/* ============================================================
   WelTherm X-92 Landing Page
   Palette: Graphite #14181f / Steel #1e242e / Ice #eaf4f8
            Turbo Cyan #19b8e6 / Signal Orange #ff5d3a
   Type:    Archivo (display, variable width) + Inter (body)
   ============================================================ */
:root {
  --graphite: #14181f;
  --steel: #1e242e;
  --steel-2: #29313e;
  --ice: #eaf4f8;
  --ice-dim: #a9bcc6;
  --cyan: #f07020;        /* CY-01 product orange */
  --cyan-soft: #ffa050;   /* soft orange highlight */
  --orange: #ff5d3a;
  --orange-dark: #e04322;
  --ok: #2ecc71;
  --radius: 14px;
  --font-display: 'Archivo', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--font-body);
  background: var(--graphite);
  color: var(--ice);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.wrap.narrow { max-width: 640px; }
.center { text-align: center; margin-top: 32px; }
.center-text { text-align: center; color: var(--ice-dim); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.hl { color: var(--cyan); }

h1, h2, h3, .logo { font-family: var(--font-display); }
h1 { font-size: clamp(2rem, 4.6vw, 3.4rem); font-weight: 900; font-stretch: 90%; line-height: 1.08; letter-spacing: -0.5px; }
h1 em { font-style: normal; color: var(--cyan-soft); white-space: nowrap; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 28px; letter-spacing: -0.3px; }
h3 { font-size: 1.05rem; font-weight: 700; }

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-buy {
  background: linear-gradient(135deg, var(--orange), var(--orange-dark));
  color: #fff;
  padding: 16px 34px;
  box-shadow: 0 6px 24px rgba(255, 93, 58, .35);
}
.btn-buy:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(255, 93, 58, .5); }
.btn-buy:active { transform: translateY(0); }
.btn-buy s { opacity: .65; font-weight: 500; margin-left: 6px; }
.btn-sm { padding: 10px 20px; font-size: .9rem; }
.btn-block { width: 100%; padding: 18px; font-size: 1.15rem; }
.btn[disabled] { opacity: .6; cursor: wait; transform: none; }

/* ---------- Topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(20, 24, 31, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--steel-2);
}
.topbar-inner { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { font-size: 1.35rem; font-weight: 900; color: var(--ice); text-decoration: none; letter-spacing: -.5px; }
.logo span { color: var(--cyan); }
.topbar nav { display: flex; gap: 22px; margin-left: auto; }
.topbar nav a { color: var(--ice-dim); text-decoration: none; font-size: .92rem; font-weight: 500; }
.topbar nav a:hover { color: var(--cyan-soft); }
@media (max-width: 700px) { .topbar nav { display: none; } .topbar-inner { justify-content: space-between; } }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(900px 500px at 85% 10%, rgba(240, 112, 32, .16), transparent 60%),
    radial-gradient(600px 400px at 10% 90%, rgba(255, 93, 58, .10), transparent 60%),
    var(--graphite);
  padding: 72px 0 56px;
  overflow: hidden;
}
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
@media (max-width: 880px) { .hero-grid { grid-template-columns: 1fr; } .hero-visual { order: -1; } }

.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: .78rem; font-weight: 700;
  letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(240,112,32,.4);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 20px;
}
.hero-sub { margin: 20px 0 26px; font-size: 1.1rem; color: var(--ice-dim); max-width: 54ch; }
.hero-sub strong { color: var(--ice); }

.price-block { display: flex; align-items: baseline; gap: 14px; margin-bottom: 24px; flex-wrap: wrap; }
.price { font-family: var(--font-display); font-size: 2.6rem; font-weight: 900; color: var(--ice); }
.mrp { font-size: 1.2rem; color: var(--ice-dim); text-decoration: line-through; }
.save {
  background: var(--ok); color: #06280f;
  font-family: var(--font-display); font-weight: 800; font-size: .85rem;
  border-radius: 6px; padding: 4px 10px;
}

.cta-row { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; margin-bottom: 24px; }
.trust-line { font-size: .85rem; color: var(--ice-dim); }

.hero-ticks { list-style: none; display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: .9rem; color: var(--ice-dim); }
.hero-ticks li::first-letter { color: var(--ok); }


/* ---------- Hero product showcase ---------- */
.hero-visual { perspective: 1100px; }
.showcase {
  position: relative;
  width: min(280px, 70vw);
  margin: 0 auto;
  aspect-ratio: 576 / 1000;
  max-height: 460px;
}

/* soft red energy glow behind product */
.glow-core {
  position: absolute; inset: 2% -14% 30% -14%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 45%,
      rgba(240,112,32,.38), rgba(240,112,32,.12) 45%, transparent 70%);
  filter: blur(6px);
  animation: pulse 4.5s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: .85; }
  50%       { transform: scale(1.07); opacity: 1; }
}

