/* =============================================================================
 * style.css — Industrialist 工业产线配平计算器样式
 * 深色工业科技主题；桌面端与移动端响应式。
 * 设计灵感来源：UIverse Galaxy (MIT License, https://github.com/uiverse-io/galaxy)
 * 配色约定：基础原料=绿色，中间产物=橙色，流体=蓝色，最终产物=金色，
 *           电力=琥珀色，物流告警=红色。
 * ============================================================================= */

:root {
  /* 背景层级 */
  --bg: #0a0e17;
  --bg-gradient: radial-gradient(ellipse at top, #111827 0%, #0a0e17 60%);
  --bg-soft: #111827;
  --panel: #1a2332;
  --panel-2: #1f2a3d;
  --panel-hover: #243044;
  --border: #2a3a52;
  --border-light: #34465f;

  /* 文字 */
  --text: #e8edf5;
  --text-dim: #8896ab;
  --text-faint: #5a687d;

  /* 强调色 - 工业青 */
  --accent: #00d4ff;
  --accent-dim: #00a8cc;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --accent-glow-strong: rgba(0, 212, 255, 0.3);

  /* 语义色 */
  --green: #22c55e;
  --green-dim: #16a34a;
  --orange: #f59e0b;
  --orange-dim: #d97706;
  --blue: #3b82f6;
  --gold: #eab308;
  --red: #ef4444;
  --red-dim: #dc2626;
  --amber: #f59e0b;
  --purple: #a855f7;

  /* 形状 */
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px var(--accent-glow);

  /* 动效 */
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

/* 微妙网格纹理叠加 */
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* ---------------- 顶部 ---------------- */
.app-header {
  background: linear-gradient(135deg, rgba(17,24,39,0.95) 0%, rgba(26,35,50,0.95) 100%);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  padding: 16px 20px;
  position: relative;
  z-index: 1;
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.app-header::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  justify-content: space-between;
}
.app-header h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.data-version {
  color: var(--text-dim);
  font-size: 12px;
  background: var(--panel);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
}
.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* ---------------- 按钮 ---------------- */
.btn {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  width: 100%;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: "";
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.05), transparent);
  transition: left 0.5s;
}
.btn:hover::before { left: 100%; }
.btn:hover {
  border-color: var(--accent);
  background: var(--panel-hover);
  box-shadow: 0 0 12px var(--accent-glow);
  transform: translateY(-1px);
}
.btn:active { transform: translateY(0); }
.btn.primary {
  background: linear-gradient(135deg, var(--accent-dim), var(--accent));
  border-color: var(--accent);
  color: #0a0e17;
  font-weight: 600;
}
.btn.primary:hover {
  background: linear-gradient(135deg, var(--accent), #33ddff);
  box-shadow: 0 0 20px var(--accent-glow-strong), 0 4px 12px rgba(0,212,255,0.2);
}
.btn.ghost {
  width: auto;
  padding: 6px 14px;
  font-size: 13px;
  background: transparent;
  border-color: var(--border);
  color: var(--text-dim);
}
.btn.ghost:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-glow);
}

/* ---------------- Tab 栏 ---------------- */
.tab-bar {
  display: flex;
  gap: 2px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 20px 0;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  color: var(--text-dim);
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}
.tab-btn::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: all var(--transition);
  transform: translateX(-50%);
}
.tab-btn:hover {
  color: var(--text);
  background: var(--bg-soft);
}
.tab-btn:hover::after { width: 60%; }
.tab-btn.active {
  color: var(--accent);
  background: var(--bg-soft);
  border-color: var(--border);
  border-bottom-color: var(--bg-soft);
  font-weight: 600;
}
.tab-btn.active::after { width: 80%; box-shadow: 0 0 8px var(--accent); }

/* ---------------- 主体 ---------------- */
.app-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 4px 20px 40px;
  position: relative;
  z-index: 1;
}
.tab-panel { display: none; animation: fadeIn 0.3s ease; }
.tab-panel.active { display: block; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------------- 卡片 ---------------- */
.card-block {
  background: linear-gradient(135deg, rgba(26,35,50,0.8), rgba(17,24,39,0.9));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin: 16px 0;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition);
}
.card-block:hover { box-shadow: var(--shadow-lg), 0 0 0 1px var(--border-light); }
.card-block h2 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.card-block h3 {
  margin: 24px 0 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-block h3::before {
  content: "";
  width: 3px;
  height: 14px;
  background: var(--accent);
  border-radius: 2px;
}
.hint { color: var(--text-dim); font-size: 13px; margin: 0 0 16px; }

