/* ═══════════════════════════════════════════════════════════════════════════
   VIZ — مكتبة المرئيات والمختبرات التفاعلية
   بذرة المكتبة المشتركة: تُنسخ كما هي إلى بقية الكتب.
   لا تعتمد على أي شيء خارجي، وتقرأ متغيرات ثيم الكتاب المضيف.
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────
   1. المختبر التفاعلي (Lab)
   ───────────────────────────────────────────────────────────── */
.lab {
    margin: 1.75rem 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.lab__head {
    display: flex;
    align-items: center;
    gap: .55rem;
    padding: .65rem 1rem;
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
    font-size: .88rem;
    font-weight: 700;
    color: var(--color-text-secondary);
}

.lab__head i {
    color: var(--color-primary);
}

.lab__body {
    display: grid;
    grid-template-columns: 1fr 250px;
}

.lab__stage {
    padding: 1.5rem;
    min-height: 190px;
    display: grid;
    place-items: center;
    overflow: auto;
    background:
        linear-gradient(45deg, rgba(148, 163, 184, .07) 25%, transparent 25%, transparent 75%, rgba(148, 163, 184, .07) 75%),
        linear-gradient(45deg, rgba(148, 163, 184, .07) 25%, transparent 25%, transparent 75%, rgba(148, 163, 184, .07) 75%);
    background-size: 18px 18px;
    background-position: 0 0, 9px 9px;
}

.lab__stage>* {
    max-width: 100%;
}

.lab__controls {
    border-inline-start: 1px solid var(--color-border);
    background: var(--color-bg-tertiary);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: .85rem;
    align-content: start;
}

.ctl {
    display: flex;
    flex-direction: column;
    gap: .3rem;
}

.ctl__label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: .5rem;
    font-size: .78rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.ctl__value {
    font-family: var(--font-mono);
    font-size: .74rem;
    color: var(--color-primary);
    direction: ltr;
}

.ctl input[type="range"] {
    width: 100%;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.ctl select,
.ctl input[type="text"] {
    width: 100%;
    padding: .35rem .5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: .78rem;
    direction: ltr;
}

.ctl input[type="color"] {
    width: 100%;
    height: 30px;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: none;
    cursor: pointer;
}

.lab__code {
    position: relative;
    margin: 0;
    padding: .85rem 1rem;
    border-top: 1px solid var(--color-border);
    background: #0d1117;
    color: #c9d1d9;
    font-family: var(--font-mono);
    font-size: .8rem;
    line-height: 1.8;
    direction: ltr;
    text-align: left;
    overflow-x: auto;
    white-space: pre;
}

.lab__code .k {
    color: #7ee787;
}

.lab__code .v {
    color: #79c0ff;
}

.lab__code .s {
    color: #ffa657;
}

.lab__copy {
    position: absolute;
    top: .5rem;
    right: .5rem;
    background: rgba(255, 255, 255, .08);
    color: #c9d1d9;
    border: none;
    border-radius: var(--radius-sm);
    padding: .25rem .6rem;
    font-family: var(--font-sans);
    font-size: .72rem;
    cursor: pointer;
    transition: background .2s;
}

.lab__copy:hover {
    background: rgba(255, 255, 255, .18);
}

@media (max-width: 760px) {
    .lab__body {
        grid-template-columns: 1fr;
    }

    .lab__controls {
        border-inline-start: none;
        border-top: 1px solid var(--color-border);
    }
}

/* ─────────────────────────────────────────────────────────────
   2. مختبر المحدِّدات
   ───────────────────────────────────────────────────────────── */
.sl__input-row {
    display: flex;
    gap: .5rem;
    padding: .75rem 1rem;
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.sl__input {
    flex: 1;
    padding: .5rem .7rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: .9rem;
    direction: ltr;
    text-align: left;
}

.sl__count {
    font-size: .8rem;
    font-weight: 700;
    padding: .5rem .7rem;
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    white-space: nowrap;
    min-width: 92px;
    text-align: center;
}

