/* ============================================================
   GLOBAL ENGINEERING SOLUTION
   Main Stylesheet — Design System & Custom Styles
   ============================================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

/* ========================
   CSS CUSTOM PROPERTIES
======================== */
:root {
  /* Brand Colors */
  --clr-primary:        #7C3AED;   /* Purple */
  --clr-primary-dark:   #5B21B6;
  --clr-primary-mid:    #6D28D9;
  --clr-primary-light:  #EDE9FE;
  --clr-accent:         #16A34A;   /* Green */
  --clr-accent-dark:    #15803D;
  --clr-accent-light:   #DCFCE7;

  /* Neutrals */
  --clr-white:      #FFFFFF;
  --clr-black:      #111827;
  --clr-gray-50:    #F9FAFB;
  --clr-gray-100:   #F3F4F6;
  --clr-gray-200:   #E5E7EB;
  --clr-gray-400:   #9CA3AF;
  --clr-gray-500:   #6B7280;
  --clr-gray-600:   #4B5563;
  --clr-gray-800:   #1F2937;

  /* Typography */
  --font-base: 'Inter', sans-serif;

  /* Font Sizes */
  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-lg:   1.125rem;
  --fs-xl:   1.25rem;
  --fs-2xl:  1.5rem;
  --fs-3xl:  1.875rem;
  --fs-4xl:  2.25rem;
  --fs-5xl:  3rem;

  /* Layout */
  --section-py:    5rem;
  --section-py-sm: 3rem;
  --navbar-height: 72px;

  /* Shadows */
  --shadow-sm:   0 1px 4px rgba(0,0,0,0.07);
  --shadow-md:   0 4px 18px rgba(0,0,0,0.10);
  --shadow-lg:   0 8px 36px rgba(0,0,0,0.13);
  --shadow-card: 0 2px 14px rgba(124,58,237,0.09);

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  /* Transitions */
  --tr-fast: 0.2s ease;
  --tr-base: 0.3s ease;
  --tr-slow: 0.5s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-base);
  color: var(--clr-black);
  background: var(--clr-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a { transition: color var(--tr-fast); }

/* ========================
   TYPOGRAPHY
======================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--clr-gray-800);
}

.section-badge {
  display: inline-block;
  background: var(--clr-primary-light);
  color: var(--clr-primary);
  font-size: var(--fs-xs);
  font-weight: 600;
  padding: 0.35rem 1rem;
  border-radius: 50px;
  margin-bottom: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.section-badge-accent {
  background: var(--clr-accent-light);
  color: var(--clr-accent-dark);
}

.section-title {
  font-size: clamp(1.6rem, 3vw, var(--fs-3xl));
  font-weight: 800;
  color: var(--clr-gray-800);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: var(--fs-lg);
  color: var(--clr-gray-500);
  max-width: 600px;
}

.divider-accent {
  display: block;
  width: 56px;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  border-radius: 4px;
  margin-bottom: 1.5rem;
}

/* ========================
   BUTTONS
======================== */
.btn-primary-custom {
  background: var(--clr-primary);
  color: var(--clr-white);
  border: 2px solid var(--clr-primary);
  padding: 0.7rem 1.85rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--fs-base);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--tr-base);
  cursor: pointer;
}

.btn-primary-custom:hover,
.btn-primary-custom:focus {
  background: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
  color: var(--clr-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(124,58,237,0.35);
  text-decoration: none;
}

.btn-accent-custom {
  background: var(--clr-accent);
  color: var(--clr-white);
  border: 2px solid var(--clr-accent);
  padding: 0.7rem 1.85rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--fs-base);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--tr-base);
}

.btn-accent-custom:hover,
.btn-accent-custom:focus {
  background: var(--clr-accent-dark);
  border-color: var(--clr-accent-dark);
  color: var(--clr-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(22,163,74,0.35);
  text-decoration: none;
}

