/* ==========================================================================
   BHASKAR CLASSES BARMER - CLEAN PROFESSIONAL DESIGN SYSTEM
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+Devanagari:wght@400;500;600;700;800&display=swap');

:root {
  /* Brand Tokens: Deep Logo Navy & Electric Cyan */
  --color-primary:        #1E2B58;
  --color-primary-hover:  #162042;
  --color-primary-light:  #F0F4F8;
  --color-primary-100:    #E0E7FF;

  /* Accent: Logo Cyan / Electric Blue */
  --color-accent:         #00A3E8;
  --color-accent-hover:   #0284C7;
  --color-accent-light:   #E0F2FE;
  --color-accent-100:     #BAE6FD;

  /* Neutrals */
  --color-text:           #1E2B58;
  --color-text-secondary: #475569;
  --color-text-muted:     #64748B;
  --color-bg:             #F8FAFC;
  --color-bg-alt:         #FFFFFF;
  --color-border:         #E2E8F0;
  --color-border-hover:   #CBD5E1;

  /* Surface & Semantic Aliases */
  --bg-page:              #F8FAFC;
  --bg-surface:           #FFFFFF;
  --text-heading:         #1E2B58;
  --text-body:            #475569;
  --text-muted:           #64748B;
  --border-subtle:        #E2E8F0;

  /* Semantic */
  --color-success:        #059669;
  --color-success-hover:  #047857;
  --color-success-light:  #ECFDF5;
  --color-danger:         #DC2626;
  --color-info:           #00A3E8;

  /* Hero Tokens */
  --hero-highlight:       #00A3E8;
  --hero-muted:           #475569;
  --hero-surface:         #FFFFFF;
  --hero-border:          #E2E8F0;

  /* Elevation & Geometry */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(30, 43, 88, 0.06), 0 2px 4px -2px rgba(30, 43, 88, 0.04);
  --shadow-lg: 0 10px 25px -5px rgba(30, 43, 88, 0.08), 0 4px 6px -4px rgba(30, 43, 88, 0.04);

  --radius-card: 8px;
  --radius-btn: 6px;
  --radius-input: 4px;
  --radius-pill: 9999px;

  --max-width: 1200px;
  --font-family: 'Noto Sans Devanagari', 'Inter', system-ui, -apple-system, sans-serif;
}

/* --------------------------------------------------------------------------
   RESET & BASE STYLES
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  overflow-wrap: break-word;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden !important;
  max-width: 100% !important;
  width: 100% !important;
  position: relative;
  touch-action: pan-y;
  overscroll-behavior-x: none;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden !important;
  max-width: 100% !important;
  width: 100% !important;
  position: relative;
  touch-action: pan-y;
  overscroll-behavior-x: none;
}

/* Modern App-Grade Sleek Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(30, 43, 88, 0.2);
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(30, 43, 88, 0.4);
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   LAYOUT UTILITIES
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.section {
  padding: 4rem 0;
  overflow-x: clip;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

/* --------------------------------------------------------------------------
   SECTION BACKGROUND ALTERNATION (Visual Rhythm - 60-30-10 System)
   -------------------------------------------------------------------------- */
.hero {
  background-color: var(--color-primary);
  color: #ffffff;
}

#courses {
  background-color: var(--color-bg);
}

#book-ad,
.book-offer {
  background-color: var(--color-accent-light);
}

#toppers {
  background-color: var(--color-bg-alt);
}

#videos {
  background-color: var(--color-bg);
}

#books {
  background-color: var(--color-bg-alt);
}

#faculty {
  background-color: var(--color-bg);
}

#faculty + section.section {
  background-color: var(--color-bg-alt);
}

#contact {
  background-color: var(--color-bg);
}


.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.75rem;
  border: 1px solid rgba(30, 58, 95, 0.15);
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   BUTTONS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6875rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-btn);
  transition: all 0.15s ease;
  white-space: nowrap;
  text-align: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border: 1px solid var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: #ffffff;
}

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
  border: 1px solid var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #ffffff;
}

.btn-success {
  background-color: var(--color-success);
  color: #ffffff;
  border: 1px solid var(--color-success);
}

.btn-success:hover {
  background-color: var(--color-success-hover);
  color: #ffffff;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary-light);
}

.btn-outline-white {
  background-color: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
}

.btn-sm {
  padding: 0.4375rem 0.875rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1.0625rem;
}

.btn-full {
  width: 100%;
}

/* --------------------------------------------------------------------------
   TOP INFO BAR
   -------------------------------------------------------------------------- */
.topbar {
  background-color: var(--color-primary-hover);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.8125rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.topbar-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.topbar-left, .topbar-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.topbar-badge {
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-pill);
  letter-spacing: 0.05em;
}

.topbar-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: rgba(255, 255, 255, 0.85);
}

.topbar-link:hover {
  color: #ffffff;
}

.topbar-social {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.topbar-social a {
  color: rgba(255, 255, 255, 0.85);
}

.topbar-social a:hover {
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   FIXED TOP HEADER & NAVIGATION (Always visible on scroll across all pages)
   -------------------------------------------------------------------------- */
:root {
  --header-height: 4.5rem;
}

@media (max-width: 1024px) {
  :root {
    --header-height: 56px;
  }
}

html {
  scroll-padding-top: calc(var(--header-height) + 16px);
}

.header {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  z-index: 1000 !important;
  background-color: #ffffff !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08) !important;
  border-bottom: 1px solid var(--color-border) !important;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}

body:not(.portal-page):not(.admin-page) {
  padding-top: var(--header-height) !important;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-img {
  height: 52px;
  width: auto;
  object-fit: contain;
  display: block;
  transition: transform 0.15s ease;
}

.brand:hover .brand-logo-img {
  transform: scale(1.02);
}

.brand-logo-wrap {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-btn);
  background-color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.brand-logo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

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

.brand-title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
}

.brand-title span {
  color: var(--color-accent);
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 0.5rem 0.25rem;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

@media (max-width: 1200px) and (min-width: 1025px) {
  .header-inner {
    gap: 0.75rem;
  }
  .nav {
    gap: 0.75rem;
  }
  .nav-link {
    font-size: 0.85rem;
    padding: 0.5rem 0.15rem;
  }
  .header-actions {
    gap: 0.35rem;
  }
  .btn-desk {
    padding: 0.35rem 0.6rem;
    font-size: 0.75rem;
  }
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.nav-link.special {
  color: var(--color-accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.header-call-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-btn);
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease;
  flex-shrink: 0;
}

