/* =============================================================================
   AVI-MAKS — Landing styles (mobile-first)
   ============================================================================= */

/* ---------- 1. Variables ---------- */
:root {
  --color-primary:       #0EA5E9;
  --color-primary-dark:  #0369A1;
  --color-accent:        #06B6D4;
  --color-bg:            #F8FAFC;
  --color-bg-alt:        #FFFFFF;
  --color-bg-soft:       #F1F5F9;
  --color-text:          #0F172A;
  --color-text-muted:    #475569;
  --color-border:        #E2E8F0;
  --color-whatsapp:      #25D366;
  --color-whatsapp-dark: #128C7E;

  --shadow-sm:  0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md:  0 4px 24px rgba(15, 23, 42, 0.06);
  --shadow-lg:  0 12px 40px rgba(2, 132, 199, 0.18);

  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-full: 999px;

  --gradient-hero: linear-gradient(135deg, #0EA5E9 0%, #06B6D4 50%, #0891B2 100%);
  --gradient-soft: linear-gradient(135deg, #E0F2FE 0%, #BAE6FD 100%);

  --container-w:      1200px;
  --container-narrow: 800px;
  --header-h:         68px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: var(--header-h); }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: 0; padding: 0; color: inherit; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p { margin: 0; }
input, textarea, select { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1rem;
  border-radius: 0 0 var(--radius-md) 0;
  font-weight: 600;
  font-size: 0.9375rem;
}
.skip-link:focus { left: 0; }

/* ---------- 3. Tabler icons base ---------- */
.ti {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  vertical-align: -0.125em;
}

/* ---------- 4. Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 1rem;
}
.container--narrow { max-width: var(--container-narrow); }

.section {
  padding: clamp(3rem, 8vw, 6rem) 0;
}
.section--alt { background: var(--color-bg-alt); }

.section__head {
  text-align: center;
  margin: 0 auto clamp(2rem, 5vw, 3rem);
  max-width: 720px;
}
.section__eyebrow {
  color: var(--color-primary-dark);
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.section__eyebrow--light {
  color: #BEF264;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}
.section__title {
  font-size: clamp(1.625rem, 4vw, 2.5rem);
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.section__lead {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

/* ---------- 5. Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.header__inner {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  height: var(--header-h);
}
.header__inner > .logo { margin-right: auto; }
.header__inner .lang-switcher { order: 3; }
.header__inner .nav { order: 2; }
.header__inner .header__phone { order: 4; }
.header__inner .burger { order: 5; }
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
}
.logo__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient-hero);
  color: #fff;
  font-size: 1.125rem;
}
.logo--light { color: #fff; }

.nav {
  display: none;
  gap: 1.75rem;
}
.nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 0.5rem 0;
  transition: color 0.2s;
}
.nav__link:hover { color: var(--color-primary); }

.header__phone {
  display: none;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background: var(--color-bg-soft);
  transition: background 0.2s;
}
.header__phone i { font-size: 1.125rem; color: var(--color-primary); }
.header__phone:hover { background: var(--gradient-soft); }

/* Language switcher (pill toggle) */
.lang-switcher {
  display: inline-flex;
  background: var(--color-bg-soft);
  border-radius: var(--radius-full);
  padding: 3px;
  gap: 2px;
}
.lang-switcher__btn {
  padding: 0.375rem 0.625rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  min-height: 30px;
  min-width: 34px;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}
.lang-switcher__btn.is-active {
  background: #fff;
  color: var(--color-primary-dark);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
.lang-switcher__btn:not(.is-active):hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.5);
}

.burger {
  width: 44px;
  height: 44px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius-sm);
}
.burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav (when .is-open) */
.nav.is-open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: #fff;
  padding: 0.5rem 1rem 1rem;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  gap: 0;
}
.nav.is-open .nav__link {
  padding: 0.875rem 0.5rem;
  border-bottom: 1px solid var(--color-border);
}
.nav.is-open .nav__link:last-child { border-bottom: 0; }

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1;
  min-height: 48px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s, background 0.2s;
  white-space: nowrap;
}
.btn i { font-size: 1.25em; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--lg    { padding: 1.0625rem 1.75rem; font-size: 1.0625rem; min-height: 56px; }
.btn--block { width: 100%; }

.btn--primary {
  background: var(--gradient-hero);
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.btn--primary:hover { box-shadow: 0 16px 48px rgba(2, 132, 199, 0.28); }

.btn--whatsapp {
  background: var(--color-whatsapp);
  color: #fff;
}
.btn--whatsapp:hover { background: var(--color-whatsapp-dark); }

