/* ==========================================================================
   AIRVAC — ACM Infinity Holdings, LLC
   Glacier-dark theme stylesheet
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-size: 16px;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  color: #E6EEF4;
  background-color: #0E1418;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: #4A8BB7;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #D8E6F0;
}

ul {
  list-style: none;
}

/* ==========================================================================
   VANE NAV
   ========================================================================== */

.vane-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #0E1418;
  border-bottom: 2px solid #4A8BB7;
}

.vane-nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}

.vane-nav__brand {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 4px;
  color: #D8E6F0;
}

.vane-nav__brand:hover {
  color: #D8E6F0;
}

.vane-nav__links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.vane-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  color: #E6EEF4;
  font-weight: 600;
  position: relative;
}

.vane-nav__link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 2px;
  background-color: transparent;
}

.vane-nav__link.is-active {
  color: #FFFFFF;
}

.vane-nav__link.is-active::after {
  background-color: #4A8BB7;
}

.vane-nav__vane {
  width: 15px;
  height: 15px;
  flex: 0 0 15px;
  background-color: #4A8BB7;
  transform: rotate(45deg);
  display: inline-block;
  position: relative;
}

.vane-nav__vane::before {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  right: 3px;
  bottom: 3px;
  background-color: #0E1418;
}

.vane-nav__vane::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  right: 3px;
  bottom: 3px;
  background-color: transparent;
  border: 1px solid #4A8BB7;
}

.vane-nav__toggle {
  display: none;
  background: transparent;
  border: 1px solid #4A8BB7;
  color: #D8E6F0;
  font-size: 24px;
  line-height: 1;
  padding: 6px 12px;
  cursor: pointer;
  border-radius: 4px;
}

/* ==========================================================================
   DRAFT HERO
   ========================================================================== */

.draft-hero {
  background-color: #0E1418;
  border-bottom: 2px solid #162028;
  padding: 88px 0 96px;
  position: relative;
}

.draft-hero__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}

.draft-hero__content {
  max-width: 640px;
  flex: 1 1 60%;
}

.draft-hero__chip {
  display: inline-block;
  background-color: #4A8BB7;
  color: #0E1418;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 26px;
}

.draft-hero__title {
  font-size: 54px;
  line-height: 1.12;
  font-weight: 800;
  color: #E6EEF4;
  margin-bottom: 26px;
  letter-spacing: -1px;
}

.draft-hero__sub {
  font-size: 18px;
  color: #C6D4DE;
  max-width: 560px;
  margin-bottom: 34px;
}

.draft-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.btn {
  display: inline-block;
  font-weight: 700;
  padding: 14px 30px;
  border-radius: 4px;
  font-size: 16px;
  letter-spacing: 0.5px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.btn--primary {
  background-color: #4A8BB7;
  color: #0E1418;
}

.btn--primary:hover {
  color: #0E1418;
  box-shadow: 0 8px 24px rgba(74, 139, 183, 0.35);
}

.btn--outline {
  border: 2px solid #D8E6F0;
  color: #D8E6F0;
  background-color: transparent;
}

.btn--outline:hover {
  color: #0E1418;
  background-color: #D8E6F0;
}

.btn--dark {
  background-color: #0E1418;
  color: #E6EEF4;
}

.btn--dark:hover {
  color: #FFFFFF;
  box-shadow: 0 8px 24px rgba(14, 20, 24, 0.4);
}

/* Ceiling fan graphic */
.draft-hero__fan {
  flex: 0 0 340px;
  max-width: 340px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
}

.fan {
  position: relative;
  width: 220px;
  height: 220px;
}

.fan__hub {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 34px;
  height: 34px;
  background-color: #D8E6F0;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
}

.fan__hub::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 14px;
  background-color: #4A8BB7;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.fan__ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 78px;
  height: 78px;
  border: 3px solid #D8E6F0;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
}

.fan__blade {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 45px;
  height: 12px;
  background-color: #4A8BB7;
  border-radius: 8px;
  transform-origin: center;
}

.fan__blade--n { transform: translate(-50%, -50%) rotate(0deg) translateX(52px); }
.fan__blade--e { transform: translate(-50%, -50%) rotate(90deg) translateX(52px); }
.fan__blade--s { transform: translate(-50%, -50%) rotate(180deg) translateX(52px); }
.fan__blade--w { transform: translate(-50%, -50%) rotate(270deg) translateX(52px); }

