:root {
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.85);
  --glass-card: rgba(255, 255, 255, 0.58);
  --glass-card-hover: rgba(255, 255, 255, 0.92);
  --text-main: #1d1d1f;
  --text-secondary: #6e6e73;
  --accent-color: #0071e3;
  --accent-gradient: linear-gradient(135deg, #0071e3 0%, #4facfe 100%);
  --accent-glow: rgba(0, 113, 227, 0.25);
  --danger-color: #ff3b30;
  --shadow-float: 0 16px 36px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0,0,0,0.02);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Noto Sans SC", sans-serif;
  background: #eef2f9;
  background-image: 
    radial-gradient(at 10% 10%, rgba(130, 180, 255, 0.28) 0px, transparent 50%),
    radial-gradient(at 90% 15%, rgba(210, 160, 255, 0.22) 0px, transparent 50%),
    radial-gradient(at 50% 90%, rgba(150, 230, 245, 0.25) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

header {
  height: 60px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  background: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.12rem;
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--accent-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.header-actions {
  display: flex;
  gap: 10px;
}

.app-workspace {
  display: flex;
  flex: 1;
  height: calc(100vh - 60px);
  overflow: hidden;
}

.sidebar {
  width: 480px;
  min-width: 460px;
  height: 100%;
  background: var(--glass-bg);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  z-index: 20;
}

.sidebar-tabs {
  display: flex;
  padding: 8px 10px;
  background: rgba(0, 0, 0, 0.03);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  gap: 4px;
}

.tab-btn {
  flex: 1;
  padding: 8px 2px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  white-space: nowrap;
  transition: var(--transition);
}

.tab-btn.active {
  background: #ffffff;
  color: var(--accent-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  font-weight: 600;
}

.tab-content-container {
  flex: 1;
  overflow-y: auto;
  padding: 16px 16px 40px;
}

.tab-pane {
  display: none;
}
.tab-pane.active {
  display: block;
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(3px); }
  to { opacity: 1; transform: translateY(0); }
}

.control-card {
  background: var(--glass-card);
  backdrop-filter: blur(15px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 15px;
  margin-bottom: 14px;
  transition: var(--transition);
}
.control-card:hover {
  background: var(--glass-card-hover);
}

.card-title {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.chart-type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.chart-type-btn {
  padding: 9px 4px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  font-size: 0.76rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition);
}

.chart-type-btn.active {
  background: var(--accent-color);
  color: #ffffff;
  border-color: var(--accent-color);
  box-shadow: 0 4px 12px var(--accent-glow);
}

.form-group {
  margin-bottom: 11px;
}
.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

.form-row {
  display: flex;
  gap: 8px;
  align-items: center;
}
.form-row > * {
  flex: 1;
}

input[type="text"],
input[type="number"],
select {
  width: 100%;
  padding: 7px 10px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--text-main);
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}
input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
  background: #fff;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.switch-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 3px 0;
}

.switch {
  position: relative;
  display: inline-block;
  width: 38px;
  height: 22px;
}
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(0, 0, 0, 0.15);
  transition: 0.25s;
  border-radius: 34px;
}
.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.25s;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}
input:checked + .slider { background: var(--accent-color); }
input:checked + .slider:before { transform: translateX(16px); }

.mode-selector-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mode-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}
.mode-item:hover {
  background: #ffffff;
}
.mode-item input[type="radio"] {
  margin-top: 3px;
  accent-color: var(--accent-color);
  cursor: pointer;
}
.mode-item.active {
  background: #ffffff;
  border-color: var(--accent-color);
  box-shadow: 0 2px 10px rgba(0, 113, 227, 0.12);
}
.mode-card-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.mode-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}
.mode-desc {
  font-size: 0.71rem;
  color: var(--text-secondary);
  line-height: 1.35;
}

.table-container {
  position: relative;
  overflow-x: auto;
  overflow-y: auto;
  max-height: 380px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.02);
}

.table-container::-webkit-scrollbar {
  height: 6px;
  width: 6px;
}
.table-container::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
}
.table-container::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.35);
}
.table-container::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.03);
}

.data-table {
  width: max-content;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.8rem;
}

.data-table th, .data-table td {
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  border-right: 1px solid rgba(0, 0, 0, 0.08);
  padding: 4px 6px;
  text-align: left;
  background: #ffffff;
  white-space: nowrap;
  width: 1%;
}

.data-table th {
  background: #f4f7fb;
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 10;
}

