/* ============================================
   Zane Industry — Main Stylesheet
   Domain: zaneind.com
   Direction: RTL / Arabic
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700;800;900&display=swap');

/* --- CSS Variables --- */
:root {
  --primary: #0a3d6b;
  --primary-light: #1565a0;
  --primary-dark: #062a4a;
  --accent: #f0a500;
  --accent-light: #ffc133;
  --gray-100: #f7f8fa;
  --gray-200: #e9ecef;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --white: #ffffff;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.1);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,.15);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

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

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

body {
  font-family: 'Cairo', sans-serif;
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--gray-200); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }

/* --- Utility --- */
.section-padding { padding: 90px 0; }
.section-title {
  text-align: center;
  margin-bottom: 60px;
}
.section-title h2 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}
.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  right: 50%;
  transform: translateX(50%);
  width: 60px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
}
.section-title p {
  color: var(--gray-500);
  font-size: 1.1rem;
  margin-top: 20px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Navbar --- */
.navbar {
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,.06);
  padding: 12px 0;
  transition: var(--transition);
  z-index: 1050;
}
.navbar.scrolled {
  box-shadow: var(--shadow-md);
  padding: 8px 0;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.navbar-brand .brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 900;
}
.navbar-brand .brand-text {
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--primary-dark);
  line-height: 1.2;
}
.navbar-brand .brand-text small {
  display: block;
  font-size: .65rem;
  font-weight: 500;
  color: var(--gray-500);
  letter-spacing: .5px;
}
.navbar-nav .nav-link {
  font-weight: 600;
  color: var(--gray-700) !important;
  padding: 8px 18px !important;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  font-size: .95rem;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--primary) !important;
  background: rgba(10,61,107,.06);
}
.navbar-toggler {
  border: none;
  padding: 6px;
}
.navbar-toggler:focus { box-shadow: none; }
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%230a3d6b' stroke-linecap='round' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
  color: var(--white) !important;
  padding: 8px 22px !important;
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
  font-size: .9rem !important;
}
.nav-cta:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary)) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(10,61,107,.3);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: linear-gradient(145deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(240,165,0,.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(21,101,160,.3) 0%, transparent 50%);
}
.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: .06;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 60px, rgba(255,255,255,.5) 60px, rgba(255,255,255,.5) 61px),
    repeating-linear-gradient(90deg, transparent, transparent 60px, rgba(255,255,255,.5) 60px, rgba(255,255,255,.5) 61px);
}
.hero-content {
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  padding: 8px 20px;
  border-radius: 50px;
  color: rgba(255,255,255,.9);
  font-size: .85rem;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.hero-badge i { color: var(--accent); }
.hero h1 {
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 20px;
}
.hero h1 span {
  color: var(--accent);
}
.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,.8);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.9;
}
.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn-hero-primary {
  background: var(--accent);
  color: var(--primary-dark);
  padding: 14px 36px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  transition: var(--transition);
}
.btn-hero-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(240,165,0,.4);
  color: var(--primary-dark);
}
.btn-hero-secondary {
  background: rgba(255,255,255,.12);
  color: var(--white);
  padding: 14px 36px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255,255,255,.25);
  transition: var(--transition);
}
.btn-hero-secondary:hover {
  background: rgba(255,255,255,.2);
  color: var(--white);
  transform: translateY(-2px);
}
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 50px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,.12);
}
.hero-stat h3 {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 2px;
}
.hero-stat p {
  font-size: .85rem;
  color: rgba(255,255,255,.6);
  margin: 0;
}
.hero-visual {
  position: relative;
  z-index: 2;
}
.hero-card {
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}
.hero-card-icon {
  width: 90px;
  height: 90px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  color: var(--primary-dark);
}
.hero-card h3 {
  color: var(--white);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.hero-card p {
  color: rgba(255,255,255,.7);
  font-size: .9rem;
  margin: 0;
  max-width: 100%;
}

/* --- About Preview --- */
.about-preview { background: var(--gray-100); }
.about-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-img-wrap img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}
.about-img-overlay {
  position: absolute;
  bottom: 0;
  right: 0;
  left: 0;
  padding: 30px;
  background: linear-gradient(to top, rgba(10,61,107,.9), transparent);
}
.about-img-overlay h4 {
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
}
.about-img-overlay p {
  color: rgba(255,255,255,.8);
  font-size: .85rem;
  margin: 0;
}
.about-text h3 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 16px;
}
.about-text p {
  color: var(--gray-600);
  margin-bottom: 16px;
  line-height: 1.9;
}
.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.about-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--white);
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
}
.about-feature i {
  color: var(--accent);
  font-size: 1.1rem;
}
.about-feature span {
  font-weight: 600;
  font-size: .9rem;
  color: var(--gray-700);
}

