/* ─────────────────────────────────────────
   RESET & BASE
───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green-dark:  #1a3a2a;
  --green-mid:   #2d5a3d;
  --green-light: #4a8c5c;
  --green-pale:  #e8f4ed;
  --wood:        #8b6b47;
  --wood-light:  #c4a882;
  --cream:       #faf8f4;
  --white:       #ffffff;
  --gray-100:    #f5f4f0;
  --gray-200:    #e8e6e0;
  --gray-500:    #8a8680;
  --gray-700:    #4a4742;
  --gray-900:    #1c1b18;
  --accent:      #5aab6e;

  --font-body:   'Inter', sans-serif;
  --font-head:   'Playfair Display', serif;

  --radius-sm:   8px;
  --radius-md:   16px;
  --radius-lg:   24px;
  --radius-xl:   40px;

  --shadow-sm:   0 2px 8px rgba(0,0,0,.06);
  --shadow-md:   0 8px 32px rgba(0,0,0,.10);
  --shadow-lg:   0 20px 60px rgba(0,0,0,.14);

  --transition:  .3s cubic-bezier(.4,0,.2,1);
}

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

body {
  font-family: var(--font-body);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 100px 0; }

/* ─────────────────────────────────────────
   SECTION HEADER
───────────────────────────────────────── */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}
.section-tag {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--green-light);
  background: var(--green-pale);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.section-tag.light {
  color: var(--green-pale);
  background: rgba(255,255,255,.15);
}
.section-header h2 {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: 16px;
}
.section-header p {
  color: var(--gray-500);
  font-size: 1.05rem;
}

/* ─────────────────────────────────────────
   BUTTONS
───────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green-mid);
  color: var(--white);
  padding: 14px 28px;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: .95rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary:hover { background: var(--green-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-primary.full { width: 100%; justify-content: center; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--white);
  padding: 13px 28px;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: .95rem;
  border: 2px solid rgba(255,255,255,.5);
  cursor: pointer;
  transition: var(--transition);
}
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,.1); }

.btn-nav {
  display: inline-flex;
  align-items: center;
  background: var(--green-mid);
  color: var(--white);
  padding: 10px 22px;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: .875rem;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-nav:hover { background: var(--green-dark); }

/* ── Nav Partner Badge ── */
.nav-partner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-left: 1px solid rgba(255,255,255,.2);
  margin-left: 8px;
  transition: var(--transition);
}
.nav-wrap.scrolled .nav-partner { border-color: var(--gray-200); }
.nav-partner-label {
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
  white-space: nowrap;
  transition: var(--transition);
}
.nav-wrap.scrolled .nav-partner-label { color: var(--gray-500); }
.nav-partner-logo {
  height: 28px;
  width: auto;
  object-fit: contain;
  border-radius: 4px;
  background: var(--white);
  padding: 3px 6px;
}

/* ── Hero Partner Badge ── */
.hero-partner-badge {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  margin-bottom: 28px;
}
.hero-badge-logo {
  object-fit: contain;
  display: block;
}
.hero-badge-logo.modopan {
  height: 36px;
  width: auto;
  filter: brightness(0) invert(1);
}
.hero-badge-logo.naturheld {
  height: 32px;
  width: auto;
  border-radius: 4px;
  background: var(--white);
  padding: 3px 8px;
}
.hero-badge-divider {
  width: 1px;
  height: 36px;
  background: rgba(255,255,255,.25);
  flex-shrink: 0;
}
.hero-badge-right {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.hero-badge-label {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.7);
}

/* ── Footer Partner ── */
.footer-partner {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.footer-partner-label {
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
}
.footer-partner-logo {
  height: 32px;
  width: auto;
  object-fit: contain;
  border-radius: 4px;
  background: var(--white);
  padding: 4px 10px;
  align-self: flex-start;
}

