/* =====================================================================
   APIS interactive experience shell (public demo).
   Tokens match the APIS platform. Everything is scoped under .exp or
   .exp-brief-overlay so it never affects the rest of the site.
   ===================================================================== */

.exp {
  --bg: #05070d; --surface: #0b0e17; --raised: #10141f; --border: #1f2534; --border-soft: #171b28;
  --fg: #e8eaf2; --muted: #8b91a7; --blue: #4f7dff; --blue-soft: #8aa8ff; --green: #34d399; --rose: #ff6b81; --amber: #f5b942;
  --glow: 0 0 40px -15px #4f7dff;
  font-family: 'Geist', 'Inter', system-ui, sans-serif;
  color: var(--fg);
  background: radial-gradient(ellipse 70% 40% at 50% -10%, rgba(79,125,255,0.14), transparent 70%), var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 30px 80px -30px rgba(0,0,0,0.6), var(--glow);
  overflow: clip; /* clip (not hidden) so the Ask panel can stay sticky */
  font-size: 0.92rem;
  line-height: 1.5;
}
.exp *, .exp *::before, .exp *::after { box-sizing: border-box; }
.exp h3, .exp h4, .exp h5 { font-family: inherit; font-weight: 600; letter-spacing: -0.01em; color: var(--fg); margin: 0; }
.exp h3 { font-size: 1rem; } .exp h4 { font-size: 0.92rem; margin-bottom: 10px; } .exp h5 { font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--blue-soft); margin: 14px 0 6px; font-weight: 600; }
.exp h5 small { text-transform: none; letter-spacing: 0; color: var(--muted); font-weight: 400; margin-left: 4px; }
.exp p { margin: 0; }
.exp small { color: var(--muted); font-weight: 400; }
.exp-sr { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.exp .pos, .exp-brief-doc .pos { color: var(--green); } .exp .neg { color: var(--rose); }

/* ---- bar / buttons ---- */
.exp-bar { display: flex; align-items: center; gap: 14px; padding: 14px 20px; border-bottom: 1px solid var(--border); background: rgba(11,14,23,0.7); flex-wrap: wrap; }
.exp-id { display: flex; align-items: center; gap: 10px; }
.exp-id img { border-radius: 50%; box-shadow: 0 0 0 1px rgba(79,125,255,0.4), 0 0 18px rgba(79,125,255,0.35); }
.exp-id strong { display: block; font-size: 0.95rem; line-height: 1.1; } .exp-id span { font-size: 0.74rem; color: var(--muted); }
.exp-badge { font-size: 0.68rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; color: var(--amber); border: 1px solid rgba(245,185,66,0.35); background: rgba(245,185,66,0.08); }
.exp-bar-actions, .exp-row { display: flex; gap: 8px; margin-left: auto; flex-wrap: wrap; }
.exp-row { margin-left: 0; }
.exp-btn { font: inherit; font-size: 0.82rem; font-weight: 600; color: var(--fg); background: var(--raised); border: 1px solid var(--border); padding: 8px 14px; border-radius: 10px; cursor: pointer; transition: border-color .2s, background .2s, transform .2s; }
.exp-btn:hover { border-color: rgba(79,125,255,0.6); background: #141a2b; }
.exp-btn:focus-visible, .exp button:focus-visible, .exp input:focus-visible, .exp select:focus-visible, .exp [tabindex]:focus-visible, .exp-brief-overlay button:focus-visible { outline: 2px solid var(--blue-soft); outline-offset: 2px; }
.exp-btn-primary { background: linear-gradient(120deg, #4f7dff, #6f93ff); border-color: transparent; color: #fff; }
.exp-btn-primary:hover { background: linear-gradient(120deg, #5b87ff, #7c9cff); border-color: transparent; }
.exp-btn-sm { padding: 5px 10px; font-size: 0.76rem; border-radius: 8px; }
.exp-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---- tabs (narrow screens) ---- */
.exp-tabs { display: none; gap: 4px; padding: 10px 14px 0; border-bottom: 1px solid var(--border); }
.exp-tabs [role="tab"] { font: inherit; font-size: 0.84rem; font-weight: 600; color: var(--muted); background: none; border: 0; padding: 10px 14px; border-bottom: 2px solid transparent; cursor: pointer; }
.exp-tabs [role="tab"][aria-selected="true"] { color: var(--fg); border-bottom-color: var(--blue); }

