/* ===== RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
  background: #f8fafc;
  color: #334155;
  line-height: 1.6;
}

/* ===== SHARED NAV ===== */
.nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: #ffffff;
  height: 70px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 8%;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  z-index: 1000;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: #007bff;
  text-transform: uppercase;
  letter-spacing: -0.5px;
}

.nav a {
  text-decoration: none;
  color: #64748b;
  margin-left: 25px;
  font-size: 14px;
  font-weight: 600;
  transition: 0.3s;
}

.nav a:hover {
  color: #007bff;
}

/* Special styling for "Join Now" in nav */
.nav a[href="signup.html"] {
  background: #007bff;
  color: #fff;
  padding: 8px 18px;
  border-radius: 50px;
}

/* ===== HERO SECTION ===== */
.hero {
  background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
  color: white;
  text-align: center;
  padding: 120px 20px 60px; /* Extra top padding for fixed nav */
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== CONTENT CONTAINER ===== */
.container, .features {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
}

/* ===== CARDS (For Terms & About) ===== */
.card {
  background: #fff;
  padding: 30px;
  border-radius: 12px;
  margin-bottom: 20px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.02);
  border: 1px solid #eef2f6;
}

.card h3 {
  color: #1e293b;
  margin-bottom: 12px;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
}

.card p {
  color: #64748b;
  font-size: 15px;
}

/* ===== ABOUT PAGE SPECIFIC (Features Grid) ===== */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

/* ===== CTA SECTION ===== */
.cta {
  text-align: center;
  padding: 60px 20px;
  background: #fff;
  border-top: 1px solid #eef2f6;
}

.btn {
  display: inline-block;
  padding: 15px 35px;
  background: #007bff;
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 700;
  margin-top: 20px;
  transition: 0.3s;
}

.btn:hover {
  background: #0056b3;
  transform: translateY(-2px);
}

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: 40px 20px;
  color: #94a3b8;
  font-size: 14px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav { padding: 0 5%; }
  .nav a:not([href="signup.html"]) { display: none; } /* Hide minor links on mobile nav */
  .hero h1 { font-size: 1.8rem; }
}