:root{--bg:#0f172a;--card:#111827;--text:#e5e7eb;--muted:#9ca3af;--accent:#ef4444;--btn:#22c55e;}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;background:linear-gradient(135deg,#0f172a,#111827);color:var(--text)}
a{color:var(--text);text-decoration:none}
header.site-header,footer.site-footer{padding:12px 16px;border-bottom:1px solid #1f2937}
footer.site-footer{border-top:1px solid #1f2937;border-bottom:none;text-align:center}
.container{max-width:1000px;margin:24px auto;padding:0 16px}
.card{background:rgba(17,24,39,.7);padding:16px;border:1px solid #1f2937;border-radius:12px;backdrop-filter:blur(6px)}
h1,h2,h3{margin:0 0 12px 0}
input[type=text],input[type=file]{width:100%;padding:10px;border-radius:8px;border:1px solid #374151;background:#0b1220;color:var(--text);margin:6px 0 12px 0}
button,.btn{display:inline-block;padding:10px 14px;border-radius:8px;border:1px solid #16a34a;background:linear-gradient(180deg,#22c55e,#16a34a);color:#001b0d;font-weight:600;cursor:pointer}
button:hover,.btn:hover{filter:brightness(1.05)}
.alert{padding:10px;border-radius:8px;margin:10px 0}
.alert.success{background:#052e1a;border:1px solid #16a34a}
.grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:900px){.grid{grid-template-columns:1fr 1fr}}
.preview{max-width:100%;height:auto;border:1px solid #374151;border-radius:12px}
.downloads{margin-top:10px;display:flex;gap:8px}
.store-links{display:flex;gap:12px;margin:14px 0;flex-wrap:wrap}
.store{border:1px solid #374151;padding:10px 16px;border-radius:8px}
.note{color:var(--muted);font-size:.95em;margin-top:12px}
.benefits ul{margin:8px 0 0 18px}

/* Professional Store Badges */
.store-badges {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin: 2rem 0;
  flex-wrap: wrap;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  background: linear-gradient(135deg, #000, #1a1a1a);
  color: white;
  text-decoration: none;
  border-radius: 12px;
  border: 1px solid #333;
  transition: all 0.3s ease;
  font-weight: 500;
  min-width: 160px;
  justify-content: center;
}

.store-badge:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.3);
  background: linear-gradient(135deg, #1a1a1a, #333);
}

.store-badge-icon {
  width: 24px;
  height: 24px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.google-play-icon {
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='%23fff' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M3,20.5V3.5C3,2.91 3.34,2.39 3.84,2.15L13.69,12L3.84,21.85C3.34,21.61 3,21.09 3,20.5M16.81,15.12L6.05,21.34L14.54,12.85L16.81,15.12M20.16,10.81C20.5,11.08 20.75,11.5 20.75,12C20.75,12.5 20.53,12.9 20.18,13.18L17.89,14.5L15.39,12L17.89,9.5L20.16,10.81M6.05,2.66L16.81,8.88L14.54,11.15L6.05,2.66Z'/%3E%3C/svg%3E");
}

.app-store-icon {
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='%23fff' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M18.71,19.5C17.88,20.74 17,21.95 15.66,21.97C14.32,22 13.89,21.18 12.37,21.18C10.84,21.18 10.37,21.95 9.1,22C7.79,22.05 6.8,20.68 5.96,19.47C4.25,17 2.94,12.45 4.7,9.39C5.57,7.87 7.13,6.91 8.82,6.88C10.1,6.86 11.32,7.75 12.11,7.75C12.89,7.75 14.37,6.68 15.92,6.84C16.57,6.87 18.39,7.1 19.56,8.82C19.47,8.88 17.39,10.19 17.41,12.63C17.44,15.65 20.06,16.66 20.09,16.67C20.06,16.74 19.67,18.11 18.71,19.5M13,3.5C13.73,2.67 14.94,2.04 15.94,2C16.07,3.17 15.6,4.35 14.9,5.19C14.21,6.04 13.07,6.7 11.95,6.61C11.8,5.46 12.36,4.26 13,3.5Z'/%3E%3C/svg%3E");
}

/* Feature Icons */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.feature-card {
  background: rgba(17,24,39,.8);
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid #374151;
  text-align: center;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 10px 30px rgba(239,68,68,0.1);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--accent), #dc2626);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text);
}

.feature-description {
  color: var(--muted);
  line-height: 1.6;
}

/* Professional Header */
.site-header {
  background: rgba(15,23,42,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(239,68,68,0.2);
}

.header-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent), #dc2626);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

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

.nav-links a {
  color: var(--muted);
  font-weight: 500;
  transition: color 0.3s ease;
}

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

.cta-button {
  background: linear-gradient(135deg, var(--accent), #dc2626);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(239,68,68,0.3);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 0;
  background: linear-gradient(135deg, rgba(15,23,42,0.9), rgba(17,24,39,0.9));
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
  .store-badges {
    flex-direction: column;
    align-items: center;
  }
  
  .nav-links {
    display: none;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
}