/**
 * SRNK Group – Frontend theme
 * Light header, distinctive typography, 3D effects, scroll animations
 * Palette: Royal Blue, Sky Blue, Milk White, Accent Yellow
 */

:root {
  --srnk-royal: #1a237e;
  --srnk-royal-dark: #0d1440;
  --srnk-sky: #4fc3f7;
  --srnk-sky-light: #b3e5fc;
  --srnk-sky-gradient-start: #e1f5fe;
  --srnk-sky-gradient-end: #81d4fa;
  --srnk-milk: #f8f7f5;
  --srnk-cream: #f0eee8;
  --srnk-white: #ffffff;
  --srnk-yellow: #e6a800;
  --srnk-yellow-light: #f5d547;
  --srnk-yellow-dark: #c49000;
  --srnk-green: #2e7d32;
  --srnk-text: #1c1c1c;
  --srnk-text-muted: #5a5a5a;
  --srnk-border: rgba(26, 35, 126, 0.12);
  --font-heading: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-hindi: 'Noto Sans Devanagari', 'Mangal', sans-serif;
  --shadow-sm: 0 2px 8px rgba(26, 35, 126, 0.06);
  --shadow-md: 0 8px 24px rgba(26, 35, 126, 0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 20px 50px rgba(26, 35, 126, 0.12), 0 8px 20px rgba(0,0,0,0.06);
  --shadow-3d: 0 25px 50px -12px rgba(26, 35, 126, 0.2), 0 12px 24px -8px rgba(0,0,0,0.1);
  --radius-card: 20px;
  --radius-pill: 999px;
}

/* Base */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--srnk-text);
  background-color: var(--srnk-milk);
  font-size: 1rem;
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6,
.srnk-section-title {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--srnk-royal);
  letter-spacing: -0.02em;
}

.srnk-hindi {
  font-family: var(--font-hindi);
  font-weight: 700;
}

/* ---- Light header ---- */
.srnk-header-light {
  background: var(--srnk-white) !important;
  box-shadow: 0 1px 0 var(--srnk-border), var(--shadow-sm);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  transition: box-shadow 0.3s ease;
}

.srnk-header-light .navbar-brand {
  color: var(--srnk-royal) !important;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
}

.srnk-header-light .navbar-nav .nav-link {
  color: var(--srnk-text) !important;
  font-family: var(--font-body);
  font-weight: 500;
  padding: 0.5rem 0.85rem;
  position: relative;
  transition: color 0.2s ease;
}

.srnk-header-light .navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0.25rem;
  height: 2px;
  background: var(--srnk-yellow);
  transform: scaleX(0);
  transition: transform 0.25s ease;
  border-radius: var(--radius-pill);
}

.srnk-header-light .navbar-nav .nav-link:hover,
.srnk-header-light .navbar-nav .nav-link.active {
  color: var(--srnk-royal) !important;
}

.srnk-header-light .navbar-nav .nav-link:hover::after,
.srnk-header-light .navbar-nav .nav-link.active::after {
  transform: scaleX(1);
}

.srnk-header-light .navbar-toggler {
  border-color: var(--srnk-border);
  color: var(--srnk-royal);
}

.srnk-header-light .navbar-toggler:focus {
  box-shadow: 0 0 0 2px rgba(26, 35, 126, 0.15);
}

.srnk-header-light .dropdown-menu {
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--srnk-border);
  padding: 0.5rem;
}

/* ---- Scroll-reveal animations ---- */
.srnk-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.srnk-reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.srnk-reveal-delay-1 { transition-delay: 0.1s; }
.srnk-reveal-delay-2 { transition-delay: 0.2s; }
.srnk-reveal-delay-3 { transition-delay: 0.3s; }
.srnk-reveal-delay-4 { transition-delay: 0.4s; }

/* ---- Hero ---- */
.srnk-hero {
  margin-top: 0;
}

.srnk-hero-slide {
  min-height: 480px;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
}

.srnk-hero-slide::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(92deg, rgba(26, 35, 126, 0.88) 0%, rgba(26, 35, 126, 0.5) 45%, transparent 75%);
}

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

.srnk-hero h1 {
  opacity: 0;
  transform: translateY(24px);
  animation: srnk-fade-up 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.2s forwards;
}

.srnk-hero .lead {
  opacity: 0;
  transform: translateY(20px);
  animation: srnk-fade-up 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.4s forwards;
}

.srnk-hero .btn {
  opacity: 0;
  transform: translateY(16px);
  animation: srnk-fade-up 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.55s forwards;
}

@keyframes srnk-fade-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- 3D Product cards ---- */
.srnk-product-card-wrap {
  perspective: 1200px;
}

.srnk-product-card {
  background: var(--srnk-white);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.45s ease;
  border: 1px solid var(--srnk-border);
  transform-style: preserve-3d;
}

