:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#1d2433;background:#f5f6f8;font-synthesis:none;text-rendering:optimizeLegibility}
*{box-sizing:border-box}
body{margin:0;min-width:320px}
button,textarea,input,select{font:inherit}
button{border:0;border-radius:10px;padding:11px 16px;cursor:pointer;font-weight:650}
.app-shell{width:min(980px,calc(100% - 32px));margin:0 auto;padding:48px 0 72px}
.app-header{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:28px}
.eyebrow{margin:0 0 8px;font-size:11px;font-weight:700;letter-spacing:.12em;color:#687184}
h1,h2,p{margin-top:0}
h1{margin-bottom:10px;font-size:clamp(34px,5vw,56px);line-height:1}
h2{margin-bottom:6px;font-size:24px}
.subtitle,.section-heading p{margin-bottom:0;color:#687184}
.header-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.vocab-pill,.review-pill{display:inline-flex;align-items:center;gap:9px;padding:9px 12px;border:1px solid #dfe3ea;border-radius:999px;background:#fff;color:#687184;font-size:13px;font-weight:650;cursor:pointer}
.vocab-pill strong,.review-pill strong{color:#202938}
.review-pill{background:#f4f6f8}
body.review-mode .review-pill{background:#202938;color:#fff;border-color:#202938}
body.review-mode .review-pill strong{color:#fff}
.input-card,.reader-card{background:#fff;border:1px solid #dfe3ea;border-radius:18px;box-shadow:0 10px 28px rgba(31,41,55,.06)}
.input-card{padding:22px;margin-bottom:24px}
.section-heading,.reader-toolbar,.input-actions{display:flex;align-items:center;justify-content:space-between;gap:16px}
.section-heading{margin-bottom:16px}
textarea{width:100%;resize:vertical;min-height:220px;padding:16px;border:1px solid #d7dce5;border-radius:12px;outline:none;line-height:1.65;background:#fbfcfd}
textarea:focus{border-color:#98a2b3;background:#fff}
.input-actions{justify-content:flex-start;margin-top:14px}
.primary-button{background:#202938;color:#fff}
.secondary-button{background:#edf0f4;color:#2b3443}
.file-button{position:relative;overflow:hidden;background:#edf0f4;color:#2b3443;border-radius:10px;padding:11px 16px;cursor:pointer;font-weight:650}
.file-button input{position:absolute;inset:0;opacity:0;cursor:pointer}
.reader-card{overflow:hidden}
.reader-toolbar{padding:20px 22px;border-bottom:1px solid #e6e9ee}
.reader-stats{color:#687184;font-size:14px}
.reader-content{padding:28px 22px 34px}
.reading-block{max-width:760px;margin:0 auto 22px;padding-bottom:22px;border-bottom:1px solid #eef0f3}
.paragraph-index{margin-bottom:8px;color:#8a93a3;font-size:12px;font-weight:700}
.paragraph-text{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Helvetica Neue","Segoe UI",sans-serif;font-size:20px;font-weight:450;letter-spacing:-.01em;line-height:1.8;color:#1f2734}
.translation-row{display:flex;justify-content:flex-end;margin-top:12px}
.translate-paragraph-button{padding:8px 11px;background:#edf0f4;color:#2b3443;font-size:13px}
.translation-panel{margin-top:12px;padding:14px 16px;border-radius:12px;background:#f7f8fa;color:#3a4352;line-height:1.9;font-family:"B Yekan","B Nazanin","B Koodak",Tahoma,sans-serif;font-size:17px;font-weight:400;direction:rtl;text-align:right}
.translation-error{color:#7b4a4a;background:#fbf3f3}
.word-token{cursor:pointer;border-radius:4px;transition:background 120ms ease}
.word-token:hover{background:#eef2f7}
.word-token.saved{background:#fff0a6}
.word-popover{position:fixed;z-index:20;width:min(360px,calc(100vw - 24px));padding:16px;border:1px solid #dfe3ea;border-radius:14px;background:#fff;box-shadow:0 18px 50px rgba(31,41,55,.16)}
.word-popover-header{display:flex;align-items:center;justify-content:space-between;gap:10px}
.word-popover strong{font-size:20px}