/* ---------------- 表单 ---------------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 8px;
}
.transport-grid { margin-top: 8px; }
.field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.field input, .field select {
  width: 100%;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 14px;
  transition: all var(--transition);
}
.field input:hover, .field select:hover { border-color: var(--border-light); }
.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--panel-2);
}
.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238896ab' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}
.inline { display: flex; gap: 8px; }
.inline input { flex: 1; }
.inline select { width: auto; min-width: 110px; }
.checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
}
.checkbox input {
  width: auto;
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* ---------------- 汇总卡片 ---------------- */
.summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin: 16px 0;
}
.card {
  background: linear-gradient(135deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0.6;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-md);
}
.card-label {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.card-value {
  font-size: 22px;
  font-weight: 700;
  margin-top: 6px;
  color: var(--text);
}
.card-value .dim { font-size: 12px; font-weight: 400; color: var(--text-dim); }
.card-value.deficit { color: var(--red); }
.card-value.surplus { color: var(--green); }

/* ---------------- 表格 ---------------- */
.table-wrap {
  overflow-x: auto;
  margin: 10px 0 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.result-table, .data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 640px;
}
.result-table th, .result-table td,
.data-table th, .data-table td {
  border: 1px solid var(--border);
  padding: 9px 12px;
  text-align: left;
  white-space: nowrap;
}
.result-table thead th, .data-table thead th {
  background: var(--panel-2);
  color: var(--accent);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: sticky;
  top: 0;
}
.result-table tbody tr,
.data-table tbody tr {
  transition: background var(--transition);
}
.result-table tbody tr:nth-child(even),
.data-table tbody tr:nth-child(even) { background: rgba(255,255,255,0.015); }
.result-table tbody tr:hover,
.data-table tbody tr:hover { background: var(--accent-glow); }

td.surplus { color: var(--green); font-weight: 600; }
td.deficit { color: var(--red); font-weight: 600; }
td.logi-warn { color: var(--red); font-weight: 700; }
.dim { color: var(--text-dim); }

/* ---------------- 徽章 ---------------- */
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
  border: 1px solid transparent;
  vertical-align: middle;
  letter-spacing: 0.3px;
}
.badge.raw { color: var(--green); border-color: var(--green); background: rgba(34,197,94,0.1); }
.badge.inter { color: var(--orange); border-color: var(--orange); background: rgba(245,158,11,0.1); }
.badge.ok { color: var(--green); border-color: var(--green); background: rgba(34,197,94,0.1); }
.badge.warn { color: var(--orange); border-color: var(--orange); background: rgba(245,158,11,0.1); }

/* ---------------- 覆盖台数输入 ---------------- */
.override-input {
  width: 74px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 8px;
  font-size: 13px;
  transition: all var(--transition);
}
.override-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

/* ---------------- 提示与警告 ---------------- */
.notice {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin: 14px 0;
  font-size: 13px;
  color: var(--text);
  box-shadow: var(--shadow-sm);
}
.notice.error {
  border-left-color: var(--red);
  color: #fca5a5;
  background: rgba(239,68,68,0.05);
}
.notice.target-note {
  border-left-color: var(--gold);
  background: rgba(234,179,8,0.05);
}
.warnings { margin: 14px 0; }
.warn-item {
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.3);
  color: #fca5a5;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin: 8px 0;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.warn-item::before { content: "⚠"; flex-shrink: 0; }

/* ---------------- 树形生产链图 ---------------- */
.tree { font-size: 13px; }
.tree-node {
  border: 1px solid var(--border);
  border-left: 4px solid var(--orange);
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--panel), rgba(26,35,50,0.6));
  padding: 10px 14px;
  margin: 6px 0;
  transition: all var(--transition);
}
.tree-node:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-sm);
}
.tree-node.raw { border-left-color: var(--green); }
.tree-node.fluid { border-left-color: var(--blue); }
.tree-node-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}
.tree-name { font-weight: 700; color: var(--text); }
.tree-rate { color: var(--text-dim); font-family: monospace; }
.tree-meta { color: var(--text-dim); font-size: 12px; margin-top: 4px; }
.tree-children {
  margin-left: 20px;
  border-left: 1px dashed var(--border);
  padding-left: 16px;
}
.tree-edge { color: var(--text-dim); font-size: 12px; margin: 6px 0 3px; }

