/* Modern CSS for the4N Website - Sleek, Less Corporate Design */

/* CSS Variables for Theme Management */
:root {
  /* Light Theme Colors */
  --primary-color: #0a1929;
  --secondary-color: #63c4ab;
  --accent-color: #ee1c4e;
  --background-color: #ffffff;
  --text-color: #333333;
  --text-secondary: #666666;
  --card-bg: #f8f9fa;
  --border-color: #e0e0e0;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --hero-bg: linear-gradient(135deg, #0a1929 0%, #1a3a5f 100%);
  --gradient-primary: linear-gradient(135deg, #0a1929 0%, #1a3a5f 100%);
  --gradient-secondary: linear-gradient(45deg, #63c4ab, #0a1929);
  --transition-speed: 0.4s;
  --border-radius: 12px;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

[data-theme="dark"] {
  /* Dark Theme Colors */
  --primary-color: #f0f8ff;
  --secondary-color: #63c4ab;
  --accent-color: #ee1c4e;
  --background-color: #0a1929;
  --text-color: #f0f8ff;
  --text-secondary: #b0c4de;
  --card-bg: #1a2e45;
  --border-color: #2a3e5c;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  --hero-bg: linear-gradient(135deg, #0a1929 0%, #1a3a5f 100%);
  --gradient-primary: linear-gradient(135deg, #0a1929 0%, #1a3a5f 100%);
  --gradient-secondary: linear-gradient(45deg, #63c4ab, #0a1929);
  --transition-speed: 0.4s;
  --border-radius: 12px;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

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

body {
  font-family: var(--font-primary);
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
  font-size: 16px;
  font-weight: 400;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header Styles */
header {
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: all var(--transition-speed) ease;
  border-bottom: 1px solid var(--border-color);
  padding: 15px 0;
}

[data-theme="dark"] header {
  background-color: rgba(8, 15, 25, 0.98);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
}

.logo-container {
  flex-shrink: 0;
}

#logo, #logo-dark {
  height: 40px;
  width: auto;
  transition: opacity 0.5s ease;
}

#logo-dark {
  display: none;
}

[data-theme="dark"] #logo {
  display: none;
}

[data-theme="dark"] #logo-dark {
  display: block;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 25px;
}

nav a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  padding: 8px 0;
  position: relative;
  transition: color var(--transition-speed) ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.85rem;
  padding: 10px 15px;
  border-radius: 6px;
  transition: all var(--transition-speed) ease;
}


nav a:hover {
  color: var(--secondary-color);
  background: rgba(99, 196, 171, 0.1);
}

nav a.active {
  color: var(--secondary-color);
  background: rgba(99, 196, 171, 0.1);
}

/* Theme Toggle */
.theme-toggle {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background-color: var(--card-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 1px solid var(--border-color);
  transition: all var(--transition-speed) ease;
  position: relative;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-speed) ease;
}

.theme-toggle:hover {
  background-color: var(--secondary-color);
  color: white;
  transform: rotate(15deg) scale(1.05);
}

.sun-icon, .moon-icon {
  position: absolute;
  font-size: 18px;
  opacity: 1;
  transition: opacity var(--transition-speed) ease;
}

.sun-icon {
  opacity: 1;
}

.moon-icon {
  opacity: 0;
}

[data-theme="dark"] .sun-icon {
  opacity: 0;
}

[data-theme="dark"] .moon-icon {
  opacity: 1;
}

/* Hero Section */
.hero {
  background: var(--hero-bg);
  color: white;
  padding: 120px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-bottom: 2rem;
  border-radius: var(--border-radius);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
  transform: rotate(30deg);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: -0.5px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.highlight {
  color: var(--secondary-color);
  font-weight: 700;
  position: relative;
  display: inline-block;
  padding: 0 10px;
}

.highlight::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--secondary-color);
  opacity: 0.7;
  transform: translateY(2px);
  border-radius: 2px;
}

.hero p {
  font-size: 1.3rem;
  max-width: 700px;
  margin: 0 auto 40px;
  color: #fff;
  line-height: 1.7;
  font-weight: 300;
  text-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

/* CTA Buttons */
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.btn {
  padding: 16px 32px;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-speed) ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
  min-width: 180px;
  box-shadow: var(--shadow);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--gradient-secondary);
  color: white;
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite;
  position: relative;
  overflow: hidden;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.btn-primary:hover {
  background-size: 200% 200%;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(99, 196, 171, 0.4);
  z-index: 2;
}

