/* ==========================================================================
   Metalix Romania — design system
   Brand palette sampled from metalix.net (kept identical); layout modernized.
   ========================================================================== */

:root {
  --color-primary: #d62027;
  --color-primary-dark: #b22513;
  --color-primary-darker: #8f1c0f;
  --color-ink: #222222;
  --color-black: #111111;
  --color-blue: #3d8dcb;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #e1e1e1;
  --color-gray-300: #b0b0b1;
  --color-gray-500: #898989;
  --color-white: #ffffff;

  --font-base: "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container-w: 1200px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 2px 10px rgba(17, 17, 17, 0.06);
  --shadow-md: 0 10px 30px rgba(17, 17, 17, 0.1);
  --shadow-lg: 0 20px 50px rgba(17, 17, 17, 0.16);

  --transition: 0.25s ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-ink);
  background: var(--color-white);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }

h1, h2, h3, h4 {
  font-weight: 900;
  line-height: 1.2;
  margin: 0 0 0.5em;
  color: var(--color-black);
}
h1 { font-size: clamp(2rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 1em; }

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

.section { padding: 72px 0; }
.section--tight { padding: 48px 0; }
.section--alt { background: var(--color-gray-100); }
.section--tint {
  background: linear-gradient(135deg, rgba(214, 32, 39, 0.05), rgba(61, 141, 203, 0.06));
}

.section-head { max-width: 700px; margin: 0 auto 48px; text-align: center; }
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 10px;
}
.section-head p { color: var(--color-gray-500); font-size: 1.05rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 8px 20px rgba(214, 32, 39, 0.35);
}
.btn-primary:hover { background: var(--color-primary-dark); color: var(--color-white); }
.btn-outline {
  background: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}
.btn-outline:hover { background: var(--color-white); color: var(--color-ink); }
.btn-outline-dark {
  background: transparent;
  border-color: var(--color-ink);
  color: var(--color-ink);
}
.btn-outline-dark:hover { background: var(--color-ink); color: var(--color-white); }
.btn-dark {
  background: var(--color-ink);
  color: var(--color-white);
}
.btn-dark:hover { background: var(--color-black); color: var(--color-white); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-gray-200);
  transition: box-shadow var(--transition);
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 24px;
  max-width: var(--container-w);
  margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 60px; width: auto; }
.brand-text { line-height: 1.1; }
.brand-text strong { display: block; font-size: 1.15rem; color: var(--color-black); font-weight: 900; }
.brand-text span { display: block; font-size: 0.72rem; color: var(--color-primary); font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--color-ink);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}
.main-nav a:hover, .main-nav a.is-active { background: var(--color-gray-100); color: var(--color-primary); }
.main-nav a.btn-primary:hover { background: var(--color-primary-dark); }

.dropdown { position: relative; }
.dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-ink);
  font-family: var(--font-base);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}
.dropdown-toggle:hover { background: var(--color-gray-100); color: var(--color-primary); }
.dropdown-toggle svg { width: 12px; height: 12px; transition: transform var(--transition); }
.dropdown.is-open .dropdown-toggle svg { transform: rotate(180deg); }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.dropdown-menu a { display: block; padding: 10px 12px; border-radius: var(--radius-sm); font-size: 0.9rem; }
.dropdown.is-open .dropdown-menu,
.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span { width: 26px; height: 3px; background: var(--color-ink); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  background: var(--color-gray-100);
  padding: 14px 0;
  font-size: 0.85rem;
  color: var(--color-gray-500);
}
.breadcrumb a { color: var(--color-gray-500); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb strong { color: var(--color-ink); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(1100px 480px at 88% -15%, rgba(214, 32, 39, 0.1), transparent),
              linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-100) 100%);
  color: var(--color-ink);
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--color-gray-200);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero h1 { color: var(--color-black); font-size: clamp(1.7rem, 3.2vw, 2.5rem); margin-bottom: 14px; }
.hero p.lead { font-size: 1.05rem; color: var(--color-gray-500); max-width: 520px; margin-bottom: 0; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 22px; }
.hero-stats {
  display: flex;
  gap: 28px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--color-gray-200);
  flex-wrap: wrap;
}
.hero-stat strong { display: block; font-size: 1.4rem; font-weight: 900; color: var(--color-black); }
.hero-stat span { font-size: 0.72rem; color: var(--color-gray-500); text-transform: uppercase; letter-spacing: 0.05em; }

.hero-art {
  position: relative;
  aspect-ratio: 3 / 2;
  max-width: 460px;
  margin: 0 auto;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-lg);
}
.hero-art img { width: 100%; height: 100%; object-fit: cover; display: block; }

