.dag8{max-width:1080px;margin:30px auto;padding:28px;border-radius:22px;background:linear-gradient(130deg,#e8f7ff,#f7edff);color:#222;font-family:system-ui,sans-serif;box-shadow:0 12px 30px #1d356014}.dag8 *{box-sizing:border-box}.dag8 h2{color:#4534a0;font-size:clamp(22px,3vw,32px);margin:0 0 12px}.dag8 h3{margin:18px 0 12px}.dag8 button{cursor:pointer;border:0;border-radius:13px;padding:14px 17px;font-weight:700;font-size:16px;min-height:48px;transition:transform .12s}.dag8 button:hover:not(:disabled){transform:translateY(-2px)}.dag8 button:disabled{opacity:.45;cursor:not-allowed}.dag8-langs,.dag8-levels,.dag8-options{display:grid;gap:12px;margin:18px 0}.dag8-langs{grid-template-columns:repeat(4,minmax(0,1fr))}.dag8-levels{grid-template-columns:repeat(5,minmax(0,1fr))}.dag8-options{grid-template-columns:1fr 1fr}.dag8-lang,.dag8-level,.dag8-choice{background:white;color:#164b8e;box-shadow:0 3px 12px #12294d10}.dag8-lang.active,.dag8-primary{background:#5944d9!important;color:white!important}.dag8-choice{text-align:left}.dag8-muted{color:#53647a}.dag8-error{color:#9c2020;background:#ffe6e6;padding:14px;border-radius:12px}.dag8-login,.dag8-back,.dag8-audio{background:#fff;color:#5944d9;border:1px solid #a9a0f7!important;margin:6px}.dag8-question{font-size:22px;line-height:1.5}@media(max-width:650px){.dag8{padding:16px}.dag8-langs,.dag8-options{grid-template-columns:1fr 1fr}.dag8-levels{grid-template-columns:repeat(3,1fr)}.dag8 button{font-size:14px;padding:11px 8px}}
.dag8-audio-controls{display:flex;gap:8px;flex-wrap:wrap;margin-top:15px}.dag8-audio-controls button{flex:1 1 150px}
/* Version 9.0: responsive learning studio */
.dag8{background:linear-gradient(145deg,#eef6ff,#faf5ff);border:1px solid #e3e9fb}.dag9-header{display:grid;gap:8px}.dag9-stats,.dag9-controls,.dag9-tabs{display:flex;gap:10px;flex-wrap:wrap;margin:15px 0}.dag9-stats span{background:#fff;padding:8px 14px;border-radius:99px;font-weight:700;color:#4338a2}.dag9-tabs button{flex:1 1 160px;background:#fff;color:#4338a2;border:1px solid #c9c3ee}.dag9-tabs .active{background:#5944d9;color:#fff}.dag9-progress{height:9px;background:#e2e8f0;border-radius:20px;overflow:hidden}.dag9-progress-fill{height:100%;background:#7660f2;transition:width .2s}.dag9-controls button{flex:1 1 140px;background:#fff;color:#5944d9;border:1px solid #d6d0f6}.dag9-flash{width:100%;white-space:pre-line;min-height:210px;padding:30px!important;background:#fff;color:#263a76;border:2px solid #e0dbff!important;font-size:clamp(18px,3vw,26px)!important;line-height:1.6}.dag9-bubble{padding:18px 22px;background:#fff;border-radius:20px 20px 20px 4px;margin:15px 0;max-width:88%}.dag9-answer{background:#e5ddff;margin-left:auto;border-radius:20px 20px 4px 20px}.dag9-player audio{width:100%;margin:12px 0}.dag8 button:focus-visible{outline:3px solid #1e78db;outline-offset:2px}@media(max-width:650px){.dag8{margin:10px auto;padding:16px;border-radius:16px}.dag8-langs{grid-template-columns:repeat(2,minmax(0,1fr))}.dag8-options{grid-template-columns:1fr}.dag8-levels{grid-template-columns:repeat(2,minmax(0,1fr))}.dag9-tabs button{flex:1 1 42%}.dag9-bubble{max-width:100%}.dag8 button{min-height:48px}}

/* 9.1 */
.dag91-dialogue{display:grid;gap:10px;margin-top:18px}.dag91-dialogue .dag9-bubble{margin:0;transition:opacity .15s}.dag91-dialogue .dag91-current{outline:3px solid #7162e8;outline-offset:2px}.dag91-dialogue .dag91-future{opacity:.45}.dag91-translation{font-size:14px;color:#526077;margin-top:5px}.dag91-record{padding:14px;background:#fff;border-radius:12px;margin:12px 0}.dag91-record audio{width:100%}@media(max-width:650px){.dag91-dialogue .dag9-bubble{max-width:95%}}

