:root {
  color-scheme: light;
  --blue-900: #063b73;
  --blue-700: #005aa9;
  --blue-500: #1186c9;
  --green-600: #2f8f46;
  --green-400: #67b84f;
  --bg: #eef5fb;
  --surface: #ffffff;
  --surface-soft: #f6fbff;
  --text: #123250;
  --muted: #526a7e;
  --border: #c7dced;
  --shadow: 0 20px 55px rgba(0, 64, 120, 0.16);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #071725;
  --surface: #0d2437;
  --surface-soft: #102d44;
  --text: #eef7ff;
  --muted: #bad0e2;
  --border: #28506d;
  --shadow: 0 20px 55px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(17, 134, 201, 0.14), transparent 36%),
    radial-gradient(circle at bottom right, rgba(103, 184, 79, 0.14), transparent 34%),
    var(--bg);
  color: var(--text);
}

button, a { font: inherit; }

a { color: inherit; }

.theme-toggle {
  position: fixed;
  z-index: 10;
  top: 18px;
  right: 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 999px;
  padding: 9px 13px;
  color: #fff;
  background: rgba(2, 69, 129, .86);
  box-shadow: 0 8px 25px rgba(0, 55, 105, .2);
  cursor: pointer;
}

.page-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.menu-page {
  position: relative;
  width: min(980px, 100%);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 26px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 72px 58px 64px;
}

.brand-band,
.footer-band {
  position: absolute;
  left: 0;
  right: 0;
  height: 18px;
  background: linear-gradient(90deg, var(--blue-900), var(--blue-500) 62%, var(--green-400));
}

.brand-band { top: 0; }
.footer-band { bottom: 0; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  text-align: left;
}

.jcs-logo {
  width: 105px;
  height: auto;
  object-fit: contain;
}

h1 {
  margin: 0;
  color: var(--blue-900);
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.04;
}

:root[data-theme="dark"] h1 { color: #8fcaff; }

.subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.accent-line {
  width: min(520px, 80%);
  height: 4px;
  margin: 30px auto 38px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue-700), var(--green-400));
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.survey-option {
  display: flex;
  min-height: 280px;
  flex-direction: column;
  justify-content: center;
  border: 2px solid var(--border);
  border-radius: 22px;
  padding: 34px;
  text-decoration: none;
  background: linear-gradient(145deg, var(--surface-soft), var(--surface));
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.survey-option:hover,
.survey-option:focus-visible {
  transform: translateY(-5px);
  border-color: var(--blue-500);
  box-shadow: 0 16px 35px rgba(0, 90, 169, .16);
  outline: none;
}

.survey-option:nth-child(2):hover,
.survey-option:nth-child(2):focus-visible { border-color: var(--green-600); }

.option-kicker {
  color: var(--green-600);
  font-size: .83rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.survey-option h2 {
  margin: 12px 0 18px;
  color: var(--blue-900);
  font-size: clamp(1.65rem, 3vw, 2.25rem);
}

:root[data-theme="dark"] .survey-option h2 { color: #8fcaff; }

.survey-option p {
  margin: 5px 0;
  color: var(--muted);
  line-height: 1.55;
}

.open-label {
  margin-top: 24px;
  color: var(--blue-700);
  font-weight: 700;
}

:root[data-theme="dark"] .open-label { color: #6cc0ff; }

.help-text {
  margin: 34px 0 0;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 720px) {
  .page-shell { padding: 14px; }
  .menu-page { padding: 66px 22px 54px; border-radius: 20px; }
  .site-header { flex-direction: column; text-align: center; gap: 14px; }
  .jcs-logo { width: 88px; }
  .menu-grid { grid-template-columns: 1fr; }
  .survey-option { min-height: 230px; padding: 28px; }
  .theme-label { display: none; }
}