/* ============================================================
   ちょいツール / style.css
   共通スタイル。全ページで読み込む。
   ============================================================ */

:root {
  --bg: #F6F5F1;
  --surface: #FFFFFF;
  --surface-hover: #FBFAF7;
  --border: #E3E1D9;
  --text: #21201C;
  --text-muted: #6B6F6C;
  --accent: #B34B3C;
  --accent-dark: #8F3A2E;
  --accent-contrast: #FFFFFF;
  --success: #2F7D5B;
  --danger: #C0392B;
  --focus: #2F5D50;
  --shadow: 0 1px 2px rgba(33, 32, 28, 0.06), 0 4px 12px rgba(33, 32, 28, 0.05);
  --radius-s: 6px;
  --radius-m: 10px;
  --radius-l: 16px;
  --font-body: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", "Meiryo", system-ui, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Courier New", monospace;
}

[data-theme="dark"] {
  --bg: #17181A;
  --surface: #1F2124;
  --surface-hover: #24262A;
  --border: #2C2E31;
  --text: #E7E5E0;
  --text-muted: #9B9C98;
  --accent: #E0836E;
  --accent-dark: #C96A55;
  --accent-contrast: #1B1210;
  --success: #5FBF93;
  --danger: #E07567;
  --focus: #7FB3A2;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  transition: background-color .2s ease, color .2s ease;
}

a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------------- Header ---------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.01em;
}
.brand .mark-choi { color: var(--text); }
.brand .mark-tool { color: var(--accent); }

.header-actions { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-m);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  transition: background-color .15s ease, transform .1s ease;
}
.icon-btn:hover { background: var(--surface-hover); }
.icon-btn:active { transform: scale(0.95); }

.home-link-small {
  font-size: 0.85rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: var(--radius-m);
  background: var(--surface);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.home-link-small:hover { color: var(--text); background: var(--surface-hover); }

/* ---------------- Hero (index) ---------------- */

.hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 20px 8px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  margin: 0 0 8px;
  letter-spacing: 0.01em;
}
.hero p.lead {
  color: var(--text-muted);
  margin: 0 auto 24px;
  max-width: 480px;
  font-size: 0.98rem;
}

.privacy-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--success);
  background: color-mix(in srgb, var(--success) 12%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--success) 30%, var(--border));
  padding: 8px 14px;
  border-radius: 999px;
  margin-bottom: 28px;
}

/* ---------------- Search ---------------- */

.search-wrap { max-width: 480px; margin: 0 auto 32px; position: relative; }
.search-wrap input[type="text"] {
  width: 100%;
  padding: 12px 16px 12px 44px;
  border-radius: var(--radius-l);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.95rem;
}
.search-wrap .search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.95rem;
  pointer-events: none;
}

/* ---------------- Tool grid & cards ---------------- */

.tool-grid {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px 60px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.tool-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: 20px 18px 18px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform .12s ease, border-color .12s ease;
}
.tool-card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.tool-card.is-hidden { display: none; }

.tool-tag {
  position: absolute;
  top: -8px;
  right: 14px;
  background: var(--accent);
  color: var(--accent-contrast);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 3px 7px;
  border-radius: 4px;
  transform: rotate(3deg);
  box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}

.tool-icon { font-size: 1.7rem; line-height: 1; }
.tool-card h3 { margin: 2px 0 0; font-size: 1.05rem; }
.tool-card p { margin: 0; color: var(--text-muted); font-size: 0.88rem; flex-grow: 1; }

.card-bottom { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; }

.fav-btn { background: none; border: none; font-size: 1.15rem; color: var(--border); padding: 4px; line-height: 1; }
.fav-btn.is-fav { color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  border-radius: var(--radius-m);
  padding: 9px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: background-color .15s ease, transform .1s ease;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: var(--accent-contrast); }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--surface-hover); }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }

.no-result { text-align: center; color: var(--text-muted); padding: 40px 0; display: none; }
.no-result.is-visible { display: block; }

/* ---------------- Tool page shell ---------------- */

.page-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 20px 80px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 880px) {
  .page-shell { grid-template-columns: 220px 1fr; align-items: start; }
}

.tool-sidebar { display: flex; flex-direction: column; gap: 4px; }
.tool-sidebar .side-home { font-size: 0.85rem; color: var(--text-muted); padding: 8px 10px; margin-bottom: 6px; }
.tool-sidebar .side-home:hover { color: var(--text); }

