin-inline: auto;
}

/* =============================================
    7. HEADER & NAVIGATION
================================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-h);
    background-color: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-base),
                box-shadow var(--transition-base);
}

.site-header.scrolled {
    background-color: rgba(10, 10, 10, 0.97);
    box-shadow: var(--shadow-lg);
}

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

/* Brand / Logo */
.header__brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    flex-shrink: 0;
}

.brand__icon {
    font-size: 1.6rem;
    line-height: 1;
}

.brand__text {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.brand__text strong {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--color-text);
    text-transform: uppercase;
}

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

.brand__sub {
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-top: 2px;
}

/* Nav */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav__link {
  display: inline-block;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--fs-base);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast),
              background-color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--space-3);
  right: var(--space-3);
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
  border-radius: var(--radius-full);
}

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

.nav__link:hover::after,
.nav__link--active::after {
  transform: scaleX(1);
}

.nav__link--active {
  color: var(--color-accent);
}

.nav__cta {
  flex-shrink: 0;
}

/* Hamburger button */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-fast);
  z-index: 1100;
}

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

.hamburger__bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base),
              opacity var(--transition-fast),
              background-color var(--transition-fast);
}

/* Hamburger animado cuando está abierto */
.nav__toggle[aria-expanded="true"] .hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__toggle[aria-expanded="true"] .hamburger__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__toggle[aria-expanded="true"] .hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Focus visible en nav links */
.nav__link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* =============================================
   8. HERO SECTION
================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
  background-color: var(--color-bg);

  /* Background pattern — grid sutil */
  background-image:
    linear-gradient(rgba(245,158,11,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,158,11,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 80% 60% at 50% 50%,
    rgba(245,158,11,0.06) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-block: var(--space-20);
  max-width: 780px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-5);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent-light);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: var(--radius-full);
}

.hero__title {
  font-size: clamp(var(--fs-3xl), 8vw, var(--fs-5xl));
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: var(--space-6);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.hero__title--accent {
  color: var(--color-accent);
  display: block;
}

.hero__description {
  font-size: clamp(var(--fs-base), 2vw, var(--fs-lg));
  color: var(--color-text-muted);
  max-width: 580px;
  margin-bottom: var(--space-10);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* Scroll indicator */
.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.scroll-dot {
  display: block;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50%       { transform: translateY(10px); opacity: 0.4; }
}

/* =============================================
   9. TRUST BAR
================================================ */
.trust-bar {
  background-color: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-6);
}

.trust-bar__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6) var(--space-8);
}

.trust-bar__item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.trust-bar__icon {
  font-size: 1.8rem;
  flex-shrink: 0;
  line-height: 1;
}

.trust-bar__title {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--fs-md);
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--color-text);
}

.trust-bar__desc {
  display: block;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* =============================================
   10. SERVICES PREVIEW
================================================ */
.services-preview {
  padding-block: var(--space-24);
  background-color: var(--color-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.service-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.service-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(245,158,11,0.12);
}

.service-card__icon {
  font-size: 2.2rem;
  margin-bottom: var(--space-4);
  line-height: 1;
}

.service-card__title {
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.service-card__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Card CTA especial */
.service-card--cta {
  background: linear-gradient(135deg, var(--color-surface), var(--color-surface-2));
  border-color: rgba(245,158,11,0.25);
  display: flex;
  flex-direction: column;
}

.service-card--cta .btn {
  margin-top: auto;
  padding-top: var(--space-8);
  align-self: flex-start;
}

/* =============================================
   11. ABOUT PREVIEW
================================================ */
.about-preview {
  padding-block: var(--space-24);
  background-color: var(--color-bg-3);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.about-preview__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-preview__content .section-header__eyebrow {
  text-align: left;
  display: block;
  margin-bottom: var(--space-3);
}

.about-preview__content .section-header__title {
  text-align: left;
  margin-bottom: var(--space-6);
  font-size: clamp(var(--fs-2xl), 4vw, var(--fs-3xl));
}

.about-preview__content p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.75;
}