.srnk-product-card:hover {
  transform: translateY(-8px) rotateX(2deg) rotateY(-1deg);
  box-shadow: var(--shadow-3d);
}

.srnk-product-card .card-img-top {
  height: 220px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.srnk-product-card:hover .card-img-top {
  transform: scale(1.03);
}

.srnk-product-card .card-body {
  padding: 1.25rem 1.35rem;
}

.srnk-product-card .card-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
}

/* ---- Section titles (less generic) ---- */
.srnk-section-title {
  font-size: clamp(1.6rem, 4vw, 2rem);
  margin-bottom: 0.4rem;
  line-height: 1.2;
}

.srnk-section-subtitle {
  font-family: var(--font-body);
  color: var(--srnk-text-muted);
  font-size: 1.05rem;
  font-weight: 400;
}

/* Section title on dark backgrounds */
section.text-white .srnk-section-title,
section.bg-srnk-royal .srnk-section-title {
  color: var(--srnk-white);
}
section.text-white .srnk-section-subtitle,
section.bg-srnk-royal .srnk-section-subtitle {
  color: rgba(255, 255, 255, 0.85);
}

/* ---- Curved / milk separator ---- */
.srnk-milk-separator {
  position: relative;
  height: 72px;
  background: linear-gradient(180deg, var(--srnk-sky-gradient-start) 0%, var(--srnk-sky-gradient-end) 100%);
  overflow: hidden;
}

.srnk-milk-separator svg {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 56px;
  fill: var(--srnk-milk);
}

.srnk-milk-separator--reverse {
  background: var(--srnk-milk);
}

.srnk-milk-separator--reverse svg {
  fill: var(--srnk-sky-light);
  transform: scaleY(-1);
  top: 0;
  bottom: auto;
}

/* ---- Backgrounds ---- */
.bg-srnk-royal { background-color: var(--srnk-royal); }
.bg-srnk-sky { background: linear-gradient(135deg, var(--srnk-sky-gradient-start), var(--srnk-sky-gradient-end)); }
.bg-srnk-milk { background-color: var(--srnk-milk); }
.bg-srnk-cream { background-color: var(--srnk-cream); }
.text-srnk-royal { color: var(--srnk-royal); }
.text-srnk-yellow { color: var(--srnk-yellow); }
.text-srnk-milk { color: var(--srnk-milk); }
.text-srnk-sky-light { color: var(--srnk-sky-light); }

/* ---- Badges ---- */
.srnk-badge {
  background: linear-gradient(135deg, var(--srnk-yellow-light), var(--srnk-yellow));
  color: var(--srnk-royal-dark);
  font-weight: 700;
  padding: 0.35em 0.8em;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  box-shadow: 0 2px 8px rgba(230, 168, 0, 0.35);
}

/* ---- Buttons (with micro 3D) ---- */
.btn-srnk-primary {
  background: var(--srnk-royal);
  border: none;
  color: var(--srnk-white);
  font-weight: 600;
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 14px rgba(26, 35, 126, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-srnk-primary:hover {
  background: var(--srnk-royal-dark);
  color: var(--srnk-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26, 35, 126, 0.4);
}

.btn-srnk-accent {
  background: linear-gradient(135deg, var(--srnk-yellow-light), var(--srnk-yellow));
  border: none;
  color: var(--srnk-royal-dark);
  font-weight: 700;
  padding: 0.55rem 1.35rem;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 16px rgba(230, 168, 0, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-srnk-accent:hover {
  color: var(--srnk-royal-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(230, 168, 0, 0.45);
}

/* ---- About section: feature blocks (icon left, text right, 3D icon) ---- */
.srnk-about-features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.srnk-about-feature {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.srnk-about-feature-icon {
  width: 56px;
  height: 56px;
  min-width: 56px;
  border-radius: 16px;
  background: linear-gradient(145deg, var(--srnk-sky-light) 0%, var(--srnk-sky) 100%);
  color: var(--srnk-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 6px 20px rgba(79, 195, 247, 0.35), 0 2px 8px rgba(26, 35, 126, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.srnk-about-feature-icon i {
  color: inherit;
}

.srnk-about-feature:hover .srnk-about-feature-icon {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(79, 195, 247, 0.4), 0 4px 12px rgba(26, 35, 126, 0.1);
}

.srnk-about-feature-body {
  flex: 1;
  padding-top: 2px;
}

.srnk-about-feature-body h5 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.srnk-about-feature-body .text-muted {
  line-height: 1.5;
}

/* About section: dark blue card – ensure all text is visible */
.srnk-about-card,
.srnk-about-card h1,
.srnk-about-card h2,
.srnk-about-card h3,
.srnk-about-card h4,
.srnk-about-card p {
  color: #ffffff !important;
}