.fan__arc {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 170px;
  height: 170px;
  border: 2px solid #4A8BB7;
  border-radius: 50%;
  border-left-color: transparent;
  border-right-color: transparent;
  transform: translate(-50%, -50%);
}

.fan__draft {
  display: flex;
  gap: 10px;
  align-items: center;
}

.fan__dash {
  width: 26px;
  height: 6px;
  background-color: #D8E6F0;
  border-radius: 4px;
}

.fan__dash--short {
  width: 16px;
}

.fan__dash--tall {
  width: 34px;
}

/* ==========================================================================
   DUCT ROWS
   ========================================================================== */

.duct-rows {
  background-color: #0E1418;
  padding: 96px 0 80px;
}

.duct-rows__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #4A8BB7;
  margin-bottom: 12px;
}

.section-title {
  font-size: 38px;
  font-weight: 800;
  color: #E6EEF4;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-lead {
  font-size: 17px;
  color: #C6D4DE;
  max-width: 720px;
  margin-bottom: 48px;
}

.duct-row {
  display: flex;
  align-items: flex-start;
  gap: 26px;
  padding: 34px 0;
  border-bottom: 1px solid #4A8BB7;
}

.duct-row:first-child {
  border-top: 1px solid #4A8BB7;
}

.duct-row__marker {
  flex: 0 0 15px;
  width: 15px;
  height: 15px;
  margin-top: 9px;
  background-color: #4A8BB7;
  transform: rotate(45deg);
  position: relative;
}

.duct-row__marker::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  right: 4px;
  bottom: 4px;
  background-color: #0E1418;
}

.duct-row__body {
  flex: 1;
}

.duct-row__title {
  font-size: 23px;
  font-weight: 700;
  color: #D8E6F0;
  margin-bottom: 10px;
}

.duct-row__text {
  font-size: 16px;
  color: #BECDD8;
  max-width: 860px;
}

/* ==========================================================================
   FLOW STRIP
   ========================================================================== */

.flow-strip {
  background-color: #162028;
  border-top: 2px solid #4A8BB7;
  border-bottom: 2px solid #4A8BB7;
  padding: 60px 0;
}

.flow-strip__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
}

.flow-strip__stat {
  flex: 1;
  text-align: center;
  padding: 0 24px;
  border-right: 1px solid #4A8BB7;
}

.flow-strip__stat:first-child {
  padding-left: 0;
}

.flow-strip__stat:last-child {
  border-right: none;
  padding-right: 0;
}

.flow-strip__numeral {
  font-size: 46px;
  font-weight: 800;
  color: #4A8BB7;
  letter-spacing: -1px;
  line-height: 1.1;
}

.flow-strip__label {
  margin-top: 8px;
  font-size: 14px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #D8E6F0;
}

/* ==========================================================================
   FILTER ROWS
   ========================================================================== */

.filter-rows {
  background-color: #0E1418;
  padding: 96px 0 80px;
}

.filter-rows__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.filter-row {
  display: flex;
  align-items: flex-start;
  gap: 26px;
  padding: 30px 0;
  border-bottom: 1px solid #4A8BB7;
}

.filter-row:first-child {
  border-top: 1px solid #4A8BB7;
}

.filter-row__marker {
  flex: 0 0 15px;
  width: 15px;
  height: 15px;
  margin-top: 9px;
  background-color: #4A8BB7;
  transform: rotate(45deg);
  position: relative;
}

.filter-row__marker::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  right: 4px;
  bottom: 4px;
  background-color: #0E1418;
}

.filter-row__body {
  flex: 1;
}

.filter-row__title {
  font-size: 21px;
  font-weight: 700;
  color: #D8E6F0;
  margin-bottom: 8px;
}

.filter-row__text {
  font-size: 16px;
  color: #BECDD8;
  max-width: 860px;
}

/* ==========================================================================
   CTA BAND
   ========================================================================== */

.cta-band {
  background-color: #4A8BB7;
  padding: 76px 0;
}

.cta-band__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-band__title {
  font-size: 34px;
  font-weight: 800;
  color: #0E1418;
  letter-spacing: -0.5px;
}

.cta-band__text {
  font-size: 17px;
  color: #0E1418;
  max-width: 620px;
  margin-top: 10px;
}

