/* ============================================================
   AEROTECH SMART SOLUTIONS — styles.css
   Dark canvas, 3×3 pillars
   ============================================================ */

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

:root {
  --void:    #050506;
  --surface: #101012;
  --surface-raised: #18181c;
  --white:   var(--surface-raised);
  --bg:      #141418;
  --text:    #f5f5f7;
  --sub:     #a1a1a6;
  --light:   #6e6e73;
  --border:  rgba(255,255,255,0.1);

  /* Pillar colours */
  --hvac:      #007AFF;
  --hvac-l:    rgba(0,122,255,0.14);
  --hvac-m:    rgba(0,122,255,0.22);
  --green:     #00A843;
  --green-l:   rgba(0,168,67,0.14);
  --green-m:   rgba(0,168,67,0.22);
  --blue:      #FCD116;
  --blue-l:    rgba(252,209,22,0.16);
  --blue-m:    rgba(252,209,22,0.24);
  --blue-text: #e8c84a;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --r-s:  2px;
  --r-m:  4px;
  --r-l:  4px;
  --r-xl: 4px;

  --sh-s:  0 2px 16px rgba(0,0,0,0.35);
  --sh-m:  0 8px 40px rgba(0,0,0,0.45);
  --sh-l:  0 24px 72px rgba(0,0,0,0.5);

  --ease:  all 0.3s cubic-bezier(0.4,0,0.2,1);
  --slow:  all 0.6s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--surface);
  line-height: 1.6;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a  { color: inherit; }
button { font-family: var(--font); }

/* ── Scroll Progress Bar ── */
.scroll-prog {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--hvac), var(--green), var(--blue));
  z-index: 1002; transition: width .08s linear;
}

/* ── Loading Screen ── */
.loader {
  position: fixed; inset: 0; background: var(--void); z-index: 9998;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 28px;
  padding-top: clamp(36px, 7vh, 88px);
  box-sizing: border-box;
  transition: opacity .55s ease, visibility .55s ease;
}
.loader.gone { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.loader-wordmark {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
  line-height: 1;
}
.loader-tagline {
  font-size: 8px;
  font-weight: 300;
  letter-spacing: 0.48em;
  text-indent: 0.48em;
  text-transform: uppercase;
  color: rgba(245, 245, 247, 0.38);
  line-height: 1;
}
.loader-track { width: 180px; height: 2px; background: var(--border); border-radius: 1px; overflow: hidden; }
.loader-fill {
  height: 100%; width: 0;
  background: linear-gradient(90deg, var(--hvac), var(--green), var(--blue));
  animation: loadFill 1.6s cubic-bezier(.4,0,.2,1) forwards;
}
@keyframes loadFill { to { width: 100%; } }

/* ── Container ── */
.wrap { max-width: 1200px; width: 100%; margin: 0 auto; padding: 0 24px; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 22px; border-radius: 4px; font-size: 14px; font-weight: 600;
  text-decoration: none; transition: var(--ease); cursor: pointer; border: none;
  letter-spacing: -0.1px; white-space: nowrap;
}
.btn-dark  { background: var(--text);  color: var(--void); }
.btn-dark:hover  { background: #e8e8ed; transform: translateY(-1px); box-shadow: var(--sh-m); }
.btn-ghost { background: transparent; color: var(--text); border: 1.5px solid var(--border); }
.btn-ghost:hover { background: rgba(255,255,255,0.06); transform: translateY(-1px); }
.btn-hvac  { background: var(--hvac);  color: #fff; }
.btn-hvac:hover  { background: #e05a00; transform: translateY(-1px); }
.btn-green { background: var(--green); color: #fff; }
.btn-green:hover { background: #008c38; transform: translateY(-1px); }
.btn-blue  { background: var(--blue);  color: #fff; }
.btn-blue:hover  { background: #005bb5; transform: translateY(-1px); }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-sm { padding: 8px 16px; font-size: 12px; }
.btn svg { width: 16px; height: 16px; }

/* ── Nav ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 22px 0; transition: var(--ease);
}
.nav.inked {
  background: rgba(16,16,18,0.88); backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px); padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text);
  flex-shrink: 0;
}
.nav-logo-icon { width: 36px; height: 36px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.nav-logo-icon .brand-logo,
.about-card-logo .brand-logo { width: 100%; height: 100%; object-fit: contain; display: block; }
.loader-logo {
  width: 56px;
  height: 56px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}
.loader-logo .brand-logo { width: 100%; height: 100%; object-fit: contain; }
.foot-top .brand-logo--light { filter: drop-shadow(0 2px 12px rgba(0,0,0,.35)); }
.nav-logo-label { font-size: 15px; font-weight: 800; letter-spacing: -0.4px; line-height: 1.15; }
.nav-logo-sub { font-size: 9px; font-weight: 600; color: var(--sub); letter-spacing: 0.8px; text-transform: uppercase; display: block; }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a {
  text-decoration: none; font-size: 13.5px; font-weight: 500; color: var(--sub);
  transition: var(--ease); letter-spacing: -0.1px;
}
.nav-links a:hover { color: var(--text); }
.nav-links__products {
  display: flex;
  align-items: center;
}
.nav-products {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: not-allowed;
  user-select: none;
  pointer-events: none;
}
.nav-products__strike {
  position: relative;
  display: inline-block;
}
.nav-products__strike::after {
  content: '';
  position: absolute;
  left: -3px;
  right: -3px;
  top: 50%;
  height: 1px;
  background: rgba(255, 255, 255, 0.32);
  transform: translateY(-50%) rotate(-4deg);
  pointer-events: none;
}
.nav-products__label {
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: -0.1px;
  color: var(--light);
  opacity: 0.42;
}
.nav-products__soon {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--light);
  opacity: 0.38;
}
.nav-right { display: flex; align-items: center; gap: 12px; }