/* ---- layout ---- */
.exp-body { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 0; }
.exp-main { padding: 20px; display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.exp-side { border-left: 1px solid var(--border); background: rgba(11,14,23,0.55); min-width: 0; }
.exp-ask { padding: 20px; position: sticky; top: 76px; display: flex; flex-direction: column; gap: 12px; max-height: calc(100vh - 96px); }
.exp-pane { display: block; }
.exp-card { background: rgba(11,14,23,0.6); border: 1px solid var(--border); border-radius: 16px; padding: 16px; box-shadow: var(--glow); margin: 0; min-width: 0; }
.exp-card-inner { box-shadow: none; background: rgba(16,20,31,0.6); }
.exp-card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.exp-card-head h3 small { margin-left: 6px; font-size: 0.74rem; }
.exp figcaption { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 8px; font-weight: 600; font-size: 0.9rem; flex-wrap: wrap; }
.exp figcaption small { font-size: 0.72rem; }
.exp-grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.exp-grid2-scn { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); }
.exp-grid2-tight { grid-template-columns: 1fr; gap: 14px; }
.exp-chart { position: relative; height: 250px; } .exp-chart-sl { height: 240px; }
.exp-note { color: var(--muted); font-size: 0.78rem; margin-top: 10px; }
.exp-note-warn { border-left: 2px solid var(--amber); padding-left: 10px; }
.exp-hint { color: var(--muted); font-size: 0.78rem; margin-left: auto; }
.exp-controls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.exp-controls label { font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); font-weight: 600; }
.exp select, .exp input[type="search"], .exp input[type="text"] { font: inherit; font-size: 0.86rem; color: var(--fg); background: var(--raised); border: 1px solid var(--border); border-radius: 10px; padding: 8px 12px; }
.exp input[type="search"] { width: 190px; max-width: 100%; }
.exp-foot { padding: 12px 20px; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.74rem; text-align: center; }

/* ---- KPI cards ---- */
.exp-kpis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.exp-kpi { font: inherit; text-align: left; color: var(--fg); background: rgba(11,14,23,0.6); border: 1px solid var(--border); border-radius: 14px; padding: 14px; cursor: pointer; display: flex; flex-direction: column; gap: 4px; position: relative; transition: border-color .25s, box-shadow .25s, transform .25s; }
.exp-kpi:hover { border-color: rgba(79,125,255,0.5); transform: translateY(-2px); }
.exp-kpi.is-selected { border-color: var(--blue); box-shadow: var(--glow); }
.exp-kpi-top { display: flex; align-items: center; justify-content: space-between; gap: 6px; }
.exp-kpi-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 600; }
.exp-info { width: 18px; height: 18px; border-radius: 50%; border: 1px solid var(--border); color: var(--muted); font-size: 0.68rem; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; font-style: italic; flex: none; }
.exp-info:hover { color: var(--fg); border-color: var(--blue-soft); }
.exp-kpi-val { font-size: 1.6rem; font-weight: 650; letter-spacing: -0.02em; line-height: 1.15; font-variant-numeric: tabular-nums; }
.exp-kpi-cmp { font-size: 0.74rem; color: var(--muted); display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.exp-kpi-spark { margin-top: 2px; display: block; height: 26px; }
.exp-kpi-def { font-size: 0.74rem; color: var(--blue-soft); border-top: 1px solid var(--border-soft); padding-top: 6px; margin-top: 4px; }
.exp-chip { font-size: 0.7rem; font-weight: 600; padding: 1px 7px; border-radius: 999px; background: rgba(255,255,255,0.06); }
.exp-chip-good { color: var(--green); background: rgba(52,211,153,0.12); } .exp-chip-bad { color: var(--rose); background: rgba(255,107,129,0.12); } .exp-chip-flat { color: var(--muted); }