/* ---------- 7. Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 12vw, 7rem) 0 clamp(3rem, 10vw, 6rem);
  color: #fff;
  isolation: isolate;
  text-align: center;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-color: var(--color-primary);
  background-image: url("images/hero-bg.jpg"), var(--gradient-hero);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(2, 28, 48, 0.45) 0%, rgba(2, 28, 48, 0.72) 100%);
}
.hero__title {
  font-size: clamp(1.875rem, 5.5vw, 3.5rem);
  line-height: 1.1;
  font-weight: 800;
  margin-bottom: 1rem;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.5), 0 1px 3px rgba(0, 0, 0, 0.35);
}
.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  max-width: 640px;
  margin: 0 auto 2rem;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.4);
}
.hero__cta {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 320px;
  margin: 0 auto;
}
.hero__badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.5rem;
  margin-top: 2rem;
  font-size: 0.9375rem;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.45);
}
.hero__badges li {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}
.hero__badges li i {
  color: #BEF264;
  font-size: 1.125rem;
}

/* ---------- 8. Services ---------- */
.services {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.service-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
  display: flex;
  flex-direction: column;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.service-card__img {
  aspect-ratio: 3 / 2;
  width: 100%;
  background-color: #BAE6FD;
  background-image: var(--gradient-soft);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.service-card__img--install     { background-image: url("images/service-install.jpg"),     var(--gradient-soft); }
.service-card__img--freon       { background-image: url("images/service-freon.jpg"),       var(--gradient-soft); }
.service-card__img--repair      { background-image: url("images/service-repair.jpg"),      var(--gradient-soft); }
.service-card__img--ventilation { background-image: url("images/service-ventilation.jpg"), var(--gradient-soft); }
.service-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  padding: 1.25rem 1.25rem 0.5rem;
}
.service-card__text {
  color: var(--color-text-muted);
  padding: 0 1.25rem 1rem;
  flex: 1;
}
.service-card__link {
  color: var(--color-primary);
  font-weight: 600;
  padding: 0 1.25rem 1.25rem;
}
.service-card__link:hover { color: var(--color-primary-dark); }

/* ---------- 9. Advantages ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}
.stats__item {
  background: var(--gradient-soft);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
}
.stats__num {
  display: block;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1.1;
}
.stats__label {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-top: 0.375rem;
}

.features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.features__item {
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.features__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  font-size: 1.5rem;
  margin-bottom: 0.875rem;
}
.features__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
}
.features__text {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* ---------- 10. Process ---------- */
.process {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.process__step {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border-left: 4px solid var(--color-primary);
}
.process__num {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}
.process__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
}
.process__text {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* ---------- 11. Brands ---------- */
.brands {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}
.brands__item {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  transition: background 0.2s, color 0.2s, transform 0.2s;
}
.brands__item:hover {
  background: var(--gradient-soft);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* ---------- 12. Calculator ---------- */
.calc {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 4vw, 2rem);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}
.calc__field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.calc__field label {
  font-weight: 600;
  font-size: 0.9375rem;
}
.calc__field input[type="number"] {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  font-size: 1.0625rem;
  font-weight: 600;
  min-height: 52px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.calc__field input[type="number"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.15);
}
.calc__field input[type="number"]::-webkit-outer-spin-button,
.calc__field input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.calc__group {
  border: 0;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.calc__group legend {
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
  padding: 0;
}
.calc__check {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  min-height: 56px;
}
.calc__check:hover { border-color: var(--color-primary); }
.calc__check input { position: absolute; opacity: 0; pointer-events: none; }
.calc__check-box {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 1.5px solid var(--color-border);
  background: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  font-size: 1rem;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  margin-top: 0.0625rem;
}
.calc__check input:checked + .calc__check-box {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.calc__check input:checked ~ .calc__check-text { color: var(--color-text); }
.calc__check input:focus-visible + .calc__check-box {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.calc__check:has(input:checked) {
  border-color: var(--color-primary);
  background: rgba(14, 165, 233, 0.05);
}
.calc__check-text {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  font-size: 0.9375rem;
}
.calc__check-text strong { font-weight: 600; color: var(--color-text); }
.calc__check-text small { color: var(--color-text-muted); font-size: 0.8125rem; }

.calc__result {
  background: var(--gradient-soft);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  animation: calc-fade-in 0.35s ease;
}
@keyframes calc-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.calc__result-label {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary-dark);
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.calc__result-num {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.1;
  margin-bottom: 0.25rem;
}
.calc__result-num small {
  font-size: 0.5em;
  font-weight: 600;
  color: var(--color-text-muted);
}
.calc__result-class {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
}
.calc__result-note {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: 1.25rem;
}

/* ---------- 13. FAQ ---------- */
.faq {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.faq__item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.faq__item.is-open {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.faq__q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  text-align: left;
  padding: 1.125rem 1.25rem;
  font-weight: 600;
  font-size: 1rem;
  min-height: 56px;
}
.faq__icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-bg-soft);
  color: var(--color-primary);
  font-size: 1rem;
  transition: transform 0.2s, background 0.2s, color 0.2s;
}
.faq__item.is-open .faq__icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: #fff;
}
.faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq__item.is-open .faq__a { max-height: 600px; }
.faq__a p {
  padding: 0 1.25rem 1.25rem;
  color: var(--color-text-muted);
}