.sl__count.hit {
    color: var(--color-success);
    border-color: var(--color-success);
}

.sl__count.miss {
    color: var(--color-text-muted);
}

.sl__count.err {
    color: var(--color-error);
    border-color: var(--color-error);
}

.sl__markup {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: .55rem;
}

.sl__markup * {
    transition: outline-color .2s, background .2s;
}

.sl-hit {
    outline: 2px solid var(--color-primary) !important;
    outline-offset: 2px;
    background: rgba(127, 127, 127, .12) !important;
    background: color-mix(in srgb, var(--color-primary) 12%, transparent) !important;
    border-radius: 4px;
}

.sl__chips {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    padding: 0 1rem 1rem;
}

.sl__chip {
    font-family: var(--font-mono);
    font-size: .74rem;
    padding: .25rem .6rem;
    border-radius: 99px;
    border: 1px solid var(--color-border);
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    cursor: pointer;
    direction: ltr;
    transition: all .15s;
}

.sl__chip:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* عناصر العينة داخل مختبر المحدِّدات */
.demo-node {
    padding: .5rem .75rem;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-sm);
    font-size: .88rem;
    background: var(--color-bg-secondary);
}

/* ─────────────────────────────────────────────────────────────
   3. مقياس الأولوية (Specificity)
   ───────────────────────────────────────────────────────────── */
.spec {
    margin: 1.75rem 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-bg-secondary);
}

.spec__row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: .75rem;
    align-items: center;
    padding: .8rem 1rem;
    border-bottom: 1px solid var(--color-border);
}

.spec__row:last-of-type {
    border-bottom: none;
}

.spec__score {
    display: flex;
    gap: .3rem;
}

.spec__digit {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: .9rem;
    color: #fff;
}

.spec__digit--id {
    background: #ef4444;
}

.spec__digit--class {
    background: #f59e0b;
}

.spec__digit--el {
    background: #06b6d4;
}

.spec__verdict {
    padding: .75rem 1rem;
    background: var(--color-bg-tertiary);
    font-size: .88rem;
    font-weight: 700;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.spec__verdict .win {
    color: var(--color-success);
    font-family: var(--font-mono);
    direction: ltr;
    display: inline-block;
}

/* ─────────────────────────────────────────────────────────────
   4. المُصحِّح — تحقق من إجابة التحدي
   ───────────────────────────────────────────────────────────── */
.check {
    margin: 1.25rem 0 2rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-tertiary);
    overflow: hidden;
}

.check__bar {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .8rem 1rem;
}

.check__btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .55rem 1.1rem;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--color-primary);
    color: #fff;
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: .88rem;
    cursor: pointer;
    transition: background .2s, transform .1s;
}

.check__btn:hover {
    background: var(--color-primary-hover);
}

.check__btn:active {
    transform: scale(.97);
}

.check__hint {
    font-size: .8rem;
    color: var(--color-text-muted);
}

.check__list {
    display: none;
    flex-direction: column;
    gap: .5rem;
    padding: 0 1rem 1rem;
}

.check__list.visible {
    display: flex;
}

.check__item {
    display: flex;
    align-items: flex-start;
    gap: .6rem;
    padding: .6rem .8rem;
    border-radius: var(--radius-sm);
    font-size: .86rem;
    line-height: 1.6;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
}

.check__item i {
    margin-top: .25rem;
    flex-shrink: 0;
}

.check__item.pass {
    border-color: rgba(16, 185, 129, .45);
}

.check__item.pass i {
    color: var(--color-success);
}

.check__item.fail {
    border-color: rgba(239, 68, 68, .45);
}

.check__item.fail i {
    color: var(--color-error);
}

.check__item code {
    font-family: var(--font-mono);
    direction: ltr;
    display: inline-block;
    font-size: .8rem;
}

.check__done {
    display: none;
    align-items: center;
    gap: .6rem;
    margin: 0 1rem 1rem;
    padding: .8rem 1rem;
    border-radius: var(--radius-sm);
    background: rgba(16, 185, 129, .12);
    border: 1px solid rgba(16, 185, 129, .4);
    color: var(--color-success);
    font-weight: 700;
    font-size: .9rem;
}