.icon-button{padding:2px 8px;background:transparent;color:#687184;font-size:24px;line-height:1}
.dictionary-state{margin-top:12px;color:#687184;font-size:13px}
.dictionary-result{margin-top:12px}
.word-phonetic{margin-bottom:8px;color:#687184;font-family:Inter,-apple-system,BlinkMacSystemFont,"Helvetica Neue","Segoe UI",sans-serif}
.word-definition{line-height:1.55}
.word-example{margin-top:8px;padding-left:10px;border-left:2px solid #e4e8ee;color:#687184;font-family:Inter,-apple-system,BlinkMacSystemFont,"Helvetica Neue","Segoe UI",sans-serif;font-style:italic;line-height:1.5}
.word-translation{margin-top:10px;padding:10px 12px;border-radius:10px;background:#f7f8fa;direction:rtl;text-align:right;line-height:1.9;font-family:"B Yekan","B Nazanin","B Koodak",Tahoma,sans-serif;font-size:16px}
.popover-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.audio-button{padding:8px 11px;background:#edf0f4;color:#2b3443;font-size:13px}
.hidden{display:none}
.status{min-height:24px;margin:14px 4px 0;color:#687184;font-size:14px}

/* vocabulary */
.study-card{margin-top:0;background:#f9fafb;border:1px solid #d7dce5;border-radius:18px;box-shadow:0 10px 28px rgba(31,41,55,.06);overflow:hidden}
.study-card.app-view{min-height:620px}
.study-toolbar{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:28px 26px;border-bottom:1px solid #e6e9ee}
.study-overview{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;padding:24px 22px 14px}
.study-stat{min-height:98px;display:flex;flex-direction:column;justify-content:center;padding:16px;border:1px solid #e6e9ee;border-radius:14px;background:#fff}
.study-stat strong{display:block;margin-bottom:4px;font-size:28px;font-variant-numeric:tabular-nums}
.study-stat span{color:#687184;font-size:13px}
.review-dashboard{margin:0 22px 20px;padding:18px;border:1px solid #e1e5eb;border-radius:16px;background:#fff}
.review-dashboard-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.review-dashboard-head h3{margin:6px 0 0;font-size:17px}
.review-dashboard-label{color:#9aa2af;font-size:10px;font-weight:800;letter-spacing:.12em}
.review-dashboard-summary{color:#687184;font-size:13px;white-space:nowrap}
.review-progress{margin-top:18px}
.review-progress-track{height:9px;overflow:hidden;border-radius:999px;background:#edf0f4}
.review-progress-track span{display:block;width:0;height:100%;border-radius:inherit;background:#202938;transition:width 180ms ease}
.review-progress-meta{display:flex;justify-content:space-between;gap:12px;margin-top:8px;color:#8a93a3;font-size:12px}
.study-panel{padding:0 22px 24px}
.word-list-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px}
.word-list-toolbar h3{margin:0 0 4px}
.word-list-caption{margin:0;color:#8a93a3;font-size:13px}
.word-list-actions{display:flex;align-items:center;gap:8px}
.word-sort,.word-filter,.manual-add input{padding:10px 12px;border:1px solid #d7dce5;border-radius:10px;background:#fff;color:#2b3443;outline:none}
.word-sort:focus,.manual-add input:focus,.word-filter:focus{border-color:#98a2b3}
.word-list-actions .word-filter{width:min(280px,60vw)}
.word-table-wrap{margin-top:14px;overflow-x:auto;border:1px solid #e6e9ee;border-radius:14px}
.word-table{width:100%;border-collapse:collapse;min-width:820px;background:#fff}
.word-table th{padding:12px 14px;background:#f7f8fa;border-bottom:1px solid #e6e9ee;color:#687184;font-size:11px;font-weight:750;letter-spacing:.06em;text-align:left;text-transform:uppercase;white-space:nowrap}
.word-table td{padding:14px;border-bottom:1px solid #eef0f3;vertical-align:middle}
.word-table tbody tr:last-child td{border-bottom:0}
.word-table tbody tr:hover{background:#fbfcfd}