/* --- Products Section --- */
.products-section { background: var(--white); }
.product-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.product-card-img {
  height: 200px;
  background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.product-card-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 40%, rgba(10,61,107,.06), transparent 60%),
    radial-gradient(circle at 70% 60%, rgba(240,165,0,.06), transparent 60%);
}
.product-card-img i {
  font-size: 3rem;
  color: var(--primary-light);
  opacity: .4;
}
.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product-card-body {
  padding: 24px;
}
.product-card-body h5 {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--primary-dark);
  margin-bottom: 8px;
}
.product-card-body p {
  color: var(--gray-500);
  font-size: .9rem;
  line-height: 1.7;
  margin-bottom: 16px;
}
.product-tag {
  display: inline-block;
  background: rgba(10,61,107,.07);
  color: var(--primary);
  padding: 4px 14px;
  border-radius: 50px;
  font-size: .78rem;
  font-weight: 600;
}
.btn-product-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: .9rem;
  transition: var(--transition);
}
.btn-product-more:hover {
  color: var(--accent);
  gap: 10px;
}

/* --- Features --- */
.features-section {
  background: linear-gradient(145deg, var(--primary-dark), var(--primary));
  position: relative;
  overflow: hidden;
}
.features-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(255,255,255,.06), transparent 60%);
}
.feature-box {
  text-align: center;
  padding: 40px 24px;
  position: relative;
  z-index: 1;
}
.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--accent);
  transition: var(--transition);
}
.feature-box:hover .feature-icon {
  background: var(--accent);
  color: var(--primary-dark);
  transform: scale(1.1);
}
.feature-box h4 {
  color: var(--white);
  font-weight: 700;
  margin-bottom: 10px;
  font-size: 1.15rem;
}
.feature-box p {
  color: rgba(255,255,255,.65);
  font-size: .9rem;
  line-height: 1.7;
}

/* --- CTA Section --- */
.cta-section {
  background: var(--gray-100);
  text-align: center;
}
.cta-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  max-width: 700px;
  margin: 0 auto;
}
.cta-card h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 14px;
}
.cta-card p {
  color: var(--gray-500);
  margin-bottom: 30px;
  font-size: 1.05rem;
}
.btn-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  padding: 14px 40px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}
.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(10,61,107,.3);
  color: var(--white);
}

/* --- Footer --- */
.footer {
  background: var(--gray-900);
  color: rgba(255,255,255,.7);
  padding-top: 70px;
}
.footer h5 {
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 12px;
}
.footer h5::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 40px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.footer p { font-size: .9rem; line-height: 1.8; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: rgba(255,255,255,.6);
  font-size: .9rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-links a:hover {
  color: var(--accent);
  padding-right: 4px;
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  font-size: .9rem;
}
.footer-contact li i {
  color: var(--accent);
  margin-top: 4px;
  font-size: .9rem;
}
.footer-contact a {
  color: rgba(255,255,255,.7);
}
.footer-contact a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  margin-top: 50px;
  text-align: center;
  font-size: .85rem;
  color: rgba(255,255,255,.4);
}
.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.6);
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--primary-dark);
}

/* --- WhatsApp Float --- */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  left: 28px;
  z-index: 999;
  width: 60px;
  height: 60px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.8rem;
  box-shadow: 0 4px 20px rgba(37,211,102,.4);
  transition: var(--transition);
  animation: pulse-wa 2s infinite;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  color: var(--white);
  box-shadow: 0 6px 28px rgba(37,211,102,.5);
}
@keyframes pulse-wa {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,.4); }
  50% { box-shadow: 0 4px 30px rgba(37,211,102,.6); }
}

/* --- Page Header --- */
.page-header {
  background: linear-gradient(145deg, var(--primary-dark), var(--primary));
  padding: 120px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 70%, rgba(240,165,0,.1), transparent 50%),
    radial-gradient(ellipse at 70% 30%, rgba(21,101,160,.2), transparent 50%);
}
.page-header-pattern {
  position: absolute;
  inset: 0;
  opacity: .04;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 40px, rgba(255,255,255,.5) 40px, rgba(255,255,255,.5) 41px),
    repeating-linear-gradient(90deg, transparent, transparent 40px, rgba(255,255,255,.5) 40px, rgba(255,255,255,.5) 41px);
}
.page-header h1 {
  color: var(--white);
  font-size: 2.6rem;
  font-weight: 900;
  position: relative;
  z-index: 1;
  margin-bottom: 10px;
}
.page-header .breadcrumb {
  justify-content: center;
  position: relative;
  z-index: 1;
}
.page-header .breadcrumb-item,
.page-header .breadcrumb-item a {
  color: rgba(255,255,255,.6);
  font-size: .9rem;
}
.page-header .breadcrumb-item.active { color: var(--accent); }
.page-header .breadcrumb-item + .breadcrumb-item::before {
  color: rgba(255,255,255,.3);
}