/* v9.2 interactive dialogue */
.dag92-actions{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}.dag92-actions button{flex:1 1 180px}.dag92-hidden{font-style:italic;color:#59637a}.dag92-practice{border:2px dashed #7162e8}.dag92-feedback{background:#fff;border-left:4px solid #5944d9;border-radius:10px;padding:14px;line-height:1.6;margin:12px 0}.dag91-dialogue .dag91-future{opacity:.65}.dag91-dialogue .dag91-future p{font-style:italic}@media(max-width:650px){.dag92-actions{display:grid;grid-template-columns:1fr}.dag92-actions button{width:100%}}

/* v9.3: responsive compact dialogue controls */
.dag91-dialogue{scroll-margin-top:24px}.dag9-bubble{overflow-wrap:anywhere}.dag9-controls button{min-height:46px}@media(max-width:650px){.dag9-controls{display:grid;grid-template-columns:1fr 1fr;gap:8px}.dag9-controls button{width:100%;white-space:normal}.dag91-dialogue .dag9-bubble{max-width:100%;padding:16px}.dag9-stats{flex-wrap:wrap}}

/* v9.9 learning dashboard */
.dag-report-scroll{overflow-x:auto;margin:16px 0}.dag-report{border-collapse:collapse;width:100%;min-width:520px}.dag-report th,.dag-report td{padding:12px 9px;text-align:left;border-bottom:1px solid #dce5ef}.dag-report th{font-weight:700}.dag-report tbody tr:nth-child(even){background:rgba(120,140,170,.07)}

/* 7-day activity summary */
.da-daily{margin-top:18px;padding:16px;border:1px solid #dce5ef;border-radius:16px;background:#f8fbff;color:#23324a}.da-daily h3{margin:0 0 10px}.da-daily-bars{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:8px;align-items:end;min-height:148px}.da-daily-col{display:flex;align-items:center;flex-direction:column;gap:4px;font-size:12px}.da-daily-track{height:95px;width:100%;max-width:44px;border-radius:8px;background:#e7edf5;display:flex;align-items:flex-end;overflow:hidden}.da-daily-fill{width:100%;background:#3586da;border-radius:8px 8px 0 0;min-height:0}.da-daily-col small{font-size:11px}.da-daily p{line-height:1.6}

/* Achievement badges: local-only, responsive and accessible. */
.da-achievements{margin-top:18px}.da-achievement-list{display:flex;flex-wrap:wrap;gap:8px}.da-achievement{display:inline-block;padding:8px 12px;border-radius:12px;border:1px solid #cbd5e1;font-size:14px}.da-earned{background:#ecfdf5;color:#065f46;border-color:#86efac}.da-locked{background:#f8fafc;color:#64748b}


/* Diệu An UI refresh 11.1.0: visual-only, keeps learning data and audio intact */
.dag8{--da-ui-ink:#233453;--da-ui-primary:#5746cc;--da-ui-border:#dfe6f4;--da-ui-shadow:0 12px 35px rgba(41,51,99,.09);color:var(--da-ui-ink);width:100%;max-width:1100px;margin:20px auto;padding:clamp(14px,3vw,30px);border-radius:24px;line-height:1.65;overflow-wrap:anywhere}
.dag8 :is(h2,h3,h4){line-height:1.3;letter-spacing:-.015em;overflow-wrap:anywhere}
.dag8 :is(button,input,select,textarea){font-family:inherit;max-width:100%}
.dag8 button{min-height:44px;line-height:1.35;touch-action:manipulation;transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease}
.dag8 button:focus-visible,.dag8 a:focus-visible,.dag8 :is(input,select,textarea):focus-visible{outline:3px solid #f0a82e;outline-offset:3px}
.dag8 button:not(:disabled):active{transform:scale(.98)}
.dag8 :is(input,select,textarea){min-height:44px;border:1px solid var(--da-ui-border);border-radius:12px;padding:10px 12px;background:#fff;color:var(--da-ui-ink)}
.dag8 :is(.da-panel,.dag8-card,.dag8-panel){box-shadow:var(--da-ui-shadow)}
.dag8 :is(.da-langs,.da-levels,.da-options,.dag8-langs,.dag8-levels,.dag8-options){gap:clamp(9px,1.5vw,15px)}
.dag8 :is(.da-lang,.da-level,.da-option,.dag8-lang,.dag8-level,.dag8-choice){min-width:0;white-space:normal;overflow-wrap:anywhere}
@media(max-width:767px){.dag8{margin:10px auto;padding:14px;border-radius:18px}.dag8 :is(.da-hero,.da-panel){padding:16px}.dag8 :is(.da-langs,.dag8-langs){grid-template-columns:repeat(2,minmax(0,1fr))}.dag8 :is(.da-levels,.dag8-levels){grid-template-columns:repeat(2,minmax(0,1fr))}.dag8 :is(.da-options,.dag8-options){grid-template-columns:1fr}.dag8 :is(.da-lang,.da-level,.da-option,.dag8-lang,.dag8-level,.dag8-choice){padding:12px 10px;font-size:15px}}
@media(max-width:390px){.dag8{padding:10px}.dag8 :is(.da-hero,.da-panel){padding:13px}.dag8 button{font-size:14px}}
@media(prefers-reduced-motion:reduce){.dag8 *,.dag8 *::before,.dag8 *::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}

