/* Root Colors */
:root {
  --primary-bg-color: #0A0D0B; 
  --primary-text-color: #9ACF8A; 
  --primary-color: #51B795; 
  --secondary-color: #28494E; 
  --accent-color: #00d4ff; 
  --background-color: #1b1b32; 
  --text-color: #ffffff; 
  --secondary-text-color: #cccccc; 
  --hover-color: #ff007a;
}

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

body {
  font-family: 'Poppins', sans-serif;
  background: var(--primary-bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

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

/* Header */
header {
  background: var(--primary-bg-color);
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  transition: opacity 3s cubic-bezier(0, 0.01, 0, 0.96);
}

header.scrolled {
  opacity: 0.75;
}

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

.logo {
  width: 5%;
  color: var(--primary-text-color);
}

nav a {
  color: var(--accent-color);
  text-decoration: none;
  margin-left: 20px;
  font-weight: 400;
  transition: color 0.3s;
}

nav a:hover {
  color: var(--hover-color);
}

/* Hero Section */
#hero {
  text-align: center;
  padding: 80px 20px;
  background: linear-gradient(135deg, var(--primary-bg-color), var(--primary-color));
}

#hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  color: var(--accent-color);
}

#hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.btn {
  padding: 12px 24px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.3s, transform 0.2s;
}

.btn.primary {
  background: var(--accent-color);
  color: var(--primary-bg-color);
}

.btn.primary:hover {
  background: var(--hover-color);
  transform: scale(1.05);
}

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

.btn.secondary:hover {
  border-color: var(--hover-color);
  color: var(--hover-color);
  transform: scale(1.05);
}

/* Features Section */
#features {
  padding: 60px 60px;
  background: var(--primary-bg-color);
}

#features h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 40px;
  color: var(--accent-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.feature {
  background: var(--secondary-color);
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
}
.feature-details {
  display: none;
  margin-top: 10px;
  font-size: 14px;
  background: var(--secondary-color);
  line-height: 1.5;
}

.feature.active {
  background: var(--secondary-color);
  box-shadow: 0 4px 8px rgba(0, 255, 0, 0.2);
}

.feature.active .feature-details {
  display: block;
}
.feature h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.feature p {
  font-size: 1rem;
  color: var(--secondary-text-color);
}

/* Demo Section */
#demo {
  padding: 60px 20px;
  text-align: center;
  background: var(--primary-bg-color);
}

#demo h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: var(--accent-color);
}

#demo p {
  font-size: 1.2rem;
  margin-bottom: 30px;
}

.video-placeholder iframe {
  max-width: 100%;
  border-radius: 10px;
}

/* Testimonials Section */
#testimonials {
  padding: 60px 20px;
  background: var(--primary-bg-color);
  opacity: 0; /* Başlangıçta görünmez */
  transition: opacity 1s ease-in-out;
}

#testimonials.show {
  opacity: 1; /* Efektle görünür olacak */
}
#testimonials h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 40px;
  color: var(--accent-color);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  overflow: hidden;
  flex-wrap: nowrap;
}

.testimonial {
  background: var(--secondary-color);
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  transform: translateY(20px);
  flex: 0 0 33.33%; /* En fazla 3 testimonial görünmesini sağlar */
  opacity: 0;
  transition: transform 0.6s ease-out, opacity 0.6s ease-out;
}

.testimonial.visible {
  transform: translateY(0);
  opacity: 1;
}
.testimonial p {
  font-style: italic;
  margin-bottom: 10px;
  color: var(--secondary-text-color);
}

.testimonial h4 {
  font-size: 1.2rem;
  color: var(--accent-color);
}

/* Try Now Section */
#try-now {
  padding: 60px 20px;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-bg-color), var(--primary-color));
}

#try-now h2 {
  margin-bottom: 20px;
  color: var(--accent-color);
}

#try-now p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

#try-now .btn {
  font-size: 1.2rem;
  padding: 15px 30px;
}

/* Footer */
footer {
  padding: 20px;
  background: var(--primary-bg-color);
  text-align: center;
}

footer p {
  font-size: 0.9rem;
  color: var(--secondary-text-color);
}

.social-links a {
  color: var(--accent-color);
  text-decoration: none;
  margin: 0 10px;
  font-size: 0.9rem;
}

.social-links a:hover {
  color: var(--hover-color);
}

/* Responsive Design */
@media (max-width: 768px) {
  header .container {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
  }

  nav {
    margin-top: 0;
    display: flex;
    flex-direction: row; /* ← Yatay hale getir */
    flex-wrap: wrap;
    gap: 10px;
    font-size: 14px; /* ← Fontu küçült */
  }

  nav a {
    margin: 0 8px;
    font-size: 14px; /* ← Link fontu küçült */
  }

  .logo {
    width: 100%;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin-bottom: 10px;
  }

  #hero h1 {
    font-size: 2rem;
  }

  #hero p {
    font-size: 1rem;
    padding: 0 10px;
  }

  .cta-buttons {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .feature {
    text-align: left;
  }

  .feature h3 {
    font-size: 1.25rem;
  }

  .feature p,
  .feature-details {
    font-size: 0.95rem;
  }

  footer {
    text-align: center;
  }

  .social-links {
    flex-direction: column;
    gap: 5px;
    margin-top: 10px;
  }
}

@media (max-width: 480px) {
  #hero h1 {
    font-size: 1.5rem;
  }

  #features h2,
  #demo h2 {
    font-size: 2rem;
  }

  #hero,
  #features,
  #try-now,
  #demo {
    padding: 40px 10px;
  }

  .btn {
    font-size: 1rem;
    padding: 10px 16px;
  }

  .feature {
    padding: 15px;
  }
}


#popupOverlay {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.popupContent {
  background: var(--primary-bg-color);
  padding: 30px;
  border-radius: 10px;
  width: 90%;
  max-width: 400px;
  text-align: center;
  position: relative;
  color: var(--text-color);
}

.popupContent input, .popupContent textarea {
  width: 80%;
  padding: 10px;
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid #ccc;
}

.popupContent button {
  width: 80%;
  padding: 10px;
  border: none;
  border-radius: 5px;
  background-color: #007bff;
  color: white;
  cursor: pointer;
}

#closePopup {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 24px;
  cursor: pointer;
  color: var(--accent-color);
}