:root {
  --primary: #409eff;
  --text: #303133;
  --text-light: #606266;
  --text-muted: #909399;
  --border: #ebeef5;
  --bg: #f5f7fa;
  --white: #fff;
  --pay-bg: #fdf6ec;
  --danger: #f56c6c;
  --success: #67c23a;
  --glass-bg: rgba(255, 255, 255, 0.22);
  --glass-bg-strong: rgba(255, 255, 255, 0.32);
  --glass-blur: blur(10px) saturate(1.1);
}

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

body {
  font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  line-height: 1.5;
}

.bg-fixed {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(160deg, #eef5ff 0%, #f8f0ff 50%, #fff5f8 100%);
  background-size: cover;
  background-position: center;
}

.loading {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-muted);
  font-size: 14px;
}

.hidden {
  display: none !important;
}

#song-list-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 32px 16px 60px;
  max-width: 1280px;
  margin: 0 auto;
}

.top-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 96%;
  max-width: 1180px;
  margin: 28px 0 0;
}

@media (min-width: 768px) {
  .top-links {
    width: 92%;
  }
}

.top-links .tool-btn {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 600;
  background: linear-gradient(120deg, #d500f9 0%, #ff1744 42%, #2979ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: 1px solid rgba(213, 0, 249, 0.45);
  box-shadow: 0 4px 16px rgba(213, 0, 249, 0.22);
  filter: drop-shadow(0 1px 6px rgba(213, 0, 249, 0.35));
}

.top-links .tool-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(255, 255, 255, 0.3);
  z-index: -1;
}

.top-links .tool-btn:hover {
  background: linear-gradient(120deg, #e040fb 0%, #ff5252 42%, #448aff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  border-color: rgba(255, 23, 68, 0.55);
  box-shadow: 0 4px 20px rgba(255, 23, 68, 0.28);
  filter: drop-shadow(0 2px 10px rgba(213, 0, 249, 0.5));
}

.tool-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  width: 96%;
  max-width: 1180px;
  margin: 8px 0 16px;
}

@media (min-width: 768px) {
  .tool-bar {
    width: 92%;
    flex-wrap: nowrap;
  }
}

.cell-link {
  color: var(--primary);
  text-decoration: none;
}

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

.face {
  width: 128px;
  height: 128px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid #b400ff;
  box-shadow: 0 0 24px rgba(191, 128, 249, 0.5);
  margin: 20px auto;
}

@media (min-width: 1000px) {
  .face {
    width: 200px;
    height: 200px;
  }
}

.face-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #8ec5fc, #e0c3fc);
  color: #fff;
  font-size: 48px;
  font-weight: 300;
}

.page-title {
  font-weight: 600;
  font-size: 28px;
  text-align: center;
  margin-top: 8px;
  white-space: pre-line;
  background: linear-gradient(120deg, #d500f9 0%, #ff1744 42%, #2979ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 2px 10px rgba(213, 0, 249, 0.45));
}

.page-subtitle {
  font-weight: 300;
  font-size: 15px;
  text-align: center;
  color: var(--text-light);
  margin-top: -4px;
  white-space: pre-line;
  text-shadow: 0 1px 10px rgba(255, 255, 255, 0.8);
}

.page-caption-wrap {
  width: 100%;
  padding: 16px 16px 0;
  margin: 0;
}

.page-caption {
  display: inline-block;
  margin: 0;
  max-width: min(340px, calc(100vw - 32px));
  padding: 8px 14px 8px 12px;
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-left: 3px solid rgba(213, 0, 249, 0.5);
  border-radius: 0 10px 10px 0;
  color: #4a3f5c;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.55;
  white-space: pre-line;
  text-align: left;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 18px rgba(80, 60, 120, 0.08);
}