.check__done.visible {
    display: flex;
}

/* ─────────────────────────────────────────────────────────────
   5. مرئيات ثابتة (بدائل الصور)
   ───────────────────────────────────────────────────────────── */
.viz {
    margin: 1.75rem 0;
}

.viz__cap {
    margin-top: .6rem;
    text-align: center;
    font-size: .82rem;
    color: var(--color-text-muted);
}

/* مقارنة عمودين */
.viz-compare {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 1.5rem 0;
}

.viz-compare__side {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    background: var(--color-bg-secondary);
    /* عنصر الشبكة عرضه الأدنى auto افتراضًا، فيتمدّد بأطول سطر كود بداخله
       ويقتطع نفسه خارج الشاشة على الجوال. الصفر يعيده إلى عرض العمود. */
    min-width: 0;
}

.viz-compare__side h4 {
    margin: 0 0 .6rem;
    font-size: .95rem;
    display: flex;
    align-items: center;
    gap: .45rem;
}

.viz-compare__side--bad {
    border-color: rgba(239, 68, 68, .4);
}

.viz-compare__side--bad h4 {
    color: var(--color-error);
}

.viz-compare__side--good {
    border-color: rgba(16, 185, 129, .4);
}

.viz-compare__side--good h4 {
    color: var(--color-success);
}

/* كتلة كود داخل عمود نصف العرض: حشوة أضيق كي يتّسع السطر بلا اقتطاع */
.viz-compare pre {
    padding-inline: .75rem;
}

@media (max-width: 620px) {
    .viz-compare {
        grid-template-columns: 1fr;
    }
}

/* بطاقات مفاهيم */
.viz-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: .85rem;
    margin: 1.5rem 0;
}

.viz-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: .95rem;
    background: var(--color-bg-secondary);
}

.viz-card__ico {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-sm);
    background: var(--color-bg-tertiary);
    color: var(--color-primary);
    margin-bottom: .55rem;
}

.viz-card h4 {
    margin: 0 0 .3rem;
    font-size: .92rem;
}

.viz-card p {
    margin: 0;
    font-size: .84rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
}

.viz-card code {
    font-family: var(--font-mono);
    font-size: .78rem;
    direction: ltr;
    display: inline-block;
}

/* تشريح عنصر: قطعة كود بأسهم لأجزائها */
.viz-anatomy {
    margin: 1.5rem 0;
    padding: 1.25rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    text-align: center;
}

.viz-anatomy__code {
    font-family: var(--font-mono);
    font-size: 1.15rem;
    direction: ltr;
    display: inline-block;
    line-height: 2.2;
    white-space: nowrap;
    max-width: 100%;
    overflow-x: auto;
}

.viz-anatomy__part {
    position: relative;
    padding: .15rem .3rem;
    border-radius: 4px;
    cursor: default;
}

.viz-anatomy__part[data-tag]::after {
    content: attr(data-tag);
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: .35rem;
    font-family: var(--font-sans);
    font-size: .68rem;
    white-space: nowrap;
    color: var(--color-text-muted);
}

.viz-anatomy__part--sel {
    background: rgba(6, 182, 212, .18);
    color: #0891b2;
}

.viz-anatomy__part--prop {
    background: rgba(236, 72, 153, .16);
    color: var(--color-primary);
}

.viz-anatomy__part--val {
    background: rgba(139, 92, 246, .16);
    color: #7c3aed;
}

.viz-anatomy__legend {
    margin-top: 2.2rem;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: .8rem;
    color: var(--color-text-secondary);
}

/* خطوات مرقّمة */
.viz-steps {
    counter-reset: vstep;
    display: flex;
    flex-direction: column;
    gap: .7rem;
    margin: 1.5rem 0;
}

.viz-step {
    position: relative;
    padding-block: .85rem;
    padding-inline-start: 3.2rem;   /* مكان الرقم — منطقي لا فيزيائي كي لا ينفصل عن موضعه */
    padding-inline-end: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    font-size: .9rem;
}

