/* The workspace system: one set of tokens, type, panels, buttons, fields and
   layout tiers for every page behind sign-in (learner, parent, teacher) and
   the sign-in doors. Loaded after chrome.css; page stylesheets (journey.css,
   auth.css, vocab.css …) add only what is specific to their page.
   Three sizes: phone < 640, tablet 640–1023, desktop ≥ 1024. */
:root{--paper:#f8f8fa;--surface:#fff;--ink:#0b1538;--muted:#596173;--line:#dce0e7;--blue:#084bff;--blue-dark:#003bd4;--support:#edf2ff;--green:#12664f;--green-bg:#e9f5ee;--amber:#8a5a00;--amber-bg:#fff3d6;--red:#a3261b;--red-bg:#fbe8e5;
  --body:Figtree,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans Thai",sans-serif;--display:"Bricolage Grotesque",Figtree,"PingFang SC","Microsoft YaHei",sans-serif;--mono:ui-monospace,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --gutter:48px;--content:1180px;--radius:16px;--radius-s:12px;--pad:24px;
  --t-h1:32px;--t-h2:22px;--t-h3:17px;--t-body:16px;--t-small:14px;--t-eyebrow:12px;--t-stat:32px}
@media(max-width:1023px){:root{--gutter:24px;--pad:20px;--t-h1:28px;--t-h2:21px}}
@media(max-width:639px){:root{--gutter:16px;--pad:16px;--t-h1:26px;--t-h2:20px;--t-h3:16px;--t-body:15px;--t-small:13px;--t-stat:28px}}

/* ---------- base ---------- */
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:var(--t-body);line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}
a{color:inherit;text-decoration:none}
img,svg,video{max-width:100%}img{display:block}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
h1,h2{font-family:var(--display);font-weight:700;line-height:1.2;letter-spacing:-.02em;text-wrap:balance}
h1{font-size:var(--t-h1)}h2{font-size:var(--t-h2)}
h3{font-size:var(--t-h3);font-weight:600;line-height:1.35}h4{font-size:var(--t-small);font-weight:600}
p{max-width:70ch}
.muted{color:var(--muted)}.small{font-size:var(--t-small)}.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.eyebrow{display:block;font-size:var(--t-eyebrow);font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
::selection{background:#cbd8ff;color:var(--ink)}
[hidden]{display:none!important}
button,summary,a{touch-action:manipulation}
.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.skip-link{position:fixed;top:-80px;left:20px;z-index:100;background:var(--surface);padding:12px}.skip-link:focus{top:12px}
.reveal{animation:reveal .32s cubic-bezier(.16,1,.3,1)}@keyframes reveal{from{transform:translateY(5px)}to{transform:translateY(0)}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* ---------- page frame ---------- */
.workspace{padding:0 var(--gutter) 64px}
.page{width:100%;max-width:var(--content);margin:28px auto 0}
.page-head,.page-intro{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:28px}
.page-head>div:first-child,.page-intro>div:first-child{min-width:0}
.page-head p,.page-intro p{margin-top:8px;color:var(--muted)}
.page-head .eyebrow{margin-bottom:6px}
.guest-note{max-width:var(--content);margin:18px auto 0;font-size:13px;color:var(--muted)}.guest-note a{color:var(--blue);font-weight:600}
.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:28px 0 14px}
.section-title h2{font-size:var(--t-h2)}.section-title p{font-size:var(--t-small);color:var(--muted)}
.tertiary-links{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:24px;font-size:var(--t-small)}
.tertiary-links a,.tertiary-links button{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:0;border:0;background:none;color:var(--muted);font-size:inherit}
.tertiary-links a:hover,.tertiary-links button:hover{color:var(--blue)}

/* grids: the pairs that split on a tablet and stack on a phone */
.grid-main-aside{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}
.stats,.student-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:24px}
.stat,.student-metrics article{display:grid;gap:6px;padding:18px 20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.stat span,.student-metrics span{font-size:var(--t-small);color:var(--muted)}
.stat strong,.student-metrics strong{font-family:var(--display);font-size:var(--t-stat);line-height:1.1;font-weight:700;font-variant-numeric:tabular-nums}
@media(max-width:1023px){.grid-main-aside{grid-template-columns:1fr}.grid-2{gap:16px}.stats,.student-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:639px){.grid-2{grid-template-columns:1fr}.page{margin-top:16px}.page-head,.page-intro{flex-direction:column;align-items:stretch;gap:12px;margin-bottom:20px}.page-head p,.page-intro p{font-size:var(--t-small)}.section-title{margin-top:22px}.stat,.student-metrics article{padding:14px 16px}}