/* ---- tables ---- */
.exp-table-wrap { overflow-x: auto; }
.exp-table { width: 100%; border-collapse: collapse; font-size: 0.8rem; font-variant-numeric: tabular-nums; }
.exp-table th, .exp-table td { padding: 8px 8px; text-align: right; border-bottom: 1px solid var(--border-soft); white-space: nowrap; }
.exp-table th:first-child, .exp-table td:first-child { text-align: left; }
.exp-table thead th { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 600; border-bottom: 1px solid var(--border); }
.exp-table thead th button { font: inherit; text-transform: inherit; letter-spacing: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
.exp-table thead th button:hover { color: var(--fg); }
.exp-table tbody th { font-weight: 500; color: var(--fg); white-space: normal; }
.exp-table tbody tr[data-exp], .exp-table tbody tr[data-sl] { cursor: pointer; transition: background .2s; }
.exp-table tbody tr[data-exp]:hover, .exp-table tbody tr[data-sl]:hover { background: rgba(79,125,255,0.07); }
.exp-table tr.is-selected { background: rgba(79,125,255,0.14); box-shadow: inset 3px 0 0 var(--blue); }
.exp-table tfoot th, .exp-table tfoot td { border-top: 1px solid var(--border); border-bottom: 0; font-weight: 650; }
.exp-table small { font-size: 0.7rem; margin-left: 4px; }
.exp-empty { text-align: center !important; color: var(--muted); padding: 18px !important; }
.exp-flash { animation: exp-flash 1.1s ease-out; }
@keyframes exp-flash { 0% { background: rgba(79,125,255,0.45); } 100% { background: rgba(79,125,255,0.14); } }
.exp-kpi.exp-flash { animation: exp-flashk 1.1s ease-out; } @keyframes exp-flashk { 0% { box-shadow: 0 0 0 3px rgba(79,125,255,0.6); } 100% { box-shadow: var(--glow); } }

/* ---- scenario ---- */
.exp-sliders { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 24px; margin-bottom: 16px; }
.exp-slider label { display: block; font-size: 0.8rem; color: var(--paper-dim, #b4bbd0); margin-bottom: 4px; }
.exp-slider-row { display: flex; align-items: center; gap: 12px; }
.exp-slider output { min-width: 52px; text-align: right; font-weight: 650; font-variant-numeric: tabular-nums; color: var(--blue-soft); }
.exp input[type="range"] { flex: 1; accent-color: var(--blue); height: 4px; }
.exp-scn-out { margin-bottom: 14px; }
.exp-attr { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.exp-attr li { display: flex; justify-content: space-between; gap: 10px; font-size: 0.84rem; padding: 8px 10px; background: rgba(255,255,255,0.03); border-radius: 8px; }
.exp-attr em { color: var(--muted); font-style: normal; margin-left: 4px; }
.exp-details { margin-top: 14px; border-top: 1px solid var(--border-soft); padding-top: 12px; }
.exp-details summary { cursor: pointer; font-weight: 600; font-size: 0.84rem; color: var(--blue-soft); }
.exp-formulas { margin: 10px 0 0; padding-left: 18px; color: #c2c8dc; font-size: 0.8rem; display: flex; flex-direction: column; gap: 4px; }
.exp-notmodeled { margin-top: 14px; } .exp-notmodeled ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 0.8rem; columns: 2; }
.exp #scnSaved { margin-top: 14px; }

/* ---- Ask APIS ---- */
.exp-ask h3 { font-size: 1.05rem; }
.exp-chips { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.exp-chips-label { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); font-weight: 600; margin-right: 2px; }
.exp-chipbtn { font: inherit; font-size: 0.76rem; color: var(--blue-soft); background: rgba(79,125,255,0.08); border: 1px solid rgba(79,125,255,0.3); border-radius: 999px; padding: 5px 11px; cursor: pointer; text-align: left; transition: background .2s, border-color .2s; }
.exp-chipbtn:hover { background: rgba(79,125,255,0.18); border-color: var(--blue); color: #fff; }
.exp-thread { display: flex; flex-direction: column; gap: 14px; overflow-y: auto; min-height: 60px; flex: 1; padding-right: 2px; }
.exp-q { font-weight: 600; font-size: 0.86rem; color: var(--fg); background: rgba(79,125,255,0.12); border: 1px solid rgba(79,125,255,0.25); padding: 8px 12px; border-radius: 12px 12px 12px 4px; }
.exp-a { margin-top: 8px; padding: 12px; border: 1px solid var(--border); border-radius: 12px; background: rgba(16,20,31,0.7); font-size: 0.84rem; }
.exp-a ul { margin: 0; padding-left: 18px; color: #c2c8dc; } .exp-a p { color: #c2c8dc; }
.exp-a .exp-ans-main { color: var(--fg); font-weight: 550; font-size: 0.9rem; margin-top: 6px; }
.exp-a.is-loading { color: var(--muted); display: flex; align-items: center; gap: 8px; }
.exp-spin { width: 14px; height: 14px; border-radius: 50%; border: 2px solid rgba(79,125,255,0.3); border-top-color: var(--blue); animation: exp-spin .8s linear infinite; }
@keyframes exp-spin { to { transform: rotate(360deg); } }
.exp-ans-badges { display: flex; gap: 6px; flex-wrap: wrap; }
.exp-tag { font-size: 0.66rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; padding: 2px 8px; border-radius: 999px; color: var(--blue-soft); background: rgba(79,125,255,0.12); border: 1px solid rgba(79,125,255,0.3); }
.exp-tag-muted { color: var(--muted); background: rgba(255,255,255,0.04); border-color: var(--border); }
.exp-evidence-list { display: flex; flex-direction: column; gap: 6px; }
.exp-evidence { font: inherit; text-align: left; color: var(--fg); background: rgba(79,125,255,0.07); border: 1px solid rgba(79,125,255,0.28); border-radius: 10px; padding: 7px 10px; cursor: pointer; display: flex; flex-direction: column; gap: 1px; transition: background .2s, border-color .2s; }
.exp-evidence:hover { background: rgba(79,125,255,0.16); border-color: var(--blue); }
.exp-evidence b { font-size: 0.74rem; color: var(--blue-soft); font-weight: 600; } .exp-evidence span { font-size: 0.78rem; color: #c2c8dc; font-variant-numeric: tabular-nums; }
.exp-ask-form { display: flex; gap: 8px; } .exp-ask-form input { flex: 1; min-width: 0; }