.data-table th.col-sticky-first,
.data-table td.col-sticky-first {
  position: sticky;
  left: 0;
  z-index: 8;
  background: #f9fbfe;
  box-shadow: 2px 0 6px rgba(0, 0, 0, 0.05);
}
.data-table th.col-sticky-first {
  z-index: 15;
  background: #edf2f9;
}

.data-table th.col-sticky-last,
.data-table td.col-sticky-last {
  position: sticky;
  right: 0;
  z-index: 8;
  background: #f9fbfe;
  text-align: center;
  width: 36px;
  min-width: 36px;
  box-shadow: -2px 0 6px rgba(0, 0, 0, 0.05);
  padding: 4px;
}
.data-table th.col-sticky-last {
  z-index: 15;
  background: #edf2f9;
}

.th-cell-wrapper {
  display: flex;
  align-items: center;
  gap: 4px;
  width: max-content;
}

.th-cell-wrapper input {
  font-weight: 600;
  color: var(--text-main);
}

.data-table input.content-fit-input {
  width: auto;
  min-width: 38px;
  field-sizing: content;
  border: 1px solid transparent;
  background: transparent;
  padding: 4px 6px;
  font-size: 0.8rem;
  border-radius: 4px;
  font-family: inherit;
  transition: background 0.2s, border-color 0.2s;
}
.data-table input.content-fit-input:focus {
  background: #ffffff;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.btn-cell-del {
  border: none;
  background: rgba(255, 59, 48, 0.1);
  color: var(--danger-color);
  width: 18px;
  height: 18px;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  transition: var(--transition);
  flex-shrink: 0;
}
.btn-cell-del:hover {
  background: var(--danger-color);
  color: #fff;
}

.table-tools {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.mini-btn {
  padding: 6px 12px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: rgba(255, 255, 255, 0.9);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  font-weight: 500;
  transition: var(--transition);
}
.mini-btn:hover {
  background: #ffffff;
  border-color: var(--accent-color);
  color: var(--accent-color);
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.palette-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.palette-item {
  padding: 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.65);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  transition: var(--transition);
}
.palette-item.active {
  border-color: var(--accent-color);
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 113, 227, 0.15);
}
.palette-name { font-size: 0.74rem; font-weight: 600; }
.palette-colors { display: flex; height: 10px; border-radius: 3px; overflow: hidden; }
.palette-color-block { flex: 1; height: 100%; }

.color-pickers-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}
.color-picker-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.7);
  padding: 3px 6px;
  border-radius: 6px;
  border: 1px solid rgba(0, 0, 0, 0.08);
}
.color-picker-badge input[type="color"] {
  -webkit-appearance: none;
  border: none;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  cursor: pointer;
  background: transparent;
}

/* 右侧主预览舞台 */
.preview-stage {
  flex: 1;
  display: flex;
  padding: 30px;
  overflow: auto;
  position: relative;
}

.stage-canvas-wrapper {
  margin: auto;
  min-width: min-content;
  min-height: min-content;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
}

.chart-board {
  width: 860px;
  height: 520px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-float);
  border: 1px solid var(--glass-border);
  position: relative;
  background: #ffffff;
  transition: background 0.3s ease;
  flex-shrink: 0;
}

.chart-board.bg-transparent-pattern {
  background-image: linear-gradient(45deg, #f0f0f0 25%, transparent 25%), 
                    linear-gradient(-45deg, #f0f0f0 25%, transparent 25%), 
                    linear-gradient(45deg, transparent 75%, #f0f0f0 75%), 
                    linear-gradient(-45deg, transparent 75%, #f0f0f0 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
}

#echartsContainer {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.btn {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px var(--accent-glow);
}
.btn-secondary {
  background: rgba(255, 255, 255, 0.85);
  color: var(--text-main);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.ratio-group {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}
.ratio-btn {
  padding: 6px 2px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 6px;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
}
.ratio-btn.active, .ratio-btn:hover {
  background: #ffffff;
  color: var(--accent-color);
  border-color: var(--accent-color);
}

/* 宽屏全景表格编辑模态弹窗 */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal-overlay.show {
  display: flex;
  animation: fadeIn 0.25s ease;
}

.modal-card {
  width: 100%;
  max-width: 980px;
  max-height: 85vh;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(25px);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.8);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  flex: 1;
  padding: 20px;
  overflow: auto;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid rgba(0,0,0,0.08);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  background: rgba(0,0,0,0.02);
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: rgba(29, 29, 31, 0.88);
  backdrop-filter: blur(20px);
  color: white;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  transform: translateY(100px);
  opacity: 0;
  transition: var(--transition);
  z-index: 2000;
}
.toast.show {
  transform: translateY(0);
  opacity: 1;
}