/* VANBA Premium Design System v2.0 */
/* Professional Premium UI/UX Design */

:root {
  /* Premium Color Palette */
  --primary-dark: #0a192f;
  --primary-navy: #112240;
  --primary-blue: #233554;
  --secondary-blue: #3b82f6;
  --accent-gold: #ffd700;
  --accent-cyan: #64ffda;
  --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-2: linear-gradient(135deg, #1a237e 0%, #0d47a1 100%);
  --gradient-3: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
  --gradient-premium: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #764ba2 100%);
  
  /* Neutral Colors */
  --white: #ffffff;
  --off-white: #f8f9fa;
  --light-gray: #e9ecef;
  --medium-gray: #adb5bd;
  --dark-gray: #495057;
  --charcoal: #2c3e50;
  --black: #000000;
  
  /* Typography - Premium Fonts */
  --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  
  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  
  /* Spacing Scale */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;
  
  /* Shadows - Premium Depth */
  --shadow-xs: 0 0 0 1px rgba(0, 0, 0, 0.05);
  --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);
  --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.3);
  --shadow-glow-gold: 0 0 30px rgba(255, 215, 0, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Breakpoints */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--charcoal);
  background-color: var(--off-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Selection Color */
::selection {
  background-color: var(--secondary-blue);
  color: var(--white);
}

/* Focus Styles for Accessibility */
*:focus-visible {
  outline: 2px solid var(--secondary-blue);
  outline-offset: 2px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-bold);
  line-height: 1.2;
  margin-bottom: var(--space-4);
  color: var(--primary-dark);
}

h1 {
  font-size: var(--text-5xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--text-4xl);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-3xl);
}

h4 {
  font-size: var(--text-2xl);
}

h5 {
  font-size: var(--text-xl);
}

h6 {
  font-size: var(--text-lg);
}

p {
  margin-bottom: var(--space-4);
  color: var(--dark-gray);
}

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

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

/* Buttons - Premium Style */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left var(--transition-slow);
}

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

.btn-primary {
  background: var(--gradient-1);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  background: var(--white);
  color: var(--secondary-blue);
  border: 2px solid var(--secondary-blue);
  box-shadow: var(--shadow-sm);
}

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

.btn-gold {
  background: linear-gradient(135deg, #ffd700, #ffb700);
  color: var(--primary-dark);
  box-shadow: var(--shadow-md), var(--shadow-glow-gold);
}

.btn-gold:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-xl), var(--shadow-glow-gold);
  color: var(--primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

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

/* Cards - Glassmorphism & Premium */
.card {
  background: var(--white);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-1);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

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

.card-glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-lg);
}

.card-gradient {
  background: var(--gradient-1);
  color: var(--white);
}

/* Navigation - Premium Sticky */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  padding: var(--space-4) var(--space-8);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: var(--space-2) var(--space-8);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-lg);
}

.nav-wrapper {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.logo {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base);
}

.logo:hover {
  transform: rotate(360deg);
}

.company-name {
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: var(--space-8);
  align-items: center;
}

.nav-links li a {
  color: var(--charcoal);
  text-decoration: none;
  font-weight: var(--font-medium);
  font-size: var(--text-base);
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--transition-fast);
}

.nav-links li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-1);
  transition: width var(--transition-base);
}

.nav-links li a:hover::after,
.nav-links li a.active::after {
  width: 100%;
}

.nav-links li a:hover,
.nav-links li a.active {
  color: var(--secondary-blue);
}

/* Hero Section - Premium Gradient */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-3);
  overflow: hidden;
  padding: var(--space-8);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('images/blured-img.jpeg') center/cover;
  opacity: 0.1;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  text-align: center;
  color: var(--white);
  animation: fadeInUp 1s ease-out;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  margin-bottom: var(--space-4);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  background: linear-gradient(135deg, #ffffff, #ffd700);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .slogan {
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  margin-bottom: var(--space-6);
  font-weight: var(--font-light);
  opacity: 0.95;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.3rem);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
  opacity: 0.9;
}

/* Feature Cards 3D */
.feature-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
  padding: var(--space-16) var(--space-8);
  max-width: 1400px;
  margin: 0 auto;
  perspective: 1000px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
}

.feature-card:nth-child(1) {
  background: linear-gradient(135deg, #ff6ec4, #7873f5);
}

.feature-card:nth-child(2) {
  background: linear-gradient(135deg, #42e695, #3bb78f);
}

.feature-card:nth-child(3) {
  background: linear-gradient(135deg, #f093fb, #f5576c);
}

.feature-card:hover {
  transform: rotateY(10deg) rotateX(5deg) scale(1.05);
  box-shadow: var(--shadow-2xl);
}

.feature-card h3 {
  color: var(--white);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.feature-card p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--text-base);
}

/* Team Section */
.team-section {
  padding: var(--space-20) var(--space-8);
  background: var(--white);
}

.section-title {
  text-align: center;
  font-size: clamp(2rem, 3vw, 3rem);
  margin-bottom: var(--space-4);
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: var(--dark-gray);
  font-size: var(--text-lg);
  margin-bottom: var(--space-16);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
  max-width: 1400px;
  margin: 0 auto;
}

.team-member {
  background: var(--white);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  text-align: center;
}

.team-member:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-2xl);
}

.team-member img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.team-member:hover img {
  transform: scale(1.1);
}

.member-info {
  padding: var(--space-6);
}

.member-info h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
  color: var(--primary-dark);
}

.member-role {
  color: var(--secondary-blue);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-3);
}

.member-bio {
  color: var(--dark-gray);
  font-size: var(--text-sm);
  line-height: 1.6;
}

/* Footer - Premium */
.footer {
  background: var(--gradient-2);
  color: var(--white);
  padding: var(--space-16) var(--space-8);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('images/blured-img.jpeg') center/cover;
  opacity: 0.05;
}

.footer-content {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-12);
}

.footer-section h3 {
  color: var(--accent-gold);
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--space-2);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  transition: all var(--transition-fast);
}

.footer-section a:hover {
  color: var(--accent-gold);
  padding-left: var(--space-2);
}

.footer-bottom {
  position: relative;
  z-index: 1;
  text-align: center;
  padding-top: var(--space-8);
  margin-top: var(--space-12);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
}

/* Scroll to Top Button */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--gradient-1);
  color: var(--white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  opacity: 0;
  transform: translateY(20px);
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-top:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

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

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .navbar {
    padding: var(--space-4);
  }
  
  .nav-links {
    gap: var(--space-4);
  }
  
  .hero {
    min-height: 70vh;
    padding: var(--space-4);
  }
  
  .feature-cards {
    grid-template-columns: 1fr;
    padding: var(--space-8) var(--space-4);
  }
  
  .team-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.p-0 { padding: 0; }
.p-4 { padding: var(--space-4); }
.p-8 { padding: var(--space-8); }

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-8);
}

/* Loading Animation */
.loading {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}