/* app.css —— ANSYS 2024 R2 网页复刻的界面样式（零外部依赖、单文件）。
   色彩参照 ANSYS 品牌：深蓝 #122a44 + 黄 #ffb71b；功能区/面板用浅灰工作台配色。
   CSS 变量统一以 --ansys- 前缀命名，便于服务端静态资源校验识别。 */

:root {
  --ansys-navy: #122a44;
  --ansys-navy-2: #1c3c5e;
  --ansys-yellow: #ffb71b;
  --ansys-yellow-soft: #ffe1a1;
  --ansys-blue: #1f6feb;
  --ansys-bg: #eef1f5;
  --ansys-panel: #f7f8fa;
  --ansys-card: #ffffff;
  --ansys-line: #d3d9e1;
  --ansys-line-soft: #e4e8ee;
  --ansys-ink: #1e2733;
  --ansys-ink-2: #5b6675;
  --ansys-ink-3: #8b95a3;
  --ok: #0f7b3f;
  --ok-bg: #e7f6ec;
  --warn: #9a5b00;
  --warn-bg: #fdf3e0;
  --bad: #b4231c;
  --bad-bg: #fdeceb;
  --shadow: 0 1px 3px rgba(18, 42, 68, 0.12);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--ansys-bg);
  color: var(--ansys-ink);
  font: 13.5px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  overflow: hidden;
}

button, input, select, textarea { font: inherit; color: inherit; }

#root, .app { height: 100%; display: flex; flex-direction: column; min-height: 0; }

/* ---------------- 标题栏 ---------------- */
.titlebar {
  display: flex; align-items: center; gap: 18px;
  background: linear-gradient(180deg, var(--ansys-navy-2), var(--ansys-navy));
  color: #fff; padding: 7px 16px; flex: 0 0 auto;
  border-bottom: 3px solid var(--ansys-yellow);
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 260px; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 6px; background: var(--ansys-yellow);
  color: var(--ansys-navy); font-weight: 800; font-size: 20px; display: grid; place-items: center;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 15px; letter-spacing: .2px; }
.brand-text span { font-size: 11px; color: #b8c7d9; }
.title-project { flex: 1; display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: #dce6f2; }
.saved-dot { font-size: 10px; color: #7fd6a3; transition: color .2s; }
.saved-dot.dirty { color: var(--ansys-yellow); }
.title-actions { display: flex; align-items: center; gap: 10px; }
.edition-badge {
  font-size: 11px; font-weight: 700; letter-spacing: .6px; padding: 3px 9px; border-radius: 999px;
  background: #2c4a6d; color: #ffe1a1; border: 1px solid #46688e;
}
.edition-badge.prod { background: #124b2e; color: #a6f0c4; border-color: #2e7a50; }
.edition-badge.dev { background: #4c3a05; color: #ffd97a; border-color: #8a6a12; }
.build-tag { font-size: 11px; color: #93a6bc; font-family: var(--mono); }
button.ghost { background: transparent; color: #cfe0f2; border: 1px solid #44648a; border-radius: 6px; padding: 4px 10px; cursor: pointer; }
button.ghost:hover { background: rgba(255,255,255,.08); }

/* ---------------- 功能区选项卡 ---------------- */
.ribbon-tabs {
  display: flex; gap: 2px; background: var(--ansys-navy);
  padding: 0 10px; flex: 0 0 auto;
}
.ribbon-tab {
  background: transparent; border: none; color: #b9c9db; padding: 7px 16px 6px;
  cursor: pointer; border-bottom: 3px solid transparent; font-size: 13px;
}
.ribbon-tab:hover { color: #fff; background: rgba(255,255,255,.06); }
.ribbon-tab.active { color: var(--ansys-navy); background: var(--ansys-bg); border-radius: 6px 6px 0 0; font-weight: 600; }

