/* 
 * Main stylesheet for deepfakeapp.site
 * Features modern design with full mobile responsiveness
 * Created: July 2023
 */

/* Base styles and CSS reset */
:root {
  --primary-color: #6a11cb;
  --secondary-color: #2575fc;
  --accent-color: #ff6b6b;
  --dark-bg: #171a22;
  --light-bg: #f8f9fa;
  --text-dark: #171a22;
  --text-light: #f8f9fa;
  --text-gray: #6c757d;
  --card-bg: #ffffff;
  --border-radius: 12px;
  --transition-speed: 0.3s;
  --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--light-bg);
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: 1rem;
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
}

h2:after {
  content: "";
  position: absolute;
  width: 80px;
  height: 4px;
  background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 2px;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1rem;
}

section {
  padding: 5rem 1rem;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header and Navigation */
header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-light);
  position: relative;
  overflow: hidden;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  position: relative;
  z-index: 10;
}

.logo {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.5rem;
}

.logo-icon {
  margin-right: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-weight: 500;
  position: relative;
}

.nav-links a:hover {
  color: rgba(255, 255, 255, 0.8);
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: white;
  transition: width var(--transition-speed);
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
}

.menu-toggle span {
  height: 3px;
  width: 100%;
  background-color: white;
  border-radius: 10px;
}

/* Hero Section */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80vh;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.hero:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
  z-index: 1;
}

.hero-content {
  max-width: 600px;
  position: relative;
  z-index: 2;
}

.hero-visual {
  position: relative;
  z-index: 2;
  width: 45%;
  max-width: 600px;
  animation: float 6s ease-in-out infinite;
}

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

.cta-button {
  display: inline-block;
  background: var(--accent-color);
  color: white;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  margin-top: 1rem;
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(255, 107, 107, 0.4);
}

/* Features Section */
.features {
  background-color: var(--light-bg);
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--box-shadow);
  transition: transform var(--transition-speed);
}

.feature-card:hover {
  transform: translateY(-10px);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
}

/* How It Works Section */
.how-it-works {
  background-color: var(--dark-bg);
  color: var(--text-light);
}

.steps {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 2rem;
  margin: 3rem 0;
}

.step {
  text-align: center;
  max-width: 300px;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  font-size: 1.5rem;
  font-weight: bold;
  margin: 0 auto 1.5rem;
}

.cta-container {
  text-align: center;
  margin-top: 3rem;
}

/* Testimonials Section */
.testimonials {
  background-color: var(--light-bg);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--box-shadow);
}

.stars {
  color: gold;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.user {
  font-weight: 600;
  margin-top: 1rem;
  color: var(--text-gray);
}

/* FAQ Section */
.faq {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-light);
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  overflow: hidden;
}

.question {
  padding: 1.5rem;
  cursor: pointer;
  font-weight: 600;
  position: relative;
}

.question:after {
  content: '+';
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  transition: transform var(--transition-speed);
}

.faq-item.active .question:after {
  transform: translateY(-50%) rotate(45deg);
}

.answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-speed), padding var(--transition-speed);
}

.faq-item.active .answer {
  max-height: 200px;
  padding: 0 1.5rem 1.5rem;
}

/* Footer */
footer {
  background-color: var(--dark-bg);
  color: var(--text-light);
  padding: 3rem 1rem 1rem;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.footer-brand {
  font-weight: 700;
  font-size: 1.5rem;
  margin-top: 0.5rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-column h4 {
  margin-bottom: 1rem;
  position: relative;
}

.footer-column h4:after {
  content: "";
  position: absolute;
  width: 30px;
  height: 2px;
  background: var(--accent-color);
  bottom: -5px;
  left: 0;
}

.footer-column ul li {
  margin-bottom: 0.5rem;
}

.footer-column ul li a:hover {
  color: var(--accent-color);
}

.copyright {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
  color: var(--text-gray);
}

/* Responsive Design */
@media (max-width: 992px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 2rem;
  }
  
  .hero-content {
    margin-bottom: 2rem;
  }
  
  .hero-visual {
    width: 80%;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  section {
    padding: 3rem 1rem;
  }
  
  .menu-toggle {
    display: flex;
    z-index: 11;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: var(--primary-color);
    transition: right var(--transition-speed);
    z-index: 10;
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .nav-links li {
    margin: 1rem 0;
  }
  
  .footer-content {
    flex-direction: column;
  }
  
  .footer-logo {
    margin-bottom: 2rem;
  }
}

@media (max-width: 576px) {
  h1 {
    font-size: 1.75rem;
  }
  
  .steps {
    flex-direction: column;
    align-items: center;
  }
  
  .feature-card, .testimonial-card {
    padding: 1.5rem;
  }
}

/* Additional SVG styles */
.hero-svg {
  max-width: 100%;
  height: auto;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 1s ease-in;
}

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 2.5rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 2.5rem; }