/* ============================================
   Qui'étude Travaux — Main Stylesheet
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  --green: #00C000;
  --green-dark: #00a000;
  --green-light: #e6f9e6;
  --yellow: #FFCC00;
  --yellow-light: #fff8dc;
  --black: #000000;
  --text: #1a1a1a;
  --text-light: #555555;
  --bg: #ffffff;
  --bg-alt: #f8f9fa;
  --bg-footer: #1a1a1a;
  --border: #e0e0e0;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.10);
  --transition: 0.3s ease;
  --max-width: 1140px;
  --header-height: 80px;
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

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

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--black);
  font-weight: 700;
  line-height: 1.25;
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2rem; margin-bottom: 1rem; }
h3 { font-size: 1.35rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.15rem; margin-bottom: 0.5rem; }

p {
  margin-bottom: 1rem;
}

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section--alt {
  background: var(--bg-alt);
}

.section--green {
  background: var(--green);
  color: #fff;
}

.section--green h2,
.section--green h3,
.section--green p {
  color: #fff;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border: none;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
}

.btn--primary {
  background: var(--green);
  color: #fff;
}

.btn--primary:hover {
  background: var(--green-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--green);
  border: 2px solid var(--green);
}

.btn--outline:hover {
  background: var(--green);
  color: #fff;
  transform: translateY(-1px);
}

.btn--white {
  background: #fff;
  color: var(--green);
}

.btn--white:hover {
  background: var(--green-light);
  color: var(--green-dark);
  transform: translateY(-1px);
}

.btn--lg {
  padding: 16px 40px;
  font-size: 1.05rem;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.header__logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--black);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.header__logo span {
  color: var(--green);
}

.header__logo:hover {
  color: var(--black);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav__link {
  padding: 8px 12px;
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 6px;
  transition: all var(--transition);
  white-space: nowrap;
}

.nav__link:hover {
  color: var(--green);
  background: transparent;
}

.nav__link.active {
  color: var(--green);
  background: var(--green-light);
}

/* Nav dropdown */
.nav__dropdown {
  position: relative;
}

.nav__dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 6px;
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
}

.nav__dropdown-trigger:hover,
.nav__dropdown.open .nav__dropdown-trigger {
  color: var(--green);
  background: var(--green-light);
}

.nav__dropdown-trigger svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition);
}

.nav__dropdown.open .nav__dropdown-trigger svg {
  transform: rotate(180deg);
}

.nav__dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 8px 0;
  opacity: 0;
  pointer-events: none;
  transform: none;
  transition: all var(--transition);
  z-index: 100;
}

.nav__dropdown.open .nav__dropdown-menu {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.nav__dropdown:hover .nav__dropdown-menu {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.nav__dropdown-menu .nav__link {
  display: block;
  padding: 10px 18px;
  border-radius: 0;
  font-size: 0.88rem;
}

.nav__dropdown-menu .nav__link:hover,
.nav__dropdown-menu .nav__link.active {
  background: var(--green-light);
  color: var(--green);
}

/* Mobile nav toggle */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 1002;
  align-items: center;
  justify-content: center;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--black);
  margin: 0 auto;
  transition: all var(--transition);
}

.nav__toggle span:nth-child(2) {
  margin: 6px auto;
}

.nav__toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.nav__toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ---------- Hero ---------- */
.hero {
  margin-top: var(--header-height);
  padding: 100px 0 80px;
  background: linear-gradient(135deg, #f0fdf0 0%, #ffffff 50%, #fffef5 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,192,0,0.05) 0%, transparent 70%);
  border-radius: 50%;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero__label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--green-light);
  color: var(--green-dark);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero__label::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
}

.hero__title {
  font-size: 2.85rem;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero__title span {
  color: var(--green);
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 32px;
  max-width: 520px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__image {
  position: relative;
  z-index: 1;
}

.hero__image img {
  border-radius: var(--radius-lg);
  object-fit: cover;
  width: 100%;
  height: 420px;
  box-shadow: var(--shadow-lg);
}

/* ---------- Page Hero (inner pages) ---------- */
.page-hero {
  margin-top: var(--header-height);
  padding: 70px 0 60px;
  background: linear-gradient(135deg, #f0fdf0 0%, #ffffff 60%, #fffef5 100%);
  text-align: center;
}