/* Language Toggle */
.lang-pill {
  display: flex; align-items: center; gap: 2px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 4px;
}
.lang-pill button {
  background: none; border: none; font-size: 11px; font-weight: 700; color: var(--sub);
  cursor: pointer; padding: 4px 10px; border-radius: 2px; transition: var(--ease);
  letter-spacing: 0.4px;
}
.lang-pill button.on { background: var(--surface-raised); color: var(--text); box-shadow: var(--sh-s); }

/* Hamburger */
.ham {
  display: none; flex-direction: column; gap: 5px; cursor: pointer;
  background: none; border: none; padding: 8px;
}
.ham span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--ease); }
.ham.x span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.ham.x span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.ham.x span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile overlay */
.mob {
  position: fixed; inset: 0; background: rgba(5,5,6,0.94); backdrop-filter: blur(20px);
  z-index: 999; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 36px; opacity: 0; pointer-events: none; transition: opacity .3s ease;
}
.mob.show { opacity: 1; pointer-events: all; }
.mob a {
  font-size: 30px; font-weight: 800; color: var(--text); text-decoration: none;
  letter-spacing: -1.5px; transition: var(--ease);
}
.mob a:hover { color: var(--sub); }
.mob-lang { display: flex; gap: 12px; margin-top: 16px; }
.mob-lang button {
  background: none; border: 1.5px solid var(--border); border-radius: 4px;
  padding: 8px 20px; font-size: 13px; font-weight: 700; cursor: pointer; transition: var(--ease);
}
.mob-lang button.on { background: var(--text); border-color: var(--text); color: var(--void); }

.mob-nav-products {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  user-select: none;
}
.mob-nav-products__strike {
  position: relative;
  display: inline-block;
}
.mob-nav-products__strike::after {
  content: '';
  position: absolute;
  left: -6px;
  right: -6px;
  top: 50%;
  height: 2px;
  background: rgba(255, 255, 255, 0.28);
  transform: translateY(-50%) rotate(-3deg);
}
.mob-nav-products__label {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -1.5px;
  color: var(--light);
  opacity: 0.4;
}
.mob-nav-products__soon {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--light);
  opacity: 0.38;
}

/* ── HERO ── */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden; padding: 150px 0 100px;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.orb {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: .13;
  animation: drift 10s ease-in-out infinite;
}
.orb-1 { width: 560px; height: 560px; background: var(--hvac); top: -140px; right: -80px; animation-delay: 0s; }
.orb-2 { width: 420px; height: 420px; background: var(--green); bottom: -80px; left: 5%; animation-delay: 3s; }
.orb-3 { width: 380px; height: 380px; background: var(--blue); top: 30%; right: 18%; animation-delay: 6s; }
@keyframes drift {
  0%,100% { transform: translateY(0) scale(1); }
  50%      { transform: translateY(-30px) scale(1.06); }
}
.hero-content { position: relative; z-index: 1; max-width: 760px; margin: 0 auto; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 100px;
  padding: 7px 18px; font-size: 12.5px; font-weight: 600; color: var(--sub);
  margin-bottom: 36px; letter-spacing: 0.2px;
}
.badge-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: linear-gradient(135deg, var(--hvac), var(--green));
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink { 0%,100%{transform:scale(1);opacity:1} 50%{transform:scale(1.4);opacity:.6} }
.hero-h1 {
  font-size: clamp(54px,9vw,100px); font-weight: 900; line-height: 1.0;
  letter-spacing: -4px; color: var(--text); margin-bottom: 28px;
}
.hero-h1 .grad {
  background: linear-gradient(135deg, var(--hvac) 0%, var(--green) 50%, var(--blue) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-sub {
  font-size: clamp(17px,2.5vw,21px); color: var(--sub); line-height: 1.55;
  margin: 0 auto 52px; max-width: 560px; font-weight: 400; letter-spacing: -0.2px;
}
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }
.hero-strip {
  display: flex; gap: 28px; margin-top: 80px; flex-wrap: wrap;
}
.hero-tag {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600; color: var(--sub); letter-spacing: 0.2px;
}
.hero-tag-dot { width: 8px; height: 8px; border-radius: 50%; }
.scroll-hint {
  position: absolute; bottom: 44px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  font-size: 10px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--light); animation: fadeUp .8s ease 1.8s both;
}
.scroll-mouse {
  width: 22px; height: 34px; border: 2px solid var(--border); border-radius: 11px;
  display: flex; justify-content: center; padding-top: 5px;
}
.scroll-mouse::after {
  content: ''; width: 3px; height: 7px; background: var(--light); border-radius: 3px;
  animation: scrollWheel 2s ease-in-out infinite;
}
@keyframes scrollWheel { 0%{transform:translateY(0);opacity:1} 100%{transform:translateY(10px);opacity:0} }