/* ── Language Switcher ── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.12);
  border: 1.5px solid rgba(255,255,255,.25);
  color: var(--white);
  padding: 7px 14px;
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: .04em;
  white-space: nowrap;
}
.lang-switcher:hover {
  background: rgba(255,255,255,.22);
  border-color: rgba(255,255,255,.5);
}
.nav-wrap.scrolled .lang-switcher {
  background: var(--green-pale);
  border-color: var(--green-pale);
  color: var(--green-dark);
}
.nav-wrap.scrolled .lang-switcher:hover {
  background: var(--green-mid);
  border-color: var(--green-mid);
  color: var(--white);
}
.lang-flag  { font-size: 1rem; line-height: 1; }
.lang-label { font-size: .78rem; font-weight: 700; }

.btn-product {
  display: inline-flex;
  align-items: center;
  background: var(--green-pale);
  color: var(--green-dark);
  padding: 10px 20px;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: .85rem;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-product:hover { background: var(--green-mid); color: var(--white); }

/* ─────────────────────────────────────────
   NAVIGATION
───────────────────────────────────────── */
.nav-wrap {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: var(--transition);
  padding: 20px 0;
}
.nav-wrap.scrolled {
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  padding: 12px 0;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.logo { display: flex; align-items: center; }

.logo-img {
  height: 52px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
  transition: filter var(--transition);
}
.nav-wrap.scrolled .logo-img {
  filter: none;
}

.footer-logo-img {
  height: 56px;
  filter: brightness(0) invert(1);
  opacity: .85;
}

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: rgba(255,255,255,.85);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--green-light);
  transition: width var(--transition);
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { width: 100%; }

.nav-wrap.scrolled .nav-links a { color: var(--gray-700); }
.nav-wrap.scrolled .nav-links a:hover { color: var(--green-dark); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-wrap.scrolled .hamburger span { background: var(--gray-900); }

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

/* ── Slideshow ── */
.hero-slides {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 1.2s ease, transform 6s ease;
  will-change: opacity, transform;
}
.hero-slide.active {
  opacity: 1;
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(to right, rgba(5,20,12,.75) 0%, rgba(5,20,12,.4) 60%, rgba(5,20,12,.2) 100%),
    linear-gradient(to top,   rgba(5,20,12,.5) 0%, transparent 50%);
}

/* ── Dots ── */
.hero-dots {
  position: absolute;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}
.hero-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,.35);
  cursor: pointer;
  transition: background var(--transition), width var(--transition);
  padding: 0;
}
.hero-dot.active {
  background: var(--white);
  width: 28px;
  border-radius: 4px;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 80px;
  max-width: 700px;
  margin-left: 10%;
}
.hero-naturheld-logo {
  height: 70px;
  width: auto;
  object-fit: contain;
  margin-bottom: 20px;
  filter: brightness(0) invert(1);
  opacity: .9;
  display: block;
}

.hero-tag {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(90,171,110,.15);
  border: 1px solid rgba(90,171,110,.3);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
}
.hero-content h1 {
  font-family: var(--font-head);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 24px;
}
.hero-content h1 em {
  font-style: italic;
  color: var(--accent);
}
.hero-content p {
  font-size: 1.15rem;
  color: rgba(255,255,255,.75);
  margin-bottom: 40px;
  max-width: 520px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.5);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  z-index: 2;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,.5), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: .5; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.1); }
}

/* ─────────────────────────────────────────
   STATS BAR
───────────────────────────────────────── */
.stats-bar {
  background: var(--green-dark);
  padding: 28px 0;
}
.stats-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 48px;
  flex: 1;
  min-width: 120px;
}
.stat strong {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}
.stat span {
  font-size: .78rem;
  color: rgba(255,255,255,.55);
  margin-top: 6px;
  text-align: center;
  letter-spacing: .02em;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,.12);
  flex-shrink: 0;
}

/* ─────────────────────────────────────────
   PRODUCTS
───────────────────────────────────────── */
.products-section { background: var(--cream); }

.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card.wide {
  grid-column: span 2;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.product-img {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--gray-100);
}
.product-card.wide .product-img { height: 220px; }

.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
  display: block;
}
.product-card:hover .product-img img { transform: scale(1.05); }

/* Placeholder gradients simulating nature/wood images */
.product-img-placeholder {
  width: 100%; height: 100%;
  transition: transform .6s ease;
}
.product-card:hover .product-img-placeholder { transform: scale(1.05); }

