:root {
  --bg: #f7f3ed;
  --bg-accent: #e8f0ef;
  --surface: #ffffff;
  --ink: #1f1a16;
  --muted: #5d5a58;
  --accent: #0f5d5e;
  --accent-2: #d95f02;
  --border: #d9d2c7;
  --shadow: rgba(0, 0, 0, 0.08);
  --radius: 14px;
  --font-scale: 1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans JP", "Noto Sans JP", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top left, #fff7ea, var(--bg)) no-repeat,
    linear-gradient(135deg, rgba(15, 93, 94, 0.08), transparent 60%);
  font-size: calc(16px * var(--font-scale));
  min-height: 100vh;
}

body.high-contrast {
  --bg: #ffffff;
  --surface: #ffffff;
  --ink: #000000;
  --muted: #1a1a1a;
  --accent: #0b3a3a;
  --accent-2: #9a1f00;
  --border: #000000;
  background: #ffffff;
}

body.reduce-motion * {
  animation: none !important;
  transition: none !important;
}

a {
  color: var(--accent);
}

header {
  padding: 24px clamp(20px, 3vw, 40px);
}

header h1 {
  margin: 0;
  font-size: calc(26px * var(--font-scale));
  font-family: "IBM Plex Serif", "Noto Serif JP", serif;
  letter-spacing: 0.02em;
}

header p {
  margin: 8px 0 0;
  color: var(--muted);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

nav a {
  padding: 8px 14px;
  background: var(--surface);
  border-radius: 999px;
  border: 1px solid var(--border);
  text-decoration: none;
  font-weight: 600;
  color: var(--ink);
  box-shadow: 0 4px 10px var(--shadow);
}

nav a.active {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

main {
  padding: 0 clamp(20px, 3vw, 40px) 40px;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

@media (min-width: 900px) {
  .viz-grid {
    grid-template-columns: minmax(200px, 0.6fr) minmax(620px, 3.4fr);
    align-items: start;
  }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 6px 20px var(--shadow);
}

.card h2 {
  margin-top: 0;
  font-size: calc(20px * var(--font-scale));
  font-family: "IBM Plex Serif", "Noto Serif JP", serif;
}

label {
  font-weight: 600;
}

input,
select,
textarea,
button {
  font: inherit;
}

input[type="text"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
}

button {
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

button.secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--border);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[role="button"]:focus-visible {
  outline: 3px solid #ffbf47;
  outline-offset: 2px;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 12px var(--shadow);
}

.list {
  display: grid;
  gap: 10px;
}

.person-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.person-row input[type="text"] {
  margin-bottom: 6px;
}

.row-actions {
  display: flex;
  gap: 6px;
}

.question-list {
  display: grid;
  gap: 12px;
  max-height: 520px;
  overflow: auto;
  padding-right: 6px;
}

.question-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  background: var(--bg-accent);
}

.question-item h4 {
  margin: 0 0 8px;
  font-size: calc(15px * var(--font-scale));
}

.radio-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.radio-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.small {
  font-size: 0.9em;
  color: var(--muted);
}

.canvas-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  padding: 10px;
}

canvas {
  width: 100%;
  height: clamp(360px, 60vh, 640px);
  display: block;
}

@media (min-width: 900px) {
  .viz-grid canvas {
    height: clamp(460px, 72vh, 820px);
  }
}

.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95em;
}

table th,
table td {
  border: 1px solid var(--border);
  padding: 6px 8px;
  text-align: left;
}

table th {
  background: var(--bg-accent);
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 0.8em;
}

.notice {
  padding: 8px 10px;
  border-radius: 8px;
  background: #fff6d6;
  border: 1px solid #f1d18b;
}

.footer {
  padding: 16px 0;
  color: var(--muted);
  font-size: 0.85em;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 720px) {
  canvas {
    height: 320px;
  }

  nav {
    gap: 8px;
  }
}