.viz-step::before {
    counter-increment: vstep;
    content: counter(vstep);
    position: absolute;
    inset-inline-start: .8rem;      /* بداية السطر: يمينًا في العربية — مقابل الفقرة لا في الطرف الآخر */
    inset-inline-end: auto;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-weight: 700;
    font-size: .82rem;
}

/* جدول مرجعي */
.viz-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.25rem 0;
    font-size: .88rem;
    overflow: hidden;
    border-radius: var(--radius-md);
}

.viz-table th,
.viz-table td {
    padding: .65rem .8rem;
    border: 1px solid var(--color-border);
    text-align: right;
    vertical-align: top;
}

.viz-table thead th {
    background: var(--color-bg-tertiary);
    font-size: .84rem;
}

.viz-table code {
    font-family: var(--font-mono);
    font-size: .8rem;
    direction: ltr;
    display: inline-block;
    color: var(--color-primary);
}

.viz-table-wrap {
    overflow-x: auto;
}

/* هدف الدرس */
.goal {
    display: flex;
    align-items: flex-start;
    gap: .7rem;
    margin: 0 0 1.5rem;
    padding: .85rem 1rem;
    border-radius: var(--radius-md);
    background: rgba(127, 127, 127, .07);
    background: color-mix(in srgb, var(--color-primary) 9%, transparent);
    border: 1px solid rgba(127, 127, 127, .25);
    border-color: color-mix(in srgb, var(--color-primary) 28%, transparent);
    font-size: .9rem;
}

.goal i {
    color: var(--color-primary);
    margin-top: .25rem;
}

.goal strong {
    display: block;
    margin-bottom: .15rem;
}

/* تحذير خطأ شائع */
.gotcha {
    display: flex;
    gap: .7rem;
    margin: 1.25rem 0;
    padding: .85rem 1rem;
    border-radius: var(--radius-md);
    background: rgba(245, 158, 11, .1);
    border: 1px solid rgba(245, 158, 11, .35);
    font-size: .88rem;
}

.gotcha i {
    color: #d97706;
    margin-top: .2rem;
    flex: none;
}

/* العنصر المرن عرضه الأدنى auto، فكتلة كود بداخله تمدّده خارج الشاشة.
   الصفر يحصره في عرض الصندوق، والكتلة تمرّر نفسها. */
.gotcha > div,
.goal > div {
    min-width: 0;
}

.gotcha pre,
.goal pre {
    max-width: 100%;
    overflow-x: auto;
}

/* إطار المعاينة المتجاوب */
.frame-lab__bar {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .75rem 1rem;
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.frame-lab__bar input[type="range"] {
    flex: 1;
    accent-color: var(--color-primary);
}

.frame-lab__w {
    font-family: var(--font-mono);
    font-size: .82rem;
    font-weight: 700;
    color: var(--color-primary);
    min-width: 72px;
    text-align: center;
    direction: ltr;
}

.frame-lab__device {
    font-size: .78rem;
    color: var(--color-text-secondary);
    min-width: 72px;
}

.frame-lab__hold {
    padding: 1.25rem;
    display: flex;
    justify-content: center;
    background: var(--color-bg-tertiary);
}

.frame-lab__frame {
    width: 100%;
    height: 320px;
    border: 8px solid #334155;
    border-radius: 14px;
    background: #fff;
    transition: width .15s ease;
}

/* شريط تقدّم الدروس في الفهرس */
.toc-item .toc-done {
    margin-inline-start: auto;
    color: var(--color-success);
    font-size: .8rem;
    opacity: 0;
    transition: opacity .2s;
}

.toc-item .toc-done.on {
    opacity: 1;
}

/* لوحة الإنجاز في صفحة الغلاف */
.landing__progress {
    margin-top: 1rem;
    font-size: .85rem;
    color: var(--color-text-secondary);
}

