:root {
  --primary-red: #d92525;
  --primary-dark: #252525;
  --orange: #f58220;
  --yellow: #ffc928;
  --green: #4caf50;
  --blue: #2d9cdb;
  --purple: #8e44ad;
  --light-bg: #f8f7f4;
  --white: #ffffff;
  --gray-text: #555555;
  --border: rgba(37, 37, 37, 0.12);
  --shadow: 0 18px 45px rgba(37, 37, 37, 0.12);
  --shadow-soft: 0 12px 28px rgba(37, 37, 37, 0.08);
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 34px;
  --header-height: 82px;
  --container: 1180px;
  --transition: 220ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--primary-dark);
  background: var(--light-bg);
  line-height: 1.6;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.section {
  padding: 78px 0;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 38px;
  text-align: center;
}

.section-heading h2,
.about-content h2,
.calculator-content h2,
.location-card h2,
.contact-content h2,
.brands-box h2 {
  margin: 0 0 14px;
  font-family: "Poppins", sans-serif;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.section-heading p,
.about-content p,
.calculator-content p,
.contact-content p,
.brands-box p {
  margin: 0;
  color: var(--gray-text);
  font-size: 1.04rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--primary-red);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary-red), var(--orange), var(--yellow));
}

.center {
  display: flex;
  justify-content: center;
  margin-top: 34px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 9999;
  transform: translateY(-140%);
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--primary-dark);
  color: var(--white);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

.top-bar {
  background: var(--primary-dark);
  color: var(--white);
  font-size: 0.9rem;
}

.top-bar__inner {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.top-bar p {
  margin: 0;
  font-weight: 700;
}

.top-bar__links {
  display: flex;
  align-items: center;
  gap: 16px;
  color: rgba(255, 255, 255, 0.88);
}

.top-bar__links a {
  transition: color var(--transition);
}

.top-bar__links a:hover {
  color: var(--yellow);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(14px);
  transition: box-shadow var(--transition), transform var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 12px 28px rgba(37, 37, 37, 0.1);
}

.header__inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.logo {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.logo img {
  width: 148px;
  max-height: 62px;
  object-fit: contain;
  border-radius: 12px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--primary-dark);
  font-size: 0.95rem;
  font-weight: 700;
}

.main-nav a {
  position: relative;
  padding: 28px 0;
  transition: color var(--transition);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 22px;
  width: 0;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary-red), var(--orange));
  transition: width var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary-red);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hamburger {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--white);
}

.hamburger span {
  display: block;
  width: 21px;
  height: 2px;
  margin: 5px auto;
  border-radius: 999px;
  background: var(--primary-dark);
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 13px 22px;
  border: 0;
  border-radius: 999px;
  font-weight: 800;
  line-height: 1;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}

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

.btn--small {
  min-height: 42px;
  padding: 11px 17px;
  font-size: 0.92rem;
}

.btn--orange {
  color: var(--white);
  background: linear-gradient(135deg, var(--orange), var(--primary-red));
  box-shadow: 0 12px 24px rgba(245, 130, 32, 0.26);
}

.btn--red {
  color: var(--white);
  background: linear-gradient(135deg, var(--primary-red), #b91818);
  box-shadow: 0 12px 24px rgba(217, 37, 37, 0.24);
}

.btn--outline {
  color: var(--primary-dark);
  background: var(--white);
  border: 1px solid var(--border);
}

.btn--outline:hover {
  box-shadow: var(--shadow-soft);
}

.btn--ghost {
  color: var(--primary-red);
  background: rgba(217, 37, 37, 0.08);
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(100vh - 124px);
  display: flex;
  align-items: center;
  background:
    radial-gradient(circle at 10% 15%, rgba(255, 201, 40, 0.28), transparent 28%),
    radial-gradient(circle at 80% 20%, rgba(45, 156, 219, 0.24), transparent 28%),
    linear-gradient(135deg, #fff 0%, #fff7ef 48%, #f6fbff 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: auto -120px -220px auto;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: conic-gradient(
    from 120deg,
    var(--primary-red),
    var(--orange),
    var(--yellow),
    var(--green),
    var(--blue),
    var(--purple),
    var(--primary-red)
  );
  opacity: 0.12;
  filter: blur(3px);
}

.hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.96fr);
  align-items: center;
  gap: 54px;
}

.hero h1 {
  max-width: 760px;
  margin: 0 0 18px;
  font-family: "Poppins", sans-serif;
  font-size: clamp(2.55rem, 6vw, 5.5rem);
  line-height: 0.98;
  letter-spacing: -0.07em;
}

.hero p {
  max-width: 640px;
  margin: 0 0 28px;
  color: var(--gray-text);
  font-size: clamp(1.03rem, 2.1vw, 1.24rem);
}

.hero__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero__badges span {
  padding: 9px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  color: var(--primary-dark);
  font-size: 0.88rem;
  font-weight: 800;
}

.hero__visual {
  position: relative;
  min-height: 500px;
}

.paint-card {
  overflow: hidden;
  border: 12px solid var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.paint-card img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.paint-splash {
  position: absolute;
  border-radius: 999px;
  filter: blur(0.2px);
  box-shadow: var(--shadow-soft);
}

.paint-splash--red {
  width: 96px;
  height: 96px;
  left: -22px;
  top: 54px;
  background: var(--primary-red);
}

.paint-splash--blue {
  width: 76px;
  height: 76px;
  right: -16px;
  top: 20%;
  background: var(--blue);
}

.paint-splash--yellow {
  width: 116px;
  height: 116px;
  right: 28px;
  bottom: -18px;
  background: var(--yellow);
}

.floating-note {
  position: absolute;
  left: -18px;
  bottom: 42px;
  max-width: 260px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-soft);
}

.floating-note strong,
.floating-note span {
  display: block;
}

.floating-note span {
  margin-top: 5px;
  color: var(--gray-text);
  font-size: 0.92rem;
}

.color-section {
  background: var(--white);
}

.color-arc {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  max-width: 680px;
  height: 96px;
  margin: 0 auto 34px;
  overflow: hidden;
  border-radius: 999px 999px 12px 12px;
}

.color-arc span {
  background: var(--arc-color);
}

.color-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.color-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}

.color-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.color-card h3 {
  margin: 14px 0 8px;
  font-family: "Poppins", sans-serif;
}

.color-card p {
  margin: 0;
  color: var(--gray-text);
}

.color-dot {
  display: inline-block;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  box-shadow: inset 0 0 0 5px rgba(255, 255, 255, 0.55);
}

.color-dot.neutral {
  background: linear-gradient(135deg, #efe8dc, #8d7f72);
}

.color-dot.warm {
  background: linear-gradient(135deg, var(--yellow), var(--orange), var(--primary-red));
}

.color-dot.cold {
  background: linear-gradient(135deg, var(--green), var(--blue), var(--purple));
}

.color-dot.facade {
  background: linear-gradient(135deg, #f5d7b0, #b45b39);
}

.color-dot.wood {
  background: linear-gradient(135deg, #d79a51, #6b3d1f);
}

.color-dot.detail {
  background: conic-gradient(var(--primary-red), var(--orange), var(--yellow), var(--green), var(--blue), var(--purple), var(--primary-red));
}

.inspiration-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.image-card {
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}

.image-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.image-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.image-card div {
  padding: 20px;
}

.image-card h3 {
  margin: 0 0 8px;
  font-family: "Poppins", sans-serif;
}

.image-card p {
  margin: 0;
  color: var(--gray-text);
}

.about-section {
  background:
    linear-gradient(135deg, rgba(217, 37, 37, 0.94), rgba(142, 68, 173, 0.88)),
    url("https://images.unsplash.com/photo-1589939705384-5185137a7f0f?auto=format&fit=crop&w=1400&q=80") center/cover;
  color: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 38px;
}

.about-content p {
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 24px;
}

.about-section .eyebrow {
  color: var(--yellow);
}

.about-section .eyebrow::before {
  background: var(--yellow);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.stats-grid article {
  min-height: 150px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.13);
  backdrop-filter: blur(8px);
}