/* ---------- 14. CTA ---------- */
.cta {
  background: var(--gradient-hero);
  color: #fff;
  padding: clamp(3rem, 8vw, 5rem) 0;
}
.cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}
.cta__title {
  font-size: clamp(1.625rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}
.cta__lead {
  font-size: 1.0625rem;
  margin-bottom: 1.5rem;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
}
.cta__phone {
  display: block;
  text-align: center;
  background: #fff;
  color: var(--color-primary-dark);
  border-radius: var(--radius-md);
  padding: 1rem;
  transition: transform 0.15s, box-shadow 0.2s;
  margin-bottom: 1rem;
}
.cta__phone:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}
.cta__phone-label {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.cta__phone-num {
  display: block;
  font-size: clamp(1.25rem, 3.5vw, 1.625rem);
  font-weight: 800;
  margin-top: 0.125rem;
}
.cta__info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9375rem;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}
.cta__info li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.cta__info li i { font-size: 1.125rem; color: rgba(255, 255, 255, 0.95); }

/* ---------- 15. Form (WhatsApp) ---------- */
.form-wa {
  background: rgba(2, 28, 48, 0.32);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 4vw, 1.75rem);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}
.form-wa__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
}
.form-wa__lead {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 0.5rem;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}
.form-wa__field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}
.form-wa__field label {
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.375rem;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
.form-wa__hint-label {
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.7;
}
.form-wa__field input,
.form-wa__field textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-text);
  font-size: 1rem;
  min-height: 48px;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.form-wa__field input::placeholder,
.form-wa__field textarea::placeholder {
  color: var(--color-text-muted);
}
.form-wa__field input:focus,
.form-wa__field textarea:focus {
  outline: none;
  background: #fff;
  border-color: #BEF264;
  box-shadow: 0 0 0 4px rgba(190, 242, 100, 0.25);
}
.form-wa__field textarea {
  resize: vertical;
  min-height: 88px;
  font-family: inherit;
  line-height: 1.5;
}
.form-wa__field input:invalid:not(:placeholder-shown),
.form-wa__field textarea:invalid:not(:placeholder-shown) {
  border-color: #FCA5A5;
}
.form-wa__hint {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.92);
  text-align: center;
  margin-top: 0.25rem;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* ---------- 16. Footer ---------- */
.footer {
  background: #0B1A2A;
  color: #CBD5E1;
  font-size: 0.9375rem;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 2.5rem 1rem;
}
.footer__about { margin-top: 0.75rem; }
.footer__title {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.footer__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer__list a { transition: color 0.2s; }
.footer__list a:hover { color: #fff; }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.25rem 0;
  font-size: 0.8125rem;
  text-align: center;
}

/* ---------- 17. Image placeholders ---------- */
.img-placeholder {
  background: var(--gradient-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: 0.875rem;
  text-align: center;
  padding: 0.75rem;
  position: relative;
  overflow: hidden;
}
.img-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 12px,
    rgba(255, 255, 255, 0.4) 12px,
    rgba(255, 255, 255, 0.4) 13px
  );
  pointer-events: none;
}
.img-placeholder__label {
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.85);
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

/* ---------- 18. Floating WhatsApp button (mobile) ---------- */
.fab-wa {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 90;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-whatsapp);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.875rem;
  box-shadow: 0 10px 30px rgba(37, 211, 102, 0.45), 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: transform 0.2s, box-shadow 0.2s;
}
.fab-wa:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 16px 36px rgba(37, 211, 102, 0.55), 0 6px 16px rgba(0, 0, 0, 0.18);
}
.fab-wa:active { transform: translateY(0) scale(1); }
.fab-wa__pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--color-whatsapp);
  z-index: -1;
  animation: fab-pulse 2.2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
@keyframes fab-pulse {
  0%   { transform: scale(1);   opacity: 0.55; }
  100% { transform: scale(1.7); opacity: 0;    }
}

/* ---------- 19. Media queries ---------- */
@media (min-width: 640px) {
  .container { padding: 0 1.5rem; }

  .hero__cta {
    flex-direction: row;
    max-width: none;
    justify-content: center;
  }

  .services { grid-template-columns: repeat(2, 1fr); }
  .stats    { grid-template-columns: repeat(4, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .brands   { grid-template-columns: repeat(3, 1fr); }
  .process  { grid-template-columns: repeat(2, 1fr); }

  .footer__inner { grid-template-columns: 2fr 1fr 1fr; padding: 3rem 1.5rem; }

  .fab-wa { right: 1.5rem; bottom: 1.5rem; }
}

@media (min-width: 1024px) {
  .nav { display: flex; }
  .header__phone { display: inline-flex; }
  .burger { display: none; }

  .services { grid-template-columns: repeat(4, 1fr); }
  .features { grid-template-columns: repeat(4, 1fr); }
  .brands   { grid-template-columns: repeat(6, 1fr); }
  .process  { grid-template-columns: repeat(4, 1fr); }

  .cta__inner { grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }

  /* FAB is mobile/tablet only — on desktop header has phone visible */
  .fab-wa { display: none; }
}

/* ---------- 20. Accessibility ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .fab-wa__pulse { display: none; }
}