.header-call-btn:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

.menu-toggle {
  display: none;
  font-size: 1.25rem;
  color: var(--color-primary);
  padding: 0.5rem;
  border-radius: var(--radius-btn);
}

.menu-toggle:hover {
  background-color: var(--color-bg-alt);
}

/* Mobile Dropdown */
.mobile-menu {
  display: none;
  background-color: #ffffff;
  border-top: 1px solid var(--color-border);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  padding: 1rem 1.25rem 1.5rem;
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-menu.open {
  display: block;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.mobile-nav .nav-link {
  padding: 0.625rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
}

.mobile-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 0.5rem;
}

/* --------------------------------------------------------------------------
   HERO SECTION (Clean Light Background, Deep Navy & Cyan Brand Styling)
   -------------------------------------------------------------------------- */
.hero {
  background-color: var(--bg-page);
  color: var(--text-body);
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: #FFFFFF;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  color: #1E2B58;
}

.hero-title .highlight {
  color: #00A3E8;
}

.hero-desc {
  font-size: 1.125rem;
  color: #475569;
  line-height: 1.6;
  margin-bottom: 2rem;
  max-width: 620px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.metric-card {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-card);
  padding: 1rem 0.75rem;
  text-align: center;
  box-shadow: 0 1px 3px rgba(30, 43, 88, 0.05);
}

.metric-val {
  font-size: 1.625rem;
  font-weight: 800;
  color: #00A3E8;
  line-height: 1.2;
}

.metric-label {
  font-size: 0.8125rem;
  color: #64748B;
  margin-top: 0.25rem;
  font-weight: 500;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.hero-ctas .btn-outline-white,
.hero-ctas .btn-secondary-light {
  background-color: #FFFFFF;
  border: 1px solid #CBD5E1;
  color: #1E2B58;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.hero-ctas .btn-outline-white:hover,
.hero-ctas .btn-secondary-light:hover {
  background-color: #F8FAFC;
  border-color: #94A3B8;
  color: #1E2B58;
}

.hero-contact-strip {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.hero-contact-strip a {
  color: #1E2B58;
  font-weight: 600;
}

.hero-contact-strip a:hover {
  color: #00A3E8;
  text-decoration: underline;
}

/* Hero Right Side Summary Card */
.hero-card {
  background-color: #FFFFFF;
  color: var(--color-text);
  border-radius: var(--radius-card);
  box-shadow: 0 10px 25px -5px rgba(30, 43, 88, 0.08);
  border: 1px solid #E2E8F0;
  overflow: hidden;
}

.hero-card-header {
  padding: 1.25rem 1.5rem;
  background-color: #F8FAFC;
  border-bottom: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero-card-faculty {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-card-avatar {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-btn);
  background: linear-gradient(180deg, #F0F4F8 0%, #E2E8F0 100%);
  border: 1px solid #E2E8F0;
  color: #1E2B58;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  overflow: hidden;
}

.hero-card-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.hero-card-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #1E2B58;
}

.hero-card-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.hero-card-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  color: #FFFFFF;
  background-color: #1E2B58;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

.hero-card-body {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  background-color: #FFFFFF;
}

.hero-course-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-card);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.hero-course-item:hover {
  border-color: #00A3E8;
  background-color: #FFFFFF;
}

.hero-course-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: #1E2B58;
}

.hero-course-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.hero-course-price {
  text-align: right;
}

.hero-course-price .curr {
  font-size: 1rem;
  font-weight: 800;
  color: #00A3E8;
}

.hero-course-price .old {
  font-size: 0.75rem;
  color: #94A3B8;
  text-decoration: line-through;
}

/* --------------------------------------------------------------------------
   UPDATES TICKER (Solid Deep Navy, White Text, Cyan Badge)
   -------------------------------------------------------------------------- */
.ticker-bar {
  background-color: #1E2B58;
  color: #FFFFFF;
  font-size: 0.875rem;
  padding: 0.625rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.ticker-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.ticker-label {
  background-color: #00A3E8;
  color: #FFFFFF;
  font-size: 0.6875rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 0.25rem 0.625rem;
  border-radius: 4px;
  flex-shrink: 0;
  letter-spacing: 0.05em;
}

.ticker-track {
  overflow: hidden;
  white-space: nowrap;
  flex: 1;
  position: relative;
}

.ticker-text {
  display: inline-block;
  white-space: nowrap;
  color: #FFFFFF;
  animation: tickerScroll 28s linear infinite;
  will-change: transform;
}

.ticker-text span {
  color: #FFFFFF;
}

.ticker-text:hover {
  animation-play-state: paused;
}

.ticker-text span {
  padding: 0 1.5rem;
}

@keyframes tickerScroll {
  0% { transform: translateX(100%); }
  100% { transform: translateX(-100%); }
}

/* --------------------------------------------------------------------------
   COURSES SECTION (Unified single-surface cards, brand-aligned)
   -------------------------------------------------------------------------- */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  align-items: stretch;
}

.course-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 20px rgba(30, 43, 88, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
}

.course-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(30, 43, 88, 0.1);
  border-color: #CBD5E1;
}

/* Featured / Top Choice Card Highlight (Middle) */
.course-card.featured {
  border: 2px solid var(--color-accent);
  box-shadow: 0 10px 25px -5px rgba(0, 163, 232, 0.18), 0 4px 12px rgba(30, 43, 88, 0.05);
  transform: translateY(-4px);
}

.course-card.featured:hover {
  transform: translateY(-7px);
  box-shadow: 0 16px 32px -5px rgba(0, 163, 232, 0.25), 0 6px 16px rgba(30, 43, 88, 0.08);
}

/* Badges */
.course-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.725rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
  width: fit-content;
}

.badge-default {
  background-color: #F1F5F9;
  color: var(--color-primary);
}

.badge-featured {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

.badge-module {
  background-color: var(--color-accent-light);
  color: var(--color-accent-hover);
}

/* Title & Subtitle */
.course-card-top {
  margin-bottom: 1.25rem;
}

.course-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.35;
  margin-bottom: 0.35rem;
}