.landing__progress b {
    color: var(--color-primary);
}

/* ─────────────────────────────────────────────────────────────
   6. بطاقة البرومبت — مطوية، بزر نسخ، ونصّها يُمرَّر داخل صندوقه
   ───────────────────────────────────────────────────────────── */
.prompt {
    margin: 1.25rem 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    overflow: hidden;
    transition: border-color .2s;
}

.prompt:hover {
    border-color: var(--color-primary);
}

.prompt__head {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: .9rem 1rem;
}

.prompt__meta {
    flex: 1;
    min-width: 0;
}

.prompt__badge {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .04em;
    padding: .15rem .55rem;
    border-radius: 99px;
    background: rgba(127, 127, 127, .12);
    background: color-mix(in srgb, var(--color-primary) 14%, transparent);
    color: var(--color-primary);
    margin-bottom: .35rem;
}

.prompt__title {
    margin: 0 0 .2rem;
    font-size: .98rem;
    font-weight: 700;
    line-height: 1.5;
}

.prompt__desc {
    margin: 0;
    font-size: .82rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
}

.prompt__len {
    font-size: .7rem;
    color: var(--color-text-muted);
    margin-inline-start: .4rem;
}

.prompt__actions {
    display: flex;
    flex-direction: column;
    gap: .4rem;
    flex-shrink: 0;
}

.prompt__copy,
.prompt__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    white-space: nowrap;
    padding: .45rem .8rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-bg-tertiary);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: .78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .15s;
}

.prompt__copy {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.prompt__copy:hover {
    background: var(--color-primary-hover);
}

.prompt__copy.done {
    background: var(--color-success);
    border-color: var(--color-success);
}

.prompt__toggle:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.prompt__body {
    display: none;
    margin: 0;
    padding: 1rem 1.1rem;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-tertiary);
    font-family: var(--font-mono);
    font-size: .8rem;
    line-height: 2;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 320px;
    overflow-y: auto;
    overscroll-behavior: contain;
    color: var(--color-text-secondary);
    unicode-bidi: plaintext;
}

.prompt.open .prompt__body {
    display: block;
}

.prompt__body::-webkit-scrollbar {
    width: 8px;
}

.prompt__body::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 99px;
}

@media (max-width: 560px) {
    .prompt__head {
        flex-direction: column;
    }

    .prompt__actions {
        flex-direction: row;
        width: 100%;
    }

    .prompt__copy,
    .prompt__toggle {
        flex: 1;
    }
}

/* ─────────────────────────────────────────────────────────────
   7. المولّدات — حقول ← نتيجة من قوالب الكتاب
   ───────────────────────────────────────────────────────────── */
.gen {
    margin: 1.75rem 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    overflow: hidden;
}

.gen__head {
    display: flex;
    align-items: center;
    gap: .55rem;
    padding: .7rem 1rem;
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
    font-size: .9rem;
    font-weight: 700;
}

.gen__head i {
    color: var(--color-primary);
}

.gen__note {
    padding: .6rem 1rem 0;
    font-size: .78rem;
    color: var(--color-text-muted);
}

.gen__fields {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: .8rem;
    padding: 1rem;
}

.gen__field {
    display: flex;
    flex-direction: column;
    gap: .3rem;
}

.gen__field label {
    font-size: .8rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.gen__field input,
.gen__field select,
.gen__field textarea {
    padding: .55rem .7rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: .88rem;
    resize: vertical;
}

.gen__field input:focus,
.gen__field select:focus,
.gen__field textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.gen__miss {
    border-color: var(--color-error) !important;
    animation: gen-shake .3s;
}

@keyframes gen-shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

.gen__run {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    margin: 0 1rem 1rem;
    padding: .6rem 1.3rem;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--color-primary);
    color: #fff;
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: .88rem;
    cursor: pointer;
    transition: background .2s, transform .1s;
}

