* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #0f172a;
  --secondary: #1e293b;
  --accent: #4da8ff;
  --white: #ffffff;
  --light: #f8fafc;
  --gray: #64748b;
  --border: rgba(255,255,255,0.08);

  --shadow:
    0 10px 30px rgba(0,0,0,0.12);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: var(--white);
  color: var(--primary);
  line-height: 1.6;
}

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

a {
  text-decoration: none;
}

.container {
  width: min(1180px, 92%);
  margin: auto;
}

/* =========================
   HEADER
========================= */

.site-header {
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 999;
  background: rgba(8,15,28,0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav {
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  width: 160px;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--white);
  font-size: 0.95rem;
  transition: 0.3s ease;
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-call {
  background: var(--accent);
  color: var(--white);
  padding: 0.8rem 1.2rem;
  border-radius: 999px;
  font-weight: 600;
  transition: 0.3s ease;
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
}

/* =========================
   HERO
========================= */

.hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(5,10,20,0.72), rgba(5,10,20,0.72)),
    url('../img/hero.png') center/cover no-repeat;
  transform: scale(1.03);
}

.hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 0.7fr;
  gap: 4rem;
  align-items: center;
  padding-top: 8rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  font-size: 0.82rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.hero h1 {
  color: var(--white);
  font-size: clamp(3rem, 6vw, 5.8rem);
  line-height: 1.05;
  max-width: 720px;
}

.hero-text {
  color: rgba(255,255,255,0.82);
  max-width: 620px;
  margin-top: 1.5rem;
  font-size: 1.08rem;
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  padding: 1rem 1.5rem;
  border-radius: 999px;
  font-weight: 700;
  transition: 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn.primary {
  background: var(--accent);
  color: var(--white);
}

.btn.secondary {
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--white);
}

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

.hero-service-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.hero-service-pills span {
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.82);
  padding: 0.7rem 1rem;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

.hero-highlights {
  display: grid;
  gap: 1rem;
}

.highlight-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 1.8rem;
  border-radius: 24px;
  backdrop-filter: blur(10px);
}

.highlight-card strong {
  color: var(--white);
  font-size: 1.6rem;
  display: block;
}

.highlight-card span {
  color: rgba(255,255,255,0.7);
}

.promo-drop {
  position: absolute;
  top: 82px;
  width: 100%;
  background: var(--accent);
  color: white;
  padding: 0.9rem 1rem;
  text-align: center;
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.promo-drop a {
  color: white;
  text-decoration: underline;
  font-weight: 700;
}

/* =========================
   SECTIONS
========================= */

section {
  padding: 7rem 0;
}

.section-heading {
  margin-bottom: 3rem;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.6rem);
  max-width: 720px;
  line-height: 1.1;
}

.center-heading {
  text-align: center;
}

.center-heading h2 {
  margin-inline: auto;
}

.center-heading p {
  max-width: 700px;
  margin-inline: auto;
}

/* =========================
   SERVICES
========================= */

.services {
  background: var(--light);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card {
  background: white;
  border-radius: 28px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin-bottom: 1rem;
  font-size: 1.35rem;
}

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

.service-icon {
  width: 62px;
  height: 62px;
  border-radius: 18px;
  margin-bottom: 1.4rem;
}

.window-icon {
  background: linear-gradient(135deg, #4da8ff, #7cc5ff);
}

.pressure-icon {
  background: linear-gradient(135deg, #1e293b, #334155);
}

.build-icon {
  background: linear-gradient(135deg, #f59e0b, #fbbf24);
}

/* =========================
   FEATURES
========================= */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4rem;
  align-items: center;
}

.reverse {
  direction: rtl;
}

.reverse > * {
  direction: ltr;
}

.feature-image img {
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.feature-copy h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.feature-copy p {
  color: var(--gray);
  margin-bottom: 2rem;
}

.dark-feature {
  background: var(--primary);
}

.dark-feature h2,
.dark-feature p {
  color: white;
}

/* =========================
   TRUST
========================= */

.trust-section {
  background: var(--light);
}

.trust-layout {
  display: grid;
  grid-template-columns: 0.9fr 1fr;
  gap: 4rem;
  align-items: center;
}

.trust-copy h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.trust-copy p {
  color: var(--gray);
}

.trust-images {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.trust-images img {
  border-radius: 24px;
  height: 100%;
  object-fit: cover;
  box-shadow: var(--shadow);
}

/* =========================
   GALLERY
========================= */

.gallery {
  overflow: hidden;
}

.image-carousel {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-stage {
  width: 100%;
  height: 600px;
  position: relative;
  overflow: hidden;
}

