* { box-sizing: border-box; }
body {
  margin: 0; 
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: #1f2937; 
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
header { 
  padding: 32px 24px; 
  background: linear-gradient(135deg, #4f46e5, #0ea5e9); 
  color: white; 
  box-shadow: 0 8px 32px rgba(0,0,0,.12);
  position: relative;
  overflow: hidden;
}
header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.05"><circle cx="30" cy="30" r="30"/></g></svg>') repeat;
  pointer-events: none;
}
h1 { 
  margin: 0 0 8px 0; 
  font-size: 28px; 
  font-weight: 700;
  letter-spacing: -.5px;
  position: relative;
  z-index: 1;
}
.subtitle { 
  margin: 0; 
  opacity: .9; 
  font-size: 16px;
  position: relative;
  z-index: 1;
}
main { 
  padding: 24px; 
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  flex: 1;
  width: 100%;
}
.toolbar { 
  display: flex; 
  gap: 16px; 
  align-items: center; 
  margin-bottom: 20px; 
  flex-wrap: wrap;
  background: white;
  padding: 16px 20px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.08);
  justify-content: space-between;
}

.toolbar-left {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  flex: 1;
}
.status-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.countdown {
  font-size: 12px;
  color: #6b7280;
  font-weight: 500;
}
#refresh { 
  padding: 10px 16px; 
  border: 0; 
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: white; 
  border-radius: 10px; 
  cursor: pointer; 
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(37,99,235,.3);
  transition: all 0.2s ease;
  position: relative;
  min-width: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}
#refresh:hover:not(:disabled) { 
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37,99,235,.4);
}
#refresh:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}
.spinner {
  animation: spin 1s linear infinite;
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
#filter { 
  padding: 10px 14px; 
  border-radius: 10px; 
  border: 1px solid #d1d5db; 
  min-width: 280px; 
  background: white;
  font-size: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
#filter:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59,130,246,.1);
}

table { 
  width: 100%; 
  border-collapse: collapse; 
  background: white; 
  border-radius: 12px; 
  overflow: hidden; 
  box-shadow: 0 8px 32px rgba(2,6,23,.1);
  margin-bottom: 24px;
}
.table-container {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(2,6,23,.1);
  margin-bottom: 24px;
}
.table-container table {
  box-shadow: none;
  margin-bottom: 0;
  min-width: 600px; /* Minimum width to ensure readability */
}
th, td { 
  padding: 8px 12px; 
  border-bottom: 1px solid #f1f5f9; 
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  vertical-align: middle;
}
th { 
  background: linear-gradient(135deg, #f8fafc, #f1f5f9);
  color: #374151; 
  font-weight: 600;
  position: sticky; 
  top: 0; 
  z-index: 2;
  border-bottom: 2px solid #e5e7eb;
}
/* Dynamic column widths that fit content - optimized for space efficiency */
th:nth-child(1), td:nth-child(1) { /* Code */
  width: auto;
  min-width: fit-content;
  max-width: 200px; /* 减少最大宽度，更紧凑 */
}
th:nth-child(2), td:nth-child(2) { /* Status */
  width: auto;
  min-width: fit-content;
  max-width: 150px; /* 减少最大宽度，状态标签不需要太宽 */
}
th:nth-child(3), td:nth-child(3) { /* Check Status */
  width: auto;
  min-width: fit-content;
  max-width: 25%;
}
th:nth-child(4), td:nth-child(4) { /* Last Changed */
  width: auto;
  min-width: fit-content;
  max-width: 20%;
}

tr:hover { 
  background: linear-gradient(135deg, #f8fafc, #f0f9ff); 
}
tr:last-child td {
  border-bottom: none;
}
.sortable { 
  cursor: pointer; 
  user-select: none;
  transition: background-color 0.2s ease;
}
.sortable:hover {
  background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
}
.sort-arrow { 
  font-size: 14px; 
  margin-left: 6px;
  font-weight: bold;
  color: #3b82f6;
  opacity: 0.8;
}
.status-tag { 
  padding: 4px 10px; 
  border-radius: 20px; 
  font-size: 13px; /* 适中的状态标签字体 */
  font-weight: 600;
  letter-spacing: .3px;
}
.status-granted { 
  background: linear-gradient(135deg, #dcfce7, #bbf7d0); 
  color: #14532d; 
  border: 1px solid #86efac;
}
.status-proc { 
  background: linear-gradient(135deg, #dbeafe, #bfdbfe); 
  color: #0c4a6e;
  border: 1px solid #93c5fd;
}
.status-notfound { 
  background: linear-gradient(135deg, #fee2e2, #fecaca); 
  color: #7f1d1d;
  border: 1px solid #fca5a5;
}
.status-unknown { 
  background: linear-gradient(135deg, #fef3c7, #fde68a); 
  color: #713f12;
  border: 1px solid #f9c74f;
}

