/* Rishika Infotech - Custom Stylesheet */

:root {
  --brand-blue: #0756B5;
  --brand-dark: #053E82;
  --brand-charcoal: #454B55;
  --brand-heading: #1E2530;
  --brand-bg-light: #F4F7FB;
  --brand-accent-red: #E53935;
  --whatsapp-green: #25D366;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem; /* 80px sticky header offset for anchor jumps */
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--brand-charcoal);
  background-color: #FFFFFF;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 9px;
}
::-webkit-scrollbar-track {
  background: #F1F5F9;
}
::-webkit-scrollbar-thumb {
  background: #94A3B8;
  border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--brand-blue);
}

/* Card Transitions & Hover Effects */
.card-transition {
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.28s ease;
}
.card-transition:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 32px -10px rgba(7, 86, 181, 0.14), 0 4px 12px -2px rgba(0, 0, 0, 0.05);
}

/* Form inputs */
.form-input-focus:focus {
  outline: none;
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(7, 86, 181, 0.18);
  background-color: #FFFFFF;
}

/* Floating Action Button (WhatsApp Quick Connect) */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 99;
  background-color: #25D366;
  color: #FFFFFF;
  border-radius: 50px;
  box-shadow: 0 10px 25px -5px rgba(37, 211, 102, 0.5), 0 6px 10px -4px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px 12px 16px;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  text-decoration: none;
}
.whatsapp-float:hover {
  transform: scale(1.06) translateY(-2px);
  box-shadow: 0 15px 30px -5px rgba(37, 211, 102, 0.65);
  color: #FFFFFF;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 88px;
  right: 28px;
  z-index: 90;
  width: 44px;
  height: 44px;
  background-color: var(--brand-heading);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,0.2);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
  border: 1px solid rgba(255,255,255,0.1);
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background-color: var(--brand-blue);
  transform: translateY(-3px);
}

/* Image zoom effect on card hover */
.img-zoom-container {
  overflow: hidden;
}
.img-zoom-container img {
  transition: transform 0.4s ease;
}
.card-transition:hover .img-zoom-container img {
  transform: scale(1.05);
}

/* Active Nav Link highlight */
.nav-link.active {
  color: var(--brand-blue);
  font-weight: 600;
  position: relative;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--brand-blue);
  border-radius: 2px;
}