/* rotating dashed energy rings */
.orbit-ring {
  position: absolute; inset: 0 -10% 34% -10%;
  border-radius: 50%;
  border: 1.5px dashed rgba(255,122,100,.45);
  animation: ringspin 22s linear infinite;
}
.orbit-ring.ring-2 {
  inset: 6% -2% 40% -2%;
  border-color: rgba(234,244,248,.18);
  border-style: dotted;
  animation: ringspin 34s linear infinite reverse;
}
@keyframes ringspin { to { transform: rotate(360deg); } }

/* the product: slow 3D showcase rotation + gentle float */
.product-tilt {
  position: relative;
  width: 100%; height: 100%;
  transform-style: preserve-3d;
  animation: showcase-turn 7.5s ease-in-out infinite;
  will-change: transform;
}
@keyframes showcase-turn {
  0%   { transform: rotateY(-22deg) rotateX(3deg) translateY(0); }
  25%  { transform: rotateY(0deg)   rotateX(0deg) translateY(-12px); }
  50%  { transform: rotateY(22deg)  rotateX(-3deg) translateY(0); }
  75%  { transform: rotateY(0deg)   rotateX(0deg) translateY(-12px); }
  100% { transform: rotateY(-22deg) rotateX(3deg) translateY(0); }
}
.product-img {
  width: 100%; height: 100%;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 26px 44px rgba(0,0,0,.55))
          drop-shadow(0 0 34px rgba(240,112,32,.22));
}

/* light sweep across the product */
.shine {
  position: absolute; inset: 0;
  background: linear-gradient(105deg,
      transparent 42%, rgba(255,255,255,.16) 50%, transparent 58%);
  mix-blend-mode: screen;
  transform: translateX(-120%);
  animation: shine-sweep 6s ease-in-out infinite;
  pointer-events: none;
}
@keyframes shine-sweep {
  0%, 55%   { transform: translateX(-120%); }
  75%, 100% { transform: translateX(120%); }
}

/* air particles streaming left out of the nozzle */
.air-particles { position: absolute; inset: 0; pointer-events: none; }
.air-particles span {
  position: absolute;
  left: -2%; 
  width: 26px; height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, rgba(234,244,248,0), rgba(234,244,248,.95));
  animation: blast 1.1s linear infinite;
  opacity: 0;
}
.air-particles span:nth-child(1) { top: 10%; animation-delay: 0s; }
.air-particles span:nth-child(2) { top: 13%; animation-delay: .35s; width: 34px; }
.air-particles span:nth-child(3) { top: 16%; animation-delay: .7s; }
.air-particles span:nth-child(4) { top: 19%; animation-delay: .15s; width: 20px; }
.air-particles span:nth-child(5) { top: 8%; animation-delay: .55s; width: 18px; }
.air-particles span:nth-child(6) { top: 22%; animation-delay: .9s; }
.air-particles span:nth-child(7) { top: 12%; animation-delay: 1.05s; width: 30px; }
.air-particles span:nth-child(8) { top: 18%; animation-delay: .45s; }
@keyframes blast {
  0%   { transform: translateX(0) scaleX(.6); opacity: 0; }
  15%  { opacity: .9; }
  100% { transform: translateX(-190px) scaleX(1.6); opacity: 0; }
}

/* grounding shadow that breathes with the float */
.floor-shadow {
  position: absolute;
  bottom: -4%; left: 18%; right: 18%;
  height: 26px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(0,0,0,.55), transparent 70%);
  animation: shadow-breathe 9s ease-in-out infinite;
}
@keyframes shadow-breathe {
  0%, 50%, 100% { transform: scaleX(1); opacity: .8; }
  25%, 75%      { transform: scaleX(.88); opacity: .55; }
}

@media (prefers-reduced-motion: reduce) {
  .product-tilt, .orbit-ring, .glow-core, .shine,
  .air-particles span, .floor-shadow { animation: none !important; }
  .shine { display: none; }
}

/* ---------- Proof strip ---------- */
.proof-strip { background: var(--cyan); color: #fff; font-weight: 600; font-size: .9rem; }
.proof-inner { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; padding: 10px 20px; }

/* ---------- Sections ---------- */
.section { padding: 72px 0; }
.section-alt { background: var(--steel); }

/* Features */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 880px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .feature-grid { grid-template-columns: 1fr; } }
.feature {
  background: var(--steel);
  border: 1px solid var(--steel-2);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: border-color .2s ease, transform .2s ease;
}
.section-alt .feature { background: var(--graphite); }
.feature:hover { border-color: rgba(240,112,32,.5); transform: translateY(-3px); }
.f-ico { font-size: 1.8rem; margin-bottom: 12px; }
.feature h3 { margin-bottom: 8px; color: var(--cyan-soft); }
.feature p { font-size: .92rem; color: var(--ice-dim); }

