:root {
  color-scheme: light;
  --bg: #f5f1e8;
  --panel: #fffaf1;
  --text: #1f2424;
  --muted: #5e665f;
  --line: #d8cfc0;
  --accent: #18615b;
  --accent-strong: #104743;
  --danger: #a23a2f;
  --success: #176a3a;
  --focus: #d6a84f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  background:
    linear-gradient(rgba(245, 241, 232, 0.86), rgba(245, 241, 232, 0.94)),
    url("https://images.unsplash.com/photo-1510915361894-db8b60106cb1?auto=format&fit=crop&w=1600&q=80");
  background-size: cover;
  background-position: center;
  color: var(--text);
}

button,
input,
textarea {
  font: inherit;
}

.page-shell {
  width: min(100%, 960px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 32px 18px;
  display: flex;
  align-items: center;
}

.form-panel {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(31, 36, 36, 0.16);
  padding: clamp(22px, 4vw, 44px);
}

.brand-block {
  max-width: 680px;
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1;
}

.intro {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.5;
}

.signup-form {
  display: grid;
  gap: 18px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

label,
fieldset {
  display: grid;
  gap: 8px;
}

span,
legend {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--text);
  padding: 12px 13px;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: var(--focus);
  outline: 3px solid rgba(214, 168, 79, 0.28);
}

fieldset {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.checkbox-grid label {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  color: var(--muted);
  font-weight: 600;
}

.checkbox-grid input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.submit-button {
  min-height: 52px;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #ffffff;
  cursor: pointer;
  font-weight: 800;
}

.submit-button:hover,
.submit-button:focus {
  background: var(--accent-strong);
}

.submit-button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.message {
  min-height: 22px;
  color: var(--muted);
  font-weight: 700;
}

.message.error {
  color: var(--danger);
}

.message.success {
  color: var(--success);
}

.hidden-field {
  position: absolute;
  left: -9999px;
}

@media (max-width: 700px) {
  .page-shell {
    padding: 16px;
    align-items: flex-start;
  }

  .field-grid,
  .checkbox-grid {
    grid-template-columns: 1fr;
  }
}