.page-hero h1 {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 640px;
  margin: 0 auto 24px;
}

/* ---------- Questions cards (homepage) ---------- */
.questions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.question-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: all var(--transition);
}

.question-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-sm);
}

.question-card__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-light);
  color: var(--green);
  border-radius: 8px;
  font-size: 1.1rem;
}

.question-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text);
}

/* ---------- Services cards ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.services-grid--4 {
  grid-template-columns: repeat(2, 1fr);
}

.service-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: all var(--transition);
  text-align: center;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--green);
}

.service-card--left {
  text-align: left;
}

.service-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-light);
  color: var(--green);
  border-radius: 12px;
  margin: 0 auto 20px;
  font-size: 1.4rem;
}

.service-card h3 {
  margin-bottom: 12px;
}

.service-card p {
  color: var(--text-light);
  font-size: 0.92rem;
  margin: 0 auto;
}

.service-card .btn {
  margin-top: 20px;
}

/* ---------- Values section ---------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.value-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition);
}

.value-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-sm);
}

.value-card__bar {
  width: 40px;
  height: 4px;
  background: var(--green);
  border-radius: 2px;
  margin-bottom: 20px;
}

.value-card h3 {
  margin-bottom: 12px;
}

.value-card p {
  color: var(--text-light);
  font-size: 0.92rem;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: var(--green);
  padding: 60px 0;
  text-align: center;
}

.cta-banner h2 {
  color: #fff;
  margin-bottom: 12px;
}

.cta-banner p {
  color: rgba(255,255,255,0.9);
  margin: 0 auto 28px;
  max-width: 560px;
}

/* ---------- Two Column Layout ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.two-col--reverse {
  direction: rtl;
}

.two-col--reverse > * {
  direction: ltr;
}

.two-col__image img {
  border-radius: var(--radius-lg);
  object-fit: cover;
  width: 100%;
  box-shadow: var(--shadow-md);
}

.two-col__content h2 {
  margin-bottom: 16px;
}

.two-col__content p {
  color: var(--text-light);
  margin-bottom: 14px;
}

/* ---------- Feature List ---------- */
.feature-list {
  margin: 20px 0 24px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  font-size: 0.95rem;
  line-height: 1.55;
}

.feature-list li::before {
  content: '';
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  background: var(--green-light);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2300C000' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

/* ---------- Numbered Blocks ---------- */
.numbered-block {
  margin-bottom: 40px;
}

.numbered-block__header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.numbered-block__num {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green);
  color: #fff;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.numbered-block__header h3 {
  margin: 0;
}

/* ---------- Timeline (alternating centered) ---------- */
.timeline {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
  transform: translateX(-50%);
}

.timeline__item {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  gap: 0;
  align-items: start;
  margin-bottom: 48px;
  position: relative;
}

.timeline__item:last-child {
  margin-bottom: 0;
}

.timeline__marker {
  grid-column: 2;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: var(--shadow-sm);
  z-index: 2;
  justify-self: center;
}

.timeline__heading {
  padding: 12px 28px 12px 0;
  text-align: right;
}

.timeline__heading h3 {
  margin: 0;
  font-size: 1.15rem;
}

.timeline__body {
  padding: 18px 24px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.timeline__body ul {
  margin: 0;
  padding-left: 18px;
  list-style: disc;
}

.timeline__body li {
  margin-bottom: 6px;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--text-light);
}

/* Odd items (1, 3, 5): title LEFT, list RIGHT (default) */

/* Even items (2, 4): title RIGHT, list LEFT — swap columns */
.timeline__item:nth-child(even) .timeline__heading {
  grid-column: 3;
  grid-row: 1;
  text-align: left;
  padding: 12px 0 12px 28px;
}

.timeline__item:nth-child(even) .timeline__marker {
  grid-column: 2;
  grid-row: 1;
}

.timeline__item:nth-child(even) .timeline__body {
  grid-column: 1;
  grid-row: 1;
  text-align: left;
  padding: 18px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.timeline__item:nth-child(even) .timeline__body ul {
  list-style-position: outside;
  padding-left: 18px;
}

