/* ============================================================
   Halo Air — Alirko LIGHT / CLEAN reference system
   The counterpart to the dark showcases (Verano / UGP / Cypress).
   Proves: light can be premium. Premium = restraint + type +
   whitespace + one accent + soft depth — NOT darkness.
   Hand-written system (no Tailwind). Foundation motion only.
   ============================================================ */
:root {
  --bg: #FBFCFE;          /* near-white, faintly cool */
  --bg-2: #F2F5FA;        /* alt sections / wash */
  --surface: #FFFFFF;     /* cards */
  --ink: #111722;         /* near-black text */
  --ink-2: #515C6E;       /* muted body */
  --ink-3: #8b95a6;       /* faint labels */
  --line: rgba(17,23,34,.10);
  --line-2: rgba(17,23,34,.055);
  --accent: #1E6BFF;      /* one calm, trustworthy blue */
  --accent-deep: #1550c9;
  --accent-soft: rgba(30,107,255,.10);
  --ok: #16A06A;          /* checkmark green, used tiny */
  --shadow-sm: 0 1px 2px rgba(17,23,34,.04), 0 2px 8px rgba(17,23,34,.05);
  --shadow: 0 6px 16px rgba(17,23,34,.07), 0 18px 40px rgba(17,23,34,.07);
  --shadow-lg: 0 12px 30px rgba(30,107,255,.14), 0 30px 60px rgba(17,23,34,.10);
  --sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --maxw: 1180px;
  --pad: clamp(20px, 5vw, 64px);
  --radius: 18px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--ink); font-family: var(--sans);
  font-weight: 400; line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad); }
.section { padding-block: clamp(64px, 10vw, 128px); position: relative; }
.section.wash { background: var(--bg-2); }

/* ---------- type ---------- */
h1, h2, h3 { letter-spacing: -0.02em; line-height: 1.08; font-weight: 700; color: var(--ink); }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; font-size: 12.5px; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.eyebrow::before { content: ""; width: 20px; height: 2px; border-radius: 2px; background: var(--accent); }
.eyebrow.center { justify-content: center; }
.head { max-width: 640px; }
.head.center { max-width: 720px; margin-inline: auto; text-align: center; }
.head h2 { font-size: clamp(30px, 4.6vw, 50px); margin-top: 16px; }
.head p { margin-top: 18px; color: var(--ink-2); font-size: clamp(16px, 1.9vw, 18.5px); }
.serif-accent { font-family: var(--serif); font-style: italic; font-weight: 400; color: var(--accent); letter-spacing: 0; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 9px; font-weight: 600; font-size: 15.5px;
  padding: 14px 22px; border-radius: 12px; transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .25s; cursor: pointer; border: 0; }
.btn .ico { width: 17px; height: 17px; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 6px 18px rgba(30,107,255,.28); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(30,107,255,.36); }
.btn-ghost { background: var(--surface); color: var(--ink); border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.btn-ghost:hover { transform: translateY(-2px); border-color: rgba(17,23,34,.2); }
.btn-lg { padding: 16px 26px; font-size: 16.5px; }

/* ---------- header ---------- */
header { position: fixed; top: 0; left: 0; right: 0; z-index: 50; transition: background .3s, box-shadow .3s, border-color .3s;
  border-bottom: 1px solid transparent; }
header.scrolled { background: rgba(251,252,254,.82); backdrop-filter: saturate(160%) blur(12px);
  border-bottom-color: var(--line-2); box-shadow: 0 1px 0 rgba(17,23,34,.02); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 74px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; letter-spacing: -0.02em; }
.brand .glyph { width: 34px; height: 34px; border-radius: 9px; background: var(--accent); display: grid; place-items: center; box-shadow: 0 4px 12px rgba(30,107,255,.3); }
.brand .glyph svg { width: 19px; height: 19px; color: #fff; }
.brand b { font-weight: 800; } .brand span { color: var(--accent); }
.nav-links { display: flex; gap: 28px; font-size: 15px; color: var(--ink-2); font-weight: 500; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-phone { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--ink); font-size: 15.5px; }
.nav-phone .ph { width: 30px; height: 30px; border-radius: 8px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; }
.nav-phone svg { width: 15px; height: 15px; }
.menu-btn { display: none; }

