/* ─────────────────────────────────────────────────────────────
   Page 11 — Data Viz
   ───────────────────────────────────────────────────────────── */

/* Foundational shapes — three big animated specimens */
.dataviz-foundations {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.dv-foundation {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 0;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 100% at 100% 0%, rgba(47,55,255,0.06), transparent 65%),
    rgba(255,255,255,0.02);
}
@media (max-width: 820px) {
  .dv-foundation { grid-template-columns: 1fr; }
  .dv-foundation .stage { border-right: 0 !important; border-bottom: 1px solid var(--border-subtle); }
}
.dv-foundation .stage {
  position: relative;
  min-height: 280px;
  padding: 32px 36px;
  background: rgba(0,0,0,0.18);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}
.dv-foundation .stage.daylight {
  background: #FFFFFF;
}
.dv-foundation .info {
  padding: 32px 36px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.dv-foundation .info .ix {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-300);
}
.dv-foundation .info h3 {
  font-size: 26px;
  letter-spacing: -0.02em;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--fg-default);
}
.dv-foundation .info .gloss {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-secondary);
  margin: 0;
}
.dv-foundation .info .rules {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: grid;
  gap: 8px;
}
.dv-foundation .info .rules li {
  display: grid;
  grid-template-columns: 20px 1fr;
  font-size: 12.5px;
  color: var(--fg-secondary);
  line-height: 1.5;
  gap: 8px;
  align-items: baseline;
}
.dv-foundation .info .rules li::before {
  content: "→";
  color: var(--blue-300);
  font-family: var(--font-mono);
  font-size: 12px;
}
.dv-foundation .info .where {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  text-transform: uppercase;
}
.dv-foundation .info .where b {
  color: var(--fg-default);
  font-weight: 500;
  display: block;
  font-family: var(--font-sans);
  font-size: 12.5px;
  letter-spacing: -0.005em;
  text-transform: none;
  margin-top: 4px;
}

/* Sparkline animation */
.dv-spark {
  width: 100%;
  max-width: 460px;
  height: 200px;
}
.dv-spark .grid-h {
  stroke: rgba(0,0,0,0.06);
  stroke-width: 1;
}
.dv-foundation .stage.nightfall .dv-spark .grid-h { stroke: rgba(255,255,255,0.06); }
.dv-spark .axis {
  stroke: rgba(0,0,0,0.18);
  stroke-width: 1;
}
.dv-foundation .stage.nightfall .dv-spark .axis { stroke: rgba(255,255,255,0.22); }
.dv-spark .tick {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  fill: #767781;
  text-transform: uppercase;
}
.dv-foundation .stage.nightfall .dv-spark .tick { fill: rgba(255,255,255,0.55); }
.dv-spark .area {
  fill: rgba(26,60,179,0.10);
  opacity: 0;
  transition: opacity 800ms ease 1600ms;
}
.dv-foundation.is-revealed .dv-spark .area { opacity: 1; }
.dv-spark .line {
  fill: none;
  stroke: #1A3CB3;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  transition: stroke-dashoffset 1800ms cubic-bezier(0.22, 1, 0.36, 1) 200ms;
}
.dv-foundation.is-revealed .dv-spark .line { stroke-dashoffset: 0; }
.dv-spark .anchor {
  fill: #1A3CB3;
  stroke: #FFFFFF;
  stroke-width: 2;
  opacity: 0;
  transition: opacity 600ms ease 1800ms;
}
.dv-foundation.is-revealed .dv-spark .anchor { opacity: 1; }
.dv-spark .anchor-label {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  fill: #000;
  text-anchor: end;
  opacity: 0;
  transition: opacity 600ms ease 2000ms;
}
.dv-foundation.is-revealed .dv-spark .anchor-label { opacity: 1; }

/* Dimension bars */
.dv-dim {
  width: 100%;
  max-width: 420px;
  display: grid;
  gap: 14px;
}
.dv-dim .row {
  display: grid;
  grid-template-columns: 80px 1fr 36px;
  align-items: center;
  gap: 14px;
}
.dv-dim .row .label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}
.dv-foundation .stage.daylight .dv-dim .row .label { color: #767781; }
.dv-dim .row .bar-track {
  height: 18px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
}
.dv-foundation .stage.daylight .dv-dim .row .bar-track { background: rgba(0,0,0,0.05); }
.dv-dim .row .bar-fill {
  height: 100%;
  background: #FFFFFF;
  border-radius: 3px;
  width: 0%;
  transition: width 1600ms cubic-bezier(0.22, 1, 0.36, 1);
}
.dv-foundation.is-revealed .dv-dim .row .bar-fill {
  width: var(--w, 70%);
}
.dv-foundation.is-revealed .dv-dim .row:nth-child(1) .bar-fill { transition-delay: 300ms; }
.dv-foundation.is-revealed .dv-dim .row:nth-child(2) .bar-fill { transition-delay: 500ms; }
.dv-foundation.is-revealed .dv-dim .row:nth-child(3) .bar-fill { transition-delay: 700ms; }
.dv-foundation.is-revealed .dv-dim .row:nth-child(4) .bar-fill { transition-delay: 900ms; }
.dv-dim .row .pct {
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(255,255,255,0.78);
  text-align: right;
}
.dv-foundation .stage.daylight .dv-dim .row .pct { color: #000; }