/* ---------- Timeline responsive ---------- */
@media (max-width: 768px) {
  .timeline::before {
    left: 23px;
  }

  .timeline__item {
    display: flex;
    flex-direction: column;
    padding-left: 64px;
    margin-bottom: 36px;
  }

  .timeline__marker {
    position: absolute;
    left: 0;
    top: 0;
  }

  .timeline__heading {
    text-align: left;
    padding: 0 0 8px 0;
  }

  .timeline__body {
    padding: 0;
    text-align: left;
  }

  .timeline__item:nth-child(even) .timeline__heading {
    grid-column: auto;
    grid-row: auto;
    text-align: left;
    padding: 0 0 8px 0;
  }

  .timeline__item:nth-child(even) .timeline__body {
    grid-column: auto;
    grid-row: auto;
    text-align: left;
    padding: 0;
  }

  .timeline__item:nth-child(even) .timeline__body ul {
    list-style-position: outside;
    padding-left: 18px;
  }
}

/* ---------- Advantages Grid ---------- */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin: 32px 0;
}

.advantage-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: all var(--transition);
}

.advantage-item:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-sm);
}

.advantage-item__icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-light);
  color: var(--green);
  border-radius: 8px;
  font-size: 1rem;
}

.advantage-item p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.5;
}

/* ---------- Tab-like sections (thermal page) ---------- */
.info-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 32px 0;
}

.info-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all var(--transition);
}

.info-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-sm);
}

.info-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-light);
  color: var(--green);
  border-radius: 10px;
  margin: 0 auto 14px;
  font-size: 1.2rem;
}

.info-card h4 {
  margin-bottom: 8px;
  font-size: 1rem;
}

.info-card p {
  color: var(--text-light);
  font-size: 0.85rem;
  margin: 0;
}

/* ---------- Criteria List ---------- */
.criteria-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 24px 0;
}

.criteria-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  font-size: 0.92rem;
  transition: background var(--transition);
}

.criteria-item:hover {
  background: var(--green-light);
}

.criteria-item i {
  color: var(--green);
  font-size: 0.9rem;
}

/* ---------- Isolant / Energy Cards Grid ---------- */
.isolant-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 32px 0;
}

.isolant-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
}

.isolant-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-sm);
}

.isolant-card__icon {
  margin-bottom: 12px;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: calc(var(--radius) - 2px);
}

.isolant-card__icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.isolant-card h4 {
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.isolant-card p {
  color: var(--text-light);
  font-size: 0.82rem;
  margin: 0;
}

/* ---------- Gallery Grid ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 40px;
}

.gallery-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  background: #fff;
}

.gallery-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.gallery-card__image {
  height: 280px;
  overflow: hidden;
}

.gallery-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-card:hover .gallery-card__image img {
  transform: scale(1.03);
}

.gallery-card__body {
  padding: 22px 24px;
}

.gallery-card__body h3 {
  font-size: 1.1rem;
  margin: 0;
}

/* ---------- Photo slider inside gallery card ---------- */
.photo-slider {
  position: relative;
  overflow: hidden;
  height: 280px;
}

.photo-slider__track {
  display: flex;
  height: 100%;
  transition: transform 0.4s ease;
}

.photo-slider__slide {
  flex: 0 0 100%;
  height: 100%;
}

.photo-slider__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.photo-slider__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.45);
  border: none;
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: background 0.2s;
}

.photo-slider__btn:hover {
  background: rgba(0,0,0,0.7);
}

.photo-slider__btn--prev { left: 10px; }
.photo-slider__btn--next { right: 10px; }

.photo-slider__dots {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 2;
}

.photo-slider__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.55);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s;
}

.photo-slider__dot.active {
  background: #fff;
}

/* ---------- Contact Form ---------- */
.contact-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: flex-start;
}

.contact-info__item {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.contact-info__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-light);
  color: var(--green);
  border-radius: 10px;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-info__text {
  font-size: 1rem;
}

.contact-info__text strong {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  margin-bottom: 2px;
}

.contact-info__text a {
  color: var(--text);
  font-weight: 600;
}

.contact-info__text a:hover {
  color: var(--green);
}

.contact-form {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition);
  background: #fff;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(0,192,0,0.1);
}

