/* school.onapage.net. Values come from /public/tokens.css (packages/ui/tokens.css).
   Visual vocabulary copied from onapage-site/css/site.css: Fraunces display, Manrope UI,
   Inter body 17px/1.65, navy ground, gold buttons r4, cards r6 with hairline borders. Dark only. */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--navy);color:var(--ice);font-family:var(--font-body);font-size:var(--fs-body);line-height:var(--lh-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column}
img,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
main{flex:1}
.skip{position:absolute;left:-999px;top:0;background:var(--gold);color:#10151b;padding:.5rem 1rem;z-index:100}
.skip:focus{left:1rem;top:1rem}

.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter);width:100%}
.wrap-wide{max-width:1320px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:var(--nav-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--hairline)}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:.85rem 1.4rem;min-height:var(--nav-h);flex-wrap:wrap;align-content:center;padding-block:.8rem}
.brand{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-family:var(--font-display);font-weight:400;font-size:1.5rem;color:var(--cream);line-height:1;letter-spacing:.005em}
.brand-tag{font-size:.62rem;text-transform:uppercase;letter-spacing:.24em;color:var(--gold);margin-top:4px;font-family:var(--font-ui)}
.site-nav{display:flex;align-items:center;gap:.75rem 1.5rem;flex-wrap:wrap}
.nav-links{display:flex;gap:.55rem 1.4rem;flex-wrap:wrap;align-items:center}
.navlink{color:var(--muted);font-family:var(--font-ui);font-weight:500;font-size:.95rem;white-space:nowrap;padding-block:4px;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}
.navlink:hover,.navlink.is-active{color:var(--ice);border-bottom-color:var(--gold)}
.inline{display:inline}

/* buttons + fields */
.btn-gold,.btn-ghost{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.4rem;border-radius:var(--r-ctl);font-family:var(--font-ui);font-weight:600;font-size:.98rem;cursor:pointer;line-height:1.2;text-align:center}
.btn-gold{background:var(--gold);color:#10151b;border:1px solid var(--gold);transition:background .2s,border-color .2s}
.btn-gold:hover{background:var(--gold-hi);border-color:var(--gold-hi)}
.btn-ghost{background:var(--ghost-bg);color:var(--ice);border:1px solid var(--hairline);transition:border-color .2s,background .2s}
.btn-ghost:hover{border-color:var(--steel);background:rgba(18,58,104,.5)}
.btn-sm{padding:.55rem 1rem;font-size:.9rem}
.is-disabled{opacity:.6;cursor:default;pointer-events:none}
.field{display:block;width:100%;padding:.8rem 1rem;border-radius:var(--r-ctl);border:1px solid var(--hairline);background:var(--field-bg);color:var(--ice);font-size:.95rem;font-family:var(--font-body)}
.field:focus{border-color:var(--electric);outline:none}
.label{display:block;font-family:var(--font-ui);font-weight:600;font-size:.85rem;color:var(--muted);margin:0 0 .35rem}
.form{display:flex;flex-direction:column;gap:1rem;max-width:520px}
.form-2{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* type */
.eyebrow{font-family:var(--font-ui);text-transform:uppercase;letter-spacing:var(--eyebrow-ls);font-size:.78rem;font-weight:600;color:var(--gold);margin:0 0 .75rem}
.h1{font-family:var(--font-display);font-weight:400;letter-spacing:-.005em;line-height:1.06;font-size:var(--fs-h1);color:var(--cream);margin:0 0 1rem}
.h2{font-family:var(--font-display);font-weight:400;font-size:var(--fs-h2);line-height:1.12;color:var(--ice);margin:0 0 1rem}
.h3{font-family:var(--font-ui);font-weight:600;font-size:var(--fs-h3);color:var(--ice);margin:0 0 .5rem}
.lede{font-size:1.18rem;font-weight:300;color:var(--muted);max-width:60ch;line-height:1.6;margin:0 0 1.4rem}
.muted{color:var(--muted);margin:0}
.fine{font-size:.72rem;color:var(--fine);line-height:1.55;margin:.2rem 0 0}
.mono{font-family:var(--font-mono);font-size:.85rem}
.err{color:var(--err)}
.link-arrow{font-family:var(--font-ui);font-weight:600;font-size:.95rem;color:var(--electric);display:inline-flex;align-items:center;gap:6px}
.link-arrow::after{content:"\2192"}
.crumbs{display:flex;gap:.5rem;flex-wrap:wrap;font-family:var(--font-ui);font-size:.85rem;color:var(--slate);padding-block:1.2rem .4rem}
.crumbs a:hover{color:var(--ice)}