.loading-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.loading-spinner {
  background: white;
  padding: 32px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
}
.spinner-ring {
  width: 40px;
  height: 40px;
  border: 4px solid #e5e7eb;
  border-top: 4px solid #3b82f6;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 16px;
}
.loading-spinner p {
  margin: 0;
  color: #374151;
  font-weight: 500;
}

footer { 
  background: linear-gradient(135deg, #1f2937, #111827);
  color: #9ca3af;
  padding: 24px;
  margin-top: auto;
  width: 100%;
}
.footer-main {
  text-align: left;
  margin-top: 16px;
  margin-bottom: 24px;
  color: #6b7280;
  font-size: 15px;
  font-weight: 500;
}
.footer {
  display: block;
  text-align: center;
  font-size: 13px;
  line-height: 1.6;
}
.footer-line {
  color: #d1d5db;
  margin: 4px 0;
}
.footer-line a {
  color: #60a5fa;
  text-decoration: none;
  font-weight: 500;
}
.footer-line a:hover {
  color: #93c5fd;
  text-decoration: underline;
}

/* 管理面板 */
.management-panel {
  display: flex;
  gap: 0.5rem;
  margin-left: auto;
}

.btn-secondary {
  background: linear-gradient(135deg, #6c757d, #5a6268);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, #5a6268, #545b62);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

/* 模态框 */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  background-color: white;
  margin: 5% auto;
  padding: 2rem;
  border: none;
  border-radius: 12px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  position: relative;
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}

.close {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
  position: absolute;
  right: 1rem;
  top: 1rem;
  cursor: pointer;
  transition: color 0.3s ease;
}

.close:hover {
  color: #333;
}

/* 表单样式 */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #333;
}

.form-group input {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
  box-sizing: border-box;
}

.form-group input:focus {
  outline: none;
  border-color: #007bff;
  box-shadow: 0 0 0 3px rgba(0,123,255,0.1);
}

.form-group small {
  display: block;
  margin-top: 0.25rem;
  color: #666;
  font-size: 0.875rem;
}

/* 验证码样式 */
.captcha-question {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 8px;
  border: 2px solid #e9ecef;
}

.captcha-question span {
  font-weight: 600;
  color: #495057;
  min-width: fit-content;
}

.captcha-question input {
  width: 80px;
  margin: 0;
}

/* 表单按钮 */
.form-actions {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  margin-top: 2rem;
}

.btn-primary {
  background: linear-gradient(135deg, #007bff, #0056b3);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0056b3, #004085);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.btn-danger {
  background: linear-gradient(135deg, #dc3545, #c82333);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.3s ease;
}

.btn-danger:hover {
  background: linear-gradient(135deg, #c82333, #bd2130);
  transform: translateY(-1px);
}

.btn-small {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
}

/* 结果消息 */
.result-message {
  padding: 1rem;
  border-radius: 8px;
  margin-top: 1rem;
  font-weight: 500;
}

.result-message.success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.result-message.error {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

/* 用户代码列表 */
.user-code-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 8px;
  margin-bottom: 0.5rem;
  border: 1px solid #e9ecef;
}

.user-code-item .code {
  font-family: 'Courier New', monospace;
  font-weight: bold;
  color: #007bff;
}

.user-code-item .status {
  color: #6c757d;
  font-size: 0.9rem;
}

/* Code column with note support */
.code-container {
  display: flex;
  flex-direction: column;
  gap: 0px;
  padding: 0;
  line-height: 1;
}

.code-text {
  font-weight: 600;
  color: #374151;
  line-height: 1.1;
  margin: 0;
  font-size: 15px; /* 调大代码字体 */
}

.code-note {
  font-size: 0.6rem;
  color: #6c757d;
  font-style: italic;
  line-height: 0.9;
  margin: 0;
  padding: 0;
  display: block;
}

/* Special styling for granted/completed codes */
tr:has(.status-granted) .next-check {
  color: #28a745;
  font-weight: 500;
}

tr:has(.status-granted) .code-note {
  color: #28a745;
}

.user-code-item .note {
  color: #6c757d;
  font-size: 0.85rem;
  font-style: italic;
  margin-left: 0.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
  header {
    padding: 20px 16px;
  }
  
  h1 {
    font-size: 22px;
  }
  .subtitle {
    font-size: 14px;
  }
  main {
    padding: 16px;
  }
  .toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 12px 16px;
  }
  
  .toolbar-left {
    flex-direction: column;
    gap: 12px;
  }
  
  .management-panel {
    margin-left: 0;
    justify-content: center;
    order: 3;
  }
  