/* Lifecycle flow */
.dv-flow {
  width: 100%;
  max-width: 460px;
  height: 220px;
}
.dv-flow .dot {
  fill: rgba(255,255,255,0.16);
  transition: fill 400ms ease;
}
.dv-flow .dot.active {
  fill: #FFFFFF;
}
.dv-foundation .stage.daylight .dv-flow .dot { fill: #DADADD; }
.dv-foundation .stage.daylight .dv-flow .dot.active { fill: #000; }
.dv-flow .label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  fill: rgba(255,255,255,0.55);
}
.dv-foundation .stage.daylight .dv-flow .label { fill: #767781; }
.dv-flow .path {
  fill: none;
  stroke: rgba(255,255,255,0.18);
  stroke-width: 1.5;
  stroke-dasharray: 3 4;
}
.dv-foundation .stage.daylight .dv-flow .path { stroke: #DADADD; }
.dv-flow .progress {
  fill: none;
  stroke: #FFFFFF;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 800;
  stroke-dashoffset: 800;
  transition: stroke-dashoffset 2200ms cubic-bezier(0.22, 1, 0.36, 1) 200ms;
}
.dv-foundation .stage.daylight .dv-flow .progress { stroke: #000; }
.dv-foundation.is-revealed .dv-flow .progress { stroke-dashoffset: 200; }
.dv-flow .pulse {
  fill: #69FDF8;
  filter: drop-shadow(0 0 8px rgba(105,253,248,0.6));
  opacity: 0;
  transition: opacity 600ms ease 2200ms;
}
.dv-foundation.is-revealed .dv-flow .pulse {
  opacity: 1;
  animation: dvFlowPulse 2.4s ease-in-out infinite 2400ms;
}
@keyframes dvFlowPulse {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(4px); }
}

@media (prefers-reduced-motion: reduce) {
  .dv-spark .line, .dv-spark .area, .dv-spark .anchor, .dv-spark .anchor-label,
  .dv-dim .row .bar-fill, .dv-flow .progress, .dv-flow .pulse {
    transition: none !important;
    animation: none !important;
  }
  .dv-foundation .dv-spark .line { stroke-dashoffset: 0 !important; }
  .dv-foundation .dv-spark .area, .dv-foundation .dv-spark .anchor, .dv-foundation .dv-spark .anchor-label { opacity: 1 !important; }
  .dv-foundation .dv-dim .row .bar-fill { width: var(--w, 70%) !important; }
  .dv-foundation .dv-flow .progress { stroke-dashoffset: 200 !important; }
  .dv-foundation .dv-flow .pulse { opacity: 1 !important; }
}

/* Trend indicators row */
.trend-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
@media (max-width: 900px) { .trend-row { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .trend-row { grid-template-columns: 1fr; } }
.trend-card {
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  padding: 22px 22px 22px;
  background: rgba(255,255,255,0.02);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.trend-card .ix {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-300);
}
.trend-card .glyph {
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: var(--fg-default);
}
.trend-card .glyph .delta {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--green-300);
  font-weight: 400;
}
.trend-card .glyph .delta.down { color: var(--orange-300); }
.trend-card .glyph .delta.flat { color: var(--fg-muted); }
.trend-card .name {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.trend-card .desc {
  font-size: 12.5px;
  color: var(--fg-secondary);
  line-height: 1.5;
  margin: 0;
}

/* Comparative bars — stacked variant + grouped variant */
.compare-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 820px) { .compare-row { grid-template-columns: 1fr; } }
.compare-card {
  padding: 28px 28px 28px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  background: rgba(255,255,255,0.02);
}
.compare-card h4 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.012em;
  margin: 0 0 18px;
  color: var(--fg-default);
}
.compare-card .stacked {
  display: grid;
  gap: 10px;
}
.compare-card .stacked .row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 12px;
  align-items: center;
}
.compare-card .stacked .label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.compare-card .stacked .stack {
  display: flex;
  height: 22px;
  border-radius: 3px;
  overflow: hidden;
  background: rgba(255,255,255,0.06);
}
.compare-card .stacked .seg {
  display: flex;
  align-items: center;
  padding: 0 8px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.8);
  white-space: nowrap;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1600ms cubic-bezier(0.22, 1, 0.36, 1);
}
.compare-card.is-revealed .stacked .seg { transform: scaleX(1); }
.compare-card.is-revealed .stacked .row:nth-child(1) .seg { transition-delay: 200ms; }
.compare-card.is-revealed .stacked .row:nth-child(2) .seg { transition-delay: 350ms; }
.compare-card.is-revealed .stacked .row:nth-child(3) .seg { transition-delay: 500ms; }
.compare-card.is-revealed .stacked .row:nth-child(4) .seg { transition-delay: 650ms; }

