/* ==========================================================================
   AUMTREND Vibrant & Colorful UI - Custom Styles
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
  /* Vibrant Light Theme */
  --bg-color: #fafcff; /* Very soft blue-white */
  --bg-surface: #ffffff;
  --bg-surface-glass: rgba(255, 255, 255, 0.85);
  
  /* Brand/Accent Colors (Colorful & Energetic) */
  --accent-primary: #4338ca; /* Indigo */
  --accent-secondary: #f43f5e; /* Rose/Coral */
  --accent-tertiary: #10b981; /* Emerald Green */
  --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  --accent-gradient-alt: linear-gradient(135deg, var(--accent-secondary), var(--accent-tertiary));
  
  /* Text */
  --text-main: #0f172a; /* Slate 900 */
  --text-muted: #64748b; /* Slate 500 */
  --text-light: #ffffff;
  
  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Glass & Borders */
  --border-glass: 1px solid rgba(0, 0, 0, 0.05);
  --glass-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.08);
  
  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes morph {
  0% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
  50% { border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%; }
  100% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
  100% { transform: translateY(0px); }
}

@keyframes spin {
  100% { transform: rotate(360deg); }
}

.animated-border-card {
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.animated-border-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(transparent, rgba(108, 92, 231, 1), rgba(232, 67, 147, 1), transparent 30%);
  animation: spin 6s linear infinite var(--spin-delay, 0s);
  z-index: -2;
}

.animated-border-card::after {
  content: '';
  position: absolute;
  inset: 2px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 22px;
  z-index: -1;
}

/* =========================================
   Base Styles & Reset
   ========================================= */
html, body {
  overflow-x: hidden;
  width: 100%;
  position: relative;
}

body {
  font-family: var(--font-body);
  color: var(--text-main);
  background-color: var(--bg-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-primary);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

a:hover {
  color: var(--accent-secondary);
}

/* Background Animated Gradient Mesh (Colorful Light Version) */
.bg-mesh {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: -1;
  background: radial-gradient(circle at 15% 50%, rgba(67, 56, 202, 0.08), transparent 40%),
              radial-gradient(circle at 85% 30%, rgba(244, 63, 94, 0.08), transparent 40%),
              radial-gradient(circle at 50% 80%, rgba(16, 185, 129, 0.08), transparent 40%);
  filter: blur(60px);
  animation: meshAnim 20s infinite alternate;
}

@keyframes meshAnim {
  0% { transform: scale(1) translate(0, 0); }
  50% { transform: scale(1.2) translate(5%, 5%); }
  100% { transform: scale(1) translate(-5%, -5%); }
}

/* =========================================
   Components
   ========================================= */

/* Glass Navbar (Light) */
.navbar-glass {
  background: #ffffff !important;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: var(--border-glass);
  padding: 1.2rem 0;
  transition: var(--transition-smooth);
}

.navbar-glass.scrolled {
  padding: 0.8rem 0;
  box-shadow: var(--glass-shadow);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.8rem;
  color: var(--text-main) !important;
  letter-spacing: -1px;
}

.navbar-brand span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-link {
  font-weight: 600;
  color: var(--text-muted) !important;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 1px;
  margin: 0 0.4rem;
  position: relative;
  transition: var(--transition-smooth);
}

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

.nav-link::before {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--accent-primary);
  opacity: 0;
  transition: var(--transition-smooth);
}

.nav-link:hover::before, .nav-link.active::before {
  opacity: 1;
}

/* Dropdown Glass (Light) */
.dropdown-menu {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: var(--border-glass);
  box-shadow: var(--glass-shadow);
  border-radius: 12px;
  padding: 1rem 0;
}

.dropdown-item {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 1.5rem;
  transition: var(--transition-smooth);
}

.dropdown-item:hover {
  background: rgba(67, 56, 202, 0.05);
  color: var(--accent-primary);
}

/* Premium Buttons */
.btn-glow {
  background: var(--accent-gradient);
  color: var(--text-light);
  border: none;
  border-radius: 30px;
  padding: 0.8rem 2.5rem;
  font-weight: 700;
  font-family: var(--font-heading);
  letter-spacing: 0.5px;
  box-shadow: 0 10px 20px -10px var(--accent-primary);
  transition: var(--transition-smooth);
}

