/* RISC-V 单周期 CPU 互动模拟器：大字号、无页面滚动的三栏布局 */
:root{
  --bg:#eef3f8; --card:#fff; --ink:#1f3347; --muted:#75879a;
  --line:#dce6f0; --soft:#f7fafd; --a:#2471a3; --a-bg:#eaf3fa;
  --g:#1e8449; --g-bg:#eafaf1; --o:#b9770e; --o-bg:#fef5e7;
  --p:#7d3c98; --p-bg:#f5ecf9; --r:#c0392b; --r-bg:#fdecea;
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--ink);overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:14px;line-height:1.4;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font-family:inherit}button{cursor:pointer}
code,.mono{font-family:var(--mono)}
.card{background:var(--card);border:1px solid var(--line);border-radius:9px;box-shadow:0 1px 2px rgba(20,40,60,.04);min-width:0}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:8px;min-width:0;margin-bottom:5px}
.card-head .mini{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.section-title{display:flex;align-items:center;gap:6px;font-size:15px;font-weight:800;color:#2d4258;white-space:nowrap}
.step-no{display:inline-flex;width:19px;height:19px;border-radius:50%;background:var(--a-bg);color:var(--a);font-size:10.5px;font-weight:800;align-items:center;justify-content:center;flex:none}
.btn{border:1px solid #cbd8e5;background:#fff;color:#324b60;border-radius:6px;padding:4px 9px;font-size:13px;line-height:1.25;display:inline-flex;align-items:center;gap:4px;white-space:nowrap}
.btn:hover:not(:disabled){background:#f2f7fb;border-color:#a9bdd2}
.btn:disabled{opacity:.38;cursor:default}
.btn.primary{background:var(--a);border-color:var(--a);color:#fff}
.btn.primary:hover:not(:disabled){background:#1b5e88}
.btn.small{padding:2px 7px;font-size:12px}
.zoom-control{display:inline-flex;align-items:center;gap:3px;font-size:12.5px;color:var(--muted);white-space:nowrap}
.zoom-control select{height:25px;border:1px solid #cbd8e5;border-radius:5px;background:#fff;color:#324b60;font-size:12.5px;padding:0 2px}

.cpu-app{width:100vw;height:100vh;display:flex;flex-direction:column;gap:6px;padding:7px 9px 8px;min-height:0}
.cpu-top{flex:none;display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:34px}
.brand{display:flex;align-items:baseline;gap:9px;min-width:0;flex-wrap:wrap}
.brand h1{margin:0;font-size:24px;line-height:1.2;white-space:nowrap}
.brand h1 .accent{color:var(--a)}
.brand p{margin:0;color:var(--muted);font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top-actions{display:flex;align-items:center;gap:4px;flex-wrap:wrap;justify-content:flex-end}
.panel-toggles{display:inline-flex;align-items:center;gap:3px;padding-left:5px;margin-left:2px;border-left:1px solid #dce6f0}
.panel-toggle{font-size:12px;padding:3px 7px;color:#5b7084;background:#f7fafd}
.panel-toggle.off{color:#9aaaba;background:#f1f5f9;text-decoration:line-through}
.cpu-status{flex:none;display:flex;align-items:center;gap:8px;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:7px;padding:4px 9px;font-family:var(--mono);font-size:13px;color:#51677d;min-height:28px}
.cpu-status .kv b{color:#1f3347}.cpu-status .sep{width:1px;height:12px;background:#e2eaf2}
.mode-chip{display:inline-flex;align-items:center;justify-content:center;border-radius:4px;padding:1px 7px;font-size:12px;font-weight:800;font-family:var(--mono)}
.mode-chip.idle{background:#f1f5f9;color:#718096}.mode-chip.run{background:var(--a-bg);color:var(--a)}
.mode-chip.done{background:var(--g-bg);color:var(--g)}.mode-chip.bad{background:var(--r-bg);color:var(--r)}
.status-desc{flex:1;min-width:150px;color:#61758a;font-family:inherit;font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.status-desc b{color:#2d4258}