.btn-outline-white {
  background: transparent;
  color: var(--clr-white);
  border: 2px solid rgba(255,255,255,0.7);
  padding: 0.7rem 1.85rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--fs-base);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--tr-base);
}

.btn-outline-white:hover {
  background: var(--clr-white);
  color: var(--clr-primary);
  border-color: var(--clr-white);
  transform: translateY(-2px);
  text-decoration: none;
}

/* ========================
   NAVBAR
======================== */
.navbar-custom {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(0,0,0,0.07);
  padding: 0;
  height: var(--navbar-height);
  transition: box-shadow var(--tr-base), background var(--tr-base);
}

.navbar-custom.scrolled {
  box-shadow: 0 3px 30px rgba(0,0,0,0.12);
}

.navbar-custom .container {
  height: 100%;
  display: flex;
  align-items: center;
}

/* Brand */
.navbar-brand-custom {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  padding: 0;
}

.brand-logo {
  height: 46px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
}

/* Text fallback when logo image is missing */
.brand-logo-fallback {
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--clr-white);
  flex-shrink: 0;
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--clr-primary);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.brand-tagline {
  font-size: 0.58rem;
  color: var(--clr-gray-500);
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Nav links */
.navbar-nav .nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-gray-800) !important;
  padding: 0.45rem 1rem !important;
  border-radius: var(--radius-sm);
  transition: color var(--tr-fast), background var(--tr-fast);
  position: relative;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  transition: width var(--tr-base);
  border-radius: 2px;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--clr-primary) !important;
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  width: 72%;
}

.navbar-nav .nav-link.active {
  font-weight: 600;
}

/* Toggler */
.navbar-toggler {
  border: none;
  padding: 0.3rem 0.5rem;
}

.navbar-toggler:focus {
  outline: none;
  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='%237C3AED' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Mobile collapse */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: var(--clr-white);
    border-top: 1px solid var(--clr-gray-100);
    margin-top: 0.5rem;
    padding: 1rem 0.5rem 1.25rem;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: 0 8px 24px rgba(0,0,0,0.09);
  }

  .navbar-nav .nav-link::after { display: none; }

  .navbar-nav .nav-link.active {
    background: var(--clr-primary-light);
    border-radius: var(--radius-sm);
  }
}

/* ========================
   PAGE HERO BANNER
   (inner pages: About, Products, Contact)
======================== */
.page-hero {
  margin-top: var(--navbar-height);
  padding: 4.5rem 0 3rem;
  background: linear-gradient(135deg, var(--clr-primary) 0%, #4F46E5 55%, var(--clr-accent) 100%);
  position: relative;
  overflow: hidden;
}

/* Subtle dot pattern overlay */
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.page-hero .container { position: relative; z-index: 1; }

.page-hero-title {
  font-size: clamp(2rem, 4vw, var(--fs-4xl));
  font-weight: 800;
  color: var(--clr-white);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.page-hero-breadcrumb {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.75);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.page-hero-breadcrumb a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
}

.page-hero-breadcrumb a:hover { color: var(--clr-white); }

.page-hero-breadcrumb .sep {
  opacity: 0.5;
  font-size: 0.7rem;
}

/* ========================
   HERO CAROUSEL (Home)
======================== */
#heroCarousel {
  margin-top: var(--navbar-height);
}

.hero-slide {
  position: relative;
  height: calc(100vh - var(--navbar-height));
  min-height: 560px;
  max-height: 820px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* Gradient fallback backgrounds per slide */
.slide-bg-1 { background: linear-gradient(135deg, #5B21B6 0%, #3730A3 100%); }
.slide-bg-2 { background: linear-gradient(135deg, #7C3AED 0%, #059669 100%); }
.slide-bg-3 { background: linear-gradient(135deg, #4338CA 0%, #16A34A 100%); }
.slide-bg-4 { background: linear-gradient(135deg, #6D28D9 0%, #0D9488 100%); }
.slide-bg-5 { background: linear-gradient(135deg, #7C3AED 0%, #166534 100%); }

