/* ============================================================
   Physics Navigator – Premium Homepage Styles
   Theme: Dark + Glassmorphism + Physics Glow
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --primary-gradient-reverse: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
  --accent-color: #00d2ff;
  --accent-glow: rgba(0, 210, 255, 0.4);
  --dark-bg: #000000;
  --dark-surface: #121212;
  --dark-card: #1a1a1a;
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-bg-hover: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-border-hover: rgba(255, 255, 255, 0.2);
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #888888;
  --input-bg: #1e1e1e;
  --input-border: #333333;
  --success-color: #00e676;
  --warning-color: #ffab00;
  --danger-color: #ff5252;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Open Sans', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px var(--accent-glow);
  --border-radius-sm: 10px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --border-radius-xl: 32px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  background-color: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: var(--transition-base);
}
a:hover {
  color: #ffffff;
}

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

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--dark-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--primary-gradient);
  border-radius: 10px;
}

/* ---------- Selection ---------- */
::selection {
  background: rgba(102, 126, 234, 0.5);
  color: #ffffff;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
#mainHeader {
  transition: var(--transition-smooth);
  z-index: 1030;
}
#mainHeader.scrolled {
  background: rgba(0, 0, 0, 0.85) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}

#mainNav {
  background: transparent;
  padding: 12px 0;
  transition: var(--transition-base);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}
.navbar-brand img {
  filter: brightness(1.1);
  transition: var(--transition-base);
}
.navbar-brand:hover img {
  filter: brightness(1.3);
}
.brand-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.navbar-dark .navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 14px;
  border-radius: 8px;
  transition: var(--transition-base);
  position: relative;
}
.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
  color: #ffffff;
  background: var(--glass-bg);
}
.navbar-dark .navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transition: width 0.3s ease;
  border-radius: 2px;
}
.navbar-dark .navbar-nav .nav-link:hover::after,
.navbar-dark .navbar-nav .nav-link.active::after {
  width: 60%;
}

.dropdown-menu-dark {
  background: rgba(20, 20, 20, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  padding: 8px 0;
}
.dropdown-menu-dark .dropdown-item {
  color: var(--text-secondary);
  padding: 8px 20px;
  font-size: 0.9rem;
  transition: var(--transition-base);
}
.dropdown-menu-dark .dropdown-item:hover {
  background: var(--glass-bg);
  color: #ffffff;
}

.nav-cta-btn {
  background: var(--primary-gradient);
  color: #ffffff !important;
  font-weight: 600;
  border: none;
  transition: var(--transition-base);
  box-shadow: 0 4px 15px rgba(118, 75, 162, 0.4);
}
.nav-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(118, 75, 162, 0.6);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0 80px;
  overflow: hidden;
  background: radial-gradient(ellipse at 30% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 70%),
              radial-gradient(ellipse at 70% 30%, rgba(118, 75, 162, 0.12) 0%, transparent 70%),
              var(--dark-bg);
}

/* Hero Particles Canvas */
#heroParticles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

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

.hero-badge {
  display: inline-block;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  padding: 8px 20px;
  font-size: 0.9rem;
  color: var(--accent-color);
  margin-bottom: 20px;
  animation: fadeInDown 0.8s ease;
}
.hero-badge i {
  margin-right: 6px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease 0.2s both;
}
.hero-title .gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-title .accent-text {
  color: var(--accent-color);
  text-shadow: 0 0 20px var(--accent-glow);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: 30px;
  max-width: 600px;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-stats {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
  margin-bottom: 30px;
  animation: fadeInUp 0.8s ease 0.6s both;
}
.hero-stat-item {
  text-align: center;
}
.hero-stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.8s both;
}

.hero-image-wrapper {
  position: relative;
  animation: float 6s ease-in-out infinite;
}
.hero-image-wrapper img {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(102, 126, 234, 0.15);
}
.hero-glow-orb {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(102, 126, 234, 0.25) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: -1;
  animation: pulseGlow 3s ease-in-out infinite;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-gradient {
  background: var(--primary-gradient);
  color: #ffffff;
  font-weight: 600;
  border: none;
  padding: 12px 28px;
  border-radius: 50px;
  transition: var(--transition-base);
  box-shadow: 0 4px 15px rgba(118, 75, 162, 0.4);
  position: relative;
  overflow: hidden;
}
.btn-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}
.btn-gradient:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(118, 75, 162, 0.6);
  color: #ffffff;
}
.btn-gradient:hover::before {
  left: 100%;
}

.btn-outline-glow {
  background: transparent;
  color: #ffffff;
  font-weight: 600;
  border: 2px solid var(--glass-border);
  padding: 12px 28px;
  border-radius: 50px;
  transition: var(--transition-base);
}
.btn-outline-glow:hover {
  border-color: var(--accent-color);
  box-shadow: 0 0 20px var(--accent-glow);
  color: var(--accent-color);
  transform: translateY(-3px);
}

