@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@700;800&family=Nunito+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --bpb-blue: #1971c2;
  --bpb-blue-dark: #1864ab;
  --bpb-blue-soft: #e7f5ff;
  --bpb-red: #e3000b;
  --bpb-yellow: #ffcf00;
  --bpb-green: #00af4d;
  --bpb-ink: #1a1d21;
  --bpb-text: #212529;
  --bpb-text-dimmed: #66707a;
  --bpb-surface: #fff;
  --bpb-bg: #f7f7f6;
  --bpb-border: #e9ecef;
  --bpb-shadow-sm: 0 1px 3px rgba(16, 24, 40, .05);
  --bpb-shadow-md: 0 4px 12px rgba(16, 24, 40, .08);
  --bpb-shadow-lg: 0 12px 28px rgba(16, 24, 40, .12);
  --bpb-radius: 12px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--bpb-text); background: var(--bpb-bg);
  font-family: 'Nunito Sans', sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
button, input { font: inherit; }
:focus-visible { outline: 2px solid var(--bpb-blue); outline-offset: 3px; }
::selection { color: var(--bpb-ink); background: var(--bpb-yellow); }

.skip-link { position: fixed; left: 8px; top: 8px; z-index: 50; padding: 10px 14px;
  color: #fff; background: var(--bpb-ink); border-radius: 8px; transform: translateY(-160%); }
.skip-link:focus { transform: none; }
.site-header { position: sticky; top: 0; z-index: 20; height: 70px; background: #ffffffe8;
  border: 0; box-shadow: 0 2px 12px rgba(16,24,40,.05); backdrop-filter: blur(14px); }
.site-header::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 4px;
  background: linear-gradient(90deg,var(--bpb-red) 0 25%,var(--bpb-yellow) 25% 50%,var(--bpb-blue) 50% 75%,var(--bpb-green) 75%); }
.header-inner { width: min(1180px, calc(100% - 40px)); height: 100%; margin: auto;
  display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 48px; height: 48px; }
.brand-copy { display: grid; gap: 2px; }
.wordmark { color: var(--bpb-ink); font-family: Montserrat, sans-serif; font-weight: 800;
  letter-spacing: .3px; line-height: 1; }
.wordmark .accent { color: var(--bpb-blue-dark); }
.wordmark .domain { color: var(--bpb-text-dimmed); font-size: .75em; font-weight: 600; }
.tagline { color: var(--bpb-text-dimmed); font-size: 12px; font-weight: 500; }
.nav-link { padding: 9px 15px; color: #495057; border-radius: 999px; text-decoration: none;
  font-size: 14px; font-weight: 600; transition: background .2s, color .2s; }
.nav-link:hover { color: var(--bpb-blue-dark); background: var(--bpb-blue-soft); }

.hero { position: relative; isolation: isolate; overflow: hidden;
  background: linear-gradient(180deg,#eaf2f8 0%,var(--bpb-bg) 100%); border-bottom: 1px solid var(--bpb-border); }
.hero::before { content: ''; position: absolute; inset: 0; z-index: -1;
  background-image: radial-gradient(circle,rgba(26,29,33,.055) 3.5px,transparent 4.5px);
  background-size: 42px 42px; background-position: 14px 14px;
  mask-image: linear-gradient(180deg,#000,transparent 88%); }
.hero-inner { width: min(850px, calc(100% - 40px)); margin: auto; padding: 82px 0 78px; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 16px; padding: 7px 12px;
  color: var(--bpb-blue-dark); background: #fff; border: 1px solid #d0ebff; border-radius: 999px;
  box-shadow: var(--bpb-shadow-sm); font-size: 13px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; }
h1, h2, h3 { margin: 0; color: var(--bpb-ink); font-family: Montserrat, sans-serif; }
h1 { font-size: clamp(38px,6vw,66px); line-height: 1.04; letter-spacing: -.045em; }
.hero h1 span { color: var(--bpb-blue-dark); }
.hero p { max-width: 680px; margin: 22px auto 0; color: var(--bpb-text-dimmed);
  font-size: clamp(17px,2vw,20px); line-height: 1.65; }
.hero-actions { display: flex; justify-content: center; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px;
  padding: 0 20px; border: 1px solid transparent; border-radius: 999px; text-decoration: none;
  cursor: pointer; font-weight: 800; transition: transform .2s, box-shadow .2s, background .2s; }
.button.primary { color: #fff; background: var(--bpb-blue-dark); box-shadow: 0 4px 12px #1864ab35; }
.button.secondary { color: #495057; background: #fff; border-color: var(--bpb-border); }
.button:hover { transform: translateY(-2px); box-shadow: var(--bpb-shadow-md); }

