/* ============================================
   SAP ALM Summit 2025 - Modern Glassmorphism Theme
   Option C: Glassmorphism & Light
   ============================================ */

/* ============================================
   CSS Custom Properties - Color Scheme
   ============================================ */
:root {
  /* Glassmorphism Background Gradients */
  /* --bg-gradient-primary: linear-gradient(135deg, #099ee1 0%, #0d426a 100%); */
  --bg-gradient-primary: linear-gradient(180deg, #1d41a2 0%, #119ca7 100%);
  --bg-gradient-secondary: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  
  /* Glassmorphism Effects */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-bg-strong: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
  
  /* SAP Brand Colors (integrated with glassmorphism) */
  --sap-blue: #0070d2;
  --sap-navy: #0a3276;
  --sap-teal: #25abe8;
  --sap-green: #57d75b;
  --sap-purple: #109da6;
  --sap-violet: #5e3efd;
  --sap-gold: #f0ab00;
  
/* Brand-ish palette from your image */
    --c-indigo: #5b47ff;
    --c-blue:   #1f7bff;
    --c-teal:   #27c5a5;
    --c-orange: #e56a19;
    --c-red:    #d73a3a;
    --c-purple: #6b3af6;

    /* Sizing & layout */
    --size: 240px;                 /* square size */
    --radius: 22px;                /* rounded corners */
    --pad: 18px;

    /* Animation controls */
    --bg-speed: 14s;
    --glow-speed: 3.2s;
    --shine-speed: 2.4s;

    /* Shine / glow strength */
    --gloss-opacity: 0.75;
    --shadow: 0 18px 40px rgba(0, 0, 0, .28);
    --shadow-strong: 0 22px 60px rgba(0, 0, 0, .34);
  
  /* Neutral Colors */
  --color-dark: #1a1a1a;
  --color-gray-dark: #333333;
  --color-gray-light: #c5c2c2;
  --color-gray-medium: #6c757d;
  --color-gray-light: #e0e0e0;
  --color-gray-extra-light: #f5f7fa;
  --color-white: #ffffff;
  
  /* Semantic Colors */
  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-danger: #dc3545;
  --color-info: #17a2b8;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 50%;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
  --shadow-glow-blue: 0 4px 20px rgba(0, 112, 210, 0.3);
  --shadow-glow-purple: 0 4px 20px rgba(102, 126, 234, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ============================================
   Global Enhancements
   ============================================ */
body {
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Background & Layout
   ============================================ */
main.bg-white {
  background: var(--bg-gradient-primary) !important;
  min-height: 100vh;
  padding: var(--spacing-lg) 0;
  position: relative;
}

/* Registration Container */
.registration-wrapper {
  background: var(--bg-gradient-secondary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-xl);
}

/* Glass Card Container */
.glass-container {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-xl);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

/* ============================================
   Navigation Enhancements
   ============================================ */
.navbar {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  transition: all var(--transition-normal);
}

.nav-link {
  position: relative;
  padding: 0.5rem 1.5rem !important;
  transition: all var(--transition-normal);
  font-weight: 500;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #0070f2, #000000);
  transform: translateX(-50%);
  transition: width var(--transition-normal);
}

.nav-link:hover::before,
.nav-link.active::before {
  width: 80%;
}

.nav-link:hover {
  color: #0d3594 !important;
  transform: translateY(-2px);
}

/* ============================================
   Banner Enhancements
   ============================================ */
.banner {
  position: relative;
  overflow: hidden;
  /* border-radius: 0 0 var(--radius-lg) var(--radius-lg); */
}

.banner::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to top, rgba(102, 126, 234, 0.3), transparent);
  pointer-events: none;
}

.banner img {
  transition: transform var(--transition-slow);
}

.banner:hover img {
  transform: scale(1.02);
}

/* ============================================
   Animated Offer Banner Enhancement
   ============================================ */
.wrapper {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
}

.wrapper::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(102, 126, 234, 0.2) 0%, transparent 70%);
  animation: rotate 10s linear infinite;
}

