:root {
  --primary-color: #000000;
  --background-color: #f5f5f7;
  --card-bg: #ffffff;
  --text-main: #1d1d1f;
  --text-muted: #86868b;
  --border-color: #d2d2d7;
  --error-color: #ff3b30;
  --success-color: #34c759;
  --input-bg: #fbfbfd;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI',
    Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-main);
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: flex-start; /* 改为靠上对齐 */
  min-height: 100vh;
  padding: 40px 16px; /* 进一步减小移动端左右边距 */
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

.container {
  background-color: var(--card-bg);
  width: 100%;
  max-width: 400px;
  padding: 32px 24px; /* 减小卡片内部的左右内边距，给内容留出更多空间 */
  border-radius: 20px; /* 稍微减小一点外边框的圆角，适配移动端 */
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08), 0 2px 10px rgba(0, 0, 0, 0.04);
  box-sizing: border-box;
}

@media (max-width: 480px) {
  body {
    padding: 20px 12px; /* 手机屏幕下，进一步缩减屏幕外边距 */
  }

  .container {
    padding: 28px 20px; /* 手机屏幕下，卡片内边距也变得更紧凑 */
    border-radius: 16px;
  }
}

header {
  text-align: center;
  margin-bottom: 24px; /* 减小间距 */
}

.logo {
  width: 48px; /* 稍微缩小 logo */
  height: 48px;
  border-radius: 12px;
  display: block;
  margin: 0 auto 12px auto; /* 减小间距 */
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

header h1 {
  margin: 0 0 4px 0;
  font-size: 22px; /* 稍微缩小标题 */
  font-weight: 700;
  color: var(--primary-color);
  letter-spacing: -0.5px;
}

header p {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
}

.form-group {
  margin-bottom: 16px; /* 减小输入框之间的间距 */
}

.form-group label {
  display: block;
  margin-bottom: 6px; /* 减小 label 与输入框的间距 */
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}

.required {
  color: var(--error-color);
}

.form-group input {
  width: 100%;
  padding: 12px 14px; /* 减小输入框内边距 */
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-size: 15px;
  box-sizing: border-box;
  background-color: var(--input-bg);
  color: var(--text-main);
  transition: all 0.2s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  background-color: #fff;
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.05);
}

.form-group input::placeholder {
  color: #a1a1a6;
}

.input-with-btn,
.value-with-btn {
  position: relative;
  display: block;
  width: 100%;
}

.input-with-btn input {
  padding-right: 76px;
}

.action-btn {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  padding: 6px 12px; /* 稍微减小按钮宽度 */
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
  transition: all 0.2s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

.action-btn:hover {
  background-color: #f5f5f7;
  border-color: #c6c6c8;
}

.action-btn:active {
  transform: translateY(-50%) scale(0.96);
}

.btn {
  width: 100%;
  padding: 14px; /* 稍微减小按钮内边距 */
  border: none;
  border-radius: 12px;
  font-size: 15px; /* 稍微减小字体 */
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.primary-btn {
  background-color: var(--primary-color);
  color: #ffffff;
  margin-top: 8px; /* 减小间距 */
}

.primary-btn:hover {
  opacity: 0.85;
  transform: scale(0.98);
}

.primary-btn:disabled {
  background-color: var(--text-muted);
  cursor: not-allowed;
  transform: none;
}

.secondary-btn {
  background-color: var(--input-bg);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  margin-top: 24px;
}

.secondary-btn:hover {
  background-color: #e8e8ed;
}

.error-message {
  color: var(--error-color);
  font-size: 14px;
  margin-bottom: 16px;
  text-align: center;
  min-height: 20px;
  font-weight: 500;
}

.hidden {
  display: none !important;
}

#result-section {
  text-align: center;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.success-icon {
  width: 56px;
  height: 56px;
  background-color: var(--success-color);
  color: white;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 20px auto;
  box-shadow: 0 4px 12px rgba(52, 199, 89, 0.3);
}

#result-section h2 {
  margin: 0 0 6px 0;
  font-size: 22px;
  color: var(--primary-color);
}

.success-subtitle {
  margin: 0 0 20px 0; /* 减小间距 */
  color: var(--text-muted);
  font-size: 13px; /* 稍微缩小字体 */
}

.info-card {
  background-color: transparent;
  text-align: left;
}

.info-row {
  margin-bottom: 12px; /* 减小间距 */
}

.info-row:last-child {
  margin-bottom: 0;
}

.info-row .label {
  display: block;
  font-weight: 600;
  color: var(--text-main);
  font-size: 12px; /* 稍微缩小标签字体 */
  margin-bottom: 4px; /* 减小间距 */
}

.value-with-btn .value {
  width: 100%;
  padding: 12px 64px 12px 12px; /* 稍微减小右侧和左侧内边距，给地址文本留出更多显示空间 */
  box-sizing: border-box;
  background-color: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-size: 13px; /* 稍微缩小值字体 */
  font-family: ui-monospace, SFMono-Regular, Consolas, 'Liberation Mono', Menlo,
    monospace;
  color: var(--text-main);
  word-break: break-all;
}