.forest  { background: linear-gradient(135deg, #1a3a2a 0%, #2d5a3d 50%, #4a8c5c 100%); }
.wood    { background: linear-gradient(135deg, #5c3d1e 0%, #8b6b47 50%, #c4a882 100%); }
.bark    { background: linear-gradient(135deg, #2d1f0f 0%, #6b4e2a 50%, #a07850 100%); }
.moss    { background: linear-gradient(135deg, #1e3a1e 0%, #3d6b3d 50%, #6b9c5a 100%); }
.flex    { background: linear-gradient(135deg, #1a2a3a 0%, #2d4a5a 50%, #4a7a8c 100%); }
.forest2 { background: linear-gradient(160deg, #0d2318 0%, #1a3a2a 40%, #3d7a52 100%); }
.bark2   { background: linear-gradient(160deg, #3d2a1a 0%, #6b4e2a 60%, #a07850 100%); }

/* overlay texture on placeholders */
.product-img-placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Crect x='0' y='0' width='1' height='40'/%3E%3Crect x='0' y='0' width='40' height='1'/%3E%3C/g%3E%3C/svg%3E");
}

.product-badge {
  position: absolute;
  top: 16px; left: 16px;
  background: var(--green-mid);
  color: var(--white);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 100px;
}
.product-badge.premium { background: var(--wood); }
.product-badge.flex-badge { background: #2d4a5a; }

.product-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-brand {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--green-light);
  margin-bottom: 8px;
}
.product-body h3 {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 10px;
  line-height: 1.3;
}
.product-body > p {
  font-size: .875rem;
  color: var(--gray-500);
  margin-bottom: 16px;
  line-height: 1.6;
  flex: 1;
}

.product-specs {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
  padding: 14px;
  background: var(--gray-100);
  border-radius: var(--radius-sm);
}
.product-specs li {
  display: flex;
  justify-content: space-between;
  font-size: .8rem;
}
.product-specs li span { color: var(--gray-500); }
.product-specs li strong { color: var(--gray-900); }

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.product-price {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--green-dark);
}
.product-price small {
  font-family: var(--font-body);
  font-size: .75rem;
  font-weight: 400;
  color: var(--gray-500);
}

/* ─────────────────────────────────────────
   WHY SECTION
───────────────────────────────────────── */
.why-section {
  position: relative;
  overflow: hidden;
  background: var(--green-dark);
  padding: 100px 0;
}
.why-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 0% 100%, rgba(74,140,92,.2) 0%, transparent 50%),
    radial-gradient(circle at 100% 0%, rgba(45,90,61,.3) 0%, transparent 50%);
}

.why-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.why-text .section-tag { margin-bottom: 16px; }
.why-text h2 {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 20px;
}
.why-text > p {
  color: rgba(255,255,255,.7);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 40px;
}

.why-features { display: flex; flex-direction: column; gap: 24px; }
.feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.feature-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.08);
  border-radius: var(--radius-sm);
}
.feature h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 4px;
}
.feature p {
  font-size: .875rem;
  color: rgba(255,255,255,.6);
  line-height: 1.6;
}

.why-visual {
  position: relative;
  height: 480px;
}
.why-card-main {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 60px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.why-card-inner { width: 100%; height: 100%; }
.why-card-label {
  position: absolute;
  bottom: 20px; left: 20px;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
}
.why-card-label strong { color: var(--white); font-size: .95rem; }
.why-card-label span { color: rgba(255,255,255,.6); font-size: .75rem; }

.why-card-small {
  position: absolute;
  right: -24px;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  box-shadow: var(--shadow-md);
}
.why-card-small.top { top: 40px; }
.why-card-small.bottom { bottom: 100px; }
.why-badge {
  font-size: .85rem;
  font-weight: 600;
  color: var(--green-dark);
  white-space: nowrap;
}

/* ─────────────────────────────────────────
   ABOUT
───────────────────────────────────────── */
.about-section { background: var(--white); }
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 500px;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.about-img {
  width: 100%; height: 100%;
}
.about-img-wrap::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 40%;
  background: linear-gradient(to top, rgba(13,35,24,.6), transparent);
  pointer-events: none;
}

