/* POKER AI v0.6.4 — midnight navy as default; consistent five-screen design */
:root,html[data-theme="navy"]{
 --navy:#142c47;--forest:#235e85;--jade:#347fa8;--mint:#eaf3fb;--wash:#f3f7fa;--ink:#21364a;--muted:#60788c;--line:#dce6ee;
 --surface:#fff;--soft:#edf4f9;--hero1:#eaf3fc;--hero2:#fff;--accent:#78aacb;--focus:#237aa9;--header-ink:#f8fbff;--bubble:#235e85;--shadow:0 4px 18px #142e4b0b;--shadow-deep:0 10px 32px #13284124;
}
html[data-theme="emerald"]{
 --navy:#133329;--forest:#17664f;--jade:#23846b;--mint:#eaf5ee;--wash:#f5f7f3;--ink:#20362d;--muted:#64766d;--line:#dce5de;
 --surface:#fff;--soft:#f0f5f1;--hero1:#eaf5ed;--hero2:#fffefa;--accent:#cbaa6e;--focus:#198565;--header-ink:#f9fdfb;--bubble:#17664f;--shadow:0 4px 18px #10291f0a;--shadow-deep:0 10px 32px #132e2420;
}
html[data-theme="plum"]{
 --navy:#34293f;--forest:#755084;--jade:#8b639c;--mint:#f2ebf6;--wash:#f8f5fa;--ink:#3c3045;--muted:#7c7083;--line:#eadfeb;
 --surface:#fff;--soft:#f6f0f8;--hero1:#f4eafa;--hero2:#fffdfc;--accent:#c8aacb;--focus:#8c5aa0;--header-ink:#fffaff;--bubble:#745083;--shadow:0 4px 18px #3f24480b;--shadow-deep:0 10px 32px #32233e20;
}
html[data-theme="graphite"]{
 --navy:#292d2f;--forest:#565751;--jade:#847254;--mint:#f2eee6;--wash:#f7f6f3;--ink:#333734;--muted:#757971;--line:#e7e3dd;
 --surface:#fff;--soft:#f6f3ee;--hero1:#f3f0e9;--hero2:#fffdfa;--accent:#c8ac77;--focus:#856d3f;--header-ink:#fffefd;--bubble:#4d514d;--shadow:0 4px 18px #292b270b;--shadow-deep:0 10px 32px #22252222;
}
html{font-synthesis:none;scroll-behavior:smooth}
html[data-font="compact"]{--f-base:14px;--f-small:12.5px;--f-xs:11.5px;--f-heading:23px;--f-answer:14px;--f-nav:10.5px}
:root,html[data-font="normal"]{--f-base:15.5px;--f-small:13.5px;--f-xs:12px;--f-heading:25px;--f-answer:15px;--f-nav:11px}
html[data-font="large"]{--f-base:17px;--f-small:14.5px;--f-xs:13px;--f-heading:26px;--f-answer:17px;--f-nav:11.5px}
body{background:var(--wash);color:var(--ink);font-size:var(--f-base);-webkit-text-size-adjust:100%}
button,input,textarea,select{font-family:inherit}
button{touch-action:manipulation;transition:background-color .13s,border-color .13s,transform .13s}
button:active:not(:disabled){transform:scale(.985)}
button:focus-visible,textarea:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
a{color:var(--forest);text-underline-offset:3px}
.app{background:var(--wash);max-width:620px;box-shadow:0 10px 45px #1c282212}
header{background:var(--navy);color:var(--header-ink);padding:calc(12px + env(safe-area-inset-top)) 16px 12px;box-shadow:0 2px 10px #12231e12}
.headrow{display:grid;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:10px;min-height:46px}
.logo{height:44px;width:44px;flex:0 0 44px;border-radius:14px;font-size:25px;color:white;background:linear-gradient(135deg,var(--jade),var(--forest));box-shadow:inset 0 1px 0 #ffffff33}
.brand-block{min-width:0;display:grid;align-content:center;gap:4px}
.brand{font-size:18px;line-height:1.1;font-weight:820;letter-spacing:-.02em;white-space:nowrap}
.brand small{font-size:10px;letter-spacing:.12em;color:#ffffffc9;margin-left:3px}
.status{margin:0;align-self:start;display:inline-flex;width:max-content;max-width:100%;border:0;background:transparent;padding:0;color:#e3ebe6;font-size:11px;line-height:1.2;overflow:hidden;text-overflow:ellipsis}
.status-dot{width:7px;height:7px;flex:0 0 7px}
.head-actions{display:flex;align-items:center;gap:6px}