.btn-secondary {
  background-color: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(5px);
  transition: all var(--transition-speed) ease;
}

[data-theme="dark"] .btn-secondary {
  background-color: transparent;
  color: #fff;
  border: 2px solid rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
  transition: all var(--transition-speed) ease;
}

.btn-secondary:hover {
  background-color: white;
  color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
  border: 2px solid white;
}

/* Features Section */
.features {
  padding: 100px 0;
  text-align: center;
  position: relative;
}

.features h2 {
  font-size: 2.5rem;
  margin-bottom: 60px;
  color: var(--text-color);
  font-weight: 700;
  position: relative;
  display: inline-block;
  padding-bottom: 15px;
  margin-left: auto;
  margin-right: auto;
}

.features h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: var(--secondary-color);
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(99, 196, 171, 0.3);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 35px;
}

.feature-card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 40px 30px;
  transition: all var(--transition-speed) cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  transform: translateZ(0);
  border: none;
  transition: all var(--transition-speed) ease;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--secondary-color);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-speed) ease;
  z-index: 1;
}

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

.feature-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
  z-index: 2;
}

.feature-icon {
  font-size: 3.5rem;
  margin-bottom: 25px;
  transition: transform var(--transition-speed) ease;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0a1929 0%, #1a3a5f 100%);
  color: white;
  margin: 0 auto 25px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 6px 20px rgba(99, 196, 171, 0.2);
}

.feature-card h3 {
  font-size: 1.6rem;
  margin-bottom: 15px;
  color: var(--text-color);
  font-weight: 600;
  letter-spacing: -0.2px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 0;
}

/* Stats Section */
.stats {
  padding: 100px 0;
  background: linear-gradient(135deg, #f0f8ff 0%, #e6f4ff 100%);
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius);
}

[data-theme="dark"] .stats {
  background: linear-gradient(135deg, #0a1929 0%, #1a3a5f 100%);
}

.stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 10% 20%, rgba(99, 196, 171, 0.05) 0%, transparent 20%),
    radial-gradient(circle at 90% 80%, rgba(238, 28, 78, 0.05) 0%, transparent 20%);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 35px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-item h3 {
  font-size: 3rem;
  color: var(--secondary-color);
  margin-bottom: 10px;
  font-weight: 700;
  background: linear-gradient(45deg, #63c4ab, #ee1c4e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item p {
  color: var(--text-secondary);
  font-size: 1.2rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Footer */
footer {
  background-color: var(--primary-color);
  color: white;
  padding: 70px 0 40px;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--secondary-color), transparent);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 40px;
  position: relative;
  z-index: 1;
}

.footer-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.footer-logo img {
  height: 35px;
  width: auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 25px;
  flex-wrap: wrap;
}

.footer-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-speed) ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.9rem;
  padding: 5px 10px;
  border-radius: 4px;
  transition: all var(--transition-speed) ease;
}

[data-theme="dark"] .footer-links a {
  color: #333;
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-speed) ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.9rem;
  padding: 5px 10px;
  border-radius: 4px;
  transition: all var(--transition-speed) ease;
}

.footer-links a:hover {
  color: var(--secondary-color);
  background: rgba(255, 255, 255, 0.1);
}

.footer-text {
  text-align: center;
  color: #fff;
  font-size: 0.95rem;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .footer-text {
  text-align: center;
  color: #333;
  font-size: 0.95rem;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Contact Page Styles */
.contact-content {
  padding: 80px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 50px;
}

.contact-info h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  font-weight: 600;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-size: 1.1rem;
  line-height: 1.7;
}

.contact-methods {
  margin-bottom: 30px;
}

.method h3 {
  color: var(--secondary-color);
  margin-bottom: 10px;
  font-size: 1.2rem;
  font-weight: 600;
}

.method p {
  color: var(--text-secondary);
  margin-bottom: 15px;
  line-height: 1.6;
}

.social-links h3 {
  color: var(--secondary-color);
  margin-bottom: 15px;
  font-size: 1.2rem;
  font-weight: 600;
}

