/* ─────────────────────────────────────────
   RESET & BASE
───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #1a1a2e;
  color: #ffffff;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body.menu-open { overflow: hidden; position: fixed; width: 100%; }

/* ─────────────────────────────────────────
   DESIGN TOKENS
───────────────────────────────────────── */
:root {
  --navy:        #1a1a2e;
  --navy-deep:   #0a0a15;
  --navy-mid:    #0d0d1a;
  --blue-900:    #0f3460;
  --yellow:      #f5c518;
  --yellow-dark: #d4a800;
  --white:       #ffffff;
  --gray-50:     #f8f8f8;
  --gray-100:    #f0f0f0;
  --gray-200:    #e0e0e0;
  --gray-400:    #94a3b8;
  --gray-600:    #64748b;
  --text-muted:  rgba(255,255,255,0.55);

  --shadow-sm:  0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.20);
  --shadow-md:  0 4px 12px rgba(0,0,0,.10), 0 2px 4px rgba(0,0,0,.08);
  --shadow-lg:  0 12px 28px rgba(0,0,0,.15), 0 4px 10px rgba(0,0,0,.10);
  --shadow-xl:  0 28px 56px rgba(0,0,0,.28);

  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-pill:100px;
}

/* ─────────────────────────────────────────
   SHARED UTILITIES
───────────────────────────────────────── */
.section-label {
  display: block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--yellow);
  margin-bottom: 1rem;
}

/* Base animation state */
.anim {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .65s ease-out, transform .65s ease-out;
}
.anim.visible { opacity: 1; transform: translateY(0); }

/* ─────────────────────────────────────────
   BUTTONS
───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .88rem 1.9rem;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: .97rem;
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease, background .2s;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--yellow);
  color: var(--navy);
  box-shadow: 0 4px 20px rgba(245,197,24,.38);
}
.btn-primary:hover {
  background: #f0ba00;
  box-shadow: 0 8px 30px rgba(245,197,24,.52);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,.3);
}
.btn-ghost:hover { background: rgba(255,255,255,.09); border-color: rgba(255,255,255,.5); }

.cta-duo { display: flex; flex-direction: row; gap: .9rem; flex-wrap: wrap; justify-content: center; align-items: center; }
.cta-duo .btn {
  flex: 1;
  min-width: 140px;
  padding: .85rem 1.4rem;
  font-size: .97rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  white-space: nowrap;
}
.cta-duo .btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-whatsapp {
  background: #25D366; color: #fff;
  box-shadow: 0 4px 20px rgba(37,211,102,.35);
  display: inline-flex; align-items: center; gap: .5rem;
}
.btn-whatsapp:hover { background: #1ebe57; box-shadow: 0 8px 30px rgba(37,211,102,.5); }
.btn-whatsapp svg { width: 18px; height: 18px; fill: currentColor; }

.cta-duo-label {
  display: block;
  text-align: center;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--gray-600);
  margin-bottom: .9rem;
  width: 100%;
}
.btn-primary svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ─────────────────────────────────────────
   NAVIGATION
───────────────────────────────────────── */
#navbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.6rem 3rem;
  transition: padding .3s ease, background .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
}

#navbar.scrolled {
  padding: .95rem 3rem;
  background: rgba(10,10,21,.92);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border-bottom-color: rgba(245,197,24,.15);
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -.03em;
  color: #fff;
  text-decoration: none;
}
.nav-logo span { color: var(--yellow); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.4rem;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,.75);
  text-decoration: none;
  font-size: .88rem;
  font-weight: 500;
  letter-spacing: .02em;
  transition: color .2s;
}
.nav-links a:hover { color: var(--yellow); }

.nav-cta {
  background: var(--yellow) !important;
  color: var(--navy) !important;
  padding: .55rem 1.35rem;
  border-radius: var(--radius-pill);
  font-weight: 700 !important;
}
.nav-cta:hover { background: #f0ba00 !important; }

/* Hamburger (mobile) */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: .3s;
}