.word-table-word{font-family:Inter,-apple-system,BlinkMacSystemFont,"Helvetica Neue","Segoe UI",sans-serif;font-size:17px;font-weight:550;white-space:nowrap}
.word-table-meaning{min-width:190px;direction:rtl;text-align:right;line-height:1.7}
.word-table-date,.word-table-source,.word-table-status{color:#687184;font-size:13px;white-space:nowrap}
.word-table-source{max-width:180px;overflow:hidden;text-overflow:ellipsis}
.word-table-action{min-width:100px;text-align:right}
.remove-word-button{display:inline-flex;align-items:center;justify-content:center;min-height:38px;min-width:82px;border:1px solid #ead7d7!important;border-radius:9px;background:#fff8f8!important;color:#7b4a4a!important;padding:7px 10px!important;font-size:12px;font-weight:700}
.manual-add{display:flex;gap:9px;margin-top:16px;padding:10px;border:1px solid #e6e9ee;border-radius:12px;background:#fbfcfd;align-items:center}
.manual-add-label{flex:0 0 auto;padding:0 3px;color:#8a93a3;font-size:10px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.manual-add input{flex:1;min-width:0;min-height:40px}
.manual-add button{min-height:40px;padding:9px 14px}

/* details */
body.modal-open{overflow:hidden}
.vocabulary-detail{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:20px}
.vocabulary-detail.hidden{display:none}
.vocabulary-detail-backdrop{position:absolute;inset:0;background:rgba(18,24,34,.42);backdrop-filter:blur(3px)}
.vocabulary-detail-card{position:relative;width:min(620px,100%);max-height:min(760px,calc(100vh - 40px));overflow:auto;padding:26px;border:1px solid #dfe3ea;border-radius:20px;background:#fff;box-shadow:0 24px 70px rgba(20,28,40,.22)}
.detail-header{display:flex;justify-content:space-between;gap:18px;margin-bottom:22px}
.detail-header h2{margin:0 0 5px;font-size:32px;font-family:Inter,-apple-system,BlinkMacSystemFont,"Helvetica Neue","Segoe UI",sans-serif}
.detail-phonetic{margin:0;color:#8a93a3;font-family:Inter,-apple-system,BlinkMacSystemFont,"Helvetica Neue","Segoe UI",sans-serif}
.detail-meaning{margin-bottom:20px;padding:15px 16px;border-radius:12px;background:#f7f8fa;direction:rtl;text-align:right;font-family:"B Yekan","B Nazanin","B Koodak",Tahoma,sans-serif;font-size:18px;line-height:1.9}
.detail-section{padding:15px 0;border-top:1px solid #eef0f3}
.detail-section span,.detail-meta-grid span{display:block;margin-bottom:6px;color:#8a93a3;font-size:11px;font-weight:750;letter-spacing:.06em;text-transform:uppercase}
.detail-section p{margin:0;color:#3a4352;line-height:1.7}
.detail-meta-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:8px}
.detail-meta-grid>div{padding:13px;border:1px solid #e6e9ee;border-radius:12px;background:#fbfcfd}
.detail-meta-grid strong{display:block;color:#2b3443;font-size:13px;font-weight:600;line-height:1.45;word-break:break-word}
.detail-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.danger-button{padding:11px 16px;border-radius:10px;background:#fbf3f3;color:#7b4a4a;font-weight:650}
.word-table-row{cursor:pointer}

/* review */
.review-app{min-height:600px;margin-top:0;padding:28px;border:1px solid #d7dce5;border-radius:20px;background:#f9fafb;box-shadow:0 10px 28px rgba(31,41,55,.06)}
.review-toolbar{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding-bottom:22px;border-bottom:1px solid #e3e7ed}
.review-subtitle{margin:0;color:#687184}
.review-games{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;max-width:760px;margin-top:22px}
.review-game{min-height:124px;display:flex;align-items:center;gap:15px;padding:20px;border:1px solid #dfe4eb;border-radius:16px;background:#fff;text-align:left}
.review-game:hover{background:#f6f8fa;border-color:#cfd6e0}