/* ---------------- 功能区 ---------------- */
.ribbon {
  display: flex; gap: 0; background: var(--ansys-bg); border-bottom: 1px solid var(--ansys-line);
  padding: 6px 10px 2px; flex: 0 0 auto; overflow-x: auto; min-height: 74px;
}
.ribbon-group { display: flex; flex-direction: column; justify-content: space-between; padding: 0 10px; border-right: 1px solid var(--ansys-line-soft); }
.ribbon-group:last-child { border-right: none; }
.ribbon-items { display: flex; gap: 4px; align-items: flex-start; }
.ribbon-btn {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  min-width: 62px; padding: 5px 7px; background: transparent; border: 1px solid transparent;
  border-radius: 6px; cursor: pointer; color: var(--ansys-ink);
}
.ribbon-btn:hover { background: #fff; border-color: var(--ansys-line); box-shadow: var(--shadow); }
.ribbon-btn .rb-icon { font-size: 17px; line-height: 1; color: var(--ansys-navy-2); }
.ribbon-btn .rb-label { font-size: 11.5px; white-space: nowrap; }
.ribbon-group-label { text-align: center; font-size: 10.5px; color: var(--ansys-ink-3); padding-top: 3px; }

/* ---------------- 工作区 ---------------- */
.workspace {
  flex: 1; min-height: 0; display: grid;
  grid-template-columns: 288px minmax(320px, 1fr) 360px;
  gap: 8px; padding: 8px;
}
.panel {
  background: var(--ansys-panel); border: 1px solid var(--ansys-line); border-radius: 8px;
  display: flex; flex-direction: column; min-height: 0; overflow: hidden;
}
.panel-head {
  display: flex; justify-content: space-between; align-items: baseline; gap: 8px;
  padding: 8px 12px; border-bottom: 1px solid var(--ansys-line);
  background: linear-gradient(180deg, #fff, #f1f4f8);
  font-weight: 700; font-size: 12.5px; color: var(--ansys-navy);
}
.panel-sub { font-weight: 400; color: var(--ansys-ink-3); font-size: 11.5px; }
.panel-foot { padding: 6px 12px; border-top: 1px solid var(--ansys-line-soft); font-size: 11.5px; color: var(--ansys-ink-3); }

/* ---------------- 大纲树 ---------------- */
.tree { flex: 1; overflow: auto; padding: 6px 4px 12px; }
.tree-node {
  display: flex; align-items: center; gap: 6px; padding: 3px 8px 3px calc(8px + var(--depth, 0) * 14px);
  border-radius: 5px; cursor: pointer; font-size: 12.5px; line-height: 1.6;
}
.tree-node:hover { background: #e8eef6; }
.tree-node.selected { background: #dbe8fa; box-shadow: inset 2px 0 0 var(--ansys-blue); }
.tree-toggle { width: 10px; color: var(--ansys-ink-3); font-size: 10px; }
.tree-toggle.empty { visibility: hidden; }
.tree-icon { width: 16px; text-align: center; color: var(--ansys-navy-2); }
.tree-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tree-badge { font-size: 10.5px; color: var(--ansys-ink-2); background: #e7ecf3; padding: 1px 6px; border-radius: 999px; }
.tree-status { width: 8px; height: 8px; border-radius: 50%; background: var(--ansys-ink-3); flex: 0 0 auto; }
.tree-status.ok { background: var(--ok); }
.tree-status.bad { background: var(--bad); }
.tree-status.warn { background: #d28a00; }
.tree-status.idle { background: #b9c2ce; }
.tree-children { }

/* ---------------- 视口 ---------------- */
.viewport-wrap { display: flex; flex-direction: column; min-height: 0; border: 1px solid var(--ansys-line); border-radius: 8px; overflow: hidden; background: #fff; }
.viewport-toolbar {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 5px 8px; background: linear-gradient(180deg, #fff, #f2f5f9); border-bottom: 1px solid var(--ansys-line);
  flex-wrap: wrap;
}
.vt-left, .vt-right { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.viewport-toolbar button {
  background: #fff; border: 1px solid var(--ansys-line); border-radius: 5px; padding: 3px 8px;
  font-size: 11.5px; cursor: pointer; color: var(--ansys-ink-2);
}
.viewport-toolbar button:hover { border-color: var(--ansys-blue); color: var(--ansys-blue); }
.viewport-toolbar button.active { background: var(--ansys-navy); border-color: var(--ansys-navy); color: #fff; }
.vt-sep { width: 1px; height: 18px; background: var(--ansys-line); margin: 0 2px; }
.vt-field, .vt-scale { display: flex; align-items: center; gap: 4px; font-size: 11.5px; color: var(--ansys-ink-2); }
.vt-field select { max-width: 190px; padding: 2px 4px; border: 1px solid var(--ansys-line); border-radius: 5px; background: #fff; font-size: 11.5px; }
.vt-scale input { width: 64px; padding: 2px 4px; border: 1px solid var(--ansys-line); border-radius: 5px; }
.vt-solving { font-size: 11.5px; color: var(--ansys-blue); min-width: 52px; }
.vt-solving.on::before { content: "◐ "; animation: spin 1s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

