/* 演示页专属样式（复用 styles.css 的变量与 .btn / .site-nav / .footer） */

.demo-wrap { max-width: 1120px; margin: 0 auto; padding: 48px 24px 72px; }

.demo-head h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; margin: 0 0 12px; }
.demo-sub { color: var(--muted); max-width: 720px; margin: 0; font-size: 16px; }
.demo-note {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.14);
  border: 1px solid rgba(245, 158, 11, 0.3);
  vertical-align: middle;
}

/* 场景选择 */
.demo-scenarios { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0 18px; }
.scn {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.scn:hover { color: var(--text); }
.scn.active { color: #04121b; background: var(--accent-grad); border-color: transparent; }

/* 控制台外框 */
.demo-console {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #0c1226;
  padding: 22px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45);
}

/* 步骤条 */
.demo-steps {
  list-style: none;
  margin: 0 0 22px;
  padding: 0 0 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  counter-reset: dstep;
}
.demo-steps li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  padding: 6px 12px 6px 8px;
  border-radius: 999px;
  border: 1px solid transparent;
  counter-increment: dstep;
}
.demo-steps li::before {
  content: counter(dstep);
  display: grid;
  place-items: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  background: rgba(148, 163, 184, 0.18);
  color: var(--muted);
}
.demo-steps li.active { color: var(--text); border-color: rgba(56, 189, 248, 0.45); background: rgba(56, 189, 248, 0.08); }
.demo-steps li.active::before { background: var(--accent-grad); color: #04121b; }
.demo-steps li.done { color: #34d399; }
.demo-steps li.done::before { content: "✓"; background: rgba(52, 211, 153, 0.2); color: #34d399; }

/* 舞台：主区 + 日志 */
.demo-stage { display: grid; grid-template-columns: 1fr 320px; gap: 18px; }
.demo-main { min-height: 360px; }

/* 资料导入 */
.dres-title { font-size: 15px; font-weight: 700; margin: 4px 0 14px; }
.dres-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.dres {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  font-size: 14px;
  animation: dfade 0.4s ease both;
}
.dres .dico { width: 8px; height: 8px; border-radius: 2px; background: var(--accent-grad); }

/* 需求树 */
.dtree { font-size: 14px; }
.dtree-title { font-size: 15px; font-weight: 700; margin: 4px 0 14px; }
.dnode {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0;
  opacity: 0; transform: translateX(-8px);
  animation: dslide 0.4s ease forwards;
}
.dnode .badge {
  font-size: 11px; font-weight: 700;
  padding: 2px 8px; border-radius: 6px;
}
.dnode .badge.mid { color: #fbbf24; background: rgba(245, 158, 11, 0.18); }
.dnode .badge.leaf { color: #34d399; background: rgba(52, 211, 153, 0.18); }
.dnode .nm { color: var(--text); }
.dnode.l1 { padding-left: 0; }
.dnode.l2 { padding-left: 26px; }
.dnode.l3 { padding-left: 52px; }

/* 看板 */
.dkanban { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.dcol-head { font-size: 12px; color: var(--muted); margin-bottom: 8px; display: flex; justify-content: space-between; }
.dcol-body { display: flex; flex-direction: column; gap: 8px; min-height: 60px; }
.dcard {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  padding: 10px 12px;
  font-size: 13px;
  animation: dpop 0.35s ease both;
}
.dcard .ct { color: var(--text); font-weight: 600; margin-bottom: 8px; display: block; }
.dcard .bar { height: 6px; border-radius: 3px; background: rgba(148, 163, 184, 0.2); overflow: hidden; }
.dcard .bar > i { display: block; height: 100%; width: 0; background: var(--accent-grad); transition: width 1.1s ease; }
.dcard .cstate { font-size: 11px; margin-top: 8px; display: inline-block; padding: 2px 8px; border-radius: 999px; }
.dcard .cstate.wait { color: #cbd5e1; background: rgba(100, 116, 139, 0.3); }
.dcard .cstate.run { color: #38bdf8; background: rgba(56, 189, 248, 0.16); }
.dcard .cstate.verify { color: #c4b5fd; background: rgba(167, 139, 250, 0.18); }
.dcard .cstate.rework { color: #fbbf24; background: rgba(245, 158, 11, 0.18); }
.dcard .cstate.done { color: #34d399; background: rgba(52, 211, 153, 0.18); }
.dcard.flash { animation: dflash 0.6s ease; }

/* 验收清单 */
.dverify { margin-top: 16px; border-top: 1px solid var(--border); padding-top: 14px; }
.dverify-title { font-size: 14px; font-weight: 700; margin-bottom: 10px; }
.dcheck {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--panel);
  font-size: 13px; margin-bottom: 8px;
  animation: dfade 0.35s ease both;
}
.dcheck .ic { width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; font-weight: 800; flex-shrink: 0; }
.dcheck.pass .ic { background: rgba(52, 211, 153, 0.2); color: #34d399; }
.dcheck.fail .ic { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.dcheck .tx { color: var(--text); flex: 1; }
.dcheck .rs { font-size: 12px; }
.dcheck.pass .rs { color: #34d399; }
.dcheck.fail .rs { color: #fbbf24; }

/* 完成卡 */
.ddone { text-align: center; padding: 40px 20px; animation: dfade 0.5s ease both; }
.ddone .big { font-size: 40px; }
.ddone h3 { font-size: 22px; margin: 12px 0 8px; }
.ddone p { color: var(--muted); margin: 0; }

/* 日志 */
.demo-log {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #0a0f1f;
  padding: 14px;
  display: flex;
  flex-direction: column;
}
.demo-log-title { font-size: 13px; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.demo-log ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; max-height: 420px; overflow-y: auto; }
.demo-log li { display: grid; grid-template-columns: 10px 1fr auto; gap: 8px; align-items: start; font-size: 12.5px; animation: dfade 0.35s ease both; }
.demo-log .ldot { width: 7px; height: 7px; border-radius: 50%; margin-top: 5px; }
.demo-log .lrole { color: var(--muted); }
.demo-log .ltx { color: #cbd5e1; }
.demo-log .ltime { color: #64748b; font-size: 11px; white-space: nowrap; }
.demo-log .lline { grid-column: 2 / 4; }

/* 操作区 */
.demo-actions { display: flex; align-items: center; gap: 14px; margin-top: 20px; flex-wrap: wrap; }
.demo-actions .btn:disabled { opacity: 0.5; cursor: not-allowed; }
.demo-status { color: var(--muted); font-size: 13px; }

.demo-foot-note { color: #64748b; font-size: 13px; margin: 24px 0 0; }
.demo-foot-note a { color: var(--accent); }

/* 动画 */
@keyframes dfade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes dslide { to { opacity: 1; transform: none; } }
@keyframes dpop { from { opacity: 0; transform: scale(0.96); } to { opacity: 1; transform: none; } }
@keyframes dflash { 0% { box-shadow: 0 0 0 0 rgba(56,189,248,0.5); } 100% { box-shadow: 0 0 0 8px rgba(56,189,248,0); } }

@media (max-width: 860px) {
  .demo-stage { grid-template-columns: 1fr; }
  .demo-log ul { max-height: 220px; }
}
@media (max-width: 600px) {
  .dkanban { grid-template-columns: 1fr 1fr; }
  .demo-steps li { font-size: 12px; padding: 5px 9px 5px 6px; }
}
@media (prefers-reduced-motion: reduce) {
  .dres, .dnode, .dcard, .dcheck, .demo-log li, .ddone { animation: none !important; opacity: 1 !important; transform: none !important; }
  .dcard .bar > i { transition: none; }
}