.theme-open,.admin-link{height:44px;width:44px;min-width:44px;display:grid;place-items:center;border:1px solid #ffffff36;border-radius:13px;color:#fff;background:#ffffff13;padding:0}
.admin-link{font-size:21px}
.theme-open:hover,.admin-link:hover{background:#ffffff25}
.route>.content,.content{padding:23px 18px 30px}
.eyebrow{font-size:var(--f-xs);color:var(--jade);font-weight:850;letter-spacing:.12em}
.page-heading{font-size:var(--f-heading);line-height:1.35;letter-spacing:-.04em;font-weight:840;margin:5px 0 6px;overflow-wrap:anywhere}
.page-desc{font-size:var(--f-small);line-height:1.65;margin:0 0 19px;color:var(--muted)}
.section-card,.panel{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:18px;margin:13px 0 17px}
.section-card h2{font-size:18px;color:var(--ink)}
.primary,.send,.design-done{background:var(--forest);color:white;border-radius:13px;font-size:var(--f-base);font-weight:780}
.primary{min-height:50px}
.secondary{background:var(--soft);color:var(--forest);border-color:var(--line);min-height:46px;font-size:var(--f-small);border-radius:12px}
.inline-link,.thin-btn{color:var(--forest);min-height:40px;font-size:var(--f-small)}
.small-title{font-size:var(--f-small);font-weight:800;color:var(--ink);margin:15px 0 8px}
.segmented{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:4px;gap:4px}
.segmented button{min-height:43px;font-size:var(--f-small);color:var(--muted);border-radius:10px}
.segmented button.on{background:var(--surface);color:var(--forest);box-shadow:0 2px 7px #0000000b}
.level-note{font-size:var(--f-small);margin:12px 1px;color:var(--muted)}
.lesson-grid{gap:11px}
.lesson-item{position:relative;min-height:76px;border-color:var(--line);border-radius:16px;padding:15px 17px 15px 14px;background:var(--surface);box-shadow:var(--shadow);font-size:var(--f-base);line-height:1.42;font-weight:730}
.lesson-num{height:43px;flex-basis:43px;border-radius:12px;background:var(--mint);color:var(--forest);font-weight:850;font-size:15px}
.lesson-meta,.tiny{font-size:var(--f-xs);color:var(--muted);line-height:1.5}
.lesson-detail{font-size:var(--f-base);line-height:1.85}
.lesson-detail p,.lesson-detail li{font-size:var(--f-base);line-height:1.75}
.diagram{background:var(--soft);border-color:var(--line);padding:18px;border-radius:16px}
.arrow{color:var(--jade)}
.tagline{background:var(--mint);color:var(--forest);font-size:var(--f-xs);padding:5px 8px;border-radius:8px}
.quiz-choice{font-size:var(--f-base);line-height:1.5;min-height:52px;border-color:var(--line);border-radius:13px;padding:13px 15px;color:var(--ink);margin:9px 0;box-shadow:0 1px 5px #162c2210}
.quiz-choice.selected,.choices button.chosen{border-color:var(--forest);background:var(--mint);box-shadow:0 0 0 1px var(--forest) inset}
.quiz-progress{height:8px;background:var(--line)}
.quiz-progress span{background:var(--jade)}
.search-field,.field input,.compose textarea{background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:12px;min-height:50px;font-size:16px;padding:12px 14px}
.search-field::placeholder,textarea::placeholder{color:var(--muted);opacity:.9}
.glossary-term{border:1px solid var(--line);border-radius:14px;padding:15px 16px;margin:11px 0;background:var(--surface);box-shadow:var(--shadow)}
.glossary-term dt{color:var(--ink);font-size:var(--f-base);line-height:1.5}
.glossary-term dd{color:var(--muted);font-size:var(--f-small);line-height:1.8;margin-top:8px}