/* ==========================================================================
   VENT FOOTER
   ========================================================================== */

.vent-footer {
  background-color: #0E1418;
}

.vent-footer__top {
  border-top: 2px solid #4A8BB7;
}

.vent-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
  display: flex;
  align-items: flex-start;
  gap: 40px;
}

.vent-footer__zone {
  flex: 1;
  border-right: 1px solid #4A8BB7;
  padding-right: 40px;
}

.vent-footer__zone:last-child {
  border-right: none;
}

.vent-footer__wordmark {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 4px;
  color: #D8E6F0;
}

.vent-footer__company {
  margin-top: 10px;
  font-size: 14px;
  color: #BECDD8;
}

.vent-footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.vent-footer__link {
  color: #E6EEF4;
  font-weight: 600;
}

.vent-footer__link:hover {
  color: #4A8BB7;
}

.vent-footer__contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 15px;
  color: #D8E6F0;
}

.vent-footer__contact a {
  color: #4A8BB7;
  font-weight: 600;
}

.vent-footer__bottom {
  background-color: #4A8BB7;
  padding: 14px 24px;
  text-align: center;
}

.vent-footer__legal {
  font-size: 14px;
  color: #0E1418;
  font-weight: 700;
}

.vent-footer__legal a {
  color: #0E1418;
  text-decoration: underline;
  font-weight: 700;
}

.vent-footer__legal a:hover {
  color: #FFFFFF;
}

/* ==========================================================================
   SHARED SECONDARY PAGE HERO (services / contact)
   ========================================================================== */

.page-banner {
  background-color: #0E1418;
  border-bottom: 2px solid #162028;
  padding: 72px 0 64px;
}

.page-banner__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.page-banner__title {
  font-size: 44px;
  font-weight: 800;
  color: #E6EEF4;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.page-banner__text {
  font-size: 17px;
  color: #C6D4DE;
  max-width: 760px;
}

/* ==========================================================================
   SERVICES PAGE
   ========================================================================== */

.service-list {
  background-color: #0E1418;
  padding: 80px 0 60px;
}

.service-list__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.service-block {
  display: flex;
  align-items: flex-start;
  gap: 26px;
  padding: 36px 0;
  border-bottom: 1px solid #4A8BB7;
}

.service-block__marker {
  flex: 0 0 15px;
  width: 15px;
  height: 15px;
  margin-top: 10px;
  background-color: #4A8BB7;
  transform: rotate(45deg);
  position: relative;
}

.service-block__marker::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  right: 4px;
  bottom: 4px;
  background-color: #0E1418;
}

.service-block__body {
  flex: 1;
}

.service-block__title {
  font-size: 24px;
  font-weight: 700;
  color: #D8E6F0;
  margin-bottom: 10px;
}

.service-block__text {
  font-size: 16px;
  color: #BECDD8;
  max-width: 900px;
}

.process-panel {
  background-color: #162028;
  border-top: 2px solid #4A8BB7;
  border-bottom: 2px solid #4A8BB7;
  padding: 70px 0;
}

.process-panel__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.process-panel__title {
  font-size: 34px;
  font-weight: 800;
  color: #E6EEF4;
  margin-bottom: 14px;
}

.process-panel__lead {
  font-size: 17px;
  color: #C6D4DE;
  max-width: 760px;
  margin-bottom: 44px;
}

.process-steps {
  display: flex;
  gap: 0;
}

.process-step {
  flex: 1;
  padding: 0 28px;
  border-right: 1px solid #4A8BB7;
}

.process-step:first-child {
  padding-left: 0;
}

.process-step:last-child {
  border-right: none;
  padding-right: 0;
}

.process-step__numeral {
  font-size: 38px;
  font-weight: 800;
  color: #4A8BB7;
  line-height: 1.1;
}

.process-step__title {
  font-size: 18px;
  font-weight: 700;
  color: #D8E6F0;
  margin: 10px 0 8px;
}

.process-step__text {
  font-size: 15px;
  color: #BECDD8;
}

/* ==========================================================================
   CONTACT PAGE
   ========================================================================== */

.contact-grid {
  background-color: #0E1418;
  padding: 80px 0 70px;
}

.contact-grid__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 60px;
  flex-wrap: wrap;
}