.about-preview__content .btn {
  margin-top: var(--space-4);
}

/* Visual placeholder */
.about-preview__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-preview__img-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg-2) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  position: relative;
  overflow: hidden;
}

.about-preview__img-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(245,158,11,0.05) 0%,
    transparent 60%
  );
}

.about-preview__img-placeholder span {
  font-family: var(--font-heading);
  font-size: var(--fs-5xl);
  font-weight: 800;
  color: var(--color-accent);
  opacity: 0.4;
  letter-spacing: 0.1em;
  position: relative;
  z-index: 1;
}

.about-preview__img-placeholder p {
  font-family: var(--font-heading);
  font-size: var(--fs-md);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  position: relative;
  z-index: 1;
}

/* =============================================
   12. CTA BANNER
================================================ */
.cta-banner {
  padding-block: var(--space-20);
  background-color: var(--color-bg-2);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 70% 80% at 50% 50%,
    rgba(245,158,11,0.07) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.cta-banner__inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.cta-banner__title {
  font-size: clamp(var(--fs-2xl), 5vw, var(--fs-4xl));
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  letter-spacing: 0.03em;
}

.cta-banner__desc {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  max-width: 540px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

.cta-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
}

/* =============================================
   13. FOOTER
================================================ */
.site-footer {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
  padding-block: var(--space-16);
  align-items: start;
}

.footer__brand .header__brand {
  margin-bottom: var(--space-4);
  display: inline-flex;
}

.footer__tagline {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  max-width: 260px;
  line-height: 1.6;
}

.footer__nav-title {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.footer__nav-list li + li {
  margin-top: var(--space-3);
}

.footer__link {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent);
}

.footer__link--accent {
  color: var(--color-accent);
  font-weight: 600;
  font-size: var(--fs-base);
}

.footer__address p {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-3);
}

/* Footer bottom */
.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-5);
}

.footer__bottom p {
  font-size: var(--fs-xs);
  color: var(--color-text-faint);
  text-align: center;
}

/* =============================================
   14. PAGE HERO (interior pages)
================================================ */
.page-hero {
  padding-top: calc(var(--header-h) + var(--space-16));
  padding-bottom: var(--space-16);
  background-color: var(--color-bg-3);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 60% 80% at 20% 50%,
    rgba(245,158,11,0.05) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.page-hero__content {
  position: relative;
  z-index: 1;
}

.page-hero__eyebrow {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.page-hero__title {
  font-size: clamp(var(--fs-2xl), 6vw, var(--fs-4xl));
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
}

.page-hero__desc {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  max-width: 560px;
  line-height: 1.7;
}

/* =============================================
   15. SERVICES PAGE
================================================ */
.services-full {
  padding-block: var(--space-20);
  background-color: var(--color-bg);
}

.services-full__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

/* Service detail card */
.service-detail-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.service-detail-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(245,158,11,0.1);
}

.service-detail-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-5);
  line-height: 1;
}

.service-detail-card__title {
  font-size: var(--fs-xl);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.service-detail-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.service-detail-card__list li {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-5);
  position: relative;
  line-height: 1.5;
}

.service-detail-card__list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
  font-size: var(--fs-xs);
  top: 1px;
}

/* =============================================
   16. ABOUT PAGE
================================================ */
.about-story {
  padding-block: var(--space-24);
  background-color: var(--color-bg);
}

.about-story__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  margin-bottom: var(--space-20);
}

.about-story__content h2 {
  font-size: clamp(var(--fs-2xl), 4vw, var(--fs-3xl));
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.about-story__content p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  line-height: 1.8;
}

/* Values grid */
.about-values {
  padding-block: var(--space-20);
  background-color: var(--color-bg-3);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.value-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.value-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

.value-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-4);
}

.value-card__title {
  font-size: var(--fs-lg);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
  color: var(--color-accent);
}

.value-card__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* =============================================
   17. CONTACT PAGE
================================================ */
.contact-section {
  padding-block: var(--space-20);
  background-color: var(--color-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-12);
  align-items: start;
}

/* Info lateral */
.contact-info__title {
  font-size: var(--fs-2xl);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: var(--space-6);
}

