/* ============================================
   星空画室 (studio panel)
   粉紫配色 · 星空魔法少女风格
   ============================================ */

/* 画室入口按钮 (ai-chat.html 顶部) */
.studio-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: linear-gradient(135deg, rgba(255,105,180,0.15), rgba(138,43,226,0.15));
  border: 1px solid rgba(255,105,180,0.3);
  border-radius: 20px;
  color: #fff;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.3s;
  white-space: nowrap;
}
.studio-trigger:hover {
  background: linear-gradient(135deg, rgba(255,105,180,0.25), rgba(138,43,226,0.25));
  border-color: rgba(255,105,180,0.5);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255,105,180,0.2);
}
.studio-trigger:active { transform: scale(0.97); }
.studio-trigger .icon { font-size: 16px; }

/* 画室面板 (overlay) */
.studio-panel {
  position: fixed;
  top: 0; right: 0;
  width: 420px;
  max-width: 90vw;
  height: 100vh;
  height: 100dvh;
  background: linear-gradient(180deg, rgba(20,10,40,0.97), rgba(30,15,50,0.98));
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-left: 1px solid rgba(255,105,180,0.2);
  box-shadow: -8px 0 32px rgba(0,0,0,0.4);
  z-index: 9000;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
  overflow: hidden;
}
.studio-panel.open { transform: translateX(0); }

/* 面板头部 */
.studio-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(255,105,180,0.1), rgba(138,43,226,0.1));
  border-bottom: 1px solid rgba(255,105,180,0.15);
  flex-shrink: 0;
}
.studio-head-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
}
.studio-head-title .title-icon { font-size: 20px; }
.studio-close {
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.08);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s;
}
.studio-close:hover { background: rgba(255,255,255,0.15); transform: rotate(90deg); }

/* 面板主体 */
.studio-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.studio-body::-webkit-scrollbar { width: 4px; }
.studio-body::-webkit-scrollbar-thumb { background: rgba(255,105,180,0.3); border-radius: 2px; }

/* 类型切换 */
.studio-type-tabs {
  display: flex;
  gap: 8px;
  background: rgba(255,255,255,0.05);
  padding: 4px;
  border-radius: 12px;
}
.studio-type-tab {
  flex: 1;
  padding: 10px;
  text-align: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 10px;
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.studio-type-tab.active {
  background: linear-gradient(135deg, rgba(255,105,180,0.2), rgba(138,43,226,0.2));
  border-color: rgba(255,105,180,0.4);
  color: #fff;
}
.studio-type-tab:hover:not(.active) { color: rgba(255,255,255,0.9); }

/* Prompt 输入 */
.studio-prompt-area {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.studio-prompt-label {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.studio-prompt-char-count { font-size: 11px; }
.studio-prompt {
  width: 100%;
  min-height: 80px;
  padding: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  color: #fff;
  font-size: 13px;
  line-height: 1.5;
  resize: vertical;
  transition: border-color 0.2s;
  font-family: inherit;
}
.studio-prompt:focus {
  outline: none;
  border-color: rgba(255,105,180,0.5);
  background: rgba(255,255,255,0.08);
}
.studio-prompt::placeholder { color: rgba(255,255,255,0.3); }

/* 风格预设 */
.studio-styles {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.studio-style-btn {
  padding: 8px 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  color: rgba(255,255,255,0.7);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 4px;
}
.studio-style-btn:hover {
  background: rgba(255,105,180,0.15);
  border-color: rgba(255,105,180,0.3);
  color: #fff;
}
.studio-style-btn.active {
  background: linear-gradient(135deg, rgba(255,105,180,0.3), rgba(138,43,226,0.3));
  border-color: rgba(255,105,180,0.5);
  color: #fff;
}

