:root {
  --clr-green-200: #dff1e7;
  --clr-green-600: #0c7d69;
  --clr-green-800: #063f35;
  --clr-red: #d73c3c;
  --clr-white: #ffffff;
  --clr-grey-500: #87a3a0;
  --clr-grey-900: #2b2b2b;
  --ff-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--ff-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--clr-grey-900);
  background-color: var(--clr-green-200);
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

main {
  width: 100%;
  max-width: 46rem;
}

.card {
  background-color: var(--clr-white);
  padding: 2.5rem;
  border-radius: 1rem;
  box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.05);
}

h1 {
  font-size: 2rem;
  letter-spacing: -0.05em;
  margin-bottom: 2rem;
  color: var(--clr-grey-900);
}

form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 40em) {
  .row {
    grid-template-columns: 1fr 1fr;
  }
}

.field {
  display: flex;
  flex-direction: column;
  border: none;
}

label, legend {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.asterisk {
  color: var(--clr-green-600);
  margin-left: 0.2rem;
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--clr-grey-500);
  border-radius: 0.5rem;
  font-family: inherit;
  font-size: 1rem;
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="text"]:hover,
input[type="email"]:hover,
textarea:hover,
.radio-option:hover {
  border-color: var(--clr-green-600);
}

input:focus-visible,
textarea:focus-visible,
button:focus-visible {
  outline: 2px solid var(--clr-green-600);
  outline-offset: 2px;
}

.radio-group {
  gap: 1rem;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--clr-grey-500);
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: 400;
}

.radio-option:has(input:checked) {
  background-color: var(--clr-green-200);
  border-color: var(--clr-green-600);
}

input[type="radio"],
input[type="checkbox"] {
  accent-color: var(--clr-green-600);
  width: 1.125rem;
  height: 1.125rem;
  cursor: pointer;
}

.checkbox-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  font-weight: 400;
  font-size: 0.9rem;
}

.error {
  color: var(--clr-red);
  font-size: 0.825rem;
  margin-top: 0.4rem;
  min-height: 1em;
}

input.is-invalid,
textarea.is-invalid {
  border-color: var(--clr-red);
}

button[type="submit"] {
  background-color: var(--clr-green-600);
  color: var(--clr-white);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  padding: 1rem;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background-color 0.2s ease;
  margin-top: 0.5rem;
}

button[type="submit"]:hover {
  background-color: var(--clr-green-800);
}

.toast {
  background-color: var(--clr-grey-900);
  color: var(--clr-white);
  padding: 1.25rem 1.5rem;
  border-radius: 0.75rem;
  margin-bottom: 1.5rem;
  border-left: 4px solid var(--clr-green-600);
}

.toast-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.toast-desc {
  font-size: 0.85rem;
  color: var(--clr-green-200);
}

.hidden {
  display: none;
}