/* Stonebridge Book Portfolio V4. All rules are contained within the portfolio. */
.sb-bp4 {
  --bp-text: #f4eadc;
  --bp-muted: #b8aea0;
  --bp-accent: var(--sb-metal-mid, #9f886b);
  --bp-line: rgba(159, 136, 107, .3);
  --bp-surface: #100e0b;
  --bp-serif: var(--serif, "Cormorant Garamond", Georgia, serif);
  --bp-sans: var(--sans, "Inter", Arial, sans-serif);
  position: relative;
  color: var(--bp-text);
  font-family: var(--bp-sans);
  padding: clamp(44px, 5.5vw, 80px) 0;
  scroll-margin-top: 110px;
  isolation: isolate;
}
.sb-bp4 *, .sb-bp4 *::before, .sb-bp4 *::after { box-sizing: border-box; }
.sb-bp4 [hidden] { display: none !important; }
.sb-bp4 .bp-shell { width: min(1240px, 92vw); margin-inline: auto; min-width: 0; }
.sb-bp4 .bp-head { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr); gap: 24px 64px; align-items: end; margin: 0 0 32px; }
.sb-bp4 .bp-kicker { display: block; margin: 0 0 14px; font: 600 11px/1.4 var(--bp-sans); letter-spacing: .18em; text-transform: uppercase; color: var(--bp-accent); }
.sb-bp4 .bp-heading { margin: 0; max-width: 640px; color: var(--bp-text); font: 500 clamp(32px, 3.7vw, 50px)/1.08 var(--bp-serif); letter-spacing: -.025em; text-wrap: balance; }
.sb-bp4 .bp-copy { margin: 0; max-width: 530px; font: 400 14px/1.8 var(--bp-sans); color: var(--bp-muted); }
.sb-bp4 .bp-body, .sb-bp4 .bp-head > * { min-width: 0; }
.sb-bp4 .bp-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px 24px; padding-top: 26px; margin-top: 24px; border-top: 1px solid var(--bp-line); }
.sb-bp4 .bp-link { display: inline-flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 44px; color: var(--bp-text); font: 500 13px/1.5 var(--bp-sans); text-decoration: none; border-bottom: 1px solid var(--bp-accent); border-radius: 0; background: none; padding: 8px 0; }
.sb-bp4 .bp-link:hover { color: #fff; border-color: #e0d2be; }
.sb-bp4 .bp-link span { color: var(--bp-accent); font-size: 19px; }
.sb-bp4 .bp-link--quiet { color: var(--bp-muted); border-color: transparent; }
.sb-bp4 button, .sb-bp4 input, .sb-bp4 select { font-family: var(--bp-sans); }
.sb-bp4 :is(a, button, input, select, [tabindex]):focus-visible { outline: 2px solid #ddcbb0; outline-offset: 5px; }
.sb-bp4 .bp-controls { display: flex; gap: 8px; flex: 0 0 auto; }
.sb-bp4 .bp-arrow { display: inline-grid; place-items: center; width: 46px; height: 46px; padding: 0; border: 1px solid var(--bp-line); border-radius: 50%; background: transparent; color: var(--bp-text); cursor: pointer; font: 400 22px/1 var(--bp-sans); transition: background-color .18s, border-color .18s; }
.sb-bp4 .bp-arrow:hover { border-color: var(--bp-accent); background: rgba(159, 136, 107, .1); }
.sb-bp4 .bp-arrow:disabled { opacity: .28; cursor: default; }
.sb-bp4 .bp-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* Covers keep their original proportions. Recognition never covers the artwork. */
.sb-bp4 .bp-card { display: flex; flex-direction: column; min-width: 0; margin: 0; padding: 0; border: 0; background: none; box-shadow: none; }
.sb-bp4 .bp-art { position: relative; display: grid; place-items: center; min-width: 0; height: 280px; padding: 16px 20px 22px; margin: 0 0 18px; background: radial-gradient(ellipse at 50% 65%, rgba(159, 136, 107, .085), transparent 70%); border-bottom: 1px solid var(--bp-line); }
.sb-bp4 .bp-cover { display: block; width: 100%; height: 100%; min-width: 0; min-height: 0; max-height: 100%; object-fit: contain; filter: drop-shadow(0 12px 12px rgba(0, 0, 0, .32)); }
