/* Rotterdam in Numbers: page styles.
   Scoped to .numbers-* blocks; header and footer keep the site look.
   Tokens come from variables.css, new ones carry the --num- prefix. */

:root {
  color-scheme: light dark;

  --num-bg: var(--paper);
  --num-bg-alt: var(--sand);
  --num-text: var(--ink);
  --num-text-soft: var(--ink2);
  --num-muted: #3f6272;
  --num-heading: var(--ink);
  --num-line: rgba(22, 49, 63, 0.18);
  --num-card: #ffffff;
  --num-card-edge: rgba(22, 49, 63, 0.12);
  --num-card-shadow: 0 18px 40px rgba(22, 49, 63, 0.12);
  --num-accent: var(--accent-600);
  --num-link: var(--accent-700);
  --num-pad-x: clamp(18px, 6vw, 96px);

  /* The hero is dark in both schemes: it hosts the WebGL stage. */
  --num-hero-bg: #0d1c25;
  --num-hero-text: #f3efe8;
  --num-hero-soft: #c9d6dc;
  --num-hero-accent: #f08b79;
}

@media (prefers-color-scheme: dark) {
  :root {
    --num-bg: #0f212b;
    --num-bg-alt: #0b1920;
    --num-text: #e7e2d9;
    --num-text-soft: #c5d1d7;
    --num-muted: #a9bac3;
    --num-heading: #f6f1e8;
    --num-line: rgba(231, 226, 217, 0.16);
    --num-card: #162d39;
    --num-card-edge: rgba(231, 226, 217, 0.14);
    --num-card-shadow: 0 18px 44px rgba(0, 0, 0, 0.45);
    --num-accent: #f08b79;
    --num-link: #f4a090;
  }
}

/* sticky children (task 3) need a scroll container that is not main itself */
main:has(> .numbers-hero) {
  overflow-x: clip;
}

/* ---------- hero ---------- */
/* Frame, overlay, text and type come from .page-hero in sections.css, like every
   other subpage. This file only adds the 3D layer in place of the photo. */
.numbers-hero {
  isolation: isolate;
}

.numbers-hero__stage {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

/* Static frame of the 3D scene: always present, the canvas fades in on top once it has drawn. */
.numbers-hero__fallback,
.numbers-hero__fallback img,
.numbers-hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.numbers-hero__fallback img {
  object-fit: contain;
  object-position: 100% 50%;
  transition: opacity 0.9s ease;
}

.numbers-hero__canvas {
  opacity: 0;
  transition: opacity 1.2s ease;
}

.numbers-hero.is-3d-ready .numbers-hero__canvas {
  opacity: 1;
}

.numbers-hero.is-3d-ready .numbers-hero__fallback img {
  opacity: 0;
}

@media (max-aspect-ratio: 6/5) {
  .numbers-hero__fallback img {
    object-position: 50% 0%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .numbers-hero__fallback img,
  .numbers-hero__canvas {
    transition: none;
  }
}

.numbers-intro {
  margin: 0 0 clamp(28px, 5vh, 48px);
}

/* ---------- sections ---------- */
/* Width, padding and spacing come from .content-section like on every other
   page; main carries the background so the dark scheme still works. */
main:has(> .numbers-hero) {
  background: var(--num-bg);
}

.numbers-section {
  color: var(--num-text);
}

/* The breadcrumb now sits on main's dark background in the dark scheme. */
@media (prefers-color-scheme: dark) {
  main:has(> .numbers-hero) .breadcrumb-nav a { color: var(--num-muted); }
  main:has(> .numbers-hero) .breadcrumb-nav li[aria-current="page"] { color: var(--num-heading); }
  main:has(> .numbers-hero) .breadcrumb-nav li + li::before { color: var(--num-muted); }
}

/* Size and weight come from the sitewide .tier-heading rule. */
.numbers-section .tier-heading {
  color: var(--num-heading);
  text-wrap: balance;
}

.numbers-section h3 {
  color: var(--num-heading);
  text-wrap: balance;
}

.numbers-section .content-lede,
.numbers-note {
  max-width: none;
  color: var(--num-text-soft);
  text-wrap: pretty;
}

.numbers-note {
  font-size: 14px;
  line-height: 1.6;
  margin-top: 24px;
  color: var(--num-muted);
}

.numbers-section a {
  color: var(--num-link);
  text-underline-offset: 3px;
}

.numbers-section sup a {
  text-decoration: none;
  padding: 0 2px;
}

@media (max-width: 599px) {
  .numbers-hero,
  .numbers-section,
  .numbers-sources {
    hyphens: auto;
    -webkit-hyphens: auto;
  }
}