.cpu-main{flex:1;min-height:0;display:grid;grid-template-columns:clamp(280px,21vw,310px) minmax(0,1fr) clamp(240px,18vw,270px);gap:6px}
.cpu-left{display:flex;flex-direction:column;gap:6px;min-height:0;min-width:0}
.cpu-right{display:flex;flex-direction:column;gap:6px;min-height:0;min-width:0}
.program-card{flex:1;min-height:0;display:flex;flex-direction:column;padding:6px 7px}
.program-list{flex:1;min-height:0;overflow:auto;scrollbar-width:thin;border:1px solid #eef3f8;border-radius:5px;background:#fbfcfe}
.program-row{display:grid;grid-template-columns:37px 57px minmax(0,1fr);gap:3px;align-items:baseline;padding:1px 4px;border-bottom:1px solid #f2f6fa;font-family:var(--mono);font-size:13px;color:#51677d;cursor:pointer;line-height:1.35}
.program-row:hover{background:#f5f9fd}
.program-row .addr{color:#9aaaba;font-size:11px}.program-row .word{color:#9b6a12;font-size:11px;overflow:hidden;text-overflow:ellipsis}
.program-row .asm{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.program-row .lab{color:var(--a);font-weight:800}
.program-row.current{background:#fff6dc;box-shadow:inset 3px 0 0 #e6a817}.program-row.next{background:#eef8ff;box-shadow:inset 3px 0 0 #69a9d6}
.program-row.current .addr{color:#b9770e;font-weight:700}.program-row.current .asm{color:#5d4300;font-weight:700}
.stop-tag{font-family:inherit;font-size:10.5px;color:#a0522d;background:#fdeee1;border:1px solid #f0c9a8;border-radius:3px;padding:0 3px;margin-left:4px;white-space:nowrap}
.program-empty{padding:8px;color:var(--muted);font-size:13px}

.data-card{flex:none;height:clamp(150px,26dvh,300px);display:flex;flex-direction:column;padding:6px 7px}
.data-dump{flex:1;min-height:0;overflow:auto;scrollbar-width:thin;border:1px solid #eef3f8;border-radius:5px;background:#fbfcfe;padding:2px 4px;font-family:var(--mono);font-size:11.5px;line-height:1.45;color:#2d4258}
.data-dump-row{display:grid;grid-template-columns:52px repeat(2,minmax(0,1fr));gap:4px;align-items:center}
.data-dump-row+.data-dump-row{border-top:1px solid #f2f6fa}
.data-dump .data-addr{color:#9aaaba;font-size:10.5px;text-align:right;padding-right:2px}
.data-cell{text-align:right;padding:1px 2px;border-radius:3px}
.data-cell.read{background:#eef8ff;color:#1f6f9e}
.data-cell.write{background:#fff6dc;color:#8a5a00;font-weight:800;box-shadow:inset 2px 0 0 #e6a817}
.data-list{flex:1;min-height:0;overflow:auto;scrollbar-width:thin;border:1px solid #eef3f8;border-radius:5px;background:#fbfcfe}
.data-row{display:grid;grid-template-columns:39px 1fr;gap:4px;align-items:baseline;padding:1px 4px;border-bottom:1px solid #f2f6fa;font-family:var(--mono);font-size:13px;color:#51677d;line-height:1.3}
.data-row .da{color:#9aaaba;font-size:11px}.data-row .dv{text-align:right;color:#2d4258}
.data-row.read{background:#eef8ff}.data-row.write{background:#fff6dc;box-shadow:inset 3px 0 0 #e6a817}
.data-row.write .dv{color:#8a5a00;font-weight:800}.data-row .delta{font-size:10px;color:var(--o);margin-left:3px}