.compare-card .grouped {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 14px;
  align-items: end;
  height: 200px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 12px;
}
.compare-card .grouped .group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  align-items: end;
  height: 100%;
}
.compare-card .grouped .bar {
  background: var(--blue-400);
  border-radius: 2px 2px 0 0;
  height: var(--h, 60%);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 1400ms cubic-bezier(0.22, 1, 0.36, 1);
}
.compare-card .grouped .bar.b { background: var(--blue-200); }
.compare-card.is-revealed .grouped .bar { transform: scaleY(1); }
.compare-card.is-revealed .grouped .group:nth-child(1) .bar { transition-delay: 200ms; }
.compare-card.is-revealed .grouped .group:nth-child(2) .bar { transition-delay: 350ms; }
.compare-card.is-revealed .grouped .group:nth-child(3) .bar { transition-delay: 500ms; }
.compare-card.is-revealed .grouped .group:nth-child(4) .bar { transition-delay: 650ms; }
.compare-card .grouped-labels {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 14px;
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  text-align: center;
  text-transform: uppercase;
}
.compare-card .legend {
  display: flex;
  gap: 16px;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  text-transform: uppercase;
}
.compare-card .legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.compare-card .legend span::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--blue-400);
}
.compare-card .legend span.b::before { background: var(--blue-200); }

@media (prefers-reduced-motion: reduce) {
  .compare-card .stacked .seg, .compare-card .grouped .bar {
    transform: none !important;
    transition: none !important;
  }
}

/* Empty state */
.empty-state {
  padding: 56px 56px 60px;
  border-radius: var(--radius-2xl);
  background:
    radial-gradient(ellipse 60% 80% at 50% 50%, rgba(47,55,255,0.12), transparent 65%),
    rgba(255,255,255,0.02);
  border: 1px solid var(--border-default);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.empty-state .scene {
  width: 200px;
  height: 200px;
  margin: 0 auto 28px;
  position: relative;
}
.empty-state .scene svg { width: 100%; height: 100%; overflow: visible; }
.empty-state .scene .ring {
  fill: none;
  stroke: rgba(133,160,255,0.32);
  stroke-width: 1;
  transform-origin: center;
  transform-box: fill-box;
  animation: spin 24s linear infinite;
}
.empty-state .scene .ring.r2 { animation: spin 16s linear infinite reverse; stroke: rgba(195,179,255,0.24); }
.empty-state .scene .pulse {
  fill: #FFFFFF;
  animation: emptyPulse 2.8s ease-in-out infinite;
}
@keyframes emptyPulse {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.1); }
}
.empty-state h3 {
  font-size: clamp(24px, 2.6vw, 32px);
  letter-spacing: -0.022em;
  font-weight: 600;
  margin: 0 0 10px;
  color: var(--fg-default);
}
.empty-state p {
  font-size: 14.5px;
  color: var(--fg-secondary);
  line-height: 1.55;
  margin: 0;
  max-width: 44ch;
  margin-inline: auto;
}
.empty-state .meta {
  margin-top: 32px;
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid rgba(133,160,255,0.32);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-300);
}

@media (prefers-reduced-motion: reduce) {
  .empty-state .scene .ring, .empty-state .scene .pulse {
    animation: none !important;
  }
}

/* Data viz don'ts */
.viz-donts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 820px) { .viz-donts { grid-template-columns: 1fr; } }
.viz-dont {
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: rgba(255,255,255,0.02);
}
.viz-dont .stage {
  height: 160px;
  display: grid;
  place-items: center;
  padding: 18px;
  position: relative;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(0,0,0,0.18);
}
.viz-dont .stage .viz-art {
  position: relative;
  z-index: 1;
}
/* The orange strike is drawn inside each SVG (.viz-strike) so it stays
   locked to the chart geometry — a CSS overlay can't track descending bars. */
.viz-dont .stage .viz-strike {
  stroke: var(--orange-500);
  stroke-width: 2;
  stroke-linecap: round;
}
.viz-dont .meta {
  padding: 14px 18px 18px;
}
.viz-dont .x {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange-300);
  margin-bottom: 4px;
}
.viz-dont h5 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin: 0 0 4px;
  color: var(--fg-default);
}
.viz-dont p {
  font-size: 12px;
  color: var(--fg-muted);
  line-height: 1.5;
  margin: 0;
}