/* Demo page — interactive split, sized to fit the viewport (no page scroll). */
.demo-stage { min-height: calc(100dvh - 100px); display: flex; align-items: center; padding: 2rem var(--gutter-lg); overflow: hidden; }
.ds-grid { position: relative; z-index: 1; width: 100%; max-width: 1340px; margin: 0 auto; display: grid; gap: var(--space-6); grid-template-columns: 1fr; align-items: center; }
@media (min-width: 1000px) { .ds-grid { grid-template-columns: 0.58fr 1.42fr; gap: var(--space-7); } }

/* ---- left: copy + jobs (compact) ---- */
.ds-copy .eyebrow { color: var(--bronze); }
.ds-copy h1 { color: #fff; margin: 8px 0 12px; font-size: clamp(2.5rem, 3.2vw, 3.9rem); line-height: 1.06; }
.ds-copy .lede { color: rgba(242,235,220,.74); margin-bottom: 20px; max-width: 40ch; font-size: 1.65rem; }
.ds-jobs { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.ds-job { display: flex; align-items: center; gap: 11px; text-align: left; width: 100%; cursor: pointer;
  background: rgba(255,255,255,.04); border: 1px solid rgba(242,235,220,.12); border-radius: 12px; padding: 10px 13px;
  color: var(--canvas); font: 500 14.5px var(--font-sans); letter-spacing: var(--tracking); transition: transform .25s ease, border-color .25s ease, background .25s ease; }
.ds-job:hover { transform: translateX(4px); border-color: rgba(127,200,160,.45); background: rgba(127,200,160,.07); }
.ds-job.active { border-color: var(--bronze); background: rgba(200,153,104,.10); box-shadow: inset 3px 0 0 var(--bronze); }
.ds-job .ds-job-ic { width: 30px; height: 30px; flex: none; border-radius: 8px; display: grid; place-items: center; background: rgba(127,200,160,.14); color: #cfe6d8; }
.ds-job.active .ds-job-ic { background: var(--bronze); color: #0E2B2A; }
.ds-job .ds-job-go { margin-left: auto; opacity: 0; transition: opacity .25s; color: var(--bronze); }
.ds-job:hover .ds-job-go, .ds-job.active .ds-job-go { opacity: 1; }
.ds-ctas { display: flex; flex-wrap: wrap; gap: 10px; }
.ds-ctas .btn { padding: 11px 20px; font-size: 1.4rem; }
.ds-ctas .btn--primary { background: var(--bronze); border-color: var(--bronze); color: var(--brand-teal-deep); }
.ds-ctas .btn--outline { border-color: rgba(242,235,220,.4); color: var(--canvas); }

/* ---- right: the window (bigger) in a pool of light ---- */
.ds-window-wrap { position: relative; display: flex; justify-content: center; }
.ds-window-wrap::before { content: ''; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); width: 112%; height: 108%; z-index: 0;
  background: radial-gradient(50% 50% at 50% 45%, rgba(127,200,160,.28), transparent 70%); filter: blur(16px); pointer-events: none; }
.ds-window { position: relative; z-index: 1; width: 100%; max-width: 720px;
  background: linear-gradient(180deg, rgba(48,96,89,.97), rgba(20,53,50,.98)); backdrop-filter: blur(14px);
  border: 1px solid rgba(127,200,160,.40); border-radius: 18px; overflow: hidden;
  box-shadow: 0 50px 100px rgba(0,0,0,.55), 0 0 80px rgba(127,200,160,.20), inset 0 1px 0 rgba(255,255,255,.10); }
.ds-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid rgba(242,235,220,.12); }
.ds-bar .d { width: 11px; height: 11px; border-radius: 50%; background: rgba(242,235,220,.22); }
.ds-bar .t { margin-left: 9px; font: 600 12.5px var(--font-sans); color: rgba(242,235,220,.78); }
.ds-live { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; font: 700 10px var(--font-sans); letter-spacing: .12em; text-transform: uppercase; color: #9fe0c0; }
.ds-live i { width: 7px; height: 7px; border-radius: 50%; background: #36d399; animation: dc-pulse 1.8s ease-out infinite; }

