/* ====================================
   CSS Variables & Custom Properties
==================================== */
:root {
  /* Triadic Color Scheme */
  --primary-color: #3B82F6;
  --primary-light: #60A5FA;
  --primary-dark: #1D4ED8;
  --secondary-color: #F59E0B;
  --secondary-light: #FBBF24;
  --secondary-dark: #D97706;
  --tertiary-color: #EF4444;
  --tertiary-light: #F87171;
  --tertiary-dark: #DC2626;
  
  /* Neutral Colors */
  --white: #FFFFFF;
  --light-gray: #F8FAFC;
  --medium-gray: #64748B;
  --dark-gray: #334155;
  --black: #0F172A;
  
  /* Neomorphism Colors */
  --neo-bg: #E2E8F0;
  --neo-shadow-light: #FFFFFF;
  --neo-shadow-dark: #CBD5E1;
  --neo-inset-light: #F1F5F9;
  --neo-inset-dark: #94A3B8;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
  --gradient-hero: linear-gradient(135deg, rgba(59, 130, 246, 0.9), rgba(245, 158, 11, 0.8));
  --gradient-overlay: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5));
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-secondary: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Responsive Typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --text-3xl: clamp(2rem, 1.7rem + 1.5vw, 2.5rem);
  --text-4xl: clamp(2.5rem, 2rem + 2.5vw, 3.5rem);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Shadows & Effects */
  --neo-shadow: 
    8px 8px 16px var(--neo-shadow-dark),
    -8px -8px 16px var(--neo-shadow-light);
  --neo-inset: 
    inset 4px 4px 8px var(--neo-inset-dark),
    inset -4px -4px 8px var(--neo-inset-light);
  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  --hover-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ====================================
   Base Styles
==================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-secondary);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--dark-gray);
  background-color: var(--white);
  overflow-x: hidden;
}

/* ====================================
   Typography
==================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: 1.3;
  color: var(--black);
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  margin-bottom: var(--spacing-sm);
  color: var(--medium-gray);
}

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

a:hover {
  color: var(--primary-dark);
}

/* Read More Links */
.read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-color);
  font-weight: 500;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: var(--transition-normal);
  position: relative;
}

.read-more::after {
  content: '→';
  transition: var(--transition-normal);
}

.read-more:hover {
  color: var(--primary-dark);
  transform: translateX(4px);
}

.read-more:hover::after {
  transform: translateX(4px);
}

/* ====================================
   Global Button Styles
==================================== */
.btn,
button,
input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  min-width: 120px;
}

.btn-primary-custom {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--card-shadow);
}

.btn-primary-custom:hover {
  transform: translateY(-2px);
  box-shadow: var(--hover-shadow);
  color: var(--white);
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  box-shadow: var(--neo-shadow);
}

.btn-outline-primary:hover {
  background: var(--primary-color);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--hover-shadow);
}

.btn-outline-light {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
}

.btn-outline-light:hover {
  background: var(--white);
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

.btn-secondary-custom {
  background: var(--gradient-secondary);
  color: var(--white);
  box-shadow: var(--card-shadow);
}

.btn-secondary-custom:hover {
  transform: translateY(-2px);
  box-shadow: var(--hover-shadow);
  color: var(--white);
}

/* ====================================
   Navigation
==================================== */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding: var(--spacing-sm) 0;
  transition: var(--transition-normal);
}

.navbar-brand {
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--primary-color) !important;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

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

.nav-link {
  font-family: var(--font-primary);
  font-weight: 500;
  color: var(--dark-gray) !important;
  margin: 0 var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm) !important;
  border-radius: 8px;
  transition: var(--transition-normal);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition-normal);
  transform: translateX(-50%);
}

.nav-link:hover {
  color: var(--primary-color) !important;
  background: rgba(59, 130, 246, 0.1);
}

.nav-link:hover::after {
  width: 80%;
}

.navbar-toggler {
  border: none;
  padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* ====================================
   Neomorphism Components
==================================== */
.neomorphism-card {
  background: var(--neo-bg);
  border-radius: 20px;
  box-shadow: var(--neo-shadow);
  border: none;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.neomorphism-card:hover {
  transform: translateY(-5px);
  box-shadow: 
    12px 12px 24px var(--neo-shadow-dark),
    -12px -12px 24px var(--neo-shadow-light);
}