.contact-info__items {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.contact-info__item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-info__item-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
  line-height: 1;
}

.contact-info__item-label {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.contact-info__item-value {
  font-size: var(--fs-base);
  color: var(--color-text);
  line-height: 1.6;
}

.contact-info__item-value a {
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.contact-info__item-value a:hover {
  color: var(--color-accent);
}

/* Formulario */
.contact-form {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
}

.contact-form__title {
  font-size: var(--fs-xl);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-8);
  color: var(--color-text);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background-color: var(--color-bg-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  padding: var(--space-3) var(--space-4);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-faint);
}

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

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239ca3af' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
  cursor: pointer;
}

.form-group select option {
  background-color: var(--color-surface);
  color: var(--color-text);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form__submit {
  width: 100%;
  margin-top: var(--space-2);
}

/* Form status messages */
.form-status {
  margin-top: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: 600;
  display: none;
}

.form-status--success {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #4ade80;
  display: block;
}

.form-status--error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
  display: block;
}

/* Map */
.contact-map {
  margin-top: var(--space-16);
}

.contact-map__title {
  font-size: var(--fs-xl);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-6);
  text-align: center;
}

.map-wrapper {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  height: 420px;
  background-color: var(--color-surface);
}

.map-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: invert(90%) hue-rotate(180deg);
}

/* =============================================
   18. UTILITY CLASSES
================================================ */
.text-accent  { color: var(--color-accent); }
.text-muted   { color: var(--color-text-muted); }
.text-center  { text-align: center; }
.mt-auto      { margin-top: auto; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* =============================================
   19. RESPONSIVE — TABLET (max 1024px)
================================================ */
@media (max-width: 1024px) {
  .services-grid,
  .services-full__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-preview__grid,
  .about-story__grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .about-preview__visual {
    order: -1;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
  }

  .footer__brand {
    grid-column: 1 / -1;
  }

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

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

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

/* =============================================
    20. RESPONSIVE — MOBILE (max 768px)
================================================ */

@media (max-width: 768px) {
    :root {
    --container-pad: var(--space-4);
    --header-h: 64px;
    }

  /* Nav mobile */
    .nav__toggle {
    display: flex;
    }

    .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #0a0a0a;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: var(--space-10);
    gap: var(--space-6);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    border-top: 1px solid var(--color-border);
    z-index: 1050;
    }

    .main-nav.nav--open {
    transform: translateX(0);
    }

    .nav__list {
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    }

    .nav__link {
    font-size: var(--fs-xl);
    padding: var(--space-2) var(--space-4);
    }

    .nav__cta {
    margin-top: var(--space-4);
    }

  /* Hero */
    .hero__content {
    padding-block: var(--space-16) var(--space-12);
    }

    .hero__actions {
    flex-direction: column;
    align-items: flex-start;
    }

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

  /* Trust bar */
    .trust-bar__list {
    grid-template-columns: 1fr;
    gap: var(--space-5);
    }

  /* Services */
    .services-grid,
    .services-full__grid {
    grid-template-columns: 1fr;
    }

  /* Values */
    .values-grid {
    grid-template-columns: 1fr;
    }

  /* Footer */
    .footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    }

    .footer__brand {
    grid-column: auto;
    }

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

    .contact-form {
    padding: var(--space-6);
    }

  /* CTA Banner */
    .cta-banner__actions {
    flex-direction: column;
    align-items: center;
    }

    .cta-banner__actions .btn {
    width: 100%;
    max-width: 360px;
    }

  /* Map */
    .map-wrapper {
    height: 300px;
    }
}

/* =============================================
    21. RESPONSIVE — SMALL MOBILE (max 480px)
================================================ */
@media (max-width: 480px) {
    .hero__title {
    font-size: var(--fs-3xl);
    }

    .brand__sub {
    display: none;
    }
}

/* =============================================
    22. PRINT STYLES
================================================ */
@media print {
    .site-header,
    .nav__toggle,
    .hero__scroll-indicator,
    .cta-banner,
    .contact-form {
    display: none !important;
    }

    body {
    background: white;
    color: black;
    }
}

/* =============================================
   SERVICES PAGE — Extra styles
================================================ */

