:root {
  --bg: #090a0f;
  --panel: rgba(17, 18, 28, 0.6);
  --border: rgba(255, 255, 255, 0.08);
  --text-1: #f3f4f6;
  --text-2: #9ca3af;
  --accent: #8b5cf6;
  --accent-glow: rgba(139, 92, 246, 0.3);
  --pink: #ec4899;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

body {
  background-color: var(--bg);
  color: var(--text-1);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background lights */
body::before {
  content: '';
  position: absolute;
  top: -10%;
  left: 20%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

body::after {
  content: '';
  position: absolute;
  top: 40%;
  right: 10%;
  width: 40vw;
  height: 40vw;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.08) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 80px 24px;
}

/* Header */
header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 80px;
}

.logo-container {
  margin-bottom: 24px;
  animation: float 6s ease-in-out infinite;
}

.logo-img {
  width: 96px;
  height: 96px;
  filter: drop-shadow(0 0 30px var(--accent-glow));
}

h1 {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--text-1) 30%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tagline {
  font-size: 1.25rem;
  color: var(--text-2);
  max-width: 600px;
  margin-bottom: 32px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--pink) 100%);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  padding: 14px 32px;
  border-radius: 99px;
  box-shadow: 0 10px 30px rgba(139, 92, 246, 0.3);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px rgba(139, 92, 246, 0.45);
}

/* Features Grid */
.features-title {
  font-family: var(--font-display);
  font-size: 2rem;
  text-align: center;
  margin-bottom: 40px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-bottom: 80px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  backdrop-filter: blur(16px);
  border-radius: 20px;
  padding: 32px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.3);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.card-desc {
  color: var(--text-2);
  font-size: 0.95rem;
}

/* Tabs for Privacy / Info */
.tabs-container {
  background: var(--panel);
  border: 1px solid var(--border);
  backdrop-filter: blur(16px);
  border-radius: 24px;
  padding: 40px;
  margin-bottom: 80px;
}

.tab-nav {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-2);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  cursor: pointer;
  padding: 8px 16px;
  position: relative;
  transition: color 0.2s var(--ease);
}

.tab-btn:hover {
  color: var(--text-1);
}

.tab-btn.active {
  color: var(--text-1);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -17px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--pink));
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.tab-pane h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.tab-pane p {
  color: var(--text-2);
  margin-bottom: 16px;
  font-size: 0.975rem;
}

.tab-pane ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 24px;
}

.tab-pane li {
  color: var(--text-2);
  margin-bottom: 12px;
  padding-left: 20px;
  position: relative;
  font-size: 0.95rem;
}

.tab-pane li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* Footer */
footer {
  text-align: center;
  border-top: 1px solid var(--border);
  padding-top: 40px;
  color: var(--text-2);
  font-size: 0.9rem;
}

footer a {
  color: var(--text-1);
  text-decoration: none;
  transition: color 0.2s;
}

footer a:hover {
  color: var(--pink);
}

/* Animations */
@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@media (max-width: 600px) {
  h1 {
    font-size: 2.5rem;
  }
  .tabs-container {
    padding: 24px;
  }
  .tab-nav {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
}