  .status-info {
    order: -1;
    text-align: center;
  }
  #refresh {
    order: 1;
  }
  #filter {
    min-width: auto;
    order: 2;
  }
  .table-container {
    margin-left: -16px;
    margin-right: -16px;
    border-radius: 0;
    box-shadow: none;
    border-top: 1px solid #e5e7eb;
    border-bottom: 1px solid #e5e7eb;
  }
  .table-container table {
    border-radius: 0;
    min-width: 700px; /* Ensure horizontal scroll */
  }
  th, td {
    padding: 10px 12px;
    font-size: 13px;
  }
  th {
    font-size: 14px;
  }
  .sort-arrow {
    font-size: 12px;
  }
  .status-tag {
    font-size: 12px; /* 移动端状态标签也调大 */
    padding: 3px 8px;
  }
  .footer-main {
    text-align: center;
    margin: 12px 0;
    font-size: 14px;
  }
  footer {
    padding: 16px;
  }
  .footer {
    font-size: 11px;
  }
  .footer-line {
    margin: 2px 0;
  }
  
  .modal-content {
    margin: 10% auto;
    padding: 1.5rem;
    width: 95%;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .user-code-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .captcha-question {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 20px;
  }
  .subtitle {
    font-size: 13px;
    line-height: 1.4;
  }
  main {
    padding: 12px;
  }
  .toolbar {
    padding: 10px 12px;
  }
  .table-container {
    margin-left: -12px;
    margin-right: -12px;
  }
  .table-container table {
    min-width: 650px; /* Ensure Code and Status are always visible */
  }
  th, td {
    padding: 8px 10px;
    font-size: 12px;
  }
  th:nth-child(1), td:nth-child(1) { /* Code - priority */
    width: auto;
    min-width: 120px; /* 减少Code列宽度 */
    max-width: 160px;
  }
  th:nth-child(2), td:nth-child(2) { /* Status - priority */
    width: auto;
    min-width: 100px; /* 减少Status列宽度 */
    max-width: 140px;
  }
  th:nth-child(3), td:nth-child(3) { /* Check Status - 确保时间显示完整 */
    width: auto;
    min-width: 130px; /* 增加最小宽度以显示完整时间 */
    max-width: 160px;
  }
  th:nth-child(4), td:nth-child(4) { /* Last Changed */
    width: auto;
    min-width: 110px; /* 稍微增加Last Changed宽度 */
    max-width: 140px;
  }
}

/* Enhanced time display styles */
.time-cell {
  padding: 4px 6px !important;
  vertical-align: middle;
}

.time-container {
  display: flex;
  flex-direction: column;
  gap: 1px;
  font-size: 11px;
  line-height: 1.1;
}

.last-checked {
  color: #4b5563;
  font-weight: 500;
  font-size: 13px;
}

.next-check {
  color: #059669;
  font-weight: 600;
  font-size: 12px;
}

.next-check.overdue {
  color: #dc2626;
  font-weight: 700;
}

/* Muted style for "Not scheduled" to reduce prominence */
.next-check.muted {
  color: #6b7280; /* neutral gray */
  font-weight: 500;
  opacity: 0.85;
}

/* Ensure muted state stays muted even for granted rows */
tr:has(.status-granted) .next-check.muted {
  color: #6b7280;
  font-weight: 500;
  opacity: 0.85;
}

/* Last Changed column styling - matching Check Status */
.last-changed-cell {
  padding: 4px 6px !important;
  vertical-align: middle;
  color: #4b5563;
  font-weight: 500;
  font-size: 15px; /* 调大字体，因为只有一行 */
}

/* Responsive adjustments for time display */
@media (max-width: 768px) {
  .time-container {
    font-size: 10px;
    gap: 0px;
  }
  
  .last-checked {
    font-size: 12px; /* 稍微调大移动端时间字体 */
  }
  
  .next-check {
    font-size: 11px; /* 稍微调大移动端时间字体 */
  }
  
  .time-cell {
    padding: 3px 4px !important;
    min-width: 85px;
  }
  
  .last-changed-cell {
    font-size: 14px; /* 移动端也调大 */
    padding: 3px 4px !important;
  }
  
  .code-text {
    font-size: 14px; /* 移动端稍微小一点 */
  }
}

/* Update column width for the new time display */
th:nth-child(3), td:nth-child(3) { /* Check Status */
  width: auto;
  min-width: 140px;
  max-width: 180px;
}

@media (max-width: 768px) {
  th:nth-child(3), td:nth-child(3) { /* Check Status on mobile - 确保时间显示完整 */
    min-width: 130px; /* 增加最小宽度 */
    max-width: 150px;
  }
}