:root{--bg: var(--tg-theme-bg-color, #ffffff);--bg2: var(--tg-theme-secondary-bg-color, #f3f4f6);--text: var(--tg-theme-text-color, #16181d);--hint: var(--tg-theme-hint-color, #6b7280);--accent: var(--tg-theme-button-color, #2f6f5e);--accent-text: var(--tg-theme-button-text-color, #ffffff);--link: var(--tg-theme-link-color, #2f6f5e);--border: color-mix(in srgb, var(--hint) 28%, transparent);--ok: #2e7d4f;--ok-bg: color-mix(in srgb, #2e7d4f 12%, transparent);--bad: #b3402e;--bad-bg: color-mix(in srgb, #b3402e 12%, transparent);--warn: #9a6a12;--warn-bg: color-mix(in srgb, #c28a1a 12%, transparent);--radius: 12px;--font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans Arabic", sans-serif;--font-read: "Literata", "PT Serif", Georgia, serif;--font-ar: "Amiri", "Noto Naskh Arabic", "Traditional Arabic", serif}@media (prefers-color-scheme: dark){:root:not([data-tg]){--bg: #17191d;--bg2: #22252b;--text: #eceef1;--hint: #9aa1ab}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:var(--font-ui);font-size:15px;line-height:1.45;-webkit-font-smoothing:antialiased}h1{font-size:22px;line-height:1.25;margin:4px 0 12px}h2{font-size:17px;margin:20px 0 8px}h3{font-size:15px;margin:0 0 8px}p{margin:0 0 8px}p,li,h1,h2,h3,.block-row-title,.link,.row>span{unicode-bidi:plaintext}.course-section-head>span,.row>span.muted{white-space:nowrap}.muted{color:var(--hint)}.small{font-size:13px}.center{text-align:center}.app{display:flex;flex-direction:column;height:var(--tg-viewport-stable-height, 100vh);max-width:560px;margin:0 auto}.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--border)}.lang-switch{border:1px solid var(--border);background:transparent;color:var(--text);border-radius:8px;padding:4px 10px;font-size:14px;font-family:var(--font-ui)}.content{flex:1;overflow-y:auto;padding:12px 16px 24px}.screen{padding-bottom:72px}.card{background:var(--bg2);border-radius:var(--radius);padding:14px 16px;margin:12px 0}.card-warn{background:var(--warn-bg)}.card-accent{border:1px solid var(--accent);background:transparent}.card-error{background:var(--bad-bg)}.row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:6px 0}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border-radius:10px;border:1px solid var(--border);background:transparent;color:var(--text);font:500 15px var(--font-ui);cursor:pointer;transition:opacity .15s}.btn:disabled{opacity:.45;cursor:default}.btn-primary{background:var(--accent);color:var(--accent-text);border-color:var(--accent)}.btn-ghost{border-color:transparent;color:var(--link);padding-inline:4px;min-height:36px}.btn-small{min-height:36px;padding:6px 12px;font-size:14px;flex-shrink:0}.btn-block{width:100%}.link{background:none;border:none;padding:4px 0;color:var(--link);font:inherit;text-align:start;cursor:pointer}.back-link{background:none;border:none;color:var(--link);font:15px var(--font-ui);padding:4px 0 8px;cursor:pointer}.main-action{position:sticky;bottom:0;padding:12px 0 calc(12px + env(safe-area-inset-bottom));background:linear-gradient(to top,var(--bg) 70%,transparent)}.plain-list{list-style:none;padding:0;margin:4px 0 12px}.plain-list li{padding:4px 0}.status{display:inline-flex;align-items:center;gap:4px;font-size:13px;white-space:nowrap}.status-icon{min-width:1.2em;text-align:center;font-weight:700}.status-locked,.status-not_started{color:var(--hint)}.status-in_progress{color:var(--link)}.status-needs_repeat{color:var(--warn)}.status-passed{color:var(--accent)}.status-mastered{color:var(--ok)}.progress-bar{position:relative;height:8px;border-radius:4px;background:var(--border);overflow:hidden;margin:8px 0 6px}.progress-bar>div{position:absolute;inset-block:0;inset-inline-start:0;border-radius:4px;transition:width .3s}.progress-bar-passed{background:color-mix(in srgb,var(--accent) 40%,transparent)}.progress-bar-mastered{background:var(--accent)}.badge{display:inline-block;min-width:18px;margin-inline-start:4px;padding:0 5px;border-radius:9px;background:var(--accent);color:var(--accent-text);font-size:11px;line-height:18px}.hero h1{font-size:24px;margin-bottom:4px}.mini-map{margin:16px 0}.mini-map-row{display:flex;flex-wrap:wrap;gap:8px}.mini-map-cell{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:52px;padding:8px 6px;border:1px solid var(--border);border-radius:10px;background:transparent;color:var(--text);cursor:pointer}.mini-map-cell:disabled{opacity:.55;cursor:default}.mini-map-current{border-color:var(--accent)}.course-section{margin-bottom:16px}.course-section-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px}.block-list{list-style:none;margin:0;padding:0}.block-row{display:flex;align-items:center;gap:10px;width:100%;min-height:48px;padding:10px 12px;margin:4px 0;border:none;border-radius:10px;background:var(--bg2);color:var(--text);font:15px