.review-game-icon{width:48px;height:48px;display:grid;place-items:center;border:1px solid #e1e5eb;border-radius:12px;background:#f5f6f8;font-size:22px}
.review-game strong{display:block;margin-bottom:4px;font-size:16px}
.review-game small{display:block;color:#8a93a3;line-height:1.45}
.review-setup{margin-top:18px;max-width:960px;padding:22px;border:1px solid #dfe4eb;border-radius:16px;background:#fff}
.review-setup-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.review-setup-label{color:#9aa2af;font-size:10px;font-weight:800;letter-spacing:.12em}
.review-setup-header h3{margin:7px 0 0}
.review-options{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin-top:18px}
.review-option{position:relative;min-height:88px;padding:13px;border:1px solid #dfe4eb;border-radius:13px;background:#fbfcfd;text-align:left;cursor:pointer}
.review-option:hover{background:#f6f8fa}
.review-option.active{border-color:#202938;box-shadow:0 0 0 2px #202938 inset;background:#fff}
.review-option.active::after{content:"✓";position:absolute;right:13px;top:13px;font-size:13px;font-weight:800}
.review-option strong{display:block;margin-bottom:4px;font-size:13px;padding-right:18px}
.review-option span{display:block;color:#8a93a3;font-size:11px;line-height:1.45}
.review-selection-tools{margin-top:14px}
.review-custom-list{margin-top:12px;padding:12px;border:1px solid #e3e7ed;border-radius:13px;background:#fbfcfd;max-height:300px;overflow:auto}
.review-custom-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.review-custom-item{display:flex;align-items:center;gap:8px;padding:9px 10px;border:1px solid #e3e7ed;border-radius:9px;background:#fff;color:#2b3443;font-size:13px}
.review-custom-item input{accent-color:#202938}
.review-setup-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid #eef0f3}
#review-selection-count{color:#687184;font-size:13px}
.review-play-area{max-width:1000px;margin-top:18px}
.review-play-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid #eef0f3}
.review-play-label{color:#687184;font-size:12px;font-weight:650}
.review-game-panel{border-top:1px solid #e3e7ed;padding-top:10px}

/* flashcards */
.flashcard-stage{min-height:420px;display:grid;place-items:center;padding:26px 0 18px}
.flashcard{position:relative;width:min(700px,100%);min-height:360px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:48px;border:1px solid #d8dee7;border-radius:24px;background:#fbfcfd;color:#202938;box-shadow:0 20px 55px rgba(31,41,55,.1);text-align:center;transition:transform 160ms ease,box-shadow 160ms ease}
.flashcard:hover{background:#f6f8fa;transform:translateY(-2px)}
.flashcard-side-label{padding:6px 9px;border:1px solid #e1e5eb;border-radius:999px;background:#fff;color:#8a93a3;font-size:10px;letter-spacing:.16em}
.flashcard-front{font-family:Inter,-apple-system,BlinkMacSystemFont,"Helvetica Neue","Segoe UI",sans-serif;font-size:clamp(40px,6vw,64px);font-weight:560;line-height:1.15}
.flashcard-back{width:min(570px,100%);color:#2f3745;font-family:"B Yekan","B Nazanin","B Koodak",Tahoma,sans-serif;font-size:18px;line-height:1.9;direction:rtl;text-align:center;white-space:pre-line}
.flashcard-controls{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;padding:0 0 28px}
.flashcard-progress-wrap{min-width:128px;display:flex;flex-direction:column;gap:4px}
.flashcard-progress-label{color:#9aa2af;font-size:10px;font-weight:750;letter-spacing:.12em}
.flashcard-progress{color:#2b3443;font-size:14px;font-weight:650;font-variant-numeric:tabular-nums}
.flashcard-buttons{display:grid;grid-template-columns:repeat(4,minmax(100px,1fr));gap:10px;flex:1 1 auto;flex-wrap:wrap}
.review-button{min-height:58px;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:3px;padding:10px 13px;border:1px solid #dfe4eb;border-radius:13px;background:#fff;color:#2b3443;text-align:left}
