:root {
  --primary: #22c55e;
  --primary-dark: #16a34a;
  --bg-body: #f8fafc;
  --card-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  --text-main: #0f172a;
  --text-muted: #64748b;
}

body {
  background-color: var(--bg-body);
  font-family: "Inter", sans-serif;
  color: var(--text-main);
  min-height: 100vh;
  padding: 2rem 0;
}

.registration-container {
  max-width: 900px;
  margin: 0 auto;
}

.registration-card {
  background: white;
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: var(--card-shadow);
  border: 1px solid #e2e8f0;
}

.logo-section {
  text-align: center;
  margin-bottom: 2.5rem;
}

.logo-circle {
  width: 64px;
  height: 64px;
  background-color: #f0fdf4;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--primary);
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-subtitle {
  color: var(--text-muted);
  margin-bottom: 0;
}

.section-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid #f1f5f9;
  color: var(--text-main);
  display: flex;
  align-items: center;
}

.section-title i {
  margin-right: 0.75rem;
  color: var(--primary);
}

.form-label {
  font-weight: 500;
  font-size: 0.875rem;
  color: #475569;
  margin-bottom: 0.5rem;
}

.form-control,
.form-select {
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
  background-color: #f8fafc;
  font-size: 0.9375rem;
  transition: all 0.2s;
}

.form-control:focus,
.form-select:focus {
  background-color: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.1);
  outline: none;
}

.input-group-text {
  background-color: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  color: var(--text-muted);
}

.btn-register {
  background-color: var(--primary);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1.125rem;
  width: 100%;
  transition: all 0.2s;
  margin-top: 1.5rem;
}

.btn-register:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(34, 197, 94, 0.2);
  color: white;
}

.back-link {
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  margin-bottom: 1.5rem;
  transition: color 0.2s;
}

.back-link:hover {
  color: var(--primary);
}

.back-link i {
  margin-right: 0.5rem;
}

.optional-badge {
  font-size: 0.75rem;
  background-color: #f1f5f9;
  color: #64748b;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  margin-left: 0.5rem;
  font-weight: 400;
}

/* Help texts */
.form-text {
  font-size: 0.75rem;
  margin-top: 0.4rem;
}

@media (max-width: 768px) {
  .registration-card {
    padding: 1.5rem;
  }
}