/* ==========================================================================
   投稿フォームページ
   ========================================================================== */
.post-form-page { padding: 150px 0 120px; }
.post-form-container { max-width: 760px; }

.post-form-head { text-align: center; margin-bottom: 40px; }
.post-form-head .eyebrow { justify-content: center; }
.post-form-head .serif-title { font-size: clamp(26px, 4vw, 36px); margin-bottom: 12px; }
.post-form-sub { color: var(--text-muted); font-size: 14.5px; }

.post-form-error {
  background: #fff0f0;
  border: 1px solid #ffb3b3;
  color: #b3261e;
  padding: 12px 18px;
  border-radius: 4px 14px 4px 14px;
  font-size: 13.5px;
  margin-bottom: 24px;
}

.post-form-section {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px 24px 6px 24px;
  padding: 32px;
  margin-bottom: 24px;
}
.post-form-section-title {
  font-family: "Shippori Mincho", serif;
  font-size: 18px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.post-form-label { display: block; font-size: 13px; font-weight: 700; color: var(--text-muted); margin: 18px 0 8px; }
.post-form-label:first-of-type { margin-top: 0; }
.required { color: var(--magenta); font-size: 11px; margin-left: 4px; }

.post-form-input, .post-form-textarea, .post-form-file {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 4px 12px 4px 12px;
  padding: 11px 14px;
  font-family: inherit;
  font-size: 13.5px;
  color: var(--text);
  background: var(--surface-alt);
}
.post-form-input:focus, .post-form-textarea:focus { outline: none; border-color: var(--violet); background: #fff; }
.post-form-textarea { resize: vertical; }
.post-form-file { background: #fff; padding: 9px 12px; }
.post-form-hint { font-size: 12.5px; color: var(--text-faint); margin-bottom: 20px; }

.post-form-checkbox-group { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }
.post-form-checkbox {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}
.post-form-checkbox:has(input:checked) { border-color: var(--violet); color: var(--violet); background: var(--grad-soft); font-weight: 600; }
.post-form-checkbox input { accent-color: var(--violet); }

.part-picker-list { display: flex; flex-direction: column; gap: 18px; }
.part-picker-row { padding: 18px; background: var(--surface-alt); border: 1px solid var(--border); border-radius: 4px 16px 4px 16px; }
.part-picker-label { font-family: "Shippori Mincho", serif; font-size: 14.5px; margin-bottom: 12px; }

.part-picker-fields { display: grid; grid-template-columns: 1fr 110px 150px; gap: 10px; align-items: start; }
.part-picker-search { position: relative; }

.part-suggestions {
  display: none;
  position: absolute;
  top: 100%; left: 0; right: 0;
  z-index: 20;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px 12px 4px 12px;
  margin-top: 4px;
  max-height: 220px;
  overflow-y: auto;
  box-shadow: 0 16px 32px -18px rgba(0, 0, 0, .25);
}
.part-suggestions.is-open { display: block; }
.part-suggestion-item {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 10px 14px;
  font-size: 13px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
}
.part-suggestion-item:last-child { border-bottom: none; }
.part-suggestion-item:hover { background: var(--grad-soft); }

.part-new-toggle {
  display: inline-block;
  margin-top: 12px;
  background: none;
  border: none;
  color: var(--violet);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
}
.part-new-toggle:hover { color: var(--magenta); }

.part-new-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.part-new-fields[hidden] { display: none; }

.post-form-submit { text-align: center; margin-top: 32px; }

@media (max-width: 640px) {
  .part-picker-fields { grid-template-columns: 1fr; }
  .part-new-fields { grid-template-columns: 1fr; }
}