.course-card-sub {
  font-size: 0.825rem;
  color: #64748B;
  line-height: 1.4;
}

/* Meta list */
.course-meta-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.875rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
}

.course-meta-item {
  display: flex;
  justify-content: space-between;
  color: #64748B;
}

.course-meta-item strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* Features list */
.course-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.875rem;
  margin-bottom: 1.75rem;
  flex: 1;
}

.course-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #334155;
  line-height: 1.45;
}

.course-features li i {
  color: var(--color-accent); /* Clean Electric Cyan #00A3E8 checkmarks */
  margin-top: 0.2rem;
  font-size: 0.925rem;
  flex-shrink: 0;
}

/* Pricing & Discount */
.course-footer {
  margin-top: auto;
}

.course-pricing {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.pricing-values {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.course-price-now {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--color-primary);
}

.course-price-now.featured-price {
  color: var(--color-accent);
}

.course-price-old {
  font-size: 0.875rem;
  color: #94A3B8;
  text-decoration: line-through;
}

.discount-pill {
  background-color: var(--color-accent-light);
  color: var(--color-accent-hover);
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.8rem;
}

/* Enroll buttons */
.course-card .btn-enroll {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--color-primary);
  color: #FFFFFF;
  border: none;
  border-radius: 8px;
  padding: 12px;
  font-weight: 600;
  font-size: 0.925rem;
  text-align: center;
  transition: background-color 0.2s ease, transform 0.15s ease;
  width: 100%;
}

.course-card .btn-enroll:hover {
  background-color: #162042;
  color: #FFFFFF;
}

.course-card.featured .btn-enroll {
  background-color: var(--color-accent);
}

.course-card.featured .btn-enroll:hover {
  background-color: var(--color-accent-hover);
}

/* Test Series Promo Banner - Clean Institutional Card */
.test-series-banner {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-top: 4px solid #1E2B58;
  border-radius: 14px;
  padding: 28px 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  box-shadow: 0 10px 25px -5px rgba(30, 43, 88, 0.07), 0 4px 6px -4px rgba(30, 43, 88, 0.03);
  margin-top: 40px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.test-series-banner:hover {
  box-shadow: 0 14px 32px -5px rgba(30, 43, 88, 0.12), 0 6px 12px -4px rgba(30, 43, 88, 0.06);
}

.banner-left {
  flex: 1;
}

.banner-title {
  color: #1E2B58;
  font-size: 1.35rem;
  font-weight: 800;
  margin: 0 0 14px 0;
  padding-bottom: 10px;
  border-bottom: 1px solid #F1F5F9;
}

.banner-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(200px, 1fr));
  gap: 10px 20px;
}

.banner-features li {
  color: #475569;
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.banner-features .dot {
  color: #059669;
  font-weight: 800;
  font-size: 1rem;
}

.banner-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.banner-price-card {
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  box-shadow: none !important;
  text-align: right;
  min-width: 140px;
}

.price-badge {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  background: #EFF6FF;
  border: 1.5px solid #BAE6FD;
  padding: 6px 16px;
  border-radius: 9999px;
  box-shadow: 0 2px 6px rgba(0, 163, 232, 0.08);
  margin-bottom: 6px;
}

.price-badge .price-label,
.price-label {
  display: inline-block;
  font-size: 0.82rem;
  color: #0284C7;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0;
}

.price-badge .price-val,
.price-val {
  font-size: 1.45rem;
  font-weight: 800;
  color: #1E2B58;
  line-height: 1;
  margin: 0;
}

.price-mrp {
  font-size: 0.85rem;
  color: #94A3B8;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
}

.price-mrp del {
  color: #94A3B8;
  font-size: 0.88rem;
}

.price-mrp span {
  background: #ECFDF5;
  color: #047857;
  border: 1px solid #A7F3D0;
  font-weight: 700;
  font-size: 0.78rem;
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  text-decoration: none;
}

.banner-cta {
  background-color: #1E2B58;
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: 8px;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(30, 43, 88, 0.18);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.banner-cta:hover {
  background-color: #00A3E8;
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 163, 232, 0.35);
}

@media (max-width: 768px) {
  .test-series-banner {
    flex-direction: column;
    text-align: center;
    padding: 24px 18px;
    gap: 20px;
  }
  .banner-left {
    width: 100%;
  }
  .banner-features {
    grid-template-columns: 1fr;
    text-align: left;
    gap: 8px;
  }
  .banner-right {
    flex-direction: column;
    width: 100%;
    gap: 16px;
  }
  .banner-price-card {
    text-align: center;
    width: 100%;
  }
  .price-badge {
    margin: 0 auto 6px auto;
  }
  .price-mrp {
    justify-content: center;
  }
  .banner-cta {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
}

/* --------------------------------------------------------------------------
   BOOK OFFER SECTION (Warm Orange, Clear, Focused)
   -------------------------------------------------------------------------- */
.book-offer {
  background-color: var(--color-accent-light);
  border-top: 1px solid var(--color-accent-100);
  border-bottom: 1px solid var(--color-accent-100);
}

.book-offer-card {
  background-color: #ffffff;
  border: 2px solid var(--color-accent-100);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 2.5rem;
  align-items: center;
}

.book-offer-visual {
  text-align: center;
  position: relative;
}

.book-offer-cover {
  max-width: 260px;
  margin: 0 auto;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-alt);
  overflow: hidden;
}

.book-price-badge {
  position: absolute;
  top: -0.75rem;
  right: 1.5rem;
  background-color: var(--color-accent);
  color: #ffffff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.book-price-badge .label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.book-price-badge .amt {
  font-size: 1.375rem;
  font-weight: 800;
  line-height: 1.1;
}

.book-price-badge .old {
  font-size: 0.6875rem;
  text-decoration: line-through;
  opacity: 0.85;
}

.book-offer-details {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.book-offer-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.book-offer-tag {
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.book-offer-publisher {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
}

.book-offer-title {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.25;
}

.book-offer-author {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.book-offer-author strong {
  color: var(--color-text);
}

.book-usps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin: 0.5rem 0;
}

.book-usp-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-alt);
  padding: 0.625rem;
  border-radius: 4px;
  border: 1px solid var(--color-border);
}