/* Hybrid UI upgrade 11.2.0 */

/* Hybrid cartoon + modern classroom, scoped to this plugin */
.dag8{background:radial-gradient(circle at 6% 5%,#d7f9ed 0,transparent 28%),radial-gradient(circle at 95% 88%,#fff0c9 0,transparent 30%),linear-gradient(150deg,#eef7ff,#f7f1ff 65%,#fffaf1);border:1px solid #dce7f5;box-shadow:0 18px 55px rgba(38,57,111,.10);color:#263653}
.dag8 :is(button,a){-webkit-tap-highlight-color:transparent}
.dag8 button:not(:disabled):hover{box-shadow:0 8px 20px rgba(75,68,158,.14)}
.dag8 :is(.da-panel,.dag9-header){border:1px solid #e3eaf7}
.dag8 :is(.da-lang,.dag8-lang,.da-level,.dag8-level){position:relative;isolation:isolate;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.dag8 :is(.da-lang,.dag8-lang,.da-level,.dag8-level):not(:disabled):hover{transform:translateY(-3px);box-shadow:0 10px 22px rgba(73,78,142,.13)}
.dag8 :is(.da-lang,.dag8-lang,.da-level,.dag8-level):disabled{filter:saturate(.7);opacity:.63}
.dag8 :is(.da-option,.dag8-choice){line-height:1.55;text-align:left}
.dag8 :is(.da-progress,.dag9-progress){height:12px;border-radius:99px;box-shadow:inset 0 1px 3px #25325712}
.dag8 :is(.da-progress>div,.dag9-progress-fill){background:linear-gradient(90deg,#39c6b0,#5d7ff2,#9b6cdd)}
@media(max-width:767px){{.dag8{{width:100%;margin:8px auto;padding:12px;border-radius:18px}}.dag8 :is(.da-langs,.dag8-langs){{grid-template-columns:repeat(2,minmax(0,1fr))}}.dag8 :is(.da-levels,.dag8-levels){{grid-template-columns:repeat(2,minmax(0,1fr))}}.dag8 button{{min-height:46px}}}}

.dag8{max-width:1100px}
.dag8 .dag9-header{padding:clamp(16px,2.5vw,26px);border-radius:20px;background:linear-gradient(115deg,#f0f8ff,#f5efff);position:relative;overflow:hidden}
.dag8 .dag9-header::after{content:"💬 ✨";position:absolute;right:18px;top:9px;font-size:34px;opacity:.2;pointer-events:none}
.dag8 .dag9-header>*{position:relative;z-index:1}
.dag8 h2{font-size:clamp(23px,3vw,32px);color:#393b9c;font-weight:800}
.dag8 h3{color:#303c70;font-size:clamp(19px,2.3vw,23px);font-weight:800}
.dag8 .dag9-stats span{border:1px solid #e3e8f9;box-shadow:0 3px 10px #3c4b8a0a}
.dag8 .dag8-lang{min-height:58px;background:#fff;border:1.5px solid #e1e7f5;border-radius:15px}
.dag8 .dag8-lang.active{background:linear-gradient(105deg,#5149ce,#7060e6)!important;color:#fff!important;box-shadow:0 7px 18px #5149ce30}
.dag8 .dag9-tabs button{min-height:54px;border-radius:15px;border:1.5px solid #d9dff5;background:#fff;color:#3e4099}
.dag8 .dag9-tabs button.active{background:linear-gradient(105deg,#5149ce,#7963dc);color:#fff;box-shadow:0 7px 18px #5149ce24}
.dag8 .dag8-level{min-height:56px;border:1px solid #e2e8f6;border-radius:15px;background:linear-gradient(180deg,#fff,#fafbff)}
.dag8 .dag8-level.active{border:2px solid #6d60df;background:#f0eeff}
.dag8 .dag9-flash{border-radius:22px;background:linear-gradient(160deg,#fff,#f7fbff);box-shadow:0 9px 28px #2e3c7c12}
.dag8 .dag9-bubble{border:1px solid #e5e9f6;box-shadow:0 4px 14px #283a7510}
.dag8 .dag8-choice{border:1.5px solid #e2e7f5;border-radius:15px;min-height:64px}
@media(max-width:767px){.dag8 .dag9-header{padding:16px}.dag8 .dag9-tabs button{flex:1 1 calc(50% - 10px)}.dag8 .dag8-level{min-height:52px}.dag8 .dag8-langs{grid-template-columns:repeat(2,minmax(0,1fr))}}