/* 
 * VoiceGuardAI - Main Stylesheet
 * Modern, clean design with cybersecurity theme
 */

/* Base styles and CSS Reset */
:root {
  --primary: #4361ee;
  --primary-dark: #3a56d4;
  --secondary: #4cc9f0;
  --accent: #7209b7;
  --dark: #2b2d42;
  --light: #f8f9fa;
  --gray: #8d99ae;
  --success: #06d6a0;
  --danger: #ef476f;
  --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --radius: 8px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background-color: var(--light);
}

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

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

h1 {
  font-size: 3.5rem;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 2rem;
}

h4 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1.5rem;
}

.text-center {
  text-align: center;
}

.text-gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.1rem;
}

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

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

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

.btn-accent:hover {
  background: #5a0891;
}

.btn-store {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background: var(--dark);
  border-radius: var(--radius);
  color: white;
  font-weight: 500;
  transition: var(--transition);
}

.btn-store:hover {
  background: #000;
  color: white;
  transform: translateY(-2px);
}

.btn-store img {
  height: 24px;
}

.btn-store span {
  display: flex;
  flex-direction: column;
  text-align: left;
  line-height: 1.2;
}

.btn-store .small-text {
  font-size: 0.7rem;
  opacity: 0.8;
}

.btn-store .big-text {
  font-size: 1.1rem;
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.header-scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 32px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-links a {
  color: var(--dark);
  font-weight: 500;
}

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

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

/* Hero Section */
.hero {
  padding: 160px 0 100px;
  background: url('../images/hero-bg.jpg') no-repeat center center;
  background-size: cover;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(67, 97, 238, 0.9) 0%, rgba(76, 201, 240, 0.8) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  color: white;
  max-width: 650px;
}

.hero h1 {
  margin-bottom: 1.5rem;
  font-size: 3.5rem;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-btns {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.hero-image {
  position: absolute;
  right: 0;
  bottom: 0;
  max-width: 50%;
  z-index: 2;
}

/* Impact Section */
.impact {
  padding: 100px 0;
  background-color: white;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  max-width: 700px;
  margin: 0 auto;
  color: var(--gray);
}

.stats-container {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 30px;
  margin-top: 50px;
}

.stat-item {
  text-align: center;
  flex: 1;
  min-width: 200px;
  padding: 30px;
  border-radius: var(--radius);
  background: white;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.stat-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.stat-label {
  font-size: 1.1rem;
  color: var(--dark);
}

/* How It Works Section */
.how-it-works {
  padding: 100px 0;
  background-color: #f8f9fa;
}

.steps-container {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  margin-top: 50px;
  flex-wrap: wrap;
}

.step-item {
  flex: 1;
  min-width: 250px;
  text-align: center;
  padding: 30px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.step-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.step-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--light);
  border-radius: 50%;
  color: var(--primary);
  font-size: 2rem;
}

.step-number {
  position: absolute;
  top: -10px;
  right: -10px;
  width: 30px;
  height: 30px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.step-title {
  margin-bottom: 15px;
  font-size: 1.5rem;
}

/* Features Section */
.features {
  padding: 100px 0;
  background-color: white;
}

.features-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.feature-item {
  padding: 30px;
  border-radius: var(--radius);
  background: white;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.feature-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.feature-title {
  margin-bottom: 15px;
  font-size: 1.5rem;
}

/* App Download Section */
.app-download {
  padding: 100px 0;
  background: var(--gradient);
  color: white;
  text-align: center;
}

.app-download h2 {
  margin-bottom: 20px;
}

.app-download p {
  max-width: 600px;
  margin: 0 auto 40px;
  opacity: 0.9;
}

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

.app-screenshot {
  margin-top: 50px;
  max-width: 300px;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* Testimonials Section */
.testimonials {
  padding: 100px 0;
  background-color: #f8f9fa;
}

.testimonials-container {
  display: flex;
  gap: 30px;
  overflow-x: auto;
  padding: 20px 0;
  scroll-snap-type: x mandatory;
  scrollbar-width: none; /* Firefox */
}

.testimonials-container::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Edge */
}

.testimonial-item {
  flex: 0 0 350px;
  scroll-snap-align: start;
  padding: 30px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.testimonial-content {
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 15px;
}

.author-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info h4 {
  margin-bottom: 5px;
  font-size: 1.1rem;
}

.author-info p {
  color: var(--gray);
  margin-bottom: 0;
  font-size: 0.9rem;
}

/* Footer */
footer {
  background-color: var(--dark);
  color: white;
  padding: 80px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 60px;
}

.footer-column h3 {
  margin-bottom: 20px;
  font-size: 1.2rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #ccc;
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
}

.social-links {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: white;
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.copyright {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #aaa;
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 992px) {
  h1 {
    font-size: 2.8rem;
  }
  
  h2 {
    font-size: 2.2rem;
  }
  
  .hero {
    padding: 140px 0 80px;
  }
  
  .hero-image {
    max-width: 45%;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: white;
    flex-direction: column;
    gap: 0;
    height: 0;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
  }
  
  .nav-links.active {
    height: auto;
    padding: 20px 0;
  }
  
  .nav-links li {
    width: 100%;
    text-align: center;
    padding: 15px 0;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .hero {
    padding: 120px 0 60px;
    text-align: center;
  }
  
  .hero-content {
    margin: 0 auto;
  }
  
  .hero-btns {
    justify-content: center;
  }
  
  .hero-image {
    position: relative;
    max-width: 80%;
    margin: 40px auto 0;
  }
  
  .steps-container, 
  .stats-container {
    flex-direction: column;
  }
  
  .step-item, 
  .stat-item {
    width: 100%;
  }
}

@media (max-width: 576px) {
  h1 {
    font-size: 2.2rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  .btn-lg {
    padding: 12px 24px;
  }
  
  .section-header {
    margin-bottom: 40px;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .hero-btns {
    flex-direction: column;
    gap: 10px;
  }
  
  .store-buttons {
    flex-direction: column;
    align-items: center;
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate {
  animation: fadeIn 0.8s ease forwards;
}

.delay-1 {
  animation-delay: 0.2s;
}

.delay-2 {
  animation-delay: 0.4s;
}

.delay-3 {
  animation-delay: 0.6s;
}