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

:root {
  --green-500: #3fa034;
  --green-600: #348a2c;
  --green-700: #2d7826;
  --green-900: #143d10;
  --dark-950: #0a0a0a;
  --dark-900: #111111;
  --dark-800: #1a1a1a;
  --dark-700: #222222;
  --dark-600: #2a2a2a;
  --dark-500: #333333;
  --gray-400: #9ca3af;
  --gray-300: #d1d5db;
  --gray-200: #e5e7eb;
  --gray-100: #f3f4f6;
  --white: #ffffff;
  --amber-400: #f59e0b;
  --red-400: #ef4444;
  --whatsapp: #25D366;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --shadow-glow: 0 0 40px rgba(46, 204, 113, 0.15);
}

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

body {
  font-family: var(--font-sans);
  color: var(--dark-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.btn-primary {
  background: var(--green-500);
  color: var(--dark-950);
  box-shadow: 0 0 0 0 rgba(46, 204, 113, 0), var(--shadow-md);
}
.btn-primary:hover {
  background: var(--green-600);
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(46, 204, 113, 0.3), var(--shadow-lg);
}

.btn-glass {
  background: rgba(255,255,255,0.1);
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
}
.btn-glass:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.3);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.8rem;
  background: var(--green-500);
  color: var(--dark-950);
}
.btn-sm:hover {
  background: var(--green-600);
}

.btn-lg {
  padding: 18px 36px;
  font-size: 1rem;
}

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

.btn-whatsapp {
  background: var(--whatsapp);
  color: var(--white);
}
.btn-whatsapp:hover {
  background: #20BD5A;
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(37, 211, 102, 0.3);
}

/* ========== ANNOUNCEMENT BAR ========== */
.announcement-bar {
  background: var(--dark-950);
  color: var(--white);
  text-align: center;
  padding: 10px 24px;
  font-size: 0.85rem;
  letter-spacing: 0.01em;
  font-weight: 400;
}
.announcement-bar strong {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--green-500);
}
.announcement-bar a {
  color: var(--green-500);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  margin-left: 6px;
}
.announcement-bar a:hover { color: var(--white); }

/* ========== NAVIGATION ========== */
.nav {
  position: fixed;
  top: var(--bar-h, 44px);
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 4px 0;
  transition: top 0.25s ease, background 0.3s ease, padding 0.3s ease, box-shadow 0.3s ease;
  background: var(--green-500);
}
.nav.scrolled {
  top: 0;
  background: var(--green-500);
  padding: 4px 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-img {
  height: 88px;
  width: auto;
  display: block;
  transition: height 0.3s ease;
}
.nav.scrolled .logo-img { height: 88px; }
.footer-brand .logo-img { height: 140px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  color: rgba(255,255,255,0.92);
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.2s;
  letter-spacing: -0.01em;
}
.nav-links a:hover { color: var(--white); text-decoration: underline; text-underline-offset: 4px; }
.nav-cta {
  background: var(--white) !important;
  color: var(--green-700) !important;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-weight: 700 !important;
  text-decoration: none !important;
}
.nav-cta:hover { background: var(--dark-950) !important; 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: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 180px 24px 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--dark-950);
}
.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10,10,10,0.7) 0%, rgba(10,10,10,0.5) 50%, rgba(10,10,10,0.8) 100%);
}
.hero-gradient {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--white), transparent);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(46, 204, 113, 0.1);
  border: 1px solid rgba(46, 204, 113, 0.2);
  border-radius: var(--radius-full);
  color: var(--green-500);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}
.hero-accent {
  background: linear-gradient(135deg, var(--green-500), #6ee7b7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.6);
  max-width: 580px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin-bottom: 40px;
}
.hero-stat { text-align: center; }
.stat-number {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
}
.stat-label {
  display: block;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.1);
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 2;
}
.hero-scroll-indicator span {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.3), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ========== TRUST BAR ========== */
.trust-bar {
  background: var(--gray-100);
  padding: 24px 0;
  border-bottom: 1px solid var(--gray-200);
}
.trust-items {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--dark-600);
  font-size: 0.85rem;
  font-weight: 600;
}
.trust-item svg { color: var(--green-600); flex-shrink: 0; }

/* ========== SECTION HEADERS ========== */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}
.section-header-light h2 { color: var(--white); }
.section-header-light p { color: rgba(255,255,255,0.6); }
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--green-600);
  margin-bottom: 16px;
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  color: var(--dark-800);
}
.section-header p {
  font-size: 1.05rem;
  color: #6b7280;
  line-height: 1.7;
}

