/* ==========================================================
   BARAX Water Systems — Components
   Version: 1.0
   Depends on: tokens.css
   Convention: BEM (.block__element--modifier)
   ========================================================== */


/* =========================================================
   1. Site Header
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--color-bg-dark);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-border-dark);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.site-header__logo {
  height: 40px;
  width: auto;
}

.site-header__nav {
  display: none;
  gap: var(--space-5);
}

.site-header__nav-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-on-dark);
  transition: color 0.2s ease;
}

.site-header__nav-link:hover {
  color: var(--color-accent);
}

.site-header__nav-link:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
  border-radius: var(--radius-sm);
}

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

.site-header__menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text-on-dark);
}

.site-header__menu-toggle:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
  border-radius: var(--radius-sm);
}


/* =========================================================
   2. Buttons
   ========================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: 1;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  min-height: 44px;
  min-width: 44px;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-text-on-dark);
}

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

.btn--primary:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.btn--primary:active {
  background-color: var(--color-accent-active);
}

.btn--primary:disabled,
.btn--primary.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

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

.btn--secondary:hover {
  background-color: var(--color-accent);
  color: var(--color-text-on-dark);
}

.btn--secondary:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.btn--secondary:active {
  background-color: var(--color-accent-active);
  border-color: var(--color-accent-active);
  color: var(--color-text-on-dark);
}

.btn--secondary:disabled,
.btn--secondary.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--on-dark {
  background-color: var(--color-accent);
  color: var(--color-text-on-dark);
}

.btn--on-dark:hover {
  background-color: var(--color-accent-hover);
}

.btn--on-dark:focus-visible {
  outline: 2px solid var(--color-bg);
  outline-offset: var(--focus-offset);
}

.btn--on-dark:active {
  background-color: var(--color-accent-active);
}


/* =========================================================
   3. Hero
   ========================================================= */

.hero {
  position: relative;
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding-block: var(--space-10) var(--space-11);
  overflow: hidden;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.hero__eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.hero__title {
  font-size: var(--text-4xl);
  line-height: var(--line-tight);
  max-width: 18ch;
}

.hero__subtitle {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--weight-regular);
  line-height: var(--line-relaxed);
  color: var(--color-text-muted);
  max-width: 45ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-3);
}


/* =========================================================
   4. Stats
   ========================================================= */

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
  text-align: center;
}

.stats__item {
  padding: var(--space-5);
}

.stats__number {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  color: var(--color-accent);
  line-height: 1;
}

.stats__label {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-top: var(--space-2);
}


/* =========================================================
   5. Service Cards (Residencial / Comercial / Industrial)
   ========================================================= */

.services {
  display: grid;
  gap: var(--space-6);
}

.service-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.service-card:hover {
  box-shadow: var(--shadow-lg);
}

.service-card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.service-card__body {
  padding: var(--space-5);
}

.service-card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.service-card__description {
  font-size: var(--text-base);
  color: var(--color-text-light);
  line-height: var(--line-relaxed);
}


/* =========================================================
   6. Methodology
   ========================================================= */

.methodology {
  display: grid;
  gap: var(--space-6);
  counter-reset: step;
}

.methodology__step {
  display: flex;
  gap: var(--space-4);
  counter-increment: step;
}

.methodology__number {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background-color: var(--color-accent);
  color: var(--color-text-on-dark);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
}

.methodology__content {
  flex: 1;
}

.methodology__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-1);
}

.methodology__description {
  font-size: var(--text-base);
  color: var(--color-text-light);
  line-height: var(--line-relaxed);
}


/* =========================================================
   7. Advantages
   ========================================================= */

.advantages {
  display: grid;
  gap: var(--space-6);
}

.advantage {
  text-align: center;
  padding: var(--space-6);
}

.advantage__icon {
  width: 48px;
  height: 48px;
  margin-inline: auto;
  margin-bottom: var(--space-4);
  color: var(--color-accent);
}

.advantage__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.advantage__description {
  font-size: var(--text-base);
  color: var(--color-text-light);
  line-height: var(--line-relaxed);
  max-width: 40ch;
  margin-inline: auto;
}


/* =========================================================
   8. CTA Banner
   ========================================================= */

.cta-banner {
  text-align: center;
  padding-block: var(--space-10);
  background-color: var(--color-accent);
  color: var(--color-text-on-dark);
}

.cta-banner__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-3);
}

.cta-banner__subtitle {
  font-size: var(--text-lg);
  opacity: 0.9;
  margin-bottom: var(--space-6);
}

.cta-banner .btn {
  background-color: var(--color-bg);
  color: var(--color-accent);
}

.cta-banner .btn:hover {
  background-color: var(--color-bg-hover);
}

.cta-banner .btn:focus-visible {
  outline: 2px solid var(--color-bg);
  outline-offset: var(--focus-offset);
}


/* =========================================================
   9. Site Footer
   ========================================================= */

.site-footer {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding-block: var(--space-8);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.site-footer__logo {
  height: 36px;
  width: auto;
}

.site-footer__contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer__contact-item {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.site-footer__contact-link {
  color: var(--color-text-muted);
  transition: color 0.2s ease;
}

.site-footer__contact-link:hover {
  color: var(--color-accent);
}

.site-footer__contact-link:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
  border-radius: var(--radius-sm);
}

.site-footer__social {
  display: flex;
  gap: var(--space-4);
}

.site-footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text-muted);
  transition: color 0.2s ease;
}

.site-footer__social-link:hover {
  color: var(--color-accent);
}

.site-footer__social-link:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
  border-radius: var(--radius-sm);
}

.site-footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}


/* =========================================================
   10. Section Headers
   ========================================================= */

.section-header {
  margin-bottom: var(--space-8);
}

.section-header--center {
  text-align: center;
}

.section-header__eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.section-header__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-3);
}

.section-header__description {
  font-size: var(--text-lg);
  color: var(--color-text-light);
  line-height: var(--line-relaxed);
  max-width: 60ch;
}

.section-header--center .section-header__description {
  margin-inline: auto;
}


/* =========================================================
   Responsive — Tablet (640px+)
   ========================================================= */

@media (min-width: 640px) {

  .site-header__nav {
    display: flex;
  }

  .site-header__menu-toggle {
    display: none;
  }

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

  .stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

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

  .site-footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }

  .section-header__title {
    font-size: var(--text-4xl);
  }
}


/* =========================================================
   Responsive — Desktop (1024px+)
   ========================================================= */

@media (min-width: 1024px) {

  .hero {
    padding-block: var(--space-12);
  }

  .hero__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .hero__content {
    flex: 1;
    max-width: 50%;
  }

  .hero__media {
    flex: 1;
    max-width: 45%;
  }

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

  .methodology {
    grid-template-columns: repeat(4, 1fr);
  }

  .service-card__image {
    height: 240px;
  }
}


/* =========================================================
   Reduced motion
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}