/* Hallmark · macrostructure: Catalogue · F1 knobs: grid=3 columns, cover=quiet specimen, reveal=none · theme: tuned violet · N1a / Ft2 */
@import url("./tokens.css");

*{box-sizing:border-box}
html,body{min-width:320px;overflow-x:clip}
html{background:var(--color-canvas);scroll-behavior:smooth}
body{margin:0;background:var(--color-canvas);color:var(--color-ink);font-family:var(--font-body);font-size:15px;-webkit-font-smoothing:antialiased}
button,input{font:inherit}
a{color:inherit}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--color-focus);outline-offset:3px}
.skip-link{position:absolute;z-index:10;top:var(--space-2xs);left:var(--space-2xs);padding:var(--space-2xs) var(--space-xs);transform:translateY(-160%);border-radius:var(--radius-sm);background:var(--color-paper);color:var(--color-ink)}
.skip-link:focus{transform:translateY(0)}
.site-header{display:flex;min-height:76px;align-items:center;justify-content:space-between;gap:var(--space-md);padding:0 clamp(20px,6vw,88px);border-bottom:1px solid var(--color-line);background:var(--color-paper)}
.wordmark{display:inline-flex;min-width:0;align-items:center;gap:11px;color:var(--color-ink);font-size:15px;font-weight:650;letter-spacing:.01em;text-decoration:none;white-space:nowrap}
.wordmark-symbol{display:grid;width:29px;height:29px;align-content:center;gap:3px;padding:6px;border:1px solid var(--color-line-strong);border-radius:9px;background:var(--color-paper)}
.wordmark-symbol i{display:block;height:2px;border-radius:var(--radius-pill);background:var(--color-accent)}
.wordmark-symbol i:nth-child(2){width:72%;opacity:.68}.wordmark-symbol i:nth-child(3){width:48%;opacity:.42}
.site-nav{display:flex;align-items:center;gap:var(--space-lg)}
.nav-link{display:inline-flex;min-height:44px;align-items:center;color:var(--color-muted);font-size:13px;text-decoration:none;white-space:nowrap}
.nav-link:hover,.nav-link.is-current{color:var(--color-accent)}
.header-note{color:var(--color-muted);font-size:10px;font-weight:600;letter-spacing:.16em;white-space:nowrap}
main{width:min(1120px,calc(100% - 48px));min-width:0;margin:0 auto}
.catalog-view{padding-top:var(--space-4xl)}
.catalog-intro{padding-bottom:var(--space-lg);border-bottom:1px solid var(--color-line-strong)}
.eyebrow{display:flex;align-items:center;gap:9px;margin:0;color:var(--color-muted);font-size:10px;font-weight:650;letter-spacing:.16em}
.eyebrow>span{width:6px;height:6px;border-radius:50%;background:var(--color-accent)}
.intro-row{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--space-lg);margin-top:var(--space-sm)}
.intro-row h1{max-width:65ch;min-width:0;margin:0;overflow-wrap:anywhere;font-family:var(--font-display);font-size:clamp(34px,5vw,51px);font-weight:400;letter-spacing:-.025em;line-height:1.08}
.intro-copy{margin:var(--space-xs) 0 0;color:var(--color-body);font-size:14px;line-height:1.75}
.catalog-count{margin:0 0 3px;color:var(--color-muted);font-size:12px;white-space:nowrap}
.catalog-controls{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);padding:var(--space-lg) 0 var(--space-md)}
.search-field{display:flex;width:min(340px,100%);min-height:44px;align-items:center;gap:10px;padding:0 12px;border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-paper);color:var(--color-muted)}
.search-field:focus-within{border-color:var(--color-focus)}
.search-field svg{width:17px;height:17px;flex:none;fill:none;stroke:currentColor;stroke-linecap:round;stroke-width:1.7}
.search-field input{width:100%;min-width:0;border:0;outline:0;background:transparent;color:var(--color-ink);font-size:12px}
.search-field input::placeholder{color:var(--color-muted)}
.search-field kbd{display:grid;width:20px;height:22px;flex:none;place-items:center;border:1px solid var(--color-line);border-radius:5px;color:var(--color-muted);font-family:var(--font-body);font-size:11px}
.category-filters{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:7px}
.filter-chip{display:inline-flex;min-height:36px;align-items:center;justify-content:center;padding:0 13px;border:1px solid transparent;border-radius:var(--radius-pill);background:transparent;color:var(--color-body);font-size:11px;white-space:nowrap;cursor:pointer}
.filter-chip:hover{border-color:var(--color-line);background:var(--color-paper)}
.filter-chip[aria-pressed="true"]{border-color:var(--color-accent-soft);background:var(--color-accent-soft);color:var(--color-accent-strong);font-weight:600}