.gen__run:hover {
    background: var(--color-primary-hover);
}

.gen__run:active {
    transform: scale(.97);
}

.gen__out {
    display: none;
    padding: 0 1rem 1rem;
}

.gen__out.visible {
    display: block;
}

.gen__result {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-tertiary);
    padding: .9rem 1rem;
    font-size: .88rem;
    line-height: 1.9;
    max-height: 340px;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.gen__result ol,
.gen__result ul {
    margin: 0;
    padding-inline-start: 1.3rem;
}

.gen__result li {
    margin-bottom: .5rem;
}

.gen__result h5 {
    margin: .9rem 0 .4rem;
    font-size: .86rem;
    color: var(--color-primary);
}

.gen__result h5:first-child {
    margin-top: 0;
}

.gen__copy {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    margin-top: .7rem;
    padding: .45rem .9rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: .78rem;
    font-weight: 600;
    cursor: pointer;
}

.gen__copy:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.gen__score {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: .9rem;
}

.gen__score-num {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.gen__bar {
    flex: 1;
    height: 10px;
    border-radius: 99px;
    background: var(--color-border);
    overflow: hidden;
}

.gen__bar span {
    display: block;
    height: 100%;
    border-radius: 99px;
    transition: width .6s ease;
}

.gen__q {
    display: flex;
    align-items: flex-start;
    gap: .55rem;
    padding: .5rem .1rem;
    font-size: .86rem;
    line-height: 1.6;
    border-bottom: 1px dashed var(--color-border);
}

.gen__q:last-child {
    border-bottom: none;
}

.gen__q input {
    margin-top: .35rem;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════════════════════
   5c. SEO PREVIEW — نتيجة بحث + معاينة واتساب من head المتعلّم
   ═══════════════════════════════════════════════════════════════════════════ */
.seo {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 1rem;
    margin: 1.5rem 0;
}

.seo__card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md, .75rem);
    padding: 1rem 1.1rem;
    min-width: 0;
}

.seo__label {
    font-size: .78rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: .4rem;
    margin-bottom: .8rem;
}

.seo__card--google {
    direction: ltr;
    text-align: left;
    font-family: Arial, Helvetica, sans-serif;
}

.seo__card--google .seo__label {
    direction: rtl;
    text-align: right;
    font-family: var(--font-sans);
}

.seo__url {
    font-size: .8rem;
    color: #4d5156;
    color: color-mix(in srgb, var(--color-text) 70%, transparent);
    margin-bottom: .15rem;
    word-break: break-all;
}

.seo__title {
    font-size: 1.2rem;
    color: #1a0dab;
    color: color-mix(in srgb, var(--color-primary) 80%, #1a0dab);
    line-height: 1.3;
    margin-bottom: .25rem;
    unicode-bidi: plaintext;
}

.seo__desc {
    font-size: .9rem;
    color: var(--color-text-secondary);
    line-height: 1.55;
    unicode-bidi: plaintext;
}

.seo__empty {
    opacity: .55;
    font-style: italic;
}

.seo__bubble {
    background: #dcf8c6;
    color: #111;
    border-radius: 10px 10px 2px 10px;
    padding: .55rem;
    max-width: 320px;
    font-size: .88rem;
    box-shadow: 0 1px 1px rgba(0, 0, 0, .12);
}

body.dark-mode .seo__bubble {
    background: #005c4b;
    color: #e9edef;
}

.seo__img {
    height: 92px;
    border-radius: 6px;
    background: rgba(0, 0, 0, .08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .75rem;
    color: rgba(0, 0, 0, .45);
    margin-bottom: .45rem;
    font-family: var(--font-mono);
}

body.dark-mode .seo__img {
    background: rgba(255, 255, 255, .1);
    color: rgba(255, 255, 255, .55);
}

.seo__img--on {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent, var(--color-primary)));
    color: #fff;
}

.seo__wa-title {
    font-weight: 700;
    line-height: 1.35;
}

.seo__wa-desc {
    font-size: .8rem;
    opacity: .85;
    line-height: 1.45;
    margin: .15rem 0;
}

.seo__wa-url {
    font-size: .72rem;
    opacity: .6;
    direction: ltr;
    text-align: left;
}

