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

:root {
  --primary: #0F62FE; /* Vibrant strong blue */
  --primary-light: #4589FF;
  --secondary: #001D6C; /* Deep navy */
  --accent: #FF832B; /* Vibrant orange accent for CTAs */
  --accent-hover: #F1751D;
  --bg-color: #F4F7FB;
  --white: #FFFFFF;
  --text-main: #161616;
  --text-muted: #525252;
  --border-color: rgba(0, 0, 0, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.5);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px  ২৪px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 8px 30px rgba(15, 98, 254, 0.3);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--secondary);
  margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
p { margin-bottom: 1rem; color: var(--text-muted); font-size: 1.125rem; }

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
  position: relative;
}

.section-light { background-color: var(--white); }
.section-dark { 
  background-color: var(--secondary); 
  color: var(--white);
}
.section-dark h2, .section-dark p { color: var(--white); }
.section-dark p { opacity: 0.9; }

/* Flex/Grid Utilities */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1.125rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
}

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

.btn-primary:hover {
  background-color: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(15, 98, 254, 0.4);
  color: var(--white);
}

.btn-accent {
  background-color: var(--accent);
  color: var(--white);
  box-shadow: 0 8px 30px rgba(255, 131, 43, 0.3);
}

.btn-accent:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(255, 131, 43, 0.4);
  color: var(--white);
}

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

.btn-outline:hover {
  background-color: var(--primary);
  color: var(--white);
}

.btn-light {
  background-color: var(--white);
  color: var(--primary);
}
.btn-light:hover {
  background-color: rgba(255,255,255,0.9);
  transform: translateY(-2px);
}

/* Glass Card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 90px;
}

.logo {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--secondary);
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo img {
  width: 40px;
  height: 40px;
}

.logo span {
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  color: var(--text-main);
  font-weight: 500;
  font-size: 1.05rem;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--primary);
  transition: var(--transition);
}

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

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--secondary);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  padding-top: 120px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -10%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(15, 98, 254, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 650px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background-color: rgba(15, 98, 254, 0.1);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 24px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.hero h1 {
  margin-bottom: 24px;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 40px;
  color: var(--text-muted);
}

.hero-image {
  position: relative;
  z-index: 1;
}

.hero-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  animation: float 6s ease-in-out infinite;
}

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

/* Service Cards */
.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid var(--border-color);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.service-icon {
  width: 70px;
  height: 70px;
  background: rgba(15, 98, 254, 0.1);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 2rem;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(15, 98, 254, 0.2);
}

.service-card:hover .service-icon {
  background: var(--primary);
  color: var(--white);
  transform: scale(1.1);
}

.service-card h3 {
  margin-bottom: 16px;
  font-size: 1.5rem;
}

.service-card p {
  flex-grow: 1;
}

/* Footers */
footer {
  background-color: var(--secondary);
  color: rgba(255, 255, 255, 0.7);
  padding: 80px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 1.25rem;
  margin-bottom: 24px;
}

.footer-col p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1rem;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
}

.footer-links a:hover {
  color: var(--white);
  padding-left: 5px;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

/* Page Header (Inner pages) */
.page-header {
  padding: 160px 0 80px;
  background: linear-gradient(135deg, var(--secondary) 0%, #001244 100%);
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><path d="M10 10h10v10H10z" fill="rgba(255,255,255,0.03)"/></svg>') repeat;
  opacity: 0.5;
}

.page-header h1 {
  color: var(--white);
  position: relative;
  z-index: 1;
}

.page-header p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* Forms */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--secondary);
}

.form-control {
  width: 100%;
  padding: 14px 20px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  background: var(--white);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(15, 98, 254, 0.1);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

/* Responsive */
@media (max-width: 991px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 150px;
  }
  
  .hero-content {
    margin-bottom: 60px;
  }
  
  .grid-cols-2, .grid-cols-3 {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none; /* simple mobile menu toggle via JS not fully implemented, hiding for simple display */
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .flex.justify-between.items-center.gap-8 {
    flex-direction: column;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
}

/* Animations that trigger on scroll */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Content blocks for pages */
.content-block {
  background: var(--white);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 30px;
}
.content-block h2 { font-size: 2rem; }
.content-block h3 { font-size: 1.5rem; margin-top: 2rem; margin-bottom: 1rem; }
.content-block ul { list-style: disc inside; margin-bottom: 1rem; color: var(--text-muted); }
.content-block li { margin-bottom: 0.5rem; }