/* ==========================================================================
   GRUPO MARBE & SB BORRACHAS - ESTILOS PRINCIPAIS
   Domínio: grupomarbesbborrachas.com.br
   Ribeirão Preto - SP | (16) 2525-0294
   ========================================================================== */

:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: #1f2937;
  --bg-card-hover: #263548;
  --bg-light: #f8fafc;
  --bg-light-card: #ffffff;

  --marbe-orange: #f97316;
  --marbe-orange-hover: #ea580c;
  --marbe-glow: rgba(249, 115, 22, 0.25);

  --sb-cyan: #06b6d4;
  --sb-cyan-hover: #0891b2;
  --sb-blue: #2563eb;
  --sb-glow: rgba(6, 182, 212, 0.25);

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dark: #1e293b;
  --text-dark-muted: #64748b;

  --border-color: rgba(255, 255, 255, 0.1);
  --border-light: #e2e8f0;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 35px -10px rgba(0, 0, 0, 0.5);

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

ul {
  list-style: none;
}

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

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Top Bar */
.top-bar {
  background-color: #050811;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.85rem;
  padding: 0.5rem 0;
  color: var(--text-muted);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.top-bar-info, .top-bar-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.top-bar a:hover {
  color: #fff;
}

.top-bar-highlight {
  color: var(--marbe-orange);
  font-weight: 600;
}

/* Header & Nav */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(11, 15, 25, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--marbe-orange), var(--sb-cyan));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  font-size: 1.25rem;
  box-shadow: 0 0 15px rgba(249, 115, 22, 0.4);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(90deg, #ffffff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-subtitle {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--marbe-orange), var(--sb-cyan));
  transition: var(--transition);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--marbe-orange), #d97706);
  color: #fff;
  box-shadow: 0 4px 14px var(--marbe-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--marbe-orange-hover), #b45309);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
}

.btn-sb {
  background: linear-gradient(135deg, var(--sb-cyan), var(--sb-blue));
  color: #fff;
  box-shadow: 0 4px 14px var(--sb-glow);
}

.btn-sb:hover {
  background: linear-gradient(135deg, var(--sb-cyan-hover), #1d4ed8);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 6rem 0 5rem;
  background: radial-gradient(circle at 50% 20%, rgba(37, 99, 235, 0.15), transparent 60%),
              radial-gradient(circle at 80% 50%, rgba(249, 115, 22, 0.1), transparent 50%),
              var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: #e2e8f0;
  margin-bottom: 1.5rem;
}

.hero-badge .pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, var(--marbe-orange) 0%, #fbbf24 50%, var(--sb-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 820px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
}

.stat-num span {
  color: var(--marbe-orange);
}

.stat-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Sections Common */
.section {
  padding: 5rem 0;
  position: relative;
}

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

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--marbe-orange);
  margin-bottom: 0.75rem;
  display: block;
}

.section-tag.sb {
  color: var(--sb-cyan);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 1rem;
  color: #fff;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* Companies Side by Side Cards */
.companies-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.company-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.company-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: var(--shadow-lg);
}

.company-card.marbe-card {
  border-top: 4px solid var(--marbe-orange);
}

.company-card.sb-card {
  border-top: 4px solid var(--sb-cyan);
}

.company-badge {
  display: inline-block;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}

.marbe-card .company-badge {
  background: rgba(249, 115, 22, 0.15);
  color: var(--marbe-orange);
  border: 1px solid rgba(249, 115, 22, 0.3);
}

.sb-card .company-badge {
  background: rgba(6, 182, 212, 0.15);
  color: var(--sb-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.company-name {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.75rem;
}

.company-focus {
  font-size: 1rem;
  color: #e2e8f0;
  margin-bottom: 1.25rem;
  font-weight: 500;
}

.company-features {
  margin-bottom: 2rem;
}

.company-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.company-features li svg {
  flex-shrink: 0;
  margin-top: 3px;
}

.marbe-card .company-features li svg {
  color: var(--marbe-orange);
}

.sb-card .company-features li svg {
  color: var(--sb-cyan);
}

.company-materials {
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.materials-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #94a3b8;
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.material-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.material-tag {
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  color: #e2e8f0;
}