.btn-glow:hover {
  color: var(--text-light);
  transform: translateY(-2px);
  box-shadow: 0 15px 25px -10px var(--accent-secondary);
}

.btn-outline-glow {
  background: var(--bg-surface);
  color: var(--accent-primary);
  border: 2px solid var(--accent-primary);
  border-radius: 30px;
  padding: 0.75rem 2.5rem;
  font-weight: 700;
  font-family: var(--font-heading);
  transition: var(--transition-smooth);
}

.btn-outline-glow:hover {
  background: var(--accent-primary);
  color: var(--text-light);
  box-shadow: 0 10px 20px -10px var(--accent-primary);
}

/* Typography Enhancements */
.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}
.gradient-text-alt {
  background: var(--accent-gradient-alt);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-title {
  font-size: clamp(3rem, 6vw, 5.5rem);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: var(--text-main);
}

/* Bento Box Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

.bento-card {
  background: var(--bg-surface);
  border: var(--border-glass);
  border-radius: 24px;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  transition: var(--transition-smooth);
  z-index: 1;
}

/* Light theme mouse glow */
.bento-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(67, 56, 202, 0.05), transparent 40%);
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.bento-card:hover::before {
  opacity: 1;
}

.bento-card:hover {
  transform: translateY(-5px);
  border-color: rgba(67, 56, 202, 0.2);
  box-shadow: var(--glass-shadow);
}

/* Custom Image Cards */
.img-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
}
.img-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}
.img-card:hover img {
  transform: scale(1.05);
}

/* Sections */
.section-padding {
  padding: 5rem 0;
}

.glass-panel {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(20px);
  border: var(--border-glass);
  border-radius: 30px;
  padding: 4rem;
  box-shadow: var(--glass-shadow);
}

/* Stats Section */
.stat-box {
  text-align: center;
  padding: 2rem;
}
.stat-number {
  font-size: 3.5rem;
  font-weight: 900;
  font-family: var(--font-heading);
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

/* Footer */
.footer-advanced {
  border-top: var(--border-glass);
  padding: 5rem 0 2rem;
  background: #0f172a; /* Slate 900 for footer contrast */
  color: var(--text-light);
}

.footer-advanced .navbar-brand {
  color: var(--text-light) !important;
}

.footer-advanced h5 {
  color: var(--text-light);
}

.footer-advanced .text-muted {
  color: #94a3b8 !important; /* Slate 400 */
}

.social-circle {
  width: 45px;
  height: 45px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-light);
  font-size: 1.2rem;
  transition: var(--transition-smooth);
}

.social-circle:hover {
  background: var(--accent-gradient);
  border-color: transparent;
  color: var(--text-light);
  transform: translateY(-3px);
}

/* Infinite Client Scroll */
.marquee-container {
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  width: 100%;
  padding: 2rem 0;
}
.marquee-container::before, .marquee-container::after {
  content: '';
  position: absolute;
  top: 0;
  width: 150px;
  height: 100%;
  z-index: 2;
}
.marquee-container::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-color), transparent);
}
.marquee-container::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-color), transparent);
}
.marquee-track {
  display: inline-flex;
  animation: scrollMarquee 35s linear infinite;
  align-items: center;
  width: max-content;
}
.marquee-track:hover {
  animation-play-state: paused;
}
.marquee-logo {
  font-size: 1.5rem;
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-muted);
  margin: 0 4rem;
  opacity: 0.6;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.marquee-logo img {
  height: 40px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.8;
  transition: all 0.3s ease;
}
.marquee-logo:hover img {
  filter: grayscale(0%);
  opacity: 1;
}
.marquee-logo i {
  font-size: 2rem;
}
.marquee-logo:hover {
  opacity: 1;
  color: var(--accent-primary);
}
@keyframes scrollMarquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Hero Enhancements */
.hero-blob {
  position: absolute;
  top: 10%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: var(--accent-gradient);
  filter: blur(100px);
  border-radius: 50%;
  opacity: 0.15;
  z-index: 0;
}
.hero-image-container {
  height: 550px;
}
.floating-badge {
  position: absolute;
  bottom: -30px;
  left: -40px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: 1.2rem;
  border-radius: 20px;
  border: var(--border-glass);
  box-shadow: var(--glass-shadow);
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 3;
  animation: floatAnim 5s ease-in-out infinite;
}
@keyframes floatAnim {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* Utilities */
.text-justify { text-align: justify; }