.about-text .section-tag { margin-bottom: 16px; }
.about-text h2 {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 20px;
}
.about-text p {
  color: var(--gray-500);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 16px;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}
.about-tags span {
  background: var(--green-pale);
  color: var(--green-dark);
  font-size: .8rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 100px;
}

/* ─────────────────────────────────────────
   CALCULATOR
───────────────────────────────────────── */
.calc-section { background: var(--gray-100); }

.calc-step {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}
.calc-step-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--gray-900);
  margin-bottom: 24px;
}
.calc-step-label span {
  width: 32px; height: 32px;
  background: var(--green-mid);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* Series grid */
.calc-series-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.calc-series-card {
  background: var(--cream);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 20px 14px;
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.calc-series-card:hover {
  border-color: var(--green-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}
.calc-series-card.active {
  border-color: var(--green-mid);
  background: var(--green-pale);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.calc-series-card strong {
  font-size: .95rem;
  font-weight: 700;
  color: var(--green-dark);
  display: block;
}
.calc-series-card span {
  font-size: .75rem;
  color: var(--gray-500);
  display: block;
}
.calc-series-card em {
  font-size: .72rem;
  font-style: normal;
  color: var(--gray-500);
  display: block;
  margin-top: 2px;
}
.calc-series-card.active strong { color: var(--green-dark); }

/* Variant select */
.calc-select {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: .9rem;
  color: var(--gray-900);
  background: var(--white);
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238a8680' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.calc-select:focus { border-color: var(--green-mid); box-shadow: 0 0 0 3px rgba(45,90,61,.1); }

.calc-unit-info {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.calc-unit-info span {
  background: var(--green-pale);
  color: var(--green-dark);
  font-size: .8rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 100px;
}

/* Inputs row */
.calc-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 16px;
  align-items: flex-end;
}
.calc-input-group { display: flex; flex-direction: column; gap: 8px; }
.calc-input-group label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--gray-700);
}
.calc-input-group input, .calc-input-group select {
  padding: 13px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: .95rem;
  color: var(--gray-900);
  outline: none;
  transition: border-color var(--transition);
  appearance: none;
}
.calc-input-group input:focus, .calc-input-group select:focus {
  border-color: var(--green-mid);
  box-shadow: 0 0 0 3px rgba(45,90,61,.1);
}
.calc-input-group select {
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238a8680' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
  background-color: var(--white);
}

/* Result box */
.calc-result {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--green-pale);
  margin-top: 8px;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .4s ease, transform .4s ease;
  pointer-events: none;
}
.calc-result.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.calc-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.calc-result-product {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--green-dark);
}
.calc-result-badge {
  background: var(--green-pale);
  color: var(--green-dark);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 100px;
}

.calc-result-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.calc-stat {
  background: var(--gray-100);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.calc-stat span {
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--gray-500);
}
.calc-stat strong {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gray-900);
}
.calc-stat.highlight {
  background: var(--green-pale);
  border: 1.5px solid rgba(74,140,92,.2);
}
.calc-stat.highlight.green strong { color: var(--green-dark); font-size: 1.4rem; }

.calc-note {
  font-size: .75rem;
  color: var(--gray-500);
  line-height: 1.6;
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
}

@media (max-width: 1024px) {
  .calc-series-grid { grid-template-columns: repeat(3, 1fr); }
  .calc-result-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .calc-series-grid { grid-template-columns: repeat(2, 1fr); }
  .calc-inputs { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .calc-series-grid { grid-template-columns: 1fr 1fr; }
  .calc-result-grid { grid-template-columns: 1fr 1fr; }
}

/* ─────────────────────────────────────────
   DOWNLOADS
───────────────────────────────────────── */
.downloads-section { background: var(--white); }

.downloads-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.dl-card.wide { grid-column: span 2; }

.dl-card {
  background: var(--cream);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.dl-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--green-light);
}

.dl-icon {
  font-size: 2rem;
  width: 52px; height: 52px;
  background: var(--green-pale);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.dl-body { flex: 1; }

.dl-lang {
  display: flex;
  gap: 4px;
  margin-bottom: 10px;
}
.dl-flag {
  font-size: 1.1rem;
  line-height: 1;
}