@media (min-width: 768px) {
  .page-caption-wrap {
    padding: 20px 24px 0;
  }

  .page-caption {
    font-size: 14px;
  }
}

.tool-select,
.tool-input {
  flex: 1;
  min-width: 120px;
  height: 36px;
  padding: 0 14px;
  border: none;
  border-radius: 18px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--text);
  font-size: 14px;
  outline: none;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.tool-select:focus,
.tool-input:focus {
  background: var(--glass-bg-strong);
  box-shadow: 0 4px 24px rgba(64, 158, 255, 0.12);
}

.tool-btn {
  height: 36px;
  padding: 0 18px;
  border: none;
  border-radius: 18px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.tool-btn:hover {
  color: var(--primary);
  background: var(--glass-bg-strong);
  box-shadow: 0 4px 24px rgba(64, 158, 255, 0.1);
}

.table-wrap {
  width: 96%;
  max-width: 1180px;
}

@media (min-width: 768px) {
  .table-wrap {
    width: 92%;
  }
}

.song-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
  border: none;
}

.song-table tbody tr {
  cursor: pointer;
  transition: background 0.2s ease;
}

.song-table tbody tr.row-highlight {
  background: rgba(255, 255, 255, 0.28);
}

.song-table thead {
  background: transparent;
}

.song-table th,
.song-table td {
  padding: 12px 14px;
  text-align: left;
  font-size: 14px;
  border: none;
  text-shadow: 0 1px 8px rgba(255, 255, 255, 0.65);
}

.song-table th {
  color: var(--text-light);
  font-weight: 500;
  pointer-events: none;
}

.song-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.18);
}

.song-table tbody tr:last-child td {
  border-bottom: none;
}

.table-empty {
  text-align: center;
  padding: 32px;
  color: var(--text-muted);
  font-size: 14px;
}

.pagination {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin-top: 16px;
  flex-wrap: wrap;
}

.page-btn {
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  border: none;
  border-radius: 8px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.page-btn:hover {
  color: var(--primary);
  background: var(--glass-bg-strong);
}

.page-btn.active {
  background: rgba(64, 158, 255, 0.75);
  color: #fff;
  box-shadow: 0 2px 12px rgba(64, 158, 255, 0.2);
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-jump {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 4px;
}

.page-jump-label {
  font-size: 13px;
  color: var(--text-light);
}

.page-jump-input {
  width: 52px;
  height: 32px;
  padding: 0 8px;
  border: none;
  border-radius: 8px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--text);
  font-size: 13px;
  text-align: center;
  outline: none;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.page-jump-input:focus {
  background: var(--glass-bg-strong);
  box-shadow: 0 2px 12px rgba(64, 158, 255, 0.12);
}

.page-jump-input::-webkit-outer-spin-button,
.page-jump-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.page-jump-input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}

.page-jump-btn {
  min-width: 48px;
}

.table-loading td {
  text-align: center;
  color: var(--text-muted);
  padding: 40px 14px;
  font-size: 14px;
}

.sum-text {
  margin-top: 16px;
  text-align: center;
  font-size: 14px;
  color: var(--text-light);
  text-shadow: 0 1px 10px rgba(255, 255, 255, 0.8);
}

.site-footer {
  text-align: center;
  padding: 20px;
  font-size: 13px;
  color: var(--text-muted);
  text-shadow: 0 1px 8px rgba(255, 255, 255, 0.75);
}

.site-footer a {
  color: var(--primary);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

.site-footer span {
  margin: 0 8px;
}

.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border: 1px solid #e1f3d8;
  color: var(--text);
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

.toast.error {
  border-color: #fde2e2;
  color: var(--danger);
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #f6f6f6;
}

::-webkit-scrollbar-thumb {
  background: #c0c4cc;
  border-radius: 8px;
}

/* Admin */
.admin-body {
  background: var(--bg);
}

.admin-header {
  background: linear-gradient(120deg, #8ec5fc, #e0c3fc);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.admin-header h1 {
  font-size: 18px;
  font-weight: 500;
  color: #fff;
}