.social-icons {
  display: flex;
  gap: 15px;
}

.social-icons a {
  display: inline-block;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--card-bg);
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.2rem;
  transition: all var(--transition-speed) ease;
  border: 1px solid var(--border-color);
}

.social-icons a:hover {
  background-color: var(--secondary-color);
  color: white;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 4px 15px rgba(99, 196, 171, 0.2);
}

.contact-form h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  font-weight: 600;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  background-color: var(--card-bg);
  color: var(--text-color);
  font-size: 1rem;
  transition: border-color var(--transition-speed) ease;
  font-family: var(--font-primary);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(99, 196, 171, 0.2);
}

.map-section {
  padding: 80px 0;
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  margin-top: 40px;
}

.map-placeholder {
  text-align: center;
  padding: 40px 20px;
  border-radius: var(--border-radius);
  background-color: var(--background-color);
  box-shadow: var(--shadow);
}

.map-placeholder p {
  margin-bottom: 10px;
  color: var(--text-color);
}

/* Services Page Styles */
.services-overview {
  padding: 100px 0;
}

.overview-text {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px;
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.service-card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 40px 30px;
  text-align: center;
  transition: all var(--transition-speed) ease;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  border: none;
  transition: all var(--transition-speed) ease;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
  z-index: 2;
}

.service-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  color: var(--secondary-color);
  display: flex;
  justify-content: center;
  align-items: center;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: rgba(99, 196, 171, 0.1);
  margin: 0 auto 20px;
}

.service-card h3 {
  font-size: 1.6rem;
  margin-bottom: 15px;
  color: var(--text-color);
  font-weight: 600;
}

.service-card p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1rem;
  line-height: 1.6;
}

.service-details {
  padding: 100px 0;
  background-color: var(--card-bg);
}

.details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.detail-item {
  padding: 30px;
  background-color: var(--background-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: all var(--transition-speed) ease;
}

.detail-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.detail-item h3 {
  color: var(--secondary-color);
  margin-bottom: 15px;
  font-size: 1.3rem;
  font-weight: 600;
}

.detail-item p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.cta-section {
  padding: 100px 0;
  text-align: center;
  background: var(--hero-bg);
  color: white;
  border-radius: var(--border-radius);
  margin-top: 40px;
}

.cta-content h2 {
  font-size: 2.2rem;
  margin-bottom: 20px;
  font-weight: 700;
}

.cta-content p {
  font-size: 1.3rem;
  max-width: 700px;
  margin: 0 auto 40px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* About Page Styles */
.about-hero {
  background: var(--hero-bg);
  color: white;
  padding: 120px 0;
  text-align: center;
  border-radius: var(--border-radius);
}

.about-content {
  padding: 100px 0;
}

.about-text h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: var(--text-color);
  font-weight: 700;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-size: 1.1rem;
  line-height: 1.8;
}

.team {
  padding: 100px 0;
  background-color: var(--card-bg);
}

.team h2 {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 60px;
  color: var(--text-color);
  font-weight: 700;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.team-member {
  text-align: center;
  padding: 30px;
  background-color: var(--background-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: all var(--transition-speed) ease;
}

.team-member:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.member-avatar {
  margin-bottom: 20px;
}

.avatar-placeholder {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background-color: var(--card-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  margin: 0 auto;
  border: 2px solid var(--border-color);
}

.role {
  color: var(--secondary-color);
  font-weight: 600;
  margin-bottom: 15px;
  font-size: 1.1rem;
}

.values {
  padding: 100px 0;
}

.values h2 {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 60px;
  color: var(--text-color);
  font-weight: 700;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.value-card {
  padding: 30px;
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: all var(--transition-speed) ease;
}

.value-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.value-card h3 {
  color: var(--secondary-color);
  margin-bottom: 15px;
  font-size: 1.3rem;
  font-weight: 600;
}

.value-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
  header .container {
    flex-direction: column;
    gap: 15px;
  }
  
  nav ul {
    gap: 20px;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .features h2 {
    font-size: 2rem;
  }
  
  .stat-item h3 {
    font-size: 2.5rem;
  }
  
  .feature-card {
    padding: 30px 20px;
  }
}

@media (max-width: 480px) {
  nav ul {
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .hero {
    padding: 80px 0;
  }
  
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .btn {
    padding: 14px 24px;
    min-width: 150px;
  }
  
  .stats {
    padding: 60px 0;
  }
}