.reg-card{flex:1;min-height:0;display:flex;flex-direction:column;padding:6px 7px}
.reg-list{flex:1;min-height:0;overflow:auto;scrollbar-width:thin;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(16,minmax(min-content,1fr));grid-auto-flow:column;gap:2px 4px}
.reg-row{display:flex;align-items:center;justify-content:space-between;gap:3px;border:1px solid #eef3f8;background:#fbfcfe;border-radius:4px;padding:0 4px;font-family:var(--mono);font-size:clamp(11px,1.4dvh,12.5px);line-height:1.15;color:#61758a;white-space:nowrap;overflow:hidden}
.reg-row .rn{color:#8b9aaa;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.reg-row .rv{color:#2d4258;font-weight:400;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.reg-row.rs1{background:#eef6fc;border-color:#aed2ea}.reg-row.rs2{background:#f3edf8;border-color:#d5b8e4}
.reg-row.rd{background:#fff6dc;border-color:#e6a817;color:#8a5a00}.reg-row.rd .rv{color:#8a5a00}
.reg-row .delta{color:var(--o);font-size:9px;margin-left:2px}.reg-row.zero .rv{color:#b0bcc8}

.center{min-width:0;min-height:0;display:flex;flex-direction:column}
.wire-legend{flex:none;display:flex;align-items:center;flex-wrap:wrap;gap:3px 14px;padding:3px 7px;border-bottom:1px solid #eef3f8;font-family:var(--mono);font-size:10px;color:#61758a;line-height:1.3}
.wire-legend span{display:inline-flex;align-items:center;gap:4px;white-space:nowrap}
.wire-swatch{display:inline-block;width:18px;height:0;border-top:2px solid #000;flex:none}
.wire-swatch.ctrl{border-top-color:#0000ff}
.wire-swatch.hot{border-top-color:#d97706;border-top-width:2.5px}
.datapath-card{flex:1;min-height:0;display:flex;flex-direction:column;padding:4px 6px 3px;overflow:hidden}
.datapath-wrap{flex:1;min-height:0;overflow:hidden;border:0;border-radius:0;background:#fff}
#dp-svg{width:100%;height:100%;display:block}

.dp-bg{fill:#fff}
.dp-box{fill:#fff;stroke:#111;stroke-width:2.6}
.dp-box rect,.dp-box polygon{fill:#fff;stroke:#111;stroke-width:2.6}
.dp-box.active rect,.dp-box.active polygon{stroke:#d97706;stroke-width:2.6;fill:#fff}
.dp-box.active .dp-mux{stroke:#d97706;stroke-width:2.6}
.dp-box.active text{fill:#111}
.dp-title{font-family:Arial,"Helvetica Neue","PingFang SC",sans-serif;font-size:24px;fill:#111}
.dp-val{font-family:var(--mono);font-size:21px;fill:#111}
.dp-val.big{font-size:22px}
.dp-lab{font-family:Arial,"Helvetica Neue","PingFang SC",sans-serif;font-size:17px;fill:#222}
.dp-ctrl{font-family:Arial,"Helvetica Neue","PingFang SC",sans-serif;font-size:17px;fill:#444}
.dp-wire{fill:none;stroke:#333;stroke-width:2}
.dp-wire.active{stroke:#d97706;stroke-width:2}
.dp-wire-bg{fill:none;stroke:#fff;stroke-width:7}
.dp-dots circle{fill:#111}
.dp-ctrl-wire{fill:none;stroke:#111;stroke-width:1.4}
.dp-clock{fill:#111}
.dp-box.active .dp-mux-sel{fill:#d97706}
.dp-wire.branch{stroke:#d97706}
.dp-mux{fill:#fff;stroke:#111;stroke-width:2.6}
.dp-mux.active{stroke:#d97706;stroke-width:2.6}
.dp-mux-sel{font-family:Arial,"Helvetica Neue","PingFang SC",sans-serif;font-size:17px;fill:#111}
.dp-arrow{fill:#111}

