:root {
  --blue-light: #c8e0ff;
  --blue-medium: #77adff;
  --blue-dark: #3483ff;
  --text-dark: #142b4d;
  --text-medium: #364e6f;
  --text-light: #6c86a8;
  --white: #ffffff;
  --shadow-color: rgba(20, 43, 77, 0.1);
  --transition-speed: 0.3s;
}

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

body {
  font-family: 'Vazirmatn', system-ui, -apple-system, sans-serif;
  background: linear-gradient(135deg, #e6f2ff 0%, #d5e7ff 100%);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

.app-container {
  max-width: 700px;
  width: 100%;
  margin: 0 auto;
}

/* Logo Styles */
.logo-container {
  margin-bottom: 1.5rem;
}

.app-logo {
  width: 80px;
  height: 80px;
  background-color: var(--blue-dark);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 8px 24px rgba(52, 131, 255, 0.2);
  transition: transform var(--transition-speed);
}

.app-logo:hover {
  transform: translateY(-5px);
}

/* Title Styles */
.app-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 2rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

/* Platform Tabs */
.platform-tabs {
  margin-bottom: 2rem;
}

.nav-tabs-container {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.nav-pills {
  background-color: var(--white);
  border-radius: 50px;
  padding: 0.5rem;
  box-shadow: 0 4px 16px var(--shadow-color);
  display: inline-flex;
}

.nav-pills .nav-link {
  border-radius: 50px;
  padding: 0.75rem 2rem;
  margin: 0 0.25rem;
  color: var(--text-medium);
  font-weight: 500;
  transition: all var(--transition-speed);
}

.nav-pills .nav-link:hover {
  color: var(--text-dark);
  background-color: rgba(52, 131, 255, 0.05);
}

.nav-pills .nav-link.active {
  background-color: var(--blue-dark);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(52, 131, 255, 0.3);
}

/* Download Cards */
.download-card {
  background-color: var(--white);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  box-shadow: 0 6px 20px var(--shadow-color);
  transition: all var(--transition-speed);
  height: 100%;
}

.download-option {
  text-decoration: none;
  color: var(--text-dark);
  display: block;
  height: 100%;
}

.download-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px var(--shadow-color);
}

.download-icon {
  width: 50px;
  height: 50px;
  min-width: 50px;
  border-radius: 12px;
  margin-left: 1rem;
  overflow: hidden;
}

.download-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-speed);
}

.download-card:hover .download-icon img {
  transform: scale(1.1);
}

.download-text {
  text-align: right;
}

.download-text p {
  margin-bottom: 0.25rem;
  color: var(--text-light);
  font-size: 0.9rem;
}

.download-text h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-dark);
}

/* QR Code Section */
.qr-section {
  margin-top: 3rem;
}

.qr-container {
  background-color: var(--white);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 6px 20px var(--shadow-color);
}

.qr-text {
  flex: 1;
  padding-left: 1.5rem;
}

.qr-text p {
  margin: 0;
  font-size: 1.1rem;
  color: var(--text-medium);
}

.qr-code {
  width: 100px;
  height: 100px;
  min-width: 100px;
}

/* Responsive Adjustments */
@media (max-width: 767px) {
  .app-title {
    font-size: 2rem;
  }
  
  .nav-pills .nav-link {
    padding: 0.5rem 1.25rem;
  }
  
  .qr-container {
    flex-direction: column;
    text-align: center;
  }
  
  .qr-text {
    padding-left: 0;
    margin-bottom: 1.5rem;
  }
  
  .qr-code {
    margin: 0 auto;
  }
}

@media (max-width: 576px) {
  .app-title {
    font-size: 1.75rem;
  }
}