.company-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

/* Technical Products Section */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.product-box {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.product-box:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
}

.product-box-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
}

.product-box-icon.pu {
  background: rgba(249, 115, 22, 0.15);
  color: var(--marbe-orange);
}

.product-box-icon.rubber {
  background: rgba(6, 182, 212, 0.15);
  color: var(--sb-cyan);
}

.product-box-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.product-box-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Shore A Hardness Scale */
.hardness-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--border-color);
}

.hardness-scale-bar {
  display: flex;
  height: 14px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, #10b981 0%, #3b82f6 35%, #f59e0b 70%, #ef4444 100%);
  margin: 1.5rem 0 2rem;
  position: relative;
}

.hardness-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.hardness-item {
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.hardness-range {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.25rem;
}

.hardness-item:nth-child(1) .hardness-range { color: #34d399; }
.hardness-item:nth-child(2) .hardness-range { color: #60a5fa; }
.hardness-item:nth-child(3) .hardness-range { color: #fbbf24; }
.hardness-item:nth-child(4) .hardness-range { color: #f87171; }

.hardness-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.hardness-desc {
  font-size: 0.85rem;
  color: #cbd5e1;
}

/* Blog Section */
.blog-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.blog-filter-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.blog-tab {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.blog-tab:hover, .blog-tab.active {
  background: #fff;
  color: var(--text-dark);
  border-color: #fff;
}

.blog-search-box {
  position: relative;
  min-width: 260px;
}

.blog-search-box input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: #fff;
  padding: 0.55rem 1rem 0.55rem 2.25rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  outline: none;
  transition: var(--transition);
}

.blog-search-box input:focus {
  border-color: var(--sb-cyan);
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.3);
}

.blog-search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

.blog-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  cursor: pointer;
}

.blog-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: var(--shadow-lg);
}

.blog-card-thumb {
  height: 190px;
  position: relative;
  overflow: hidden;
}

.blog-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.blog-card:hover .blog-card-thumb img {
  transform: scale(1.05);
}

.blog-card-category {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(4px);
}

.blog-card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.blog-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.blog-card-summary {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 0.85rem;
  color: var(--marbe-orange);
  font-weight: 600;
}

.blog-admin-box {
  background: linear-gradient(135deg, rgba(31, 41, 55, 0.6), rgba(17, 24, 39, 0.9));
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-top: 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Contact & Info Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

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

.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--marbe-orange);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-info-title {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.2rem;
}

.contact-info-val {
  font-size: 1.05rem;
  color: #fff;
  font-weight: 600;
}

.contact-form-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--border-color);
}

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

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: #cbd5e1;
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: #fff;
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--marbe-orange);
  box-shadow: 0 0 10px rgba(249, 115, 22, 0.25);
}

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

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  overflow-y: auto;
}

.modal-backdrop.open {
  display: flex;
}

.modal-content {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  padding: 2.5rem;
  color: var(--text-main);
  box-shadow: var(--shadow-lg);
}

.modal-content.modal-lg {
  max-width: 960px;
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Post Reader Modal Styling */
.post-header {
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
}

.post-header .badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--marbe-orange);
  color: #fff;
  margin-bottom: 1rem;
}

.post-title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  margin-bottom: 1rem;
}

.post-meta {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.post-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #cbd5e1;
}

.post-body h2, .post-body h3 {
  color: #fff;
  margin: 1.75rem 0 0.75rem;
}

.post-body p {
  margin-bottom: 1.25rem;
}

.post-body ul, .post-body ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
  list-style: disc;
}

.post-body li {
  margin-bottom: 0.5rem;
}

.post-body blockquote {
  background: rgba(249, 115, 22, 0.1);
  border-left: 4px solid var(--marbe-orange);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Floating WhatsApp Button */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #25d366;
  color: #fff;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
  z-index: 99;
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.6);
}

/* Footer */
.footer {
  background: #050811;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 1rem 0 1.5rem;
  max-width: 320px;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1.25rem;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.5rem;
  }
  .companies-grid, .products-grid, .blog-grid, .hardness-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: none;
  }
  .nav-menu.open {
    display: flex;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .companies-grid, .products-grid, .blog-grid, .hardness-grid, .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}