.sb-bp4 .bp-cover-link { display: grid; grid-template-rows: minmax(0, 1fr); place-items: center; width: 100%; height: 100%; min-height: 0; color: inherit; }
.sb-bp4 .bp-fallback { display: grid; place-items: center; width: 100%; height: 100%; padding: 20px; text-align: center; border: 1px solid var(--bp-line); color: var(--bp-text); background: #17130e; font: 500 25px/1.25 var(--bp-serif); }
.sb-bp4 .bp-service { margin: 0 0 9px; color: var(--bp-accent); font: 600 10px/1.6 var(--bp-sans); letter-spacing: .065em; text-transform: uppercase; overflow-wrap: anywhere; }
.sb-bp4 .bp-book-title { margin: 0 0 8px; color: var(--bp-text); font: 500 25px/1.16 var(--bp-serif); letter-spacing: -.01em; overflow-wrap: anywhere; text-wrap: pretty; }
.sb-bp4 .bp-author { margin: 0; color: #ded5c8; font: 400 13px/1.65 var(--bp-sans); }
.sb-bp4 .bp-genre { margin: 5px 0 0; color: var(--bp-muted); font: 400 11px/1.65 var(--bp-sans); }
.sb-bp4 .bp-case { display: inline-flex; gap: 12px; margin-top: 12px; padding-block: 6px; color: var(--bp-text); font: 500 12px/1.5 var(--bp-sans); text-underline-offset: 4px; }
.sb-bp4 .bp-badge { display: flex; align-items: center; gap: 10px; min-height: 58px; margin-top: 16px; padding: 10px; border: 1px solid var(--bp-line); border-radius: 5px; background: #131311; }
.sb-bp4 .bp-logos { display: flex; flex: 0 0 78px; flex-wrap: wrap; align-items: center; justify-content: center; gap: 5px; min-height: 34px; padding: 6px; border-radius: 2px; background: #fffdf8; }
.sb-bp4 .bp-logo { display: block; width: auto; height: auto; max-width: 66px; max-height: 27px; object-fit: contain; filter: none; mix-blend-mode: normal; }
.sb-bp4 .bp-badge-text { color: #e6d9c5; font: 500 10px/1.5 var(--bp-sans); overflow-wrap: anywhere; }
.sb-bp4 .bp-badge--type .bp-badge-text { font-size: 11px; }
.sb-bp4:is([data-layout="home"], [data-layout="shelf"], [data-layout="showcase"], [data-layout="library"]) .bp-info { padding-bottom: 16px; }
.sb-bp4:is([data-layout="home"], [data-layout="shelf"], [data-layout="showcase"], [data-layout="library"]) .bp-card > .bp-badge { margin-top: auto; }
.sb-bp4 .bp-symbol { flex: 0 0 26px; color: var(--bp-accent); font-size: 20px; text-align: center; }
.sb-bp4 .bp-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 40px 28px; }
.sb-bp4 .bp-rail { --bp-columns: 4; --bp-gap: 28px; display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - (var(--bp-columns) - 1) * var(--bp-gap)) / var(--bp-columns)); gap: var(--bp-gap); overflow-x: auto; overflow-y: hidden; padding: 5px 4px 22px; margin-inline: -4px; scroll-snap-type: x mandatory; scroll-padding-inline: 4px; overscroll-behavior-x: contain; scrollbar-width: thin; scrollbar-color: #72583c transparent; touch-action: pan-x pan-y; }
.sb-bp4 .bp-rail > .bp-card { scroll-snap-align: start; }
.sb-bp4 .bp-rail::-webkit-scrollbar { height: 4px; }
.sb-bp4 .bp-rail::-webkit-scrollbar-thumb { background: #72583c; border-radius: 2px; }

/* Homepage: a quiet continuation of the existing client portfolio. */
.sb-bp4[data-layout="home"] { margin-top: 42px; padding: 36px 0 8px; border-top: 1px solid var(--bp-line); }
.sb-bp4[data-layout="home"] .bp-shell { width: 100%; }
.sb-bp4[data-layout="home"] .bp-head { gap: 24px 48px; margin-bottom: 26px; }
.sb-bp4[data-layout="home"] .bp-heading { font-size: clamp(29px, 3vw, 39px); }
.sb-bp4[data-layout="home"] .bp-copy { font-size: 13px; }
.sb-bp4[data-layout="home"] .bp-art { height: 280px; }
.sb-bp4[data-layout="home"] .bp-footer { justify-content: flex-start; margin-top: 14px; padding-top: 14px; }