.hero-slide-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero-slide-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    135deg,
    rgba(91, 33, 182, 0.88) 0%,
    rgba(22, 163, 74, 0.75) 100%
  );
}

.hero-slide-content {
  position: relative;
  z-index: 2;
  color: var(--clr-white);
  max-width: 680px;
}

.hero-slide-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(6px);
  color: var(--clr-white);
  font-size: var(--fs-xs);
  font-weight: 600;
  padding: 0.35rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.25rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-slide-title {
  font-size: clamp(1.9rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--clr-white);
  line-height: 1.1;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero-slide-text {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: rgba(255,255,255,0.88);
  font-weight: 300;
  margin-bottom: 2rem;
  max-width: 540px;
  line-height: 1.7;
}

.hero-slide-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Carousel controls */
.carousel-control-prev,
.carousel-control-next {
  width: 48px;
  height: 48px;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 50%;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(6px);
  opacity: 0.85;
  transition: all var(--tr-base);
  margin: 0 1.25rem;
}

.carousel-control-prev { left: 0; }
.carousel-control-next { right: 0; }

.carousel-control-prev:hover,
.carousel-control-next:hover {
  background: rgba(255,255,255,0.32);
  opacity: 1;
  transform: translateY(-50%) scale(1.08);
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
  width: 1.25rem;
  height: 1.25rem;
}

/* Indicators */
.carousel-indicators {
  bottom: 1.5rem;
}

.carousel-indicators [data-bs-target] {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.5);
  transition: all var(--tr-base);
  margin: 0 4px;
}

.carousel-indicators .active {
  width: 28px;
  border-radius: 5px;
  background: var(--clr-white);
  opacity: 1;
}

/* ========================
   SERVICES SECTION (Home)
======================== */
.services-section {
  padding: var(--section-py) 0;
  background: var(--clr-gray-50);
}

.service-card {
  background: var(--clr-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--clr-gray-200);
  height: 100%;
  transition: transform var(--tr-base), box-shadow var(--tr-base), border-color var(--tr-base);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(124,58,237,0.17);
  border-color: var(--clr-primary-light);
}

.service-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.5s ease;
  display: block;
}

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

.service-img-wrap {
  overflow: hidden;
  position: relative;
}

.service-icon-badge {
  position: absolute;
  bottom: -1px;
  right: 1.25rem;
  transform: translateY(50%);
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-mid));
  color: var(--clr-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 14px rgba(124,58,237,0.4);
  border: 3px solid var(--clr-white);
  z-index: 1;
}

.service-card-body {
  padding: 2rem 1.5rem 1.5rem;
}

.service-card-title {
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--clr-gray-800);
}

.service-card-text {
  font-size: var(--fs-sm);
  color: var(--clr-gray-500);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.service-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--clr-primary);
  text-decoration: none;
  transition: gap var(--tr-base), color var(--tr-fast);
}

.service-card-link:hover {
  color: var(--clr-primary-dark);
  gap: 0.7rem;
}

/* ========================
   ABOUT PAGE
======================== */
.about-section {
  padding: var(--section-py) 0;
}

.about-img-col {
  position: relative;
  padding-bottom: 2rem;
}

.about-main-img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  display: block;
}

.about-badge-card {
  position: absolute;
  bottom: 0;
  left: -1rem;
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: 1rem 1.5rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.875rem;
  min-width: 200px;
}

.about-badge-icon {
  width: 52px;
  height: 52px;
  background: var(--clr-primary-light);
  color: var(--clr-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.about-badge-text strong {
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--clr-primary);
  display: block;
  line-height: 1;
}

.about-badge-text span {
  font-size: var(--fs-xs);
  color: var(--clr-gray-500);
  font-weight: 500;
}

