:root {
  --primary-dark: #1a1a2e;
  --secondary-dark: #16213e;
  --accent-green: #4caf50;
  --accent-orange: #ff6b35;
  --accent-blue: #2196f3;
  --bright-green: #76ff03;
  --light-green: #63ab2c;
  --gold: #ffd700;
  --white: #ffffff;
  --gray: #a0a0a0;
  /*--gradient-bg: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);*/
}

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

body {
  font-family: "Inter", sans-serif;
  background: #242424;
  color: var(--white);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* Banner Section */
.banner-section {
  text-align: center;
  margin-bottom: 2rem;
  padding: 1rem 0;
}

.banner-image {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Header Section */
.header {
  text-align: center;
  padding: 2rem 0;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.subtitle {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 2rem;
}

.text-green {
  color: var(--light-green);
}

.download-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin: 2rem 0;
  flex-wrap: wrap;
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border-radius: 4px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.btn-android {
  background: linear-gradient(45deg, var(--accent-green), var(--bright-green));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

.btn-ios {
  background: linear-gradient(45deg, var(--white), #f5f5f5);
  color: var(--primary-dark);
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
}

.btn:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

/* Features Section */
.features {
  display: flex;
  gap: 2rem;
  margin: 3rem 0;
  flex-wrap: wrap;
}

.feature-box {
  flex: 1;
  min-width: 300px;
  background: linear-gradient(135deg, var(--secondary-dark), var(--primary-dark));
  border-radius: 12px;
  padding: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.feature-content h3 {
  margin-bottom: 0.5rem;
}

.security-icon {
  margin-top: 2rem;
  background-color: rgba(74, 158, 255, 0.2);
  border-radius: 50%;
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.benefits-list {
  list-style: none;
  margin-top: 1.5rem;
}

.benefits-list li {
  display: flex;
  align-items: flex-start;
  margin-bottom: 1rem;
  gap: 0.75rem;
}

.check-icon {
  background: linear-gradient(45deg, var(--accent-green), var(--bright-green));
  color: var(--white);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Download Instructions */
.download-instructions {
  display: flex;
  gap: 2rem;
  margin: 3rem 0;
}

.instructions-column {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.divider {
  width: 1px;
  background-color: rgba(255, 255, 255, 0.1);
}

.step-box {
  background: linear-gradient(45deg, var(--accent-orange), #ff8a50);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin: 1rem 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 600;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.step {
  background: linear-gradient(135deg, rgba(22, 33, 62, 0.9), rgba(26, 26, 46, 0.9));
  border-radius: 8px;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* FAQ Section */
.faq {
  margin: 4rem 0 2rem;
}

.faq-subtitle {
  color: var(--gray);
  margin-bottom: 2rem;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
  gap: 1rem;
}

.faq-item {
  background: linear-gradient(135deg, var(--secondary-dark), var(--primary-dark));
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-number {
  background: linear-gradient(45deg, var(--accent-blue), #42a5f5);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--white);
}

.faq-question {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-question h3 {
  font-size: 1rem;
  font-weight: 500;
}

.expand-btn {
  background: none;
  border: none;
  color: var(--white);
  cursor: pointer;
}

/* FAQ Functionality Styles */
.faq-content {
  flex: 1;
}

.faq-question {
  cursor: pointer;
  user-select: none;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding: 0 1rem;
}

.faq-item.expanded .faq-answer {
  padding: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 0.5rem;
}

.expand-btn svg {
  transition: transform 0.3s ease;
}

.faq-item.expanded .expand-btn svg {
  transform: rotate(180deg);
}

.faq-item:hover {
  background: linear-gradient(135deg, rgba(22, 33, 62, 0.8), rgba(26, 26, 46, 0.8));
  transform: translateY(-2px);
  transition: all 0.3s ease;
}

.faq-answer p {
  color: var(--gray);
  line-height: 1.6;
  font-size: 0.95rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .container {
    padding: 1.5rem 1rem;
  }

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

@media (max-width: 768px) {
  .container {
    padding: 1rem 0.5rem;
  }

  /* Header adjustments */
  h1 {
    font-size: 2rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
  }

  .subtitle {
    font-size: 1rem;
    padding: 0 1rem;
    margin-bottom: 1.5rem;
  }

  /* Banner adjustments */
  .banner-section {
    margin-bottom: 1.5rem;
    padding: 0.5rem 0;
  }

  .banner-image {
    border-radius: 8px;
    max-height: 200px;
    object-fit: cover;
  }

  /* Download buttons */
  .download-buttons {
    flex-direction: column;
    gap: 0.75rem;
    padding: 0 1rem;
  }

  .btn {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
  }

  /* Features section */
  .features {
    flex-direction: column;
    gap: 1.5rem;
    margin: 2rem 0;
  }

