/* 画面の入口。スマホを主に、タブレットと PC でも崩れない形。色は明るい表示と暗い表示の 2 組。 */
:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --ink: #1b1f24;
  --sub: #4b5563;
  --line: #d5d9df;
  --accent: #1d4ed8;
  --accent-ink: #ffffff;
  --warn-bg: #fff4d6;
  --warn-ink: #6b4a00;
  --err: #b42318;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --card: #1c2128;
    --ink: #eef1f5;
    --sub: #b6beca;
    --line: #38404b;
    --accent: #7aa7ff;
    --accent-ink: #0b1220;
    --warn-bg: #3a2f10;
    --warn-ink: #ffdf8a;
    --err: #ff9b8f;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}
[hidden] { display: none !important; }

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px calc(24px + env(safe-area-inset-bottom));
}

#bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: calc(12px + env(safe-area-inset-top)) 0 12px;
}
#bar h1 { margin: 0; font-size: 20px; font-weight: 700; }

h2 { margin: 0 0 8px; font-size: 18px; }
.lead { margin: 8px 0 12px; color: var(--sub); font-size: 15px; }

.card-box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

form { display: flex; flex-direction: column; gap: 10px; margin: 0 0 12px; }
input {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
}
button {
  min-height: 48px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 600;
  border-radius: 10px;
  border: 1px solid var(--line);
  cursor: pointer;
}
button:disabled { opacity: 0.55; cursor: default; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button.ghost { background: transparent; color: var(--ink); }
input:focus-visible, button:focus-visible, .tile:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.msg { margin: 12px 0 0; overflow-wrap: anywhere; }
.msg.error { color: var(--err); font-weight: 600; }

.tiles { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 700px) { .tiles { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1100px) { .tiles { grid-template-columns: 1fr 1fr 1fr; } }

.tile {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  min-height: 84px;
  padding: 14px 16px;
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--line);
  border-left: 6px solid var(--accent);
  border-radius: 12px;
  text-decoration: none;
  overflow-wrap: anywhere;
}
.tile-name { font-size: 20px; font-weight: 700; }
.tile-note { font-size: 14px; color: var(--sub); }
.tile.unknown { border-left-color: var(--warn-ink); }
.tile-warn {
  margin-top: 6px;
  padding: 4px 8px;
  font-size: 13px;
  color: var(--warn-ink);
  background: var(--warn-bg);
  border-radius: 6px;
}

.empty { color: var(--sub); }
.note {
  margin-top: 16px;
  padding: 12px 16px;
  color: var(--warn-ink);
  background: var(--warn-bg);
  border-radius: 12px;
}
.note p { margin: 0 0 8px; }

.loading {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--bg) 70%, transparent);
}
.loading span {
  padding: 10px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
}