:root{
  --green:#2e7d32;
  --green-dark:#1b5e20;
  --bg:#f5f7f6;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --border:#e5e7eb;
}

*{
  box-sizing:border-box;
}

body{
  margin:0;
  font-family:Arial, Helvetica, sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}

a{
  text-decoration:none;
  color:inherit;
}

.container{
  width:min(1100px, 92%);
  margin:0 auto;
}

header{
  background:var(--green);
  color:#fff;
  padding:16px 0;
}

.navbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}

.logo{
  font-size:24px;
  font-weight:700;
}

.nav-links{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}

.nav-links a{
  color:#fff;
  font-weight:600;
}

.section{
  padding:60px 0;
}

.section h2{
  text-align:center;
  margin:0 0 30px;
  font-size:32px;
}

.card, .form-wrap, .login-wrap, .register-wrap{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:12px;
  padding:28px;
  box-shadow:0 3px 10px rgba(0,0,0,.05);
}

.card{
  max-width:700px;
  margin:0 auto;
}

.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}

.form-group{
  display:flex;
  flex-direction:column;
  gap:6px;
}

.full{
  grid-column:1 / -1;
}

label{
  font-weight:600;
}

input, select, textarea{
  width:100%;
  padding:12px;
  border:1px solid var(--border);
  border-radius:8px;
  font-size:15px;
}

button, .btn, .login-btn, .register-btn{
  display:inline-block;
  background:var(--green);
  color:#fff;
  border:none;
  padding:12px 18px;
  border-radius:8px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
}

button:hover, .btn:hover, .login-btn:hover, .register-btn:hover{
  background:var(--green-dark);
}

footer{
  background:#0f172a;
  color:#fff;
  text-align:center;
  padding:20px 0;
  margin-top:40px;
}

@media (max-width: 700px){
  .form-grid{
    grid-template-columns:1fr;
  }

  .section h2{
    font-size:28px;
  }
}