/* Enterprise-Grade Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Enterprise Color Palette */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --dark-gradient: linear-gradient(135deg, #0c0c0c 0%, #1a1a1a 100%);
  --surface-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);

  /* Brand Colors */
  --brand-primary: #FF6B35;
  --brand-secondary: #F7931E;
  --brand-accent: #FFD23F;
  --brand-dark: #1B263B;
  --brand-light: #E9ECEF;

  /* Semantic Colors */
  --success: #28a745;
  --warning: #ffc107;
  --error: #dc3545;
  --info: #17a2b8;

  /* Typography */
  --font-primary: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-secondary: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

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

body {
  font-family: var(--font-primary);
  background: var(--dark-gradient);
  color: #ffffff;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Global Elements */
a {
  color: var(--brand-accent);
  text-decoration: none;
  transition: var(--transition-fast);
  position: relative;
}

a:hover {
  color: var(--brand-secondary);
  transform: translateY(-1px);
}

a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -2px;
  left: 0;
  background: var(--accent-gradient);
  transition: var(--transition-normal);
}

a:hover::after {
  width: 100%;
}

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  transition: var(--transition-normal);
}

img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-xl);
}

/* Utility Classes */
.glass-effect {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.animate-float {
  animation: float 6s ease-in-out infinite;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-20px);
  }
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* Enterprise Header Styles */
#header {
  background: var(--glass-effect);
  backdrop-filter: blur(20px);
  padding: var(--space-lg) var(--space-2xl);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
}

#header .row-1 {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

#header .fleft {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

#header .fleft .logo-container {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

#header .fleft .logo-container img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

#header .fleft .logo-container img:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-xl);
}

#header .fleft a {
  font-size: 1.75rem;
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
  letter-spacing: -0.025em;
}

#header .fleft a::after {
  display: none;
}

#header .fleft a span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#header .row-1 ul {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

#header .row-1 ul li a {
  color: #ffffff;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition-normal);
  backdrop-filter: blur(10px);
}

#header .row-1 ul li a:hover {
  background: var(--brand-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

#header .row-1 ul li a svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

#header .row-2 {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-md);
}

#header .row-2 ul {
  display: flex;
  gap: var(--space-xl);
  justify-content: center;
}

#header .row-2 ul li a {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-lg);
  transition: var(--transition-normal);
  position: relative;
}

#header .row-2 ul li a:hover,
#header .row-2 ul li a.active {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

#header .row-2 ul li a.active::before {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background: var(--brand-accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--brand-accent);
}

/* Hero/Slogan Section */
#slogan {
  padding: var(--space-3xl) var(--space-2xl);
  text-align: center;
  background: var(--surface-gradient);
  border-radius: var(--radius-2xl);
  margin: var(--space-2xl);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

#slogan::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.1) 0%, transparent 70%);
  animation: rotate 20s linear infinite;
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }

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

#slogan .inside {
  position: relative;
  z-index: 2;
}

#slogan h2 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: var(--space-xl);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

#slogan h2 span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

#slogan h2 span::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: 2px;
  opacity: 0.3;
}

#slogan p {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.6;
}

.link1 {
  background: var(--primary-gradient);
  color: white;
  padding: var(--space-lg) var(--space-2xl);
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  border-radius: var(--radius-xl);
  text-transform: uppercase;
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-xl);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.link1::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: var(--transition-slow);
}

.link1:hover::before {
  left: 100%;
}

.link1:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2xl);
}

.link1::after {
  display: none;
}

/* Enterprise Content Section */
.box {
  padding: var(--space-3xl);
  background: var(--surface-gradient);
  margin: var(--space-2xl);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--accent-gradient);
}

.border-right,
.border-left {
  border: none;
}

.inner h3 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--space-xl);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.inner h3 b {
  font-weight: 800;
}

.inner h3 span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.inner p {
  font-size: 1.125rem;
  margin-bottom: var(--space-xl);
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
}

.inner p b {
  color: var(--brand-accent);
  font-weight: 600;
}

.img-box1 {
  margin: var(--space-2xl) 0;
  text-align: center;
  position: relative;
}

.img-box1 img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  transition: var(--transition-normal);
  border: 2px solid rgba(255, 255, 255, 0.1);
}

.img-box1 img:hover {
  transform: scale(1.02) translateY(-5px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

.img-box1 p {
  margin-top: var(--space-lg);
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
  font-style: italic;
}

/* Enterprise Instructor Profile */
.instructor-profile {
  background: var(--surface-gradient);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-2xl);
  padding: var(--space-3xl);
  margin: var(--space-3xl) auto;
  max-width: 900px;
  text-align: center;
  box-shadow: var(--shadow-2xl);
  position: relative;
  overflow: hidden;
}

.instructor-profile::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
}

.instructor-profile img {
  width: 180px;
  height: 180px;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid transparent;
  background: var(--accent-gradient);
  padding: 4px;
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-xl);
  transition: var(--transition-normal);
}

.instructor-profile img:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-2xl);
}

