/* ============================================================
 * 单词搭子 Web 端样式 (桌面 web, 桌面浏览器设计)
 * 主色: #07c160 (跟小程序主色一致)
 * ============================================================ */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f5f5f5;
  color: #333;
  min-height: 100vh;
}

/* ============================ Header ============================ */
.topbar {
  background: #07c160;
  color: #fff;
  padding: 16px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar .logo {
  font-size: 22px;
  font-weight: bold;
  letter-spacing: 0.5px;
}

.topbar .user-area {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
}

.topbar .user-area .user-name {
  color: #fff;
  opacity: 0.95;
}

/* ============================ Main ============================ */
main {
  max-width: 1200px;
  margin: 32px auto;
  padding: 0 32px;
}

.container {
  background: #fff;
  border-radius: 8px;
  padding: 32px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.container h2 {
  margin-bottom: 24px;
  font-size: 20px;
}

.container .subtitle {
  color: #999;
  margin-bottom: 16px;
  font-size: 14px;
}

/* ============================ Login Card ============================ */
.login-card {
  max-width: 420px;
  margin: 80px auto;
  background: #fff;
  border-radius: 8px;
  padding: 40px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.login-card h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.login-card .subtitle {
  color: #999;
  margin-bottom: 24px;
  font-size: 14px;
}

.login-card .form-item {
  margin-bottom: 16px;
}

.login-card label {
  display: block;
  font-size: 14px;
  margin-bottom: 8px;
  color: #555;
}

.login-card input {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
  transition: border-color 0.2s;
}

.login-card input:focus {
  outline: none;
  border-color: #07c160;
}

.login-card .error {
  color: #e74c3c;
  font-size: 13px;
  margin-top: 8px;
}

.login-card .hint {
  margin-top: 16px;
  color: #999;
  font-size: 12px;
  text-align: center;
}

.login-card code {
  background: #f5f5f5;
  padding: 2px 6px;
  border-radius: 3px;
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  color: #555;
}

/* ============================ Buttons ============================ */
.btn-primary {
  width: 100%;
  padding: 12px;
  background: #07c160;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-primary:hover:not(:disabled) {
  background: #06a052;
}

.btn-primary:disabled {
  background: #95d5b1;
  cursor: not-allowed;
}

.btn-secondary {
  padding: 8px 16px;
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.btn-link {
  background: none;
  border: none;
  color: #07c160;
  cursor: pointer;
  font-size: 14px;
  padding: 4px 8px;
}

.btn-link:hover {
  text-decoration: underline;
}

/* ============================ Data Table ============================ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #eee;
}

.data-table th {
  background: #fafafa;
  font-weight: 600;
  color: #555;
}

.data-table tr:hover {
  background: #fafafa;
}

.data-table .online {
  color: #07c160;
  font-weight: 500;
}

.data-table .offline {
  color: #999;
}

.data-table .empty {
  text-align: center;
  color: #999;
  padding: 32px;
}

/* ============================ Upload Section ============================ */
.upload-section {
  max-width: 800px;
  margin: 0 auto;
}

.upload-card {
  background: #e8f7ed;
  padding: 32px;
  border-radius: 8px;
  margin-top: 16px;
}

.upload-card .form-item {
  margin-bottom: 20px;
}

.upload-card label {
  display: block;
  font-size: 14px;
  margin-bottom: 8px;
  color: #555;
}

.grade-picker {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.grade-option {
  padding: 8px 18px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.grade-option:hover {
  border-color: #07c160;
}

.grade-option.active {
  background: #07c160;
  color: #fff;
  border-color: #07c160;
}

.upload-area {
  text-align: center;
  padding: 48px 20px;
  border: 2px dashed #b8e6c6;
  border-radius: 8px;
  background: #fff;
  margin: 16px 0;
}

.upload-area .btn-secondary {
  background: #07c160;
  color: #fff;
  border-color: #07c160;
  padding: 10px 24px;
  font-size: 15px;
}

.upload-area .btn-secondary:hover {
  background: #06a052;
  border-color: #06a052;
}

