/* 现代极简风格美化 */
:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif !important;
  background-color: var(--bg) !important;
  color: var(--text) !important;
  max-width: 820px !important;
  margin: 30px auto !important;
  padding: 0 20px !important;
  line-height: 1.6 !important;
}

#nav {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  padding: 12px 0 24px 0 !important;
  border-bottom: 1px solid var(--border) !important;
  margin-bottom: 24px !important;
}

#nav b {
  font-size: 1.25rem !important;
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
}

#nav a {
  color: var(--text-muted) !important;
  text-decoration: none !important;
  font-size: 0.95rem !important;
  transition: color 0.15s !important;
}

#nav a:hover {
  color: var(--primary) !important;
}

/* 主卡片容器 */
form#pasta-form, .code-container, .qr-container {
  background: var(--card-bg) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius) !important;
  padding: 24px !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04) !important;
}

/* 设置项栅格 */
#settings {
  display: grid !important;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)) !important;
  gap: 16px !important;
  margin-bottom: 20px !important;
  height: auto !important;
}

#settings > div {
  display: flex !important;
  flex-direction: column !important;
  gap: 6px !important;
}

#settings label {
  font-size: 0.82rem !important;
  font-weight: 600 !important;
  color: var(--text-muted) !important;
  text-transform: uppercase !important;
  letter-spacing: 0.5px !important;
}

#settings label sup a {
  text-decoration: none !important;
  color: #94a3b8 !important;
}

select, input[type="password"], input[type="text"] {
  width: 100% !important;
  height: 40px !important;
  padding: 0 12px !important;
  border: 1px solid var(--border) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  color: var(--text) !important;
  font-size: 0.9rem !important;
  outline: none !important;
  box-sizing: border-box !important;
  transition: border-color 0.15s, box-shadow 0.15s !important;
}

select:focus, input:focus, textarea:focus {
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12) !important;
}

/* 大文本框 */
textarea#content-input, textarea {
  width: 100% !important;
  min-height: 220px !important;
  padding: 16px !important;
  border: 1px solid var(--border) !important;
  border-radius: 8px !important;
  background: #f8fafc !important;
  color: var(--text) !important;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace !important;
  font-size: 0.92rem !important;
  box-sizing: border-box !important;
  resize: vertical !important;
  outline: none !important;
  line-height: 1.5 !important;
}

/* 附件上传区域 */
#attach-file-button-label {
  display: block !important;
  width: 100% !important;
  box-sizing: border-box !important;
  padding: 14px 20px !important;
  border: 2px dashed #cbd5e1 !important;
  border-radius: 8px !important;
  background: #f8fafc !important;
  color: var(--text-muted) !important;
  text-align: center !important;
  font-size: 0.9rem !important;
  cursor: pointer !important;
  transition: all 0.2s !important;
  margin: 16px 0 !important;
}

#attach-file-button-label:hover {
  border-color: var(--primary) !important;
  color: var(--primary) !important;
  background: #eff6ff !important;
}

/* 按钮美化 */
input[type="submit"], button[type="submit"], .small-button, button {
  background: var(--primary) !important;
  color: #ffffff !important;
  border: none !important;
  border-radius: 8px !important;
  padding: 10px 24px !important;
  font-size: 0.95rem !important;
  font-weight: 500 !important;
  cursor: pointer !important;
  transition: background 0.15s, transform 0.05s !important;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.2) !important;
}

input[type="submit"]:hover, button:hover {
  background: var(--primary-hover) !important;
}

input[type="submit"]:active, button:active {
  transform: scale(0.98) !important;
}

.small-button {
  padding: 6px 14px !important;
  font-size: 0.85rem !important;
}

/* 查看页面美化 */
.code-container {
  margin-top: 16px !important;
  background: #ffffff !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius) !important;
  overflow-x: auto !important;
}

pre code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace !important;
  font-size: 0.92rem !important;
  line-height: 1.6 !important;
}

/* 二维码页面 */
svg {
  max-width: 240px !important;
  height: auto !important;
  border-radius: 12px !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08) !important;
  padding: 12px !important;
  background: #ffffff !important;
}

/* 链接样式 */
a {
  color: var(--primary) !important;
  text-decoration: none !important;
}
a:hover {
  text-decoration: underline !important;
}

/* 页脚 */
p {
  color: var(--text-muted) !important;
  font-size: 0.85rem !important;
  margin-top: 30px !important;
}