:root {
  color-scheme: light;
  --page-bg: radial-gradient(circle at top, #fef1da 0%, #f8dcc7 36%, #f3f5ef 100%);
  --card-bg: rgba(255, 252, 248, 0.9);
  --text: #2f241c;
  --muted: #715d4d;
  --line: rgba(80, 46, 20, 0.14);
  --accent: #bf5c2d;
  --accent-dark: #7d3619;
  --danger: #b42318;
  --success: #0f766e;
  --shadow: 0 18px 48px rgba(76, 36, 20, 0.12);
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  min-height: 100vh;
  font-family: "Segoe UI", sans-serif;
  background: var(--page-bg);
  color: var(--text);
}

.page-shell {
  min-height: 100vh;
  padding: 24px 16px 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card {
  width: min(100%, 480px);
  padding: 24px;
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.intro {
  margin-bottom: 24px;
}

h1 {
  margin: 0;
  font-size: 2rem;
  line-height: 1.05;
}

.lead {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

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

.field-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  font-size: 0.95rem;
  font-weight: 600;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px 16px;
  font: inherit;
  color: var(--text);
  background: rgba(255, 255, 255, 0.92);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: rgba(191, 92, 45, 0.72);
  box-shadow: 0 0 0 4px rgba(191, 92, 45, 0.12);
}

.field input[data-invalid="true"],
.field textarea[data-invalid="true"] {
  border-color: rgba(180, 35, 24, 0.75);
  box-shadow: 0 0 0 4px rgba(180, 35, 24, 0.08);
}

.field textarea {
  resize: vertical;
  min-height: 160px;
}

.field-hint {
  color: var(--muted);
  font-size: 0.85rem;
}

.field-error {
  min-height: 1.1em;
  color: var(--danger);
  font-size: 0.84rem;
}

.form-note {
  margin: -4px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.form-status {
  min-height: 1.4em;
  font-size: 0.94rem;
}

.form-status[data-state="success"] {
  color: var(--success);
}

.form-status[data-state="error"] {
  color: var(--danger);
}

.form-status[data-state="loading"] {
  color: var(--accent-dark);
}

.submit-button {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 15px 20px;
  font: inherit;
  font-weight: 700;
  color: #fff8f3;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  box-shadow: 0 14px 30px rgba(125, 54, 25, 0.22);
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.submit-button:hover {
  transform: translateY(-1px);
}

.submit-button:disabled {
  opacity: 0.7;
  cursor: wait;
  transform: none;
}

@media (min-width: 640px) {
  .page-shell {
    padding: 40px 20px 56px;
  }

  .card {
    padding: 32px;
  }

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

  .field-message {
    grid-column: 1 / -1;
  }
}