/* QRコードメーカーの見た目。wakame.dev 本体と同じ配色を使う */

:root {
  --bg: #f5f8f6;
  --surface: #ffffff;
  --surface-2: #e9f2ec;
  --border: #d9e7df;
  --border-strong: #bfd5c8;
  --text: #17241d;
  --muted: #556b60;
  --primary: #18794e;
  --primary-hover: #13633f;
  --primary-ink: #ffffff;
  --accent: #b45309;
  --ring: rgba(24, 121, 78, 0.38);
  --shadow: 0 6px 16px rgba(20, 50, 35, 0.09), 0 2px 6px rgba(20, 50, 35, 0.06);
  --radius: 14px;
  --font: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans",
    "BIZ UDPGothic", Meiryo, system-ui, -apple-system, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1713;
    --surface: #14211b;
    --surface-2: #1a2a22;
    --border: #2a3d33;
    --border-strong: #3a5145;
    --text: #e6f0ea;
    --muted: #9db4a8;
    --primary: #5fd39a;
    --primary-hover: #7de0af;
    --primary-ink: #08150f;
    --accent: #f59e0b;
    --ring: rgba(95, 211, 154, 0.45);
    --shadow: 0 8px 20px rgba(0, 0, 0, 0.38);
  }
}

:root[data-theme="dark"] {
  --bg: #0d1713;
  --surface: #14211b;
  --surface-2: #1a2a22;
  --border: #2a3d33;
  --border-strong: #3a5145;
  --text: #e6f0ea;
  --muted: #9db4a8;
  --primary: #5fd39a;
  --primary-hover: #7de0af;
  --primary-ink: #08150f;
  --accent: #f59e0b;
  --ring: rgba(95, 211, 154, 0.45);
  --shadow: 0 8px 20px rgba(0, 0, 0, 0.38);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
}

:focus-visible { outline: 3px solid var(--ring); outline-offset: 2px; border-radius: 4px; }

.skip-link {
  position: absolute; left: 50%; top: 8px; transform: translate(-50%, -200%);
  z-index: 10; background: var(--primary); color: var(--primary-ink);
  padding: 10px 18px; border-radius: 999px; text-decoration: none; font-weight: 700;
}
.skip-link:focus { transform: translate(-50%, 0); }

.site-header {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  max-width: 900px; margin-inline: auto; padding: 10px 20px;
}

.home {
  display: inline-flex; align-items: center; min-height: 44px;
  color: var(--muted); text-decoration: none; font-weight: 700; font-size: 0.9rem;
}
.home:hover { color: var(--primary); }

.theme-toggle {
  width: 44px; height: 44px; flex: none; display: grid; place-items: center;
  background: transparent; border: 1px solid var(--border); border-radius: 999px;
  color: var(--muted); cursor: pointer;
}
.theme-toggle:hover { color: var(--primary); border-color: var(--primary); }
.theme-toggle svg { width: 19px; height: 19px; }
.theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: block; }

main { max-width: 900px; margin-inline: auto; padding: 8px 20px 56px; }

h1 { font-size: 1.8rem; letter-spacing: 0.02em; margin: 12px 0 0; }
.lead { color: var(--muted); font-size: 0.95rem; margin: 12px 0 0; }

.panel {
  margin-top: 24px; padding: 20px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
}

.row { display: grid; gap: 18px; }
@media (min-width: 720px) { .row { grid-template-columns: 1fr 1fr; gap: 22px; } }

.field + .field, .field + .row, .row + .field { margin-top: 18px; }
.field label { display: block; font-size: 0.88rem; font-weight: 700; margin-bottom: 6px; }
.value { color: var(--muted); font-weight: 400; }

textarea, select {
  width: 100%; padding: 12px; font: inherit; font-size: 1rem; color: var(--text);
  background: var(--bg); border: 1px solid var(--border-strong); border-radius: 10px;
}
textarea { resize: vertical; min-height: 88px; word-break: break-all; }

input[type="range"] { width: 100%; accent-color: var(--primary); min-height: 32px; }

.check {
  display: flex; align-items: center; gap: 8px; min-height: 44px;
  font-size: 0.86rem; font-weight: 400; color: var(--muted); margin-top: 6px;
}
.check input { width: 18px; height: 18px; accent-color: var(--primary); }

.hint { margin: 6px 0 0; font-size: 0.8rem; color: var(--muted); }

.error {
  margin: 16px 0 0; padding: 12px 14px; font-size: 0.88rem;
  color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--surface)); border-radius: 10px;
}

.result { margin-top: 24px; display: grid; gap: 20px; align-items: start; }
@media (min-width: 720px) { .result { grid-template-columns: minmax(0, 1fr) 260px; } }

.preview {
  display: grid; place-items: center; padding: 20px; background: #ffffff;
  border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
}
.preview canvas { width: 100%; max-width: 420px; height: auto; image-rendering: pixelated; }

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

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 18px; font: inherit; font-size: 0.92rem; font-weight: 700;
  color: var(--text); background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: 999px; cursor: pointer;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn--primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn--primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); color: var(--primary-ink); }
.btn:active { transform: scale(0.98); }
.btn[disabled] { opacity: 0.55; cursor: default; }

.meta { margin: 4px 0 0; font-size: 0.8rem; color: var(--muted); }

.notes { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); }
.notes h2 { font-size: 1.1rem; }
.notes ul { margin: 12px 0 0; padding-left: 1.2em; }
.notes li { font-size: 0.88rem; color: var(--muted); margin-top: 6px; }
.notes strong { color: var(--text); }

.site-footer {
  max-width: 900px; margin-inline: auto; padding: 0 20px 32px;
  font-size: 0.8rem; color: var(--muted);
}
.site-footer a { color: var(--primary); }

/* 生成が速すぎて画面の変化に気づけないので、短い通知を出す */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 20;
  margin: 0;
  padding: 12px 20px;
  max-width: calc(100vw - 32px);
  background: var(--text);
  color: var(--bg);
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 700;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translate(-50%, 12px);
  transition: opacity 200ms ease, transform 200ms ease;
  pointer-events: none;
}

.toast.is-shown {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .toast { transition: none; }
}