/* ─────────────────────────────────────────
   SECTION 1 · HERO
───────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Layered background */
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 15% 85%, rgba(30,64,175,.45) 0%, transparent 70%),
    radial-gradient(ellipse 55% 40% at 85% 92%, rgba(59,130,246,.28) 0%, transparent 60%),
    radial-gradient(ellipse 80% 60% at 50% 100%, rgba(37,99,235,.42) 0%, transparent 75%),
    linear-gradient(175deg, #1a1a2e 0%, #0e1628 55%, #080d1a 100%);
  animation: heroBgShift 10s ease-in-out infinite alternate;
}

@keyframes heroBgShift {
  from { filter: hue-rotate(0deg) brightness(1); }
  to   { filter: hue-rotate(8deg)  brightness(1.06); }
}

/* Fine grid texture */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245,197,24,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,197,24,.025) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

/* Animated water at the bottom */
.hero-water {
  position: absolute;
  bottom: 0;
  left: -10%;
  width: 120%;
  height: 220px;
  pointer-events: none;
}
.hw { position: absolute; bottom: 0; left: 0; right: 0; height: 100%; }
.hw1 {
  background: radial-gradient(ellipse 110% 70px at 50% 100%, rgba(59,130,246,.28), transparent);
  animation: wave1 7s ease-in-out infinite;
}
.hw2 {
  background: radial-gradient(ellipse 80% 55px at 30% 100%, rgba(37,99,235,.22), transparent);
  animation: wave2 9s ease-in-out infinite;
}
.hw3 {
  background: radial-gradient(ellipse 130% 85px at 65% 100%, rgba(96,165,250,.16), transparent);
  animation: wave3 11s ease-in-out infinite;
}
@keyframes wave1 { 0%,100%{transform:translateX(0)scaleY(1)} 50%{transform:translateX(-4%)scaleY(1.18)} }
@keyframes wave2 { 0%,100%{transform:translateX(4%)scaleY(1)} 50%{transform:translateX(-2%)scaleY(.88)} }
@keyframes wave3 { 0%,100%{transform:translateX(-2%)scaleY(.94)} 50%{transform:translateX(3%)scaleY(1.14)} }

/* Vignette */
.hero-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 100% 100% at 50% 50%, transparent 40%, rgba(0,0,0,.35) 100%);
  pointer-events: none;
}

/* Hero content */
.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 920px;
  padding: 0 2rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  background: rgba(245,197,24,.12);
  border: 1px solid rgba(245,197,24,.3);
  padding: .42rem 1.1rem;
  border-radius: var(--radius-pill);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--yellow);
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp .8s ease-out .2s forwards;
}
.hero-badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--yellow);
  animation: blip 2.2s ease-in-out infinite;
}
@keyframes blip { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.45;transform:scale(.75)} }

.hero-title {
  font-size: clamp(2.6rem, 6.5vw, 5.2rem);
  font-weight: 900;
  line-height: 1.03;
  letter-spacing: -.035em;
  color: #fff;
  opacity: 0;
  animation: fadeUp .85s ease-out .38s forwards;
  margin-bottom: 1.5rem;
}
.hero-title .hl { color: var(--yellow); }

.hero-sub {
  font-size: clamp(1rem, 1.9vw, 1.2rem);
  font-weight: 400;
  line-height: 1.65;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 2.8rem;
  opacity: 0;
  animation: fadeUp .85s ease-out .56s forwards;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp .85s ease-out .72s forwards;
}

/* Stats bar */
.hero-stats {
  position: absolute;
  bottom: 5.5rem;
  left: 0; right: 0;
  display: flex;
  justify-content: center;
  gap: 4rem;
  z-index: 10;
  opacity: 0;
  animation: fadeUp .85s ease-out .9s forwards;
}
.hero-stat-val {
  font-size: 2rem;
  font-weight: 900;
  color: var(--yellow);
  letter-spacing: -.04em;
}
.hero-stat-lbl {
  font-size: .72rem;
  color: rgba(255,255,255,.45);
  margin-top: .2rem;
  letter-spacing: .04em;
  display: flex;
  justify-content: center;
}