/* Use cases */
.answer-block {
  background: rgba(240,112,32,.08);
  border-left: 4px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 22px;
  margin-bottom: 28px;
  color: var(--ice-dim);
}
.answer-block strong { color: var(--ice); }
.usecase-row { display: flex; flex-wrap: wrap; gap: 12px; }
.usecase {
  background: var(--graphite);
  border: 1px solid var(--steel-2);
  border-radius: 999px;
  padding: 10px 20px;
  font-weight: 600; font-size: .92rem;
}

/* Spec + comparison tables */
.spec-table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--steel-2); }
.spec-table { width: 100%; border-collapse: collapse; font-size: .95rem; min-width: 520px; }
.spec-table th, .spec-table td { padding: 13px 18px; text-align: left; border-bottom: 1px solid var(--steel-2); }
.spec-table tbody tr:last-child th, .spec-table tbody tr:last-child td { border-bottom: none; }
.spec-table tbody th { color: var(--ice-dim); font-weight: 500; width: 34%; background: rgba(255,255,255,.02); }
.spec-table thead th { font-family: var(--font-display); background: var(--steel-2); }
.compare .win { color: var(--cyan-soft); font-weight: 600; background: rgba(240,112,32,.06); }

/* Reviews */
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 820px) { .review-grid { grid-template-columns: 1fr; } }
.review {
  background: var(--steel);
  border: 1px solid var(--steel-2);
  border-radius: var(--radius);
  padding: 24px;
}
.stars { color: #ffc93c; letter-spacing: 2px; margin-bottom: 10px; }
.review p { font-size: .95rem; }
.review footer { margin-top: 14px; font-size: .82rem; color: var(--ice-dim); }

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--graphite);
  border: 1px solid var(--steel-2);
  border-radius: var(--radius);
  padding: 0 22px;
}
.faq-item summary { cursor: pointer; padding: 18px 0; list-style: none; position: relative; padding-right: 34px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; position: absolute; right: 4px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display); font-size: 1.4rem; color: var(--cyan);
}
.faq-item[open] summary::after { content: '–'; }
.faq-item summary h3 { display: inline; font-size: 1rem; }
.faq-item p { padding: 0 0 20px; color: var(--ice-dim); font-size: .95rem; }

/* ---------- Order form ---------- */
.cta-final {
  background:
    radial-gradient(700px 400px at 50% 0%, rgba(255,93,58,.12), transparent 65%),
    var(--graphite);
}
.order-form {
  background: var(--steel);
  border: 1px solid var(--steel-2);
  border-radius: var(--radius);
  padding: 30px 26px;
  margin-top: 30px;
}
.form-row { margin-bottom: 16px; display: flex; flex-direction: column; gap: 6px; }
.form-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
@media (max-width: 520px) { .form-2col { grid-template-columns: 1fr; } }
.order-form label { font-size: .85rem; font-weight: 600; color: var(--ice-dim); }
.order-form input, .order-form textarea {
  background: var(--graphite);
  border: 1px solid var(--steel-2);
  border-radius: 10px;
  color: var(--ice);
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 12px 14px;
  width: 100%;
}
.order-form input:focus, .order-form textarea:focus {
  outline: none; border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(240,112,32,.2);
}
.pay-note { margin-top: 14px; font-size: .8rem; color: var(--ice-dim); text-align: center; }
.form-error {
  margin-top: 14px; text-align: center;
  color: #ff8a70; background: rgba(255,93,58,.1);
  border: 1px solid rgba(255,93,58,.35);
  border-radius: 10px; padding: 10px 14px; font-size: .9rem;
}

/* ---------- Footer ---------- */
.site-footer { background: #0e1116; border-top: 1px solid var(--steel-2); padding: 48px 0 0; }
.footer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; padding-bottom: 36px; }
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h4 { font-family: var(--font-display); margin-bottom: 10px; color: var(--ice); }
.site-footer p { font-size: .9rem; color: var(--ice-dim); margin-bottom: 6px; }
.site-footer .logo { font-size: 1.3rem; margin-bottom: 8px; }
.footer-bottom { border-top: 1px solid var(--steel-2); padding: 18px 20px; text-align: center; }
.footer-bottom p { font-size: .82rem; color: var(--ice-dim); }