.qa-library-card{border-color:var(--line);background:var(--surface);border-radius:16px;box-shadow:var(--shadow);margin:11px 0}
.qa-library-open{background:var(--surface);color:var(--ink);padding:17px;min-height:74px}
.qa-library-title{font-size:var(--f-base);line-height:1.6;font-weight:780}
.qa-library-meta,.qa-library-tip,.qa-result-header{font-size:var(--f-xs);color:var(--muted)}
.qa-library-body{font-size:var(--f-base);line-height:1.85;color:var(--ink);padding:17px}
.qa-library-rule{font-size:var(--f-small);background:var(--soft);color:var(--ink);padding:12px 13px;border-radius:12px}
.qa-match{font-size:var(--f-small);background:var(--soft);border-color:var(--line);color:var(--ink);min-height:48px}
.subnav{background:var(--surface);padding:9px 13px 8px;border-bottom-color:var(--line);gap:6px}
.subnav button{min-height:47px;color:var(--muted);font-size:var(--f-small);background:transparent;border-radius:12px}
.subnav button[aria-selected="true"]{background:var(--mint);color:var(--forest)}
.feed{padding:17px 16px 22px;min-height:26dvh}
.welcome{position:relative;isolation:isolate;overflow:hidden;background:linear-gradient(130deg,var(--hero1),var(--hero2));border:1px solid var(--line);border-radius:20px;padding:24px 19px;box-shadow:var(--shadow)}
.welcome::before{content:'♠';position:absolute;top:-29px;right:-2px;font-size:125px;line-height:1;color:var(--jade);opacity:.075;z-index:-1;pointer-events:none}
.welcome h1{font-size:clamp(24px,6vw,29px);line-height:1.43;letter-spacing:-.045em;margin:7px 0 10px;font-weight:850}
.lead{font-size:var(--f-small);color:var(--muted);line-height:1.7;max-width:28em}
.chips{gap:9px;margin-top:11px}
.chip{background:var(--surface);border-color:var(--line);color:var(--forest);font-size:var(--f-small);min-height:45px;padding:11px 14px;font-weight:730}
.hint,.empty{background:var(--soft);color:var(--muted);font-size:var(--f-small);border-radius:14px;line-height:1.7}
.answer-card{background:var(--surface);border-color:var(--line);border-radius:17px;box-shadow:var(--shadow);padding:17px;margin:14px 0}
.card-label{font-size:var(--f-xs);color:var(--jade);font-weight:850}
.card-main{font-size:var(--f-answer);line-height:1.85;color:var(--ink);font-weight:500}
.card-main.strong{font-size:calc(var(--f-answer) + 1px);line-height:1.65;font-weight:750}
.card-detail,.source{font-size:var(--f-small);line-height:1.75;color:var(--muted)}
.bubble{background:var(--bubble);font-size:var(--f-base);line-height:1.65;border-radius:17px 17px 5px 17px;padding:13px 16px}
.composer{background:var(--surface);border-color:var(--line);padding:10px 14px 10px;box-shadow:0 -4px 18px #0000000c}
.compose{gap:9px}
.compose textarea{min-height:52px;height:52px;max-height:145px;background:var(--wash);line-height:1.45;flex:1;min-width:0;resize:vertical;padding:13px 14px}
.send{flex:0 0 52px;height:52px;border-radius:14px;font-size:21px}
.composer-bottom{margin-top:8px}
.subtle{font-size:var(--f-xs);color:var(--muted)}
.privacy-notice{border-color:var(--line);background:var(--soft);font-size:var(--f-xs);line-height:1.7;border-radius:12px;margin:10px 15px;padding:13px}
.privacy-notice strong{font-size:var(--f-small);color:var(--ink)}
.choices{gap:10px}
.choices button{min-height:49px;background:var(--surface);border-color:var(--line);border-radius:12px;color:var(--ink);font-size:var(--f-small);padding:11px 8px}
.field label,.field .small-title,.step{font-size:var(--f-small);color:var(--ink)}