.course-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--space-md);padding:var(--space-xs) 0 var(--space-3xl)}
.course-card{display:flex;min-width:0;flex-direction:column;border:1px solid var(--color-line);border-radius:var(--radius-md);background:var(--color-paper);color:inherit;text-align:left;text-decoration:none;cursor:pointer}
.course-card:hover{border-color:var(--color-line-strong);box-shadow:0 10px 28px var(--color-shadow)}
.course-cover{position:relative;display:grid;aspect-ratio:16/9;place-items:center;overflow:hidden;border-radius:calc(var(--radius-md) - 1px) calc(var(--radius-md) - 1px) 0 0;background:var(--color-surface)}
.course-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cover-composition{position:absolute;inset:0;overflow:hidden;background:var(--cover-paper,var(--color-surface))}
.cover-composition::before,.cover-composition::after{position:absolute;display:block;border:1px solid var(--color-accent);border-radius:50%;content:"";opacity:.15}
.cover-composition::before{right:-47px;top:-92px;width:245px;height:245px}
.cover-composition::after{right:6px;top:-54px;width:174px;height:174px}
.cover-composition .cover-index{position:absolute;right:22px;bottom:12px;color:var(--cover-ink,var(--color-accent));font-family:var(--font-display);font-size:66px;font-weight:400;line-height:1;opacity:.38}
.cover-composition .cover-kicker{position:absolute;top:22px;left:24px;color:var(--color-muted);font-size:9px;font-weight:650;letter-spacing:.16em}
.cover-composition .cover-title{position:absolute;left:24px;bottom:26px;z-index:1;max-width:72%;margin:0;color:var(--color-ink);font-size:17px;font-weight:600;line-height:1.45;overflow-wrap:anywhere}
.cover-composition .cover-rule{position:absolute;left:24px;top:56px;width:30px;height:2px;border-radius:var(--radius-pill);background:var(--color-accent);opacity:.6}
.cover-tone-1{--cover-paper:var(--color-cover-rose);--cover-ink:var(--color-accent-strong)}
.cover-tone-2{--cover-paper:var(--color-cover-blue);--cover-ink:var(--color-accent)}
.cover-tone-3{--cover-paper:var(--color-cover-amber);--cover-ink:var(--color-accent-strong)}
.course-card-copy{display:flex;min-height:126px;flex:1;flex-direction:column;padding:14px 16px 13px}
.course-card-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--color-muted);font-size:10px}
.course-card-meta .category-label{color:var(--color-accent-strong);font-weight:600}
.course-card h2{margin:11px 0 0;color:var(--color-ink);font-size:15px;font-weight:600;line-height:1.45;overflow-wrap:anywhere}
.course-card-open{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:11px;border-top:1px solid var(--color-line);color:var(--color-accent-strong);font-size:11px;font-weight:600}
.course-card-open span:last-child{font-size:16px;font-weight:400}
.empty-state{display:flex;min-height:300px;flex-direction:column;align-items:center;justify-content:center;margin:var(--space-xs) 0 var(--space-3xl);padding:var(--space-lg);border-top:1px solid var(--color-line);border-bottom:1px solid var(--color-line);text-align:center}
.empty-mark{position:relative;display:flex;width:54px;height:54px;align-items:center;justify-content:center;gap:5px;margin-bottom:var(--space-md);border:1px solid var(--color-line-strong);border-radius:50%;background:var(--color-paper)}
.empty-mark span{width:5px;height:17px;border-radius:var(--radius-pill);background:var(--color-accent);opacity:.55}
.empty-mark span:nth-child(2){height:27px;opacity:.8}.empty-mark span:nth-child(3){height:11px;opacity:.38}
.empty-state .eyebrow{justify-content:center}
.empty-state h2{margin:13px 0 7px;font-size:19px;font-weight:600;letter-spacing:-.02em}
.empty-state>p:last-child{max-width:52ch;margin:0;color:var(--color-body);font-size:12px;line-height:1.8}
.no-results{padding:var(--space-3xl) var(--space-md);color:var(--color-muted);font-size:13px;text-align:center}
.browse-note{display:grid;grid-template-columns:50px minmax(0,1fr) 30px;align-items:center;gap:var(--space-md);padding:var(--space-lg) 0;border-top:1px solid var(--color-line-strong)}
.note-index{align-self:start;padding-top:3px;color:var(--color-accent);font-family:var(--font-display);font-size:23px}
.browse-note h2{margin:0;font-size:15px;font-weight:600}
.browse-note p{margin:6px 0 0;color:var(--color-body);font-size:12px;line-height:1.7}
.note-arrow{justify-self:end;color:var(--color-muted);font-size:18px}