.stats-grid strong,
.stats-grid span {
  display: block;
}

.stats-grid strong {
  margin-bottom: 8px;
  font-family: "Poppins", sans-serif;
  font-size: 2rem;
  line-height: 1;
}

.stats-grid span {
  color: rgba(255, 255, 255, 0.84);
  font-weight: 700;
}

.products-section {
  background: var(--white);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.product-card {
  position: relative;
  overflow: hidden;
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #fff, #fffaf5);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}

.product-card::after {
  content: "";
  position: absolute;
  inset: auto -30px -40px auto;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(245, 130, 32, 0.12);
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.product-icon {
  display: inline-grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border-radius: 17px;
  background: rgba(217, 37, 37, 0.08);
  font-size: 1.7rem;
}

.product-card h3 {
  margin: 18px 0 8px;
  font-family: "Poppins", sans-serif;
}

.product-card p {
  margin: 0;
  color: var(--gray-text);
}

.product-card--wide {
  grid-column: span 3;
}

.solutions-section {
  background:
    radial-gradient(circle at 0 0, rgba(255, 201, 40, 0.22), transparent 28%),
    radial-gradient(circle at 100% 10%, rgba(45, 156, 219, 0.2), transparent 28%),
    var(--light-bg);
}

.solution-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 22px;
  align-items: stretch;
}

.solution-tabs {
  display: grid;
  gap: 12px;
}

.solution-tab {
  width: 100%;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--white);
  color: var(--primary-dark);
  font-weight: 800;
  text-align: left;
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.solution-tab:hover,
.solution-tab.active {
  transform: translateX(4px);
  color: var(--white);
  background: linear-gradient(135deg, var(--primary-red), var(--orange));
  box-shadow: var(--shadow-soft);
}

.solution-panel {
  min-height: 100%;
  padding: 34px;
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow);
}

.solution-panel__tag {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--primary-red);
  background: rgba(217, 37, 37, 0.08);
  font-weight: 800;
  font-size: 0.86rem;
}

.solution-panel h3 {
  margin: 0 0 12px;
  font-family: "Poppins", sans-serif;
  font-size: clamp(1.7rem, 3vw, 2.45rem);
  line-height: 1.12;
}

.solution-panel p {
  margin: 0 0 24px;
  color: var(--gray-text);
  font-size: 1.04rem;
}

.brands-section {
  background: var(--white);
}

.brands-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  align-items: center;
  padding: 34px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(245, 130, 32, 0.12), rgba(217, 37, 37, 0.08)),
    var(--light-bg);
}

.brand-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.brand-tags span {
  padding: 12px 15px;
  border-radius: 999px;
  color: var(--primary-dark);
  background: var(--white);
  box-shadow: var(--shadow-soft);
  font-weight: 800;
}

.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.tip-card {
  display: flex;
  gap: 16px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.tip-card span {
  flex: 0 0 auto;
  display: inline-grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 15px;
  color: var(--white);
  background: var(--primary-red);
  font-weight: 900;
}

.tip-card p {
  margin: 0;
  color: var(--gray-text);
  font-weight: 600;
}

.calculator-section {
  background: var(--white);
}

.calculator-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 34px;
  align-items: center;
}

.note {
  margin-top: 18px !important;
  padding: 16px;
  border-left: 4px solid var(--orange);
  border-radius: 14px;
  background: rgba(245, 130, 32, 0.08);
}

.calculator-card,
.contact-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow);
}

.calculator-card label,
.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--primary-dark);
  font-weight: 800;
}

.calculator-card input,
.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  min-height: 50px;
  padding: 13px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  color: var(--primary-dark);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.contact-form textarea {
  resize: vertical;
  min-height: 130px;
}

.calculator-card input:focus,
.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(245, 130, 32, 0.14);
}

.calculator-result {
  display: block;
  padding: 16px;
  border-radius: 16px;
  background: var(--light-bg);
  color: var(--primary-dark);
  font-weight: 800;
}