.signal-card{flex:none;height:clamp(180px,30dvh,260px);display:flex;flex-direction:column;padding:5px 8px 6px;overflow:hidden}
.signal-current{flex:none;display:flex;align-items:center;gap:5px;flex-wrap:wrap;background:#f5f9fd;border:1px solid #e5eef7;border-radius:5px;padding:2px 6px;margin-bottom:3px;font-family:var(--mono);font-size:12px;color:#51677d;white-space:normal}
.signal-current b{color:#1f3347}.signal-current .chip{background:#fff;border:1px solid #dce8f3;border-radius:3px;padding:0 5px;color:#2471a3;font-weight:700}
.signal-current .warn{color:var(--r);font-weight:700}
.signal-current .muted{color:#8b9aaa;font-weight:400}
.signal-tabs{flex:none;display:flex;align-items:center;gap:4px;margin-bottom:3px;flex-wrap:wrap}
.sig-tab{border:1px solid #dce6f0;background:#f8fbfe;color:#61758a;border-radius:5px;padding:2px 9px;font-size:12px;font-weight:700;line-height:1.25}
.sig-tab.active{background:var(--a);border-color:var(--a);color:#fff}
.sig-tab:hover:not(.active){background:#eef5fb}
.signal-scroll{flex:1;min-height:0;overflow:auto;scrollbar-width:thin;border:1px solid #eef3f8;border-radius:5px;background:#fff}
.signal-table{border-collapse:collapse;width:100%;table-layout:fixed;font-family:var(--mono);font-size:12.5px;line-height:1.2;color:#51677d}
.signal-table th,.signal-table td{border-bottom:1px solid #eef3f8;border-right:1px solid #f2f6fa;padding:0.5px 4px;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.signal-table th{background:#f5f9fd;color:#7c8fa2;font-weight:800;font-size:10.5px;position:sticky;top:0;z-index:2}
.signal-table th:first-child,.signal-table td:first-child{width:86px}
.signal-table td.inst{text-align:left;font-weight:800;color:#2d4258;background:#fbfcfe}
.signal-table tr.cur td{background:#fff6dc;color:#5d4300;box-shadow:inset 0 1px 0 #e6a817,inset 0 -1px 0 #e6a817}
.signal-table tr.cur td.inst{background:#fff0c2;color:#7a4f00}
.signal-table tr.cur td.cur-cell{background:#f6c945;color:#4d3300;font-weight:900;box-shadow:inset 0 0 0 2px #b9770e}
.signal-table td.dash{color:#b5c1cc}

.modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:18px}
.modal.open{display:flex}.modal-backdrop{position:absolute;inset:0;background:rgba(16,32,48,.46)}
.modal-panel{position:relative;width:min(1000px,96vw);height:min(760px,92vh);background:#fff;border-radius:11px;box-shadow:0 24px 70px rgba(20,40,60,.3);display:flex;flex-direction:column;overflow:hidden}
.modal-head{flex:none;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 13px;border-bottom:1px solid var(--line)}
.modal-title{font-size:17px;font-weight:800;color:#2d4258}.modal-title .mini{font-size:12px;color:var(--muted);font-weight:400;margin-left:8px}
.modal-body{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:9px;padding:9px 13px;overflow:hidden}
.source-wrap{display:flex;flex-direction:column;min-height:0;gap:5px}
#source-editor{flex:1;min-height:0;width:100%;resize:none;border:1px solid #d5e0eb;border-radius:5px;background:#fbfcfe;padding:7px;font-family:var(--mono);font-size:14px;line-height:1.5;color:#26394a;tab-size:4}
#source-editor:focus{outline:2px solid #c6e2f5;border-color:#7fb3d5}
.editor-help{border:1px solid #e8eef5;background:#fbfcfe;border-radius:5px;padding:6px;font-size:12px;color:#788a9c;line-height:1.5;overflow:auto}
.editor-help b{color:#3f566c}.editor-help code{background:#eef5fb;border-radius:3px;padding:0 3px;font-size:11.5px;color:#1a5276}
.error-box{flex:none;max-height:90px;overflow:auto;color:var(--r);font-size:12px;line-height:1.4;font-family:var(--mono);white-space:pre-wrap}
.modal-foot{flex:none;display:flex;align-items:center;gap:7px;padding:7px 13px;border-top:1px solid var(--line);font-size:12px;color:#8b9aaa}
.modal-foot .spacer{flex:1}