/* ---------- hero ---------- */
.hero { padding-top: 130px; padding-bottom: clamp(60px, 8vw, 96px); position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(80% 60% at 78% 8%, rgba(30,107,255,.10), transparent 60%),
              radial-gradient(60% 50% at 0% 100%, rgba(30,107,255,.06), transparent 55%); }
.hero-grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: clamp(32px, 5vw, 68px); align-items: center; }
.hero h1 { font-size: clamp(38px, 5.6vw, 66px); font-weight: 800; letter-spacing: -0.035em; }
.hero .sub { margin-top: 22px; font-size: clamp(17px, 2vw, 20px); color: var(--ink-2); max-width: 48ch; }
.hero .cta-row { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 13px; }
.hero .trust { margin-top: 30px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; font-size: 14px; color: var(--ink-2); }
.hero .trust b { color: var(--ink); }
.hero .trust .star { color: #F5A623; letter-spacing: 1px; }
.hero .trust .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--line); }

/* hero visual (no photo dependency — clean CSS "comfort" panel) */
.hero-card { position: relative; background: var(--surface); border: 1px solid var(--line-2); border-radius: 24px;
  box-shadow: var(--shadow); padding: 34px 32px; overflow: hidden;
  display: flex; flex-direction: column; align-items: center; gap: 26px;
  background-image: radial-gradient(120% 90% at 50% -12%, rgba(30,107,255,.12), transparent 60%); }
.hero-card .tempchip { align-self: flex-start; background: var(--accent-soft); color: var(--accent-deep); font-weight: 700;
  font-size: 13px; padding: 8px 13px; border-radius: 100px; display: inline-flex; gap: 7px; align-items: center; }
/* centered thermostat dial — reads as an intentional device, no photo needed */
.hero-card .dial { position: relative; z-index: 1; width: min(78%, 300px); aspect-ratio: 1; border-radius: 50%;
  display: grid; place-items: center; text-align: center;
  background: radial-gradient(circle at 50% 38%, #ffffff, #eaf1ff);
  box-shadow: inset 0 0 0 2px rgba(30,107,255,.20), inset 0 0 0 15px rgba(30,107,255,.07), inset 0 0 0 30px rgba(30,107,255,.045), 0 20px 46px rgba(30,107,255,.20); }
.hero-card .big-temp { font-size: clamp(52px, 7.5vw, 82px); font-weight: 800; letter-spacing: -0.04em; line-height: 1; color: var(--ink); }
.hero-card .big-temp span { font-size: .4em; color: var(--accent); font-weight: 700; vertical-align: super; }
/* caption pinned near the bottom of the ring so 72° sits DEAD-CENTER in the circle */
.hero-card .cap { position: absolute; left: 0; right: 0; bottom: 38px; color: var(--ink-2); font-size: 13.5px; }
.hero-card .floaty { align-self: center; background: var(--surface); border: 1px solid var(--line-2);
  box-shadow: var(--shadow); border-radius: 14px; padding: 12px 15px; display: inline-flex; align-items: center; gap: 11px; }
.hero-card .floaty .ic { width: 34px; height: 34px; border-radius: 9px; background: var(--ok); color: #fff; display: grid; place-items: center; }
.hero-card .floaty .ic svg { width: 18px; height: 18px; }
.hero-card .floaty b { font-size: 14px; } .hero-card .floaty small { display: block; color: var(--ink-3); font-size: 12px; }

/* ---------- stat / trust bar ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-2);
  border: 1px solid var(--line-2); border-radius: var(--radius); overflow: hidden; }
.stat { background: var(--surface); padding: 26px 22px; text-align: center; }
.stat .n { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; letter-spacing: -0.03em; }
.stat .n span { color: var(--accent); }
.stat .l { margin-top: 4px; color: var(--ink-2); font-size: 13.5px; }

