:root {
  --bg: #ffffff;
  --text: #1f1f1f;
  --muted: #666666;
  --line: #e7e7e7;
  --soft: #f7f7f7;
  --dark: #141414;
  --accent: #111111;
  --shadow: 0 14px 35px rgba(0, 0, 0, 0.08);
  --radius: 16px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

section[id] {
  scroll-margin-top: 110px;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(1180px, 90%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.logo {
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: #111;
}

.menu-toggle {
  display: none;
  border: 1px solid #d8d8d8;
  background: #fff;
  color: #111;
  width: 46px;
  height: 46px;
  border-radius: 10px;
  font-size: 1.2rem;
  cursor: pointer;
}

.mobile-menu {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 12px;
}

.nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: #666;
  font-weight: 700;
  position: relative;
  transition: color 0.2s ease;
}

.nav a:hover,
.nav a.active {
  color: #111;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: #111;
  transition: width 0.25s ease;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid #dcdcdc;
  border-radius: 999px;
  background: #fafafa;
}

.lang-btn {
  border: none;
  background: transparent;
  color: #777;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
  padding: 4px 7px;
  border-radius: 999px;
}

.lang-btn.active {
  color: #111;
  background: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.lang-divider {
  color: #b4b4b4;
}

.header-cta {
  text-decoration: none;
  background: #111;
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: url("../images/hero-floor.jpg") center/cover no-repeat;
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.52);
}

.hero-content {
  position: relative;
  color: #fff;
  max-width: 760px;
  padding: 100px 0;
}

.eyebrow,
.section-tag {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #888;
}

.eyebrow {
  color: #ffffff;
  opacity: 0.9;
}

.section-tag-light {
  color: #d9d9d9;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  line-height: 1.08;
  margin-bottom: 18px;
}

.hero p {
  font-size: 1.08rem;
  max-width: 680px;
  margin-bottom: 28px;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.btn {
  display: inline-block;
  text-decoration: none;
  border: none;
  cursor: pointer;
  padding: 14px 24px;
  border-radius: 10px;
  font-weight: 800;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: #fff;
  color: #111;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.stat {
  min-width: 140px;
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(3px);
}

.stat strong {
  display: block;
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.stat span {
  font-size: 0.92rem;
  opacity: 0.9;
}

.section {
  padding: 95px 0;
}

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

.section-dark {
  background: var(--dark);
}

.light-text {
  color: #fff;
}

.section-heading {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 52px;
}

.section-heading h2 {
  font-size: 2.2rem;
  margin-bottom: 10px;
}

.section-heading p {
  color: var(--muted);
}

.section-dark .section-heading p {
  color: #d0d0d0;
}

.service-grid,
.project-grid,
.contact-grid,
.footer-grid {
  display: grid;
  gap: 28px;
}

.service-grid {
  grid-template-columns: repeat(2, 1fr);
}

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

.contact-grid {
  grid-template-columns: repeat(2, 1fr);
}

.footer-grid {
  grid-template-columns: 1.2fr 1fr 1fr;
}

.service-card,
.project-card,
.contact-card,
.about-box {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.service-card:hover,
.project-card:hover,
.contact-card:hover,
.about-box:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
}

.card-image-wrap,
.project-image-btn {
  display: block;
  border: none;
  padding: 0;
  background: none;
  width: 100%;
  cursor: pointer;
}

.service-card img,
.project-card img {
  width: 100%;
  height: 290px;
  object-fit: cover;
  transition: transform 0.35s ease, filter 0.3s easy;
}

.service-card:hover img,
.project-card:hover img {
  transform: scale(1.03);
  filter: brightness(1.03);
}

.service-card-content,
.project-card-content {
  padding: 24px;
}

.contact-card {
  padding: 24px;
}

.service-badge {
  display: inline-block;
  margin-bottom: 10px;
  padding: 5px 10px;
  border-radius: 999px;
  background: #f0f0f0;
  font-size: 0.78rem;
  font-weight: 800;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.service-card h3,
.project-card h3,
.contact-card h3,
.about-box h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr;
  gap: 32px;
  align-items: start;
}

