/* Shared design system for learner and administration. */
:root{--ink:#24324b;--muted:#7b879b;--accent:#5169d8;--line:#e5e9f2;--canvas:#f5f7fc;--surface:#fff;--soft:#eef1ff}body{background:var(--canvas);color:var(--ink)}header{height:76px;background:white;padding:0 28px;border-color:var(--line)}header .brand{display:flex;align-items:center;gap:9px;color:#293854;font-size:23px;letter-spacing:-.7px}header .brand>.icon{width:27px;height:27px;color:var(--accent)}header small{color:#939caf;border-left:1px solid var(--line);padding-left:16px;margin-left:10px;font-size:12px;letter-spacing:0;font-weight:500}.icon{width:19px;height:19px;flex:none;vertical-align:middle}button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;background:var(--accent);border-radius:9px;font-size:13px;line-height:1.5}button.secondary{background:var(--soft);color:var(--accent)}button:hover{box-shadow:none}button:focus-visible,a:focus-visible{outline-color:#8b9ae9}input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px #5169d810}.layout{grid-template-columns:216px minmax(0,1fr);min-height:calc(100vh - 76px)}nav{top:76px;height:calc(100vh - 76px);padding:28px 14px;background:#fff;gap:8px}nav button{display:flex;justify-content:flex-start;padding:13px 15px;gap:12px;color:#7b879b;background:transparent;font-size:13px;min-height:47px}nav button.active{background:var(--soft);color:var(--accent);box-shadow:none;font-weight:600}nav button:hover{background:#f5f7fd}.nav-caption{font-size:10px;letter-spacing:1.8px;color:#a1aabd;padding:0 16px 12px}.profile{margin-top:auto;display:flex;align-items:center;gap:11px;padding:20px 8px 0;border-top:1px solid var(--line)}.profile strong{font-size:13px}.profile small{display:block;font-size:11px;color:#98a2b3;margin-top:4px}.avatar{width:35px;height:35px;border-radius:10px;display:grid;place-items:center;background:var(--soft);color:var(--accent);font-size:12px;font-weight:600;flex:none}main{padding:34px clamp(24px,3.4vw,52px) 50px;max-width:1450px}h1{font-size:28px;color:var(--ink)}h2{color:var(--ink);font-size:17px}.eyebrow{color:#93a0b5}.card{border:1px solid var(--line);border-radius:14px;box-shadow:0 3px 16px #23314c03;background:white}.pill{color:var(--accent);background:var(--soft);border-radius:6px}.top-actions button{color:var(--accent);background:var(--soft);border:0}.top-actions{gap:14px}.top-actions a{color:var(--muted)}.hero{background:linear-gradient(110deg,#edf0ff,#f1f3fe);border:1px solid #e2e7fb}.hero:after{color:#d6ddf7}.course-cover{background:linear-gradient(140deg,#f0edfb,#e6ecfa);color:#7c88ad}.course-cover:after{color:#909bbb}.stats .stat{color:var(--ink)}.meaning{color:var(--ink)}.row button{font-size:12px}.row strong{color:var(--ink)}.row .toolbar{gap:8px}.segments{display:inline-flex;align-items:center;gap:4px;background:#f3f5fa;border:1px solid var(--line);padding:4px;border-radius:10px;max-width:100%;flex-wrap:wrap}.segments button{min-height:32px;padding:7px 12px;background:transparent;color:#818ca1;border:1px solid transparent;font-weight:500;font-size:12px;white-space:nowrap;gap:6px;border-radius:7px;box-shadow:none;flex-shrink:0}.segments button .icon{width:16px;height:16px}.segments button.selected{background:white;color:var(--accent);border-color:#e0e5f5;box-shadow:0 2px 5px #1f2c4c06;font-weight:600}.segments button:hover{color:var(--accent);background:#fff}.choice-block{display:flex;flex-direction:column;align-items:flex-start;gap:10px;min-width:0}.choice-label{color:#8b96aa;font-size:11px;font-weight:500;line-height:1.4}.top-actions .segments{background:transparent;border:0;padding:0;gap:0}.top-actions .segments button{font-size:11px;padding:7px 9px;min-height:32px}.top-actions .segments button.selected{background:var(--soft);border:1px solid transparent;box-shadow:none}.study-options{background:white;border:1px solid var(--line);padding:24px;border-radius:14px;margin:22px 0 16px}.option-title{display:flex;align-items:center;gap:10px;color:var(--accent);margin-bottom:23px}.option-title h2{margin:0;font-size:15px}.choice-grid{display:flex;flex-wrap:wrap;gap:22px 28px}.choice-grid input{width:95px;height:43px;padding:8px 12px;font-size:13px}.study-start{border-top:1px solid var(--line);margin-top:24px;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:16px}.study-start>span{font-size:11px;color:#a0a8b7}.audio-settings{background:white;border:1px solid var(--line);border-radius:14px;padding:20px 24px;margin:16px 0 24px}.audio-heading{display:flex;align-items:center;gap:10px;margin-bottom:19px;color:var(--accent)}.audio-heading strong{font-size:14px;color:var(--ink)}.audio-heading small{font-size:11px;margin-left:12px;color:#98a3b6}.audio-options{display:flex;flex-wrap:wrap;gap:16px 24px}.audio-options .segments button{min-width:44px}.audio-note{font-size:10px;color:#a0aabd;line-height:1.8;margin-top:15px}.lesson-tabs{margin:22px 0}.lesson-tabs .segments{background:transparent;border:0;padding:0;gap:8px}.lesson-tabs button{background:#fff;border:1px solid var(--line);min-height:38px}.lesson-tabs button.selected{background:var(--soft);border-color:#cfd7f5}.vocabulary-list .card-heading{margin-bottom:0;padding-bottom:16px;border-bottom:1px solid var(--line)}.card-heading h2{display:flex;align-items:center;gap:9px;font-size:15px}.vocabulary-list .row{padding:20px 0;flex-wrap:nowrap}.word-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}.word-actions button,.detail [data-example]{padding:9px 12px;min-height:37px;background:var(--soft);color:var(--accent)}.favorite-button{background:#f5f6fa!important;color:#8c97a9!important}.favorite-button:has(svg[fill="currentColor"]){background:#fff4e2!important;color:#c4964f!important}.row p{color:#8994a7}.wordcard{max-width:820px;padding:32px 40px;margin-top:22px}.word{font-size:56px;margin-top:16px}.wordcard .center{padding:8px 0 12px}.wordcard .center .toolbar{margin:20px 0 16px}.wordcard .detail{margin-top:10px;padding-top:22px}.detail>p{font-size:13px}.detail .row>div{font-size:15px}.detail .row>div p{font-size:12px}.study-header{display:flex;align-items:center;justify-content:space-between;margin:0 0 20px}.study-progress{display:flex;align-items:center;gap:14px;color:#9aa5b7;font-size:12px}.progress-track{width:160px;height:5px;background:#e8ecf5;border-radius:5px;overflow:hidden}.progress-track i{display:block;height:100%;background:var(--accent);border-radius:5px}.is-loading .icon{animation:pulse 1s infinite}.is-playing{background:var(--accent)!important;color:white!important}.is-playing .icon{animation:pulse .9s infinite}.is-loading{opacity:.65;cursor:progress}.source-text{font-size:21px;color:#44516a;line-height:2.2}.admin-stat .stat{color:var(--ink)}.stat-icon{background:var(--soft);color:var(--accent)}.account-table .pill{background:var(--soft);color:var(--accent)}.upload-area{background:#f8f9ff;border-color:#d1d9f3}.upload-symbol{color:var(--accent);background:var(--soft)}.resource-hint{background:#f6f8fc}.course-buttons{align-items:flex-end;justify-content:space-between}.course-buttons .segments{background:transparent;border:0;padding:0}.course-buttons .segments button{border:1px solid var(--line);background:#fff;white-space:normal;text-align:left}.course-buttons .segments button.selected{background:var(--soft);border-color:#ccd5f8}.login{border-top:3px solid var(--accent)}.login h1{font-size:25px}.login button{margin-top:14px}.admin-stat .stat-icon .icon{width:21px;height:21px}#toast{background:#293854}