/* ---------- services ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 52px; }
.svc { background: var(--surface); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s; }
.svc:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(30,107,255,.28); }
.svc .ic { width: 50px; height: 50px; border-radius: 13px; background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; margin-bottom: 18px; transition: background .3s, color .3s; }
.svc:hover .ic { background: var(--accent); color: #fff; }
.svc .ic svg { width: 24px; height: 24px; }
.svc h3 { font-size: 19.5px; font-weight: 700; }
.svc p { margin-top: 9px; color: var(--ink-2); font-size: 15px; }
.svc .more { margin-top: 15px; font-size: 14px; font-weight: 600; color: var(--accent); display: inline-flex; gap: 6px; }

/* ---------- why / split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 72px); align-items: center; }
.checks { list-style: none; margin-top: 26px; display: grid; gap: 16px; }
.checks li { display: flex; gap: 13px; align-items: flex-start; }
.checks .ck { flex: none; width: 26px; height: 26px; border-radius: 8px; background: rgba(22,160,106,.12); color: var(--ok);
  display: grid; place-items: center; margin-top: 1px; }
.checks .ck svg { width: 14px; height: 14px; }
.checks b { font-weight: 700; } .checks p { color: var(--ink-2); font-size: 14.5px; margin-top: 2px; }
.why-visual { background: linear-gradient(160deg, #eaf1ff, #f6f9ff); border: 1px solid var(--line-2); border-radius: 24px;
  box-shadow: var(--shadow); padding: 34px; min-height: 380px; display: flex; flex-direction: column; justify-content: center; gap: 18px; }
.why-visual .qbadge { align-self: flex-start; background: var(--surface); border-radius: 14px; box-shadow: var(--shadow-sm); padding: 16px 20px; display: flex; gap: 14px; align-items: center; }
.why-visual .qbadge .ic { width: 42px; height: 42px; border-radius: 11px; background: var(--accent); color: #fff; display: grid; place-items: center; }
.why-visual .qbadge .ic svg { width: 22px; height: 22px; }
.why-visual .qbadge b { font-size: 22px; } .why-visual .qbadge small { display: block; color: var(--ink-3); font-size: 12.5px; }

/* ---------- plan band ---------- */
.band { background: var(--ink); color: #fff; border-radius: 26px; padding: clamp(30px, 5vw, 56px);
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 34px; align-items: center; position: relative; overflow: hidden; }
.band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(70% 120% at 100% 0%, rgba(30,107,255,.5), transparent 60%); opacity: .5; }
.band > * { position: relative; z-index: 1; }
.band h2 { color: #fff; font-size: clamp(26px, 3.6vw, 40px); }
.band p { color: rgba(255,255,255,.7); margin-top: 14px; max-width: 42ch; }
.band .perks { list-style: none; display: grid; gap: 11px; }
.band .perks li { display: flex; gap: 10px; align-items: center; color: rgba(255,255,255,.9); font-size: 15px; }
.band .perks svg { width: 18px; height: 18px; color: #6fa8ff; flex: none; }
.band .price { font-size: clamp(40px, 6vw, 62px); font-weight: 800; letter-spacing: -0.03em; }
.band .price small { font-size: 17px; color: rgba(255,255,255,.6); font-weight: 600; }

/* ---------- process ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 52px; }
.step { position: relative; }
.step .no { width: 44px; height: 44px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line);
  box-shadow: var(--shadow-sm); display: grid; place-items: center; font-weight: 800; color: var(--accent); margin-bottom: 16px; }
.step h3 { font-size: 18px; } .step p { margin-top: 8px; color: var(--ink-2); font-size: 14.5px; }

/* ---------- reviews ---------- */
.rev-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 52px; }
.rev { background: var(--surface); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-sm); }
.rev .stars { color: #F5A623; letter-spacing: 2px; font-size: 15px; }
.rev p { margin-top: 14px; color: var(--ink); font-size: 15.5px; line-height: 1.6; }
.rev .who { margin-top: 18px; display: flex; align-items: center; gap: 12px; }
.rev .av { width: 40px; height: 40px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-deep); display: grid; place-items: center; font-weight: 700; }
.rev .who b { font-size: 14.5px; display: block; } .rev .who small { color: var(--ink-3); font-size: 12.5px; }