/* ---------- KPI strip ---------- */
.numbers-kpis {
  list-style: none;
  margin: clamp(28px, 5vh, 56px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
  gap: clamp(24px, 3vw, 48px) clamp(20px, 3vw, 48px);
}

.numbers-kpi {
  border-top: 2px solid var(--num-accent);
  padding-top: 18px;
  min-width: 0;
}

/* Figures use the sitewide KPI style (.stats-kpi-value in components.css:
   Jost 700, 26px), measured on things-to-do-in-rotterdam.html. */
.numbers-kpi__value {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.5;
  color: var(--num-heading);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.numbers-kpi__label {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.5;
  color: var(--num-text-soft);
}

/* numbers.js adds .numbers-kpi--rise only to KPIs that start below the viewport,
   so a value already on screen never blinks out and back in. */
.numbers-kpi--rise.is-visible .numbers-kpi__value {
  animation: num-rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) backwards;
}

@keyframes num-rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* ---------- table ---------- */
.numbers-timeline-table {
  width: 100%;
  margin-top: 28px;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
  color: var(--num-text);
}

.numbers-timeline-table caption {
  text-align: left;
  font-size: 14px;
  color: var(--num-muted);
  padding-bottom: 12px;
}

.numbers-timeline-table th,
.numbers-timeline-table td {
  padding: 10px 12px;
  text-align: right;
  border-bottom: 1px solid var(--num-line);
}

.numbers-timeline-table th:first-child,
.numbers-timeline-table thead th:first-child {
  text-align: left;
}

.numbers-timeline-table thead th {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--num-muted);
}

.numbers-timeline-table tbody th {
  font-weight: 500;
  color: var(--num-heading);
}

@media (max-width: 599px) {
  .numbers-timeline-table th,
  .numbers-timeline-table td { padding: 8px 6px; font-size: 14px; }
  .numbers-timeline-table thead th { font-size: 12px; }
}

/* ---------- timeline chart ---------- */
.numbers-chart {
  --num-bar: #5f8799;
  --num-bar-on: var(--num-accent);
  margin-top: clamp(24px, 4vh, 44px);
}

@media (prefers-color-scheme: dark) {
  .numbers-chart { --num-bar: #4f7384; }
}

.numbers-chart[hidden] { display: none; }

.numbers-chart__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 14px;
  color: var(--num-text-soft);
  margin-bottom: 10px;
}

.numbers-chart__key::before {
  content: "";
  display: inline-block;
  vertical-align: middle;
  margin-right: 8px;
}

.numbers-chart__key--bar::before {
  width: 14px;
  height: 14px;
  border-radius: 2px;
  background: var(--num-bar);
}

.numbers-chart__key--line::before {
  width: 20px;
  height: 0;
  border-top: 3px solid var(--num-heading);
  margin-bottom: 3px;
}

#timeline-chart {
  width: 100%;
}

.numbers-chart__svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.numbers-chart__grid {
  stroke: var(--num-line);
  stroke-width: 1;
}

.numbers-chart__tick {
  font-family: var(--font-sans);
  font-size: 13px;
  fill: currentColor;
  color: var(--num-muted);
  font-variant-numeric: tabular-nums;
}

.numbers-chart__col { cursor: pointer; }

.numbers-chart__hit { fill: transparent; pointer-events: all; }

.numbers-chart__bar {
  fill: var(--num-bar);
  transition: fill 0.2s ease;
}

.numbers-chart__col:hover .numbers-chart__bar { fill: var(--num-heading); }

.numbers-chart__col.is-active .numbers-chart__bar { fill: var(--num-bar-on); }

.numbers-chart__col.is-active .numbers-chart__tick {
  color: var(--num-heading);
  font-weight: 600;
}

.numbers-chart__line {
  stroke: var(--num-heading);
  stroke-width: 2.5;
  stroke-linejoin: round;
  stroke-linecap: round;
  pointer-events: none;
}

.numbers-chart__dot {
  fill: var(--num-bg-alt);
  stroke: var(--num-heading);
  stroke-width: 2;
  pointer-events: none;
}

.numbers-chart__col.is-active .numbers-chart__dot {
  fill: var(--num-bar-on);
}

.numbers-chart__tick--x.is-minor { display: none; }

/* growth: only when scripts armed the chart (never under reduced motion) */
.numbers-chart__svg.is-armed .numbers-chart__bar {
  transform-box: fill-box;
  transform-origin: 50% 100%;
  transform: scaleY(0);
}

