* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--booker-cream); color: var(--booker-plum); font-family: var(--font-brand); font-size: 1rem; line-height: 1.6; }
a { color: inherit; text-underline-offset: .2em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--booker-plum); outline-offset: 5px; }
.dark :focus-visible { outline-color: var(--booker-cream); }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.08; }
h1 { font-size: clamp(44px, 6vw, 88px); letter-spacing: -.055em; max-width: 13ch; margin-bottom: 2rem; }
h2 { font-size: var(--type-section); letter-spacing: -.04em; margin-bottom: 1.5rem; }
h3 { font-size: 1.3rem; letter-spacing: -.025em; }
p { max-width: 70ch; }
code { font-size: .9em; overflow-wrap: anywhere; }
.wrap { width: min(calc(100% - 3rem), 80rem); margin-inline: auto; }
header { padding-block: 1.5rem; border-bottom: 1px solid var(--booker-border); }
.topbar { display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.wordmark-label { font-weight: 800; font-size: 1.5rem; letter-spacing: -.05em; }
.metadata { font-size: .875rem; color: var(--booker-muted); }
.intro { padding-block: 5rem 3rem; }
.intro p { font-size: 1.2rem; }
.accent { color: var(--booker-coral); }
.muted, figcaption { color: var(--booker-muted); }
.note { border-left: 3px solid var(--booker-marigold); padding: .5rem 1rem; font-size: .95rem; }
nav { display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; padding-block: 1.5rem; border-top: 1px solid var(--booker-border); }
section { padding-block: 4rem; border-bottom: 1px solid var(--booker-border); scroll-margin-top: 1rem; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; }
.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { background: white; padding: 1.75rem; border: 1px solid var(--booker-border); border-radius: var(--radius-card); }
.card p:last-child { margin-bottom: 0; }
.tag { display: inline-block; font-size: .7rem; text-transform: uppercase; letter-spacing: .1em; border: 1px solid currentColor; border-radius: 99px; padding: .2rem .6rem; margin-bottom: 1rem; }
figure { margin: 2rem 0; }
figure img { border-radius: 1rem; border: 1px solid var(--booker-border); }
figcaption { font-size: .875rem; margin-top: .75rem; }
.palette { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1rem; }
.swatch { border: 1px solid var(--booker-border); border-radius: 1rem; overflow: hidden; background: white; }
.swatch-color { height: 9rem; background: var(--swatch); color: var(--sample, var(--booker-plum)); display: flex; align-items: flex-end; padding: 1.25rem; font-size: 2.75rem; font-weight: 700; letter-spacing: -.06em; border-bottom: 1px solid var(--booker-border); }
.swatch-info { padding: 1.25rem; }
.swatch h4 { font-size: 1rem; margin: 0 0 .35rem; }
.swatch code { font-size: .875rem; }
.swatch p { margin: .85rem 0 0; font-size: .875rem; line-height: 1.55; color: var(--booker-muted); }
.swatch small { display: block; margin-top: 1rem; font-family: monospace; font-size: .75rem; overflow-wrap: anywhere; color: var(--booker-muted); }
.palette-heading { margin-top: 2.5rem; margin-bottom: 1rem; }
.palette-functional { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 2rem; }
.palette-caption { font-size: .9rem; color: var(--booker-muted); margin-top: 1rem; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin-block: 1.5rem; text-align: left; }
th, td { padding: 1rem .75rem; border-bottom: 1px solid var(--booker-border); vertical-align: top; }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; }
ul, ol { padding-left: 1.3rem; }
li { margin-bottom: .5rem; }
.type-display { font-size: clamp(2.5rem, 5vw, 5rem); line-height: 1; font-weight: 800; letter-spacing: -.05em; }
.dark { --focus-color: var(--booker-cream); background: var(--booker-plum); color: var(--booker-cream); padding: 2rem; border-radius: 1rem; }
.dark p { color: inherit; }
.samples { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-block: 1.5rem; }
.status { display: inline-block; background: var(--booker-mint); color: var(--booker-plum); border-radius: 99px; padding: .25rem .65rem; font-weight: 700; }
.ui-sample { box-shadow: var(--shadow-card); max-width: 24rem; }
.field { display: grid; gap: .5rem; max-width: 24rem; font-weight: 700; }