/* ---- brief overlay (appended to <body>) ---- */
body.exp-modal-open { overflow: hidden; }
.exp-brief-overlay { position: fixed; inset: 0; z-index: 3000; background: rgba(2,4,10,0.78); backdrop-filter: blur(6px); display: flex; align-items: center; justify-content: center; padding: 24px; font-family: 'Geist', 'Inter', system-ui, sans-serif; }
.exp-brief { width: min(920px, 100%); max-height: 100%; background: #0b0e17; border: 1px solid #1f2534; border-radius: 18px; display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 0 60px -20px #4f7dff; color: #e8eaf2; }
.exp-brief-bar { display: flex; align-items: center; gap: 12px; padding: 12px 18px; border-bottom: 1px solid #1f2534; flex-wrap: wrap; }
.exp-brief-bar .exp-bar-actions { margin-left: auto; }
.exp-brief-overlay .exp-btn { font: inherit; font-size: 0.82rem; font-weight: 600; color: #e8eaf2; background: #10141f; border: 1px solid #1f2534; padding: 8px 14px; border-radius: 10px; cursor: pointer; }
.exp-brief-overlay .exp-btn-primary { background: linear-gradient(120deg, #4f7dff, #6f93ff); border-color: transparent; color: #fff; }
.exp-brief-overlay .exp-badge { font-size: 0.68rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; color: #f5b942; border: 1px solid rgba(245,185,66,.35); background: rgba(245,185,66,.08); }
.exp-brief-scroll { overflow-y: auto; padding: 8px 36px 36px; }
.exp-brief-doc { max-width: 760px; margin: 0 auto; font-size: 0.92rem; line-height: 1.6; color: #d4d9ea; }
.exp-brief-doc .kicker { margin-top: 22px; font-size: .72rem; text-transform: uppercase; letter-spacing: .14em; color: #8aa8ff; font-weight: 600; }
.exp-brief-doc h1 { font-family: inherit; font-size: 1.7rem; line-height: 1.2; margin: 6px 0 4px; color: #fff; letter-spacing: -.02em; }
.exp-brief-doc h2 { font-family: inherit; font-size: 1.02rem; margin: 26px 0 8px; color: #fff; padding-top: 14px; border-top: 1px solid #1f2534; }
.exp-brief-doc h2 small { color: #8b91a7; font-weight: 400; }
.exp-brief-doc .meta { color: #8b91a7; font-size: .8rem; }
.exp-brief-doc .banner { margin: 14px 0; padding: 10px 14px; border: 1px solid rgba(245,185,66,.35); background: rgba(245,185,66,.07); color: #f5d28a; border-radius: 10px; font-size: .82rem; }
.exp-brief-doc ul, .exp-brief-doc ol { padding-left: 20px; margin: 6px 0; } .exp-brief-doc li { margin-bottom: 4px; }
.exp-brief-doc table { width: 100%; border-collapse: collapse; font-size: .8rem; margin: 8px 0; font-variant-numeric: tabular-nums; }
.exp-brief-doc th, .exp-brief-doc td { border-bottom: 1px solid #1f2534; padding: 7px 8px; text-align: right; } .exp-brief-doc th:first-child, .exp-brief-doc td:first-child { text-align: left; }
.exp-brief-doc thead th { color: #8b91a7; font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; }
.exp-brief-doc .note { color: #8b91a7; font-size: .78rem; } .exp-brief-doc .foot { margin-top: 24px; border-top: 1px solid #1f2534; padding-top: 12px; }