@keyframes pulse{50%{opacity:.4}}@media(max-width:1100px){.choice-grid{gap:20px}.audio-options{gap:16px}.top-actions{gap:8px}header .brand small{display:none}}@media(max-width:700px){header{height:auto;min-height:66px;padding:12px 16px;flex-wrap:wrap;gap:10px}header .brand{font-size:20px}header .brand>.icon{width:23px;height:23px}.top-actions{flex-wrap:wrap;gap:8px}.top-actions .segments button{font-size:10px;padding:6px 7px}.top-actions button{font-size:11px;padding:8px 11px;min-height:32px}.top-actions button .icon{width:15px;height:15px}.layout{display:block}nav{position:relative;top:0;height:auto;flex-direction:row;padding:10px 12px;border-bottom:1px solid var(--line);overflow:visible;gap:5px}nav button{flex:1;justify-content:center;font-size:12px;min-height:40px;padding:10px 6px;gap:7px}nav .icon{width:17px;height:17px}.nav-caption,.profile{display:none}main{padding:24px 16px 40px}h1{font-size:24px}.study-options,.audio-settings{padding:20px}.choice-grid{gap:20px}.choice-grid .choice-block{width:100%}.choice-grid .choice-block:last-child{width:auto}.segments{gap:2px;padding:3px}.segments button{font-size:11px;padding:8px 10px}.audio-options{gap:16px}.audio-options .choice-block:last-child{width:100%}.audio-options .choice-block:last-child .segments{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));width:100%}.audio-heading small{display:block;margin:4px 0 0}.audio-note{font-size:10px}.study-start>span{max-width:160px;line-height:1.7}.study-start button{white-space:nowrap}.vocabulary-list .row{flex-wrap:wrap;gap:14px}.word-actions{margin-left:auto}.word-actions button{font-size:11px;padding:8px 10px}.wordcard{padding:28px 20px}.word{font-size:48px}.wordcard .detail .row{align-items:flex-start}.wordcard .detail .row button{margin-left:auto}.progress-track{width:90px}.source-text{font-size:19px}.hero h2{font-size:20px}.card-heading h2{font-size:14px}.account-layout #userform button{width:100%}.course-buttons{gap:20px}.course-buttons .choice-block{width:100%}.account-table td{overflow-wrap:anywhere}.row strong{font-size:18px}}
@media(prefers-reduced-motion:reduce){.is-loading .icon,.is-playing .icon{animation:none}}
.audio-settings{position:relative}.audio-status{position:absolute;right:24px;top:16px;display:flex;align-items:center;gap:12px;font-size:10px;color:#909bb0}.audio-status button{font-size:10px;padding:5px 9px;min-height:28px;color:#9ba6ba;background:#f7f8fc}.audio-heading{padding-right:240px}@media(max-width:1000px){.audio-heading{padding-right:0}.audio-status{position:static;margin:-4px 0 20px;justify-content:space-between}}
@media(max-width:700px){.quick-list .row .toolbar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));width:100%}.quick-list .row .toolbar button{width:100%;justify-content:center}.audio-options .choice-block:last-child .segments button{padding:8px}.word-actions button{min-width:75px}}
/* One shared palette across both portals. */
:root{--ink:#213b3b;--muted:#728784;--accent:#14786f;--line:#e1eae6;--canvas:#f4f8f6;--soft:#e8f3ee}.segments button.selected{border-color:#d8e8e0}.row button{background:var(--soft);color:var(--accent)}.upload-area{background:#f5faf7;border-color:#c7dfd4}.resource-hint{background:#f2f7f4}.account-table .pill{background:var(--soft);color:var(--accent)}.stat-icon{background:var(--soft);color:var(--accent)}.profile,.nav-foot{color:var(--ink)}