/* 树形图折叠 */
.tree-node-head { cursor: default; user-select: none; }
.tree-node-head[onclick] { cursor: pointer; }
.tree-node-head[onclick]:hover { background: var(--accent-glow); border-radius: 4px; }
.tree-toggle {
  display: inline-block;
  width: 16px;
  text-align: center;
  font-size: 10px;
  color: var(--accent);
  transition: transform var(--transition);
  margin-right: 4px;
}
.tree-toggle.leaf { color: var(--text-faint); }
.tree-node.collapsed > .tree-node-head .tree-toggle { transform: rotate(-90deg); }
.tree-node.collapsed > .tree-children { display: none; }
.tree-expand-all, .tree-collapse-all {
  font-size: 11px;
  padding: 3px 10px;
  margin-left: 8px;
  float: right;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition);
}
.tree-expand-all:hover, .tree-collapse-all:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------------- 电力换算 ---------------- */
.conv-big {
  font-size: 28px;
  margin: 16px 0 8px;
  font-weight: 700;
}
.conv-big b { color: var(--gold); }
#conv-detail p { font-size: 14px; margin: 8px 0; }
.conv-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-top: 10px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.conv-table th, .conv-table td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}
.conv-table th {
  background: var(--panel-2);
  color: var(--accent);
  font-weight: 600;
}

/* ---------------- 数据浏览 ---------------- */
.search-input {
  width: 100%;
  max-width: 420px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 14px;
  margin-bottom: 8px;
  transition: all var(--transition);
}
.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.note-text { font-size: 12px; margin-top: 10px; color: var(--text-dim); }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: #33ddff; text-decoration: underline; }

/* ---------------- 页脚 ---------------- */
.app-footer {
  border-top: 1px solid var(--border);
  padding: 16px 20px;
  color: var(--text-dim);
  font-size: 12px;
  text-align: center;
  position: relative;
  z-index: 1;
}

/* ---------------- 弹窗 ---------------- */
.modal-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  animation: fadeIn 0.2s ease;
}
.modal-box {
  background: linear-gradient(135deg, var(--panel), var(--bg-soft));
  border: 1px solid var(--border);
  padding: 24px;
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg), 0 0 40px var(--accent-glow);
  animation: modalIn 0.3s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-box h3 { margin-top: 0; color: var(--text); }
.modal-box .hint { color: var(--text-dim); font-size: 13px; margin-bottom: 12px; }
.modal-box textarea {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px;
  transition: border-color var(--transition);
}
.modal-box textarea:focus { outline: none; border-color: var(--accent); }

/* ---------------- 缺口追踪 ---------------- */
.trace-detail { margin-top: 10px; padding: 10px; background: var(--panel); border-radius: var(--radius-sm); }
.row-deficit { background: rgba(239,68,68,0.08) !important; }
.row-surplus { background: rgba(34,197,94,0.06) !important; }
.trace-btn {
  white-space: nowrap;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  transition: all var(--transition);
}
.trace-btn:hover { color: var(--accent); border-color: var(--accent); }

/* ---------------- 加载动画 ---------------- */
.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 20px;
  gap: 16px;
}
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  box-shadow: 0 0 12px var(--accent-glow);
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { color: var(--text-dim); font-size: 14px; }

/* ---------------- 次优配方方案 ---------------- */
.alt-recipes {
  margin: 14px 0;
  padding: 14px 18px;
  background: rgba(0,212,255,0.05);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--radius);
}
.alt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 10px;
}
.alt-title { font-weight: 600; font-size: 14px; color: var(--accent); }
.alt-buttons { display: flex; gap: 6px; flex-wrap: wrap; }
.alt-btn {
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text-dim);
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition);
}
.alt-btn:hover { background: var(--panel-hover); color: var(--text); border-color: var(--accent); }
.alt-btn.active {
  background: linear-gradient(135deg, var(--accent-dim), var(--accent));
  color: #0a0e17;
  border-color: var(--accent);
  font-weight: 600;
  box-shadow: 0 0 12px var(--accent-glow);
}
.alt-metrics {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-dim);
}
.alt-metrics span b { color: var(--accent); }

