/* ═══════════════════════════════════════════════════════════════
   Rioni GreenBuild — Stylesheet
   Pure CSS · No frameworks · No plugins
   ═══════════════════════════════════════════════════════════════ */

:root {
  --green-950: #0a1f14;
  --green-900: #0f2e1e;
  --green-800: #1a4d32;
  --green-700: #236b44;
  --green-600: #2d8654;
  --green-500: #3aa86a;
  --green-400: #52c47e;
  --green-300: #7dd9a0;
  --green-100: #e8f5ec;
  --green-50: #f4fbf6;
  --earth-800: #3d2e1f;
  --earth-600: #6b5344;
  --earth-400: #a0896e;
  --white: #ffffff;
  --gray-100: #f5f7f6;
  --gray-200: #e2e8e4;
  --gray-400: #94a89c;
  --gray-600: #5a6b60;
  --gray-800: #2c3830;
  --shadow-sm: 0 2px 8px rgba(10, 31, 20, 0.08);
  --shadow-md: 0 8px 30px rgba(10, 31, 20, 0.12);
  --shadow-lg: 0 20px 60px rgba(10, 31, 20, 0.18);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --header-h: 80px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-body);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

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

a {
  color: var(--green-600);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover { color: var(--green-400); }

ul { list-style: none; }

.container {
  width: min(1200px, 92vw);
  margin-inline: auto;
}

/* ── Typography ── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--green-500);
  margin-bottom: 1rem;
}

.section-label::before {
  content: '';
  width: 32px;
  height: 2px;
  background: var(--green-400);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--green-900);
}

h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }

.lead {
  font-size: 1.125rem;
  color: var(--gray-600);
  max-width: 620px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn--primary {
  background: var(--green-600);
  color: var(--white);
  border-color: var(--green-600);
}

.btn--primary:hover {
  background: var(--green-700);
  border-color: var(--green-700);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--white);
  color: var(--white);
}

.btn--dark {
  background: var(--green-900);
  color: var(--white);
  border-color: var(--green-900);
}

.btn--dark:hover {
  background: var(--green-800);
  color: var(--white);
  transform: translateY(-2px);
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition);
}

.btn:hover svg { transform: translateX(4px); }

/* ── Preloader ── */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--green-950);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s, visibility 0.5s;
}

#preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader__inner {
  text-align: center;
  color: var(--green-300);
}

.preloader__logo {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--white);
  margin-bottom: 1.5rem;
}

.preloader__logo img {
  height: 72px;
  width: auto;
  display: block;
  margin-inline: auto;
  border-radius: var(--radius-sm);
}

.preloader__bar {
  width: 120px;
  height: 3px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 3px;
  overflow: hidden;
  margin-inline: auto;
}

.preloader__bar::after {
  content: '';
  display: block;
  width: 40%;
  height: 100%;
  background: var(--green-400);
  border-radius: 3px;
  animation: loadBar 1.2s ease-in-out infinite;
}

@keyframes loadBar {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* ── Header ── */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}

#site-header.scrolled {
  background: rgba(10, 31, 20, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1200px, 92vw);
  margin-inline: auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--white);
}

.logo__img {
  height: 52px;
  width: auto;
  display: block;
  border-radius: var(--radius-sm);
}

.logo--footer .logo__img {
  height: 48px;
}

.logo__icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--green-400), var(--green-700));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
}

.logo__text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.1;
}

.logo__text small {
  display: block;
  font-family: var(--font-body);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.7;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  position: relative;
  padding: 0.25rem 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--green-400);
  transition: width var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--white);
}

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

.nav__cta {
  padding: 0.625rem 1.25rem !important;
  background: var(--green-500);
  border-radius: var(--radius-sm);
  color: var(--white) !important;
}

.nav__cta::after { display: none; }

.nav__cta:hover {
  background: var(--green-400);
  color: var(--white) !important;
}

#nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

#nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition);
}

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

.hero__bg {
  position: absolute;
  inset: -10%;
  background: url('../images/hero-construction.jpg') center / cover no-repeat;
  will-change: transform;
  animation: kenBurns 20s ease-in-out infinite alternate;
}

