:root {
  --bg-color: #0B0E14;
  --surface-color: #121824;
  --surface-hover: #1A2130;
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --border-color: rgba(255, 255, 255, 0.05);
  --border-glow: rgba(6, 182, 212, 0.2);
  
  --primary-color: #06b6d4;
  --primary-hover: #0891b2;
  --gradient-cyan: linear-gradient(135deg, #22d3ee, #0ea5e9);
  --gradient-purple: linear-gradient(135deg, #38bdf8, #818cf8);
  --gradient-blue: linear-gradient(135deg, #0ea5e9, #3b82f6);
  --gradient-cyan-blue: linear-gradient(135deg, #22d3ee, #3b82f6);
  
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Outfit', system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

p {
  color: var(--text-secondary);
}

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

.gradient-purple {
  background: var(--gradient-purple);
  -webkit-background-clip: text;
}
.gradient-blue {
  background: var(--gradient-blue);
  -webkit-background-clip: text;
}
.gradient-purple-blue {
  background: var(--gradient-cyan-blue);
  -webkit-background-clip: text;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(11, 14, 20, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.site-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
}

.site-logo span {
  color: #818cf8;
}

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

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
}

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

.header-dl-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--gradient-cyan);
  color: #000;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: opacity 0.2s, transform 0.2s;
}

.header-dl-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--gradient-cyan);
  color: #000;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
  border-radius: 12px;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 72px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(11, 14, 20, 0.4), rgba(11, 14, 20, 0.8)),
    url('../img/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: -1;
  opacity: 1;
}

.hero-container {
  max-width: 800px;
}

.badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.2);
  color: var(--primary-color);
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 72px;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-subtext {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.scroll-down {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-secondary);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
  40% { transform: translateY(-10px) translateX(-50%); }
  60% { transform: translateY(-5px) translateX(-50%); }
}

/* Sections */
.section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  background: var(--surface-hover);
}

.icon-wrapper {
  width: 48px;
  height: 48px;
  background: rgba(6, 182, 212, 0.1);
  color: var(--primary-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  font-family: Helvetica, Arial, sans-serif;
  font-size: 18px;
  margin-bottom: 0.75rem;
}

/* Steps Section */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: center;
}

.step-card {
  position: relative;
}

.step-icon-glow {
  width: 80px;
  height: 80px;
  margin: 0 auto 2rem;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.2), rgba(59, 130, 246, 0.2));
  padding: 2px;
  position: relative;
}

.step-icon-glow::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: 24px;
  background: var(--gradient-cyan-blue);
  filter: blur(15px);
  opacity: 0.4;
  z-index: -1;
}

.step-icon {
  width: 100%;
  height: 100%;
  background: var(--bg-color);
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
}

.step-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  letter-spacing: 2px;
}

.step-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* FAQ Section */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.1);
}

.faq-item.active {
  border-color: var(--border-glow);
}

.faq-toggle {
  width: 100%;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  font-family: var(--font-sans);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  text-align: left;
}

.faq-toggle .chevron {
  color: var(--text-secondary);
  transition: transform 0.3s ease;
}

.faq-item.active .chevron {
  transform: rotate(180deg);
  color: var(--primary-color);
}

.faq-content {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-content {
  padding: 0 1.5rem 1.5rem;
}

/* CTA Section */
.cta-box {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 4rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 2px;
  background: var(--gradient-cyan-blue);
  opacity: 0.5;
}

.cta-box .stars {
  color: #06b6d4;
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
  gap: 0.25rem;
}

.cta-box h2 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.cta-box p {
  max-width: 500px;
  margin: 0 auto 2rem;
  font-size: 1.1rem;
}

.download-options {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.apk-downloads {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.apk-downloads .btn {
  min-width: 220px;
}

.version-info {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
  position: relative;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

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

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.footer-copyright {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.built-with {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.02);
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 992px) {
  .hero h1 { font-size: 3.5rem; }
  .steps-grid { grid-template-columns: 1fr; gap: 3rem; }
  .footer-content { flex-direction: column; gap: 1.5rem; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero h1 { font-size: 2.5rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; max-width: 300px; }
  .download-options .btn { width: 100%; max-width: 320px; }
  .apk-downloads { width: 100%; flex-direction: column; align-items: center; }
  .cta-box h2 { font-size: 2.5rem; }
}