var(--font-ui);text-align:start;cursor:pointer}.block-row:disabled{cursor:default}.block-row-locked{opacity:.55}.block-row-test{background:transparent;border:1px dashed var(--border)}.block-row-code{min-width:30px;color:var(--hint);font-size:13px;font-variant-numeric:tabular-nums}.block-row-title{flex:1}.block-title{font-size:21px}.reading-controls{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;margin:8px 0 16px}.chips,.font-controls{display:flex;gap:6px}.chip{padding:6px 12px;min-height:34px;border-radius:17px;border:1px solid var(--border);background:transparent;color:var(--hint);font:13px var(--font-ui);cursor:pointer}.chip-on{color:var(--text);border-color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,transparent)}.reading{--font-scale: 1}.segment{margin-bottom:20px}.segment p{white-space:pre-line}.segment-ar{font-family:var(--font-ar);font-size:calc(26px * var(--font-scale));line-height:2;text-align:right}.segment-ru{font-family:var(--font-read);font-size:calc(17.5px * var(--font-scale));line-height:1.65}.segment-tafsir{font-family:var(--font-read);font-size:calc(16px * var(--font-scale));line-height:1.6;padding:12px 14px;border-inline-start:3px solid var(--border);background:var(--bg2);border-radius:0 var(--radius) var(--radius) 0}.segment-label{font-family:var(--font-ui);font-size:13px;color:var(--hint);font-weight:600}.key-points h3{margin-top:8px}.key-points ul{padding-inline-start:20px;margin:0}.key-points li{padding:4px 6px;border-radius:6px;margin-bottom:2px}.kp-highlight{background:var(--warn-bg);outline:1px solid color-mix(in srgb,var(--warn) 40%,transparent)}.read-sentinel{height:1px}.question-progress{margin:4px 0 16px}.thin-bar{height:3px;border-radius:2px;background:var(--border);overflow:hidden;margin-top:6px}.thin-bar>div{height:100%;background:var(--accent);transition:width .2s}.prompt{font-size:17px;line-height:1.5;margin-bottom:14px;unicode-bidi:plaintext}.prompt-label{margin-bottom:6px}.prompt-ar,.text-ar{font-family:var(--font-ar);font-size:1.3em;line-height:1.9}.prompt-ar{font-size:24px;text-align:right}.options{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.options-inline{flex-direction:row;flex-wrap:wrap}.options-inline .option{width:auto;flex:1 1 40%;justify-content:center}.option{display:flex;align-items:center;gap:8px;width:100%;min-height:48px;padding:10px 14px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);font:15px var(--font-ui);text-align:start;cursor:pointer}.option:disabled{cursor:default}.option-selected{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,transparent)}.option-correct{border-color:var(--ok);background:var(--ok-bg)}.option-wrong{border-color:var(--bad);background:var(--bad-bg)}.checkbox{color:var(--accent)}.sequence-picked ol{margin:4px 0 12px;padding-inline-start:24px}.sequence-picked li{margin-bottom:6px}.feedback{margin-top:8px}.feedback-ok{background:var(--ok-bg)}.feedback-bad{background:var(--bad-bg)}.result-head{text-align:center;padding:16px 0 8px}.result-score{font-size:15px;color:var(--hint);font-variant-numeric:tabular-nums}.result-ok h1{color:var(--ok)}.result-bad h1{color:var(--bad)}.mistake .prompt{font-size:15px}.mistake-yours{color:var(--bad)}.mistake-correct{color:var(--ok)}.result-actions{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:8px}.stat{background:var(--bg2);border-radius:var(--radius);padding:12px 14px}.stat-value{font-size:26px;font-weight:600;font-variant-numeric:tabular-nums}.section-progress{margin-bottom:10px}.tabbar{display:flex;border-top:1px solid var(--border);background:var(--bg);padding-bottom:env(safe-area-inset-bottom)}.tabbar button{flex:1;min-height:52px;padding:8px 4px;background:none;border:none;color:var(--hint);font:12px var(--font-ui);cursor:pointer}.tabbar button.active{color:var(--accent);font-weight:600}.book-switch{display:inline-flex;align-items:center;gap:6px;max-width:70%;padding:4px 0;background:none;border:none;color:var(--text);font:15px var(--font-ui);cursor:pointer}.book-switch strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.book-switch-caret{color:var(--hint);font-size:12px}.book-card{display:flex;flex-direction:column;align-items:stretch;gap:2px;width:100%;margin:10px 0;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg2);color:var(--text);font:15px var(--font-ui);text-align:start;cursor:pointer}.book-card-current{border-color:var(--accent)}.book-card-title{font-size:17px;font-weight:600}.book-card-badge{color:var(--accent)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:16px;background:color-mix(in srgb,#000 45%,transparent)}.modal{width:100%;max-width:360px;padding:18px 16px 14px;border-radius:var(--radius);background:var(--bg);color:var(--text)}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:12px}