/* ---------- Result page (verify-payment) ---------- */
.result-page { display: flex; min-height: 100vh; align-items: center; justify-content: center; padding: 24px; }
.result-wrap { width: 100%; max-width: 560px; }
.result-card {
  background: var(--steel);
  border: 1px solid var(--steel-2);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
}
.result-card.ok { border-top: 5px solid var(--ok); }
.result-card.fail { border-top: 5px solid var(--orange); }
.result-ico { font-size: 3rem; margin-bottom: 12px; }
.result-card h1 { font-size: 1.8rem; margin-bottom: 12px; }
.result-card p { color: var(--ice-dim); margin-bottom: 12px; }
.result-meta {
  display: grid; grid-template-columns: auto 1fr; gap: 6px 16px;
  background: var(--graphite); border-radius: 10px;
  padding: 16px 20px; margin: 18px 0; text-align: left; font-size: .9rem;
}
.result-meta dt { color: var(--ice-dim); }
.result-meta dd { word-break: break-all; }
.result-card .btn { margin-top: 10px; }

/* ---------- UtilitiKart logo chip ---------- */
.logo-img { display: inline-flex; align-items: center; }
.logo-img img { display: block; width: 170px; height: auto; }
@media (max-width: 480px) { .logo-img img { width: 130px; } }

/* ---------- Product toggle ---------- */
.product-toggle {
  display: flex; justify-content: center; gap: 0;
  margin: 26px auto 0; width: fit-content;
  border: 1px solid var(--steel-2); border-radius: 999px;
  background: var(--steel); padding: 5px;
}
.pt-btn {
  font-family: var(--font-display); font-weight: 700; font-size: .95rem;
  color: var(--ice-dim); text-decoration: none;
  padding: 10px 22px; border-radius: 999px;
  transition: background .15s ease, color .15s ease;
  white-space: nowrap;
}
.pt-btn:hover { color: var(--ice); }
.pt-btn.active { background: var(--cyan); color: #fff; }
@media (max-width: 480px) { .pt-btn { padding: 9px 14px; font-size: .85rem; } }

/* ---------- Padlock page theme (teal-blue accent) ---------- */
.theme-lock {
  --cyan: #1f8fe6;
  --cyan-soft: #6cc0ff;
}
.theme-lock .btn-buy {
  background: linear-gradient(135deg, #1f8fe6, #0f6cc0);
  box-shadow: 0 6px 24px rgba(31, 143, 230, .35);
}
.theme-lock .btn-buy:hover { box-shadow: 0 10px 30px rgba(31, 143, 230, .5); }
.theme-lock .glow-core {
  background: radial-gradient(circle at 50% 45%,
      rgba(31,143,230,.38), rgba(31,143,230,.12) 45%, transparent 70%);
}
.theme-lock .orbit-ring { border-color: rgba(108,192,255,.45); }
.theme-lock .product-img {
  filter: drop-shadow(0 26px 44px rgba(0,0,0,.55))
          drop-shadow(0 0 34px rgba(31,143,230,.25));
}
.theme-lock .answer-block { background: rgba(31,143,230,.08); border-left-color: #1f8fe6; }
.theme-lock .proof-strip { background: #1f8fe6; }
.theme-lock .cta-final {
  background: radial-gradient(700px 400px at 50% 0%, rgba(31,143,230,.14), transparent 65%), var(--graphite);
}

/* Reviews heading inline rating */
.rating-inline { font-size: .95rem; font-weight: 600; color: #ffc93c; margin-left: 12px; letter-spacing: 0; }

/* Footer policy links */
.footer-policy { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 22px; padding: 20px; border-top: 1px solid var(--steel-2); }
.footer-policy a { color: var(--ice-dim); font-size: .85rem; text-decoration: none; }
.footer-policy a:hover { color: var(--cyan-soft); }

/* ---------- Coupon at checkout ---------- */
.coupon-row { display: flex; gap: 8px; margin: 10px 0; }
.coupon-row input { flex: 1; background: var(--graphite); border: 1px solid var(--steel-2); border-radius: 10px; color: var(--ice); padding: 12px 14px; font-size: 1rem; text-transform: uppercase; }
.coupon-btn { background: var(--steel-2); color: var(--ice); border: none; border-radius: 10px; padding: 0 20px; font-weight: 700; cursor: pointer; white-space: nowrap; }
.coupon-btn:hover { background: var(--cyan); color: #fff; }
.coupon-msg { font-size: .9rem; margin: 4px 0 10px; }
.coupon-msg.ok { color: #2ecc71; }
.coupon-msg.err { color: #ff6b5e; }
.price-summary { display: grid; grid-template-columns: 1fr auto; gap: 6px 12px; background: var(--graphite); border: 1px solid var(--steel-2); border-radius: 10px; padding: 12px 16px; margin: 6px 0 12px; font-size: .95rem; color: var(--ice-dim); }
.price-summary .ps-disc { color: #2ecc71; }
.price-summary .ps-total { color: var(--ice); font-weight: 800; font-size: 1.1rem; padding-top: 6px; border-top: 1px solid var(--steel-2); }