:root {
  --header-height: 87px;
  --bg-color: #ffffff;
  --border-color: #e5e5e5;
  --primary-color: #0E73BA;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: Arial, Helvetica, sans-serif;
  background: #f4f4f4;
  color: #111;
}

/* Header */
header {
  height: var(--header-height);
  background: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 55px;
  width: auto;
}

/* Contact button */
.contact-btn {
  padding: 14px 16px;
  background: var(--primary-color);
  color: #fff;
  text-decoration: none;
  border-radius: 24px;
  font-size: 17px;
  font-weight: 600;
  transition: background 0.2s ease;
}

.contact-btn:hover {
  background: #3399D4;
}

/* Content */
main {
  padding: 0;
}

/* Iframe */
.fp-iframe {
  width: 100%;
  height: calc(100vh - var(--header-height));
  border: 0;
  display: block;
}

/* Mobile tweaks */
@media (max-width: 600px) {
  header {
    padding: 0 16px;
  }

  .contact-btn {
    padding: 8px 14px;
    font-size: 13px;
  }
}