/* ── News / announcement band ── */
section.news-band {
  padding: 32px 0 36px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.news-band-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}
.news-kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--light);
}
.news-pill {
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  color: rgba(255, 255, 255, 0.88);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: none;
}
.news-band-text {
  font-size: clamp(16px, 2.1vw, 20px);
  font-weight: 600;
  letter-spacing: -0.35px;
  line-height: 1.5;
  color: rgba(245, 245, 247, 0.92);
  margin: 0;
}
/* Canada: whisper-red edges, pure white center */
.news-band-text .canada-mark {
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(
    90deg,
    #fff5f5 0%,
    #fffcfc 22%,
    #ffffff 50%,
    #fffcfc 78%,
    #fff5f5 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Ticker / Marquee ── */
.ticker { background: var(--bg); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); overflow: hidden; padding: 16px 0; }
.ticker-track { display: flex; gap: 48px; animation: slide 25s linear infinite; width: max-content; }
.ticker-track:hover { animation-play-state: paused; }
.ticker-item {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; color: var(--sub); white-space: nowrap;
}
.ticker-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
@keyframes slide { from{transform:translateX(0)} to{transform:translateX(-50%)} }

/* ── Section Commons ── */
section { padding: 120px 0; }
.sec-label {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 1.8px;
  text-transform: uppercase; color: var(--sub); margin-bottom: 16px;
}
.sec-h2 {
  font-size: clamp(36px,5.5vw,58px); font-weight: 900; letter-spacing: -2.5px;
  line-height: 1.05; color: var(--text); margin-bottom: 20px;
}
.sec-p {
  font-size: clamp(16px,2vw,18px); color: var(--sub); line-height: 1.65; max-width: 560px;
}
.center { text-align: center; }
.center .sec-p { margin: 0 auto; }

/* Reveal on scroll */
.rev { opacity: 0; transform: translateY(36px); transition: opacity .7s ease, transform .7s ease; }
.rev.up { opacity: 1; transform: translateY(0); }
.d1 { transition-delay: .1s; } .d2 { transition-delay: .2s; }
.d3 { transition-delay: .3s; } .d4 { transition-delay: .4s; }

/* ── ABOUT ── */
.about { background: var(--bg); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-sub { font-size: 16px; color: var(--sub); line-height: 1.7; margin-top: 20px; }
.values { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 36px; }
.val {
  background: var(--white); border-radius: var(--r-m); padding: 22px;
  border: 1px solid var(--border); transition: var(--ease);
}
.val:hover { transform: translateY(-3px); box-shadow: var(--sh-s); }
.val-icon { font-size: 26px; margin-bottom: 10px; }
.val h4 { font-size: 14px; font-weight: 700; letter-spacing: -0.2px; margin-bottom: 5px; }
.val p { font-size: 12.5px; color: var(--sub); line-height: 1.5; }
.about-card {
  background: var(--white); border-radius: var(--r-xl); padding: 52px 44px;
  box-shadow: var(--sh-l); text-align: center; position: relative;
}
.about-card::before {
  content: ''; position: absolute; inset: -1px; border-radius: calc(var(--r-xl)+1px);
  background: linear-gradient(135deg, rgba(255,107,0,.15), rgba(0,168,67,.15), rgba(0,113,227,.15));
  z-index: -1;
}
.about-card-logo { margin: 0 auto 24px; width: 72px; height: 72px; }
.about-card h3 { font-size: 26px; font-weight: 900; letter-spacing: -1px; margin-bottom: 12px; }
.about-card p { font-size: 15px; color: var(--sub); line-height: 1.65; }
.badges { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 28px; }
.badge {
  display: flex; align-items: center; gap: 6px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 2px;
  padding: 7px 14px; font-size: 11.5px; font-weight: 600; color: var(--sub);
}
.badge .ck { color: var(--green); font-size: 13px; }