.about-grid h2 {
  margin-bottom: 16px;
  font-size: 2rem;
}

.about-grid p {
  margin-bottom: 16px;
}

.about-box {
  padding: 24px;
  background: #f9f9f9;
  border: 1px solid var(--line);
}

.about-box ul {
  padding-left: 20px;
}

.about-box li {
  margin-bottom: 10px;
}

.cta-strip {
  padding-top: 0;
}

.cta-strip-inner {
  background: linear-gradient(135deg, #111, #2b2b2b);
  color: #fff;
  border-radius: 22px;
  padding: 38px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  box-shadow: var(--shadow);
}

.cta-strip-inner h2 {
  margin-bottom: 10px;
  font-size: 2rem;
}

.contact-card a {
  color: inherit;
  text-decoration: none;
}

.contact-form {
  display: grid;
  gap: 14px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid #d8d8d8;
  border-radius: 10px;
  padding: 14px 16px;
  background: #fff;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form button {
  width: fit-content;
}

.form-note {
  font-size: 0.92rem;
  color: #777;
}

.footer {
  background: #101010;
  color: #d7d7d7;
  padding: 70px 0 24px;
}

.footer-col h3,
.footer-col h4 {
  color: #fff;
  margin-bottom: 15px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li,
.footer-col p {
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid #2b2b2b;
  margin-top: 34px;
  padding-top: 18px;
  text-align: center;
  color: #9a9a9a;
  font-size: 0.92rem;
}

.floating-btn {
  position: fixed;
  right: 18px;
  z-index: 1001;
  text-decoration: none;
  color: #fff;
  padding: 12px 16px;
  border-radius: 999px;
  font-weight: 800;
  box-shadow: var(--shadow);
}

.whatsapp-btn {
  bottom: 86px;
  background: #25d366;
}

.call-btn {
  bottom: 26px;
  background: #111;
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.86);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 2000;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: min(1100px, 95vw);
  max-height: 88vh;
  border-radius: 16px;
}

.lightbox-close {
  position: absolute;
  top: 22px;
  right: 24px;
  border: none;
  background: #fff;
  color: #111;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  font-size: 1.6rem;
  cursor: pointer;
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (max-width: 1000px) {
  .project-grid,
  .about-grid,
  .contact-grid,
  .footer-grid,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .cta-strip-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .service-card:hover,
  .project-card:hover,
  .contact-card:hover,
  .about-box:hover {
    transform: none;
    box-shadow: var(--shadow);
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .mobile-menu {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    padding: 0 0 18px 0;
  }

  .mobile-menu.open {
    display: flex;
  }

  .nav {
    width: 100%;
    flex-direction: column;
    gap: 0;
  }

  .nav a {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid #efefef;
  }

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

  .header-actions {
    width: 100%;
    flex-wrap: wrap;
    gap: 12px;
  }

  .header-cta {
    padding: 12px 18px;
  }

  .hero {
    min-height: auto;
  }

  .hero-content {
    padding: 72px 0 64px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section {
    padding: 72px 0;
  }

  .service-card img,
  .project-card img {
    height: 220px;
  }

  .floating-btn {
    right: 12px;
    padding: 10px 14px;
    font-size: 0.9rem;
  }

  .whatsapp-btn {
    bottom: 72px;
  }

  .call-btn {
    bottom: 18px;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(1180px, 92%);
  }

  .hero-content {
    padding: 60px 0 56px;
  }

  .hero-buttons,
  .hero-stats,
  .header-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn,
  .header-cta {
    text-align: center;
  }

  .cta-strip-inner {
    padding: 28px 22px;
  }

  .section-heading h2,
  .about-grid h2,
  .cta-strip-inner h2 {
    font-size: 1.8rem;
  }

  .floating-btn {
    display: none;
  }
}

.form-success {
  display: none;
  margin-top: 6px;
  padding: 12px 14px;
  border-radius: 10px;
  background: #eef8ee;
  color: #1f6b2d;
  border: 1px solid #cfe9d2;
  font-size: 0.95rem;
  font-weight: 600;
}

.form-success.show {
  display: block;
}

.site-header.scrolled {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.menu-toggle.active {
  background: #111;
  color: #fff;
  border-color: #111;
}