.showcases { width: min(1180px, calc(100% - 40px)); margin: auto; padding: 68px 0 88px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 28px; }
.section-heading h2 { font-size: clamp(26px,4vw,36px); letter-spacing: -.025em; }
.section-heading p { max-width: 520px; margin: 8px 0 0; color: var(--bpb-text-dimmed); line-height: 1.55; }
.set-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 22px; }
.set-card { position: relative; overflow: hidden; display: flex; flex-direction: column; min-height: 100%;
  background: var(--bpb-surface); border: 1px solid var(--bpb-border); border-radius: 16px;
  box-shadow: var(--bpb-shadow-sm); transition: transform .25s,box-shadow .25s,border-color .25s; }
.set-card:hover { transform: translateY(-6px); border-color: #d0d7de; box-shadow: var(--bpb-shadow-lg); }
.card-link { position: absolute; inset: 0; z-index: 4; border-radius: inherit; }
.set-art { position: relative; display: grid; place-items: center; aspect-ratio: 4/3; overflow: hidden;
  background: radial-gradient(circle at 65% 30%,color-mix(in srgb,var(--set-accent) 22%,white),transparent 42%),
    linear-gradient(135deg,#f8f9fa,#fff); }
.set-art::before { content: ''; position: absolute; inset: 0;
  background-image: radial-gradient(circle,rgba(26,29,33,.07) 3px,transparent 4px);
  background-size: 36px 36px; opacity: .6; mask-image: linear-gradient(135deg,#000,transparent 78%); }
.set-art img.cover { width: 100%; height: 100%; object-fit: cover; transform: scale(1.34); transition: transform .35s; }
.set-card:hover .set-art img.cover { transform: scale(1.4); }
.brick-motif { position: relative; width: 128px; height: 88px; transform: rotate(-7deg); }
.brick-motif span { position: absolute; display: block; height: 40px; border-radius: 8px;
  box-shadow: inset 0 -8px 0 #0001,0 12px 24px #1a1d2120; }
.brick-motif span::before { content: ''; position: absolute; left: 13px; top: -8px; width: 20px; height: 11px;
  border-radius: 50%; background: inherit; box-shadow: 36px 0 0 currentColor,72px 0 0 currentColor; }
.brick-motif .one { left: 0; top: 5px; width: 110px; color: var(--set-accent); background: var(--set-accent); }
.brick-motif .two { right: 0; bottom: 0; width: 110px; color: var(--bpb-yellow); background: var(--bpb-yellow); }
.set-number-badge { position: absolute; left: 14px; top: 14px; z-index: 2; padding: 6px 9px;
  color: #495057; background: #fffffff0; border: 1px solid #fff; border-radius: 7px;
  box-shadow: var(--bpb-shadow-sm); font-size: 12px; font-weight: 800; }
.card-body { display: flex; flex: 1; flex-direction: column; padding: 20px; }
.card-meta { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 12px; }
.badge { padding: 4px 8px; color: var(--bpb-text-dimmed); background: #f8f9fa;
  border: 1px solid var(--bpb-border); border-radius: 5px; font-size: 12px; font-weight: 600; }
.card-body h3 { font-size: 19px; line-height: 1.25; letter-spacing: -.015em; }
.card-body p { flex: 1; margin: 10px 0 18px; color: var(--bpb-text-dimmed); line-height: 1.55; }
.card-stats { display: flex; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--bpb-border);
  color: var(--bpb-text-dimmed); font-size: 13px; font-weight: 700; }
.card-action { color: var(--bpb-blue-dark); }
.loading-message,.error-message { grid-column: 1/-1; padding: 40px; text-align: center;
  color: var(--bpb-text-dimmed); background: #fff; border: 1px solid var(--bpb-border); border-radius: 16px; }