/* ---- chat (height capped so the stage never exceeds the viewport) ---- */
.ds-chat > * { flex-shrink: 0; }
.ds-chat { position: relative; padding: 18px 20px; display: flex; flex-direction: column; gap: 12px; min-height: 380px; max-height: min(66vh, 520px); overflow-y: auto; scroll-behavior: smooth; }
.ds-msg { max-width: 84%; padding: 11px 15px; font: 14px/1.5 var(--font-sans); border-radius: 14px; animation: ds-pop .35s ease both; }
.ds-msg.ai { align-self: flex-start; background: rgba(242,235,220,.07); border: 1px solid rgba(242,235,220,.12); border-bottom-left-radius: 4px; color: var(--canvas); }
.ds-msg.user { align-self: flex-end; background: var(--brand-teal-accent); color: #fff; border-bottom-right-radius: 4px; }
.ds-skill-card { align-self: stretch; background: rgba(255,255,255,.04); border: 1px solid rgba(242,235,220,.12); border-radius: 13px; padding: 12px 15px; animation: ds-pop .35s ease both; }
.ds-skill-head { font: 600 13px var(--font-sans); color: #9fe0c0; display: flex; align-items: center; gap: 8px; }
.ds-steps { margin-top: 10px; display: flex; flex-direction: column; gap: 8px; }
.ds-step { display: flex; align-items: center; gap: 10px; font: 13px var(--font-sans); color: rgba(242,235,220,.82); }
.ds-step.pending { opacity: .45; }
.ds-ck { width: 18px; height: 18px; flex: none; border-radius: 50%; display: grid; place-items: center; background: rgba(242,235,220,.12); border: 1px solid rgba(242,235,220,.2); position: relative; }
.ds-step.done .ds-ck { background: var(--brand-teal-accent); border-color: var(--brand-teal-accent); }
.ds-step.done .ds-ck::after { content: '\2713'; color: #fff; font-size: 11px; font-weight: 700; }
.ds-step.run .ds-ck::after { content: ''; position: absolute; inset: 2px; border-radius: 50%; border: 2px solid rgba(242,235,220,.25); border-top-color: #9fe0c0; animation: hg-spin .7s linear infinite; }
.ds-art { align-self: stretch; background: #FFFDF7; color: #243430; border-radius: 13px; padding: 14px 16px; animation: ds-pop .4s ease both; box-shadow: 0 16px 40px rgba(0,0,0,.3); }
.ds-art-title { font: 600 14px var(--font-sans); margin-bottom: 7px; color: #0E2B2A; }
.ds-art-line { font: 12.5px var(--font-sans); color: #51605b; padding-left: 16px; position: relative; margin-top: 5px; }
.ds-art-line::before { content: ''; position: absolute; left: 0; top: 7px; width: 6px; height: 6px; border-radius: 50%; background: var(--brand-teal); }
.ds-art-cta { display: inline-flex; align-items: center; gap: 6px; margin-top: 11px; background: var(--bronze); color: #0E2B2A; font: 600 12.5px var(--font-sans); padding: 8px 14px; border-radius: 9px; }
@keyframes ds-pop { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---- cream running animation (matches the demo shown to Matthew) ---- */
.ds-skill-card { background: #FAF8F3; border: 1px solid #ece7da; }
.ds-skill-head { color: #1F4E4A; }
.ds-step { color: #46544f; }
.ds-ck { background: #fff; border: 1px solid #d9d4c6; }
.ds-step.done .ds-ck { background: var(--brand-teal); border-color: var(--brand-teal); }
.ds-step.run .ds-ck::after { border-color: #ded8c8; border-top-color: var(--brand-teal); }

/* ---- typing indicator (live feel) ---- */
.ds-typing { align-self: flex-start; background: rgba(242,235,220,.07); border: 1px solid rgba(242,235,220,.12); border-radius: 14px; border-bottom-left-radius: 4px; padding: 13px 16px; display: flex; gap: 5px; }
.ds-typing span { width: 7px; height: 7px; border-radius: 50%; background: rgba(242,235,220,.5); animation: ds-blink 1.2s infinite; }
.ds-typing span:nth-child(2) { animation-delay: .2s; }
.ds-typing span:nth-child(3) { animation-delay: .4s; }
@keyframes ds-blink { 0%,60%,100% { opacity: .25; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-3px); } }

/* ---- artefact actions: open + download ---- */
.ds-art-actions { display: flex; gap: 8px; margin-top: 12px; align-items: center; }
.ds-art-cta { margin-top: 0; cursor: pointer; }
.ds-art-dl { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; background: transparent; border: 1px solid #d9d4c6; color: #1F4E4A; font: 600 12.5px var(--font-sans); padding: 8px 13px; border-radius: 9px; }
.ds-art-dl:hover { background: #f0ece0; }

/* ---- bottom bar: suggested questions + free chat ---- */
.ds-input { border-top: 1px solid rgba(242,235,220,.12); padding: 12px 16px; background: rgba(16,46,44,.45); }
.ds-chips { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 10px; }
.ds-chip { cursor: pointer; background: rgba(255,255,255,.05); border: 1px solid rgba(242,235,220,.16); color: rgba(242,235,220,.85); font: 500 12px var(--font-sans); padding: 7px 12px; border-radius: 50px; transition: border-color .2s, background .2s; }
.ds-chip:hover { border-color: rgba(127,200,160,.5); background: rgba(127,200,160,.10); }
.ds-field { display: flex; gap: 8px; align-items: center; }
.ds-field input { flex: 1; background: rgba(255,255,255,.05); border: 1px solid rgba(242,235,220,.16); border-radius: 50px; padding: 11px 16px; color: #fff; font: 14px var(--font-sans); outline: none; }
.ds-field input::placeholder { color: rgba(242,235,220,.42); }
.ds-field input:focus { border-color: rgba(127,200,160,.55); }
.ds-send { flex: none; width: 40px; height: 40px; border-radius: 50%; border: none; cursor: pointer; background: var(--bronze); color: #0E2B2A; display: grid; place-items: center; }
.ds-send:hover { filter: brightness(1.08); }

/* shorter chat so the window (chat + input bar) still fits the viewport */
.ds-chat { position: relative; min-height: 380px; max-height: min(66vh, 520px); }

/* ---- locked free-chat: a deliberate teaser, not a dead box ---- */
.ds-field--locked { position: relative; opacity: .9; }
.ds-field--locked input { cursor: not-allowed; color: rgba(242,235,220,.4); filter: blur(.3px); }
.ds-field--locked input::placeholder { color: rgba(242,235,220,.42); }
.ds-lock { color: rgba(242,235,220,.5); flex: none; }
.ds-unlock { flex: none; display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; font: 600 12.5px var(--font-sans); color: var(--bronze); background: rgba(200,153,104,.12); border: 1px solid rgba(200,153,104,.4); padding: 8px 13px; border-radius: 50px; text-decoration: none; transition: background .2s; }
.ds-unlock:hover { background: rgba(200,153,104,.2); }