/* style.css — RV32I マルチサイクルCPUシミュレータ（ライトテーマ / 白背景） */

:root {
  --bg: #ffffff;
  --panel: #ffffff;
  --panel2: #eef2f8;
  --line: #d5dde8;
  --text: #1c2733;
  --muted: #64748b;
  --accent: #1560a8;
  --active: #ef7a00;        /* ハイライト（オレンジ） */
  --active-wire: #ef7a00;
  --wire: #5a6a80;
  --changed: #157a3a;
  --btn: #eef2f8;
  --btn-h: #e0e8f4;
  --err: #c0392b;
  --ok: #1a8a3a;
  /* オリジナルのデータパス図用ブロック色 */
  --blk-blue: #7ea6e0;
  --blk-red: #c0504d;
  --blk-green: #9cbe6f;
  --blk-stroke: #3a5a86;
  /* 段アクセント */
  --if: #0e8a7d; --id: #1560a8; --ex: #c78300; --mem: #b02a8f; --wb: #3a8a1a;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg); color: var(--text);
  font-family: "Segoe UI", "Yu Gothic UI", Meiryo, system-ui, sans-serif;
  font-size: 14.5px; display: flex; flex-direction: column;
}

/* --- ヘッダ --- */
#topbar {
  background: var(--panel2); border-bottom: 1px solid var(--line);
  padding: 8px 14px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
#topbar h1 { font-size: 16.5px; margin: 0; color: #14375f; font-weight: 700; white-space: nowrap; }
#controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.education-back {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  min-height: 30px; padding: 4px 10px; border: 1px solid #b8c4d4; border-radius: 6px;
  background: #fff; color: #36556f; font-size: 12px; font-weight: 600; line-height: 1.2;
  text-decoration: none; white-space: nowrap;
}
.education-back:hover, .education-back:focus-visible {
  border-color: #2b6cb0; background: #eef4fb; color: #2b6cb0;
}

.btn {
  background: var(--btn); color: var(--text); border: 1px solid var(--line);
  padding: 6px 11px; border-radius: 6px; cursor: pointer; font-size: 13.5px; white-space: nowrap;
}
a.btn { display: inline-flex; align-items: center; text-decoration: none; }
.btn:hover { background: var(--btn-h); }
.btn.primary { background: #2b6cb0; border-color: #2b6cb0; color: #fff; }
.btn.primary:hover { background: #2f78c4; }
.btn.ghost { background: transparent; }
.btn.running { background: #c0504d; border-color: #c0504d; color: #fff; }

.speed-ctl { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 12px; }
.mode-ctl { display: flex; align-items: center; gap: 5px; color: var(--muted); font-size: 12px; cursor: pointer; user-select: none; }
.mode-ctl select { background: #fff; color: var(--text); border: 1px solid var(--line); border-radius: 6px; padding: 4px 6px; font-size: 12.5px; cursor: pointer; }
#speed { width: 96px; }
#speedLabel { width: 52px; color: var(--text); }

.stage-badge {
  padding: 4px 12px; border-radius: 6px; font-weight: 700; font-size: 13px;
  background: #fff; color: var(--ex); border: 1px solid var(--line); min-width: 48px; text-align: center;
}
.stage-badge.stage-IF { color: var(--if); }
.stage-badge.stage-ID { color: var(--id); }
.stage-badge.stage-EX { color: var(--ex); }
.stage-badge.stage-MEM { color: var(--mem); }
.stage-badge.stage-WB { color: var(--wb); }
.stage-badge.halted { color: #fff; background: #c0504d; border-color: #c0504d; }
.counters { color: var(--muted); font-variant-numeric: tabular-nums; }

/* --- レイアウト --- */
#layout {
  flex: 1; display: grid; grid-template-columns: 270px 1fr 360px;
  gap: 8px; padding: 8px; min-height: 0; background: #f4f6fa;
}
.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  display: flex; flex-direction: column; min-height: 0; overflow: hidden;
}
.panel-hd {
  padding: 7px 10px; font-size: 13.5px; font-weight: 700; color: var(--accent);
  border-bottom: 1px solid var(--line); background: var(--panel2);
}

/* --- 左パネル --- */
#left { min-width: 0; }
.preset { margin: 8px; padding: 6px; background: #fff; color: var(--text);
  border: 1px solid var(--line); border-radius: 6px; font-size: 12px; }
#asmInput {
  flex: 1; margin: 0 8px; background: #fbfcfe; color: #1c2733; border: 1px solid var(--line);
  border-radius: 6px; padding: 8px; font-family: "Consolas", "Cascadia Code", monospace;
  font-size: 12.5px; line-height: 1.5; resize: none; min-height: 200px;
}
.errors {
  margin: 8px; padding: 7px 9px; border-radius: 6px; font-size: 11.5px; white-space: pre-wrap;
  background: #f6f8fb; border: 1px solid var(--line); min-height: 20px; max-height: 160px; overflow: auto;
  font-family: "Consolas", monospace; color: var(--text);
}
.errors.err { color: #a5281b; background: #fdecea; border-color: #f2b8b2; }
.errors.ok { color: #157a3a; background: #e9f7ee; border-color: #b7e3c6; }

/* --- 中央: データパス --- */
#center { min-width: 0; }
#svgwrap { flex: 1; overflow: auto; padding: 6px; display: flex; align-items: center; background: #fff; }
#datapath { width: 100%; height: auto; min-width: 940px; align-self: center; background: #fff; }