.location-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 24px;
  align-items: stretch;
}

.location-card {
  padding: 32px;
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.location-card address {
  margin: 0 0 18px;
  color: var(--gray-text);
  font-style: normal;
  font-weight: 700;
}

.contact-list {
  display: grid;
  gap: 8px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  color: var(--gray-text);
}

.contact-list a {
  color: var(--primary-red);
  font-weight: 800;
}

.location-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.map-card {
  overflow: hidden;
  min-height: 430px;
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.map-card iframe {
  width: 100%;
  height: 100%;
  min-height: 430px;
  border: 0;
}

.contact-section {
  background:
    linear-gradient(135deg, rgba(37, 37, 37, 0.9), rgba(37, 37, 37, 0.76)),
    url("https://images.unsplash.com/photo-1595428774223-ef52624120d2?auto=format&fit=crop&w=1400&q=80") center/cover;
  color: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 34px;
  align-items: center;
}

.contact-content p {
  color: rgba(255, 255, 255, 0.84);
}

.contact-section .eyebrow {
  color: var(--yellow);
}

.contact-section .eyebrow::before {
  background: var(--yellow);
}

.contact-highlight {
  display: grid;
  gap: 4px;
  margin: 24px 0;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.1);
}

.contact-highlight strong {
  color: var(--white);
}

.contact-highlight span {
  color: rgba(255, 255, 255, 0.8);
}

.contact-form {
  color: var(--primary-dark);
}

.form-feedback {
  min-height: 24px;
  margin: 0;
  color: var(--primary-red);
  font-weight: 800;
}

.form-feedback.success {
  color: var(--green);
}

.faq-section {
  background: var(--white);
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-list details {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.faq-list summary {
  padding: 19px 22px;
  font-weight: 900;
  cursor: pointer;
}

.faq-list p {
  margin: 0;
  padding: 0 22px 22px;
  color: var(--gray-text);
}

.site-footer {
  color: var(--white);
  background: var(--primary-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr 0.9fr 1.15fr;
  gap: 32px;
  padding: 58px 0;
}

.footer-brand img {
  width: 170px;
  max-height: 76px;
  object-fit: contain;
  margin-bottom: 16px;
  border-radius: 14px;
  background: var(--white);
}

.footer-grid h3 {
  margin: 0 0 16px;
  font-family: "Poppins", sans-serif;
}

.footer-grid p,
.footer-grid a {
  display: block;
  margin: 0 0 10px;
  color: rgba(255, 255, 255, 0.75);
}

.footer-grid a:hover {
  color: var(--yellow);
}

.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.footer-social a {
  margin: 0;
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.09);
}

.footer-bottom {
  padding: 18px 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
}

.footer-bottom p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.floating-contact {
  position: fixed;
  right: 18px;
  bottom: 88px;
  z-index: 980;
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: linear-gradient(135deg, var(--green), #238d3e);
  box-shadow: 0 14px 28px rgba(76, 175, 80, 0.32);
  font-size: 1.4rem;
}

.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 22px;
  z-index: 980;
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 0;
  border-radius: 50%;
  color: var(--white);
  background: var(--primary-red);
  box-shadow: 0 14px 28px rgba(217, 37, 37, 0.28);
  font-size: 1.4rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 650ms ease, transform 650ms ease;
}

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

.calc-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 14%, rgba(255, 201, 40, 0.28), transparent 28%),
    radial-gradient(circle at 86% 12%, rgba(45, 156, 219, 0.22), transparent 30%),
    linear-gradient(135deg, #ffffff 0%, #fff7ed 52%, #f5fbff 100%);
}

.calc-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 48px;
  align-items: center;
}

.calc-hero__content h1 {
  max-width: 760px;
  margin: 0 0 18px;
  font-family: "Poppins", sans-serif;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

.calc-hero__content p {
  max-width: 680px;
  margin: 0 0 28px;
  color: var(--gray-text);
  font-size: 1.1rem;
}