/* ---- responsive ---- */
@media (max-width: 1180px) {
  .exp-body { grid-template-columns: 1fr; }
  .exp-tabs { display: flex; }
  .exp-main .exp-pane, .exp-side { display: none; }
  .exp[data-pane="dashboard"] #pane-dashboard, .exp[data-pane="scenario"] #pane-scenario, .exp[data-pane="ask"] #pane-ask { display: block; }
  .exp-side { border-left: 0; border-top: 0; } .exp-ask { position: static; max-height: none; }
  .exp-kpis { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .exp { border-radius: 14px; }
  .exp-main { padding: 12px; } .exp-ask { padding: 14px; }
  .exp-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .exp-grid2, .exp-grid2-tight, .exp-grid2-scn, .exp-sliders { grid-template-columns: 1fr; }
  .exp-notmodeled ul { columns: 1; }
  .exp-bar { padding: 12px 14px; } .exp-bar-actions { width: 100%; } .exp-bar-actions .exp-btn { flex: 1; }
  .exp-hint { margin-left: 0; width: 100%; }
  .exp-brief-overlay { padding: 8px; } .exp-brief-scroll { padding: 4px 16px 24px; }
}
@media (max-width: 430px) { .exp-kpi-val { font-size: 1.3rem; } .exp-kpis { gap: 8px; } .exp-kpi { padding: 11px; } }

@media (prefers-reduced-motion: reduce) {
  .exp *, .exp-brief-overlay * { animation: none !important; transition: none !important; }
}
@media print {
  body.exp-printing > *:not(.exp-brief-overlay) { display: none !important; }
  body.exp-printing .exp-brief-overlay { position: static; background: #fff; padding: 0; display: block; backdrop-filter: none; }
  body.exp-printing .exp-brief { max-height: none; border: 0; box-shadow: none; background: #fff; color: #111; width: 100%; }
  body.exp-printing .exp-brief-bar { display: none; }
  body.exp-printing .exp-brief-scroll { overflow: visible; padding: 0; }
  body.exp-printing .exp-brief-doc, body.exp-printing .exp-brief-doc h1, body.exp-printing .exp-brief-doc h2 { color: #111; }
  body.exp-printing .exp-brief-doc th, body.exp-printing .exp-brief-doc td { border-color: #ccc; color: #222; }
  body.exp-printing .exp-brief-doc .banner { color: #7a5a00; background: #fff8e6; }
}

/* ---- Business Idea Investigator form ---- */
.exp-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 18px; }
.exp-field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.exp-field.wide { grid-column: 1 / -1; }
.exp-field label { font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 600; }
.exp-field small { text-transform: none; letter-spacing: 0; font-weight: 400; }
.exp input[type="number"], .exp textarea { font: inherit; font-size: 0.88rem; color: var(--fg); background: var(--raised); border: 1px solid var(--border); border-radius: 10px; padding: 8px 12px; width: 100%; }
.exp textarea { resize: vertical; min-height: 64px; }
.exp-status { display: inline-block; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; padding: 2px 8px; border-radius: 6px; }
.exp-status-Missing, .exp-status-None { color: var(--rose); background: rgba(255,107,129,0.12); }
.exp-status-Assumption, .exp-status-Thin, .exp-status-Stated { color: var(--amber); background: rgba(245,185,66,0.12); }
.exp-status-Some { color: var(--green); background: rgba(52,211,153,0.12); }
.exp-list { margin: 0; padding-left: 18px; color: #c2c8dc; font-size: 0.86rem; display: flex; flex-direction: column; gap: 6px; }
.exp-list .lvl-high { color: var(--rose); font-weight: 600; } .exp-list .lvl-medium { color: var(--amber); font-weight: 600; }
.exp-actions-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
@media (max-width: 760px) { .exp-form { grid-template-columns: 1fr; } }

/* Loading state: the platform's "APIS" word pulsing through the brand gradient (see ApisThinkingIndicator in the app) */
.exp-think { font-weight: 700; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.2em; background: linear-gradient(90deg, #9b6bff, #ff5c8a, #f5b942, #9b6bff); background-size: 200% 100%; -webkit-background-clip: text; background-clip: text; color: transparent; animation: exp-think 1.8s ease-in-out infinite; }
@keyframes exp-think { 0%, 100% { background-position: 0 0; opacity: 0.6; } 50% { background-position: 100% 0; opacity: 1; } }