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

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 24px;
}

.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--green);
  flex-shrink: 0;
}

.form-checkbox label {
  font-size: 0.82rem;
  color: var(--text-light);
  line-height: 1.5;
}

/* ---------- Before / After ---------- */
.before-after {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 32px 0;
}

.before-after__item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}

.before-after__item img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.before-after__label {
  padding: 12px 16px;
  text-align: center;
  font-weight: 600;
  font-size: 0.88rem;
  background: var(--bg-alt);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--bg-footer);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}

.footer__brand {
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.footer__brand span {
  color: var(--green);
}

.footer__desc {
  font-size: 0.88rem;
  line-height: 1.65;
  max-width: 320px;
}

.footer h4 {
  color: #fff;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.88rem;
  transition: color var(--transition);
}

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

.footer__bottom {
  margin-top: 48px;
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.8rem;
}

.footer__bottom a {
  color: rgba(255,255,255,0.5);
}

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

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ---------- Yellow accent bar ---------- */
.accent-bar {
  width: 50px;
  height: 4px;
  background: var(--yellow);
  border-radius: 2px;
  margin-bottom: 20px;
}

.text-center .accent-bar {
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Section intro ---------- */
.section__intro {
  margin: 0 0 40px;
  text-align: left;
}

.section__intro p {
  color: var(--text-light);
  margin-bottom: 1rem;
}

/* ---------- Blockquote / Highlight ---------- */
.highlight-box {
  background: var(--green-light);
  border-left: 4px solid var(--green);
  padding: 24px 28px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 24px 0;
}

.highlight-box p {
  margin: 0;
  color: var(--text);
  font-weight: 500;
}

/* ---------- AMO domains list ---------- */
.domain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin: 32px 0;
}

.domain-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition);
}

.domain-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-sm);
}

.domain-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.domain-card h3 i {
  color: var(--green);
}

.domain-card ul {
  margin: 0;
}

.domain-card li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.5;
}

.domain-card li::before {
  content: '';
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-top: 3px;
  background: var(--green-light);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%2300C000' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__image {
    max-width: 500px;
    margin: 0 auto;
  }

  .hero__title {
    font-size: 2.3rem;
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .two-col--reverse {
    direction: ltr;
  }

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

  .services-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

  .contact-section {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }

  .section {
    padding: 56px 0;
  }

  .nav__toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: 1001;
    overflow-y: auto;
    padding: 100px 0 40px;
    min-height: 100vh;
  }

  .nav.open {
    opacity: 1;
    pointer-events: all;
  }

  .nav__list {
    flex-direction: column;
    gap: 12px;
    text-align: center;
    padding: 40px;
    width: 100%;
    max-width: 420px;
  }

  .nav__link {
    font-size: 1.15rem;
    padding: 14px 32px;
    display: block;
  }

  /* Dropdown in mobile: flatten */
  .nav__dropdown {
    position: static;
  }

  .nav__dropdown-trigger {
    font-size: 1.15rem;
    padding: 14px 32px;
    justify-content: center;
    width: 100%;
  }

  .nav__dropdown-menu {
    position: static;
    opacity: 1;
    pointer-events: all;
    transform: none;
    box-shadow: none;
    border: none;
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 4px 0;
    margin: 4px 12px 8px;
    display: none;
  }

  .nav__dropdown.open .nav__dropdown-menu {
    display: block;
  }

  .nav__dropdown-menu .nav__link {
    font-size: 1rem;
    padding: 12px 24px;
    text-align: center;
  }

  .hero {
    padding: 60px 0 50px;
    text-align: center;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__subtitle {
    margin: 0 auto 28px;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__label {
    margin: 0 auto 20px;
  }

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

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

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

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

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

  .before-after {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .info-cards {
    grid-template-columns: 1fr;
  }

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

  .page-hero h1 {
    font-size: 1.8rem;
  }

  .cta-banner {
    padding: 48px 0;
  }

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

@media (max-width: 480px) {
  .hero__title {
    font-size: 1.7rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .btn--lg {
    width: 100%;
    justify-content: center;
  }

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

  .contact-form {
    padding: 24px;
  }
}