/* ---------------- 模式开关 ---------------- */
.checkbox input[type="checkbox"]#mode-switch {
  accent-color: var(--accent);
}

/* ---------------- 结果操作栏 ---------------- */
.result-actions {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  text-align: right;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  flex-wrap: wrap;
}
.result-actions .btn { width: auto; }

/* ---------------- 版本徽章 ---------------- */
.version-badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-right: 8px;
  vertical-align: middle;
  cursor: default;
  text-transform: uppercase;
}
.ver-alpha {
  background: linear-gradient(135deg, var(--orange-dim), var(--orange));
  color: #0a0e17;
  box-shadow: 0 0 12px rgba(245,158,11,0.3);
}
.ver-beta {
  background: linear-gradient(135deg, #2563eb, var(--blue));
  color: #fff;
  box-shadow: 0 0 12px rgba(59,130,246,0.3);
}
.ver-release {
  background: linear-gradient(135deg, var(--green-dim), var(--green));
  color: #0a0e17;
  box-shadow: 0 0 12px rgba(34,197,94,0.3);
}

/* ---------------- 更新日志 ---------------- */
.changelog-container { max-width: 800px; margin: 0 auto; }
.changelog-current {
  background: linear-gradient(135deg, var(--panel-2), var(--panel));
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.changelog-current::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--purple), var(--accent));
}
.changelog-current-ver {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 6px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.changelog-current-title { font-size: 18px; opacity: 0.9; margin-bottom: 8px; }
.changelog-current-date { font-size: 13px; color: var(--text-dim); }
.changelog-timeline { position: relative; padding-left: 28px; }
.changelog-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--border));
}
.changelog-entry {
  position: relative;
  margin-bottom: 28px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.changelog-entry:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-md);
}
.changelog-entry::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 22px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 2px var(--accent), 0 0 12px var(--accent-glow);
}
.changelog-entry-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.changelog-ver { font-size: 16px; font-weight: 700; color: var(--accent); }
.changelog-date {
  font-size: 12px;
  color: var(--text-dim);
  background: var(--panel-2);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
}
.changelog-title { font-size: 14px; color: var(--text-dim); font-weight: 500; }
.changelog-list { list-style: none; padding: 0; margin: 0; }
.changelog-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 7px 0;
  font-size: 14px;
  color: var(--text);
  line-height: 1.5;
}
.changelog-type {
  display: inline-block;
  flex-shrink: 0;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  color: #0a0e17;
  min-width: 40px;
  text-align: center;
}
.changelog-text { flex: 1; }

.hidden { display: none !important; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 768px) {
  .app-header h1 { font-size: 17px; }
  .tab-btn { padding: 9px 14px; font-size: 13px; }
  .app-main { padding: 0 12px 30px; }
  .card-block { padding: 16px; }
  .summary-cards { grid-template-columns: 1fr 1fr; }
  .card-value { font-size: 18px; }
  .tree-children { margin-left: 12px; padding-left: 10px; }
  .form-grid { grid-template-columns: 1fr; }
  .alt-metrics { flex-direction: column; gap: 6px; }
  .result-actions { flex-direction: column; }
  .result-actions .btn { width: 100%; }
}

@media (max-width: 640px) {
  .result-table thead { display: none; }
  .result-table tbody tr {
    display: block;
    margin-bottom: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px;
    background: var(--panel);
  }
  .result-table tbody td {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
    border: none;
    font-size: 13px;
  }
  .result-table tbody td::before {
    content: attr(data-label);
    font-weight: 600;
    color: var(--text-dim);
    margin-right: 8px;
  }
  .tab-bar {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0;
  }
  .tab-btn { white-space: nowrap; flex-shrink: 0; }
  .changelog-current { padding: 20px; }
  .changelog-current-ver { font-size: 26px; }
  .changelog-entry { padding: 14px 16px; }
  .changelog-item { font-size: 13px; }
}

/* 滚动条美化 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* 选中文字颜色 */
::selection {
  background: var(--accent-glow-strong);
  color: var(--text);
}