/* --- About Page --- */
.about-full { background: var(--white); }
.about-vision-card {
  background: var(--gray-100);
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid var(--gray-200);
  height: 100%;
  transition: var(--transition);
}
.about-vision-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.about-vision-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.4rem;
  margin-bottom: 20px;
}
.about-vision-card h4 {
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 12px;
  font-size: 1.2rem;
}
.about-vision-card p {
  color: var(--gray-600);
  font-size: .9rem;
  line-height: 1.8;
}
.team-card {
  text-align: center;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: var(--transition);
}
.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.team-card-img {
  height: 250px;
  background: var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
}
.team-card-img i {
  font-size: 4rem;
  color: var(--gray-400);
}
.team-card-body {
  padding: 20px;
}
.team-card-body h5 {
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 4px;
}
.team-card-body p {
  color: var(--gray-500);
  font-size: .85rem;
}

/* --- Contact Page --- */
.contact-section { background: var(--gray-100); }
.contact-form-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}
.contact-form-card h3 {
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 24px;
  font-size: 1.4rem;
}
.form-control, .form-select {
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-family: 'Cairo', sans-serif;
  font-size: .95rem;
  transition: var(--transition);
  direction: rtl;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(10,61,107,.1);
}
textarea.form-control { min-height: 140px; resize: vertical; }
.btn-submit {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  padding: 14px 40px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Cairo', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  width: 100%;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(10,61,107,.3);
}
.contact-info-card {
  background: linear-gradient(145deg, var(--primary-dark), var(--primary));
  border-radius: var(--radius);
  padding: 40px;
  color: var(--white);
  height: 100%;
}
.contact-info-card h3 {
  font-weight: 700;
  margin-bottom: 24px;
  font-size: 1.4rem;
}
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}
.contact-info-item .icon-circle {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: rgba(255,255,255,.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--accent);
}
.contact-info-item h5 {
  font-weight: 600;
  font-size: .95rem;
  margin-bottom: 4px;
}
.contact-info-item p,
.contact-info-item a {
  color: rgba(255,255,255,.7);
  font-size: .9rem;
  margin: 0;
}
.contact-info-item a:hover { color: var(--accent); }
.map-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  margin-top: 40px;
}
.map-wrap iframe {
  width: 100%;
  height: 350px;
  border: 0;
}

/* --- Products Page Grid --- */
.products-page { background: var(--white); }
.product-filter {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.product-filter .btn-filter {
  padding: 8px 22px;
  border-radius: 50px;
  border: 1px solid var(--gray-300);
  background: var(--white);
  color: var(--gray-600);
  font-family: 'Cairo', sans-serif;
  font-weight: 600;
  font-size: .85rem;
  transition: var(--transition);
  cursor: pointer;
}
.product-filter .btn-filter.active,
.product-filter .btn-filter:hover {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  z-index: 998;
  border: none;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
}
.back-to-top.show { display: flex; }
.back-to-top:hover {
  background: var(--accent);
  color: var(--primary-dark);
  transform: translateY(-3px);
}

/* --- 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: 991px) {
  .hero h1 { font-size: 2.4rem; }
  .hero-stats { gap: 24px; }
  .hero-stat h3 { font-size: 1.6rem; }
  .hero-visual { margin-top: 40px; }
  .section-title h2 { font-size: 2rem; }
  .about-features { grid-template-columns: 1fr; }
  .navbar-collapse {
    background: var(--white);
    padding: 16px;
    border-radius: var(--radius);
    margin-top: 10px;
    box-shadow: var(--shadow-lg);
  }
}
@media (max-width: 767px) {
  .hero { min-height: auto; padding: 120px 0 60px; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .section-padding { padding: 60px 0; }
  .section-title h2 { font-size: 1.7rem; }
  .page-header h1 { font-size: 2rem; }
  .page-header { padding: 100px 0 40px; }
  .contact-form-card, .contact-info-card { padding: 28px; }
  .cta-card { padding: 40px 24px; }
  .footer { padding-top: 50px; }
}