/* ── SOLUTIONS ── */
.solutions { background: var(--surface); }
.solutions-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; margin-top: 64px; }
.sol-card {
  border-radius: var(--r-xl); padding: 44px 36px;
  border: 1px solid var(--border); transition: var(--slow); position: relative; overflow: hidden;
  border-top: 3px solid transparent;
}
.sol-card.hvac { border-top-color: var(--hvac); }
.sol-card.grn  { border-top-color: var(--green); }
.sol-card.blu  { border-top-color: var(--blue); }
/* Watermark number */
.sol-card::before {
  content: attr(data-num); position: absolute; top: -10px; right: 20px;
  font-size: 96px; font-weight: 900; letter-spacing: -4px; line-height: 1;
  pointer-events: none; z-index: 0; transition: opacity .4s ease;
  opacity: .05;
}
.sol-card.hvac::before { color: var(--hvac); }
.sol-card.grn::before  { color: var(--green); }
.sol-card.blu::before  { color: var(--blue-text); }
.sol-card:hover::before { opacity: .09; }
.sol-card::after {
  content: ''; position: absolute; inset: 0; opacity: 0; transition: opacity .5s ease;
  border-radius: inherit;
}
.sol-card.hvac::after { background: radial-gradient(ellipse at 80% 10%, var(--hvac-l) 0%, transparent 65%); }
.sol-card.grn::after  { background: radial-gradient(ellipse at 80% 10%, var(--green-l) 0%, transparent 65%); }
.sol-card.blu::after  { background: radial-gradient(ellipse at 80% 10%, var(--blue-l) 0%, transparent 65%); }
.sol-card:hover::after { opacity: 1; }
.sol-card:hover { transform: translateY(-10px); box-shadow: var(--sh-l); }
.sol-card.hvac:hover { border-color: rgba(0,122,255,.3); border-top-color: var(--hvac); }
.sol-card.grn:hover  { border-color: rgba(0,168,67,.3);  border-top-color: var(--green); }
.sol-card.blu:hover  { border-color: rgba(252,209,22,.5); border-top-color: var(--blue); }
.sol-logo { width: 68px; height: 68px; margin-bottom: 28px; position: relative; z-index: 1; display: block; }
.sol-pill {
  display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: 1px;
  text-transform: uppercase; padding: 4px 12px; border-radius: 2px; margin-bottom: 18px;
  position: relative; z-index: 1;
}
.hvac .sol-pill { background: var(--hvac-l); color: var(--hvac); }
.grn  .sol-pill { background: var(--green-l); color: var(--green); }
.blu  .sol-pill { background: var(--blue-l);  color: var(--blue-text); }
.sol-card h3 {
  font-size: 22px; font-weight: 800; letter-spacing: -0.7px; margin-bottom: 12px;
  position: relative; z-index: 1;
}
.sol-card > p {
  font-size: 14.5px; color: var(--sub); line-height: 1.65; margin-bottom: 24px;
  position: relative; z-index: 1;
}
.sol-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 28px; position: relative; z-index: 1; }
.sol-tag {
  font-size: 11.5px; font-weight: 600; padding: 5px 12px; border-radius: 2px; border: 1px solid;
}
.hvac .sol-tag { border-color: rgba(0,122,255,.3);   color: var(--hvac);      background: var(--hvac-l); }
.grn  .sol-tag { border-color: rgba(0,168,67,.3);  color: var(--green);     background: var(--green-l); }
.blu  .sol-tag { border-color: rgba(252,209,22,.5); color: var(--blue-text); background: var(--blue-l); }
.sol-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13.5px; font-weight: 700; text-decoration: none; transition: var(--ease);
  position: relative; z-index: 1;
}
.hvac .sol-link { color: var(--hvac); }
.grn  .sol-link { color: var(--green); }
.blu  .sol-link { color: var(--blue-text); }
.sol-link:hover { gap: 10px; }

/* ── WHO WE SERVE ── */
.serve { background: var(--bg); }
.serve-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; margin-top: 64px; max-width: 900px; margin-left: auto; margin-right: auto; }
.serve-card {
  background: var(--white); border-radius: var(--r-xl); padding: 44px 32px;
  border: 1px solid var(--border); border-top: 3px solid transparent;
  text-align: left; transition: var(--ease); position: relative; overflow: hidden;
}
.serve-card:nth-child(1) { border-top-color: var(--hvac); }
.serve-card:nth-child(2) { border-top-color: var(--green); }
.serve-card:nth-child(3) { border-top-color: var(--blue); }
.serve-card:hover { transform: translateY(-6px); box-shadow: var(--sh-l); }
.serve-icon {
  width: 56px; height: 56px; border-radius: var(--r-l); margin: 0 0 24px;
  display: flex; align-items: center; justify-content: center;
}
.serve-card:nth-child(1) .serve-icon { background: var(--hvac-l); }
.serve-card:nth-child(2) .serve-icon { background: var(--green-l); }
.serve-card:nth-child(3) .serve-icon { background: var(--blue-l); }
.serve-card h3 { font-size: 19px; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 12px; }
.serve-card > p { font-size: 14px; color: var(--sub); line-height: 1.65; }
.serve-feats { margin-top: 22px; text-align: left; }
.serve-feat {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--sub); padding: 8px 0;
  border-top: 1px solid var(--border); font-weight: 500;
}
.serve-feat:first-child { border-top: none; }
.chk {
  width: 18px; height: 18px; border-radius: 50%; background: var(--green-l);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.chk svg { width: 10px; height: 10px; }