@media (max-width: 991px) {
  .hero-image-container {
    height: auto !important;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: stretch;
    gap: 0.5rem;
    margin-top: -1.5rem !important;
    margin-bottom: 2rem !important;
    padding: 0 0.5rem;
  }
  .hero-image-container > div:first-child {
    display: none !important;
  }
  .hero-card-1, .hero-card-2, .hero-card-3 {
    position: relative !important;
    top: auto !important;
    bottom: auto !important;
    left: auto !important;
    right: auto !important;
    width: 32% !important;
    max-width: none;
    padding: 0.75rem 0.5rem !important;
    transform: none !important;
    animation: none !important;
    text-align: center;
  }
  .hero-card-1 > .d-flex, .hero-card-2 > .d-flex, .hero-card-3 > .d-flex {
    flex-direction: column !important;
    align-items: center !important;
    margin-bottom: 0 !important;
  }
  .hero-card-1 .rounded-circle, .hero-card-2 .rounded-circle, .hero-card-3 .rounded-circle {
    margin-right: 0 !important;
    margin-bottom: 0.5rem;
    width: 32px !important;
    height: 32px !important;
    font-size: 0.8rem;
  }
  .hero-card-1 h6, .hero-card-2 h6, .hero-card-3 h6 {
    font-size: 0.7rem;
    line-height: 1.2;
    margin-bottom: 0 !important;
  }
  .hero-card-1 p, .hero-card-2 p, .hero-card-3 p {
    display: none !important;
  }
  .hero-image-container .w-75 {
    width: 100% !important;
    height: 100% !important;
  }
  .bento-grid {
    display: flex;
    flex-direction: column;
  }
  .section-padding {
    padding: 3rem 0;
  }
  .glass-panel {
    padding: 1.5rem;
  }
  .hero-title {
    font-size: clamp(2rem, 5vw, 2.5rem);
  }
  .stat-number {
    font-size: 2.5rem;
  }
  .marquee-logo {
    margin: 0 2rem;
    font-size: 1.2rem;
  }
  .floating-badge {
    position: relative;
    bottom: 0;
    left: 0;
    margin-top: 1rem;
    width: 100%;
    justify-content: center;
  }
  .hero-blob {
    width: 250px;
    height: 250px;
  }
  
  /* Mobile Menu Enhancements */
  .navbar-collapse {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 1.5rem;
    margin-top: 1rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    border: 1px solid rgba(0,0,0,0.05);
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }
  .navbar-nav {
    align-items: flex-start !important;
  }
  .nav-item {
    width: 100%;
    border-bottom: 1px solid rgba(0,0,0,0.05);
  }
  .nav-item:last-child {
    border-bottom: none;
    margin-top: 1.5rem;
    display: flex;
    justify-content: flex-start;
  }
  .nav-link {
    padding: 1rem 0 !important;
    margin: 0 !important;
    font-size: 1.05rem !important;
    text-align: left;
  }
  .nav-link::before {
    display: none;
  }
  .dropdown-menu {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    padding-left: 1.5rem !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
  }
  .dropdown-item {
    padding: 0.5rem 0 !important;
    font-size: 0.95rem;
  }
}

@media (max-width: 767px) {
  .page-header-premium {
    padding: 120px 0 80px;
  }
  .navbar-brand img {
    height: 40px !important;
  }
  .mega-menu {
    padding: 1rem !important;
  }
  .stat-number {
    font-size: 2rem;
  }
  .marquee-logo {
    margin: 0 1.5rem;
    font-size: 1rem;
  }
  .hero-image-container {
    height: 300px;
  }
}

@media (max-width: 575px) {
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }
}

/* =========================================
   Premium Page Header
   ========================================= */
.page-header-premium {
  position: relative;
  padding: 160px 0 140px;
  background: #0f172a; /* Slate 900 */
  overflow: hidden;
  margin-top: 0 !important;
}

.page-header-premium::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("https://images.unsplash.com/photo-1557683316-973673baf926?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80") center/cover;
  opacity: 0.2;
  pointer-events: none;
}

.page-header-premium::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 80px;
  background: var(--bg-color);
  clip-path: polygon(0 100%, 100% 100%, 100% 0);
  pointer-events: none;
  z-index: 10;
}