.sb-bp4[data-layout="home"] .bp-book-title { font-size: 23px; }

/* Publishing: generous art space and three full, equally legible titles. */
.sb-bp4[data-layout="showcase"] { background: linear-gradient(180deg, transparent, rgba(159, 136, 107, .035), transparent); }
.sb-bp4[data-layout="showcase"] .bp-rail { --bp-columns: 3; --bp-gap: 48px; }
.sb-bp4[data-layout="showcase"] .bp-art { height: 330px; padding-inline: 34px; }
.sb-bp4[data-layout="showcase"] .bp-book-title { font-size: 29px; }

/* Writing and editing: one book and its details, with explicit navigation. */
.sb-bp4[data-layout="editorial"] .bp-body { border-block: 1px solid var(--bp-line); padding-block: 32px; }
.sb-bp4 .bp-feature { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); align-items: center; gap: 60px; min-height: 400px; }
.sb-bp4 .bp-feature .bp-art { height: 390px; padding: 0 40px; border: 0; margin: 0; }
.sb-bp4 .bp-feature .bp-info { max-width: 520px; padding-block: 16px; }
.sb-bp4 .bp-feature .bp-book-title { font-size: clamp(32px, 4vw, 58px); line-height: 1.08; margin-bottom: 16px; }
.sb-bp4 .bp-feature .bp-author { font-size: 16px; }
.sb-bp4 .bp-feature .bp-service { font-size: 11px; margin-bottom: 18px; }
.sb-bp4 .bp-feature .bp-genre { font-size: 13px; margin-top: 12px; }
.sb-bp4 .bp-feature .bp-badge { max-width: 360px; margin-top: 24px; padding: 12px; }
.sb-bp4 .bp-feature .bp-badge-text { font-size: 12px; }
.sb-bp4 .bp-feature .bp-logos { flex-basis: 94px; }
.sb-bp4 .bp-feature .bp-logo { max-width: 80px; max-height: 34px; }
.sb-bp4[data-layout="editorial"][data-family="editing"] .bp-feature .bp-art { order: 2; }
.sb-bp4[data-layout="editorial"][data-family="editing"] .bp-feature { grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); }
.sb-bp4[data-layout="editorial"] .bp-footer { border: 0; padding-top: 0; margin-top: 22px; }

/* Secondary proof: smaller covers beside the metadata, not another hero. */
.sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-shell { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.7fr); gap: 0 44px; border-block: 1px solid var(--bp-line); padding-block: 32px; }
.sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-head { display: block; margin-bottom: 0; }
.sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-heading { font-size: clamp(28px, 2.8vw, 38px); }
.sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-copy { margin-top: 18px; font-size: 13px; }
.sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-card { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 0 18px; align-content: start; }
.sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-art { height: 145px; padding: 0 0 12px; margin: 0; border: 0; }
.sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-book-title { font-size: 23px; }
.sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-author { font-size: 12px; }
.sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-badge { grid-column: 1/-1; margin-top: 16px; }
.sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-footer { grid-column: 2; border-top: 0; margin-top: 14px; padding-top: 0; }
.sb-bp4[data-layout="article"] .bp-shell { width: min(1120px, 92vw); }
.sb-bp4[data-layout="article"] { padding-top: 16px; }

/* Author platforms: covers and their authors sit together in a short selection. */
.sb-bp4[data-layout="author"] .bp-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; }
.sb-bp4[data-layout="author"] .bp-card { border-top: 1px solid var(--bp-line); padding-top: 22px; }