/* 尺寸选择 (仅图片) */
.studio-size-row {
  display: flex;
  gap: 8px;
}
.studio-size-btn {
  flex: 1;
  padding: 8px;
  text-align: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  color: rgba(255,255,255,0.7);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.studio-size-btn:hover { border-color: rgba(255,105,180,0.3); color: #fff; }
.studio-size-btn.active {
  background: rgba(255,105,180,0.15);
  border-color: rgba(255,105,180,0.4);
  color: #fff;
}

/* 生成按钮 */
.studio-generate-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #ff69b4, #8a2be2);
  border: none;
  border-radius: 14px;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 16px rgba(255,105,180,0.3);
}
.studio-generate-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,105,180,0.4);
}
.studio-generate-btn:active:not(:disabled) { transform: scale(0.98); }
.studio-generate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* 额度显示 */
.studio-quota {
  display: flex;
  gap: 12px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  font-size: 12px;
  color: rgba(255,255,255,0.6);
}
.studio-quota-item { display: flex; align-items: center; gap: 4px; }
.studio-quota-item .icon { font-size: 14px; }
.studio-quota-used { color: #ff69b4; font-weight: 600; }

/* Loading 动画 */
.studio-loading {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  gap: 16px;
}
.studio-loading.show { display: flex; }
.studio-loading-spinner {
  width: 60px; height: 60px;
  position: relative;
}
.studio-loading-spinner::before,
.studio-loading-spinner::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: #ff69b4;
  animation: studio-spin 1s linear infinite;
}
.studio-loading-spinner::before {
  inset: 0;
  border-top-color: #8a2be2;
  animation-duration: 1.5s;
  animation-direction: reverse;
}
.studio-loading-spinner::after {
  inset: 10px;
}
@keyframes studio-spin { to { transform: rotate(360deg); } }
.studio-loading-text {
  color: rgba(255,255,255,0.7);
  font-size: 13px;
  text-align: center;
}
.studio-loading-sub {
  color: rgba(255,255,255,0.4);
  font-size: 11px;
}

/* 结果展示 */
.studio-result {
  display: none;
  flex-direction: column;
  gap: 12px;
}
.studio-result.show { display: flex; }
.studio-result-img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.studio-result-actions {
  display: flex;
  gap: 8px;
}
.studio-result-btn {
  flex: 1;
  padding: 10px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  color: rgba(255,255,255,0.8);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.studio-result-btn:hover {
  background: rgba(255,105,180,0.15);
  border-color: rgba(255,105,180,0.3);
  color: #fff;
}

/* 历史素材 */
.studio-history {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 16px;
}
.studio-history-title {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 10px;
}
.studio-history-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.studio-history-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s;
}
.studio-history-item:hover {
  border-color: rgba(255,105,180,0.5);
  transform: scale(1.03);
}
.studio-history-item img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.studio-history-item .type-badge {
  position: absolute;
  top: 4px; right: 4px;
  padding: 2px 6px;
  background: rgba(0,0,0,0.6);
  border-radius: 4px;
  font-size: 10px;
  color: #fff;
}
.studio-history-empty {
  text-align: center;
  padding: 20px;
  color: rgba(255,255,255,0.3);
  font-size: 12px;
}

/* Toast 提示 */
.studio-toast {
  position: fixed;
  top: 20px; left: 50%;
  transform: translateX(-50%) translateY(-100px);
  padding: 12px 24px;
  background: rgba(30,15,50,0.95);
  border: 1px solid rgba(255,105,180,0.3);
  border-radius: 12px;
  color: #fff;
  font-size: 13px;
  z-index: 9500;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 90vw;
}
.studio-toast.show { transform: translateX(-50%) translateY(0); }
.studio-toast.error { border-color: rgba(255,100,100,0.5); }
.studio-toast.success { border-color: rgba(100,255,150,0.5); }

/* 移动端适配 */
@media (max-width: 600px) {
  .studio-panel { width: 100vw; max-width: 100vw; }
  .studio-styles { gap: 6px; }
  .studio-style-btn { padding: 6px 10px; font-size: 11px; }
}