input { font: inherit; padding: .85rem 1rem; border: 1px solid var(--booker-muted); border-radius: .5rem; width: 100%; color: var(--booker-plum); background: white; }
footer { padding-block: 3rem; }
/* Live specimens use the shared system; these rules only arrange the guide. */
.subheading { margin: 3rem 0 1rem; }
.type-specimens { border-top: 1px solid var(--booker-border); margin: 2rem 0; }
.type-row { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 2rem; align-items: center; padding: 2rem 0; border-bottom: 1px solid var(--booker-border); }
.type-row h3 { font-size: 1rem; margin-bottom: .5rem; }
.type-row > p { margin: 0; }
.type-row > div p, .type-row code { font-size: .75rem; color: var(--booker-muted); margin: .5rem 0 0; }
.space-scale { display: flex; flex-wrap: wrap; gap: 1.5rem; align-items: end; margin: 2rem 0; padding: 2rem; background: white; border-radius: var(--radius-card); }
.space-step { display: flex; flex-direction: column; gap: .75rem; font-size: .8rem; }
.space-bar { height: 40px; background: var(--booker-coral); border-radius: 3px; }
.gap-demo { display: flex; align-items: center; margin: 1.5rem 0; }
.gap-demo i { width: 48px; height: 40px; border-radius: var(--radius-control); background: var(--booker-mint); }
.shape-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2rem; }
.shape-grid h4 { margin: 1rem 0 .5rem; }
.shape-grid p { font-size: .9rem; color: var(--booker-muted); }
.radius-demo { height: 100px; background: var(--booker-marigold); border: 1px solid var(--booker-plum); }
.elevation-grid { padding: 1rem 0 2rem; }
.raised { box-shadow: var(--shadow-card); }
.floating { box-shadow: var(--shadow-floating); }
.photo-studies { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; }
.photo-studies figure { min-width: 0; }
.photo-stage { height: 340px; border: 1px solid var(--booker-border); border-radius: var(--radius-panel); overflow: hidden; position: relative; isolation: isolate; }
.photo-stage img { border: 0; border-radius: 0; position: absolute; height: 95%; width: 100%; object-fit: contain; object-position: center bottom; bottom: 0; z-index: 1; }
.cutout-stage { background: repeating-conic-gradient(#fff 0% 25%,#f1ede7 0% 50%) 50% / 24px 24px; }
.study-yellow { position: absolute; width: 66%; height: 93%; top: 1%; left: 12%; background: url('assets/blob-marigold.png') center / 100% 100% no-repeat; }
.study-coral { position: absolute; width: 46%; height: 65%; bottom: 3%; right: 0; background: url('assets/blob-coral.png') center / 100% 100% no-repeat; }
.study-update { position: absolute; bottom: 22px; left: 10%; width: 80%; z-index: 2; border: 1px solid var(--booker-border); border-radius: var(--radius-card); padding: 12px; background: white; box-shadow: var(--shadow-card); display: grid; gap: 6px; justify-items: start; font-size: .75rem; }
.surface-preview { margin: 2rem 0 1rem; }
.surface-preview > input { appearance: none; width: 16px; height: 16px; padding: 0; border: 1px solid var(--booker-plum); border-radius: 50%; margin: 0 .4rem 0 0; vertical-align: middle; }
.surface-preview > input:checked { background: var(--booker-plum); box-shadow: inset 0 0 0 3px var(--booker-cream); }
.surface-preview > label { margin-right: 1.5rem; cursor: pointer; font-size: .9rem; }
.component-canvas { margin-top: 1.5rem; padding: 2rem; background: white; border: 1px solid var(--booker-border); border-radius: var(--radius-panel); }
#surface-dark:checked ~ .component-canvas { background: var(--booker-plum); color: var(--booker-cream); --focus-color: var(--booker-cream); }
.button-family + .button-family { margin-top: 2rem; border-top: 1px solid var(--booker-border); padding-top: 1.5rem; }
.button-family h4 { margin: 0 0 1.25rem; font-size: 1.1rem; }
.state-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.75rem 1rem; }
.state-example { display: flex; flex-direction: column; align-items: flex-start; gap: .75rem; min-width: 0; padding: 5px; }
.state-example > span { font-size: .8rem; }
.state-example .button { max-width: 100%; font-size: 14px; padding: 15px 22px; }
.feedback-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; margin-block: 1.5rem; }
.feedback-grid h4 { font-size: 1.1rem; margin: 1.5rem 0 .75rem; }