@keyframes rotate {
  to { transform: rotate(360deg); }
}

h2.offers {
  position: relative;
  z-index: 1;
  padding: 1rem 0;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  background: linear-gradient(to right, var(--sap-purple) 10%, var(--sap-teal) 50%, var(--sap-green) 60%);
  background-size: 200% auto;
  color: #fff;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: textclip 1.5s linear infinite;
}

/* ============================================
   Typography Enhancements
   ============================================ */
h1, .h1 { 
  font-size: clamp(2rem, 5vw, 3.5rem); 
  font-weight: 700;
  letter-spacing: -0.5px;
}

h2, .h2 { 
  font-size: clamp(1.5rem, 3vw, 2.5rem); 
  font-weight: 600;
}

h4, .h4 { 
  font-size: clamp(1.1rem, 2vw, 1.5rem); 
  font-weight: 600;
  color: var(--color-gray-light);
}

.fw-bold {
  letter-spacing: 0.3px;
}

/* ============================================
   Accordion Enhancements
   ============================================ */
.accordion-item {
  border: none !important;
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-lg) !important;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.accordion-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.2);
}

.accordion-button {
  background: linear-gradient(135deg, var(--sap-purple) 0%, var(--sap-violet) 100%) !important;
  color: white !important;
  font-weight: 600;
  padding: 1.5rem;
  border-radius: 0 !important;
  position: relative;
  overflow: hidden;
  border: none !important;
  box-shadow: none !important;
}

.accordion-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.accordion-button:hover::before {
  left: 100%;
}

.accordion-button.collapsed {
  background: linear-gradient(135deg, #555555 0%, #333333 100%) !important;
}

.accordion-button:not(.collapsed) {
  background: linear-gradient(135deg, var(--sap-purple) 0%, var(--sap-violet) 100%) !important;
  box-shadow: none !important;
}

.accordion-button:focus {
  box-shadow: 0 0 0 0.25rem rgba(102, 126, 234, 0.25) !important;
  border: none !important;
}

.accordion-body {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: var(--spacing-lg);
  border-top: 1px solid var(--glass-border);
}

/* Accordion Icon Enhancement */
.accordion-button::after {
  filter: brightness(0) invert(1);
  transition: transform var(--transition-normal);
}

.accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
}

/* ============================================
   Button Enhancements
   ============================================ */
.btn-primary {
  background: linear-gradient(135deg, var(--sap-purple) 0%, var(--sap-violet) 100%);
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 32px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
  transition: all 0.4s ease;
  box-shadow: var(--shadow-glow-purple);
  color: white !important;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(102, 126, 234, 0.4);
  background: linear-gradient(135deg, var(--sap-purple) 0%, var(--sap-violet) 100%);
}

.btn-primary i {
  margin-left: 8px;
  transition: transform var(--transition-normal);
}

.btn-primary:hover i {
  transform: translateX(5px);
}

.btn-primary:active {
  transform: translateY(-1px);
}

.btn-secondary {
  background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 32px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 0.9rem;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
  color: white !important;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: linear-gradient(135deg, #5a6268 0%, #343a40 100%);
}

/* ============================================
   Quantity Selector Enhancements
   ============================================ */
.btn-qty {
  border-radius: var(--radius-full);
  padding: 0;
  font-size: 32px;
  background: linear-gradient(135deg, var(--sap-purple) 0%, var(--sap-violet) 100%);
  border: 0;
  width: 45px;
  height: 45px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.btn-qty:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-glow-purple);
}

.btn-qty:active {
  transform: scale(0.95);
}

.btn-qty > i.bi::before {
  background: transparent;
  border-radius: var(--radius-full);
  color: #ffffff;
  border: none;
}

.btn-qty::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.4s, height 0.4s;
}

.btn-qty:active::after {
  width: 100px;
  height: 100px;
}

.input-qty-txt {
  border-radius: 0 !important;
  padding: 5px 10px;
  height: 45px;
  margin-top: 0px;
  border: 2px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.9);
  transition: all var(--transition-normal);
  font-weight: 600;
  text-align: center;
}

.input-qty-txt:focus {
  border-color: var(--sap-purple);
  background: white;
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
  outline: none;
}

/* ============================================
   Form Input Enhancements
   ============================================ */
.form-control {
  border: 2px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 1rem;
  transition: all var(--transition-normal);
  background: var(--color-gray-extra-light);
}