@media (max-width: 1480px){
  .brand p{display:none}
}


@media (max-height: 940px){
  .program-row{font-size:13.5px;line-height:1.25;padding:0 4px}
  .data-row{font-size:13.5px;line-height:1.25;padding:0 4px}
  .signal-table{font-size:12.5px}
  .signal-table th,.signal-table td{padding:0.5px 4px}
  .signal-current{font-size:12px;padding:1px 6px;margin-bottom:2px}
  .signal-tabs{margin-bottom:2px}
  .sig-tab{padding:1px 8px;font-size:12px}
}

.datapath-card>.card-head{margin-bottom:3px;padding-bottom:3px}




.cycle-data{flex:none;display:flex;align-items:center;flex-wrap:wrap;gap:2px 6px;background:#f8fbfe;border:1px solid var(--line);border-radius:7px;padding:3px 9px;font-family:var(--mono);font-size:11px;color:#51677d;line-height:1.25;min-height:23px}
.cycle-data .cd-grp{display:inline-flex;align-items:center;gap:3px;white-space:nowrap}
.cycle-data .cd-k{color:#8b9aaa;font-size:10px}
.cycle-data .cd-v{color:#1f3347;font-weight:600}
.cycle-data .cd-v.hot{color:#b9770e}
.cycle-data .cd-sep{width:1px;height:10px;background:#e2eaf2;flex:none}

.dp-arrow{fill:#111}
.dp-arrow.active{fill:#d97706}


/* 栏位隐藏 */
#cpu-app.hide-left .cpu-left,#cpu-app.hide-right .cpu-right{display:none}
#cpu-app.hide-left .cpu-main{grid-template-columns:minmax(0,1fr) clamp(240px,18vw,270px)}
#cpu-app.hide-right .cpu-main{grid-template-columns:clamp(280px,21vw,310px) minmax(0,1fr)}
#cpu-app.hide-left.hide-right .cpu-main{grid-template-columns:minmax(0,1fr)}
#cpu-app.hide-left .pl-main{grid-template-columns:minmax(0,1fr) clamp(240px,18vw,270px)}
#cpu-app.hide-right .pl-main{grid-template-columns:clamp(280px,21vw,310px) minmax(0,1fr)}
#cpu-app.hide-left.hide-right .pl-main{grid-template-columns:minmax(0,1fr)}
#cpu-app.hide-bottom .signal-card,#cpu-app.hide-bottom .mc-control-card,#cpu-app.hide-bottom .pl-bottom{display:none}


/* 模拟器共用的面板、滚动容器和表格基础样式 */
.mc-dp-wrap,.pl-dp-wrap{flex:1;min-height:0;display:flex;align-items:center;justify-content:center}
.mc-control-card,.pl-bottom-card{display:flex;flex-direction:column;overflow:hidden;min-width:0}
.mc-table-scroll,.pl-scroll{flex:1;min-height:0;overflow:auto;scrollbar-width:thin}
.mc-ctable,.pl-stage-table{width:100%;border-collapse:collapse;font-family:var(--mono)}
.mc-ctable th,.pl-stage-table th{position:sticky;top:0;background:#f4f8fc;color:#7b8fa1;border-bottom:1px solid #e2eaf2;white-space:nowrap;z-index:1}
.mc-ctable td,.pl-stage-table td{color:#51677d;white-space:nowrap}