.how { padding: 72px 20px; background: #fff; border-top: 1px solid var(--bpb-border); }
.how-inner { width: min(900px,100%); margin: auto; text-align: center; }
.how h2 { font-size: 30px; }
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; margin-top: 34px; }
.step-icon { display: grid; place-items: center; width: 52px; height: 52px; margin: 0 auto 14px;
  color: var(--bpb-blue-dark); background: var(--bpb-blue-soft); border-radius: 50%; font-weight: 800; }
.steps h3 { font-size: 16px; }
.steps p { margin: 7px 0 0; color: var(--bpb-text-dimmed); font-size: 14px; line-height: 1.5; }
.site-footer { padding: 22px 20px; color: var(--bpb-text-dimmed); background: #fffffff2;
  border-top: 1px solid var(--bpb-border); font-size: 13px; }
.footer-inner { width: min(1180px,100%); margin: auto; display: flex; justify-content: space-between; gap: 24px; }
.legal-note { max-width: 740px; }

/* Public replay */
body.public-viewer { height: 100dvh; overflow: hidden; }
.viewer-header { position: fixed; inset: 0 0 auto; }
.viewer-title { min-width: 0; text-align: center; }
.viewer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 4px 16px; }
.viewer-title strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  color: var(--bpb-ink); font-family: Montserrat,sans-serif; font-size: 14px; }
.viewer-title span { color: var(--bpb-text-dimmed); font-size: 12px; }
.viewer-shell { position: fixed; inset: 70px 0 0; overflow: hidden; --accent: var(--set-accent,#1971c2);
  --studio-accent: #9db3c6; --studio-companion: #c5b2c4; --studio-highlight: #edf3f6;
  --studio-center: #fbfcfc; --studio-key-x: 66%; --studio-key-y: 38%;
  --studio-secondary-x: 18%; --studio-secondary-y: 82%; --studio-angle: 145deg;
  background:
    radial-gradient(circle at var(--studio-key-x) var(--studio-key-y), color-mix(in srgb,var(--studio-accent) 27%,transparent), transparent 42%),
    radial-gradient(circle at var(--studio-secondary-x) var(--studio-secondary-y), color-mix(in srgb,var(--studio-companion) 20%,transparent), transparent 38%),
    linear-gradient(var(--studio-angle),var(--studio-highlight),var(--studio-center) 48%,#f7f7f5); }
#canvasHolder { position: absolute; inset: 0; }
#canvasHolder canvas { display: block; width: 100%; height: 100%; }
#loading { position: absolute; inset: 0; z-index: 8; display: grid; place-items: center;
  color: var(--bpb-text-dimmed); background: #f7f7f6ee; transition: opacity .3s; }
#loading.done { opacity: 0; pointer-events: none; }
.loader-card { width: min(360px,calc(100% - 40px)); padding: 24px; text-align: center;
  background: #fff; border: 1px solid var(--bpb-border); border-radius: 16px; box-shadow: var(--bpb-shadow-lg); }
.loader-brick { width: 44px; height: 28px; margin: 0 auto 16px; background: var(--bpb-blue); border-radius: 5px;
  animation: bob 1.2s ease-in-out infinite; }
.loader-brick::before { content: ''; display: block; width: 10px; height: 6px; margin: -5px 0 0 7px;
  color: var(--bpb-blue); background: currentColor; border-radius: 50%; box-shadow: 20px 0 currentColor; }
@keyframes bob { 50% { transform: translateY(-7px) rotate(2deg); } }
#error { display: none; position: absolute; inset: 20px; z-index: 10; place-items: center; text-align: center; color: #c92a2a; }
#stepCard { position: absolute; left: 18px; top: 18px; z-index: 4; padding: 10px 13px;
  background: #ffffffe8; border: 1px solid #fff; border-radius: 10px; box-shadow: var(--bpb-shadow-md); backdrop-filter: blur(10px); }
#stepCard small { display: block; color: var(--bpb-text-dimmed); font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
#stepCard strong { display: block; color: var(--bpb-ink); font-size: 17px; }
#newParts { color: var(--bpb-blue-dark); font-size: 11px; font-weight: 700; }
.viewer-controls { position: absolute; left: 50%; bottom: 18px; z-index: 6; width: min(940px,calc(100% - 28px));
  transform: translateX(-50%); display: grid; grid-template-columns: auto auto minmax(120px,1fr) auto auto auto auto;
  align-items: center; gap: 10px; padding: 10px; background: #fffffff0; border: 1px solid #fff;
  border-radius: 16px; box-shadow: var(--bpb-shadow-lg); backdrop-filter: blur(14px); }
.control-button { display: grid; place-items: center; min-width: 40px; height: 40px; padding: 0 12px;
  color: #495057; background: #fff; border: 1px solid var(--bpb-border); border-radius: 999px; cursor: pointer; }
.control-button.primary { min-width: 46px; color: #fff; background: var(--bpb-blue-dark); border-color: var(--bpb-blue-dark); }
.timeline { min-width: 100px; }
#stepRange { width: 100%; margin: 0; accent-color: var(--bpb-blue-dark); cursor: pointer; }
#progressText { color: var(--bpb-text-dimmed); font-size: 12px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.mode-switch { display: flex; padding: 3px; background: #f1f3f5; border-radius: 999px; }
.mode-switch button { min-height: 34px; padding: 0 12px; color: var(--bpb-text-dimmed); background: transparent;
  border: 0; border-radius: 999px; cursor: pointer; font-size: 12px; font-weight: 800; }
.mode-switch button[aria-pressed='true'] { color: var(--bpb-blue-dark); background: #fff; box-shadow: var(--bpb-shadow-sm); }
.sound-toggle { display: grid; place-items: center; min-width: 40px; height: 40px; cursor: pointer;
  color: #495057; background: #fff; border: 1px solid var(--bpb-border); border-radius: 999px; }
.sound-toggle input { position: absolute; opacity: 0; pointer-events: none; }
.sound-toggle:has(input:checked) { color: #fff; background: var(--bpb-blue-dark); border-color: var(--bpb-blue-dark); }
.runtime-only,#viewStyles,#cameraCueMarks { display: none !important; }