@keyframes kenBurns {
  0% { transform: scale(1.05); }
  100% { transform: scale(1.12); }
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 31, 20, 0.88) 0%,
    rgba(10, 31, 20, 0.55) 50%,
    rgba(26, 77, 50, 0.45) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 2;
  padding: calc(var(--header-h) + 4rem) 0 6rem;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(82, 196, 126, 0.15);
  border: 1px solid rgba(82, 196, 126, 0.35);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--green-300);
  margin-bottom: 1.5rem;
  animation: fadeUp 0.8s ease both;
}

.hero__badge svg { width: 16px; height: 16px; }

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  color: var(--white);
  max-width: 800px;
  margin-bottom: 1.25rem;
  animation: fadeUp 0.8s 0.15s ease both;
}

.hero h1 em {
  font-style: italic;
  color: var(--green-300);
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.8);
  max-width: 560px;
  margin-bottom: 2.5rem;
  animation: fadeUp 0.8s 0.3s ease both;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  animation: fadeUp 0.8s 0.45s ease both;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  animation: fadeUp 0.8s 0.6s ease both;
}

.hero__stat-num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  color: var(--green-300);
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 0.375rem;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: bounce 2s ease infinite;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--green-400), transparent);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Floating leaves ── */
#leaf-container {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}

.leaf {
  position: absolute;
  top: -30px;
  color: var(--green-400);
  animation: fall linear infinite;
}

.leaf::before { content: '🍃'; }

@keyframes fall {
  0% { transform: translateY(-30px) rotate(0deg) translateX(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(110vh) rotate(720deg) translateX(80px); opacity: 0; }
}

/* ── Sections ── */
section { padding: 6rem 0; }

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header .lead { margin-inline: auto; }

/* ── About ── */
.about { background: var(--green-50); }

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

.about__image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about__image-wrap img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.about__image-wrap:hover img { transform: scale(1.05); }

.about__experience {
  position: absolute;
  bottom: -1.5rem;
  right: -1.5rem;
  background: var(--green-600);
  color: var(--white);
  padding: 1.75rem;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.about__experience-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
}

.about__experience-text {
  font-size: 0.8125rem;
  opacity: 0.9;
  margin-top: 0.25rem;
}

.about__content h2 { margin-bottom: 1.25rem; }

.about__content .lead { margin-bottom: 1.5rem; }

.about__features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}

.feature-item {
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
}

.feature-item__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--green-100);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-600);
}

.feature-item__icon svg { width: 22px; height: 22px; }

.feature-item h4 {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.feature-item p {
  font-size: 0.8125rem;
  color: var(--gray-600);
}

/* ── Stats bar ── */
.stats-bar {
  background: var(--green-900);
  padding: 4rem 0;
}

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

.stats-bar__item {
  padding: 1rem;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.stats-bar__item:last-child { border-right: none; }

.stats-bar__num {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--green-300);
  line-height: 1;
}

.stats-bar__label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 0.5rem;
}

/* ── Services ── */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.service-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.service-card__image {
  height: 220px;
  overflow: hidden;
}

.service-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.service-card:hover .service-card__image img { transform: scale(1.08); }

.service-card__body { padding: 1.75rem; }

.service-card__num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--green-100);
  line-height: 1;
  margin-bottom: -0.5rem;
}

.service-card h3 { margin-bottom: 0.75rem; }

.service-card p {
  font-size: 0.9375rem;
  color: var(--gray-600);
  margin-bottom: 1.25rem;
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--green-600);
}

.service-card__link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}

.service-card:hover .service-card__link svg { transform: translateX(4px); }

/* ── Home Renovation Division ── */
.home-renovation {
  background: var(--white);
  position: relative;
  overflow: hidden;
}

.home-renovation::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 45%;
  height: 100%;
  background: linear-gradient(135deg, var(--green-50) 0%, rgba(232, 245, 236, 0.4) 100%);
  clip-path: polygon(0 0, 100% 0, 85% 100%, 0 100%);
  z-index: 0;
}

.home-renovation__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.home-renovation__content h2 { margin-bottom: 1.25rem; }