/* ========== PRODUCTS ========== */
.products {
  padding: 100px 0;
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--green-500);
}
.product-image { position: relative; overflow: hidden; }
.product-placeholder {
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.product-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.product-card:hover .product-img {
  transform: scale(1.08);
}
.product-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--green-500);
  color: var(--dark-950);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.product-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.product-info p {
  font-size: 0.85rem;
  color: #6b7280;
  line-height: 1.6;
  margin-bottom: 16px;
}
.product-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-top: auto;
}
.product-price {
  font-size: 1rem;
  font-weight: 700;
  color: var(--green-700);
}
.products-cta { text-align: center; }
.products-note {
  margin-top: 12px;
  font-size: 0.85rem;
  color: #6b7280;
}

/* ========== WHY RENOVA ========== */
.why-renova {
  padding: 100px 0;
  background: var(--dark-950);
  background-image:
    radial-gradient(ellipse 50% 50% at 20% 50%, rgba(46, 204, 113, 0.05) 0%, transparent 50%);
}
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.benefit-card {
  padding: 36px 28px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}
.benefit-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(46, 204, 113, 0.2);
  transform: translateY(-2px);
}
.benefit-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(46, 204, 113, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  color: var(--green-500);
}
.benefit-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.benefit-card p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
}

/* ========== MATERIAL ========== */
.material {
  padding: 100px 0;
  background: var(--gray-100);
}
.material-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.material-brand {
  color: var(--green-600);
  font-family: var(--font-display);
}
.material h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
.material-lead {
  font-size: 1.05rem;
  color: #6b7280;
  margin-bottom: 32px;
  line-height: 1.7;
}
.material-specs {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.spec {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.spec-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(46, 204, 113, 0.1);
  border-radius: var(--radius-sm);
  color: var(--green-600);
  flex-shrink: 0;
}
.spec strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--dark-800);
}
.spec span {
  font-size: 0.8rem;
  color: #6b7280;
}

/* Material Comparison Card */
.material-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--gray-200);
}
.material-comparison {
  display: flex;
  gap: 24px;
  align-items: stretch;
}
.comparison-item {
  flex: 1;
  padding: 24px;
  border-radius: var(--radius-md);
}
.comparison-item h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.comparison-item ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.comparison-item li {
  font-size: 0.85rem;
  padding-left: 24px;
  position: relative;
}
.comparison-item li::before {
  position: absolute;
  left: 0;
  font-size: 0.9rem;
}
.comparison-bad {
  background: rgba(239, 68, 68, 0.05);
  border: 1px solid rgba(239, 68, 68, 0.1);
}
.comparison-bad h4 { color: var(--red-400); }
.comparison-bad li::before { content: "✗"; color: var(--red-400); }
.comparison-bad li { color: #6b7280; }

.comparison-good {
  background: rgba(46, 204, 113, 0.05);
  border: 1px solid rgba(46, 204, 113, 0.15);
}
.comparison-good h4 { color: var(--green-600); }
.comparison-good li::before { content: "✓"; color: var(--green-600); font-weight: 700; }
.comparison-good li { color: var(--dark-700); font-weight: 500; }

.comparison-divider {
  display: flex;
  align-items: center;
  justify-content: center;
}
.comparison-divider span {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ========== GALLERY ========== */
.gallery {
  padding: 100px 0;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: none;
  padding: 0;
  background: none;
  cursor: pointer;
  display: block;
  width: 100%;
  font: inherit;
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform 0.3s ease;
}
.gallery-item:hover { transform: scale(1.02); }
.gallery-large { grid-column: span 2; }
.gallery-placeholder {
  height: 280px;
  width: 100%;
  display: flex;
  align-items: flex-end;
  padding: 24px;
  position: relative;
  overflow: hidden;
  background: var(--dark-700);
}
.gallery-large .gallery-placeholder { height: 280px; }
.gallery-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.gallery-item:hover .gallery-img {
  transform: scale(1.08);
}
.gallery-placeholder span {
  position: relative;
  z-index: 2;
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(0,0,0,0.5);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(10px);
}

/* ========== TESTIMONIALS ========== */
.testimonials {
  padding: 100px 0;
  background: var(--dark-950);
}
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s ease;
}
.testimonial-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(46, 204, 113, 0.15);
}
.testimonial-stars {
  display: flex;
  gap: 2px;
  margin-bottom: 16px;
}
.testimonial-card p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(46, 204, 113, 0.15);
  color: var(--green-500);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
}
.testimonial-author strong {
  display: block;
  color: var(--white);
  font-size: 0.85rem;
}
.testimonial-author span {
  color: rgba(255,255,255,0.4);
  font-size: 0.75rem;
}