.review-button-title{font-size:14px;font-weight:750}
.review-button-meta{color:#8a93a3;font-size:11px}
.review-easy{background:#202938;color:#fff;border-color:#202938}
.review-easy .review-button-meta{color:#dfe4eb}

/* matching */
.matching-header{display:flex;align-items:center;justify-content:space-between;gap:16px}
.matching-header h3{margin:0 0 4px}.matching-header p{margin:0;color:#687184}
.matching-score-box{min-width:86px;padding:9px 11px;border:1px solid #e1e5eb;border-radius:12px;background:#fff;text-align:center}
.matching-score-label{display:block;margin-bottom:2px;color:#9aa2af;font-size:9px;font-weight:800;letter-spacing:.12em}
.matching-score{display:block;color:#202938;font-size:15px;font-weight:700;font-variant-numeric:tabular-nums}
.matching-board-area{margin-top:18px;padding:16px;border:1px solid #e3e7ed;border-radius:18px;background:#fff}
.matching-column-labels{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px;padding:0 4px}
.matching-column-labels span{color:#9aa2af;font-size:10px;font-weight:800;letter-spacing:.12em}
.matching-column-labels span:last-child{text-align:right}
.matching-board{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.matching-card{min-height:72px;padding:13px 15px;border:1px solid #dfe4eb;border-radius:13px;background:#fbfcfd;color:#2b3443;text-align:left}
.matching-card.selected{outline:2px solid #202938;outline-offset:1px;background:#f4f6f8}
.matching-card.matched{border-color:#b8c1cd;background:#f1f3f6;opacity:.52}
.matching-card .match-kind{display:block;color:#a0a7b2;font-size:9px;font-weight:800;letter-spacing:.12em}
.matching-card .match-text{display:block;margin-top:5px;font-size:16px;line-height:1.5}
.matching-card[data-kind="FA"] .match-text{direction:rtl;text-align:right;font-family:"B Yekan","B Nazanin","B Koodak",Tahoma,sans-serif}
.matching-feedback{margin:12px 4px 10px;min-height:22px;color:#687184;font-size:13px}

/* dedicated view */
body.vocab-mode .app-shell{width:min(1120px,calc(100% - 32px))}
body.vocab-mode .app-header{margin-bottom:20px}
body.vocab-mode #open-vocabulary,body.review-mode #open-vocabulary{display:none}

/* responsive */
@media(max-width:900px){.study-overview{grid-template-columns:repeat(3,minmax(0,1fr))}.review-options{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){.app-header,.section-heading,.reader-toolbar,.study-toolbar,.review-toolbar,.matching-header{align-items:flex-start;flex-direction:column}.review-games{grid-template-columns:1fr}.review-custom-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.flashcard-controls{align-items:stretch;flex-direction:column}.flashcard-buttons{width:100%;grid-template-columns:repeat(2,minmax(0,1fr))}.matching-board{grid-template-columns:1fr}}
@media(max-width:680px){.app-shell,body.vocab-mode .app-shell{width:min(100% - 20px,1120px);padding-top:24px}.study-overview{grid-template-columns:1fr 1fr}.review-options{grid-template-columns:1fr 1fr}.word-list-actions{width:100%;flex-direction:column;align-items:stretch}.word-list-actions .word-filter,.word-sort{width:100%}.manual-add{flex-wrap:wrap}.manual-add-label{width:100%}.manual-add input{flex:1 1 0}.manual-add button{width:100%}.review-custom-grid{grid-template-columns:1fr}.review-setup-footer,.review-play-header{flex-direction:column;align-items:stretch}.review-app{padding:18px 12px}.vocabulary-detail-card{padding:20px}.detail-meta-grid{grid-template-columns:1fr}}
@media(max-width:420px){.study-overview{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.flashcard{transition:none}}
:lang(fa){font-family:"B Yekan","B Nazanin","B Koodak",Tahoma,sans-serif}