.btn-accent {
  background: var(--accent-color);
  color: #000000;
  font-weight: 700;
  border: none;
  padding: 12px 28px;
  border-radius: 50px;
  transition: var(--transition-base);
}
.btn-accent:hover {
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateY(-3px);
  color: #000000;
}

/* ============================================================
   SECTION STYLES
   ============================================================ */
.section-padding {
  padding: 100px 0;
}
.section-dark {
  background-color: var(--dark-bg);
}
.section-surface {
  background-color: var(--dark-surface);
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-badge {
  display: inline-block;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  padding: 6px 18px;
  font-size: 0.85rem;
  color: var(--accent-color);
  font-weight: 500;
  margin-bottom: 16px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}
.section-title .gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* ============================================================
   BANNER SLIDER / CAROUSEL
   ============================================================ */
.banner-slider-section {
  padding: 40px 0;
  background: var(--dark-bg);
}
.swiper-banner {
  width: 100%;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.swiper-banner .swiper-slide {
  position: relative;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}
.swiper-banner .slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.swiper-banner .slide-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.3) 60%, rgba(0,0,0,0.7) 100%);
  z-index: 1;
}
.swiper-banner .slide-content {
  position: relative;
  z-index: 2;
  padding: 40px;
  max-width: 550px;
}
.swiper-banner .slide-content h3 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}
.swiper-banner .slide-content p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.swiper-banner .swiper-pagination-bullet {
  background: #ffffff;
  opacity: 0.5;
}
.swiper-banner .swiper-pagination-bullet-active {
  background: var(--accent-color);
  opacity: 1;
}
.swiper-banner .swiper-button-next,
.swiper-banner .swiper-button-prev {
  color: #ffffff;
  background: var(--glass-bg);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  backdrop-filter: blur(10px);
}
.swiper-banner .swiper-button-next::after,
.swiper-banner .swiper-button-prev::after {
  font-size: 1.2rem;
}

/* ============================================================
   GLASS CARDS
   ============================================================ */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 30px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity 0.5s ease;
  z-index: -1;
  border-radius: var(--border-radius-md);
}
.glass-card:hover {
  border-color: var(--glass-border-hover);
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(102, 126, 234, 0.1);
}
.glass-card:hover::before {
  opacity: 0.05;
}
.glass-card .card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius-sm);
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  box-shadow: 0 4px 15px rgba(118, 75, 162, 0.3);
}
.glass-card h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.glass-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ============================================================
   COURSE CARDS
   ============================================================ */
.course-card {
  background: var(--dark-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 35px 25px;
  text-align: center;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}
.course-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform 0.4s ease;
  transform-origin: left;
}
.course-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--glass-border-hover);
}
.course-card:hover::after {
  transform: scaleX(1);
}
.course-card .course-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background: var(--glass-bg);
  border: 2px solid var(--glass-border);
  transition: var(--transition-base);
}
.course-card:hover .course-icon {
  background: var(--primary-gradient);
  border-color: transparent;
  box-shadow: 0 0 30px rgba(102, 126, 234, 0.4);
}
.course-card h4 {
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 8px;
}
.course-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
}
.course-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--glass-bg);
  color: var(--accent-color);
  border: 1px solid var(--glass-border);
}

/* ============================================================
   TESTIMONIAL CARDS
   ============================================================ */
.testimonial-card {
  background: var(--dark-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 30px;
  transition: var(--transition-base);
}
.testimonial-card:hover {
  border-color: var(--accent-color);
  box-shadow: 0 0 30px var(--accent-glow);
}
.testimonial-card .testimonial-stars {
  color: var(--warning-color);
  margin-bottom: 12px;
}
.testimonial-card .testimonial-text {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 0.95rem;
  line-height: 1.7;
}
.testimonial-card .testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-card .testimonial-author .avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  color: #ffffff;
}
.testimonial-card .testimonial-author .author-name {
  font-weight: 600;
  font-size: 0.95rem;
}
.testimonial-card .testimonial-author .author-exam {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================================
   COUNTER STATS
   ============================================================ */
.stats-counter-wrapper {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
}
.stat-counter-item {
  text-align: center;
  padding: 20px;
}
.stat-counter-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.stat-counter-label {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 8px;
}