/* ---------- areas ---------- */
.areas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; }
.area { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 18px; font-weight: 600; font-size: 14.5px;
  display: inline-flex; align-items: center; gap: 9px; box-shadow: var(--shadow-sm); }
.area svg { width: 15px; height: 15px; color: var(--accent); }

/* ---------- faq ---------- */
.faq { max-width: 780px; margin: 48px auto 0; }
.qa { border-top: 1px solid var(--line); }
.qa:last-child { border-bottom: 1px solid var(--line); }
.qa button { width: 100%; background: none; border: 0; cursor: pointer; text-align: left; padding: 22px 0;
  display: flex; justify-content: space-between; align-items: center; gap: 20px; font: inherit; color: var(--ink); font-weight: 600; font-size: 17px; }
.qa .ic { flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; transition: transform .35s var(--ease), background .3s, color .3s; }
.qa .ic svg { width: 14px; height: 14px; }
.qa.open .ic { transform: rotate(45deg); background: var(--accent); color: #fff; }
.qa .a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .4s var(--ease); }
.qa.open .a { grid-template-rows: 1fr; }
.qa .a > div { overflow: hidden; }
.qa .a p { padding-bottom: 22px; color: var(--ink-2); font-size: 15.5px; max-width: 66ch; }

/* ---------- contact ---------- */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 64px); align-items: start; }
.contact .big-call { margin-top: 22px; display: inline-flex; align-items: center; gap: 13px; font-size: clamp(26px, 3.5vw, 38px); font-weight: 800; letter-spacing: -0.02em; }
.contact .big-call .ph { width: 52px; height: 52px; border-radius: 14px; background: var(--accent); color: #fff; display: grid; place-items: center; box-shadow: 0 8px 20px rgba(30,107,255,.3); }
.contact .big-call .ph svg { width: 24px; height: 24px; }
.cform { background: var(--surface); border: 1px solid var(--line-2); border-radius: 22px; padding: 30px; box-shadow: var(--shadow); }
.cform .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { margin-bottom: 15px; } .field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 7px; }
.field input, .field select, .field textarea { width: 100%; font: inherit; font-size: 15px; padding: 12px 14px; border: 1px solid var(--line);
  border-radius: 11px; background: var(--bg); color: var(--ink); transition: border-color .2s, box-shadow .2s; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 0; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

/* ---------- footer ---------- */
footer { background: var(--ink); color: rgba(255,255,255,.72); padding-block: 56px 34px; }
footer .cols { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 34px; padding-bottom: 34px; border-bottom: 1px solid rgba(255,255,255,.1); }
footer .foot-brand p { margin-top: 14px; font-size: 14.5px; max-width: 34ch; color: rgba(255,255,255,.6); }
footer .fb-lock { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: #fff; letter-spacing: -0.02em; }
footer .fb-glyph { width: 32px; height: 32px; border-radius: 9px; background: var(--accent); display: grid; place-items: center; flex: none; }
footer .bottom a { display: inline; margin: 0; color: rgba(255,255,255,.72); }
footer h5 { color: #fff; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 14px; }
footer a { display: block; margin-top: 10px; color: rgba(255,255,255,.72); font-size: 14.5px; }
footer a:hover { color: #fff; }
footer .bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; padding-top: 24px; font-size: 13px; color: rgba(255,255,255,.5); }
.credit em { font-family: var(--serif); font-style: italic; }
.credit a { display: inline; color: rgba(255,255,255,.7); }

/* ---------- reveal motion (foundation layer) ---------- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-d="1"]{ transition-delay: .07s } [data-reveal][data-d="2"]{ transition-delay: .14s } [data-reveal][data-d="3"]{ transition-delay: .21s }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero-grid, .split, .band, .contact { grid-template-columns: 1fr; }
  .svc-grid, .rev-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .hero-card { max-width: 460px; margin-inline: auto; }
  .band { text-align: left; }
}
@media (max-width: 640px) {
  .nav-links, .nav-phone span { display: none; }
  .svc-grid, .rev-grid, .steps { grid-template-columns: 1fr; }
  .cform .row { grid-template-columns: 1fr; }
  footer .cols { grid-template-columns: 1fr; gap: 28px; }
  footer .bottom { flex-direction: column; align-items: flex-start; gap: 6px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
}