.feedback-grid .booker-badge { font-size: .875rem; }
.field-error { color: var(--booker-plum); font-size: .875rem; margin: .75rem 0 0; }
input[aria-invalid='true'] { border: 2px solid var(--booker-plum); box-shadow: 0 3px 0 var(--booker-coral); }
.composition-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
.layout-study { border: 1px solid var(--booker-border); background: white; border-radius: var(--radius-panel); padding: 24px; position: relative; overflow: hidden; }
.wide-study { display: grid; grid-template-columns: 1fr 1fr; min-height: 355px; align-items: center; }
.layout-study strong { display: block; font-size: 22px; line-height: 1.05; letter-spacing: -.04em; }
.layout-study strong > span { color: var(--booker-coral); }
.study-copy p { font-size: 12px; margin: 16px 0; }
.mini-button { background: var(--booker-coral); color: var(--booker-plum); font-size: 10px; font-weight: 700; border-radius: var(--radius-pill); display: inline-block; padding: 10px 12px; }
.mini-stack { font-size: 10px; margin-top: 48px; }
.study-media { position: relative; height: 285px; }
.study-media:before { content: ''; position: absolute; inset: 30px 10px 10px; background: var(--booker-marigold); border-radius: 40% 34% 44% 37%; transform: rotate(-20deg); }
.study-media img { position: relative; height: 100%; width: 100%; object-fit: contain; border: 0; border-radius: 0; }
.mini-journey { display: flex; gap: 6px; }
.study-media .mini-journey { position: absolute; bottom: 30px; left: -15%; width: 125%; }
.mini-journey span { background: var(--booker-cream); color: var(--booker-plum); padding: 12px 8px; text-align: center; flex: 1; font-size: 10px; border: 1px solid var(--booker-border); border-radius: 6px; }
.mini-journey span:last-child { background: var(--booker-mint); }
.narrow-study { max-width: 285px; margin-inline: auto; }
.narrow-study > .mini-button { margin-top: 12px; }
.narrow-study .study-media { height: 170px; margin-top: 15px; }
.narrow-study > .mini-journey { flex-direction: column; }
.architecture-study { display: flex; align-items: center; justify-content: space-around; gap: 16px; padding: 32px; background: var(--booker-plum); color: var(--booker-cream); border-radius: var(--radius-panel); }
.architecture-study strong { background: var(--booker-cream); color: var(--booker-plum); padding: 24px; border-radius: var(--radius-card); }
.live-preview { border: 1px solid var(--booker-border); border-radius: var(--radius-card); margin-top: 2rem; padding: 1.5rem; }
.live-preview summary { cursor: pointer; font-weight: 700; padding: .25rem; }
.live-preview p { margin: 1rem 0; }
.live-preview iframe { display: block; width: 100%; height: 800px; border: 1px solid var(--booker-border); background: var(--booker-cream); }
@media(max-width:1000px) { .photo-studies { grid-template-columns: 1fr; } .photo-stage { max-width: 480px; } .photo-studies figure { margin-block: 1rem; } .type-row { grid-template-columns: 140px minmax(0, 1fr); } .type-row .type-hero { font-size: clamp(40px, 5.5vw, 64px); } }
@media(max-width:700px) { .type-row { grid-template-columns: 1fr; gap: 1rem; } .shape-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .state-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .component-canvas { padding: 1.25rem; } .state-example .button { font-size: 12px; padding: 12px; min-height: 48px; gap: 6px; } .composition-grid, .feedback-grid { grid-template-columns: 1fr; } .wide-study { padding: 16px; min-height: 270px; } .wide-study .study-media { height: 220px; } .layout-study strong { font-size: 18px; } .architecture-study { flex-direction: column; } .architecture-study > span[aria-hidden] { transform: rotate(90deg); } .surface-preview > label { margin-right: .75rem; font-size: .8rem; } }
@media (max-width: 800px) { .grid { grid-template-columns: 1fr; } .palette { grid-template-columns: repeat(2, minmax(0, 1fr)); } .intro { padding-top: 3rem; } section { padding-block: 3rem; } }
@media (max-width: 480px) { .wrap { width: calc(100% - 2rem); } .topbar { align-items: flex-start; flex-direction: column; } .card { padding: 1.25rem; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print { nav { display: none; } body { background: white; } section { break-inside: avoid; } .wrap { width: 100%; } }