/* sections */
.hero{padding-block:clamp(2.5rem,6vw,4.5rem) clamp(2rem,4vw,3rem);border-bottom:1px solid var(--hairline);margin-bottom:2.5rem;background:linear-gradient(160deg,transparent 0%,rgba(18,58,104,.18) 100%)}
.hero-short{padding-block:2.5rem 1.5rem}
.section{padding-block:1rem 3rem}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-bottom:1.2rem}
.cta-row{display:flex;flex-wrap:wrap;gap:1rem;margin-top:1.4rem;align-items:center}
.cta-col{display:flex;flex-direction:column;gap:.7rem;margin-top:1.2rem;align-items:flex-start}
.narrow{max-width:640px;padding-block:3rem 4rem}
.narrow-wide{max-width:860px;padding-block:2rem 4rem}

/* cards */
.card{background:var(--card);border:1px solid var(--hairline);border-radius:var(--r-card);padding:1.85rem;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.card:hover{border-color:var(--steel);box-shadow:var(--card-hover-shadow)}
.card-gold{border-color:var(--gold-ring)}
.card-gold:hover{border-color:var(--gold);box-shadow:0 14px 42px rgba(214,166,74,.18)}
.grid-courses{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.4rem}
.card-course{padding:0;overflow:hidden;display:flex;flex-direction:column}
.card-course:hover{transform:translateY(-4px)}
.card-body{padding:1.25rem 1.4rem 1.5rem;display:flex;flex-direction:column;gap:.5rem}
.card-meta{display:flex;align-items:center;gap:.75rem;font-family:var(--font-ui);font-size:.85rem;margin-bottom:.4rem}
.cover{aspect-ratio:16/9;background:linear-gradient(160deg,var(--midnight) 0%,var(--exec) 130%);border-bottom:1px solid var(--hairline);display:flex;align-items:flex-end;overflow:hidden}
.cover img{width:100%;height:100%;object-fit:cover}
.cover-css .cover-title{font-family:var(--font-display);font-size:1.5rem;color:var(--cream);padding:1.2rem 1.4rem;line-height:1.1;text-shadow:0 0 24px rgba(214,166,74,.25)}
.cover-hero{border:1px solid var(--hairline);border-radius:var(--r-card);aspect-ratio:16/10}
.cover-hero .cover-title{font-size:2rem}
.badge{font-family:var(--font-ui);font-size:.66rem;text-transform:uppercase;letter-spacing:.08em;padding:2px 8px;border-radius:var(--r-ctl);font-weight:700}
.badge-free{background:rgba(63,191,127,.14);color:var(--ok);border:1px solid rgba(63,191,127,.3)}
.badge-member{background:rgba(214,166,74,.14);color:var(--gold);border:1px solid rgba(214,166,74,.3)}
.teaser-list{list-style:none;margin:0;padding:0;border:1px solid var(--hairline);border-radius:var(--r-card);background:var(--card)}
.teaser-list li{padding:.85rem 1.25rem;border-bottom:1px solid var(--hairline);font-family:var(--font-ui)}
.teaser-list li:last-child{border-bottom:0}