/* ============================================================
   FAQ ACCORDION
   ============================================================ */
.faq-accordion .accordion-item {
  background: transparent;
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm) !important;
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-accordion .accordion-button {
  background: var(--glass-bg);
  color: #ffffff;
  font-weight: 600;
  font-size: 1rem;
  padding: 18px 24px;
  box-shadow: none;
}
.faq-accordion .accordion-button:not(.collapsed) {
  background: var(--glass-bg-hover);
  color: var(--accent-color);
}
.faq-accordion .accordion-button::after {
  filter: invert(1);
}
.faq-accordion .accordion-body {
  background: var(--dark-card);
  color: var(--text-secondary);
  padding: 20px 24px;
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ============================================================
   BLOG PREVIEW CARDS
   ============================================================ */
.blog-preview-card {
  background: var(--dark-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: var(--transition-smooth);
}
.blog-preview-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--glass-border-hover);
}
.blog-preview-card .blog-img-wrapper {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.blog-preview-card .blog-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.blog-preview-card:hover .blog-img-wrapper img {
  transform: scale(1.08);
}
.blog-preview-card .blog-body {
  padding: 20px;
}
.blog-preview-card .blog-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-color);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.blog-preview-card .blog-body h5 {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 8px;
  line-height: 1.4;
}
.blog-preview-card .blog-body p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 12px;
}
.blog-preview-card .read-more {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent-color);
}
.blog-preview-card .read-more i {
  transition: transform 0.3s ease;
}
.blog-preview-card:hover .read-more i {
  transform: translateX(5px);
}

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta-section {
  background: radial-gradient(ellipse at center, rgba(102, 126, 234, 0.2) 0%, transparent 70%), var(--dark-surface);
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
  padding: 80px 0;
  text-align: center;
}
.cta-section h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-section p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 30px;
  font-size: 1.05rem;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact-info-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 25px;
  transition: var(--transition-base);
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.contact-info-card:hover {
  border-color: var(--accent-color);
  box-shadow: 0 0 20px var(--accent-glow);
}
.contact-info-card .contact-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-sm);
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-info-card h5 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.contact-info-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer-main {
  background: var(--dark-surface);
  border-top: 1px solid var(--glass-border);
  padding: 60px 0 30px;
}
.footer-main h5 {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer-main h5::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--primary-gradient);
  border-radius: 3px;
}
.footer-main ul {
  list-style: none;
  padding: 0;
}
.footer-main ul li {
  margin-bottom: 10px;
}
.footer-main ul li a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition-base);
}
.footer-main ul li a:hover {
  color: var(--accent-color);
  padding-left: 5px;
}
.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1rem;
  transition: var(--transition-base);
}
.footer-social a:hover {
  background: var(--primary-gradient);
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 4px 15px rgba(118, 75, 162, 0.4);
}
.footer-bottom {
  background: var(--dark-bg);
  padding: 20px 0;
  text-align: center;
  border-top: 1px solid var(--glass-border);
}
.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0;
}

/* ============================================================
   FLOATING BUTTONS
   ============================================================ */
.floating-buttons-wrapper {
  position: fixed;
  bottom: 30px;
  right: 30px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  align-items: flex-end;
  z-index: 9999;
}

/* WhatsApp Button */
.floating-whatsapp-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25D366;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: var(--transition-base);
  animation: whatsappPulse 2s infinite;
  text-decoration: none;
}
.floating-whatsapp-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
  color: #ffffff;
}

/* Enquiry Toggle Button */
.floating-enquiry-btn {
  background: var(--primary-gradient);
  color: #ffffff;
  border-radius: 50px;
  padding: 14px 26px;
  display: flex;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(118, 75, 162, 0.5);
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  animation: floatBtn 3s ease-in-out infinite;
}
.floating-enquiry-btn:hover {
  box-shadow: 0 8px 30px rgba(118, 75, 162, 0.7);
  transform: scale(1.03);
}
.floating-enquiry-btn .material-icons {
  margin-right: 10px;
}