.calc-hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.calc-hero__badges span {
  padding: 9px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  font-weight: 800;
  font-size: 0.88rem;
}

.calc-hero__card {
  position: relative;
  overflow: hidden;
  border: 12px solid var(--white);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: var(--shadow);
}

.calc-hero__card img {
  width: 100%;
  height: 470px;
  object-fit: cover;
}

.calc-hero__note {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 20px;
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-soft);
}

.calc-hero__note strong,
.calc-hero__note span {
  display: block;
}

.calc-hero__note span {
  margin-top: 5px;
  color: var(--gray-text);
  font-size: 0.94rem;
}

.official-embed-section {
  background: var(--white);
}

.official-calculator-shell {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: var(--shadow);
}

.official-calculator-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(135deg, rgba(245, 130, 32, 0.12), rgba(217, 37, 37, 0.08)),
    var(--white);
}

.official-calculator-toolbar strong,
.official-calculator-toolbar span {
  display: block;
}

.official-calculator-toolbar span {
  margin-top: 3px;
  color: var(--gray-text);
  font-size: 0.92rem;
}

.official-calculator-frame {
  display: block;
  width: 100%;
  height: 760px;
  border: 0;
  background: var(--light-bg);
}

.embed-fallback-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin-top: 22px;
  padding: 24px;
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(217, 37, 37, 0.08), rgba(245, 130, 32, 0.1)),
    var(--light-bg);
}

.embed-fallback-card h3 {
  margin: 0 0 6px;
  font-family: "Poppins", sans-serif;
}

.embed-fallback-card p {
  max-width: 720px;
  margin: 0;
  color: var(--gray-text);
}

.estimate-section {
  background:
    radial-gradient(circle at 0 0, rgba(255, 201, 40, 0.2), transparent 28%),
    radial-gradient(circle at 100% 0, rgba(45, 156, 219, 0.16), transparent 28%),
    var(--light-bg);
}

.estimator-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 24px;
  align-items: start;
}

.preset-box,
.advanced-calc-card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.preset-box h3 {
  margin: 0 0 8px;
  font-family: "Poppins", sans-serif;
  font-size: 1.45rem;
}

.preset-box p {
  margin: 0 0 20px;
  color: var(--gray-text);
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.suvinil-size-card {
  min-height: 118px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: linear-gradient(180deg, #ffffff, #fff8ef);
  color: var(--primary-dark);
  text-align: left;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.suvinil-size-card:hover,
.suvinil-size-card.active {
  transform: translateY(-4px);
  border-color: rgba(217, 37, 37, 0.4);
  box-shadow: var(--shadow-soft);
}

.suvinil-size-card strong,
.suvinil-size-card span {
  display: block;
}

.suvinil-size-card strong {
  margin-bottom: 6px;
  color: var(--primary-red);
  font-family: "Poppins", sans-serif;
  font-size: 1.2rem;
}

.suvinil-size-card span {
  color: var(--gray-text);
  font-weight: 700;
  font-size: 0.92rem;
}

.advanced-calc-card {
  display: grid;
  gap: 16px;
}

.advanced-calc-card label {
  display: grid;
  gap: 8px;
  color: var(--primary-dark);
  font-weight: 800;
}

.advanced-calc-card input {
  width: 100%;
  min-height: 50px;
  padding: 13px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #ffffff;
  color: var(--primary-dark);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.advanced-calc-card input:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(245, 130, 32, 0.14);
}

.advanced-result {
  display: block;
  padding: 18px;
  border-radius: 18px;
  background: var(--light-bg);
  color: var(--primary-dark);
  font-weight: 800;
}

.advanced-result strong {
  color: var(--primary-red);
}

.advanced-warning {
  margin: 0;
  padding: 15px;
  border-left: 4px solid var(--orange);
  border-radius: 14px;
  background: rgba(245, 130, 32, 0.08);
  color: var(--gray-text);
  font-size: 0.94rem;
}

