/* ============ 亮色模式（默认）============ */
.bg-body {
  background: #fafaf9;
}

/* ============ 暗色模式 ============ */
@media (prefers-color-scheme: dark) {
  .bg-body {
    background: #0c0a09;
  }
}

/* 隐藏滚动条 */
.no-scrollbar::-webkit-scrollbar {
  display: none;
}
.no-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* 结果区域滚动条 */
#results-area::-webkit-scrollbar {
  width: 3px;
}
#results-area::-webkit-scrollbar-track {
  background: transparent;
}
#results-area::-webkit-scrollbar-thumb {
  background: rgba(120, 113, 108, 0.15);
  border-radius: 3px;
}
@media (prefers-color-scheme: dark) {
  #results-area::-webkit-scrollbar-thumb {
    background: rgba(120, 113, 108, 0.3);
  }
}
#results-area::-webkit-scrollbar-thumb:hover {
  background: rgba(120, 113, 108, 0.3);
}
@media (prefers-color-scheme: dark) {
  #results-area::-webkit-scrollbar-thumb:hover {
    background: rgba(120, 113, 108, 0.5);
  }
}

/* 模式按钮 */
.mode-btn {
  background: transparent;
  color: #78716c;
}
.mode-btn.active {
  background: #1c1917;
  color: #ffffff;
}
@media (prefers-color-scheme: dark) {
  .mode-btn {
    color: #a8a29e;
  }
  .mode-btn.active {
    background: #fafaf9;
    color: #1c1917;
  }
}

/* 安全区域 */
.safe-area-bottom {
  padding-bottom: env(safe-area-inset-bottom, 0.75rem);
}

/* select 下拉箭头 */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2378716c' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 5px center;
}
@media (prefers-color-scheme: dark) {
  select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23a8a29e' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  }
}

/* 结果卡片 hover */
#results-list > div {
  transition: box-shadow 0.15s ease;
}
#results-list > div:hover {
  box-shadow: 0 2px 12px rgba(28, 25, 23, 0.04);
}
@media (prefers-color-scheme: dark) {
  #results-list > div:hover {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  }
}

/* 登录背景 */
#login-screen {
  background: rgba(250, 250, 249, 0.85);
  backdrop-filter: blur(6px);
}
@media (prefers-color-scheme: dark) {
  #login-screen {
    background: rgba(12, 10, 9, 0.85);
  }
}

/* 历史页面滚动条 */
main::-webkit-scrollbar {
  width: 3px;
}
main::-webkit-scrollbar-track {
  background: transparent;
}
main::-webkit-scrollbar-thumb {
  background: rgba(120, 113, 108, 0.15);
  border-radius: 3px;
}
@media (prefers-color-scheme: dark) {
  main::-webkit-scrollbar-thumb {
    background: rgba(120, 113, 108, 0.3);
  }
}

/* 动画性能 */
.animate-fade-in,
.animate-slide-up {
  will-change: transform, opacity;
}

/* 图片模态框 */
#image-modal {
  transition: opacity 0.15s ease;
}

/* 禁用拖拽 */
img {
  -webkit-user-drag: none;
  user-select: none;
}

/* 按钮点击 */
button:active {
  transform: scale(0.96);
}
button:disabled {
  pointer-events: none;
}

/* textarea 自动增高过渡 */
textarea {
  transition: height 0.1s ease;
}

/* 移动端字体防放大 */
@media screen and (max-width: 640px) {
  textarea, input, select {
    font-size: 16px;
  }
}