.admin-header nav a {
  color: #fff;
  text-decoration: none;
  margin-left: 16px;
  font-size: 14px;
  opacity: 0.9;
}

.admin-header nav a:hover {
  opacity: 1;
  text-decoration: underline;
}

.admin-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
}

.admin-section {
  background: var(--white);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.admin-section h2 {
  font-size: 16px;
  color: var(--primary);
  margin-bottom: 16px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.section-head h2 {
  margin-bottom: 0;
}

.settings-form {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

.settings-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: var(--text-light);
}

.settings-form input,
.settings-form select,
.settings-form textarea,
.add-form input {
  padding: 0 10px;
  border: 1px solid #dcdfe6;
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
}

.settings-form input,
.settings-form select,
.add-form input {
  height: 34px;
}

.settings-form textarea {
  min-height: 68px;
  padding: 8px 10px;
  line-height: 1.5;
  resize: vertical;
}

.settings-form .settings-wide {
  grid-column: 1 / -1;
}

.add-form {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 8px;
  margin-bottom: 16px;
  padding: 12px;
  background: #fafafa;
  border-radius: 6px;
}

.batch-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding: 10px 12px;
  background: #ecf5ff;
  border: 1px solid #d9ecff;
  border-radius: 6px;
  font-size: 14px;
}

.admin-tool-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.admin-tool-bar .tool-select,
.admin-tool-bar .tool-input {
  flex: 1;
  min-width: 140px;
  height: 36px;
  padding: 0 14px;
  border: 1px solid #dcdfe6;
  border-radius: 18px;
  background: var(--white);
  color: var(--text);
  font-size: 14px;
  outline: none;
}

.admin-tool-bar .tool-select:focus,
.admin-tool-bar .tool-input:focus {
  border-color: var(--primary);
}

.filter-sum {
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--text-light);
}

.table-empty-admin {
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  font-size: 14px;
}

.table-scroll {
  overflow-x: auto;
  max-height: 70vh;
  overflow-y: auto;
}

.col-check {
  width: 36px;
  text-align: center;
}

.admin-table tr.edit-row td {
  background: #f5f7fa;
  padding: 14px 12px;
}

.edit-form {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
  align-items: center;
}

.edit-form input {
  height: 34px;
  padding: 0 10px;
  border: 1px solid #dcdfe6;
  border-radius: 4px;
  font-size: 14px;
}

.edit-actions {
  display: flex;
  gap: 8px;
  grid-column: 1 / -1;
}

.btn-sm {
  height: 28px;
  padding: 0 10px;
  font-size: 12px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.admin-table th,
.admin-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.admin-table th {
  background: #fafafa;
  color: var(--text-light);
  font-weight: 500;
}

.admin-table tr.disabled {
  opacity: 0.45;
}

.btn {
  height: 32px;
  padding: 0 14px;
  border: 1px solid #dcdfe6;
  border-radius: 4px;
  background: var(--white);
  font-size: 13px;
  cursor: pointer;
  color: var(--text);
}

.btn:hover {
  color: var(--primary);
  border-color: #c6e2ff;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.btn-primary:hover {
  background: #66b1ff;
  color: #fff;
}

.btn-danger {
  color: var(--danger);
  border-color: #fbc4c4;
}

.btn-danger:hover {
  background: #fef0f0;
}

.btn-ghost {
  color: var(--text-light);
}

.btn-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.status-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
}

.status-pending { background: #ecf5ff; color: #409eff; }
.status-playing { background: #fdf6ec; color: #e6a23c; }
.status-done { background: #f0f9eb; color: #67c23a; }
.status-skipped { background: #f4f4f5; color: #909399; }

@media (max-width: 600px) {
  .song-table th:nth-child(4),
  .song-table td:nth-child(4),
  .song-table th:nth-child(5),
  .song-table td:nth-child(5),
  .song-table th:nth-child(6),
  .song-table td:nth-child(6) {
    display: none;
  }
}