  .feature-box {
    min-width: auto;
    padding: 1.5rem;
  }

  .security-icon {
    width: 100px;
    height: 100px;
    margin-top: 1.5rem;
  }

  .security-icon svg {
    width: 60px;
    height: 60px;
  }

  /* Download instructions */
  .download-instructions {
    flex-direction: column;
    gap: 1.5rem;
    margin: 2rem 0;
  }

  .divider {
    height: 1px;
    width: 100%;
    margin: 1rem 0;
  }

  .instructions-column h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }

  .step-box {
    padding: 1rem;
    margin: 1rem 0;
    font-size: 0.95rem;
  }

  .steps {
    gap: 0.75rem;
    margin-bottom: 1.5rem;
  }

  .step {
    padding: 1rem;
    font-size: 0.95rem;
  }

  /* FAQ section */
  .faq {
    margin: 3rem 0 2rem;
  }

  .faq h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
  }

  .faq-subtitle {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    padding: 0 0.5rem;
  }

  .faq-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .faq-item {
    padding: 1rem;
    align-items: flex-start;
  }

  .faq-number {
    width: 28px;
    height: 28px;
    font-size: 0.9rem;
    margin-top: 0.2rem;
  }

  .faq-question h3 {
    font-size: 0.95rem;
    line-height: 1.4;
  }

  .faq-answer {
    padding: 0;
  }

  .faq-item.expanded .faq-answer {
    padding: 0.75rem 0 0 0;
    margin-top: 0.75rem;
  }

  .faq-answer p {
    font-size: 0.9rem;
    line-height: 1.5;
  }

  .expand-btn {
    padding: 0.5rem;
    margin-left: 0.5rem;
  }

  .expand-btn svg {
    width: 20px;
    height: 20px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0.75rem 0.25rem;
  }

  /* Header */
  h1 {
    font-size: 1.75rem;
    padding: 0 0.5rem;
  }

  .subtitle {
    font-size: 0.95rem;
    padding: 0 0.75rem;
  }

  /* Banner */
  .banner-image {
    max-height: 150px;
    border-radius: 6px;
  }

  /* Buttons */
  .btn {
    padding: 0.875rem 1rem;
    font-size: 0.95rem;
  }

  /* Features */
  .feature-box {
    padding: 1.25rem;
    margin: 0 0.25rem;
  }

  .benefits-list li {
    gap: 0.5rem;
    margin-bottom: 0.75rem;
  }

  .check-icon {
    width: 20px;
    height: 20px;
    font-size: 0.8rem;
  }

  /* Instructions */
  .instructions-column h2 {
    font-size: 1.3rem;
    padding: 0 0.5rem;
  }

  .step-box {
    margin: 0.75rem 0.25rem;
    padding: 0.875rem;
    font-size: 0.9rem;
  }

  .step {
    padding: 0.875rem;
    margin: 0 0.25rem;
    font-size: 0.9rem;
  }

  /* FAQ */
  .faq h2 {
    font-size: 1.6rem;
    padding: 0 0.5rem;
  }

  .faq-subtitle {
    padding: 0 0.75rem;
  }

  .faq-item {
    padding: 0.875rem;
    margin: 0 0.25rem;
  }

  .faq-content {
    width: 100%;
  }

  .faq-question {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .faq-question h3 {
    font-size: 0.9rem;
    flex: 1;
    min-width: 0;
  }

  .expand-btn {
    padding: 0.25rem;
    margin-left: 0;
  }

  .expand-btn svg {
    width: 18px;
    height: 18px;
  }
}

@media (max-width: 360px) {
  .container {
    padding: 0.5rem 0.125rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  .subtitle {
    font-size: 0.9rem;
  }

  .btn {
    padding: 0.75rem;
    font-size: 0.9rem;
  }

  .feature-box {
    padding: 1rem;
  }

  .faq-item {
    padding: 0.75rem;
  }

  .step,
  .step-box {
    padding: 0.75rem;
    font-size: 0.85rem;
  }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
  .btn:hover {
    transform: none;
  }

  .btn:active {
    transform: scale(0.98);
  }

  .faq-item:hover {
    transform: none;
  }

  .faq-question:active {
    background: rgba(255, 255, 255, 0.05);
  }

  .expand-btn {
    min-width: 44px;
    min-height: 44px;
  }
}

/* Landscape mobile adjustments */
@media (max-width: 768px) and (orientation: landscape) {
  .banner-image {
    max-height: 120px;
  }

  .features {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .feature-box {
    flex: 1;
    min-width: 280px;
  }

  .download-instructions {
    flex-direction: row;
  }

  .divider {
    width: 1px;
    height: auto;
    margin: 0 1rem;
  }
}