/* ---------- panels ---------- */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:var(--pad);min-width:0}
.panel.tint{background:var(--support);border-color:transparent}
.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:12px}
.panel-heading h2,.panel-heading h3{font-size:var(--t-h2)}
.panel>p+p,.panel-body>p+p{margin-top:8px}
.divider{border:0;border-top:1px solid var(--line);margin:16px 0}
.empty-state{display:grid;justify-items:center;gap:8px;padding:40px 24px;text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.empty-state img{height:96px;margin-bottom:8px}.empty-state h1,.empty-state h2{font-size:var(--t-h2)}
.empty-state p{color:var(--muted);max-width:44ch}.empty-state .button,.empty-state .text-button{margin-top:8px}

/* ---------- pills ---------- */
.pill{display:inline-flex;align-items:center;gap:6px;border-radius:50px;padding:4px 11px;font-size:12px;font-weight:600;background:var(--support);color:var(--blue);white-space:nowrap;line-height:1.5}
.pill.green{background:var(--green-bg);color:var(--green)}.pill.gray{background:#eef0f4;color:var(--muted)}.pill.amber{background:var(--amber-bg);color:var(--amber)}.pill.red{background:var(--red-bg);color:var(--red)}
.pill-row{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- buttons ---------- */
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 22px;border:1px solid var(--blue);border-radius:var(--radius-s);background:var(--blue);color:#fff;font-size:15px;font-weight:600;line-height:1.3;transition:background .18s,transform .18s;text-align:center}
.button:hover{background:var(--blue-dark);border-color:var(--blue-dark)}.button:active{transform:translateY(1px)}
.button.secondary{background:var(--surface);color:var(--ink);border-color:var(--line)}.button.secondary:hover{background:var(--support);border-color:var(--line)}
.button.quiet{background:var(--support);color:var(--blue);border-color:transparent}.button.quiet:hover{background:#dfe7ff}
.button.danger{background:var(--surface);color:var(--red);border-color:var(--line)}
.button.small{min-height:40px;padding:8px 14px;font-size:14px}
.button.block{width:100%}
.text-button{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:8px 0;border:0;background:none;color:var(--blue);font-size:var(--t-small);font-weight:600}
.text-button:hover{text-decoration:underline;text-underline-offset:5px}
.icon-button{display:grid;place-items:center;min-width:44px;min-height:44px;padding:0;border:0;border-radius:10px;background:var(--support);color:var(--blue)}
.actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
@media(max-width:639px){.actions{flex-direction:column;align-items:stretch}.actions .button{width:100%}}

/* ---------- fields ---------- */
.field{display:grid;gap:6px;margin-bottom:16px}
.field label,.label{font-size:var(--t-small);font-weight:600}
.field-help{font-size:13px;color:var(--muted)}
.input,.field input:not([type=checkbox]):not([type=radio]),.field select,.field textarea,textarea.input{width:100%;min-height:48px;padding:11px 14px;border:1px solid #aeb7c9;border-radius:var(--radius-s);background:var(--surface);color:var(--ink);font-size:16px;line-height:1.4;caret-color:var(--blue)}
.field select{appearance:none;-webkit-appearance:none;padding-right:38px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23596173' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.field textarea,textarea.input{min-height:150px;resize:vertical;line-height:1.7}
.input:focus,.field input:focus,.field select:focus,.field textarea:focus{outline:3px solid var(--blue);outline-offset:1px;border-color:var(--blue)}
.field input[aria-invalid=true],.input[aria-invalid=true]{border-color:var(--red)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:var(--t-small);line-height:1.5}
.check input{width:20px;height:20px;margin:2px 0 0;flex-shrink:0;accent-color:var(--blue)}
.field-row{display:flex;gap:10px;align-items:flex-start}.field-row>.input,.field-row>input{flex:1}
.status{min-height:22px;font-size:var(--t-small);color:var(--muted)}.status.error{color:var(--red)}.status.ok{color:var(--green)}
@media(max-width:639px){.field-row{flex-direction:column}.field-row .button{width:100%}}