/* Scroll indicator */
.scroll-cue {
  position: absolute;
  bottom: 2.2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .45rem;
  cursor: pointer;
  z-index: 10;
  opacity: 0;
  animation: fadeUp .85s ease-out 1.1s forwards;
}
.scroll-cue-lbl {
  font-size: .66rem;
  letter-spacing: .14em;
  color: rgba(255,255,255,.35);
  text-transform: uppercase;
}
.scroll-cue-arrow {
  width: 28px; height: 28px;
  border-right: 2px solid rgba(255,255,255,.35);
  border-bottom: 2px solid rgba(255,255,255,.35);
  transform: rotate(45deg);
  animation: bounce 2.1s ease-in-out infinite;
}
@keyframes bounce {
  0%,100%{transform:rotate(45deg) translate(0,0);opacity:.35}
  50%{transform:rotate(45deg) translate(5px,5px);opacity:.75}
}

@keyframes fadeUp {
  from { opacity:0; transform:translateY(28px); }
  to   { opacity:1; transform:translateY(0); }
}

/* ─────────────────────────────────────────
   SECTION 2 · PRODUCT REVEAL
───────────────────────────────────────── */
#product {
  min-height: 200vh;
  background: var(--navy-mid);
  position: relative;
}

.product-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  overflow: hidden;
}

/* Water / atmosphere overlay */
#waterRise {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(30,64,175,0) 0%, transparent 100%);
  pointer-events: none;
  z-index: 0;
  transition: background .3s linear;
}

.product-header {
  position: relative;
  z-index: 10;
  text-align: center;
}
.product-header h2 {
  font-size: clamp(1.7rem, 3.8vw, 2.8rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -.03em;
}

/* House/barrier scene wrapper */
.barrier-scene {
  position: relative;
  z-index: 10;
  width: min(800px, 96vw);
  display: flex;
  align-items: center;
  justify-content: center;
}

#barrierSvgWrap {
  width: 100%;
  filter: drop-shadow(0 24px 56px rgba(0,0,0,.7));
}

/* Side progress dots */
.asm-dots {
  position: absolute;
  right: -3.2rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.asm-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: rgba(255,255,255,.18);
  transition: background .35s ease, box-shadow .35s ease;
}
.asm-dot.lit {
  background: var(--yellow);
  box-shadow: 0 0 8px rgba(245,197,24,.65);
}

/* ─────────────────────────────────────────
   SECTION 3 · BENEFITS
───────────────────────────────────────── */
#benefits {
  background: var(--gray-50);
  padding: 9rem 2rem;
}

.benefits-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-head {
  text-align: center;
  margin-bottom: 5rem;
}
.section-head h2 {
  font-size: clamp(1.9rem, 4vw, 3.4rem);
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -.03em;
  margin-bottom: .9rem;
}
.section-head p {
  font-size: 1.05rem;
  color: var(--gray-600);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.65;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.4rem;
}

.b-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.1rem;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  opacity: 0;
  transform: translateY(40px);
}
.b-card.visible {
  opacity: 1;
  transform: translateY(0);
}
.b-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(245,197,24,.3);
}

.b-icon { font-size: 2.4rem; display: block; margin-bottom: 1.1rem; }
.b-title { font-size: 1.05rem; font-weight: 700; color: var(--navy); margin-bottom: .5rem; }
.b-desc  { font-size: .88rem; color: var(--gray-600); line-height: 1.65; }

/* ─────────────────────────────────────────
   SECTION 4 · HOW TO MEASURE
───────────────────────────────────────── */
#measure {
  background: var(--navy);
  padding: 9rem 2rem;
}

.measure-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.measure-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 5.5rem;
}

.m-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .6s ease, transform .6s ease;
}
.m-card.visible { opacity: 1; transform: translateY(0); }

.m-card-title    { font-size: 1.45rem; font-weight: 700; color: #fff; margin-bottom: .35rem; }
.m-card-subtitle { font-size: .85rem; color: var(--yellow); font-weight: 500; margin-bottom: 1.6rem; }
.m-diagram       { width: 100%; max-width: 300px; display: block; margin: 0 auto; }
.m-card-note     { font-size: .87rem; color: rgba(255,255,255,.58); line-height: 1.65; margin-top: 0.2rem; }
.m-card-note2    { font-size: .87rem; color: rgba(255,255,255,.58); line-height: 1.65; margin-top: .4rem; font-weight: bold; }