/* ── ESTIMATE ── */
.estimate { background: var(--surface); }
.est-box {
  background: var(--bg); border-radius: var(--r-xl); padding: 72px;
  border: 1px solid var(--border); position: relative; overflow: hidden;
}
.est-box::before {
  content: ''; position: absolute; top: -80px; right: -80px;
  width: 360px; height: 360px; border-radius: 50%;
  background: linear-gradient(135deg, var(--hvac-l), var(--green-l));
  filter: blur(70px); opacity: .7; pointer-events: none;
}
.est-head { text-align: center; margin-bottom: 52px; position: relative; }
.est-steps { display: flex; justify-content: center; align-items: center; gap: 0; margin-bottom: 48px; }
.stp-dot {
  width: 34px; height: 34px; border-radius: 50%; border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: var(--sub); background: var(--surface-raised);
  transition: var(--ease); position: relative; z-index: 1;
}
.stp-dot.on   { background: var(--text); border-color: var(--text); color: var(--void); }
.stp-dot.done { background: var(--green); border-color: var(--green); color: #fff; }
.stp-line { width: 64px; height: 2px; background: var(--border); transition: var(--ease); }
.stp-line.done { background: var(--green); }
.form-step { display: none; }
.form-step.on { display: block; animation: fadeUp .4s ease; }
@keyframes fadeUp { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:translateY(0)} }
.svc-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-bottom: 28px; }
.svc-card {
  border: 2px solid var(--border); border-radius: var(--r-l); padding: 28px 18px;
  text-align: center; cursor: pointer; transition: var(--ease); background: var(--surface-raised);
}
.svc-card:hover { transform: translateY(-4px); box-shadow: var(--sh-s); }
.svc-card.picked.hvac { border-color: var(--hvac); background: var(--hvac-l); }
.svc-card.picked.grn  { border-color: var(--green); background: var(--green-l); }
.svc-card.picked.blu  { border-color: var(--blue);  background: var(--blue-l); }
.svc-card svg { width: 44px; height: 44px; margin: 0 auto 12px; display: block; }
.svc-card h4 { font-size: 14.5px; font-weight: 700; letter-spacing: -0.3px; margin-bottom: 4px; }
.svc-card p  { font-size: 11.5px; color: var(--sub); }
.fg { margin-bottom: 18px; }
.frow { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.fl {
  display: block; font-size: 12.5px; font-weight: 600; color: var(--text);
  margin-bottom: 7px; letter-spacing: -0.1px;
}
.fi {
  width: 100%; padding: 13px 17px; border: 1.5px solid var(--border); border-radius: var(--r-m);
  font-size: 14.5px; font-family: var(--font); color: var(--text); background: var(--surface);
  transition: var(--ease); outline: none;
}
.fi:focus { border-color: rgba(255,255,255,0.35); box-shadow: 0 0 0 4px rgba(255,255,255,.06); }
.fi::placeholder { color: var(--light); }
select.fi {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a1a1a6' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px;
  cursor: pointer;
}
textarea.fi { resize: vertical; min-height: 90px; }
input.fi-file {
  padding: 11px 14px; cursor: pointer; font-size: 13.5px; color: var(--sub);
}
input.fi-file::file-selector-button,
input.fi-file::-webkit-file-upload-button {
  margin-right: 14px; padding: 9px 16px; border: none; border-radius: var(--r-s);
  background: var(--text); color: var(--void); font-weight: 600; font-size: 13px;
  font-family: var(--font); cursor: pointer; transition: var(--ease);
}
input.fi-file::file-selector-button:hover,
input.fi-file::-webkit-file-upload-button:hover { opacity: 0.92; }
.apply-box .file-hint {
  font-size: 12px; color: var(--sub); margin: 8px 0 0; line-height: 1.45;
}
.f-nav {
  display: flex; justify-content: space-between; align-items: center; margin-top: 28px;
}
.step-success { text-align: center; padding: 40px 0; }
.ok-icon {
  width: 80px; height: 80px; background: var(--green-l); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; margin: 0 auto 24px;
}
.ok-icon svg { width: 38px; height: 38px; }
.step-success h3 { font-size: 26px; font-weight: 800; letter-spacing: -1px; margin-bottom: 12px; }
.step-success p  { font-size: 15px; color: var(--sub); line-height: 1.65; max-width: 440px; margin: 0 auto; }

/* ── WHY US / STATS ── */
.whyus { background: var(--void); color: var(--text); }
.whyus .sec-label { color: rgba(255,255,255,.45); }
.whyus .sec-h2 { color: var(--text); }
.whyus .sec-p { color: rgba(255,255,255,.55); }
.whyus .why-intro { margin-bottom: 56px; max-width: 560px; }
@media (min-width: 769px) {
  .whyus .why-intro { margin-bottom: 72px; }
}
.stats-row {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 2px; margin: 64px 0; background: rgba(255,255,255,.08);
  border-radius: var(--r-xl); overflow: hidden;
}
.stat {
  background: var(--void); padding: 48px 24px; text-align: center; transition: var(--ease);
}
.stat:hover { background: #121214; }
.stat-num {
  font-size: clamp(36px,5vw,56px); font-weight: 900; letter-spacing: -2px; margin-bottom: 8px;
  background: linear-gradient(135deg, var(--hvac), var(--green));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-lbl { font-size: 13px; color: rgba(255,255,255,.55); font-weight: 500; line-height: 1.45; }
.why-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.why-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-l); padding: 32px; transition: var(--ease);
}
.why-card:hover { background: rgba(255,255,255,.09); transform: translateY(-4px); }
.why-ic {
  width: 46px; height: 46px; border-radius: var(--r-s); background: rgba(255,255,255,.09);
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px;
}
.why-ic svg { width: 22px; height: 22px; }
.why-card h4 { font-size: 16px; font-weight: 700; letter-spacing: -0.4px; margin-bottom: 10px; color: var(--text); }
.why-card p  { font-size: 13.5px; color: rgba(255,255,255,.55); line-height: 1.65; }