.field-note,.notice,.ok-notice,.alert,.qa-panel p{font-size:var(--f-small);line-height:1.7}
.stepnum{width:26px;height:26px;font-size:13px;background:var(--mint);color:var(--forest)}
.history-card{background:var(--surface);border-color:var(--line);border-radius:15px;box-shadow:var(--shadow);padding:16px}
.history-q{font-size:var(--f-base)}
.history-a{font-size:var(--f-small);color:var(--muted)}
.history-date,.footer{font-size:var(--f-xs);color:var(--muted)}
.footer{line-height:1.65;background:var(--wash);border-color:var(--line);padding:18px 15px}
#questionRoute .composer{bottom:calc(76px + env(safe-area-inset-bottom))}
.app{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
.main-nav{grid-template-columns:repeat(5,minmax(0,1fr));height:calc(76px + env(safe-area-inset-bottom));background:var(--surface);border-color:var(--line);padding:5px 6px env(safe-area-inset-bottom);box-shadow:0 -5px 22px #142b1e14;gap:3px}
.main-nav button{font-size:var(--f-nav);color:var(--muted);font-weight:700;gap:4px;min-height:56px;border-radius:12px;line-height:1.1;padding:5px 2px;white-space:normal}
.main-nav button[aria-current="page"]{color:var(--forest);background:var(--mint);font-weight:820}
.main-nav .n-ico{font-size:initial;display:grid;place-items:center;height:25px}
.main-nav .n-ico svg{width:21px;height:21px}
.main-nav button[data-main="question"] .n-ico svg{width:23px;height:23px}
/* Accessible style panel */
.design-dialog{width:min(92vw,480px);max-height:min(85dvh,730px);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-deep);padding:0;color:var(--ink);background:var(--surface);overflow:auto;position:fixed;inset:0;margin:auto}
.design-dialog::backdrop{background:#0e1717a8;backdrop-filter:blur(3px)}
.design-head{position:sticky;top:0;background:var(--surface);z-index:2;display:flex;justify-content:space-between;gap:12px;padding:23px 21px 16px;border-bottom:1px solid var(--line)}
.design-head h2{font-size:21px;font-weight:840;margin:4px 0;line-height:1.3}
.design-head p{color:var(--muted);font-size:var(--f-small);margin:4px 0 0}
.design-close{width:44px;height:44px;flex:0 0 44px;border:1px solid var(--line);background:var(--soft);color:var(--ink);border-radius:12px;font-size:24px;line-height:1}
.design-inner{padding:18px 19px 8px}
.design-section-title{font-size:15px;font-weight:820;margin:0 0 12px;display:flex;align-items:center;justify-content:space-between}
.design-section-title span{font-size:12px;font-weight:500;color:var(--muted)}
.theme-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.theme-option{position:relative;display:flex;flex-direction:column;align-items:flex-start;text-align:left;gap:5px;min-height:127px;padding:14px 12px;border-radius:16px;background:var(--surface);border:1.5px solid var(--line);color:var(--ink)}
.theme-option[aria-pressed="true"]{border-color:var(--forest);box-shadow:0 0 0 1px var(--forest) inset;background:var(--soft)}
.theme-option strong{font-size:14px;line-height:1.3}
.theme-option small{font-size:12px;color:var(--muted);line-height:1.4}
.theme-option .palette{display:flex;align-items:center;gap:5px;margin-bottom:6px}
.theme-option .palette i{display:block;width:25px;height:25px;border-radius:8px;border:1px solid #00000012}
.theme-option[data-theme-option="emerald"] .palette i:nth-child(1){background:#133329}
.theme-option[data-theme-option="emerald"] .palette i:nth-child(2){background:#17664f}