/* course page */
.course-head{display:grid;grid-template-columns:minmax(260px,380px) 1fr;gap:2.5rem;align-items:start;padding-block:1rem 2rem}
@media (max-width:760px){.course-head{grid-template-columns:1fr}}
.upgrade-inline{margin-top:1.2rem;padding:1.2rem 1.4rem;border:1px solid var(--gold-ring);border-radius:var(--r-card);background:var(--tag-bg)}
.upgrade-inline p{margin:0 0 .9rem}
.lesson-list{list-style:none;margin:0;padding:0;border:1px solid var(--hairline);border-radius:var(--r-card);background:var(--card);counter-reset:none}
.lesson-item{display:grid;grid-template-columns:2.4rem 1fr auto;align-items:center;gap:1rem;padding:.9rem 1.25rem;border-bottom:1px solid var(--hairline)}
.lesson-item:last-child{border-bottom:0}
.lesson-item.is-locked .lesson-link{color:var(--muted)}
.lesson-num{font-family:var(--font-mono);font-size:.8rem;color:var(--slate);width:2.2rem;display:inline-block}
.lesson-link{font-family:var(--font-ui);font-weight:600}
.lesson-link:hover{color:var(--gold)}
.state{font-family:var(--font-ui);font-size:.66rem;text-transform:uppercase;letter-spacing:.08em;padding:2px 8px;border-radius:var(--r-ctl);font-weight:700;border:1px solid var(--hairline);color:var(--muted);white-space:nowrap}
.state-open{color:var(--blueprint);border-color:rgba(121,174,232,.35)}
.state-preview{color:var(--ok);border-color:rgba(63,191,127,.3);background:rgba(63,191,127,.1)}
.state-locked{color:var(--slate)}
.state-done{color:var(--gold);border-color:rgba(214,166,74,.3);background:rgba(214,166,74,.1)}
.progress{position:relative;height:10px;background:var(--field-bg);border:1px solid var(--hairline);border-radius:var(--r-ctl);margin:1rem 0 1.6rem;overflow:visible}
.progress-bar{height:100%;background:var(--gold);border-radius:var(--r-ctl);transition:width .3s}
.progress-text{position:absolute;top:14px;left:0;font-family:var(--font-ui);font-size:.8rem;color:var(--muted)}

/* lesson player */
.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:3rem;align-items:start;padding-bottom:4rem}
@media (max-width:900px){.lesson-layout{grid-template-columns:1fr}.rail{order:-1}}
.lesson-main{min-width:0}
.rail{position:sticky;top:calc(var(--nav-h) + 1rem);border:1px solid var(--hairline);border-radius:var(--r-card);background:var(--card);padding:1.2rem 1.25rem}
.rail-list{list-style:none;margin:0 0 .5rem;padding:0}
.rail-list li{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.5rem 0;border-bottom:1px solid var(--hairline);font-family:var(--font-ui);font-size:.9rem}
.rail-list li:last-child{border-bottom:0}
.rail-list li a{color:var(--muted);display:flex;align-items:center}
.rail-list li a:hover,.rail-list li.is-current a{color:var(--ice)}
.rail-list li.is-current{border-left:2px solid var(--gold);padding-left:.6rem;margin-left:-.75rem}
.rail-list li.is-locked a{color:var(--slate)}
.rail .progress{margin-top:1.4rem}
.lesson-nav{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--hairline)}
.complete-row{margin-top:2rem}
.upgrade-panel{margin-block:1rem 2rem}
.upgrade-panel .h2{margin-top:.3rem}

