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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, sans-serif;
  background: #0a0a0a;
  color: #d4d4d4;
  min-height: 100vh;
}

a { color: #7c9cff; text-decoration: none; }
a:hover { text-decoration: underline; }

/* NAV */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 2.5rem;
  border-bottom: 1px solid #1a1a1a;
}
.logo {
  font-size: 1.2rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.5px;
}
.nav-links { display: flex; gap: 1.5rem; align-items: center; }
.nav-links a { font-size: 0.9rem; color: #999; }
.nav-links a:hover { color: #fff; text-decoration: none; }
.btn-nav {
  background: #1a1a2e;
  color: #7c9cff !important;
  padding: 0.45rem 1.1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  border: 1px solid #2a2a4a;
}
.btn-nav:hover { background: #222244; text-decoration: none !important; }

/* HERO */
.hero {
  text-align: center;
  padding: 6rem 2rem 4rem;
  max-width: 620px;
  margin: 0 auto;
}
.hero h1 {
  font-size: 2.8rem;
  color: #fff;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 1rem;
}
.hero p {
  font-size: 1.05rem;
  color: #777;
  line-height: 1.7;
  margin-bottom: 2rem;
}
.hero-buttons { display: flex; gap: 1rem; justify-content: center; }
.btn-primary {
  background: #4466ff;
  color: #fff;
  padding: 0.75rem 1.8rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
}
.btn-primary:hover { background: #3355ee; text-decoration: none; }
.btn-secondary {
  color: #888;
  padding: 0.75rem 1.2rem;
  font-size: 0.95rem;
}

/* FEATURES */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 2rem 5rem;
}
.feature {
  background: #111;
  border: 1px solid #1a1a1a;
  border-radius: 10px;
  padding: 2rem 1.5rem;
}
.feature-icon { font-size: 1.6rem; margin-bottom: 0.8rem; }
.feature h3 { color: #eee; font-size: 1rem; margin-bottom: 0.5rem; }
.feature p { color: #666; font-size: 0.85rem; line-height: 1.6; }

/* FOOTER */
footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid #1a1a1a;
  color: #444;
  font-size: 0.8rem;
}
footer a { color: #555; }

/* AUTH PAGES */
.auth-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
}
.auth-page .logo {
  margin-bottom: 2.5rem;
  font-size: 1.3rem;
}
.auth-box {
  background: #111;
  border: 1px solid #1a1a1a;
  border-radius: 12px;
  padding: 2.5rem;
  width: 100%;
  max-width: 400px;
}
.auth-box h2 {
  color: #fff;
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
}
.auth-box label {
  display: block;
  font-size: 0.8rem;
  color: #888;
  margin-bottom: 0.4rem;
  margin-top: 1rem;
}
.auth-box label:first-of-type { margin-top: 0; }
.auth-box input {
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: #0a0a0a;
  border: 1px solid #222;
  border-radius: 6px;
  color: #ddd;
  font-size: 0.9rem;
  outline: none;
}
.auth-box input:focus { border-color: #4466ff; }
.auth-box button {
  width: 100%;
  padding: 0.75rem;
  margin-top: 1.5rem;
  background: #4466ff;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
}
.auth-box button:hover { background: #3355ee; }
.auth-box button:disabled { background: #333; color: #666; cursor: wait; }
.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.8rem;
  color: #555;
}
.auth-footer a { color: #7c9cff; }
.auth-footer span { margin: 0 0.4rem; color: #333; }

/* EMAIL INPUT GROUP */
.email-input-group {
  display: flex;
  align-items: center;
  background: #0a0a0a;
  border: 1px solid #222;
  border-radius: 6px;
  overflow: hidden;
}
.email-input-group input {
  border: none;
  border-radius: 0;
  flex: 1;
}
.email-input-group input:focus { border: none; }
.email-suffix {
  padding: 0 0.9rem;
  color: #555;
  font-size: 0.85rem;
  white-space: nowrap;
  border-left: 1px solid #222;
  background: #0f0f0f;
}

/* ERROR BOX */
.error-box {
  background: #1a0a0a;
  border: 1px solid #3a1515;
  border-radius: 6px;
  padding: 0.75rem 1rem;
  color: #ff6b6b;
  font-size: 0.82rem;
  line-height: 1.5;
  margin-bottom: 0.5rem;
}

/* RESPONSIVE */
@media (max-width: 700px) {
  .features { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  nav { padding: 1rem 1.2rem; }
}