.site-header {
  background: rgba(0,0,0,0.9);
}
.signup-section {
  padding: 140px 20px 120px 20px;
  background: url("images/SummitSitesGlitterBG.png") center center / cover no-repeat;
  text-align: center;
}
.signup-container {
  max-width: 620px;
  margin: 0 auto;
  padding: 70px 55px;
  background: linear-gradient(180deg, var(--card), var(--card-color));
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 25px 60px rgba(0,0,0,0.6);
}
.signup-title {
  font-size: 2.6rem;
  font-weight: 350;
  color: var(--primary-color);
  margin-bottom: 10px;
  letter-spacing: 1px;
}
.signup-subtitle {
  font-size: 1rem;
  width: 80%;
  color: var(--muted);
  padding-bottom: 40px;
  margin: auto;
}
.signup-form {
  text-align: left;
}
.signup-form .form-group {
  margin-bottom: 32px;
}
.signup-form label {
  display: block;
  font-size: 0.95rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 10px;
}
.signup-form input,
.signup-form textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.08);
  background: var(--light-shadow-color);
  color: var(--muted-darker);
  font-size: 0.95rem;
  font-family: "Parkinsans", sans-serif;
  transition: border 0.3s ease, box-shadow 0.3s ease;
}
.signup-form input::placeholder,
.signup-form textarea::placeholder {
  color: var(--muted-darker);
  font-family: "Parkinsans", sans-serif;
}
.signup-form input::placeholder,
.signup-form textarea::placeholder {
  color: var(--muted-darker);
}
.signup-form button {
  margin: 40px auto 0 auto;
  display: block;
  width: 50%;
  padding: 18px 4px;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  font-family: "Parkinsans", sans-serif;
  text-transform: uppercase;
  border-radius: 15px;
  border: none;
  background: var(--primary-color-hover);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.3s ease;
  box-shadow: 0 0 18px rgba(60,201,151,0.5);
}
.signup-form button:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 28px rgba(60,201,151,0.7);
}
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(18, 18, 18, 0.75);
  backdrop-filter: blur(4px);
  justify-content: center;
  align-items: center;
  z-index: 999;
  transition: opacity 0.3s ease;
}
.modal-content {
  background: var(--card);
  padding: 30px 40px;
  border-radius: 12px;
  color: var(--text);
  text-align: center;
  font-size: 1.1em;
  box-shadow: 0 15px 35px var(--shadow-color);
  border: 1px solid var(--primary-color-shadow);
  max-width: 400px;
  width: 90%;
  animation: pop-in 0.35s ease-out;
}
@keyframes pop-in {
  0% {
    transform: scale(0.95);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}
.modal-content p {
  margin: 0;
  line-height: 1.5;
}