.book-usp-item i {
  color: var(--color-accent);
  margin-top: 0.15rem;
}

.book-offer-pricing-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.book-offer-price-display .price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
}

.book-offer-price-display .old {
  font-size: 1rem;
  color: var(--color-text-muted);
  text-decoration: line-through;
  margin-left: 0.5rem;
}

.book-offer-price-display .note {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  display: block;
}

.book-offer-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   TOPPERS HERO & STATS - CELEBRATORY SOCIAL PROOF HALL OF FAME
   ========================================================================== */
.toppers-hero-section {
  background-color: #F8FAFC;
  padding: 3.5rem 0 3rem 0;
  border-bottom: 1px solid #E2E8F0;
}

.toppers-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.toppers-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: #E0F2FE;
  color: #00A3E8;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 6px 18px;
  border-radius: 9999px;
  margin-bottom: 1rem;
}

.toppers-title {
  color: #1E2B58;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 0.75rem 0;
}

.toppers-subtitle {
  color: #475569;
  max-width: 680px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.6;
}

/* Stats Grid (4 Metric Cards) */
.toppers-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.topper-stat-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  padding: 24px 18px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(30, 43, 88, 0.05);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.topper-stat-card:hover {
  transform: translateY(-3px);
  border-color: #00A3E8;
  box-shadow: 0 10px 24px rgba(0, 163, 232, 0.12);
}

.stat-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #F0F4F8;
  color: #00A3E8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  margin: 0 auto;
}

.topper-stat-num {
  color: #1E2B58;
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.2;
  margin: 8px 0 4px 0;
}

.topper-stat-num.highlight {
  color: #00A3E8;
}

.topper-stat-primary {
  color: #334155;
  font-weight: 600;
  font-size: 0.88rem;
  line-height: 1.35;
}

.topper-stat-secondary {
  color: #64748B;
  font-size: 0.78rem;
  margin-top: 3px;
  line-height: 1.3;
}

/* --------------------------------------------------------------------------
   TOPPERS SECTION (Clean 3+3 grid, photo + rank badge overlay)
   -------------------------------------------------------------------------- */
.topper-banner-wrap {
  margin-bottom: 3rem;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  background-color: var(--color-bg-alt);
}

.topper-category-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
}

.topper-category-title h3 {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-primary);
}

.topper-category-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-100);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
}

.topper-swipe-hint {
  display: none;
  font-size: 0.75rem;
  color: #0284C7;
  font-weight: 700;
  background: #E0F2FE;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  align-items: center;
  gap: 5px;
}

.toppers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  margin-bottom: 3rem;
}

.topper-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  padding: 0;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.topper-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.topper-photo-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  background-color: var(--color-bg-alt);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.topper-photo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.topper-card:hover .topper-photo-wrap img {
  transform: scale(1.02);
}

/* --------------------------------------------------------------------------
   VIDEO LECTURES SECTION
   -------------------------------------------------------------------------- */
.videos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.video-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.video-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
}

.video-thumb-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: #000000;
  cursor: pointer;
  overflow: hidden;
}

.video-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.2s ease;
}

.video-thumb-wrap:hover img {
  transform: scale(1.03);
}

.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 50%;
  background-color: rgba(220, 38, 38, 0.95);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  transition: transform 0.15s ease;
}

.video-thumb-wrap:hover .video-play-btn {
  transform: translate(-50%, -50%) scale(1.1);
}

.video-duration {
  position: absolute;
  bottom: 0.5rem;
  right: 0.5rem;
  background-color: rgba(0, 0, 0, 0.8);
  color: #ffffff;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
}

.video-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex: 1;
  gap: 0.75rem;
}

.video-card-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.video-card-action {
  font-size: 0.8125rem;
  font-weight: 600;
  color: #dc2626;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.video-card-action:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   BOOKS SECTION (2 books side-by-side + combo bar)
   -------------------------------------------------------------------------- */
.books-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

.book-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.book-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
}

.book-card-inner {
  display: grid;
  grid-template-columns: 46% 1fr;
  gap: 1.5rem;
  align-items: center;
}

.book-card-img {
  width: 100%;
  max-width: 100%;
  border-radius: 6px;
  box-shadow: 0 4px 14px rgba(30, 43, 88, 0.12);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-alt);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
}

.book-card-info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.book-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  width: fit-content;
}

.book-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.3;
}

.book-card-author {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.book-card-author strong {
  color: var(--color-text);
}

.book-card-points {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-top: 0.25rem;
}

.book-card-points li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.book-card-points li i {
  color: var(--color-success);
  font-size: 0.75rem;
}

.book-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  gap: 0.75rem;
}

.book-card-price {
  flex: 1;
  min-width: 0;
}

.book-card-price .price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  white-space: nowrap;
  line-height: 1.2;
}

.book-card-price .note {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  display: block;
  margin-top: 2px;
}

.book-card-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.book-card-footer .btn {
  white-space: nowrap;
  flex-shrink: 0;
}

/* Combo Offer Banner - Clean Institutional Card Matching Test Series Banner */
.combo-banner {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-top: 4px solid #1E2B58;
  border-radius: 14px;
  padding: 28px 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  box-shadow: 0 10px 25px -5px rgba(30, 43, 88, 0.07), 0 4px 6px -4px rgba(30, 43, 88, 0.03);
  margin-top: 40px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.combo-banner:hover {
  box-shadow: 0 14px 32px -5px rgba(30, 43, 88, 0.12), 0 6px 12px -4px rgba(30, 43, 88, 0.06);
}

.combo-banner-left {
  flex: 1;
}

.combo-banner-title {
  color: #1E2B58;
  font-size: 1.35rem;
  font-weight: 800;
  margin: 0 0 14px 0;
  padding-bottom: 10px;
  border-bottom: 1px solid #F1F5F9;
}

.combo-banner-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(200px, 1fr));
  gap: 10px 20px;
}

.combo-banner-features li {
  color: #475569;
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.combo-banner-features .dot {
  color: #059669;
  font-weight: 800;
  font-size: 1rem;
}

.combo-banner-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.combo-price-card {
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  box-shadow: none !important;
  text-align: right;
  min-width: 140px;
}