.detail-view{padding:var(--space-lg) 0 var(--space-3xl)}
.detail-view[hidden],.catalog-view[hidden]{display:none}
.breadcrumb{display:flex;min-height:40px;align-items:center;gap:10px;color:var(--color-muted);font-size:12px}
.breadcrumb a{color:var(--color-accent-strong);text-decoration:none;white-space:nowrap}
.breadcrumb a:hover{text-decoration:underline;text-underline-offset:3px}
.breadcrumb span:last-child{max-width:65ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.detail-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--space-lg);margin:var(--space-lg) 0 var(--space-xl);padding:var(--space-lg) 0;border-bottom:1px solid var(--color-line-strong)}
.detail-heading h1{max-width:65ch;min-width:0;margin:9px 0 6px;overflow-wrap:anywhere;font-family:var(--font-display);font-size:clamp(31px,4vw,44px);font-weight:400;line-height:1.15}
.detail-heading p{max-width:65ch;margin:0;color:var(--color-body);font-size:13px;line-height:1.8}
.detail-count{display:flex;flex:none;flex-direction:column;align-items:flex-end;padding-bottom:2px;color:var(--color-muted);font-size:10px}
.detail-count strong{color:var(--color-accent-strong);font-family:var(--font-display);font-size:33px;font-weight:400;line-height:1.1}
.page-list-heading{display:flex;align-items:baseline;justify-content:space-between;gap:var(--space-md);margin-bottom:var(--space-sm)}
.page-list-heading h2{margin:0;font-size:14px;font-weight:600}
.page-list-heading p{margin:0;color:var(--color-muted);font-size:11px}
.page-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--space-sm)}
.page-tile{display:flex;min-width:0;flex-direction:column;padding:0;overflow:hidden;border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-paper);color:var(--color-ink);text-align:left;cursor:zoom-in}
.page-tile:hover{border-color:var(--color-line-strong);box-shadow:0 7px 20px var(--color-shadow)}
.page-image{display:grid;aspect-ratio:16/9;place-items:center;overflow:hidden;background:var(--color-surface)}
.page-image img{width:100%;height:100%;object-fit:contain}
.page-image-placeholder{display:grid;width:52px;height:52px;place-items:center;border:1px solid var(--color-line-strong);border-radius:50%;color:var(--color-accent);font-family:var(--font-display);font-size:22px}
.page-caption{display:flex;min-height:48px;align-items:center;justify-content:space-between;gap:8px;padding:0 11px}
.page-caption strong{min-width:0;overflow:hidden;font-size:11px;font-weight:500;text-overflow:ellipsis;white-space:nowrap}
.page-caption span{flex:none;color:var(--color-muted);font-size:10px;white-space:nowrap}
.detail-empty{display:flex;min-height:240px;flex-direction:column;align-items:center;justify-content:center;border-top:1px solid var(--color-line);text-align:center}
.detail-empty h2{margin:0 0 6px;font-size:17px;font-weight:600}
.detail-empty p{max-width:50ch;margin:0;color:var(--color-body);font-size:12px;line-height:1.8}
.detail-empty a{display:inline-flex;min-height:44px;align-items:center;margin-top:var(--space-sm);color:var(--color-accent-strong);font-size:12px;text-decoration:none;white-space:nowrap}
.site-footer{display:flex;min-height:70px;align-items:center;justify-content:space-between;gap:var(--space-md);padding:0 clamp(20px,6vw,88px);border-top:1px solid var(--color-line);background:var(--color-paper);color:var(--color-muted);font-size:10px}
.footer-mark{color:var(--color-ink);font-size:12px;font-weight:600;text-decoration:none;white-space:nowrap}
.image-viewer{position:fixed;width:min(94vw,1100px);max-width:94vw;height:min(92vh,860px);max-height:92vh;padding:48px 64px 48px;border:1px solid var(--color-paper-translucent);border-radius:var(--radius-md);background:var(--color-overlay);color:var(--color-paper)}
.image-viewer::backdrop{background:oklch(18% 0.025 292 / .78);backdrop-filter:blur(4px)}
.image-viewer figure{display:grid;width:100%;height:100%;margin:0;grid-template-rows:minmax(0,1fr) auto;justify-items:center;gap:var(--space-xs)}
.image-viewer figure img{display:block;max-width:100%;max-height:100%;object-fit:contain}
.image-viewer figcaption{color:var(--color-paper);font-size:11px;text-align:center}
.viewer-close,.viewer-step{position:absolute;display:grid;place-items:center;border:1px solid var(--color-paper-translucent);border-radius:var(--radius-pill);background:var(--color-paper-translucent-soft);color:var(--color-paper);cursor:pointer}