/* Intro strip */
.services-intro {
  background-color: var(--color-bg-2);
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-5);
  overflow-x: auto;
}

.services-intro__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  align-items: center;
  justify-content: center;
}

.services-intro__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.services-intro__dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* Filter buttons */
.services-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-bottom: var(--space-10);
}

.filter-btn {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.filter-btn--active {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #000;
}

.filter-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Card hide/show via filter */
.service-detail-card[hidden] {
  display: none;
}

/* Process steps */
.process-section {
  padding-block: var(--space-24);
  background-color: var(--color-bg-3);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  counter-reset: steps;
  list-style: none;
  margin-top: var(--space-4);
}

.process-step {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  position: relative;
  transition:
    border-color var(--transition-base),
    transform var(--transition-base);
}

.process-step:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}

.process-step__number {
  font-family: var(--font-heading);
  font-size: var(--fs-4xl);
  font-weight: 800;
  color: var(--color-accent);
  opacity: 0.25;
  line-height: 1;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.process-step__title {
  font-size: var(--fs-lg);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.process-step__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Responsive process steps */
@media (max-width: 1024px) {
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .process-steps {
    grid-template-columns: 1fr;
  }
}

/* =============================================
   FORM VALIDATION STYLES (usado por main.js)
================================================ */
.input-error {
  border-color: #ef4444 !important;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2) !important;
}

.field-error {
  display: block;
  font-size: var(--fs-xs);
  color: #f87171;
  margin-top: var(--space-1);
  font-weight: 500;
}

/* =============================================
    ANIMATION — fadeInUp (usado por el filter)
================================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =============================================
   ABOUT PAGE — Extra styles
================================================ */
.about-info-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-16);
}

.about-info-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.about-info-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

.about-info-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-3);
  line-height: 1;
}

.about-info-card__title {
  font-size: var(--fs-base);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
  color: var(--color-accent);
}

.about-info-card__desc {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Service Area */
.service-area {
  padding-block: var(--space-24);
  background-color: var(--color-bg);
}

.service-area__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.service-area__content h2 {
  font-size: clamp(var(--fs-2xl), 4vw, var(--fs-3xl));
  text-transform: uppercase;
  margin-bottom: var(--space-6);
  margin-top: var(--space-3);
}

.service-area__content p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.8;
}

.service-area__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2) var(--space-4);
  margin-block: var(--space-5);
}

.service-area__list li {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-4);
  position: relative;
}

.service-area__list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
  font-size: var(--fs-xs);
}

.service-area__note {
  font-size: var(--fs-sm);
  color: var(--color-text-faint);
  margin-top: var(--space-5) !important;
}

.service-area__contact-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
}

.service-area__contact-title {
  font-size: var(--fs-xl);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.service-area__contact-card > p {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  margin-bottom: var(--space-6);
}

.service-area__contact-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.contact-pill {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background-color: var(--color-accent);
  color: #000;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: var(--fs-base);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.contact-pill:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
}

.contact-pill--outline {
  background-color: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border-light);
}

.contact-pill--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: transparent;
}

.service-area__address {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-6);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* =============================================
   CONTACT PAGE — Extra styles
================================================ */
.contact-call-btn {
  width: 100%;
  justify-content: center;
  margin-top: var(--space-4);
}

.form__note {
  margin-top: var(--space-4);
  font-size: var(--fs-xs);
  color: var(--color-text-faint);
  line-height: 1.6;
  text-align: center;
}

.form__note a {
  color: var(--color-accent);
}

.map-address {
  text-align: center;
  margin-top: var(--space-5);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

/* Responsive about/contact */
@media (max-width: 1024px) {
  .about-info-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-area__grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

@media (max-width: 768px) {
  .about-info-cards {
    grid-template-columns: 1fr 1fr;
  }

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

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

@media (max-width: 480px) {
  .about-info-cards {
    grid-template-columns: 1fr;
  }
}