/* ========== SECTORS ========== */
.sectors {
  padding: 100px 0;
  background: var(--white);
}
.sector-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.sector-card {
  padding: 36px 28px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  text-align: center;
}
.sector-card:hover {
  border-color: var(--green-500);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.sector-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(46, 204, 113, 0.08);
  border-radius: var(--radius-md);
  color: var(--green-600);
}
.sector-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.sector-card p {
  font-size: 0.85rem;
  color: #6b7280;
  line-height: 1.6;
}

/* ========== ABOUT ========== */
.about {
  padding: 100px 0;
  background: var(--gray-100);
}
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.about-content p {
  font-size: 0.95rem;
  color: #4b5563;
  line-height: 1.7;
  margin-bottom: 16px;
}
.about-values {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.value {
  padding: 16px 20px;
  background: var(--white);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--green-500);
}
.value strong {
  display: block;
  font-size: 0.9rem;
  color: var(--dark-800);
  margin-bottom: 2px;
}
.value span {
  font-size: 0.8rem;
  color: #6b7280;
}
.about-image-placeholder {
  height: 100%;
  min-height: 400px;
  background: var(--dark-800);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.about-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-image-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,10,0.8) 0%, rgba(10,10,10,0.2) 50%, transparent 100%);
  z-index: 1;
}
.about-img-card {
  text-align: center;
  position: relative;
  z-index: 2;
  padding: 32px;
}
.about-img-card span {
  display: block;
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 4px;
}
.about-img-card small {
  color: rgba(255,255,255,0.7);
  font-size: 0.8rem;
}

/* ========== SUSTAINABILITY ========== */
.sustainability {
  padding: 100px 0;
  background: var(--green-900);
  color: var(--white);
  background-image:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(46, 204, 113, 0.15) 0%, transparent 50%);
}
.sustain-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.sustain-number-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.sustain-stat { text-align: center; }
.sustain-num {
  display: block;
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--green-500);
  letter-spacing: -0.03em;
}
.sustain-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.sustain-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}
.sustain-content p {
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  margin-bottom: 24px;
}
.sustainability .btn-primary {
  background: var(--white);
  color: var(--green-900);
}
.sustainability .btn-primary:hover {
  background: var(--gray-100);
}

/* ========== CTA BANNER ========== */
.cta-banner {
  padding: 80px 0;
  background: var(--dark-950);
  text-align: center;
  background-image:
    radial-gradient(ellipse 50% 80% at 50% 50%, rgba(46, 204, 113, 0.08) 0%, transparent 60%);
}
.cta-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  color: var(--white);
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-content p {
  color: rgba(255,255,255,0.7);
  margin-bottom: 32px;
  font-size: 1rem;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========== CONTACT ========== */
.contact {
  padding: 100px 0;
}
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}
.contact-info h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.contact-info > p {
  color: #4b5563;
  margin-bottom: 32px;
  line-height: 1.7;
}
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-item svg {
  color: var(--green-600);
  flex-shrink: 0;
  margin-top: 2px;
}
.contact-item strong {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 2px;
}
.contact-item span {
  font-size: 0.85rem;
  color: #4b5563;
}
.contact-item a {
  font-size: 0.85rem;
  color: var(--green-700);
  font-weight: 500;
}
.contact-item a:hover { color: var(--green-600); }

/* Contact Form */
.contact-form-wrap {
  background: var(--gray-100);
  border-radius: var(--radius-xl);
  padding: 40px;
  border: 1px solid var(--gray-200);
}
.contact-form h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 24px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--dark-800);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  background: var(--white);
  transition: border-color 0.2s, box-shadow 0.2s;
  color: var(--dark-800);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green-500);
  box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.1);
}
.form-group textarea { resize: vertical; }
.form-group select { cursor: pointer; }
.form-note {
  text-align: center;
  margin-top: 12px;
  font-size: 0.8rem;
  color: #6b7280;
}

/* ========== FOOTER ========== */
.footer {
  background: var(--green-500);
  padding: 72px 0 32px;
  color: rgba(255,255,255,0.92);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 20px;
  color: rgba(255,255,255,0.9);
}
.footer-links h4 {
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 800;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: inline;
}
.footer-links summary {
  list-style: none;
  margin-bottom: 16px;
}
.footer-links summary::-webkit-details-marker { display: none; }
.footer-links summary::marker { content: ""; }
/* Desktop: always show all column items regardless of open state */
@media (min-width: 769px) {
  .footer-links > *:not(summary) { display: block !important; }
  .footer-links summary { cursor: default; }
}
.footer-links a {
  display: block;
  font-size: 0.9rem;
  padding: 4px 0;
  color: rgba(255,255,255,0.85);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--dark-950); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.18);
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.85);
}
.footer-demo {
  margin-top: 8px;
  font-size: 0.75rem;
  color: rgba(0,0,0,0.7);
}
.footer-demo a {
  color: var(--dark-950);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.footer-demo a:hover { color: var(--white); }