.viewer-close{top:12px;right:13px;width:40px;height:40px;font-size:23px;line-height:1}
.viewer-step{top:50%;width:44px;height:44px;transform:translateY(-50%);font-size:17px}
.viewer-previous{left:12px}.viewer-next{right:12px}
.viewer-step:disabled{opacity:.34;cursor:default}
.viewer-help{position:absolute;right:0;bottom:13px;left:0;margin:0;color:var(--color-paper);font-size:10px;text-align:center;opacity:.68}
@media(hover:hover) and (pointer:fine){.course-card,.page-tile{transition:border-color var(--dur-normal) var(--ease-out),box-shadow var(--dur-normal) var(--ease-out)}.nav-link,.filter-chip,.viewer-close,.viewer-step{transition:color var(--dur-fast) ease,border-color var(--dur-fast) ease,background-color var(--dur-fast) ease}}
@media(max-width:1100px){.course-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:900px){main{width:min(100% - 40px,760px)}.catalog-view{padding-top:var(--space-3xl)}.catalog-controls{align-items:flex-start;flex-direction:column}.category-filters{justify-content:flex-start}.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.page-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:620px){.site-header{min-height:64px;padding-inline:14px;gap:10px}.wordmark{gap:8px;font-size:13px}.wordmark-symbol{width:26px;height:26px}.site-nav{gap:10px}.nav-link{min-height:44px;font-size:11px}.header-note{display:none}main{width:calc(100% - 32px)}.catalog-view{padding-top:var(--space-2xl)}.catalog-intro{padding-bottom:var(--space-md)}.intro-row{align-items:flex-start;flex-direction:column;gap:8px}.intro-row h1{font-size:38px}.intro-copy{margin-top:8px;font-size:12px}.catalog-count{margin:0}.catalog-controls{gap:12px;padding:var(--space-md) 0 var(--space-xs)}.search-field{width:100%}.category-filters{flex-wrap:nowrap;max-width:100%;overflow-x:auto;justify-content:flex-start;padding:2px 1px 5px;scrollbar-width:thin}.filter-chip{min-height:38px;padding-inline:12px}.course-grid{grid-template-columns:minmax(0,1fr);gap:12px;padding-bottom:var(--space-2xl)}.course-cover{min-height:unset}.course-card-copy{min-height:124px;padding:14px}.course-card h2{margin-top:9px;font-size:15px}.browse-note{grid-template-columns:33px minmax(0,1fr) 20px;gap:10px;padding:var(--space-md) 0}.browse-note h2{font-size:13px}.browse-note p{font-size:11px}.site-footer{min-height:64px;padding-inline:15px;font-size:9px}.footer-mark{font-size:11px}.detail-view{padding-top:12px}.detail-heading{align-items:flex-start;margin:var(--space-sm) 0 var(--space-lg);padding-bottom:var(--space-md)}.detail-heading h1{font-size:34px}.detail-heading p{font-size:12px}.detail-count strong{font-size:27px}.page-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.page-caption{align-items:flex-start;flex-direction:column;justify-content:center;gap:3px;padding:8px 9px}.page-caption strong{max-width:100%}.image-viewer{width:100vw;max-width:100vw;height:96vh;max-height:96vh;padding:50px 44px 55px;border-radius:0}.viewer-step{width:36px;height:36px}.viewer-previous{left:4px}.viewer-next{right:4px}.viewer-close{top:8px;right:8px}}
@media(max-width:360px){.site-header{padding-inline:10px}.site-nav{gap:5px}.nav-link{font-size:10px}.wordmark{font-size:12px}.wordmark-symbol{width:24px;height:24px}.site-footer{gap:8px;padding-inline:10px;font-size:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}

/* Decorative touches: quiet violet accents frame the courseware itself. */
.site-header{position:relative}
.site-header::after{position:absolute;right:clamp(20px,6vw,88px);bottom:-1px;width:64px;height:2px;background:linear-gradient(90deg,var(--color-accent),oklch(75% .10 320 / .5));content:""}
.nav-note{color:var(--color-muted);font-size:9px;font-weight:600;letter-spacing:.18em;white-space:nowrap}
.catalog-intro{position:relative}
.catalog-intro::after{position:absolute;right:0;bottom:-1px;width:118px;height:1px;background:linear-gradient(90deg,transparent,var(--color-accent));content:"";opacity:.38}
.course-card{position:relative;overflow:hidden}
.course-card::after{position:absolute;top:0;right:16px;width:1px;height:0;background:var(--color-accent);content:"";opacity:.45;transition:height var(--dur-normal) var(--ease-out)}
.course-card:hover::after{height:40px}
.course-cover img{transition:transform 420ms var(--ease-out)}
.course-card:hover .course-cover img{transform:scale(1.025)}
@media(max-width:620px){.nav-note{font-size:8px;letter-spacing:.12em}.site-header::after{right:14px}}