.combo-price-badge {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  background: #EFF6FF;
  border: 1.5px solid #BAE6FD;
  padding: 6px 16px;
  border-radius: 9999px;
  box-shadow: 0 2px 6px rgba(0, 163, 232, 0.08);
  margin-bottom: 6px;
}

.combo-price-badge .combo-price-label,
.combo-price-label {
  display: inline-block;
  font-size: 0.82rem;
  color: #0284C7;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0;
}

.combo-price-badge .combo-price-val,
.combo-price-val {
  font-size: 1.45rem;
  font-weight: 800;
  color: #1E2B58;
  line-height: 1;
  margin: 0;
}

.combo-price-mrp {
  font-size: 0.85rem;
  color: #94A3B8;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
}

.combo-price-mrp del {
  color: #94A3B8;
  font-size: 0.88rem;
}

.combo-price-mrp span {
  background: #ECFDF5;
  color: #047857;
  border: 1px solid #A7F3D0;
  font-weight: 700;
  font-size: 0.78rem;
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  text-decoration: none;
}

.combo-cta {
  background-color: #059669;
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: 8px;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.2);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.combo-cta:hover {
  background-color: #047857;
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(5, 150, 105, 0.35);
}

@media (max-width: 768px) {
  .combo-banner {
    flex-direction: column;
    text-align: center;
    padding: 24px 18px;
    gap: 20px;
  }
  .combo-banner-left {
    width: 100%;
  }
  .combo-banner-features {
    grid-template-columns: 1fr;
    text-align: left;
    gap: 8px;
  }
  .combo-banner-right {
    flex-direction: column;
    width: 100%;
    gap: 16px;
  }
  .combo-price-card {
    text-align: center;
    width: 100%;
  }
  .combo-price-badge {
    margin: 0 auto 6px auto;
  }
  .combo-price-mrp {
    justify-content: center;
  }
  .combo-cta {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
}

/* --------------------------------------------------------------------------
   FACULTY SECTION
   -------------------------------------------------------------------------- */
.faculty-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 2.5rem;
  align-items: center;
}

.faculty-photo-wrap {
  text-align: center;
}

.faculty-photo {
  width: 100%;
  max-width: 280px;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  margin: 0 auto 1rem;
  background: linear-gradient(180deg, #F8FAFC 0%, #E2E8F0 100%);
}

.faculty-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.faculty-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.faculty-badges span {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.faculty-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faculty-quote {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.4;
  border-left: 4px solid var(--color-accent);
  padding-left: 1rem;
}

.faculty-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faculty-pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 0.5rem 0;
}

.pillar-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background-color: var(--color-bg-alt);
  padding: 0.875rem;
  border-radius: var(--radius-btn);
  border: 1px solid var(--color-border);
}

.pillar-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-btn);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.pillar-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
}

.pillar-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.faculty-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 0.5rem;
}

/* --------------------------------------------------------------------------
   WHY CHOOSE US / FEATURES
   -------------------------------------------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 1.75rem 1.25rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  transition: transform 0.15s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.feature-icon svg,
.pillar-icon svg,
.contact-card-icon svg {
  width: 1.4rem;
  height: 1.4rem;
  display: block;
  stroke: currentColor;
}

.bottom-nav-item svg {
  width: 1.25rem;
  height: 1.25rem;
  display: block;
  stroke: currentColor;
  margin-bottom: 2px;
}

.feature-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.feature-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   APP DOWNLOAD SECTION
   -------------------------------------------------------------------------- */
.app-section {
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 4rem 0;
}

.app-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.app-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: #ffffff;
}

.app-desc {
  font-size: 1rem;
  color: var(--hero-muted);
  line-height: 1.6;
  margin-bottom: 1.75rem;
  max-width: 580px;
}

.app-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.playstore-download-card {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 0.75rem 1.4rem;
  border-radius: 12px;
  color: #ffffff;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  cursor: pointer;
  text-align: center;
}

.playstore-download-card:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
  color: #ffffff;
}

.playstore-icon-svg {
  width: 32px;
  height: 32px;
  display: block;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.25));
}

.playstore-download-text {
  font-size: 0.88rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.app-org-code {
  background-color: var(--hero-surface);
  border: 1px solid var(--hero-border);
  border-radius: var(--radius-card);
  padding: 0.875rem 1.25rem;
  font-size: 0.875rem;
  color: var(--hero-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.app-org-code strong {
  color: var(--color-accent);
  font-size: 1.125rem;
  letter-spacing: 0.05em;
  font-family: monospace;
}

.app-preview-card {
  background-color: #ffffff;
  color: var(--color-text);
  border-radius: var(--radius-card);
  padding: 1.75rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  max-width: 320px;
  margin: 0 auto;
}

.app-preview-icon {
  width: 4rem;
  height: 4rem;
  border-radius: 12px;
  background-color: var(--color-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 900;
  margin: 0 auto 0.75rem;
}

.app-preview-name {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-primary);
}

.app-preview-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.app-features-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-align: center;
  font-size: 0.8125rem;
}

.app-features-list li {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   CONTACT & INQUIRY SECTION
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.5rem;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-card-icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-btn);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.contact-card-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.contact-card-val {
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--color-primary);
}

.contact-card-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.contact-form-wrap {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.contact-form-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.contact-form-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 0.35rem;
}

.form-label .req {
  color: var(--color-danger);
}

.form-control {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  color: var(--color-text);
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-input);
  outline: none;
  transition: border-color 0.15s ease;
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(30, 58, 95, 0.1);
}

textarea.form-control {
  resize: vertical;
}

.form-status {
  margin-top: 0.75rem;
  padding: 0.75rem;
  border-radius: var(--radius-input);
  font-size: 0.8125rem;
  display: none;
}

.form-status.success {
  display: block;
  background-color: var(--color-success-light);
  color: var(--color-success-hover);
  border: 1px solid var(--color-success-light);
  background-color: var(--color-success-light);
}

/* --------------------------------------------------------------------------
   SOCIAL MEDIA SECTION
   -------------------------------------------------------------------------- */
.social-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.social-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.social-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.social-icon-wrap {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: #ffffff;
  flex-shrink: 0;
}

.social-icon-wrap.youtube { background-color: #dc2626; }
.social-icon-wrap.telegram { background-color: #0284c7; }
.social-icon-wrap.instagram { background-color: #d946ef; }
.social-icon-wrap.facebook { background-color: #2563eb; }