.neomorphism-inset {
  background: var(--neo-bg);
  border-radius: 16px;
  box-shadow: var(--neo-inset);
  padding: var(--spacing-md);
}

/* ====================================
   Layout Components
==================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section-padding {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-md);
  position: relative;
  display: inline-block;
  width: 100%;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.section-description {
  text-align: center;
  font-size: var(--text-lg);
  color: var(--medium-gray);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.6;
}

/* ====================================
   Hero Section
==================================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-overlay);
  z-index: 1;
}

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

.hero-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--white) !important;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  animation: slideInUp 1s var(--transition-bounce);
}

.hero-subtitle {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-xl);
  color: var(--white) !important;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  animation: slideInUp 1s var(--transition-bounce) 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: slideInUp 1s var(--transition-bounce) 0.4s both;
}

.parallax-bg {
  background-attachment: fixed;
}

/* ====================================
   Card Components
==================================== */
.card {
  border: none;
  border-radius: 20px;
  overflow: hidden;
  transition: var(--transition-normal);
  box-shadow: var(--card-shadow);
  background: var(--white);
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--hover-shadow);
}

.card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--light-gray);
}

.card-img-top {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.card:hover .card-img-top {
  transform: scale(1.05);
}

.card-content {
  padding: var(--spacing-lg);
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card-content h4 {
  margin-bottom: var(--spacing-sm);
  color: var(--black);
}

.card-content p {
  color: var(--medium-gray);
  line-height: 1.6;
}

/* ====================================
   Instructor Cards
==================================== */
.instructor-img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto var(--spacing-md);
  border: 4px solid var(--white);
  box-shadow: var(--card-shadow);
  transition: var(--transition-normal);
}

.instructor-img:hover {
  transform: scale(1.1);
  box-shadow: var(--hover-shadow);
}

/* ====================================
   Portfolio Section
==================================== */
.portfolio-item {
  transition: var(--transition-normal);
}

.portfolio-item:hover {
  transform: translateY(-8px) scale(1.02);
}

/* ====================================
   Timeline Components
==================================== */
.timeline-item {
  position: relative;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  background: var(--white);
  border-radius: 16px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-normal);
}

.timeline-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.timeline-item:hover {
  transform: translateX(10px);
  box-shadow: var(--hover-shadow);
}

/* ====================================
   Accordion Styles
==================================== */
.accordion-item {
  border: none;
  margin-bottom: var(--spacing-sm);
  border-radius: 16px !important;
  overflow: hidden;
}

.accordion-button {
  background: var(--neo-bg);
  border: none;
  color: var(--black);
  font-family: var(--font-primary);
  font-weight: 600;
  padding: var(--spacing-lg);
  border-radius: 16px !important;
  transition: var(--transition-normal);
}

.accordion-button:not(.collapsed) {
  background: var(--primary-color);
  color: var(--white);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: none;
  border: none;
}

.accordion-body {
  background: var(--white);
  color: var(--medium-gray);
  line-height: 1.7;
  padding: var(--spacing-lg);
}

/* ====================================
   Form Styles
==================================== */
.form-control,
.form-select {
  border: 2px solid var(--neo-shadow-dark);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  font-family: var(--font-secondary);
  background: var(--neo-bg);
  transition: var(--transition-normal);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25);
  background: var(--white);
}

.form-label {
  font-family: var(--font-primary);
  font-weight: 500;
  color: var(--black);
  margin-bottom: var(--spacing-xs);
}

.contact-form {
  background: var(--white);
}

.contact-info .contact-item {
  text-align: center;
  padding: var(--spacing-lg);
}

.contact-info h5 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

/* ====================================
   Webinar Styles
==================================== */
.webinar-date {
  display: inline-block;
  background: var(--gradient-secondary);
  color: var(--white);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

/* ====================================
   Modal Styles
==================================== */
.modal-content {
  border-radius: 20px;
  border: none;
  overflow: hidden;
}

.modal-header {
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
}

.modal-title {
  font-family: var(--font-primary);
  font-weight: 600;
}

.btn-close {
  filter: brightness(0) invert(1);
}

/* ====================================
   Footer
==================================== */
.footer {
  background: var(--black) !important;
  color: var(--white);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  position: relative;
}