.calculator-cta-section {
  background: var(--white);
}

.calculator-cta-box {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 34px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(37, 37, 37, 0.92), rgba(217, 37, 37, 0.84)),
    url("https://images.unsplash.com/photo-1589939705384-5185137a7f0f?auto=format&fit=crop&w=1400&q=80") center/cover;
  color: var(--white);
  box-shadow: var(--shadow);
}

.calculator-cta-box h2 {
  margin: 0 0 10px;
  font-family: "Poppins", sans-serif;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.calculator-cta-box p {
  max-width: 760px;
  margin: 0;
  color: rgba(255, 255, 255, 0.84);
}

.calculator-cta-box .eyebrow {
  color: var(--yellow);
}

.calculator-cta-box .eyebrow::before {
  background: var(--yellow);
}

.calculator-cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

@media (max-width: 1080px) {
  .main-nav {
    position: fixed;
    inset: calc(var(--header-height) + 42px) 16px auto 16px;
    display: grid;
    max-height: calc(100vh - 130px);
    overflow: auto;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 22px;
    background: var(--white);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .main-nav a {
    padding: 12px;
    border-radius: 12px;
  }

  .main-nav a::after {
    display: none;
  }

  .main-nav a:hover,
  .main-nav a.active {
    background: rgba(217, 37, 37, 0.08);
  }

  .hamburger {
    display: block;
  }
}

@media (max-width: 920px) {
  .top-bar__inner {
    flex-direction: column;
    justify-content: center;
    padding: 10px 0;
    text-align: center;
  }

  .top-bar__links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero__grid,
  .about-grid,
  .solution-layout,
  .brands-box,
  .calculator-grid,
  .location-grid,
  .contact-grid,
  .calc-hero__grid,
  .estimator-grid,
  .calculator-cta-box {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero__visual {
    min-height: auto;
  }

  .paint-card img {
    height: 390px;
  }

  .floating-note {
    left: 16px;
    bottom: 24px;
  }

  .color-grid,
  .inspiration-grid,
  .products-grid,
  .tips-grid,
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-card--wide {
    grid-column: span 2;
  }

  .calculator-cta-actions {
    justify-content: flex-start;
  }

  .official-calculator-frame {
    height: 680px;
  }

  .embed-fallback-card {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (max-width: 680px) {
  :root {
    --header-height: 74px;
  }

  .container {
    width: min(100% - 24px, var(--container));
  }

  .section {
    padding: 58px 0;
  }

  .logo img {
    width: 124px;
    max-height: 56px;
  }

  .header__actions .btn {
    display: none;
  }

  .hero {
    padding-top: 44px;
  }

  .hero h1 {
    font-size: clamp(2.35rem, 12vw, 3.35rem);
  }

  .hero__buttons {
    align-items: stretch;
    flex-direction: column;
  }

  .hero__buttons .btn {
    width: 100%;
  }

  .hero__badges {
    gap: 8px;
  }

  .paint-card,
  .calc-hero__card {
    border-width: 8px;
  }

  .paint-card img,
  .calc-hero__card img {
    height: 330px;
  }

  .paint-splash--red {
    left: 6px;
    top: 28px;
  }

  .paint-splash--blue {
    right: 0;
  }

  .paint-splash--yellow {
    right: 18px;
  }

  .color-arc {
    height: 68px;
  }

  .color-grid,
  .inspiration-grid,
  .products-grid,
  .tips-grid,
  .stats-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .product-card--wide {
    grid-column: auto;
  }

  .brands-box,
  .solution-panel,
  .calculator-card,
  .contact-form,
  .location-card,
  .preset-box,
  .advanced-calc-card,
  .calculator-cta-box {
    padding: 22px;
  }

  .location-actions,
  .footer-social {
    flex-direction: column;
  }

  .location-actions .btn,
  .calculator-cta-actions .btn {
    width: 100%;
  }

  .official-calculator-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .official-calculator-frame {
    height: 620px;
  }

  .preset-grid {
    grid-template-columns: 1fr;
  }

  .floating-contact {
    right: 14px;
    bottom: 82px;
  }

  .back-to-top {
    right: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}