/* prose (rendered markdown) */
.prose{max-width:72ch}
.prose h2,.prose h3,.prose h4,.prose h5{font-family:var(--font-ui);font-weight:600;color:var(--ice);line-height:1.2;margin:2rem 0 .6rem}
.prose h2{font-size:1.5rem}.prose h3{font-size:1.25rem}.prose h4{font-size:1.05rem}
.prose p{margin:0 0 1.1rem}
.prose a{color:var(--electric);border-bottom:1px solid rgba(30,139,255,.35)}
.prose a:hover{border-bottom-color:var(--electric)}
.prose ul,.prose ol{padding-left:1.4rem;margin:0 0 1.1rem}
.prose li{margin-bottom:.35rem}
.prose blockquote{margin:1.4rem 0;padding:.8rem 1.2rem;border-left:3px solid var(--gold);background:var(--tag-bg);color:var(--ice);border-radius:0 var(--r-ctl) var(--r-ctl) 0}
.prose code{font-family:var(--font-mono);font-size:.88em;background:var(--field-bg);border:1px solid var(--hairline);border-radius:3px;padding:.1em .4em}
.prose pre{position:relative;background:var(--charcoal);border:1px solid var(--hairline);border-radius:var(--r-card);padding:1rem 1.2rem;overflow-x:auto;margin:1.2rem 0;font-size:.9rem;line-height:1.55}
.prose pre code{background:none;border:0;padding:0;font-size:inherit}
.copy-btn{position:absolute;top:.5rem;right:.5rem;font-family:var(--font-ui);font-size:.7rem;padding:.25rem .55rem;border-radius:var(--r-ctl);border:1px solid var(--hairline);background:var(--ghost-bg);color:var(--muted);cursor:pointer}
.copy-btn:hover{color:var(--ice);border-color:var(--steel)}
.prose figure{margin:1.6rem 0}
.prose figure img{border:1px solid var(--hairline);border-radius:var(--r-card)}
.prose figcaption{font-family:var(--font-ui);font-size:.85rem;color:var(--muted);margin-top:.5rem}
.prose table{border-collapse:collapse;width:100%;margin:1.2rem 0;font-size:.95rem}
.prose th,.prose td{text-align:left;padding:.55rem .8rem;border:1px solid var(--hairline);vertical-align:top}
.prose th{font-family:var(--font-ui);font-weight:600;background:var(--tag-bg)}
.prose hr{border:0;border-top:1px solid var(--hairline);margin:2rem 0}

/* pricing */
.grid-tiers{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.4rem;padding-block:1rem 1.5rem}
.tier-card{display:flex;flex-direction:column}
.price{margin:.2rem 0 .6rem;display:flex;align-items:baseline;gap:.5rem}
.price-num{font-family:var(--font-display);font-size:2.4rem;color:var(--cream);line-height:1}
.price-per{font-family:var(--font-ui);color:var(--muted);font-size:.9rem}
.price-alt{font-family:var(--font-ui);color:var(--muted);font-size:.9rem;margin:-.3rem 0 .8rem}

/* account, admin */
.kv{display:grid;grid-template-columns:minmax(120px,max-content) 1fr;gap:.5rem 1.5rem;margin:1.2rem 0 1.6rem;font-family:var(--font-ui)}
.kv dt{color:var(--muted);font-weight:600;font-size:.9rem}
.kv dd{margin:0}
.progress-list{list-style:none;margin:0;padding:0;display:grid;gap:1rem}
.progress-list .card{padding:1.2rem 1.4rem}
.progress-list .progress{margin-bottom:1.4rem}
.notice{padding:.9rem 1.1rem;border-radius:var(--r-card);border:1px solid var(--hairline);background:var(--card);font-family:var(--font-ui);font-size:.95rem}
.notice-err{border-color:rgba(217,74,74,.4);color:var(--err)}
.notice-warn{border-color:rgba(227,162,58,.4);color:var(--warn)}
.table-wrap{overflow-x:auto;border:1px solid var(--hairline);border-radius:var(--r-card);background:var(--card)}
.table{border-collapse:collapse;width:100%;font-size:.9rem;font-family:var(--font-ui)}
.table th,.table td{text-align:left;padding:.6rem .9rem;border-bottom:1px solid var(--hairline);white-space:nowrap}
.table th{color:var(--muted);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em}
.table tr:last-child td{border-bottom:0}

/* footer */
.site-footer{background:var(--navy);border-top:1px solid var(--hairline);padding-block:2.5rem;margin-top:3rem}
.footer-col{display:flex;flex-direction:column;gap:1.4rem}
.footer-nav{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1.4rem}
.footer-label{font-family:var(--font-ui);font-weight:600;color:var(--ice)}
.footer-meta{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.75rem;font-size:.9rem;color:var(--slate);border-top:1px solid var(--hairline);padding-top:1.4rem}

/* billing (M3): the admin tier override row */
.sr-only{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-inline{display:flex;align-items:center;gap:.4rem}
.field-sm{display:inline-block;width:auto;min-width:8rem;padding:.35rem .6rem;font-size:.85rem}