.canvas-host { position: relative; flex: 1; min-height: 0; }
#viewport { width: 100%; height: 100%; display: block; cursor: grab; }
#viewport:active { cursor: grabbing; }
.viewport-hint {
  position: absolute; left: 10px; bottom: 8px; font-size: 11px; color: #64748b;
  background: rgba(255,255,255,.82); border: 1px solid #dbe2ea; border-radius: 5px; padding: 3px 8px;
  pointer-events: none; max-width: calc(100% - 20px);
}

/* 图例 */
.legend {
  position: absolute; right: 12px; top: 12px; width: 208px;
  background: rgba(255,255,255,.95); border: 1px solid var(--ansys-line); border-radius: 8px;
  padding: 8px 10px; box-shadow: var(--shadow); font-size: 11.5px;
}
.legend-title { font-weight: 700; color: var(--ansys-navy); margin-bottom: 5px; }
.legend-bar { height: 12px; border-radius: 3px; border: 1px solid var(--ansys-line-soft); }
.legend-scale { display: flex; justify-content: space-between; color: var(--ansys-ink-2); margin-top: 3px; font-family: var(--mono); font-size: 10.5px; }
.legend-unit { color: var(--ansys-ink-3); margin-top: 2px; }

/* ---------------- Details ---------------- */
.details-body { flex: 1; overflow: auto; padding: 8px; }
.card {
  background: var(--ansys-card); border: 1px solid var(--ansys-line); border-radius: 8px;
  padding: 10px 12px; margin-bottom: 8px;
}
.card h3 {
  margin: 0 0 8px; font-size: 12.5px; color: var(--ansys-navy); padding-bottom: 5px;
  border-bottom: 1px solid var(--ansys-line-soft); display: flex; justify-content: space-between;
}
.field-row { display: grid; grid-template-columns: 96px 1fr; gap: 8px; align-items: start; margin: 5px 0; }
.field-row > label { font-size: 11.5px; color: var(--ansys-ink-2); padding-top: 4px; }
.field-control { min-width: 0; }
.field-control input, .field-control select {
  width: 100%; padding: 4px 6px; border: 1px solid var(--ansys-line); border-radius: 5px;
  background: #fff; font-size: 12px;
}
.field-control input:focus, .field-control select:focus { outline: 2px solid #bcd6ff; border-color: var(--ansys-blue); }
.field-hint { font-size: 10.5px; color: var(--ansys-ink-3); margin-top: 2px; }
.unit { font-size: 11px; color: var(--ansys-ink-3); }
.muted { color: var(--ansys-ink-2); font-size: 12px; }
.small { font-size: 11.5px; }
.muted.small.ok { color: var(--ok); }
.muted.small.bad { color: var(--bad); }
.btn-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 9px; }
.btn-row button, .details-body button:not(.link):not(.icon) {
  background: #fff; border: 1px solid var(--ansys-line); border-radius: 5px; padding: 5px 10px;
  font-size: 12px; cursor: pointer; color: var(--ansys-ink);
}
.btn-row button:hover { border-color: var(--ansys-blue); color: var(--ansys-blue); }
.btn-row button.primary, .details-body button.primary { background: var(--ansys-navy); border-color: var(--ansys-navy); color: #fff; }
.btn-row button.primary:hover { background: var(--ansys-navy-2); color: #fff; }
button.link { background: none; border: none; color: var(--ansys-blue); cursor: pointer; padding: 0 2px; font-size: 12px; }
button.link.danger { color: var(--bad); }
button.icon { background: none; border: none; cursor: pointer; color: var(--ansys-ink-2); border-radius: 4px; padding: 2px 5px; }
button.icon:hover { background: #eef2f7; }
button.icon.danger:hover { color: var(--bad); background: var(--bad-bg); }