.side-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border-radius: var(--radius-m);
  font-size: 0.88rem;
  color: var(--text-muted);
}
.side-link:hover { background: var(--surface-hover); color: var(--text); }
.side-link.is-active {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  font-weight: 700;
}

@media (max-width: 879px) {
  .tool-sidebar { flex-direction: row; overflow-x: auto; padding-bottom: 4px; gap: 8px; }
  .tool-sidebar .side-home { display: none; }
  .side-link { white-space: nowrap; flex-shrink: 0; }
}

.tool-main { min-width: 0; }

.tool-header { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 18px; }
.tool-header .tool-header-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-contrast);
  background: var(--accent);
  padding: 4px 8px;
  border-radius: 5px;
  transform: rotate(-2deg);
  margin-top: 4px;
  flex-shrink: 0;
}
.tool-header h1 { margin: 0 0 4px; font-size: 1.5rem; }
.tool-header p { margin: 0; color: var(--text-muted); font-size: 0.92rem; }

/* ---------------- Tool panel (generic form pieces) ---------------- */

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.panel h2 { font-size: 0.95rem; margin: 0 0 12px; color: var(--text-muted); font-weight: 700; }

.field-label { display: block; font-size: 0.85rem; font-weight: 700; margin-bottom: 6px; color: var(--text); }

textarea, input[type="text"], input[type="time"], input[type="date"], input[type="number"], select {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 11px 12px;
  font-size: 0.94rem;
  font-family: var(--font-body);
  resize: vertical;
}
textarea.mono, .output-box.mono { font-family: var(--font-mono); }
textarea { min-height: 160px; line-height: 1.6; }

.toolbar-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 4px; }

.options-row { display: flex; flex-wrap: wrap; gap: 16px; margin: 12px 0; font-size: 0.88rem; }
.options-row label { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.options-row input[type="checkbox"], .options-row input[type="radio"] { width: auto; accent-color: var(--accent); }

.grid-2 { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 560px) { .grid-2 { grid-template-columns: 1fr 1fr; } }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 640px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

.stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 4px; }
@media (min-width: 560px) { .stat-grid { grid-template-columns: repeat(3, 1fr); } }

.stat-box { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-m); padding: 12px 14px; text-align: center; }
.stat-box .num { font-family: var(--font-mono); font-size: 1.4rem; font-weight: 700; color: var(--accent); display: block; }
.stat-box .label { font-size: 0.76rem; color: var(--text-muted); }

.result-box { background: var(--bg); border: 1px dashed var(--border); border-radius: var(--radius-m); padding: 16px; margin-top: 12px; font-size: 0.95rem; }
.result-box .big { font-family: var(--font-mono); font-size: 1.6rem; font-weight: 700; color: var(--accent); }

.error-msg { color: var(--danger); font-size: 0.85rem; margin-top: 8px; display: none; }
.error-msg.is-visible { display: block; }

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

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translate(-50%, 20px);
  background: var(--text);
  color: var(--bg);
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 0.85rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 50;
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

.qr-result { display: flex; flex-direction: column; align-items: center; gap: 12px; margin-top: 16px; }
.qr-result svg, .qr-result canvas { background: #fff; padding: 12px; border-radius: var(--radius-m); border: 1px solid var(--border); }

.site-footer { text-align: center; padding: 30px 20px 50px; color: var(--text-muted); font-size: 0.8rem; }
.site-footer a { text-decoration: underline; }

/* ---------------- 選択ボタン群(X長文画像メーカー等) ---------------- */

.choice-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.choice-btn {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  padding: 10px 14px;
  border-radius: var(--radius-m);
  font-size: 0.86rem;
  font-weight: 600;
  transition: background-color .12s ease, border-color .12s ease, color .12s ease;
}
.choice-btn:hover { background: var(--surface-hover); }
.choice-btn.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.bg-swatch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  padding: 8px 14px 8px 8px;
  border-radius: var(--radius-m);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text);
}
.bg-swatch .swatch-box {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--border);
  flex-shrink: 0;
}
.bg-swatch.is-active { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 25%, transparent); }

/* ---------------- 画像プレビュー ---------------- */

.preview-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  margin-top: 12px;
}

.preview-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.preview-item canvas {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow);
}

.preview-item .preview-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.warning-box {
  background: color-mix(in srgb, var(--danger) 10%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--danger) 35%, var(--border));
  color: var(--danger);
  border-radius: var(--radius-m);
  padding: 12px 14px;
  font-size: 0.85rem;
  margin-top: 12px;
  display: none;
}
.warning-box.is-visible { display: block; }

.empty-state {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
  padding: 30px 10px;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}