.home-renovation__content .lead { margin-bottom: 1.25rem; }

.home-renovation__content p { margin-bottom: 1rem; color: var(--gray-600); }

.home-renovation__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 1.5rem;
  margin: 1.75rem 0;
}

.home-renovation__list li {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.9375rem;
  color: var(--gray-800);
}

.home-renovation__list svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--green-500);
  margin-top: 2px;
}

.home-renovation__highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--green-50);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--green-500);
}

.home-renovation__highlight {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.home-renovation__highlight strong {
  font-family: var(--font-display);
  font-size: 1.125rem;
  color: var(--green-800);
}

.home-renovation__highlight span {
  font-size: 0.8125rem;
  color: var(--gray-600);
}

.home-renovation__visual {
  position: relative;
}

.home-renovation__image-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.home-renovation__image-wrap img {
  width: 100%;
  aspect-ratio: 5/6;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.home-renovation__image-wrap:hover img { transform: scale(1.04); }

.home-renovation__badge {
  position: absolute;
  bottom: -1.25rem;
  left: -1.25rem;
  background: var(--green-700);
  color: var(--white);
  padding: 1.5rem 1.75rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.home-renovation__badge-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1;
  color: var(--green-300);
}

.home-renovation__badge-text {
  display: block;
  font-size: 0.8125rem;
  margin-top: 0.375rem;
  opacity: 0.9;
}

/* ── Sustainability ── */
.sustainability {
  background: linear-gradient(160deg, var(--green-900) 0%, var(--green-800) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.sustainability::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(82, 196, 126, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.sustainability h2 { color: var(--white); }

.sustainability .section-label { color: var(--green-300); }
.sustainability .section-label::before { background: var(--green-300); }
.sustainability .lead { color: rgba(255, 255, 255, 0.7); }

.sustainability__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  position: relative;
  z-index: 1;
}

.sustain-card {
  padding: 2rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
  transition: background var(--transition), transform var(--transition);
}

.sustain-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.sustain-card__icon {
  width: 56px;
  height: 56px;
  background: rgba(82, 196, 126, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
}

.sustain-card h3 {
  color: var(--white);
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.sustain-card p {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.6;
}

.sustain-card__metric {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--green-300);
}

/* ── Projects ── */
.projects { background: var(--gray-100); }

.filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  border: 2px solid var(--gray-200);
  border-radius: 100px;
  background: var(--white);
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--green-600);
  border-color: var(--green-600);
  color: var(--white);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.project-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), opacity 0.4s;
  animation: cardIn 0.5s ease both;
}

.project-card.hidden {
  display: none;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.project-card__image {
  position: relative;
  height: 260px;
  overflow: hidden;
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.project-card:hover .project-card__image img { transform: scale(1.1); }

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 31, 20, 0.7) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
}

.project-card:hover .project-card__overlay { opacity: 1; }

.project-card__tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--green-500);
  color: var(--white);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 100px;
}

.project-card__body { padding: 1.5rem; }

.project-card__meta {
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-bottom: 0.5rem;
}

.project-card h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }

.project-card p {
  font-size: 0.875rem;
  color: var(--gray-600);
}

/* ── Process ── */
.process__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  counter-reset: step;
}

.process-step {
  text-align: center;
  position: relative;
  counter-increment: step;
}

.process-step::before {
  content: counter(step, decimal-leading-zero);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  background: var(--green-100);
  color: var(--green-600);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  border-radius: 50%;
  transition: all var(--transition);
}

.process-step:hover::before {
  background: var(--green-600);
  color: var(--white);
  transform: scale(1.1);
}

.process-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 32px;
  left: calc(50% + 40px);
  width: calc(100% - 80px);
  height: 2px;
  background: linear-gradient(to right, var(--green-300), var(--green-100));
}

.process-step h3 { font-size: 1.125rem; margin-bottom: 0.5rem; }

.process-step p {
  font-size: 0.875rem;
  color: var(--gray-600);
}

/* ── Testimonials ── */
.testimonials {
  background: var(--green-50);
  overflow: hidden;
}

.testimonial-carousel {
  max-width: 800px;
  margin-inline: auto;
  position: relative;
  min-height: 280px;
}

