/* ===================================================
   NanobananaPro2 — Result Display, History, Lightbox
   =================================================== */

/* ─── Result States ─── */
.result-empty, .result-loading, .result-error {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 12px; padding: 40px; text-align: center;
}
.result-empty h3, .result-loading h3, .result-error h3 {
  font-size: 1.1rem; font-weight: 700; color: var(--surface-800);
}
.result-empty p, .result-loading p, .result-error p {
  font-size: .85rem; color: var(--surface-500); line-height: 1.7;
}
.empty-illustration { animation: float 4s ease-in-out infinite; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ─── Loading Spinner ─── */
.loading-spinner { position: relative; width: 80px; height: 80px; margin-bottom: 12px; }
.spinner-ring {
  position: absolute; inset: 0;
  border: 3px solid var(--surface-200); border-top-color: var(--banana-400);
  border-radius: 50%; animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.spinner-banana {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%); font-size: 1.8rem;
  animation: bananaWiggle 2s ease-in-out infinite;
}
@keyframes bananaWiggle {
  0%, 100% { transform: translate(-50%,-50%) rotate(0); }
  25% { transform: translate(-50%,-50%) rotate(15deg); }
  75% { transform: translate(-50%,-50%) rotate(-15deg); }
}
.loading-progress {
  width: 240px; display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.progress-bar {
  width: 100%; height: 4px; background: var(--surface-200);
  border-radius: var(--radius-full); overflow: hidden;
}
.progress-fill {
  height: 100%; width: 0%; background: var(--gradient-banana);
  border-radius: var(--radius-full); transition: width 1s ease;
}
.progress-time { font-size: .7rem; color: var(--surface-500); }

/* ─── Error ─── */
#errorMessage {
  background: rgba(255,86,48,.08); border: 1px solid rgba(255,86,48,.2);
  border-radius: var(--radius-md); padding: 12px;
  font-size: .8rem; color: #FF5630;
  max-width: 400px; word-break: break-all;
}

/* ─── Single Result ─── */
.result-display {
  flex: 1; display: flex; flex-direction: column;
  padding: 16px; gap: 12px; min-height: 300px;
}
.result-image-container {
  position: relative; flex: 1; display: flex;
  align-items: center; justify-content: center;
  background: var(--surface-100); border-radius: var(--radius-lg);
  overflow: hidden; min-height: 200px;
}
.result-image {
  max-width: 100%; max-height: 100%; object-fit: contain;
  border-radius: var(--radius-md); animation: resultReveal .4s ease;
}
@keyframes resultReveal {
  from { opacity:0; transform:scale(.95); filter:blur(10px); }
  to   { opacity:1; transform:scale(1);   filter:blur(0); }
}
.result-actions {
  position: absolute; top: 12px; right: 12px;
  display: flex; gap: 8px; opacity: 0; transition: opacity var(--tr-fast);
}
.result-image-container:hover .result-actions { opacity: 1; }
.btn-action {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.7); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius-md);
  color: var(--surface-900); cursor: pointer;
  transition: all var(--tr-fast); font-size: 1rem;
}
.btn-action:hover { background: rgba(0,0,0,.85); border-color: var(--banana-400); }
.result-meta { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.meta-item {
  display: flex; flex-direction: column; gap: 2px;
  padding: 8px 12px; background: var(--surface-100);
  border-radius: var(--radius-md); border: 1px solid var(--surface-200);
}
.meta-value { font-size: .82rem; font-weight: 700; color: var(--surface-900); }

/* ─── Variation Grid ─── */
.result-variation { flex: 1; display: flex; flex-direction: column; padding: 16px; gap: 10px; }
.variation-grid {
  display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr;
  gap: 8px; flex: 1;
}
.variation-cell {
  position: relative; background: var(--surface-100);
  border-radius: var(--radius-md); border: 1px solid var(--surface-200);
  overflow: hidden; cursor: pointer; transition: all var(--tr-fast);
  display: flex; align-items: center; justify-content: center;
}
.variation-cell:hover { border-color: var(--banana-400); box-shadow: var(--shadow-glow); }
.variation-cell img { width: 100%; height: 100%; object-fit: contain; animation: resultReveal .4s ease; }
.variation-cell .var-placeholder { font-size: 2rem; color: var(--surface-400); animation: spin 2s linear infinite; }
.variation-cell.loading .var-placeholder { display: flex; }
.variation-cell.done .var-placeholder { display: none; }
.variation-hint { font-size: .72rem; color: var(--surface-500); text-align: center; }