.dl-body h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 6px;
  line-height: 1.4;
}
.dl-body p {
  font-size: .825rem;
  color: var(--gray-500);
  line-height: 1.6;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green-mid);
  color: var(--white);
  padding: 10px 18px;
  border-radius: var(--radius-xl);
  font-size: .85rem;
  font-weight: 600;
  transition: var(--transition);
  align-self: flex-start;
  white-space: nowrap;
}
.btn-download:hover {
  background: var(--green-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.btn-download svg { flex-shrink: 0; }

@media (max-width: 1024px) {
  .downloads-grid { grid-template-columns: repeat(2, 1fr); }
  .dl-card.wide { grid-column: span 2; }
}
@media (max-width: 600px) {
  .downloads-grid { grid-template-columns: 1fr; }
  .dl-card.wide { grid-column: span 1; }
}

/* ─────────────────────────────────────────
   CONTACT
───────────────────────────────────────── */
.contact-section { background: var(--cream); }

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 16px; }

.contact-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
}
.contact-card.regional {
  flex-direction: column;
  gap: 16px;
}
.contact-card.regional h4 {
  font-size: .95rem;
  font-weight: 600;
  color: var(--gray-900);
}
.contact-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.contact-card h4 {
  font-size: .85rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.contact-card p, .contact-card a {
  font-size: .95rem;
  color: var(--gray-900);
  line-height: 1.5;
}
.contact-card a:hover { color: var(--green-mid); text-decoration: underline; }

.regional-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 12px;
  border-left: 3px solid var(--green-pale);
}
.regional-item strong { font-size: .875rem; color: var(--gray-900); }
.regional-item span { font-size: .8rem; color: var(--gray-500); }
.regional-item a { font-size: .875rem; color: var(--green-mid); font-weight: 600; }

/* ─── FORM ─── */
.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.form-group label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--gray-700);
  letter-spacing: .03em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: .9rem;
  color: var(--gray-900);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--green-mid);
  box-shadow: 0 0 0 3px rgba(45,90,61,.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238a8680' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}
.form-note {
  text-align: center;
  font-size: .8rem;
  color: var(--gray-500);
  margin-top: 12px;
}

/* ─────────────────────────────────────────
   FOOTER
───────────────────────────────────────── */
.footer {
  background: var(--gray-900);
  color: var(--white);
  padding: 64px 0 0;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer-logo { display: block; margin-bottom: 16px; }
.footer-brand p {
  font-size: .875rem;
  color: rgba(255,255,255,.5);
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 260px;
}
.social-links {
  display: flex;
  gap: 12px;
}
.social-links a {
  width: 40px; height: 40px;
  background: rgba(255,255,255,.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.6);
  transition: var(--transition);
}
.social-links a:hover {
  background: var(--green-mid);
  color: var(--white);
}

.footer-col h5 {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
  margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  font-size: .875rem;
  color: rgba(255,255,255,.65);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 24px;
  text-align: center;
}
.footer-bottom p {
  font-size: .78rem;
  color: rgba(255,255,255,.3);
}

/* ─────────────────────────────────────────
   ANIMATIONS
───────────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────── */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .product-card.wide { grid-column: span 2; }
  .why-inner { grid-template-columns: 1fr; gap: 48px; }
  .why-visual { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }

  .nav-links, .btn-nav { display: none; }
  .hamburger { display: flex; }

  /* Mobile nav open */
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: var(--green-dark);
    z-index: 200;
    align-items: center;
    justify-content: center;
    gap: 32px;
  }
  .nav-links.open a {
    font-size: 1.5rem;
    color: var(--white);
  }

  .hero-content { margin-left: 0; padding: 120px 24px 80px; }
  .stats-inner { gap: 0; }
  .stat { padding: 12px 24px; min-width: 100px; }
  .stat-divider { display: none; }

  .products-grid { grid-template-columns: 1fr; }
  .product-card.wide { grid-column: span 1; }

  .about-inner { grid-template-columns: 1fr; gap: 40px; }
  .about-img-wrap { height: 300px; }

  .contact-inner { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }

  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions a { width: 100%; text-align: center; justify-content: center; }
}