.form-control:focus {
  border-color: var(--sap-purple);
  background: white;
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
  transform: translateY(-2px);
  outline: none;
}

.form-label {
  font-weight: 600;
  color: var(--color-gray-dark);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  letter-spacing: 0.3px;
}

.form-select {
  border: 2px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  transition: all var(--transition-normal);
  background: var(--color-gray-extra-light);
}

.form-select:focus {
  border-color: var(--sap-purple);
  background: white;
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
  outline: none;
}

/* Input Group Enhancements */
.input-group-text {
  /* background: linear-gradient(135deg, var(--sap-purple) 0%, var(--sap-violet) 100%); color: white; */
  background: #c3c3c3;  color: #3b3a3a;
  border: none;
  font-weight: 600;
}
.input-group-text.bg-light{
    background: #c3c3c3 !important;
}
.input-group-text.left{
	border-radius: var(--radius-md) 0 0 var(--radius-md);
}.input-group-text.right{
	border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* ============================================
   Pricing Table Enhancements
   ============================================ */
.table {
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 0;
}

.table tr {
  border-bottom: 1px solid var(--color-gray-extra-light);
  transition: background var(--transition-fast);
}

.table tr:hover {
  background: rgba(102, 126, 234, 0.05);
}

.table td {
  padding: 12px 16px;
  font-size: 0.95rem;
  vertical-align: middle;
}

.table tr:last-child {
  background: linear-gradient(135deg, var(--sap-purple) 0%, var(--sap-violet) 100%);
  color: white;
  font-weight: 700;
}

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

.table-bordered td {
  border-left: 0;
  border-right: 0;
}

/* Glass Pricing Card */
.pricing-glass-card {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--glass-shadow);
  margin-bottom: var(--spacing-md);
}

/* ============================================
   Select2 Enhancements (for dropdowns)
   ============================================ */
.select2-container--bootstrap-5 .select2-selection {
  border: 2px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  padding: 6px 12px;
  background: var(--color-gray-extra-light);
  transition: all var(--transition-normal);
}

.select2-container--bootstrap-5.select2-container--focus .select2-selection,
.select2-container--bootstrap-5.select2-container--open .select2-selection {
  border-color: var(--sap-purple);
  background: white;
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

/* ============================================
   Page Entrance Animations
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.glass-container {
  animation: fadeInUp 0.6s ease-out;
}

.accordion-item {
  animation: fadeInUp 0.6s ease-out;
  animation-fill-mode: both;
}

.accordion-item:nth-child(1) { animation-delay: 0.1s; }
.accordion-item:nth-child(2) { animation-delay: 0.2s; }
.accordion-item:nth-child(3) { animation-delay: 0.3s; }

/* ============================================
   Loading State
   ============================================ */
.btn-primary.loading::after {
  content: '';
  width: 16px;
  height: 16px;
  border: 2px solid white;
  border-top-color: transparent;
  border-radius: 50%;
  display: inline-block;
  margin-left: 10px;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
}

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

/* ============================================
   Responsive Design Enhancements
   ============================================ */
@media (max-width: 768px) {
  :root {
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
  }
  
  .glass-container {
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
  }
  
  .accordion-button {
    padding: 1rem;
    font-size: 0.95rem;
  }
  
  .btn-primary,
  .btn-secondary {
    width: 100%;
    margin-bottom: 0.5rem;
  }
  
  .btn-qty {
    width: 40px;
    height: 45px;
    font-size: 28px;
  }
  
  main.bg-white {
    padding: var(--spacing-sm) 0;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .container {
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }
}

/* ============================================
   Accessibility: Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================
   Focus Indicators for Keyboard Navigation
   ============================================ */
*:focus-visible {
  outline: 3px solid var(--sap-purple);
  outline-offset: 2px;
}

button:focus-visible,
.btn:focus-visible {
  outline: 3px solid rgba(102, 126, 234, 0.5);
  outline-offset: 2px;
}

/* ============================================
   Additional Utility Classes
   ============================================ */
.text-gradient {
  background: linear-gradient(135deg, var(--sap-purple), var(--sap-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-card-small {
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  box-shadow: var(--shadow-sm);
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Better text rendering */
body {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}