.numbers-chart__svg.is-armed .numbers-chart__line {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
}

.numbers-chart__svg.is-armed .numbers-chart__dot { opacity: 0; }

.numbers-section.is-visible .numbers-chart__svg.is-armed .numbers-chart__bar {
  transform: none;
  transition: transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) calc(var(--i, 0) * 45ms), fill 0.2s ease;
}

.numbers-section.is-visible .numbers-chart__svg.is-armed .numbers-chart__line {
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1.4s ease-out 0.3s;
}

.numbers-section.is-visible .numbers-chart__svg.is-armed .numbers-chart__dot {
  opacity: 1;
  transition: opacity 0.4s ease calc(0.5s + var(--i, 0) * 45ms);
}

.numbers-chart__control {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 18px;
}

.numbers-chart__year {
  font-size: 14px;
  color: var(--num-muted);
}

#timeline-year {
  flex: 1;
  min-width: 0;
  accent-color: var(--num-accent);
  min-height: 44px;
  cursor: pointer;
}

.numbers-chart__live {
  margin: 8px 0 0;
  min-height: 3.2em;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.6;
  color: var(--num-text);
  text-wrap: pretty;
}

.numbers-details {
  margin-top: 28px;
}

.numbers-details summary {
  cursor: pointer;
  color: var(--num-link);
  font-size: 15px;
  min-height: 44px;
  display: flex;
  align-items: center;
  text-underline-offset: 3px;
}

.numbers-details summary:hover { text-decoration: underline; }

/* ---------- origin ---------- */
.numbers-split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 24px;
  margin: 32px 0;
}

.numbers-split > div {
  border-left: 2px solid var(--num-accent);
  padding-left: 18px;
}

.numbers-split dt {
  font-size: 15px;
  color: var(--num-muted);
}

.numbers-split dd {
  margin: 6px 0 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.5;
  color: var(--num-heading);
}

.numbers-top {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  color: var(--num-text);
}

.numbers-top li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--num-line);
}

.numbers-top strong {
  font-variant-numeric: tabular-nums;
  color: var(--num-heading);
}

/* ---------- cards and 3D tilt ---------- */
.numbers-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: clamp(16px, 2vw, 28px);
  margin-top: 32px;
  perspective: 1100px;
}

.numbers-card,
.numbers-tilt {
  background: var(--num-card);
  border: 1px solid var(--num-card-edge);
  border-radius: var(--radius-xl);
  padding: clamp(20px, 2.4vw, 32px);
  box-shadow: var(--num-card-shadow);
  min-width: 0;
  color: var(--num-text);
}

.numbers-tilt {
  --rx: 0deg;
  --ry: 0deg;
  transform-style: preserve-3d;
  transform: rotateX(var(--rx)) rotateY(var(--ry));
  transition: transform 0.18s ease-out;
  will-change: transform;
}

.numbers-tilt.is-tilting {
  transition: none;
}

.numbers-card h3,
.numbers-tilt h3 {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.25;
  color: var(--num-text-soft);
  font-weight: 700;
}

.numbers-card__value {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.5;
  color: var(--num-text);
}

.numbers-card__value strong {
  display: block;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.5;
  color: var(--num-heading);
  font-variant-numeric: tabular-nums;
}

.numbers-card__change {
  display: inline-block;
  margin-left: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--num-accent);
}

/* ---------- sources ---------- */
.numbers-sources {
  background: var(--num-bg-alt);
  color: var(--num-muted);
  text-align: center;
  font-size: 13px;
  line-height: 1.6;
  padding: clamp(36px, 6vh, 64px) var(--num-pad-x);
  border-top: 1px solid var(--num-line);
}

.numbers-sources h2 {
  font-size: 1.1rem;
  color: var(--num-text-soft);
  margin-bottom: 14px;
}

.numbers-sources ol {
  list-style-position: inside;
  margin: 0;
  padding: 0;
}

.numbers-sources li {
  margin: 0 0 8px;
  color: var(--num-muted);
  overflow-wrap: anywhere;
}

.numbers-sources a {
  color: var(--num-link);
  text-underline-offset: 3px;
}

.numbers-sources li:target {
  color: var(--num-heading);
}

.numbers-sources__updated {
  margin: 18px 0 0;
  color: var(--num-muted);
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .numbers-tilt {
    transform: none;
    transition: none;
    will-change: auto;
  }
  .numbers-kpi--rise.is-visible .numbers-kpi__value {
    animation: none;
  }
  .numbers-chart__bar,
  .numbers-chart__line,
  .numbers-chart__dot {
    transition: none !important;
  }
}