.social-meta-title {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.social-meta-handle {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
}

.social-meta-desc {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   FOOTER (Black Noisy Texture & Modern Contrast)
   -------------------------------------------------------------------------- */
.footer {
  position: relative;
  background-color: #08090c;
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 163, 232, 0.09) 0%, transparent 70%),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.08'/%3E%3C/svg%3E"),
    url('noise.png');
  background-repeat: no-repeat, repeat, repeat;
  background-size: 100% 100%, 160px 160px, 80px 80px;
  color: #94a3b8;
  font-size: 0.875rem;
  padding: 3.75rem 0 1.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

/* Subtle top highlight line */
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 163, 232, 0.4), rgba(255, 255, 255, 0.2), transparent);
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
  position: relative;
  z-index: 1;
}

.footer-col-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  letter-spacing: 0.02em;
}

.footer-desc {
  font-size: 0.8125rem;
  line-height: 1.65;
  margin: 1rem 0;
  color: #94a3b8;
}

.footer .topbar-social {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1rem;
}

.footer .topbar-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #cbd5e1;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.footer .topbar-social a:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 163, 232, 0.35);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.8125rem;
}

.footer-links a {
  color: #94a3b8;
  transition: all 0.18s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: #38bdf8;
  padding-left: 0.25rem;
}

.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.8125rem;
  color: #94a3b8;
  line-height: 1.6;
}

.footer-contact-info strong {
  color: #f8fafc;
}

.footer-contact-info a {
  color: #38bdf8;
  font-weight: 600;
  transition: color 0.15s ease;
}

.footer-contact-info a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.78rem;
  color: #64748b;
  position: relative;
  z-index: 1;
}

.footer-bottom strong {
  color: #cbd5e1;
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-bottom-links a, .footer-bottom-links button {
  color: #64748b;
  font-size: 0.78rem;
  transition: color 0.15s ease;
}

.footer-bottom-links a:hover, .footer-bottom-links button:hover {
  color: #ffffff;
}

/* Floating WhatsApp Button */
.whatsapp-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 30;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background-color: var(--color-success);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.875rem;
  box-shadow: var(--shadow-lg);
  transition: transform 0.15s ease;
}

.whatsapp-float:hover {
  transform: scale(1.08);
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   MODAL SYSTEM (Clean, Centered, Accessible, Multi-modal support)
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  background-color: rgba(15, 30, 51, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  overflow-y: auto;
}

.modal-overlay.active {
  display: flex;
}

.modal-dialog {
  background-color: #ffffff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  width: 100%;
  max-width: 580px;
  position: relative;
  overflow: hidden;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-dialog.lg {
  max-width: 900px;
}

.modal-dialog.xl {
  max-width: 1080px;
}

.modal-drag-handle {
  display: none;
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--color-bg-alt);
  flex-shrink: 0;
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-primary);
}

.modal-close {
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-muted);
  padding: 0.25rem;
  border-radius: 4px;
}

.modal-close:hover {
  color: var(--color-text);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

/* Tab Navigation inside Modals (Student & Admin) */
.tab-nav {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1.25rem;
  overflow-x: auto;
  flex-shrink: 0;
}

.tab-btn {
  padding: 0.625rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.tab-btn:hover {
  color: var(--color-primary);
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 700;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* Tables in Admin / Student Dashboard */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
}

.clean-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
  text-align: left;
}

.clean-table th {
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
  font-weight: 700;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.clean-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.clean-table tr:last-child td {
  border-bottom: none;
}

.clean-table tr:hover td {
  background-color: var(--color-bg-alt);
}

/* Dashboard KPI row */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  padding: 1rem;
  text-align: center;
}

.kpi-card .val {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
}

.kpi-card .lbl {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  font-weight: 700;
  margin-top: 0.25rem;
}

/* 24 Chapters Index Modal Content */
.index-list-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.index-chapter-item {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  padding: 0.625rem 0.75rem;
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.index-chapter-num {
  font-weight: 800;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  border: 1px solid var(--color-accent-100);
  width: 1.625rem;
  height: 1.625rem;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   BOTTOM NAVIGATION BAR BASE (Hidden on Desktop >1024px)
   -------------------------------------------------------------------------- */
.bottom-nav {
  display: none;
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES (AppX / ClassX Coaching Mobile-First System)
   Strict guarantee: Desktop (>1024px) 100% untouched; Mobile (≤640px) app-grade.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. TABLET & COMPACT DESKTOP (≤1024px)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  /* Header & Navigation */
  .nav,
  .header-actions .btn-desk {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .header-call-btn {
    display: inline-flex;
  }

  .header-inner {
    height: 56px;
  }

  .brand-logo-img {
    height: 42px;
    width: auto;
    object-fit: contain;
    display: block;
  }

  .brand-logo-wrap img {
    height: 38px;
    width: auto;
  }

  .brand-title {
    font-size: 1.05rem;
  }

  .brand-subtitle {
    font-size: 0.65rem;
  }

  /* Sticky Bottom Navigation */
  .bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100%;
    z-index: 999;
    background-color: #ffffff;
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: 62px;
    padding: 6px 4px env(safe-area-inset-bottom, 6px) 4px;
    box-sizing: border-box;
    overflow: hidden;
  }

  .bottom-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 11px;
    font-weight: 600;
    gap: 3px;
    transition: color 0.15s ease, transform 0.1s ease;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    touch-action: manipulation;
  }

  .bottom-nav-item svg {
    width: 20px;
    height: 20px;
    display: block;
    stroke: currentColor;
    flex-shrink: 0;
  }

  .bottom-nav-item i {
    font-size: 18px;
    line-height: 1;
    transition: transform 0.15s ease, color 0.15s ease;
  }

  .bottom-nav-item span {
    font-size: 11px;
    font-weight: 700;
    line-height: 1.1;
    white-space: nowrap;
  }

  .bottom-nav-item.active {
    color: var(--color-primary);
  }

  .bottom-nav-item.active svg {
    stroke: var(--color-accent);
    transform: scale(1.08);
  }

  .bottom-nav-item.active i {
    color: var(--color-accent);
    transform: scale(1.1);
  }