.theme-option[data-theme-option="emerald"] .palette i:nth-child(3){background:#f5f7f3}
.theme-option[data-theme-option="navy"] .palette i:nth-child(1){background:#142c47}
.theme-option[data-theme-option="navy"] .palette i:nth-child(2){background:#235e85}
.theme-option[data-theme-option="navy"] .palette i:nth-child(3){background:#f3f7fa}
.theme-option[data-theme-option="plum"] .palette i:nth-child(1){background:#34293f}
.theme-option[data-theme-option="plum"] .palette i:nth-child(2){background:#755084}
.theme-option[data-theme-option="plum"] .palette i:nth-child(3){background:#f8f5fa}
.theme-option[data-theme-option="graphite"] .palette i:nth-child(1){background:#292d2f}
.theme-option[data-theme-option="graphite"] .palette i:nth-child(2){background:#c8ac77}
.theme-option[data-theme-option="graphite"] .palette i:nth-child(3){background:#f7f6f3}
.theme-check{display:none;position:absolute;top:10px;right:10px;color:var(--forest);font-size:17px;font-weight:bold}
.theme-option[aria-pressed="true"] .theme-check{display:block}
.font-picker{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;background:var(--soft);border:1px solid var(--line);padding:5px;border-radius:13px}
.font-picker button{min-height:45px;border:0;background:transparent;color:var(--muted);border-radius:10px;font-size:var(--f-small);font-weight:700;padding:8px 1px}
.font-picker button[aria-pressed="true"]{background:var(--surface);color:var(--forest);box-shadow:0 1px 7px #00000013}
.design-footnote{font-size:var(--f-xs);line-height:1.6;color:var(--muted);margin:17px 0 6px}
.design-done{display:block;margin:12px auto 18px;width:calc(100% - 38px);min-height:50px;border:0}
@media(min-width:680px){.app{box-shadow:0 0 48px #111f1714}.route>.content{padding:29px 27px 42px}.feed{padding:24px}}
@media(max-width:350px){header{padding-left:12px;padding-right:12px}.headrow{grid-template-columns:38px minmax(0,1fr) auto;gap:7px}.logo{width:38px;height:38px;font-size:22px}.brand{font-size:15px}.brand small{font-size:9px}.head-actions{gap:4px}.theme-open,.admin-link{width:44px;min-width:44px;height:44px}.status{font-size:10px}.main-nav button{font-size:10px}.main-nav .n-ico svg{width:20px;height:20px}.content,.route>.content{padding-left:14px;padding-right:14px}.theme-option{padding-left:10px;min-height:120px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}


/* v0.6.4: cohesive cards and blue information hierarchy across every route */
:root{--success-bg:#eaf7f0;--success-ink:#196648;--warning-bg:#fff6e7;--warning-ink:#835c20}
html[data-theme="navy"]{
 --navy:#142c47;--forest:#235e85;--jade:#327ba8;--mint:#e8f2fa;--wash:#f3f7fa;--ink:#203449;--muted:#526b80;--line:#dbe5ef;
 --surface:#ffffff;--soft:#edf4fa;--hero1:#e9f3fc;--hero2:#ffffff;--focus:#236f9e;--bubble:#235e85;
 --shadow:0 5px 18px #142c470a;--shadow-deep:0 15px 38px #13284129;
}
.app{border-left:1px solid var(--line);border-right:1px solid var(--line)}
header{background:linear-gradient(118deg,var(--navy) 12%,var(--forest) 140%);box-shadow:0 3px 18px #081c3014}
.logo{background:linear-gradient(145deg,var(--jade),var(--forest));border:1px solid #ffffff27}
.brand{letter-spacing:-.025em}
.status{color:#e6f3fc}
.head-actions .theme-open,.head-actions .admin-link{background:#ffffff12;border:1px solid #ffffff33}
.route>.content,.content{color:var(--ink)}
.eyebrow{font-weight:830;letter-spacing:.105em}
.page-heading{font-weight:820;line-height:1.33}