.about-content-col { padding-left: 1rem; }

.about-content-col .section-badge { margin-bottom: 0.5rem; }

.about-content-col h2.section-title {
  margin-bottom: 0.5rem;
}

.about-lead {
  font-size: var(--fs-lg);
  color: var(--clr-gray-600);
  line-height: 1.75;
  margin-bottom: 2rem;
}

.about-feature {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding: 1.25rem;
  background: var(--clr-gray-50);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--clr-primary);
  transition: border-color var(--tr-fast), background var(--tr-fast);
}

.about-feature:last-child { margin-bottom: 0; }

.about-feature:hover {
  border-left-color: var(--clr-accent);
  background: var(--clr-accent-light);
}

.about-feature-icon {
  width: 44px;
  height: 44px;
  background: var(--clr-primary-light);
  color: var(--clr-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
  transition: background var(--tr-fast), color var(--tr-fast);
}

.about-feature:hover .about-feature-icon {
  background: var(--clr-accent-light);
  color: var(--clr-accent-dark);
}

.about-feature-body h4 {
  font-size: var(--fs-base);
  font-weight: 700;
  margin-bottom: 0.2rem;
  color: var(--clr-gray-800);
}

.about-feature-body p {
  font-size: var(--fs-sm);
  color: var(--clr-gray-500);
  margin: 0;
  line-height: 1.65;
}

/* ========================
   CONTACT PAGE
======================== */
.contact-section {
  padding: var(--section-py) 0;
  background: var(--clr-gray-50);
}

.contact-info-card {
  background: var(--clr-white);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  height: 100%;
}

.contact-info-card h2 {
  font-size: var(--fs-2xl);
  font-weight: 800;
  margin-bottom: 0.4rem;
}

.contact-intro {
  font-size: var(--fs-base);
  color: var(--clr-gray-500);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.125rem;
  border-radius: var(--radius-lg);
  margin-bottom: 0.875rem;
  background: var(--clr-gray-50);
  border: 1px solid transparent;
  transition: background var(--tr-base), border-color var(--tr-base);
}

.contact-item:last-child { margin-bottom: 0; }

.contact-item:hover {
  background: var(--clr-primary-light);
  border-color: var(--clr-primary-light);
}

.contact-item-icon {
  width: 50px;
  height: 50px;
  background: var(--clr-primary-light);
  color: var(--clr-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  transition: background var(--tr-fast), color var(--tr-fast);
}

.contact-item:hover .contact-item-icon {
  background: var(--clr-primary);
  color: var(--clr-white);
}

.contact-item-body {}

.contact-item-body h5 {
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--clr-gray-400);
  margin-bottom: 0.25rem;
}

.contact-item-body a,
.contact-item-body address {
  font-size: var(--fs-base);
  color: var(--clr-gray-800);
  font-weight: 500;
  text-decoration: none;
  margin: 0;
  font-style: normal;
  line-height: 1.55;
  display: block;
}

.contact-item-body a:hover { color: var(--clr-primary); }

/* Map */
.map-card {
  background: var(--clr-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  height: 100%;
  min-height: 440px;
}

.map-card iframe {
  width: 100%;
  height: 100%;
  min-height: 440px;
  border: none;
  display: block;
}

/* ========================
   PRODUCTS PAGE
======================== */
.products-section {
  padding: var(--section-py) 0;
  background: var(--clr-gray-50);
}

/* === FLIP CARD === */
.flip-card-wrapper {
  /* forces equal heights in a Bootstrap grid */
}

.flip-card {
  perspective: 1100px;
  cursor: pointer;
  height: 360px;
  user-select: none;
  -webkit-user-select: none;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.65s cubic-bezier(0.4, 0.2, 0.2, 1);
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
}

.flip-card.flipped .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

/* Front */
.flip-card-front {
  background: var(--clr-white);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--clr-gray-200);
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--tr-base);
}

.flip-card:hover .flip-card-front {
  box-shadow: 0 12px 36px rgba(124,58,237,0.16);
}