.footer h5,
.footer h6 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
  font-family: var(--font-primary);
}

.footer ul li {
  margin-bottom: var(--spacing-xs);
}

.footer ul li a {
  color: var(--medium-gray);
  transition: var(--transition-fast);
  text-decoration: none;
  position: relative;
}

.footer ul li a:hover {
  color: var(--white);
  padding-left: var(--spacing-xs);
}

.footer ul li a::before {
  content: '→';
  position: absolute;
  left: -20px;
  opacity: 0;
  transition: var(--transition-normal);
}

.footer ul li a:hover::before {
  opacity: 1;
  left: -15px;
}

.footer p {
  color: var(--medium-gray);
  margin-bottom: var(--spacing-xs);
}

.footer hr {
  border-color: var(--dark-gray);
  margin: var(--spacing-xl) 0 var(--spacing-lg);
}

/* Social Media Icons */
.social-icons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-md);
}

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--medium-gray);
  color: var(--white);
  border-radius: 50%;
  transition: var(--transition-normal);
  text-decoration: none;
  font-size: var(--text-sm);
}

.social-icon:hover {
  background: var(--primary-color);
  color: var(--white);
  transform: translateY(-3px);
}

/* ====================================
   Success Page Styles
==================================== */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  padding: var(--spacing-lg);
}

.success-content {
  text-align: center;
  background: var(--white);
  padding: var(--spacing-3xl);
  border-radius: 24px;
  box-shadow: var(--hover-shadow);
  max-width: 500px;
  animation: bounceIn 1s var(--transition-bounce);
}

.success-icon {
  font-size: 4rem;
  color: var(--tertiary-color);
  margin-bottom: var(--spacing-lg);
}

.success-title {
  color: var(--black);
  margin-bottom: var(--spacing-md);
}

.success-message {
  color: var(--medium-gray);
  margin-bottom: var(--spacing-xl);
}

/* ====================================
   Privacy & Terms Pages
==================================== */
.legal-page {
  padding-top: 100px;
  min-height: 100vh;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-lg);
}

.legal-content h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.legal-content h3 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.legal-content p {
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.legal-content ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

.legal-content li {
  margin-bottom: var(--spacing-xs);
  color: var(--medium-gray);
}

/* ====================================
   Utility Classes
==================================== */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-gradient {
  background: var(--gradient-primary);
}

.glass-effect {
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.hover-lift {
  transition: var(--transition-normal);
}

.hover-lift:hover {
  transform: translateY(-5px);
}

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

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3) translateY(-50px);
  }
  50% {
    opacity: 1;
    transform: scale(1.1) translateY(0);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* ====================================
   Responsive Design
==================================== */
@media (max-width: 768px) {
  .hero-section {
    background-attachment: scroll;
    min-height: 70vh;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-buttons .btn {
    width: 100%;
    max-width: 280px;
  }
  
  .section-padding {
    padding: var(--spacing-2xl) 0;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .card-image {
    height: 200px;
  }
  
  .instructor-img {
    width: 150px;
    height: 150px;
  }
  
  .success-content {
    padding: var(--spacing-xl);
    margin: var(--spacing-md);
  }
  
  .legal-content {
    padding: var(--spacing-xl) var(--spacing-sm);
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: var(--text-3xl);
  }
  
  .hero-subtitle {
    font-size: var(--text-base);
  }
  
  .section-title {
    font-size: var(--text-2xl);
  }
  
  .card-content {
    padding: var(--spacing-md);
  }
  
  .timeline-item {
    padding: var(--spacing-md);
  }
}

/* ====================================
   Print Styles
==================================== */
@media print {
  .navbar,
  .hero-section,
  .footer,
  .btn {
    display: none;
  }
  
  .section-padding {
    padding: var(--spacing-md) 0;
  }
  
  .neomorphism-card {
    box-shadow: none;
    border: 1px solid var(--medium-gray);
  }
}

/* ====================================
   High Contrast Mode
==================================== */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #0066CC;
    --secondary-color: #FF6600;
    --tertiary-color: #CC0000;
    --medium-gray: #333333;
    --dark-gray: #000000;
  }
}

/* ====================================
   Reduced Motion
==================================== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .parallax-bg {
    background-attachment: scroll;
  }
}