.hero-art-graphic {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 260px;
  margin: 0 auto;
  border-radius: 24px;
  background: linear-gradient(155deg, rgba(214, 32, 39, 0.08), rgba(61, 141, 203, 0.08));
  border: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-art-graphic svg { width: 65%; height: 65%; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: linear-gradient(180deg, var(--color-gray-100), var(--color-white));
  color: var(--color-ink);
  padding: 56px 0;
  border-bottom: 1px solid var(--color-gray-200);
}
.page-hero h1 { color: var(--color-black); margin-bottom: 8px; }
.page-hero p { color: var(--color-gray-500); max-width: 640px; font-size: 1.05rem; }
.page-hero-inner { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.page-hero-icon-badge {
  flex: none;
  width: 64px;
  height: 64px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}
.page-hero-icon-badge img { width: 38px; height: 38px; object-fit: contain; }

/* ---------- Feature icon hero (fallback visual for features with no screenshot) ---------- */
.feature-icon-hero {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  background: linear-gradient(135deg, rgba(214, 32, 39, 0.06), rgba(61, 141, 203, 0.08));
}
.feature-icon-hero img { width: 120px; height: 120px; object-fit: contain; }

/* ---------- Video preview shot (thumbnail from Metalix demo videos) ---------- */
.shot-caption { font-size: 0.85rem; color: var(--color-gray-500); text-align: center; margin: 10px 0 0; }
.video-embed-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-200);
  background: var(--color-black);
}
.video-embed-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }

/* ---------- Product / card grid ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 28px;
}
.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.card.has-photo { padding: 0 0 26px; overflow: hidden; }
.card-photo { width: 100%; height: 140px; object-fit: cover; display: block; }
.card.has-photo .card-icon,
.card.has-photo h3,
.card.has-photo p,
.card.has-photo .card-link { margin-left: 26px; margin-right: 26px; }
.card.has-photo .card-icon { margin-top: 20px; }
.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(214, 32, 39, 0.1);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.card-icon svg { width: 28px; height: 28px; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--color-gray-500); font-size: 0.95rem; margin-bottom: 14px; }
.card-link { font-weight: 700; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 6px; }
.card-link:after { content: "\2192"; transition: transform var(--transition); }
.card-link:hover:after { transform: translateX(4px); }

/* ---------- Feature list ---------- */
.feature-list { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.feature-item { display: flex; gap: 14px; align-items: flex-start; }
.feature-dot {
  flex: none;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; font-weight: 900;
}
.feature-item h4 { margin: 0 0 4px; font-size: 1rem; font-weight: 700; }
.feature-item p { margin: 0; font-size: 0.92rem; color: var(--color-gray-500); }

/* ---------- Feature detail pages (Phase 2) ---------- */
.feature-body ul { padding-left: 1.2em; }
.feature-body li { margin-bottom: 6px; }
.feature-body h3 { margin-top: 1.4em; }
.feature-subnav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}
.feature-subnav a {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--color-gray-200);
  color: var(--color-ink);
  font-size: 0.88rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.feature-subnav a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.feature-subnav a.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
}
.feature-icon-img {
  flex: none;
  width: 44px; height: 44px;
  object-fit: contain;
  border-radius: 10px;
  background: var(--color-gray-100);
  padding: 6px;
}

/* ---------- Product / solution photos ---------- */
.product-shot {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-200);
}
.product-shot img { width: 100%; height: auto; display: block; transition: transform 0.5s ease; }
.product-shot:hover img,
.hero-art:hover img { transform: scale(1.04); }
.photo-banner {
  grid-column: 1 / -1;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
}
.photo-banner img { width: 100%; height: 280px; object-fit: cover; display: block; transition: transform 0.5s ease; }
.photo-banner:hover img { transform: scale(1.04); }
.photo-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  background: var(--color-white);
}
.photo-card img { width: 100%; height: 150px; object-fit: cover; display: block; }
.photo-card-body { padding: 14px 16px; }
.photo-card-body span { font-size: 0.85rem; font-weight: 700; color: var(--color-ink); }
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.tech-chip { text-align: center; }
.tech-chip img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-gray-200);
  margin-bottom: 6px;
}
.tech-chip span { font-size: 0.78rem; color: var(--color-gray-500); font-weight: 500; }
.solution-photo {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-gray-200);
  margin-top: 14px;
  max-width: 420px;
}

/* ---------- Screenshot gallery ---------- */
.shot-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
  margin-top: 28px;
}
.shot-gallery figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
  background: var(--color-white);
  transition: box-shadow var(--transition), transform var(--transition);
}
.shot-gallery figure:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.shot-gallery img { width: 100%; height: 200px; object-fit: cover; display: block; }
.shot-gallery figcaption { padding: 12px 16px; font-size: 0.88rem; font-weight: 700; color: var(--color-ink); }

/* ---------- Stats strip ---------- */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat strong { display: block; font-size: 2.2rem; font-weight: 900; color: var(--color-primary); }
.stat span { color: var(--color-gray-500); font-size: 0.9rem; }

/* ---------- Partners strip ---------- */
.partners-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 56px;
  flex-wrap: wrap;
  opacity: 0.75;
}
.partners-strip img { max-height: 42px; width: auto; filter: grayscale(100%); transition: filter var(--transition), opacity var(--transition); }
.partners-strip img:hover { filter: grayscale(0%); opacity: 1; }