/* Steps */
.steps-wrap { max-width: 700px; margin: 0 auto; }
.steps-title {
  font-size: 1.45rem;
  font-weight: 700;
  color: #fff;
  text-align: center;
  margin-bottom: 2rem;
}

.step {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 1.45rem 0;
  border-bottom: 1px solid rgba(255,255,255,.07);
  opacity: 0;
  transform: translateX(-22px);
  transition: opacity .5s ease, transform .5s ease;
}
.step.visible { opacity: 1; transform: translateX(0); }

.step-num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--yellow);
  color: var(--navy);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: .88rem;
  flex-shrink: 0;
}
.step-text h4 { font-size: .98rem; font-weight: 700; color: #fff; margin-bottom: .28rem; }
.step-text p  { font-size: .87rem; color: rgba(255,255,255,.58); line-height: 1.6; }

/* ─────────────────────────────────────────
   SECTION 5 · CALCULATOR
───────────────────────────────────────── */
#calculator {
  background: var(--gray-50);
  padding: 9rem 2rem;
}

.calc-inner {
  max-width: 580px;
  margin: 0 auto;
}

.calc-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 3rem 3rem 2.5rem;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--gray-200);
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .6s ease, transform .6s ease;
}
.calc-card.visible { opacity: 1; transform: translateY(0); }

.calc-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
  margin-bottom: 2rem;
}

.inp-group { display: flex; flex-direction: column; gap: .45rem; }

.inp-group label {
  font-size: .8rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: .04em;
  text-transform: uppercase;
}

.inp-wrap { position: relative; }
.inp-wrap::after {
  content: 'cm';
  position: absolute;
  right: 1rem; top: 50%;
  transform: translateY(-50%);
  font-size: .82rem; font-weight: 600;
  color: var(--gray-400);
  pointer-events: none;
}

.inp-wrap input {
  width: 100%;
  padding: .85rem 2.8rem .85rem 1rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 1.1rem; font-weight: 600;
  font-family: inherit;
  color: var(--navy);
  background: var(--gray-50);
  transition: border-color .2s, background .2s;
  outline: none;
  -moz-appearance: textfield;
}
.inp-wrap input::-webkit-outer-spin-button,
.inp-wrap input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.inp-wrap input:focus { border-color: var(--navy); background: #fff; }
.inp-wrap input.err  { border-color: #ef4444; }

.inp-error {
  font-size: .73rem;
  color: #ef4444;
  font-weight: 500;
  min-height: 17px;
}

/* Result panel */
.calc-result {
  background: var(--navy);
  border-radius: var(--radius-md);
  padding: 1.8rem 2rem;
  margin-bottom: 1.6rem;
}

.res-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .6rem 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.res-row:last-of-type { border-bottom: none; }

.res-lbl { font-size: .82rem; color: rgba(255,255,255,.55); font-weight: 500; }
.res-val { font-size: .95rem; color: #fff; font-weight: 700; }

.price-block { text-align: center; padding: 1.2rem 0 .4rem; }
.price-lbl   { font-size: .7rem; color: rgba(255,255,255,.4); letter-spacing: .1em; text-transform: uppercase; margin-bottom: .3rem; }
.price-amt   {
  font-size: 3rem; font-weight: 900;
  color: var(--yellow);
  letter-spacing: -.04em;
  transition: all .3s ease;
}

.calc-note {
  font-size: .76rem;
  color: var(--gray-400);
  line-height: 1.55;
  text-align: center;
  margin-bottom: 2rem;
}
.calc-cta { display: flex; flex-direction: column; align-items: center; width: 100%; }

/* ─────────────────────────────────────────
   SECTION 6 · FOOTER
───────────────────────────────────────── */
#footer {
  background: var(--navy-deep);
  padding: 6rem 2rem 3rem;
}

.footer-inner { max-width: 1100px; margin: 0 auto; }

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
  margin-bottom: 2.8rem;
}

.footer-logo { font-size: 1.7rem; font-weight: 900; letter-spacing: -.03em; color: #fff; margin-bottom: 1rem; }
.footer-logo span { color: var(--yellow); }
.footer-brand p { font-size: .87rem; color: rgba(255,255,255,.45); line-height: 1.7; max-width: 270px; }