.sb-bp4[data-layout="author"] .bp-art { height: 250px; border: 0; padding-inline: 32px; margin-bottom: 16px; }
.sb-bp4[data-layout="author"] .bp-info { padding-inline: 8px; }

/* The portfolio page holds the complete library, with progressive filtering. */
.sb-bp4[data-layout="library"] { border-block: 1px solid var(--bp-line); margin-block: 24px; }
.sb-bp4 .bp-filters { display: grid; grid-template-columns: minmax(0, 1fr) minmax(180px, 280px) auto; align-items: end; gap: 16px; margin: 0 0 32px; padding-bottom: 24px; border-bottom: 1px solid var(--bp-line); }
.sb-bp4 .bp-filter-label { display: block; font: 500 12px/1.5 var(--bp-sans); color: var(--bp-muted); }
.sb-bp4 .bp-input { display: block; width: 100%; min-width: 0; height: 48px; margin-top: 8px; padding: 10px 14px; color: var(--bp-text); background: #11100d; border: 1px solid var(--bp-line); border-radius: 4px; font-size: 14px; line-height: 1.5; color-scheme: dark; }
.sb-bp4 .bp-input::placeholder { color: #a2988a; opacity: 1; }
.sb-bp4 .bp-reset, .sb-bp4 .bp-more { min-height: 48px; padding: 12px 20px; border: 1px solid var(--bp-line); border-radius: 4px; color: var(--bp-text); background: transparent; cursor: pointer; font-size: 13px; }
.sb-bp4 .bp-reset:hover, .sb-bp4 .bp-more:hover { border-color: var(--bp-accent); background: rgba(159, 136, 107, .07); }
.sb-bp4 .bp-empty { margin: 12px 0; padding: 30px; color: var(--bp-muted); border: 1px solid var(--bp-line); }
.sb-bp4 .bp-library-actions { display: flex; justify-content: center; margin-top: 32px; }

@media (min-width: 1600px) {
  .sb-bp4 .bp-shell { width: min(1320px, 92vw); }
  .sb-bp4[data-layout="home"] .bp-shell { width: 100%; }
}
@media (max-width: 1050px) {
  .sb-bp4 .bp-head { gap: 24px 32px; }
  .sb-bp4 .bp-rail { --bp-columns: 3; --bp-gap: 24px; }
  .sb-bp4 .bp-art { height: 250px; padding-inline: 12px; }
  .sb-bp4 .bp-feature { gap: 32px; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-shell { grid-template-columns: minmax(0, .75fr) minmax(0, 1.25fr); gap: 0 30px; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-card { display: block; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-art { height: 180px; padding-bottom: 18px; }
  .sb-bp4 .bp-grid { gap: 32px 22px; }
  .sb-bp4[data-layout="home"] .bp-grid, .sb-bp4[data-layout="library"] .bp-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .sb-bp4 { padding-block: 42px; }
  .sb-bp4 .bp-head { grid-template-columns: 1fr; gap: 18px; margin-bottom: 26px; }
  .sb-bp4 .bp-heading { max-width: 560px; font-size: 36px; }
  .sb-bp4 .bp-copy { max-width: 600px; }
  .sb-bp4 .bp-rail, .sb-bp4[data-layout="showcase"] .bp-rail { --bp-columns: 2; --bp-gap: 24px; }
  .sb-bp4 .bp-feature, .sb-bp4[data-layout="editorial"][data-family="editing"] .bp-feature { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); min-height: 320px; gap: 24px; }
  .sb-bp4 .bp-feature .bp-art { height: 280px; padding: 0; }
  .sb-bp4 .bp-feature .bp-book-title { font-size: 35px; }
  .sb-bp4 .bp-feature .bp-badge { margin-top: 16px; }
  .sb-bp4[data-layout="editorial"][data-family="editing"] .bp-feature .bp-art { order: 0; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-shell { display: block; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-head { margin-bottom: 26px; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-copy { margin-top: 14px; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-card { display: grid; grid-template-columns: 85px minmax(0, 1fr); gap: 0 16px; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-art { height: 135px; }
