/* NexChat Landing - Pure CSS */
@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --bg: #0D0D1A;
  --bg-card: #16162A;
  --primary: #6C63FF;
  --primary-light: rgba(108, 99, 255, 0.2);
  --accent: #FF6584;
  --accent-light: rgba(255, 101, 132, 0.15);
  --text: #FFFFFF;
  --text-muted: #A0A0B8;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
  --font: 'Cairo', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse 40% 30% at 50% 20%, var(--primary-light) 0%, transparent 50%),
              radial-gradient(ellipse 60% 40% at 80% 80%, var(--accent-light) 0%, transparent 45%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 420px;
}

.logo-img {
  width: 100px;
  height: 100px;
  margin: 0 auto 1.5rem;
  display: block;
  object-fit: contain;
  animation: float 4s ease-in-out infinite;
}

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

.hero h1 {
  font-size: clamp(2rem, 6vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #fff 0%, var(--text-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .tagline {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-weight: 500;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.btn-primary {
  background: linear-gradient(145deg, var(--primary) 0%, #8B84FF 100%);
  color: white;
  box-shadow: 0 8px 24px rgba(108, 99, 255, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 12px 32px rgba(108, 99, 255, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Features */
.features {
  padding: 4rem 1.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.features h2 {
  text-align: center;
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--text);
}

.feature-grid {
  display: grid;
  gap: 1.25rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.feature-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Footer */
.footer {
  padding: 2rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--border);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

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

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

.footer .email a {
  color: var(--primary);
  text-decoration: none;
}

/* Privacy page */
.privacy-page {
  min-height: 100vh;
  padding: 2rem 1.5rem 3rem;
  max-width: 720px;
  margin: 0 auto;
}

.privacy-page h1 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.privacy-page .updated {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.privacy-page h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 1.5rem 0 0.75rem;
  color: var(--text);
}

.privacy-page p, .privacy-page li {
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.privacy-page ul {
  margin: 0.5rem 0 1rem 1.5rem;
}

.privacy-page a {
  color: var(--primary);
  text-decoration: none;
}

.privacy-page a:hover {
  text-decoration: underline;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  margin-bottom: 2rem;
  transition: color 0.2s;
}

.back-link:hover {
  color: var(--primary);
}

@media (min-width: 600px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}