/* SVG 段バンド */
.band { fill: #f2f6fb; stroke: #dbe3ef; stroke-width: 1.5; }
.band.active { fill: #fff4df; stroke: var(--active); stroke-width: 2.5; }
.band-label { fill: var(--muted); font-size: 15px; font-weight: 700; }
.band.active + .band-label { fill: #d9730a; }

/* SVG ブロック（参照図の配色: 青/赤/緑） */
.block rect, .block path, .block ellipse { fill: var(--blk-blue); stroke: var(--blk-stroke); stroke-width: 1.4; transition: stroke .1s; }
.block .blk-title { fill: #ffffff; font-size: 13px; text-anchor: middle; font-weight: 700; }
.block .blk-sub { fill: #eaf1fb; font-size: 10px; text-anchor: middle; }
.block-mux .blk-sub { font-size: 8px; }
.block .blk-val { fill: #0a6b52; font-size: 11.5px; text-anchor: middle; font-family: "Consolas", monospace; font-weight: 700; }

.block-mem rect, .block-rf rect, .block-alu rect, .block-alu ellipse,
.block-ctrl rect, .block-imm rect { fill: var(--blk-blue); }
.block-mux path { fill: var(--blk-red); stroke: #8f3835; }
.block-reg rect { fill: var(--blk-green); stroke: #5f7f3f; }

.block.active rect, .block.active path, .block.active ellipse {
  stroke: var(--active); stroke-width: 2.5;
  filter: drop-shadow(0 0 3px rgba(239,122,0,.85));
}
.block.active .blk-val { fill: #c0600a; }

/* 配線：データパス=やや太、制御信号=細（ハイライト時も差を維持） */
.wire { fill: none; stroke: var(--wire); stroke-width: 2.5; }             /* データパス（既定） */
.wire.active { stroke: var(--active-wire); stroke-width: 4; }         /* データパス点灯 */
.wire.ctrl { stroke-width: 1; }                                       /* 制御信号 */
.wire.ctrl.active { stroke-width: 2.2; }                                /* 制御信号 点灯 */
.arrowhead { fill: var(--wire); }
.arrowhead-hi { fill: var(--active-wire); }
polyline.wire.active { filter: drop-shadow(0 0 2px rgba(239,122,0,.55)); }
.wire-label { fill: #556; font-size: 10.5px; font-family: "Consolas", monospace; text-anchor: start; }

/* ジャンクションドット（分岐点のみ、配線と連動して点灯） */
.junction { fill: #45526a; transition: fill .1s; }
.junction.active { fill: var(--active); }

/* --- 右パネル --- */
#right { min-width: 0; }
.right-cols { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 0; flex: 1; min-height: 0; overflow: hidden; }
.rcol { display: flex; flex-direction: column; min-height: 0; border-right: 1px solid var(--line); overflow: hidden; }
.rcol:last-child { border-right: none; }
.rcol .panel-hd { border-top: 1px solid var(--line); }
.rcol .panel-hd:first-child { border-top: none; }

/* 命令リスト */
.insn-list { overflow-x: hidden; overflow-y: auto; flex: 1 1 40%; min-height: 90px; font-family: "Consolas", monospace; font-size: 12.5px; }
.insn { display: flex; flex-wrap: wrap; column-gap: 6px; row-gap: 1px; padding: 2px 8px; border-left: 3px solid transparent; }
.insn:nth-child(odd) { background: #f6f8fb; }
.insn.current { background: #fff2cc; border-left-color: var(--active); }
.iaddr { color: var(--muted); }
.itext { color: #1c2733; flex: 1 1 auto; min-width: 0; word-break: break-word; }
.insn-empty { color: var(--muted); padding: 10px; font-size: 11px; }

/* 信号 */
.signals { overflow: auto; flex: 1 1 60%; min-height: 120px; padding: 4px 0; }
.sighdr { color: var(--accent); font-size: 12.5px; font-weight: 700; padding: 5px 8px 2px; }
.sighint { color: var(--muted); font-size: 11.5px; padding: 2px 8px; }
.sigrow { display: flex; justify-content: space-between; padding: 2.5px 8px; font-family: "Consolas", monospace; font-size: 12.5px; }
.sigrow.on { background: #fff4df; }
.sname { color: var(--muted); }
.sigrow.on .sname { color: #c0600a; }
.sval { color: var(--text); }

/* レジスタ */
.reg-table { overflow: auto; flex: 1 1 55%; min-height: 120px; padding: 2px 0; }
.reg { display: flex; justify-content: space-between; padding: 2px 8px; font-family: "Consolas", monospace; font-size: 12.5px; }
.reg:nth-child(odd) { background: #f6f8fb; }
.rname { color: var(--muted); }
.rname em { color: #7a8aa3; font-style: normal; margin-left: 5px; }
.rval { color: var(--text); }
.reg.zero { opacity: 0.55; }
.reg.changed { background: #d9f2e1; }
.reg.changed .rval { color: var(--changed); font-weight: 700; }

/* メモリ */
.mem-table { overflow: auto; flex: 1 1 45%; min-height: 90px; padding: 2px 0; font-family: "Consolas", monospace; font-size: 12.5px; }
.memhdr { color: var(--accent); font-size: 11.5px; padding: 4px 8px 2px; }
.memrow { display: flex; justify-content: space-between; padding: 1.5px 8px; }
.memrow:nth-child(odd) { background: #f6f8fb; }
.memrow.hit { background: #ffe6cc; }
.memrow.hit .mval { color: #c0600a; font-weight: 700; }
.maddr { color: var(--muted); }
.mval { color: var(--text); }

@media (max-width: 1280px) {
  #layout { grid-template-columns: 250px 1fr 330px; }
}