/* codes: large enough to read to someone across the room */
.code-display{display:inline-flex;align-items:center;gap:16px;flex-wrap:wrap}
.code-display b{font-family:var(--mono);font-weight:600;font-size:36px;line-height:1.1;letter-spacing:.14em;font-variant-numeric:tabular-nums;color:var(--ink);word-break:break-all}
.code-input,.field input.code-input{font-family:var(--mono);font-size:28px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;text-align:center;min-height:64px;padding:8px 12px;font-variant-numeric:tabular-nums}
.code-input::placeholder{letter-spacing:.14em;color:#b6bdcc;font-weight:400;text-transform:none}
.pin-input,.field input.pin-input{font-family:var(--mono);font-size:24px;letter-spacing:.3em;text-align:center;min-height:56px;font-variant-numeric:tabular-nums}
.code-card{display:grid;gap:10px;padding:var(--pad);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.code-card .code-line{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.code-card .field-help{max-width:52ch}
@media(max-width:639px){.code-display b{font-size:30px;letter-spacing:.12em}.code-input,.field input.code-input{font-size:24px;min-height:58px}}

/* ---------- segmented tabs (sub-navigation) ---------- */
.subnav{display:flex;gap:4px;width:max-content;max-width:100%;overflow-x:auto;scrollbar-width:none;padding:4px;margin-bottom:20px;background:#eef0f4;border-radius:12px}
.subnav::-webkit-scrollbar{display:none}
.subnav a,.subnav button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:8px 16px;border:0;border-radius:9px;background:none;color:var(--muted);font-size:var(--t-small);font-weight:600;white-space:nowrap}
.subnav .active,.subnav [aria-current],.subnav [aria-pressed=true]{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px rgba(11,21,56,.08)}
@media(max-width:639px){.subnav{width:100%}.subnav a,.subnav button{flex:1}}

/* ---------- lists and records ---------- */
.record-list{display:grid;gap:16px}
.record{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:var(--pad)}
.record-meta{font-size:13px;color:var(--muted);margin-top:4px}
.evidence-block{padding:16px 0;border-top:1px solid var(--line)}
.evidence-block:first-of-type{border-top:0;padding-top:0}
.evidence-label,.evidence-block>span:not(.pill):not(.evidence-score){display:block;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.evidence-block>.pill{margin-bottom:8px}
.evidence-block blockquote,.panel blockquote{margin:8px 0 0;padding:14px 16px;border-left:3px solid #c9d4f6;background:var(--paper);border-radius:0 10px 10px 0;font-size:16px;line-height:1.65;overflow-wrap:anywhere}
.feedback,.evidence-note{padding:16px 18px;border-radius:var(--radius-s);background:var(--green-bg);color:var(--green);font-size:var(--t-small);margin-top:16px}
.feedback strong,.evidence-note strong{display:block;margin-bottom:4px}
.feedback p,.evidence-note p{margin:0;color:inherit}
.feedback.retry{background:var(--amber-bg);color:var(--amber)}
.notice-row{display:flex;align-items:center;gap:14px;padding:16px 20px;background:var(--green-bg);border-radius:var(--radius-s);margin-bottom:20px}
.notice-row>div{flex:1;min-width:0}.notice-row p{font-size:13px;color:var(--green)}.notice-row .icon{color:var(--green)}
@media(max-width:639px){.notice-row{flex-wrap:wrap}.notice-row .button{width:100%}}

/* ---------- dialog and toast ---------- */
dialog{border:0;border-radius:var(--radius);padding:28px;width:560px;max-width:calc(100vw - 32px);max-height:90dvh;overflow:auto;color:var(--ink);background:var(--surface);box-shadow:0 24px 80px rgba(15,23,42,.18)}
dialog::backdrop{background:rgba(11,21,56,.42)}
.dialog-top{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:16px}
.dialog-top h2{font-size:var(--t-h2)}.dialog-top .icon-button{background:var(--paper)}
.dialog-actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.dialog-note{font-size:13px;color:var(--muted);margin-top:14px}
.toast{position:fixed;bottom:30px;left:50%;transform:translate(-50%,20px);max-width:calc(100vw - 32px);background:var(--ink);color:#fff;padding:12px 20px;border-radius:var(--radius-s);z-index:100;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;font-size:var(--t-small)}
.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:639px){dialog{padding:20px}.toast{bottom:92px}}

/* ---------- long-script room ---------- */
html[lang="th"] body{line-height:1.75}
html[lang="ru"] .button,html[lang="es"] .button,html[lang="vi"] .button{white-space:normal}