:root {
  --sir-navy: #1a365d;
  --sir-navy-dark: #12294a;
  --sir-accent: #ffc107;
  --sir-bg: #eef2f7;
  --sir-text: #23324a;
  --sir-err: #c0392b;

  /* SurveyJS v2 theme variables — brand the rendered survey */
  --sjs-primary-backcolor: #1a365d;
  --sjs-primary-backcolor-light: rgba(26, 54, 93, 0.1);
  --sjs-primary-backcolor-dark: #12294a;
  --sjs-primary-forecolor: #ffffff;
  --sjs-general-backcolor: #ffffff;
  --sjs-general-backcolor-dim: #eef2f7;
  --sjs-corner-radius: 8px;
  --sjs-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--sir-bg);
  color: var(--sir-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

.sir-header {
  background: var(--sir-navy);
  color: #fff;
  padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  position: sticky; top: 0; z-index: 10;
}
.sir-brand { display: flex; flex-direction: column; }
.sir-logo { font-weight: 700; font-size: 18px; letter-spacing: 0.3px; }
.sir-tagline { font-size: 13px; color: #b9c7dc; margin-top: 1px; }
.sir-save {
  background: rgba(255, 255, 255, 0.15);
  color: #d7ffd9;
  border: 1px solid rgba(215, 255, 217, 0.4);
  padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 600;
}
.sir-save::before { content: "\2713\00a0"; }

.sir-main {
  max-width: 820px;
  margin: 0 auto;
  padding: 28px 16px 48px;
}

.sir-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(26, 54, 93, 0.08);
  padding: 32px 28px;
  max-width: 460px;
  margin: 24px auto;
}
.sir-card h1 { font-size: 22px; margin: 0 0 8px; color: var(--sir-navy); }
.sir-sub { color: #5a6b85; font-size: 14px; margin: 0 0 22px; }

.sir-card label {
  display: block;
  font-size: 13px; font-weight: 600; color: #40506b;
  margin-bottom: 16px;
}
.sir-card label .opt { font-weight: 400; color: #90a0b8; }
.sir-card input {
  display: block; width: 100%;
  margin-top: 6px; padding: 12px 14px;
  border: 1.5px solid #cdd7e5; border-radius: 8px;
  font-size: 16px; color: var(--sir-text);
  transition: border-color 0.15s;
}
.sir-card input:focus { outline: none; border-color: var(--sir-navy); box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.12); }
#codeInput { letter-spacing: 8px; font-size: 24px; text-align: center; font-weight: 700; }

.sir-btn {
  display: block; width: 100%;
  background: var(--sir-navy); color: #fff;
  border: none; border-radius: 8px;
  padding: 13px 18px; font-size: 16px; font-weight: 600;
  cursor: pointer; transition: background 0.15s;
  margin-top: 4px;
}
.sir-btn:hover { background: var(--sir-navy-dark); }
.sir-btn:disabled { opacity: 0.6; cursor: default; }
.sir-linkbtn {
  display: block; width: 100%;
  background: none; border: none; color: #5a6b85;
  padding: 12px; font-size: 13px; cursor: pointer; margin-top: 8px;
  text-decoration: underline;
}
.sir-err { color: var(--sir-err); font-size: 13px; margin: 14px 0 0; font-weight: 500; }

.sir-loading { text-align: center; }
.sir-spinner {
  width: 34px; height: 34px; margin: 6px auto 14px;
  border: 3px solid #dce4ef; border-top-color: var(--sir-navy);
  border-radius: 50%; animation: sir-spin 0.8s linear infinite;
}
@keyframes sir-spin { to { transform: rotate(360deg); } }

#surveyWrap { margin-top: 4px; }
.sir-thanks { text-align: center; padding: 20px; }
.sir-thanks h1 { color: var(--sir-navy); }

.sir-footer {
  max-width: 820px; margin: 0 auto; padding: 20px 16px 40px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  color: #8494ac; font-size: 12px;
}
.sir-secure::before { content: "\1f512\00a0"; }

@media (max-width: 520px) {
  .sir-card { padding: 24px 18px; margin: 12px auto; }
  .sir-logo { font-size: 16px; }
}