:root {
  --color-bg: #faf7f2;
  --color-surface: #ffffff;
  --color-border: #e3ddd3;
  --color-text: #1f1a14;
  --color-muted: #6b655c;
  --color-primary: #c43a13;
  --color-primary-dark: #9a2d0e;
  --color-success: #1e7d3a;
  --color-fail: #b3261e;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04);
  --radius: 8px;
}

* { box-sizing: border-box; }

/* Author display rules (buttons, flex layouts) must not reveal hidden controls. */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1rem;
  width: 100%;
}

.page-header {
  background: var(--color-primary);
  color: #fff;
  padding: 1.5rem 0;
}
.page-header h1 { margin: 0; font-size: 1.75rem; }
.page-header .subtitle { margin: 0.25rem 0 0; opacity: 0.9; }
.page-header .brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.page-header .brand-logo {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  display: block;
}
.page-header .brand-text { min-width: 0; }

main { flex: 1; padding: 2rem 0; }
main h2 { margin-top: 0; }

form fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem 1.25rem;
  margin: 0 0 1.25rem;
  background: var(--color-surface);
  box-shadow: var(--shadow);
}
form legend {
  padding: 0 0.5rem;
  font-weight: 600;
}
form legend .optional {
  font-weight: 400;
  color: var(--color-muted);
  font-size: 0.875em;
}

label {
  display: block;
  margin: 0.75rem 0 0.25rem;
  font-weight: 500;
  font-size: 0.9375rem;
}

input[type="text"],
input[type="email"],
input[type="number"],
select {
  width: 100%;
  padding: 0.5rem 0.625rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
  background: #fff;
}
input:focus, select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}
select:disabled { background: #f3f0eb; color: var(--color-muted); }

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-top: 0.75rem;
  font-weight: 500;
}
.checkbox-row input { margin-top: 0.2rem; }

.consent p { margin: 0.5rem 0; color: var(--color-muted); font-size: 0.9375rem; }
.consent a { color: var(--color-primary-dark); }

.total-line {
  margin: 1rem 0 0;
  font-size: 1.0625rem;
}
.total-line strong { font-size: 1.125rem; }

button[type="submit"], .button {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 0.875rem 1.5rem;
  font: inherit;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  width: 100%;
  margin-top: 0.5rem;
}
.button { width: auto; }
button[type="submit"]:hover:not(:disabled), .button:hover {
  background: var(--color-primary-dark);
}
button[type="submit"]:disabled {
  background: #c8c0b3;
  cursor: not-allowed;
}

.form-error {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: #fff2f2;
  border: 1px solid #f3b0b0;
  border-radius: var(--radius);
  color: var(--color-fail);
}

.result-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--color-muted);
}
.result-card.result-success { border-top-color: var(--color-success); }
.result-card.result-fail { border-top-color: var(--color-fail); }
.result-card h2 { margin-top: 0; }
.result-tx {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9375rem;
  background: #f3f0eb;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  word-break: break-all;
}
.result-extra { color: var(--color-muted); }
.result-actions { margin-top: 1.5rem; }

.legal-article {
  background: var(--color-surface);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.legal-article ul { padding-left: 1.25rem; }
.legal-article li { margin: 0.25rem 0; }
.legal-back { margin-top: 2rem; }

.legal-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.75rem 0 1.25rem;
  font-size: 0.95rem;
}
.legal-table th,
.legal-table td {
  border: 1px solid var(--color-border);
  padding: 0.5rem 0.75rem;
  text-align: left;
  vertical-align: top;
}
.legal-table th { background: #f6f1e8; font-weight: 600; }

.page-footer {
  background: #1f1a14;
  color: #d8d3c9;
  padding: 1.5rem 0;
  margin-top: 2rem;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-name { margin: 0; font-weight: 600; }
.footer-seat { margin: 0.25rem 0 0; opacity: 0.8; font-size: 0.875rem; }

.footer-simplepay a {
  display: inline-block;
}
.simplepay-logo {
  height: 36px;
  width: auto;
  background: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  display: block;
}