.front-img-wrap {
  height: 220px;
  overflow: hidden;
  flex-shrink: 0;
}

.front-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.flip-card:hover .front-img-wrap img { transform: scale(1.05); }

.front-body {
  padding: 1.25rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.front-title {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--clr-gray-800);
  margin-bottom: 0.35rem;
  line-height: 1.35;
}

.front-hint {
  font-size: var(--fs-xs);
  color: var(--clr-gray-400);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
}

.front-hint i { font-size: 0.7rem; animation: pulse-tap 1.8s ease infinite; }

/* Back */
.flip-card-back {
  background: linear-gradient(145deg, var(--clr-primary) 0%, #4F46E5 60%, var(--clr-accent-dark) 100%);
  transform: rotateY(180deg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.75rem 1.5rem;
  text-align: center;
  color: var(--clr-white);
}

.back-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,0.18);
  border: 2px solid rgba(255,255,255,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 0.875rem;
}

.back-title {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.back-desc {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.82);
  line-height: 1.65;
  margin-bottom: 0.875rem;
}

.back-details {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem 0;
  text-align: left;
  width: 100%;
}

.back-details li {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.8);
  padding: 0.18rem 0;
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
}

.back-details li i {
  color: rgba(255,255,255,0.55);
  font-size: 0.65rem;
  flex-shrink: 0;
  margin-top: 0.18rem;
}

.btn-back {
  background: rgba(255,255,255,0.18);
  color: var(--clr-white);
  border: 1.5px solid rgba(255,255,255,0.45);
  padding: 0.45rem 1.4rem;
  border-radius: var(--radius-md);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-decoration: none;
  transition: background var(--tr-fast);
  display: inline-block;
}

.btn-back:hover {
  background: rgba(255,255,255,0.32);
  color: var(--clr-white);
  text-decoration: none;
}

/* ========================
   FOOTER
======================== */
.site-footer {
  background: var(--clr-gray-800);
  padding: 1.75rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.footer-logo {
  height: 34px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.75;
}

.footer-logo-fallback {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--clr-white);
}

.footer-brand-name {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--clr-white);
}

.footer-copy {
  text-align: center;
}

.footer-copy p {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.55);
  margin: 0;
  line-height: 1.8;
}

.footer-copy p:first-child {
  color: rgba(255,255,255,0.75);
  font-weight: 500;
}

/* ========================
   ANIMATIONS
======================== */
@keyframes pulse-tap {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0);    }
}

.fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.7s ease forwards;
}

.fade-in-up.delay-1 { animation-delay: 0.15s; }
.fade-in-up.delay-2 { animation-delay: 0.3s; }
.fade-in-up.delay-3 { animation-delay: 0.45s; }
.fade-in-up.delay-4 { animation-delay: 0.6s; }

/* ========================
   RESPONSIVE ADJUSTMENTS
======================== */
@media (max-width: 991.98px) {
  .about-content-col { padding-left: 0; margin-top: 2rem; }
  .about-badge-card { left: 0; }
}

@media (max-width: 767.98px) {
  :root {
    --section-py: 3rem;
  }

  .hero-slide {
    height: 78vh;
    min-height: 500px;
  }

  .page-hero {
    padding: 3.5rem 0 2.5rem;
  }

  .page-hero-title { font-size: var(--fs-3xl); }

  .about-main-img { height: 360px; }

  .about-badge-card {
    position: static;
    margin-top: 1rem;
    justify-content: center;
    width: 100%;
  }

  .flip-card { height: 380px; }

  .footer-inner { flex-direction: column; text-align: center; }

  .contact-info-card { padding: 1.75rem; }

  .hero-slide-actions { gap: 0.75rem; }
}

@media (max-width: 575.98px) {
  .flip-card { height: 360px; }

  .front-img-wrap { height: 200px; }

  .carousel-control-prev,
  .carousel-control-next { display: none; }
}