* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #fdf6f9;
  --panel: #ffffff;
  --panel-accent: #fff0f6;
  --ink: #4a3b42;
  --sub: #9b7f8c;
  --accent: #ff7fae;
  --accent-dark: #e05a8f;
  --line: #f0dde6;
}

/* UIのダークテーマ(生成画像には影響しない)。手動指定 > OS設定 の優先順 */
:root[data-theme="dark"] {
  --bg: #1b1620;
  --panel: #2a2230;
  --panel-accent: #42303c;
  --ink: #f2e9f0;
  --sub: #b79dab;
  --accent: #ff7fae;
  --accent-dark: #ff9cc4;
  --line: #4a3a48;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1b1620;
    --panel: #2a2230;
    --panel-accent: #42303c;
    --ink: #f2e9f0;
    --sub: #b79dab;
    --accent: #ff7fae;
    --accent-dark: #ff9cc4;
    --line: #4a3a48;
  }
}

body {
  font-family: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

.site-header {
  padding: 28px 24px 12px;
  text-align: center;
  position: relative;
}
.theme-toggle {
  position: absolute;
  top: 14px;
  right: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--sub);
  cursor: pointer;
}
.theme-toggle:hover { border-color: var(--sub); }
.site-header h1 {
  font-size: 2rem;
  font-weight: 900;
  color: var(--accent-dark);
  letter-spacing: 0.05em;
}
.beta {
  font-size: 0.8rem;
  vertical-align: super;
  color: var(--sub);
  margin-left: 4px;
}
.tagline { color: var(--sub); font-size: 0.9rem; }

.layout {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 20px;
  max-width: 1280px;
  margin: 16px auto;
  padding: 0 16px;
}
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .preview { order: -1; }
}

fieldset {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  margin-bottom: 14px;
}
legend {
  font-weight: 700;
  color: var(--accent-dark);
  padding: 0 6px;
  font-size: 0.95rem;
}

label { display: block; font-size: 0.85rem; margin: 8px 0; }
input[type="text"], select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  background: var(--panel);
  color: var(--ink);
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.template-picker { display: flex; gap: 10px; flex-wrap: wrap; }
.template-chip {
  border: 2px solid transparent;
  border-radius: 10px;
  padding: 6px 12px 4px;
  cursor: pointer;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  background: var(--panel);
  color: var(--ink);
  font-family: inherit;
}
.template-chip .swatch {
  display: block;
  width: 64px;
  height: 36px;
  border-radius: 6px;
  margin-bottom: 4px;
}
.template-chip.selected { border-color: var(--accent-dark); background: var(--panel-accent); }
.pro-tag {
  display: inline-block;
  background: #f4b942;
  color: #5a4300;
  border-radius: 6px;
  font-size: 0.62rem;
  font-weight: 900;
  padding: 0 5px;
  margin-left: 4px;
  vertical-align: 1px;
}
.license-status { font-size: 0.8rem; margin-left: 8px; }
.license-status.ok { color: #1d9c76; font-weight: 700; }
.license-status.ng { color: #d43f3f; }

/* 頒布物の入力行 */
.item-row {
  display: grid;
  grid-template-columns: 40px 1fr 72px 62px 48px 24px;
  gap: 6px;
  align-items: center;
  margin-bottom: 8px;
}
.item-thumb {
  width: 40px;
  height: 40px;
  border: 1px dashed var(--sub);
  border-radius: 8px;
  cursor: pointer;
  background-color: var(--panel);
  background-size: cover;
  background-position: center;
  margin: 0;
  position: relative;
}
.item-thumb::after {
  content: "+";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--sub);
  font-weight: 700;
}
.item-thumb.has-image { border-style: solid; border-color: var(--accent); }
.item-thumb.has-image::after { content: ""; }
.item-thumb input { display: none; }
.item-row input[type="text"], .item-row select { padding: 6px 8px; font-size: 0.85rem; }
.item-r18 {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: 0.75rem;
  margin: 0;
  color: var(--sub);
}
.item-r18 input { accent-color: #d43f3f; }
.item-del {
  background: none;
  border: none;
  color: var(--sub);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}
.item-del:hover { color: #d43f3f; }

.check-label { display: flex; align-items: center; gap: 6px; }

.btn-main {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 12px 22px;
  font-size: 1rem;
  font-weight: 900;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.05s, background 0.15s;
}
.btn-main:hover { background: var(--accent-dark); }
.btn-main:active { transform: scale(0.97); }
.btn-alt { background: #7fb8ff; }
.btn-alt:hover { background: #5a93e0; }
.btn-sub {
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 12px;
  font-family: inherit;
  font-size: 0.8rem;
  color: var(--sub);
  cursor: pointer;
  margin-top: 6px;
}
.btn-sub:hover { border-color: var(--sub); }
.btn-sub:disabled { opacity: 0.4; cursor: default; }

.preview { position: sticky; top: 12px; align-self: start; }
.mode-tabs { display: flex; gap: 8px; margin-bottom: 10px; align-items: center; }
.tabs-label { font-size: 0.8rem; color: var(--sub); font-weight: 700; }
.mode-tab {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--sub);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 16px;
  cursor: pointer;
}
.mode-tab.selected {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
#canvas {
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: 0 6px 24px rgba(180, 120, 150, 0.25);
  background: var(--panel);
}
#canvas.tall {
  width: auto;
  max-width: 100%;
  max-height: 78vh;
  margin: 0 auto;
  display: block;
}
.actions { display: flex; gap: 10px; margin: 12px 0; }
.tweet-details {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px;
}
.tweet-details summary {
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--sub);
}
.tweet-details pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: inherit;
  font-size: 0.85rem;
  color: var(--ink);
  margin-top: 8px;
}
.note { font-size: 0.75rem; color: var(--sub); margin-top: 4px; }

.site-footer {
  text-align: center;
  color: var(--sub);
  font-size: 0.75rem;
  padding: 24px;
}
.site-footer a { color: var(--accent-dark); }