.srnk-about-card p {
  opacity: 0.95;
}

/* ---- Generic feature icon (used elsewhere) ---- */
.srnk-feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(145deg, var(--srnk-sky-light), var(--srnk-sky));
  color: var(--srnk-royal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 6px 20px rgba(79, 195, 247, 0.35);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.srnk-feature-icon:hover {
  transform: scale(1.08) rotate(-2deg);
  box-shadow: 0 10px 28px rgba(79, 195, 247, 0.4);
}

/* ---- Why choose (3D tilt on hover) ---- */
.srnk-why-card {
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-card);
  padding: 1.75rem;
  height: 100%;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), background 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Ensure text is visible on dark blue: headings white, body high-contrast */
.srnk-why-card h5,
.srnk-why-card h6 {
  color: #ffffff !important;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.srnk-why-card p,
.srnk-why-card .small {
  color: rgba(255, 255, 255, 0.95) !important;
}

.srnk-why-card:hover {
  transform: translateY(-6px) rotateX(1deg);
  background: rgba(255, 255, 255, 0.12);
}

/* ---- Dark blue panels/cards: force visible text (Contact, About page, etc.) ---- */
.srnk-dark-card,
.srnk-dark-card h1,
.srnk-dark-card h2,
.srnk-dark-card h3,
.srnk-dark-card h4,
.srnk-dark-card h5,
.srnk-dark-card h6,
.srnk-dark-card p,
.srnk-dark-card .form-label,
.srnk-dark-card label {
  color: #ffffff !important;
}

.srnk-dark-card a {
  color: rgba(255, 255, 255, 0.95) !important;
}

.srnk-dark-card a:hover {
  color: var(--srnk-yellow-light) !important;
}

/* Contact form on dark background: visible input text and placeholders */
.srnk-dark-card .form-control,
.srnk-dark-card textarea.form-control {
  color: #ffffff !important;
  background: rgba(0, 0, 0, 0.25) !important;
  border-color: rgba(255, 255, 255, 0.2) !important;
}

.srnk-dark-card .form-control::placeholder,
.srnk-dark-card textarea.form-control::placeholder {
  color: rgba(255, 255, 255, 0.7) !important;
}

.srnk-dark-card .form-control:focus {
  background: rgba(0, 0, 0, 0.3) !important;
  border-color: rgba(255, 255, 255, 0.4) !important;
  color: #ffffff !important;
  box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.15) !important;
}

/* ---- Emotional banner ---- */
.srnk-emotional-banner {
  background: linear-gradient(135deg, var(--srnk-royal) 0%, var(--srnk-royal-dark) 100%);
  color: var(--srnk-white);
  padding: 3.5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.srnk-emotional-banner .srnk-hindi {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  color: var(--srnk-yellow-light);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

/* Hero carousel controls visible on dark overlay */
.srnk-hero .carousel-control-prev-icon,
.srnk-hero .carousel-control-next-icon {
  filter: none;
  opacity: 0.9;
}
.srnk-hero .carousel-control-prev:hover .carousel-control-prev-icon,
.srnk-hero .carousel-control-next:hover .carousel-control-next-icon {
  opacity: 1;
}

/* ---- Testimonial (card with depth) ---- */
.srnk-testimonial-card {
  background: var(--srnk-white);
  border-radius: var(--radius-card);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--srnk-yellow);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.srnk-testimonial-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-lg);
}

/* ---- FAQ ---- */
.srnk-accordion .accordion-button {
  background: var(--srnk-cream);
  color: var(--srnk-royal);
  font-weight: 600;
  font-family: var(--font-heading);
  border-radius: 12px !important;
}

.srnk-accordion .accordion-button:not(.collapsed) {
  background: var(--srnk-sky-light);
  color: var(--srnk-royal);
}

.srnk-accordion .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(230, 168, 0, 0.25);
}

/* ---- Footer ---- */
.srnk-footer {
  background: var(--srnk-royal-dark);
  color: var(--srnk-sky-light);
}

.srnk-footer a {
  color: var(--srnk-sky-light);
  text-decoration: none;
  transition: color 0.2s ease;
}

.srnk-footer a:hover {
  color: var(--srnk-yellow-light);
}

.srnk-footer-bottom {
  background: rgba(0, 0, 0, 0.25);
  padding: 1rem 0;
  font-size: 0.9rem;
}

/* ---- Utilities ---- */
.rounded-curve { border-radius: var(--radius-card); }
.shadow-srnk { box-shadow: var(--shadow-lg); }

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  .srnk-reveal,
  .srnk-product-card,
  .srnk-testimonial-card,
  .srnk-why-card,
  .srnk-feature-icon,
  .btn-srnk-primary,
  .btn-srnk-accent {
    transition-duration: 0.01ms !important;
  }
  .srnk-product-card:hover {
    transform: translateY(-4px);
  }
}