/* ── FAQ ── */
.faq { background: var(--bg); }
.faq-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 48px 0 32px; }
.faq-tab {
  padding: 8px 20px; border-radius: 2px; font-size: 13px; font-weight: 600;
  cursor: pointer; border: 1.5px solid var(--border); background: var(--white);
  color: var(--sub); transition: var(--ease);
}
.faq-tab.on { background: var(--text); border-color: var(--text); color: var(--void); }
.faq-tab.hvac.on { background: var(--hvac); border-color: var(--hvac); color: #fff; }
.faq-tab.grn.on  { background: var(--green); border-color: var(--green); color: #fff; }
.faq-tab.blu.on  { background: var(--blue);  border-color: var(--blue); color: var(--void); }
.faq-panel { display: none; max-width: 800px; }
.faq-panel.on { display: block; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 24px 0; cursor: pointer; font-size: 16.5px; font-weight: 600;
  letter-spacing: -0.3px; gap: 16px; transition: var(--ease);
}
.faq-q:hover { color: var(--sub); }
.faq-ico {
  width: 28px; height: 28px; border-radius: 50%; background: var(--bg);
  border: 1px solid var(--border); display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 17px; line-height: 1; transition: var(--ease); color: var(--text);
}
.faq-item.open .faq-ico {
  transform: rotate(45deg); background: var(--text); color: var(--void); border-color: var(--text);
}
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-a-in {
  padding-bottom: 24px; font-size: 15px; color: var(--sub); line-height: 1.75;
}
.faq-item.open .faq-a { max-height: 320px; }

/* ── CONTACT ── */
.contact { background: var(--surface); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.c-items { display: flex; flex-direction: column; gap: 24px; }
.c-item { display: flex; gap: 16px; align-items: flex-start; }
.c-ic {
  width: 48px; height: 48px; border-radius: var(--r-m); background: var(--bg);
  border: 1px solid var(--border); display: flex; align-items: center;
  justify-content: center; flex-shrink: 0;
}
.c-ic svg { width: 22px; height: 22px; }
.c-item h4 {
  font-size: 11px; font-weight: 700; color: var(--sub);
  text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 4px;
}
.c-item p, .c-item a {
  font-size: 15.5px; font-weight: 500; color: var(--text); text-decoration: none;
  display: block; transition: var(--ease);
}
.c-item a:hover { color: var(--blue); }
.c-form {
  background: var(--bg); border-radius: var(--r-xl); padding: 40px;
  border: 1px solid var(--border);
}
.c-form h3 { font-size: 22px; font-weight: 800; letter-spacing: -0.7px; margin-bottom: 24px; }

/* ── FOOTER ── */
footer { background: var(--void); color: rgba(255,255,255,.65); padding: 68px 0 32px; }
.foot-top {
  display: grid; grid-template-columns: 2.2fr 1fr 1fr 1fr; gap: 48px;
  padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,.1); margin-bottom: 32px;
}
.foot-desc { font-size: 13.5px; line-height: 1.75; color: rgba(255,255,255,.45); max-width: 280px; margin: 16px 0 24px; }
.foot-social { display: flex; gap: 10px; }
.foot-soc {
  width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,.1);
  display: flex; align-items: center; justify-content: center;
  transition: var(--ease); text-decoration: none; color: rgba(255,255,255,.7);
}
.foot-soc svg { width: 16px; height: 16px; }
.foot-soc:hover { background: rgba(255,255,255,.2); transform: translateY(-2px); }
.foot-col h5 {
  font-size: 11px; font-weight: 700; color: rgba(255,255,255,.35);
  text-transform: uppercase; letter-spacing: 1.2px; margin-bottom: 20px;
}
.foot-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.foot-col a { color: rgba(255,255,255,.65); text-decoration: none; font-size: 13.5px; transition: var(--ease); }
.foot-col a:hover { color: #fff; }
.foot-bot { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; }
.foot-bot p { font-size: 12.5px; color: rgba(255,255,255,.35); }
.foot-bot-links { display: flex; gap: 22px; }
.foot-bot-links a { font-size: 12.5px; color: rgba(255,255,255,.35); text-decoration: none; transition: var(--ease); }
.foot-bot-links a:hover { color: rgba(255,255,255,.65); }