.contact-form-panel {
  flex: 1 1 60%;
  min-width: 320px;
}

.contact-form-panel__title {
  font-size: 28px;
  font-weight: 800;
  color: #E6EEF4;
  margin-bottom: 8px;
}

.contact-form-panel__lead {
  font-size: 16px;
  color: #C6D4DE;
  margin-bottom: 30px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-form__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact-form__label {
  font-size: 14px;
  font-weight: 700;
  color: #D8E6F0;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.contact-form__input,
.contact-form__textarea {
  font-family: inherit;
  font-size: 16px;
  color: #E6EEF4;
  background-color: #162028;
  border: 1px solid #4A8BB7;
  border-radius: 4px;
  padding: 14px 16px;
  width: 100%;
}

.contact-form__input:focus,
.contact-form__textarea:focus {
  outline: none;
  border-color: #D8E6F0;
  background-color: #1A2530;
}

.contact-form__textarea {
  resize: vertical;
  min-height: 150px;
}

.contact-form__status {
  font-size: 15px;
  font-weight: 600;
  color: #D8E6F0;
  display: none;
}

.contact-form__status.is-visible {
  display: block;
}

.contact-side {
  flex: 1 1 32%;
  min-width: 280px;
}

.contact-card {
  background-color: #162028;
  border: 1px solid #4A8BB7;
  border-radius: 6px;
  padding: 28px;
  margin-bottom: 22px;
}

.contact-card__title {
  font-size: 16px;
  font-weight: 800;
  color: #D8E6F0;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.contact-card__text {
  font-size: 15px;
  color: #E6EEF4;
}

.contact-card__text a {
  color: #4A8BB7;
  font-weight: 600;
}

.hours-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hours-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 15px;
  color: #E6EEF4;
}

.hours-row__day {
  color: #D8E6F0;
  font-weight: 600;
}

.faq-block {
  padding: 60px 0 90px;
  background-color: #0E1418;
}

.faq-block__inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.faq-block__title {
  font-size: 32px;
  font-weight: 800;
  color: #E6EEF4;
  margin-bottom: 34px;
}

.faq-item {
  border-bottom: 1px solid #4A8BB7;
}

.faq-item__question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 20px 0;
  font-family: inherit;
  font-size: 18px;
  font-weight: 700;
  color: #D8E6F0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-item__question::after {
  content: "+";
  font-size: 24px;
  color: #4A8BB7;
  flex: 0 0 auto;
  transition: transform 0.2s ease;
}

.faq-item.is-open .faq-item__question::after {
  transform: rotate(45deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item__answer-inner {
  padding-bottom: 22px;
  font-size: 16px;
  color: #BECDD8;
}

/* ==========================================================================
   SCROLL REVEAL
   ========================================================================== */

.fade-up {
  opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
  .fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

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

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 900px) {
  .draft-hero__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 50px;
  }

  .draft-hero__fan {
    flex: 0 0 auto;
    max-width: none;
    width: 100%;
  }

  .draft-hero__title {
    font-size: 40px;
  }

  .section-title {
    font-size: 30px;
  }

  .flow-strip__numeral {
    font-size: 34px;
  }

  .process-steps {
    flex-direction: column;
    gap: 26px;
  }

  .process-step {
    border-right: none;
    border-bottom: 1px solid #4A8BB7;
    padding: 0 0 26px;
  }

  .process-step:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

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

@media (max-width: 700px) {
  .vane-nav__links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background-color: #0E1418;
    border-bottom: 2px solid #4A8BB7;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 24px 20px;
    gap: 4px;
  }

  .vane-nav__links.is-open {
    display: flex;
  }

  .vane-nav__link {
    padding: 12px 8px;
  }

  .vane-nav__toggle {
    display: block;
  }

  .flow-strip__inner {
    flex-direction: column;
    gap: 28px;
  }

  .flow-strip__stat {
    border-right: none;
    border-bottom: 1px solid #4A8BB7;
    padding: 0 0 26px;
  }

  .flow-strip__stat:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  .vent-footer__inner {
    flex-direction: column;
    gap: 30px;
  }

  .vent-footer__zone {
    border-right: none;
    border-bottom: 1px solid #4A8BB7;
    padding: 0 0 24px;
  }

  .vent-footer__zone:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  .vent-footer__links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 18px;
  }

  .draft-hero__title {
    font-size: 34px;
  }

  .fan {
    transform: scale(0.85);
  }
}