.steps { margin: 0; padding-left: 18px; font-size: 12px; color: var(--ansys-ink-2); }
.steps li { margin: 3px 0; }
ul.clean { margin: 0; padding-left: 18px; font-size: 12px; }
ul.clean li { margin: 3px 0; }

.table-wrap { overflow-x: auto; margin: 6px 0; }
table.simple { width: 100%; border-collapse: collapse; font-size: 11.5px; }
table.simple th, table.simple td { border: 1px solid var(--ansys-line-soft); padding: 4px 6px; text-align: left; vertical-align: top; }
table.simple th { background: #f1f4f8; color: var(--ansys-ink-2); font-weight: 600; }
table.simple tr.selected-row td { background: #e8f1ff; }
table.simple td:first-child { color: var(--ansys-ink-2); }

.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 6px; }
.stat-grid > div { background: #f4f7fb; border: 1px solid var(--ansys-line-soft); border-radius: 6px; padding: 6px 8px; }
.stat-grid span { display: block; font-size: 10.5px; color: var(--ansys-ink-3); }
.stat-grid strong { font-size: 14px; color: var(--ansys-navy); }

.meter-row { display: grid; grid-template-columns: 150px 1fr 52px; gap: 6px; align-items: center; margin: 6px 0; font-size: 11.5px; }
.meter { height: 8px; background: #e8edf4; border-radius: 999px; overflow: hidden; }
.meter i { display: block; height: 100%; border-radius: 999px; }
.meter i.good { background: linear-gradient(90deg, #34a853, #7bd88f); }
.meter i.warn { background: linear-gradient(90deg, #d99400, #f0c36d); }

.geom-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.geom-btn {
  display: flex; flex-direction: column; gap: 3px; text-align: left; padding: 7px 8px;
  border: 1px solid var(--ansys-line); border-radius: 6px; background: #fff; cursor: pointer;
}
.geom-btn strong { font-size: 12px; color: var(--ansys-ink); }
.geom-btn span { font-size: 10.5px; color: var(--ansys-ink-3); line-height: 1.35; }
.geom-btn:hover { border-color: var(--ansys-blue); }
.geom-btn.active { border-color: var(--ansys-navy); box-shadow: inset 0 0 0 1px var(--ansys-navy); background: #f2f7ff; }

.bc-row {
  display: flex; flex-wrap: wrap; gap: 5px; align-items: center;
  border: 1px solid var(--ansys-line-soft); border-radius: 6px; padding: 5px 6px; margin: 5px 0;
  background: #fbfcfe;
}
.bc-row select { flex: 1 1 160px; min-width: 120px; }
.bc-row input { width: 70px; padding: 3px 5px; border: 1px solid var(--ansys-line); border-radius: 4px; }
.bc-row .vec-inputs { display: flex; gap: 4px; }
.bc-row .vec-inputs label { display: flex; align-items: center; gap: 2px; font-size: 11px; color: var(--ansys-ink-2); }
.bc-kind { font-size: 10.5px; font-weight: 700; padding: 2px 7px; border-radius: 999px; color: #fff; white-space: nowrap; }
.bc-kind.fixed { background: #cf4b3f; }
.bc-kind.frictionless { background: #d99400; }
.bc-kind.force { background: #2478e0; }
.bc-kind.pressure { background: #8c50c8; }
.bc-kind.gravity { background: #5b6675; }
.bc-kind.temperature { background: #e86e28; }
.bc-kind.convection { background: #3caabe; }
.bc-kind.heatflux { background: #c83c8c; }

.pill { font-size: 10.5px; padding: 1px 8px; border-radius: 999px; }
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.bad { background: var(--bad-bg); color: var(--bad); }
.pill.idle { background: #eef1f5; color: var(--ansys-ink-3); }