.instructor-profile h4 {
  font-size: 2rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.instructor-profile p {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.linkedin-btn {
  display: inline-flex;
  align-items: center;
  background: linear-gradient(135deg, #0A66C2 0%, #004182 100%);
  color: #ffffff;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-xl);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.linkedin-btn::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: var(--transition-slow);
}

.linkedin-btn:hover::before {
  left: 100%;
}

.linkedin-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.linkedin-btn::after {
  display: none;
}

.linkedin-btn i {
  margin-right: var(--space-sm);
  font-size: 1.125rem;
}

/* Enterprise Footer */
#footer {
  background: var(--dark-gradient);
  padding: var(--space-3xl) var(--space-2xl);
  color: rgba(255, 255, 255, 0.7);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

#footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--accent-gradient);
}

#footer .footerlink {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  align-items: center;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

#footer .footerlink p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
}

#footer .lf {
  font-weight: 500;
}

#footer .rf {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.8rem;
}

#footer a {
  color: var(--brand-accent);
  font-weight: 600;
  transition: var(--transition-fast);
}

#footer a:hover {
  color: var(--brand-secondary);
}

#footer a::after {
  display: none;
}

/* Responsive */
@media screen and (max-width: 768px) {
  #header {
    padding: 20px;
    text-align: center;
  }

  #header .row-1 ul {
    float: none;
    margin-top: 10px;
  }

  #header .row-1 ul li {
    margin-left: 10px;
    margin-right: 10px;
  }

  #slogan h2 {
    font-size: 28px;
  }

  .inner h3 {
    font-size: 24px;
  }
}

.instructor-profile {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 30px;
  margin: 40px auto;
  max-width: 800px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.instructor-profile img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid #ff9900;
  margin-bottom: 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.instructor-profile h4 {
  font-size: 24px;
  color: #ffcc00;
  margin-bottom: 10px;
}

.instructor-profile p {
  font-size: 16px;
  color: #ddd;
  line-height: 1.6;
  margin-bottom: 20px;
}

.linkedin-btn {
  display: inline-flex;
  align-items: center;
  background-color: #0A66C2;
  color: #ffffff;
  padding: 10px 16px;
  border-radius: 30px;
  font-weight: bold;
  text-decoration: none;
  transition: background 0.3s ease;
}

.linkedin-btn:hover {
  background-color: #004182;
}

.linkedin-btn i {
  margin-right: 8px;
  font-size: 18px;
}

/* Navigation Enhancement */
#header .row-2 ul li {
  display: inline-block;
  margin-top: 10px;
  margin-right: 30px;
}

#header .row-2 ul li a {
  color: #ddd;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 20px;
  transition: all 0.3s ease;
}

#header .row-2 ul li a:hover,
#header .row-2 ul li a.active {
  background-color: #ff9900;
  color: #ffffff;
}

/* Enterprise Courses Section */
.courses-section {
  padding: var(--space-3xl) var(--space-2xl);
  background: var(--surface-gradient);
  backdrop-filter: blur(20px);
  margin: var(--space-2xl);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.courses-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
}

.courses-section h3 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  text-align: center;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-3xl);
  letter-spacing: -0.02em;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-2xl);
  max-width: 1400px;
  margin: 0 auto;
}

.course-card {
  background: var(--surface-gradient);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  text-align: center;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.course-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: var(--transition-normal);
}

.course-card:hover::before {
  transform: scaleX(1);
}

.course-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
  border-color: rgba(255, 255, 255, 0.3);
}

.course-card i {
  font-size: 4rem;
  margin-bottom: var(--space-xl);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: var(--transition-normal);
}

.course-card:hover i {
  transform: scale(1.1);
}

.course-card h4 {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-lg);
  letter-spacing: -0.01em;
}

.course-card p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-xl);
  line-height: 1.7;
  font-size: 1rem;
}

.course-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--primary-gradient);
  color: #ffffff;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-xl);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.course-btn::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: var(--transition-slow);
}

.course-btn:hover::before {
  left: 100%;
}

.course-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.course-btn::after {
  display: none;
}

/* Enhanced Instructor Profile */
.credentials {
  margin: 20px 0;
}

.badge {
  display: inline-block;
  background-color: #ff9900;
  color: #ffffff;
  padding: 6px 12px;
  border-radius: 15px;
  font-size: 12px;
  font-weight: bold;
  margin: 0 5px 10px 0;
}

.instructor-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin: 30px 0;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 24px;
  color: #ffcc00;
  margin-bottom: 5px;
}

.stat span {
  font-size: 14px;
  color: #bbb;
}

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

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #ff9900;
  animation: spin 1s ease-in-out infinite;
}

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

/* Form Enhancements */
input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus {
  outline: none;
  border: 2px solid #ff9900;
  box-shadow: 0 0 10px rgba(255, 153, 0, 0.3);
}

/* Mobile Responsiveness */
@media screen and (max-width: 768px) {
  .course-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .instructor-stats {
    gap: 20px;
  }

  .courses-section {
    padding: 40px 20px;
  }

  #header .row-2 ul li {
    margin-right: 15px;
  }
}