/* BitwbiApp Marketing Website Styles */

:root {
  --primary-color: #66CAA5;
  --primary-dark: #4FA085;
  --primary-light: #7DD4B5;
  --primary-bg: #E6F7F2;
  --text-dark: #1F2937;
  --text-gray: #6B7280;
  --bg-white: #FFFFFF;
  --bg-light: #F9FAFB;
  --border-color: #E5E7EB;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Header */
header {
  background: var(--bg-white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-dark);
}

.logo img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s ease;
}

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

.download-btn {
  background: var(--primary-color);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.download-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 202, 165, 0.3);
}

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

/* Hero Section */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-bg) 0%, var(--bg-white) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(102, 202, 165, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.hero-text p {
  font-size: 1.25rem;
  color: var(--text-gray);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--primary-color);
  color: white;
  padding: 1rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 202, 165, 0.3);
}

.btn-secondary {
  background: white;
  color: var(--primary-color);
  padding: 1rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  display: inline-block;
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-bg);
  transform: translateY(-2px);
}

/* Section Styles */
section {
  padding: 5rem 2rem;
}

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

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.section-subtitle {
  font-size: 1.25rem;
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 4rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--primary-bg);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.feature-card p {
  color: var(--text-gray);
  line-height: 1.7;
}

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

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

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1.5rem;
}

.step h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.step p {
  color: var(--text-gray);
}

/* Use Cases */
.use-cases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.use-case-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  border-left: 4px solid var(--primary-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.use-case-card:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.use-case-card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.use-case-card p {
  color: var(--text-gray);
}

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

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.testimonial-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.testimonial-text {
  font-size: 1.1rem;
  font-style: italic;
  color: var(--text-gray);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.testimonial-author {
  font-weight: 600;
  color: var(--text-dark);
}

/* Footer */
footer {
  background: var(--text-dark);
  color: white;
  padding: 4rem 2rem 2rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h3 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.75rem;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}

/* Content Pages */
.content-page {
  padding: 4rem 2rem;
  min-height: 70vh;
}

.content-container {
  max-width: 900px;
  margin: 0 auto;
}

.content-page h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.content-page h2 {
  font-size: 1.75rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.content-page h3 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.content-page p {
  margin-bottom: 1.5rem;
  color: var(--text-gray);
  line-height: 1.8;
}

.content-page ul, .content-page ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
  color: var(--text-gray);
}

.content-page li {
  margin-bottom: 0.75rem;
  line-height: 1.7;
}

.content-page img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 2rem 0;
}

/* Contact Form */
.contact-form {
  background: white;
  padding: 3rem;
  border-radius: 16px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  margin-top: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

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

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: 0.25rem;
}

.checkbox-group label {
  font-weight: normal;
  font-size: 0.9rem;
}

/* Download Page */
.download-section {
  text-align: center;
  padding: 4rem 2rem;
}

.download-buttons {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 3rem 0;
  flex-wrap: wrap;
}

.download-btn-large {
  display: inline-block;
  padding: 1rem 2rem;
  background: var(--primary-color);
  color: white;
  text-decoration: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
}

.download-btn-large:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 202, 165, 0.3);
}

.qr-code {
  margin: 3rem 0;
}

.qr-code img {
  max-width: 300px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.requirements {
  background: var(--bg-light);
  padding: 2rem;
  border-radius: 16px;
  margin: 3rem 0;
  text-align: left;
}

.requirements h3 {
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.requirements ul {
  list-style: none;
  padding-left: 0;
}

.requirements li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.requirements li:last-child {
  border-bottom: none;
}

/* Responsive */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }

  .nav-links.active {
    display: flex;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-text h1 {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .features-grid,
  .steps,
  .use-cases,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 2rem 1.5rem;
  }

  .download-buttons {
    flex-direction: column;
    align-items: center;
  }
}

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

.fade-in {
  animation: fadeIn 0.6s ease-out;
}