.upload-area .hint {
  margin-top: 12px;
  color: #999;
  font-size: 12px;
}

#preview {
  margin: 16px 0;
  text-align: center;
}

#preview img {
  max-width: 100%;
  max-height: 400px;
  border-radius: 4px;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

#preview .btn-primary {
  width: auto;
  padding: 10px 32px;
  display: inline-block;
}

/* ============================ Result ============================ */
.result {
  margin-top: 24px;
  padding: 24px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.result .loading {
  text-align: center;
  padding: 24px;
  color: #999;
}

.result .total-score {
  font-size: 64px;
  font-weight: bold;
  color: #07c160;
  text-align: center;
  line-height: 1;
}

.result .total-score-label {
  text-align: center;
  color: #999;
  font-size: 14px;
  margin-bottom: 8px;
}

.result .total-eval {
  font-size: 16px;
  text-align: center;
  color: #555;
  margin: 16px 0;
  font-style: italic;
  padding: 0 24px;
}

.result .sents-feedback {
  border-top: 1px solid #eee;
  padding-top: 16px;
  margin-top: 16px;
}

.result .sents-feedback h3 {
  font-size: 16px;
  margin-bottom: 12px;
  color: #555;
}

.result .sent-item {
  padding: 12px 0;
  border-bottom: 1px solid #f5f5f5;
}

.result .sent-item:last-child {
  border-bottom: none;
}

.result .sent-text {
  font-weight: 600;
  margin-bottom: 4px;
  color: #333;
}

.result .sent-comment {
  color: #666;
  font-size: 14px;
  line-height: 1.5;
}

.result .error {
  color: #e74c3c;
  padding: 16px;
  text-align: center;
}
/* ===== v0.70 批改结果补充样式 (分项评分 / 逐句批改) ===== */
.major-score {
  margin-top: 20px;
}
.major-score h3,
.sents-feedback h3 {
  font-size: 15px;
  color: #666;
  margin: 0 0 10px;
}
.score-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.score-item {
  background: #f8f8f8;
  border-radius: 8px;
  padding: 10px 4px;
  text-align: center;
}
.score-item-label {
  font-size: 12px;
  color: #999;
}
.score-item-value {
  font-size: 20px;
  font-weight: bold;
  color: #333;
  margin-top: 2px;
}
.sent-corrected {
  font-size: 14px;
  color: #07c160;
  margin-top: 4px;
}
.sent-tag {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  margin: 6px 6px 0 0;
}
.sent-tag.grammar {
  background: #fee2e2;
  color: #dc2626;
}
.sent-tag.typo {
  background: #fef3c7;
  color: #d97706;
}
.sent-item.has-error {
  border-left: 3px solid #ff4d4f;
  background: #fff5f5;
}
.error-list {
  margin-top: 8px;
}
.error-item {
  background: rgba(255, 255, 255, 0.6);
  padding: 6px 10px;
  border-radius: 4px;
  margin-bottom: 4px;
  font-size: 12px;
  color: #dc2626;
}
.duration {
  margin-top: 16px;
  text-align: center;
  font-size: 12px;
  color: #aaa;
}
.muted {
  color: #aaa;
  font-size: 12px;
}

/* v0.72 文本批改 tab + textarea */
.tab-bar {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 2px solid #e0e0e0;
}
.tab-btn {
  flex: 1;
  padding: 12px;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  font-size: 15px;
  color: #888;
  transition: all 0.2s;
  font-family: inherit;
}
.tab-btn:hover {
  color: #5b9eff;
}
.tab-btn.active {
  color: #5b9eff;
  border-bottom-color: #5b9eff;
  font-weight: 600;
}
.tab-pane {
  padding: 16px 0;
}
textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-family: 'Georgia', 'Microsoft YaHei', serif;
  font-size: 14px;
  line-height: 1.6;
  resize: vertical;
  min-height: 200px;
  box-sizing: border-box;
  background: #fff;
  color: #333;
}
textarea:focus {
  outline: none;
  border-color: #5b9eff;
  box-shadow: 0 0 0 3px rgba(91, 158, 255, 0.1);
}
.text-counter {
  text-align: right;
  font-size: 12px;
  color: #aaa;
  margin-top: 4px;
}
.text-counter.over {
  color: #dc2626;
  font-weight: 600;
}