@media (max-width: 820px) {
  .set-grid,.steps { grid-template-columns: 1fr; }
  .set-grid { max-width: 520px; margin: auto; }
  .hero-inner { padding: 58px 0; }
  .section-heading { display: block; }
  .nav-link { display: none; }
  .viewer-header .brand-copy { display: none; }
  .viewer-title { text-align: left; }
  .viewer-controls { grid-template-columns: auto auto minmax(90px,1fr) auto auto auto; }
  .mode-switch { position: absolute; left: 50%; bottom: 62px; transform: translateX(-50%); box-shadow: var(--bpb-shadow-md); }
  #progressText { display: none; }
  .footer-inner { display: grid; }
}

@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* Separate the build status and destinations without blocking the canvas. */
.viewer-top-bar { position: absolute; top: 18px; left: 18px; right: 18px; z-index: 4; display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; pointer-events: none; }
.viewer-top-bar #stepCard { position: static; min-width: 0; overflow-wrap: anywhere; pointer-events: auto; }
.build-links { display: flex; flex-shrink: 0; gap: 4px 14px; padding: 7px 13px; background: #ffffffe8; border: 1px solid #fff; border-radius: 10px; box-shadow: var(--bpb-shadow-md); backdrop-filter: blur(10px); pointer-events: auto; }
@media (max-width: 600px) { .build-links { flex-direction: column; gap: 0; } }
.build-links:empty { display: none; }
.build-link { display: inline-flex; align-items: center; min-height: 32px; font-size: 12px; font-weight: 600; color: var(--bpb-blue-dark); text-decoration: none; border-radius: 4px; }
.build-link:hover { text-decoration: underline; }
.build-link:focus-visible { outline: 2px solid var(--bpb-blue); outline-offset: 3px; }