.footer-col h4 {
  font-size: .73rem; font-weight: 700;
  color: rgba(255,255,255,.28);
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 1.4rem;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: .75rem; }
.footer-col a  { color: rgba(255,255,255,.55); text-decoration: none; font-size: .88rem; transition: color .2s; }
.footer-col a:hover { color: var(--yellow); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-tagline { font-size: 1.15rem; font-weight: 600; color: rgba(255,255,255,.35); letter-spacing: -.01em; }
.footer-tagline em { color: var(--yellow); font-style: normal; }
.footer-copy { font-size: .77rem; color: rgba(255,255,255,.25); }

/* ─────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────── */
@media (max-width: 768px) {
  #navbar { padding: 1.3rem 1.5rem; }
  #navbar.scrolled { padding: .85rem 1.5rem; }

  .nav-links { display: none; }
  .nav-burger { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: rgba(10,10,21,.97);
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    z-index: 9999;
    height: 100vh;
    overflow-y: auto;
  }
  .nav-links.open a { font-size: 1.3rem; }

  .hero-stats { gap: 2rem; }
  .hero-stat-val { font-size: 1.6rem; }

  .measure-cards { grid-template-columns: 1fr; }
  .calc-inputs   { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-brand { grid-column: 1 / -1; }

  .asm-dots { display: none; }

  .calc-card { padding: 2rem 1.5rem 1.8rem; }

  .hero-title { font-size: clamp(1.8rem, 8vw, 2.6rem); line-height: 1.1; margin-bottom: 1rem; }
  .hero-sub { font-size: .92rem; margin-bottom: 2rem; }
  .hero-badge { font-size: .7rem; margin-bottom: 1.2rem; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .hero-ctas .btn { width: 100%; max-width: 280px; justify-content: center; }
  .hero-content { padding: 0 1.25rem; padding-top: 5rem; }

  .hero-stats { bottom: 4rem; gap: 1.5rem; padding: 0 1rem; flex-wrap: wrap; justify-content: center; }
  .hero-stat-val { font-size: 1.4rem; }
  .hero-stat-lbl { font-size: .65rem; }
  .scroll-cue { bottom: 1.2rem; left: auto;}


  .price-amt { font-size: 2.2rem; }
  .calc-card { padding: 1.5rem 1.25rem; }
  .calc-result { padding: 1.4rem 1.25rem; }
  .res-lbl { font-size: .78rem; }
  .res-val { font-size: .88rem; }
  .barrier-row-fields { flex-direction: column; gap: .75rem; }
  .barrier-row-fields .inp-group { width: 100%; }
  .remove-btn { align-self: flex-end !important; }


  .product-header h2 { font-size: 1.4rem; padding: 0 1rem; }
  .barrier-scene { width: 100vw; }
  #product { min-height: 250vh; }
}

@media (max-width: 480px) {
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero-content { padding: 0 1.25rem; padding-top: 1.5rem; }

  .price-amt { font-size: 1.85rem; letter-spacing: -.02em; }
  .hero-title { font-size: clamp(1.5rem, 7.5vw, 1.9rem); }
  .hero-stats {
    position: relative;
    bottom: auto;
    margin-top: 2rem;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero-stat-val { font-size: 1.2rem; }
  .scroll-cue { bottom: 1.2 rem; left: auto; }
  #hero { justify-content: center; padding-top: 0.5rem; }

  #calculator { padding: 5rem 1rem; }
  #benefits { padding: 5rem 1rem; }
  #measure { padding: 5rem 1rem; }
  .section-head { margin-bottom: 3rem; }
  .section-head h2 { font-size: clamp(1.5rem, 7vw, 2rem); }

  .footer-tagline { font-size: .95rem; }
  #footer { padding: 4rem 1.25rem 2.5rem; }
  .footer-top { gap: 1.5rem; }

  #housePhoto {
  background-image: url('src/images/casa_mobile.jpeg') !important;
  background-position: center center !important;
}
  .cta-duo { flex-direction: row; flex-wrap: nowrap; }
  .cta-duo .btn { flex: 1; padding: .75rem 1.6rem; font-size: .88rem; min-width: 0; }
}