/* ---------- Testimonial carousel ---------- */
.testimonial-carousel { position: relative; max-width: 780px; margin: 0 auto; }
.testimonial-track { overflow: hidden; }
.testimonial-slides { display: flex; transition: transform 0.5s ease; }
.testimonial-slide { flex: 0 0 100%; padding: 8px; text-align: center; }
.testimonial-slide blockquote {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-ink);
  margin: 0 0 20px;
  line-height: 1.5;
}
.testimonial-cite { color: var(--color-primary); font-weight: 700; }
.testimonial-cite span { display: block; color: var(--color-gray-500); font-weight: 400; font-size: 0.85rem; }
.testimonial-nav { display: flex; justify-content: center; gap: 10px; margin-top: 24px; }
.testimonial-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--color-gray-300);
  border: none; cursor: pointer; padding: 0;
  transition: background var(--transition), transform var(--transition);
}
.testimonial-dot.is-active { background: var(--color-primary); transform: scale(1.3); }

/* ---------- Testimonials grid (full page) ---------- */
.testimonial-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.testimonial-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 26px;
}
.testimonial-card .machine { display: inline-block; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-blue); margin-bottom: 10px; }
.testimonial-card p.quote { font-style: italic; color: var(--color-ink); }
.testimonial-card .cite { font-weight: 700; font-size: 0.9rem; color: var(--color-primary); }
.testimonial-card.is-local { border-color: var(--color-primary); box-shadow: 0 0 0 1px var(--color-primary) inset; }
.badge-ro {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

/* ---------- News ---------- */
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 26px; }
.news-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.news-card-body { padding: 24px; }
.news-date {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}
.news-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.news-card p { color: var(--color-gray-500); font-size: 0.92rem; }

/* ---------- Solutions list ---------- */
.solution-row {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-gray-200);
  align-items: start;
}
.solution-row:last-child { border-bottom: none; }
.solution-num { font-size: 1.6rem; font-weight: 900; color: var(--color-gray-200); }
.solution-row h3 { margin-bottom: 6px; }
.solution-row p { color: var(--color-gray-500); margin: 0; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-card {
  background: var(--color-white);
  color: var(--color-ink);
  border-radius: var(--radius);
  padding: 36px;
  border: 1px solid var(--color-gray-200);
  border-top: 4px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
}
.contact-card h3 { color: var(--color-black); }
.contact-line { display: flex; gap: 12px; margin-bottom: 16px; align-items: flex-start; }
.contact-line svg { flex: none; width: 20px; height: 20px; color: var(--color-primary); margin-top: 2px; }
.contact-line span { color: var(--color-gray-500); font-size: 0.95rem; }

.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-size: 0.85rem; font-weight: 700; margin-bottom: 6px; }
.form-field input, .form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  font-family: var(--font-base);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: var(--color-primary); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-note { font-size: 0.82rem; color: var(--color-gray-500); margin-top: 8px; }
.form-status { font-size: 0.88rem; font-weight: 700; margin-top: 14px; }
.form-status.is-success { color: var(--color-blue); }
.form-status.is-error { color: var(--color-primary); }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-black); color: var(--color-gray-300); padding: 64px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 48px; }
.footer-brand img { height: 60px; margin-bottom: 14px; }
.footer-brand p { font-size: 0.9rem; color: var(--color-gray-500); max-width: 280px; }
.footer-col h4 { color: var(--color-white); font-size: 0.95rem; margin-bottom: 16px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--color-gray-300); font-size: 0.9rem; }
.footer-col a:hover { color: var(--color-white); }
.footer-social { display: flex; gap: 12px; margin-top: 18px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-gray-500);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-gray-300);
}
.footer-social a:hover { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.footer-bottom {
  border-top: 1px solid #333;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--color-gray-500);
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 90;
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------- Scroll reveal ---------- */
/* Hidden-until-revealed state only applies once JS confirms it can reveal it again (see main.js). Without JS, content stays fully visible. */
.js-reveal-ready [data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
[data-reveal].in-view { opacity: 1; transform: translateY(0); }

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { max-width: 320px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .photo-banner img { height: 200px; }
}

@media (max-width: 780px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    inset: 70px 0 0 0;
    flex: none;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: 20px;
    gap: 6px;
    transform: translateX(100%);
    transition: transform var(--transition);
    overflow-y: auto;
  }
  .main-nav.is-open { transform: translateX(0); }
  .main-nav a { padding: 14px 16px; border-bottom: 1px solid var(--color-gray-200); border-radius: 0; }
  .dropdown { width: 100%; }
  .dropdown-toggle { width: 100%; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--color-gray-200); }
  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
    padding: 0 0 0 16px;
  }
  .dropdown.is-open .dropdown-menu { display: block; }
  body.nav-open { overflow: hidden; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .form-row { grid-template-columns: 1fr; }
  .solution-row { grid-template-columns: 1fr; }
  .solution-num { display: none; }
}

@media (max-width: 520px) {
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 90px 0 60px; }
  .section { padding: 56px 0; }
}