.testimonial-slide {
  position: absolute;
  inset: 0;
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
  pointer-events: none;
}

.testimonial-slide.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.testimonial-slide blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-style: italic;
  color: var(--green-900);
  line-height: 1.5;
  margin-bottom: 2rem;
}

.testimonial-slide blockquote::before {
  content: '\201C';
  display: block;
  font-size: 4rem;
  color: var(--green-300);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.testimonial-author {
  font-weight: 600;
  color: var(--green-800);
}

.testimonial-role {
  font-size: 0.875rem;
  color: var(--gray-400);
  margin-top: 0.25rem;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: var(--green-200);
  cursor: pointer;
  transition: all var(--transition);
  padding: 0;
}

.carousel-dot.active {
  background: var(--green-600);
  transform: scale(1.3);
}

/* ── Certifications ── */
.certifications__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.5rem;
  align-items: center;
}

.cert-badge {
  text-align: center;
  padding: 1.5rem 1rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.cert-badge:hover {
  border-color: var(--green-400);
  box-shadow: var(--shadow-sm);
  transform: translateY(-4px);
}

.cert-badge__icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.cert-badge__name {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--green-800);
  letter-spacing: 0.05em;
}

/* ── Contact ── */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
}

.contact__info h2 { margin-bottom: 1rem; }

.contact__details {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-item__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--green-100);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-600);
}

.contact-item__icon svg { width: 22px; height: 22px; }

.contact-item h4 {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  margin-bottom: 0.25rem;
}

.contact-item p,
.contact-item a {
  font-size: 1rem;
  color: var(--gray-800);
}

.contact-form {
  background: var(--green-50);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 0.375rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--gray-800);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green-500);
}

.form-group textarea { resize: vertical; min-height: 120px; }

/* ── Footer ── */
.footer {
  background: var(--green-950);
  color: rgba(255, 255, 255, 0.65);
  padding: 4rem 0 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer .logo { margin-bottom: 1rem; }

.footer__desc {
  font-size: 0.9375rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer h4 {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--white);
  margin-bottom: 1.25rem;
}

.footer ul li { margin-bottom: 0.625rem; }

.footer ul a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

.footer ul a:hover { color: var(--green-300); }

.footer__bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8125rem;
}

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .services__grid,
  .projects__grid,
  .sustainability__grid { grid-template-columns: repeat(2, 1fr); }
  .certifications__grid { grid-template-columns: repeat(3, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .process__steps { grid-template-columns: repeat(2, 1fr); }
  .process-step:not(:last-child)::after { display: none; }
}

@media (max-width: 768px) {
  :root { --header-h: 70px; }

  #nav-toggle { display: flex; }

  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 85vw);
    height: 100vh;
    background: var(--green-950);
    flex-direction: column;
    align-items: flex-start;
    padding: calc(var(--header-h) + 2rem) 2rem 2rem;
    gap: 0;
    transition: right var(--transition);
  }

  .nav__menu.open { right: 0; }

  .nav__menu li { width: 100%; }

  .nav__link {
    display: block;
    padding: 1rem 0;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav__cta { margin-top: 1rem; text-align: center; width: 100%; }

  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .about__grid { grid-template-columns: 1fr; gap: 2rem; }
  .about__experience { right: 1rem; bottom: -1rem; }
  .home-renovation__grid { grid-template-columns: 1fr; gap: 2rem; }
  .home-renovation::before { width: 100%; height: 40%; clip-path: none; }
  .home-renovation__list { grid-template-columns: 1fr; }
  .home-renovation__badge { left: 1rem; bottom: -1rem; }
  .stats-bar__grid { grid-template-columns: repeat(2, 1fr); }
  .stats-bar__item:nth-child(2) { border-right: none; }
  .services__grid,
  .projects__grid,
  .sustainability__grid { grid-template-columns: 1fr; }
  .contact__grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .certifications__grid { grid-template-columns: repeat(2, 1fr); }
  .process__steps { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  section { padding: 4rem 0; }
  .hero__stats { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
  .about__features { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero__bg { animation: none; }
}