  .bottom-nav-item:active {
    transform: scale(0.95);
  }

  /* Body & WhatsApp padding adjustments for bottom nav */
  body {
    padding-bottom: calc(76px + env(safe-area-inset-bottom, 0px)) !important;
  }

  .whatsapp-float {
    bottom: calc(80px + env(safe-area-inset-bottom, 0px)) !important;
    right: 14px;
    width: 48px;
    height: 48px;
    z-index: 998;
  }

  /* Layout Grids */
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .courses-grid,
  .toppers-grid,
  .videos-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid,
  .social-grid,
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .faculty-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .faculty-quote {
    border-left: none;
    padding-left: 0;
  }

  .faculty-actions {
    justify-content: center;
  }
}

/* --------------------------------------------------------------------------
   2. MOBILE-FIRST APP-STYLE EXPERIENCE (≤640px)
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
  /* --- A) MOBILE TOKENS & BASE --- */
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .section {
    padding: 32px 0;
  }

  .section-header {
    margin-bottom: 20px;
  }

  body {
    font-size: 15px;
    line-height: 1.6;
  }

  .section-title {
    font-size: 20px;
    line-height: 1.35;
  }

  .section-desc {
    font-size: 13px;
    margin-top: 6px;
    line-height: 1.5;
  }

  .course-card-title,
  .book-card-title,
  .video-card-title,
  .feature-title,
  .social-title,
  .topper-name {
    font-size: 16px;
    line-height: 1.35;
  }

  .video-card-meta,
  .course-meta,
  .topper-exam,
  .book-card-author,
  .meta {
    font-size: 12px;
  }

  /* Form controls: 16px prevents iOS zoom-in glitch */
  .form-control,
  input[type="text"],
  input[type="tel"],
  input[type="password"],
  select,
  textarea {
    font-size: 16px !important;
    min-height: 44px;
  }

  /* 44px minimum touch targets */
  .btn,
  .tab-btn,
  .nav-link,
  .bottom-nav-item,
  .menu-toggle,
  .header-call-btn,
  .modal-close {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* CTA Buttons inside cards, hero, and banners become 100% width */
  .btn {
    white-space: normal;
    word-break: break-word;
  }

  .hero-ctas .btn,
  .course-actions .btn,
  .test-series-action .btn,
  .combo-banner .btn,
  .book-offer-actions .btn,
  .faculty-actions .btn,
  .contact-form-wrap .btn,
  .index-modal-footer .btn {
    width: 100%;
  }

  /* --- B) HEADER & TOPBAR --- */
  .header-inner {
    height: 56px;
  }

  .brand-subtitle {
    display: none;
  }

  .brand-title {
    font-size: 1.05rem;
  }

  .topbar {
    padding: 5px 0;
  }

  .topbar-left,
  .topbar-social,
  .topbar-right > span {
    display: none !important;
  }

  .topbar-content {
    justify-content: center;
    text-align: center;
    padding: 0 16px;
  }

  .topbar-right {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
  }

  .topbar-link {
    font-size: 0.8125rem;
    font-weight: 700;
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
  }

  /* --- C) SECTION LAYOUTS --- */

  /* Hero Section */
  .hero {
    padding: 36px 0 28px 0;
  }

  .hero-title {
    font-size: clamp(1.625rem, 7vw, 2.75rem);
    line-height: 1.25;
  }

  .hero-subtitle {
    font-size: 14px;
    line-height: 1.5;
  }

  .hero-ctas {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }

  .hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 8px;
    margin-top: 1.25rem;
    padding: 0;
    background: transparent;
    border: none;
  }

  .hero-metrics .metric-card {
    padding: 8px 4px;
    background-color: #FFFFFF;
    border: 1px solid #E2E8F0;
    border-radius: var(--radius-btn);
    box-shadow: 0 1px 2px rgba(30, 43, 88, 0.04);
    text-align: center;
  }

  .hero-metrics .metric-val {
    font-size: 16px;
    font-weight: 800;
    color: #00A3E8;
    display: block;
    line-height: 1.2;
  }

  .hero-metrics .metric-label {
    font-size: 10.5px;
    color: #64748B;
    display: block;
    margin-top: 2px;
    line-height: 1.2;
    font-weight: 500;
  }

  /* Courses Grid */
  .courses-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .course-card {
    padding: 20px 16px;
  }

  .course-card.featured {
    transform: none;
  }

  .course-card.featured:hover {
    transform: none;
  }

  .course-actions {
    flex-direction: column;
    gap: 8px;
    width: 100%;
  }



  /* Book Showcase Section */
  .book-offer-card {
    grid-template-columns: 1fr;
    padding: 20px 16px;
    gap: 18px;
  }

  .book-usps-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .book-offer-pricing-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    text-align: center;
    padding: 14px;
  }

  .book-offer-actions {
    width: 100%;
    flex-direction: column;
    gap: 8px;
  }

  .books-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .book-card {
    padding: 16px;
  }

  .book-card-inner {
    grid-template-columns: 45% 1fr;
    gap: 14px;
    align-items: center;
    text-align: left;
  }

  .book-card-img {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 4px;
  }

  .book-badge {
    margin: 0;
  }

  .book-card-footer {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
  }

  .book-card-price .price {
    font-size: 1.3rem;
  }

  .book-card-footer .btn {
    width: auto !important;
    padding: 8px 12px;
    font-size: 0.85rem;
    white-space: nowrap;
  }

  /* Toppers Hero & Stats */
  .toppers-hero-section {
    padding: 2.5rem 0 2rem 0;
  }

  .toppers-title {
    font-size: 1.6rem;
  }

  .toppers-subtitle {
    font-size: 0.92rem;
  }

  .toppers-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .topper-stat-card {
    padding: 18px 12px;
  }

  .topper-stat-num {
    font-size: 1.5rem;
  }

  .topper-swipe-hint {
    display: inline-flex;
  }

  /* Toppers Horizontal Snap-Scroll Carousel (Like Demo Classes) */
  .toppers-grid {
    display: flex !important;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    gap: 16px;
    padding-bottom: 16px;
    padding-top: 4px;
    padding-left: 2px;
    padding-right: 16px;
    margin-bottom: 2rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .toppers-grid::-webkit-scrollbar {
    display: none;
  }