.page-header-content {
  position: relative;
  z-index: 2;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: none;
  box-shadow: none;
  padding: 0;
  max-width: 900px;
  margin: 0 auto;
}

.page-header-content h1 {
  color: #ffffff !important;
  text-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.page-header-content .gradient-text {
  background: linear-gradient(135deg, #60a5fa, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
}

.page-header-content p.text-muted {
  color: rgba(255, 255, 255, 0.8) !important;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.page-header-content .badge {
  background: rgba(255, 255, 255, 0.1) !important;
  color: #fff !important;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
}

/* =========================================
   Mega Menu Styles
   ========================================= */
@media (min-width: 992px) {
  .dropdown-mega {
    position: static !important;
  }
  .mega-menu {
    left: 15px !important;
    right: 15px !important;
    width: calc(100% - 30px) !important;
    margin-top: 0;
  }
}

.mega-list .dropdown-item {
  position: relative;
  transition: all 0.2s ease;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-main);
  padding-left: 2rem !important;
}

.mega-list .dropdown-item::before {
  content: "→";
  position: absolute;
  left: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
  opacity: 0.5;
  transition: all 0.2s ease;
}

.mega-list .dropdown-item:hover {
  background-color: rgba(67, 56, 202, 0.05);
  color: var(--accent-primary);
  transform: translateX(5px);
}

.mega-list .dropdown-item:hover::before {
  color: var(--accent-primary);
  opacity: 1;
  transform: translateY(-50%) translateX(3px);
}

/* Footer Interactions */
.footer-links a:hover, .hover-text-white:hover {
  color: #ffffff !important;
}
.hover-translate-x {
  transition: transform 0.3s ease, color 0.3s ease;
}
.hover-translate-x:hover {
  transform: translateX(5px);
}
.social-circle:hover {
  background: var(--accent-primary) !important;
  transform: translateY(-3px);
}

/* Responsive Hero Cards */
@media (min-width: 992px) {
  .hero-card-1 { right: -5%; width: 310px; }
  .hero-card-2 { left: -5%; width: 310px; }
  .hero-card-3 { right: -5%; width: 310px; }
}

@media (min-width: 992px) and (max-width: 1399px) {
  .hero-card-1 { right: 0; transform: scale(0.85); transform-origin: right center; }
  .hero-card-2 { left: 0; transform: scale(0.85); transform-origin: left center; }
  .hero-card-3 { right: 0; transform: scale(0.85); transform-origin: right center; }
}

/* Custom Syllabus Tabs */
.nav-pills .nav-link {
  color: var(--text-muted);
  transition: all 0.3s ease;
  border: 1px solid transparent;
}
.nav-pills .nav-link:hover {
  color: var(--accent-primary);
  background: rgba(67, 56, 202, 0.03);
}
.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)) !important;
  color: #fff !important;
  box-shadow: 0 10px 20px rgba(67, 56, 202, 0.25) !important;
  border-color: transparent !important;
  transform: translateY(-2px);
}

/* Custom Accordion */
.custom-accordion .accordion-item {
  border: none;
  margin-bottom: 1.25rem;
  border-radius: 16px !important;
  background: #fff;
  box-shadow: 0 5px 15px rgba(0,0,0,0.03);
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.04);
  transition: all 0.3s ease;
}
.custom-accordion .accordion-item:hover {
  box-shadow: 0 8px 25px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}
.custom-accordion .accordion-button {
  border-radius: 16px !important;
  background: transparent;
  font-weight: 700;
  color: var(--text-main);
  padding: 1.25rem 1.5rem;
  box-shadow: none !important;
  font-size: 1.05rem;
}
.custom-accordion .accordion-button:not(.collapsed) {
  color: var(--accent-primary);
  background: rgba(67, 56, 202, 0.03);
}
.custom-accordion .accordion-button::after {
  filter: grayscale(1);
  opacity: 0.5;
  transition: all 0.3s ease;
}
.custom-accordion .accordion-button:not(.collapsed)::after {
  filter: invert(24%) sepia(91%) saturate(3015%) hue-rotate(240deg) brightness(90%) contrast(98%);
  opacity: 1;
}
.custom-accordion .accordion-body {
  padding: 0 1.5rem 1.5rem 1.5rem;
  color: var(--text-muted);
  line-height: 1.7;
}