/* ========== LIGHTBOX ========== */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.lightbox.active {
  display: flex;
  opacity: 1;
}
.lightbox-figure {
  position: relative;
  max-width: 92vw;
  max-height: 92vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.lightbox-figure img {
  max-width: 100%;
  max-height: 84vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  display: block;
}
.lightbox-figure figcaption {
  color: rgba(255, 255, 255, 0.95);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-align: center;
}
.lightbox-close,
.lightbox-nav {
  position: absolute;
  background: rgba(255, 255, 255, 0.12);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  z-index: 2001;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background 0.2s, transform 0.2s;
  font-family: inherit;
}
.lightbox-close:hover,
.lightbox-nav:hover {
  background: var(--green-500);
  transform: scale(1.05);
}
.lightbox-close {
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  font-size: 1.6rem;
  line-height: 1;
}
.lightbox-nav {
  top: 50%;
  transform: translateY(-50%);
  width: 56px;
  height: 56px;
  font-size: 1.4rem;
}
.lightbox-nav:hover { transform: translateY(-50%) scale(1.05); }
.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }
@media (max-width: 640px) {
  .lightbox-close { top: 16px; right: 16px; width: 40px; height: 40px; font-size: 1.4rem; }
  .lightbox-nav { width: 44px; height: 44px; }
  .lightbox-prev { left: 12px; }
  .lightbox-next { right: 12px; }
}

/* ========== WHATSAPP FAB ========== */
.whatsapp-fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 60px;
  height: 60px;
  background: var(--whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: all 0.3s ease;
}
.whatsapp-fab:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .material-layout { grid-template-columns: 1fr; gap: 48px; }
  .about-layout { grid-template-columns: 1fr; gap: 48px; }
  .sustain-layout { grid-template-columns: 1fr; gap: 48px; }
  .contact-layout { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 10, 0.98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 24px;
    z-index: 999;
  }
  .nav-links.active { display: flex; }
  .nav-links a { font-size: 1.2rem; color: var(--white); }
  .nav-toggle { display: flex; z-index: 1000; }

  .hero { padding: 100px 24px 60px; min-height: 90vh; }
  .hero h1 { font-size: 2.2rem; }
  .hero-stats { gap: 20px; }
  .stat-number { font-size: 1.4rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-scroll-indicator { display: none; }

  .trust-items { gap: 20px; }
  .trust-item span { font-size: 0.75rem; }

  .product-grid { grid-template-columns: 1fr; }
  .benefits-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .sector-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-large { grid-column: span 1; }

  .material-comparison { flex-direction: column; }
  .comparison-divider span { display: block; text-align: center; }

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

  /* Mobile footer: collapsible columns + centered logo */
  .footer-grid { grid-template-columns: 1fr; gap: 0; }
  .footer-brand {
    text-align: center;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255,255,255,0.18);
    margin-bottom: 8px;
  }
  .footer-brand .nav-logo { display: inline-flex; }
  .footer-links {
    border-bottom: 1px solid rgba(255,255,255,0.18);
    padding: 4px 0;
  }
  .footer-links summary {
    margin: 0;
    padding: 16px 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
  }
  .footer-links summary h4 { margin-bottom: 0; }
  .footer-links summary::after {
    content: "+";
    color: rgba(255,255,255,0.85);
    font-size: 1.4rem;
    font-weight: 400;
    line-height: 1;
    margin-left: 12px;
  }
  .footer-links[open] summary::after { content: "\2013"; }
  .footer-links a { padding: 6px 4px; }
  .footer-links a:last-child { padding-bottom: 14px; }

  .sustain-num { font-size: 2rem; }
  .contact-form-wrap { padding: 28px; }

  .section-header { margin-bottom: 48px; }
  .products, .why-renova, .gallery, .testimonials,
  .sectors, .about, .sustainability, .contact { padding: 64px 0; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.8rem; }
  .hero-sub { font-size: 1rem; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { width: 40px; height: 1px; }
  .announcement-bar { font-size: 0.7rem; }
  .btn { padding: 12px 24px; font-size: 0.85rem; }
  .btn-lg { padding: 14px 28px; }
}