.verdict { font-weight: 800; font-size: 13px; padding: 5px 10px; border-radius: 6px; margin-bottom: 6px; }
.verdict.ok { background: var(--ok-bg); color: var(--ok); }
.verdict.warn { background: var(--warn-bg); color: var(--warn); }
.verdict.bad { background: var(--bad-bg); color: var(--bad); }

/* ---------------- 底部 ---------------- */
.footer { flex: 0 0 auto; border-top: 1px solid var(--ansys-line); background: #fff; }
.messages { height: 86px; overflow: auto; padding: 5px 12px; font-size: 11.5px; border-bottom: 1px solid var(--ansys-line-soft); }
.msg { padding: 1px 0; color: var(--ansys-ink-2); white-space: pre-wrap; }
.msg.ok { color: var(--ok); }
.msg.warn { color: var(--warn); }
.msg.error { color: var(--bad); font-weight: 600; }
.msg.info::before { content: "› "; color: var(--ansys-ink-3); }
.statusbar {
  display: flex; align-items: center; gap: 16px; padding: 4px 12px;
  font-size: 11.5px; color: var(--ansys-ink-2); background: linear-gradient(180deg, #f7f9fb, #eef1f5);
}
.statusbar span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.statusbar .spacer { flex: 1; }

/* ---------------- 模态框 ---------------- */
.modal-mask {
  position: fixed; inset: 0; background: rgba(12, 22, 36, .45); display: grid; place-items: center;
  z-index: 1000; padding: 20px;
}
.modal {
  background: #fff; border-radius: 10px; box-shadow: 0 18px 50px rgba(10, 24, 42, .35);
  width: min(680px, 96vw); max-height: 88vh; display: flex; flex-direction: column;
}
.modal.wide { width: min(980px, 96vw); }
.modal-head {
  display: flex; justify-content: space-between; align-items: center; padding: 11px 16px;
  border-bottom: 1px solid var(--ansys-line); background: linear-gradient(180deg, #fff, #f2f5f9);
  border-radius: 10px 10px 0 0;
}
.modal-head h2 { margin: 0; font-size: 14px; color: var(--ansys-navy); }
.modal-body { padding: 14px 16px; overflow: auto; font-size: 12.5px; }
.modal-foot { padding: 10px 16px; border-top: 1px solid var(--ansys-line); }
.report pre.verdict-lines {
  background: #0f1b29; color: #d7e6f7; border-radius: 6px; padding: 10px 12px;
  font-family: var(--mono); font-size: 11.5px; overflow-x: auto; white-space: pre-wrap;
}
.report-text {
  width: 100%; min-height: 150px; margin-top: 8px; font-family: var(--mono); font-size: 11px;
  border: 1px solid var(--ansys-line); border-radius: 6px; padding: 8px; resize: vertical;
}
.help-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 24px; }
.help-grid h3 { margin: 0 0 6px; font-size: 12.5px; color: var(--ansys-navy); }
.help-grid p { margin: 0 0 6px; }

.toast {
  position: fixed; right: 18px; bottom: 120px; z-index: 1200; max-width: 360px;
  background: var(--ansys-navy); color: #fff; padding: 9px 14px; border-radius: 8px;
  box-shadow: 0 8px 24px rgba(10, 24, 42, .35); font-size: 12.5px; animation: toast-in .18s ease-out;
}
.toast.ok { background: #10623a; }
.toast.warn { background: #8a5300; }
.toast.error { background: #8f1d17; }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------------- 窄屏 ---------------- */
@media (max-width: 1180px) {
  .workspace { grid-template-columns: 240px 1fr 300px; }
  .ribbon-btn { min-width: 54px; }
  .ribbon-btn .rb-label { font-size: 10.5px; }
}
@media (max-width: 900px) {
  .workspace { grid-template-columns: 1fr; grid-template-rows: 160px minmax(280px, 1fr) 240px; }
  .panel.outline { max-height: 160px; }
  .help-grid { grid-template-columns: 1fr; }
  .ribbon { min-height: 62px; }
}