.page-desc{max-width:46ch}
.section-card,.panel,.lesson-item,.glossary-term,.qa-library-card,.history-card{transition:box-shadow .13s ease,border-color .13s ease}
.lesson-item:focus-visible,.qa-library-open:focus-visible,.quiz-choice:focus-visible,.glossary-term a:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.lesson-item{border:1px solid var(--line);background:var(--surface)}
.lesson-item:hover,.glossary-term:hover,.qa-library-card:hover{border-color:var(--accent)}
.lesson-num{background:var(--mint);color:var(--forest)}
.diagram{background:var(--soft);border:1px dashed var(--accent);color:var(--ink)}
.quiz-choice{background:var(--surface);border-color:var(--line);color:var(--ink)}
.quiz-choice.selected,.choices button.chosen{background:var(--mint);border-color:var(--forest);color:var(--ink)}
.quiz-progress{background:var(--line)}
.quiz-progress span{background:var(--jade)}
.qa-library-rule,.qa-match,.hint,.empty{background:var(--soft);color:var(--ink)}
.qa-library-card,.qa-library-open,.qa-library-body{background:var(--surface);color:var(--ink)}
.qa-library-open:focus-visible{outline-color:var(--focus)}
.qa-panel{border-color:var(--line);background:var(--surface)}
.qa-library-nav button,.admin-actions button{min-height:46px}
.glossary-term dt{color:var(--ink)}
.glossary-term dd{color:var(--muted)}
.field input,.search-field,.compose textarea{background:var(--surface);border-color:var(--line);color:var(--ink)}
.search-field:focus-visible,input:focus-visible,textarea:focus-visible{outline-color:var(--focus)}
.subnav button[aria-selected="true"],.main-nav button[aria-current="page"]{background:var(--mint);color:var(--forest)}
.main-nav button[aria-current="page"]{position:relative}
.main-nav button[aria-current="page"]::before{content:"";position:absolute;top:3px;left:calc(50% - 12px);width:24px;height:3px;border-radius:20px;background:var(--jade)}
.main-nav{box-shadow:0 -5px 22px #142c4712;border-top:1px solid var(--line)}
.adminlist .section-card{background:var(--surface);border:1px solid var(--line)}
#adminRoute .section-card{border:1px solid var(--line)}
.notice{background:var(--warning-bg);color:var(--warning-ink);border-color:#e9d6ae}
.ok-notice{background:var(--success-bg);color:var(--success-ink)}
#adminFeedback{overflow-wrap:anywhere}
.privacy-details{margin:10px 15px 0;border:1px solid var(--line);border-radius:12px;background:var(--surface);overflow:hidden}
.privacy-details summary{min-height:44px;display:flex;align-items:center;padding:9px 13px;color:var(--muted);font-size:var(--f-xs);font-weight:700;cursor:pointer;list-style:none;gap:8px}
.privacy-details summary::-webkit-details-marker{display:none}
.privacy-details summary::before{content:"＋";display:grid;place-items:center;width:20px;height:20px;flex:0 0 20px;border-radius:6px;background:var(--mint);color:var(--forest);font-size:14px}
.privacy-details[open] summary::before{content:"−"}
.privacy-details .privacy-notice{margin:0;border:0;border-top:1px solid var(--line);background:var(--soft);border-radius:0}
.design-dialog{color:var(--ink);background:var(--surface)}
.design-option{background:var(--surface)}
.footer{background:var(--wash);color:var(--muted)}
@media(min-width:620px){.app{border-radius:0}}
@media(max-width:350px){.main-nav{padding-left:3px;padding-right:3px}.page-heading{font-size:clamp(21px,6vw,var(--f-heading))}.route>.content,.content{padding-left:14px;padding-right:14px}}