/* Enquiry Modal */
.enquiry-modal .modal-content {
  background: linear-gradient(145deg, #1a1a1a, #222222);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  color: var(--text-primary);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
}
.enquiry-modal .modal-header {
  background: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
  padding: 20px 30px;
}
.enquiry-modal .modal-title {
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.enquiry-modal .btn-close {
  filter: invert(1);
}
.enquiry-modal .modal-body {
  padding: 30px;
}
.enquiry-modal .form-label {
  color: #aaaaaa;
  font-size: 0.9rem;
  margin-bottom: 8px;
  font-weight: 500;
}
.enquiry-modal .form-control,
.enquiry-modal .form-select {
  background-color: #2a2a2a;
  border: 1px solid #444;
  border-radius: 10px;
  color: #ffffff;
  padding: 12px 16px;
  transition: var(--transition-base);
}
.enquiry-modal .form-control:focus,
.enquiry-modal .form-select:focus {
  background-color: #333;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 4px rgba(0, 210, 255, 0.1);
  color: #ffffff;
}
.enquiry-modal .submit-btn {
  background: var(--primary-gradient);
  border: none;
  border-radius: 10px;
  padding: 14px;
  width: 100%;
  font-weight: 700;
  font-size: 16px;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition-base);
}
.enquiry-modal .submit-btn:hover {
  filter: brightness(1.15);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(118, 75, 162, 0.4);
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 100px;
  right: 36px;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
  backdrop-filter: blur(10px);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background: var(--primary-gradient);
  border-color: transparent;
  transform: translateY(-4px);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}
@keyframes floatBtn {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@keyframes pulseGlow {
  0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}
@keyframes whatsappPulse {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
  70% { box-shadow: 0 0 0 18px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 991.98px) {
  .section-padding { padding: 60px 0; }
  .hero-section { padding: 100px 0 60px; min-height: auto; }
  .hero-title { font-size: 2rem; }
  .hero-stats { gap: 20px; }
  .swiper-banner .swiper-slide { height: 300px; }
  .swiper-banner .slide-content h3 { font-size: 1.5rem; }
  .stats-counter-number { font-size: 2.2rem; }
  .floating-buttons-wrapper { bottom: 20px; right: 20px; gap: 10px; }
  .floating-whatsapp-btn { width: 50px; height: 50px; font-size: 1.3rem; }
  .floating-enquiry-btn { padding: 10px 20px; font-size: 13px; }
}

@media (max-width: 767.98px) {
  .hero-title { font-size: 1.7rem; }
  .hero-stats { flex-direction: column; gap: 10px; align-items: flex-start; }
  .hero-stat-item { text-align: left; }
  .hero-buttons { flex-direction: column; }
  .swiper-banner .swiper-slide { height: 240px; }
  .swiper-banner .slide-content { padding: 20px; }
  .swiper-banner .slide-content h3 { font-size: 1.2rem; }
  .section-title { font-size: 1.6rem; }
  .glass-card { padding: 20px; }
  .footer-main h5 { margin-top: 20px; }
  .back-to-top { bottom: 80px; right: 24px; }
}

/* ============================================================
   DARK MODE OVERRIDES (Bootstrap Dark compatibility)
   ============================================================ */
[data-bs-theme="dark"] .dropdown-menu-dark {
  --bs-dropdown-bg: rgba(20, 20, 20, 0.98);
}

/* Smooth overlay for banner slides */
.slide-overlay-dark {
  background: linear-gradient(135deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.4) 50%, rgba(0,0,0,0.8) 100%);
}

/* Physics-themed decorative elements */
.physics-decoration {
  position: absolute;
  pointer-events: none;
  opacity: 0.03;
  z-index: 0;
}
.physics-atom {
  width: 200px;
  height: 200px;
  border: 2px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  position: relative;
}

/* Newsletter form */
.newsletter-form .form-control {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: #ffffff;
  border-radius: 50px 0 0 50px;
  padding: 12px 20px;
}
.newsletter-form .btn-subscribe {
  border-radius: 0 50px 50px 0;
  padding: 12px 24px;
}

/* ==========================================
   INNER PAGES CSS (Added by Architecture Refactor)
========================================== */

/* Submenu Dropdown CSS */
.dropdown-submenu {
    position: relative;
}
.dropdown-submenu > .dropdown-menu {
    top: 0;
    left: 100%;
    margin-top: -6px;
    margin-left: -1px;
    border-radius: 0 0.5rem 0.5rem 0.5rem;
    display: none;
}
.dropdown-submenu:hover > .dropdown-menu {
    display: block;
}
@media (max-width: 991px) {
    .dropdown-submenu > .dropdown-menu {
        left: 0;
        top: 100%;
        margin-top: 0;
        display: block; /* Bootstrap handle mobile collapse */
    }
}

/* Page Hero CSS (Inner pages) */
.page-hero {
    position: relative;
    padding: 120px 0 80px;
    min-height: 50vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(10, 10, 10, 0.95) 0%, rgba(20, 20, 20, 0.95) 100%);
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.page-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0,212,255,0.05) 0%, rgba(0,0,0,0) 50%);
    z-index: 0;
}

.page-hero .container {
    position: relative;
    z-index: 2;
}

.page-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2rem;
}

@media (max-width: 768px) {
    .page-title {
        font-size: 2.5rem;
    }
}

/* Breadcrumb Styling */
.breadcrumb-container {
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 15px 0;
}

.breadcrumb {
    margin: 0;
    font-size: 0.9rem;
}

.breadcrumb-item a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.breadcrumb-item a:hover {
    color: #fff;
}

.breadcrumb-item.active {
    color: var(--text-secondary);
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "\f105";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    color: rgba(255, 255, 255, 0.3);
}

/* Inner Page Content Sections */
.inner-section {
    padding: 80px 0;
}