/* ── Floating Contact Button ── */
.flt {
  position: fixed; bottom: 32px; right: 32px; z-index: 500;
  display: flex; flex-direction: column; align-items: flex-end; gap: 12px;
}
.flt-menu {
  display: flex; flex-direction: column; gap: 10px;
  opacity: 0; pointer-events: none; transform: translateY(10px); transition: var(--ease);
}
.flt-menu.show { opacity: 1; pointer-events: all; transform: translateY(0); }
.flt-btn {
  display: flex; align-items: center; gap: 10px; background: var(--surface-raised);
  border: 1px solid var(--border); border-radius: 4px; padding: 10px 20px 10px 10px;
  box-shadow: var(--sh-m); text-decoration: none; color: var(--text);
  font-size: 13.5px; font-weight: 600; transition: var(--ease); white-space: nowrap;
}
.flt-btn:hover { transform: translateX(-4px); box-shadow: var(--sh-l); }
.flt-ic {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.flt-ic svg { width: 18px; height: 18px; }
.flt-btn.wa  .flt-ic { background: #E8F8EE; }
.flt-btn.ph  .flt-ic { background: rgba(0,122,255,0.10); }
.flt-btn.em  .flt-ic { background: var(--hvac-l); }
.flt-main {
  width: 58px; height: 58px; border-radius: 50%; background: var(--void);
  color: #fff;
  border: 1px solid var(--border); display: flex; align-items: center; justify-content: center;
  cursor: pointer; box-shadow: var(--sh-l); transition: var(--ease);
  position: relative;
}
.flt-main svg { width: 24px; height: 24px; }
.flt-main:hover { transform: scale(1.07); }
.flt-main::before {
  content: ''; position: absolute; inset: -3px; border-radius: 50%; z-index: -1;
  background: linear-gradient(135deg, var(--hvac), var(--green), var(--blue));
  animation: spin 5s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.flt-dot {
  position: absolute; top: 2px; right: 2px; width: 12px; height: 12px;
  background: var(--green); border-radius: 50%; border: 2px solid var(--surface);
  animation: blink 2s ease-in-out infinite;
}

/* ── Toast ── */
.toast {
  position: fixed; top: 100px; right: 32px; background: var(--surface-raised); color: var(--text);
  padding: 16px 22px; border-radius: var(--r-m); font-size: 13.5px; font-weight: 500;
  z-index: 2000; transform: translateX(120%); transition: transform .4s cubic-bezier(.4,0,.2,1);
  max-width: 300px; box-shadow: var(--sh-l); display: flex; align-items: center; gap: 10px;
}
.toast.show { transform: translateX(0); }
.toast-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); flex-shrink: 0; }