/* ─── Lightbox ─── */
.var-lightbox {
  position: fixed; inset: 0; z-index: 2000;
  display: flex; align-items: center; justify-content: center;
}
.var-lightbox-bg { position: absolute; inset: 0; background: rgba(0,0,0,.85); cursor: pointer; }
.var-lightbox-content {
  position: relative; z-index: 1; display: flex; flex-direction: column;
  align-items: center; gap: 16px; max-width: 90vw; max-height: 90vh;
}
.var-lightbox-content img {
  max-width: 100%; max-height: 75vh;
  border-radius: var(--radius-lg); object-fit: contain;
}
.var-lightbox-actions { display: flex; gap: 10px; }

/* ─── History ─── */
.history-section { border-top: 1px solid var(--surface-200); padding: 16px; }
.history-header {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px;
}
.history-header h3 {
  display: flex; align-items: center; gap: 6px;
  font-size: .82rem; font-weight: 700; color: var(--surface-700);
}
.history-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(72px, 1fr)); gap: 8px;
}
.history-empty {
  grid-column: 1 / -1; text-align: center;
  padding: 16px; font-size: .8rem; color: var(--surface-500);
}
.history-item {
  position: relative;
  aspect-ratio: 1; border-radius: var(--radius-md); overflow: hidden;
  cursor: pointer; border: 1.5px solid var(--surface-300);
  transition: all var(--tr-fast); animation: scaleIn var(--tr-spring) ease;
}
.history-item:hover {
  border-color: var(--banana-400); transform: scale(1.05); box-shadow: var(--shadow-glow);
}
.history-item img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ➕ 参照画像に追加ボタン */
.hist-add-ref-btn {
  position: absolute; bottom: 4px; left: 4px;
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(26,115,232,.85); backdrop-filter: blur(4px);
  border: none; border-radius: 50%;
  color: white; font-size: .65rem; cursor: pointer;
  opacity: 0; transition: opacity var(--tr-fast);
  z-index: 2;
}
.history-item:hover .hist-add-ref-btn { opacity: 1; }
.hist-add-ref-btn:hover { background: rgba(26,115,232,1); transform: scale(1.15); }

/* 🔳 背景透過ボタン */
.hist-bg-remove-btn {
  position: absolute; bottom: 4px; right: 4px;
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(30,30,30,.85); backdrop-filter: blur(4px);
  border: none; border-radius: 50%;
  color: white; font-size: .65rem; cursor: pointer;
  opacity: 0; transition: opacity var(--tr-fast);
  z-index: 2;
}
.history-item:hover .hist-bg-remove-btn { opacity: 1; }
.hist-bg-remove-btn:hover { background: rgba(60,60,60,1); transform: scale(1.15); }

/* ─── History Tooltip ─── */
.tooltip-wrap { position: relative; }
.hist-tooltip {
  position: absolute; bottom: calc(100% + 8px); left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: rgba(0,0,0,.85); color: #fff;
  padding: 6px 10px; border-radius: var(--radius-sm);
  font-size: .65rem; white-space: nowrap; pointer-events: none;
  opacity: 0; transition: all var(--tr-fast); z-index: 100;
  backdrop-filter: blur(4px); border: 1px solid rgba(255,255,255,.1);
  text-align: center; display: flex; flex-direction: column; gap: 4px;
}
.hist-tooltip::after {
  content: ''; position: absolute; top: 100%; left: 50%;
  transform: translateX(-50%); border: 4px solid transparent;
  border-top-color: rgba(0,0,0,.85);
}
.tooltip-wrap:hover .hist-tooltip { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ─── Result Prompt Info ─── */
.result-prompt-info {
  margin-top: 12px; padding: 12px;
  background: var(--surface-100); border-radius: var(--radius-md);
  border: 1px solid var(--surface-200);
}