:root {
  --primary: #397FAB;
  --white: #ffffff;
  --gray: #f4f4f4;
  --dark: #222;
}

body {
  margin: 0;
  font-family: 'Helvetica Neue', sans-serif;
  background-color: var(--white);
  color: var(--dark);
  line-height: 1.6;
  padding-top: 60px;
}

.container {
  max-width: 1200px;
  margin: auto;
  padding: 1rem;
}

header.main-header {
  background-color: var(--primary);
  padding: 0.2rem 0;
  color: var(--white);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 999;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  height: 60px;
  width: auto;
  display: block;
}

.brand-name {
  font-size: 1.7rem;
  font-weight: bold;
  color: var(--white);
}

.nav-links a {
  color: var(--white);
  margin-left: 1rem;
  text-decoration: none;
  font-weight: 500;
}

.nav-links a.cta {
  background-color: var(--white);
  color: var(--primary);
  padding: 0.5rem 1rem;
  border-radius: 5px;
}

.hero {
  background-color: var(--gray);
  padding: 4rem 1rem;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--white);
  padding: 0.75rem 1.5rem;
  border: none;
  text-decoration: none;
  font-size: 1rem;
  border-radius: 5px;
  display: inline-block;
  margin-top: 1rem;
}

.features {
  padding: 3rem 1rem;
  background: var(--white);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.feature-box {
  background: var(--gray);
  padding: 2rem;
  border-radius: 8px;
}

.about {
  padding: 3rem 1rem;
}

footer {
  background-color: var(--gray);
  padding: 1rem;
  text-align: center;
  font-size: 0.9rem;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 400px;
  margin: 2rem auto;
}

.auth-form input,
.auth-form button {
  padding: 0.75rem;
  font-size: 1rem;
}

.auth-form button {
  background-color: #397FAB;
  color: white;
  border: none;
  cursor: pointer;
}

.auth-form button:hover {
  background-color: #2f6c9d;
}

.error {
  color: red;
  font-size: 0.9rem;
}

/* GRID voor dashboard */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.card {
  background: var(--gray);
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.tabs h2 {
  margin-top: 3rem;
  font-size: 1.5rem;
}

.investment-card {
  display: flex;
  gap: 1rem;
  background: var(--gray);
  padding: 1rem;
  border-radius: 8px;
  align-items: center;
}

.investment-card img {
  width: 100px;
  height: auto;
  border-radius: 4px;
  object-fit: cover;
}

.card button {
  margin-top: 1rem;
}

.how-to-start {
  background-color: #f9f9f9;
  padding: 60px 0;
  text-align: center;
}

.how-to-start h2 {
  font-size: 2rem;
  margin-bottom: 40px;
}

.steps-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 50px;
}

.step-box {
  flex: 1 1 200px;
  max-width: 220px;
  background-color: #f2f2f2;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  text-align: center;
}

.step-box h3 {
  color: #397FAB;
  margin-bottom: 10px;
}

.house-gallery {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.house-gallery img {
  width: 350px;
  height: 230px;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}