  .sb-bp4 .bp-filters { grid-template-columns: minmax(0, 1fr) auto; }
  .sb-bp4 .bp-filter-label:first-child { grid-column: 1/-1; }
  .sb-bp4[data-layout="author"] .bp-grid { gap: 22px; }
  .sb-bp4[data-layout="author"] .bp-art { height: 200px; padding-inline: 10px; }
}
@media (max-width: 540px) {
  .sb-bp4 .bp-shell { width: calc(100% - 36px); }
  .sb-bp4 .bp-input { font-size: 16px; }
  .sb-bp4 .bp-heading { font-size: 32px; }
  .sb-bp4 .bp-copy { font-size: 13px; line-height: 1.75; }
  .sb-bp4 .bp-rail, .sb-bp4[data-layout="showcase"] .bp-rail { grid-auto-columns: 78%; gap: 22px; }
  .sb-bp4 .bp-art, .sb-bp4[data-layout="showcase"] .bp-art { height: 290px; padding-inline: 20px; }
  .sb-bp4 .bp-book-title { font-size: 25px; }
  .sb-bp4 .bp-feature, .sb-bp4[data-layout="editorial"][data-family="editing"] .bp-feature { grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr); align-items: start; min-height: 270px; gap: 18px; }
  .sb-bp4 .bp-feature .bp-art { height: 220px; padding: 0; }
  .sb-bp4 .bp-feature .bp-info { padding: 0; }
  .sb-bp4 .bp-feature .bp-book-title { font-size: 29px; }
  .sb-bp4 .bp-feature .bp-author { font-size: 13px; }
  .sb-bp4 .bp-feature .bp-service { font-size: 9px; margin-bottom: 12px; }
  .sb-bp4 .bp-feature .bp-genre { font-size: 11px; margin-top: 9px; }
  .sb-bp4 .bp-feature .bp-badge { flex-wrap: wrap; gap: 8px; padding: 10px; }
  .sb-bp4 .bp-feature .bp-badge-text { font-size: 11px; }
  .sb-bp4 .bp-feature .bp-logos { flex: 0 1 auto; min-width: 70px; }
  .sb-bp4 .bp-feature .bp-logo { max-width: 68px; max-height: 26px; }
  .sb-bp4 .bp-footer { gap: 12px 20px; margin-top: 18px; padding-top: 18px; }
  .sb-bp4 .bp-footer .bp-controls { margin-left: auto; }
  .sb-bp4[data-layout="home"] .bp-shell { width: 100%; }
  .sb-bp4[data-layout="home"] .bp-grid { gap: 28px 18px; }
  .sb-bp4[data-layout="home"] .bp-art { height: 200px; padding: 8px 0 18px; }
  .sb-bp4[data-layout="home"] .bp-book-title { font-size: 23px; }
  .sb-bp4[data-layout="home"] .bp-badge { flex-wrap: wrap; gap: 8px; }
  .sb-bp4[data-layout="home"] .bp-service { font-size: 9px; }
  .sb-bp4[data-layout="home"] .bp-author { font-size: 12px; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-shell { width: calc(100% - 36px); }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-grid { grid-template-columns: 1fr; gap: 28px; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-card { grid-template-columns: 105px minmax(0, 1fr); column-gap: 20px; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-art { height: 155px; }
  .sb-bp4:is([data-layout="reference"], [data-layout="article"]) .bp-badge { margin-top: 12px; }
  .sb-bp4[data-layout="author"] .bp-grid { grid-template-columns: 1fr; gap: 28px; }
  .sb-bp4[data-layout="author"] .bp-card { display: grid; grid-template-columns: 105px minmax(0, 1fr); gap: 0 20px; }
  .sb-bp4[data-layout="author"] .bp-art { height: 165px; padding: 0; margin: 0; }
  .sb-bp4[data-layout="author"] .bp-info { padding: 0; }
  .sb-bp4[data-layout="author"] .bp-badge { grid-column: 1/-1; }
  .sb-bp4[data-layout="library"] .bp-grid { grid-template-columns: 1fr; gap: 36px; }
  .sb-bp4[data-layout="library"] .bp-card { max-width: 360px; width: 100%; margin-inline: auto; }
  .sb-bp4[data-layout="library"] .bp-art { height: 300px; padding-inline: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  .sb-bp4 *, .sb-bp4 *::before, .sb-bp4 *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}