.gallery-image {
  position: absolute;
  top: 0;
  width: 60%;
  height: 100%;
  object-fit: cover;
  border-radius: 30px;
  transition: all 0.6s ease;
  opacity: 0;
  box-shadow: var(--shadow);
}

.active-image {
  left: 50%;
  transform: translateX(-50%);
  opacity: 1;
  z-index: 3;
}

.prev-image {
  left: 5%;
  transform: scale(0.85);
  opacity: 0.5;
  z-index: 1;
}

.next-image {
  right: 5%;
  transform: scale(0.85);
  opacity: 0.5;
  z-index: 1;
}

.carousel-arrow {
  position: absolute;
  z-index: 5;
  border: none;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: white;
  cursor: pointer;
  font-size: 1.6rem;
  box-shadow: var(--shadow);
}

.image-prev {
  left: -10px;
}

.image-next {
  right: -10px;
}

.carousel-dots {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  gap: 0.8rem;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: #cbd5e1;
  cursor: pointer;
}

.dot.active {
  background: var(--accent);
}

/* =========================
   REVIEWS
========================= */

.reviews {
  background: var(--light);
}

.reviews-grid {
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  gap: 4rem;
  align-items: center;
}

.reviews-copy h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.reviews-copy p {
  color: var(--gray);
}

.review-carousel {
  position: relative;
}

.review-window {
  overflow: hidden;
}

.review-track {
  display: flex;
  transition: transform 0.5s ease;
}

.review-card {
  min-width: 100%;
  background: white;
  padding: 2rem;
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.review-stars {
  color: #fbbf24;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.review-card p {
  color: var(--gray);
  margin-bottom: 1.5rem;
}

.review-card strong {
  display: block;
}

.review-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: white;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow);
  z-index: 5;
}

.review-prev {
  left: -24px;
}

.review-next {
  right: -24px;
}

/* =========================
   PROMO
========================= */

.promo-box {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  border-radius: 32px;
  padding: 3rem;
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: center;
}

.promo-content h2 {
  color: white;
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.promo-content p {
  color: rgba(255,255,255,0.72);
}

/* =========================
   QUOTE
========================= */

.quote {
  background: var(--light);
}

.quote-grid {
  display: grid;
  grid-template-columns: 0.9fr 1fr;
  gap: 4rem;
  align-items: start;
}

.quote-copy h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  margin-bottom: 1rem;
}

.quote-copy p {
  color: var(--gray);
}

.contact-card {
  margin-top: 2rem;
  background: white;
  padding: 1.5rem;
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.contact-card a {
  display: block;
  margin-top: 0.5rem;
  color: var(--accent);
  font-weight: 700;
}

.quote-form {
  background: white;
  padding: 2rem;
  border-radius: 28px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 1rem;
}

.quote-form input,
.quote-form textarea,
.quote-form select {
  width: 100%;
  padding: 1rem;
  border-radius: 14px;
  border: 1px solid #dbe2ea;
  font-family: inherit;
}

.quote-form textarea {
  min-height: 140px;
  resize: vertical;
}

.quote-form button {
  border: none;
  background: var(--accent);
  color: white;
  padding: 1rem;
  border-radius: 14px;
  font-weight: 700;
  cursor: pointer;
}

/* =========================
   FOOTER
========================= */

footer {
  background: #08101d;
  padding: 4rem 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 3rem;
  align-items: center;
}

.footer-logo {
  width: 180px;
}

footer h3 {
  color: white;
  margin-bottom: 1rem;
}

footer p {
  color: rgba(255,255,255,0.68);
  margin-bottom: 0.4rem;
}

/* =========================
   RESPONSIVE
========================= */

@media (max-width: 1024px) {

  .hero-layout,
  .feature-grid,
  .trust-layout,
  .reviews-grid,
  .quote-grid,
  .cards {
    grid-template-columns: 1fr;
  }

  .hero-highlights {
    grid-template-columns: repeat(3, 1fr);
  }

  .image-stage {
    height: 480px;
  }

  .gallery-image {
    width: 80%;
  }
}

@media (max-width: 768px) {

  .nav-links {
    position: absolute;
    top: 82px;
    left: 0;
    width: 100%;
    background: #08101d;
    flex-direction: column;
    padding: 2rem;
    display: none;
  }

  .nav-links.active {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-call {
    display: none;
  }

  .hero h1 {
    font-size: 3rem;
  }

  .hero-highlights {
    grid-template-columns: 1fr;
  }

  .image-stage {
    height: 360px;
  }

  .gallery-image {
    width: 90%;
  }

  .prev-image,
  .next-image {
    display: none;
  }

  .trust-images {
    grid-template-columns: 1fr;
  }

  .promo-box,
  .footer-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .carousel-arrow,
  .review-arrow {
    display: none;
  }
}