:root {
  --primary: #3498db;
  --primary-dark: #2980b9;
  --primary-light: #d6eaf8;
  --text: #333;
  --gray: #95a5a6;
  --bg: #f8f9fa;
  --card-bg: #fff;
  --border: #e0e0e0;
  --success: #27ae60;
  --error: #e74c3c;
  --shadow: 0 4px 12px rgba(0,0,0,0.08);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
  background: linear-gradient(135deg, #f0f7ff, #e3f2fd);
  color: var(--text);
  line-height: 1.6;
  padding: 20px;
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 30px;
}

h1 {
  font-size: 2.2rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.subtitle {
  color: var(--gray);
  font-size: 1rem;
}

.card {
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
}

.card-title {
  font-size: 1.4rem;
  color: var(--primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.input-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #555;
}

select, textarea, input[type="text"] {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

select:focus, textarea:focus, input[type="text"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

textarea {
  min-height: 100px;
  resize: vertical;
}

/* ✅ 拖拽区域样式 */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 24px;
  text-align: center;
  background-color: #fafafa;
  transition: all 0.3s;
  cursor: pointer;
}

.dropzone.drag-over {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.dropzone-content p {
  margin: 0 0 12px;
  color: #777;
  font-size: 1rem;
}

.dropzone-content {
  pointer-events: none; 
}

.dropzone-content * {
  pointer-events: auto;
}

.btn-secondary {
  background-color: #95a5a6;
  color: white;
  border: none;
  padding: 8px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-secondary:hover {
  background-color: #7f8c8d;
}

/* ✅ 文件名：右对齐 + 圆角边框 */
.file-name {
  margin-top: 8px;
  font-size: 0.9rem;
  color: #666;
  word-break: break-all;
  text-align: right;
  padding: 6px 10px;
  background-color: var(--primary-light);
  border: 1px solid var(--border);
  border-radius: 6px;
  max-width: 100%;
}

.btn {
  background-color: var(--primary);
  color: white;
  border: none;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.1s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn:hover {
  background-color: var(--primary-dark);
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  background-color: #bdc3c7;
  cursor: not-allowed;
  transform: none;
}

.btn-copy {
  background-color: #95a5a6;
  margin-top: 10px;
}

.btn-copy:hover {
  background-color: #7f8c8d;
}

/* 所有按钮组右对齐 */
.btn-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.btn-right {
  margin-left: auto;
}

.result-group {
  margin-top: 20px;
}

.result-label {
  font-weight: 600;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.result-value {
  background-color: #f1f3f5;
  padding: 14px;
  border-radius: 8px;
  font-family: 'Consolas', monospace;
  font-size: 1.1rem;
  word-break: break-all;
  min-height: 24px;
}

.status {
  padding: 12px;
  border-radius: 8px;
  font-weight: 600;
  text-align: left;
  margin-top: 16px;
  white-space: pre-wrap;
  word-break: break-word;
}

.status.success {
  background-color: rgba(39, 174, 96, 0.15);
  color: var(--success);
}

.status.error {
  background-color: rgba(231, 76, 60, 0.15);
  color: var(--error);
}

.progress {
  height: 6px;
  background-color: #ecf0f1;
  border-radius: 3px;
  margin-top: 12px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--primary);
  width: 0%;
  transition: width 0.3s;
}

.tabs {
  display: flex;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.tab {
  padding: 12px 24px;
  cursor: pointer;
  font-weight: 600;
  color: #777;
  border-bottom: 3px solid transparent;
}

.tab.active {
  color: var(--primary);
  border-bottom: 3px solid var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.logo {
  font-size: 2.2rem;
  font-weight: 500;
  color: var(--primary);
  margin-bottom: 0.8rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
}

.home-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  /*height: 24px;*/
  min-width: 28px;
  padding: 2px 8px;
  margin-top: -18px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 14px;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  user-select: none;
}

.home-badge:hover {
  background: var(--primary);
  color: white;
}

.home-badge:focus {
  outline: 2px solid rgba(52, 152, 219, 0.4);
  outline-offset: 2px;
}

footer {
    text-align: center;
    margin-top: 20px;
    color: var(--text-light);
    font-size: 0.9rem;
  }
  
footer a,
footer a:visited,
footer a:hover,
footer a:active {
color: var(--text-light);
text-decoration: none;
}

@media (max-width: 600px) {
  .btn-group {
    flex-direction: column;
  }
  .btn {
    width: 100%;
  }
}