/* ── Careers (inline on index) ── */
.page-hero {
  padding: 160px 0 80px; background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.page-hero-inner { max-width: 680px; }
.jobs-section { padding: 100px 0; background: var(--surface); }
.job-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 48px 0 36px; }
.job-tab {
  padding: 8px 20px; border-radius: 2px; font-size: 13px; font-weight: 600;
  cursor: pointer; border: 1.5px solid var(--border); background: var(--surface-raised);
  color: var(--sub); transition: var(--ease);
}
.job-tab.on { background: var(--void); border-color: var(--border); color: var(--text); }
.job-tab.hvac.on { background: var(--hvac); border-color: var(--hvac); color: #fff; }
.job-tab.grn.on  { background: var(--green); border-color: var(--green); color: #fff; }
.job-tab.blu.on  { background: var(--blue); border-color: var(--blue); color: var(--void); }
.job-tab.sales.on { background: var(--hvac); border-color: var(--hvac); color: #fff; }
.job-tab.tech.on  { background: var(--green); border-color: var(--green); color: #fff; }
.jobs-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
.job-card {
  border: 1px solid var(--border); border-radius: var(--r-xl);
  padding: 32px; transition: var(--ease); background: var(--surface-raised);
  border-top: 3px solid transparent; cursor: pointer;
  text-decoration: none; color: var(--text); display: block;
}
.job-card.hvac { border-top-color: var(--hvac); }
.job-card.grn  { border-top-color: var(--green); }
.job-card.blu  { border-top-color: var(--blue); }
.job-card.sales { border-top-color: var(--hvac); }
.job-card.tech  { border-top-color: var(--green); }
.job-card:hover { transform: translateY(-4px); box-shadow: var(--sh-m); }
.job-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.job-tag {
  font-size: 11px; font-weight: 700; padding: 4px 10px; border-radius: 2px;
  letter-spacing: 0.5px; text-transform: uppercase;
}
.job-tag.hvac { background: var(--hvac-l); color: var(--hvac); }
.job-tag.grn  { background: var(--green-l); color: var(--green); }
.job-tag.blu  { background: var(--blue-l); color: var(--blue-text); }
.job-tag.gen  { background: var(--bg); color: var(--sub); }
.job-tag.sales { background: var(--hvac-l); color: var(--hvac); }
.job-tag.tech  { background: var(--green-l); color: var(--green); }
.job-card h3 { font-size: 18px; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 8px; }
.job-card p  { font-size: 13.5px; color: var(--sub); line-height: 1.6; margin-bottom: 20px; }
.job-card-foot {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 16px; border-top: 1px solid var(--border);
}
.job-detail { font-size: 12px; color: var(--sub); display: flex; align-items: center; gap: 5px; }
.job-detail svg { width: 13px; height: 13px; opacity: .6; }
.job-apply-link {
  font-size: 12.5px; font-weight: 700; display: flex; align-items: center; gap: 5px;
  transition: var(--ease);
}
.job-card.hvac .job-apply-link { color: var(--hvac); }
.job-card.grn  .job-apply-link { color: var(--green); }
.job-card.blu  .job-apply-link { color: var(--blue-text); }
.job-card.sales .job-apply-link { color: var(--hvac); }
.job-card.tech  .job-apply-link { color: var(--green); }
.job-apply-link { display: inline-flex; align-items: center; gap: 6px; }
.job-apply-link:hover { gap: 8px; }
.collab-band {
  background: var(--void); color: #fff; padding: 80px 0;
}
.collab-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.collab-band .sec-label { color: rgba(255,255,255,.4); }
.collab-band .sec-h2 { color: #fff; }
.collab-perks { display: flex; flex-direction: column; gap: 16px; margin-top: 36px; }
.collab-perk {
  display: flex; gap: 14px; align-items: flex-start;
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-m); padding: 18px;
}
.collab-perk-ic {
  width: 38px; height: 38px; border-radius: var(--r-s); background: rgba(255,255,255,.09);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.collab-perk-ic svg { width: 18px; height: 18px; }
.collab-perk h5 { font-size: 13.5px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.collab-perk p  { font-size: 12.5px; color: rgba(255,255,255,.5); line-height: 1.5; }
.apply-section { padding: 100px 0; background: var(--bg); }
.apply-box {
  max-width: 760px; margin: 0 auto;
  background: var(--surface-raised); border-radius: var(--r-xl);
  border: 1px solid var(--border); padding: 64px;
  box-shadow: var(--sh-m);
}
.apply-box h2 { font-size: 32px; font-weight: 900; letter-spacing: -1.2px; margin-bottom: 8px; }
.apply-box > p { font-size: 15px; color: var(--sub); margin-bottom: 40px; }
.apply-section-label {
  font-size: 10px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--sub); margin-bottom: 16px; margin-top: 32px; display: block;
  padding-bottom: 10px; border-bottom: 1px solid var(--border);
}
.apply-section-label:first-of-type { margin-top: 0; }
.careers-spec-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-bottom: 18px; }
.spec-item {
  border: 1.5px solid var(--border); border-radius: var(--r-m); padding: 12px 14px;
  cursor: pointer; transition: var(--ease); display: flex; align-items: center; gap: 8px;
}
.spec-item:hover { border-color: var(--text); }
.spec-item input[type="checkbox"] { display: none; }
.spec-item.checked { border-color: var(--green); background: var(--green-l); }
.spec-check {
  width: 16px; height: 16px; border-radius: 3px; border: 1.5px solid var(--border);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: var(--ease);
}
.spec-item.checked .spec-check { background: var(--green); border-color: var(--green); }
.spec-item.checked .spec-check svg { display: block; }
.spec-check svg { display: none; width: 10px; height: 10px; }
.spec-label { font-size: 12px; font-weight: 600; }
.apply-success { text-align: center; padding: 60px 20px; display: none; }
.apply-success .ok-icon { margin: 0 auto 24px; }
.apply-success h3 { font-size: 26px; font-weight: 800; letter-spacing: -1px; margin-bottom: 12px; }
.apply-success p  { font-size: 15px; color: var(--sub); line-height: 1.65; max-width: 440px; margin: 0 auto 24px; }
@media (max-width: 1024px) {
  .collab-grid { grid-template-columns: 1fr; gap: 48px; }
  .jobs-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .page-hero { padding: 120px 0 60px; }
  .apply-box { padding: 32px 24px; }
  .careers-spec-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .careers-spec-grid { grid-template-columns: 1fr; }
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .solutions-grid, .serve-grid, .why-cards, .stats-row { grid-template-columns: 1fr 1fr; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .foot-top { grid-template-columns: 1fr 1fr; }
  .est-box { padding: 48px 36px; }
}
@media (max-width: 768px) {
  .nav-links, .nav-right .btn { display: none; }
  .ham { display: flex; }
  section { padding: 80px 0; }
  .solutions-grid, .serve-grid, .why-cards, .stats-row, .foot-top { grid-template-columns: 1fr; }
  .frow { grid-template-columns: 1fr; }
  .svc-grid { grid-template-columns: 1fr; }
  .hero { padding: 120px 0 64px; }
  .est-box { padding: 32px 22px; }
  .values { grid-template-columns: 1fr; }
  .foot-bot { flex-direction: column; text-align: center; }
  .foot-bot-links { flex-wrap: wrap; justify-content: center; }
  .flt { bottom: 20px; right: 20px; }
}
@media (max-width: 480px) {
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .hero-strip { gap: 16px; }
}