  .toppers-grid .topper-card {
    flex: 0 0 86% !important;
    min-width: 260px;
    max-width: 320px;
    scroll-snap-align: center;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 6px 18px rgba(30, 43, 88, 0.08);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    border: 1px solid #E2E8F0;
  }

  .topper-photo-wrap {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    margin: 0;
    background: #F1F5F9;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .topper-photo-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
  }

  /* Demo Videos Horizontal Snap-Scroll Carousel */
  .videos-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding: 16px;
    gap: 14px;
    padding-bottom: 14px;
    margin-left: 0;
    margin-right: 0;
    padding-left: 16px;
    padding-right: 16px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .videos-grid::-webkit-scrollbar {
    display: none;
  }

  .videos-grid .video-card {
    flex: 0 0 280px;
    min-width: 280px;
    max-width: 320px;
    scroll-snap-align: start;
  }

  /* Faculty Section */
  .faculty-card {
    grid-template-columns: 1fr;
    padding: 20px 16px;
    text-align: center;
    gap: 18px;
  }

  .faculty-photo-wrap {
    max-width: 220px;
    margin: 0 auto;
  }

  .faculty-quote {
    border-left: none;
    border-top: 2px solid var(--color-accent);
    padding: 12px 0 0 0;
    font-size: 1rem;
    line-height: 1.4;
  }

  .faculty-pillars {
    grid-template-columns: 1fr;
    gap: 10px;
    text-align: left;
  }

  .faculty-actions {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }

  /* Features & Social Grids */
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .feature-card {
    padding: 14px 10px;
  }

  .feature-icon {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
  }

  .social-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .social-card {
    padding: 14px 10px;
  }

  /* Contact Section */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .contact-form-wrap {
    padding: 20px 16px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: left;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .footer-bottom-links {
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  /* --- D) MODALS → BOTTOM SHEETS (≤640px) --- */
  .modal-overlay {
    align-items: flex-end;
    justify-content: center;
    padding: 0;
  }

  .modal-dialog {
    width: 100%;
    max-width: 100%;
    border-radius: 16px 16px 0 0;
    max-height: 92vh;
    margin: 0;
    border-bottom: none;
    animation: modalSlideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }

  @keyframes modalSlideUp {
    from {
      transform: translateY(100%);
    }
    to {
      transform: translateY(0);
    }
  }

  .modal-drag-handle {
    display: block;
    width: 40px;
    height: 4px;
    border-radius: 2px;
    background-color: var(--color-border-hover);
    margin: 10px auto 4px auto;
    flex-shrink: 0;
  }

  .modal-header {
    padding: 0.75rem 1rem 0.875rem 1rem;
  }

  .modal-body {
    padding: 1rem;
    max-height: calc(92vh - 60px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Index Modal Specifics */
  .index-list-grid {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .index-chapter-item {
    padding: 0.625rem 0.75rem;
    font-size: 0.8125rem;
  }

  /* Tables & KPI cards */
  .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    margin-bottom: 1rem;
  }

  .clean-table {
    min-width: 560px;
  }

  .kpi-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .tab-nav {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .tab-btn {
    padding: 10px 14px;
    min-height: 44px;
  }
}

/* Prevent iOS zoom on input focus (Professional App Standard) */
@media (max-width: 768px) {
  input, select, textarea {
    font-size: 16px !important;
  }
}

/* Professional Book Card & Page Hero Mobile Constraints */
.book-offer-cover img {
  max-height: 250px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  margin: 0 auto;
}

.book-card-img img {
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: 280px;
  object-fit: contain;
  display: block;
  border-radius: 4px;
}

@media (max-width: 1024px) {
  .books-grid {
    grid-template-columns: 1fr !important;
    gap: 1.5rem;
  }
  .book-offer-card {
    grid-template-columns: 1fr !important;
    padding: 24px 20px;
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .book-offer-card {
    padding: 16px 14px !important;
  }
  .book-offer-cover img {
    max-height: 220px;
  }
}

/* ==========================================================================
   BOOK ORDER AUTH MODAL / POPUP
   ========================================================================== */
.book-auth-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.72);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.book-auth-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.book-auth-modal-box {
  background: #ffffff;
  border-radius: 16px;
  max-width: 440px;
  width: 100%;
  padding: 24px;
  box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.35);
  position: relative;
  transform: scale(0.92) translateY(10px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
  border: 1px solid #e2e8f0;
}

.book-auth-modal-overlay.active .book-auth-modal-box {
  transform: scale(1) translateY(0);
}

.book-auth-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: #f1f5f9;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #64748b;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s ease;
}

.book-auth-modal-close:hover {
  background: #e2e8f0;
  color: #0f172a;
}

.book-auth-modal-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #eff6ff;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 16px;
  border: 2px solid #bfdbfe;
}

.book-auth-modal-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 8px;
  line-height: 1.35;
}

.book-auth-modal-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
}

.book-auth-modal-bookname {
  background: #f8fafc;
  border: 1px dashed #cbd5e1;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.book-auth-modal-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ==========================================================================
   MISSION & VISION COMPONENT (BRAND DESIGN SYSTEM)
   ========================================================================== */
.mv-section {
  padding: 3rem 0 2rem;
  overflow: visible;
}

.mv-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 2.25rem;
  width: 100%;
}

.mv-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  padding: 28px 24px;
  box-shadow: 0 4px 16px rgba(30, 43, 88, 0.04);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.mv-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(30, 43, 88, 0.08);
}

.mv-card-mission {
  border-top: 3px solid #00A3E8;
}

.mv-card-vision {
  border-top: 3px solid #1E2B58;
}

.mv-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.mv-icon-tile {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.mv-icon-tile.mission-icon {
  background: #E0F2FE;
  color: #00A3E8;
}

.mv-icon-tile.vision-icon {
  background: #F0F4F8;
  color: #1E2B58;
}

.mv-card-title {
  color: #1E2B58;
  font-size: 1.25rem;
  font-weight: 800;
  margin: 0;
  line-height: 1.25;
}

.mv-card-text {
  color: #475569;
  font-size: 0.95rem;
  line-height: 1.65;
  font-weight: 400;
  margin: 0;
}

@media (max-width: 768px) {
  .mv-cards-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 1.75rem;
  }
  .mv-card {
    padding: 24px 20px;
  }
}