@media (max-width: 720px) {
    .seo {
        grid-template-columns: 1fr;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   5d. TABLE FILTER
   ═══════════════════════════════════════════════════════════════════════════ */
.tfilter {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin: 1rem 0 .5rem;
}

.tfilter input {
    flex: 1;
    padding: .6rem .9rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md, .75rem);
    background: var(--color-bg-secondary);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: .95rem;
    outline: none;
}

.tfilter input:focus {
    border-color: var(--color-primary);
}

.tfilter__count {
    font-family: var(--font-mono);
    font-size: .8rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

/* ═══════════════════════════════════════════════════════════════════════════
   9. JSLAB — كونسول ومسرح DOM للملعب المعزول
   ═══════════════════════════════════════════════════════════════════════════ */
.preview-wrapper.has-stage {
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: .5rem;
}

.js-stage {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm, .4rem);
    overflow: hidden;
    min-height: 140px;
    display: flex;
}

.js-frame {
    width: 100%;
    height: 100%;
    min-height: 140px;
    border: 0;
    background: #fff;
}

.js-console {
    flex: 1;
    min-height: 120px;
    max-height: 100%;
    overflow-y: auto;
    background: var(--console-bg, #0b1220);
    color: var(--console-fg, #d1fae5);
    border-radius: var(--radius-sm, .4rem);
    padding: .6rem .8rem;
    font-family: var(--font-mono);
    font-size: .84rem;
    line-height: 1.55;
    direction: ltr;
    text-align: left;
    unicode-bidi: plaintext;
}

.preview-wrapper.has-stage .js-console {
    max-height: 40%;
    min-height: 90px;
}

.console-line {
    padding: .12rem 0 .12rem 1.1rem;
    position: relative;
    white-space: pre-wrap;
    word-break: break-word;
    unicode-bidi: plaintext;
}

.console-line::before {
    content: '›';
    position: absolute;
    left: 0;
    opacity: .45;
}

.console-warn { color: #fbbf24; }
.console-warn::before { content: '⚠'; }
.console-error { color: #f87171; }
.console-error::before { content: '✖'; opacity: .9; }
.console-info { color: #93c5fd; }
.console-system {
    color: rgba(255, 255, 255, .38);
    font-style: italic;
    font-size: .78rem;
    margin-top: .25rem;
}
.console-system::before { content: ''; }

/* لوحة الرسم (data-canvas) داخل المسرح */
.js-stage--canvas { background: #0b1220; }
.js-stage .js-frame { min-height: 300px; }

/* شاشة جوال (data-rn): إطار الهاتف حول تطبيق React Native */
.js-stage--phone {
    background: #1e293b;
    padding: 10px 8px 14px;
    border-radius: 26px;
    box-shadow: inset 0 0 0 2px #334155, 0 10px 30px -8px rgba(0, 0, 0, .5);
    /* الإطار يُنشأ عند أول تشغيل فقط. بلا عرض صريح ينكمش الهيكل الفارغ
       إلى حشوته وحدها فيظهر للقارئ شريطًا رفيعًا يبدو معطوبًا. */
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    position: relative;
}

.js-stage--phone::before {
    content: '';
    position: absolute;
    top: 3px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    border-radius: 3px;
    background: #475569;
}

.js-stage--phone .js-frame {
    border-radius: 16px;
    background: #fff;
    min-height: 380px;
}

/* ─────────────────────────────────────────────────────────────────────────────
   SORTER — المصنِّف: ضع كل عنصر في خانته ثم افهم لماذا  [data-sort]
   لا سحب ولا إفلات: الاختيار بشريحة تُضغَط، فيعمل باللمس وبلوحة المفاتيح معًا.
   ───────────────────────────────────────────────────────────────────────────── */
.sorter {
    margin: 1.5rem 0;
}

.sorter__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: .6rem;
    margin-bottom: .8rem;
}

.sorter__count {
    font-size: .85rem;
    font-weight: 700;
    color: var(--color-text-secondary);
}

.sorter__count.warn {
    color: var(--color-warning);
}

.sorter__note {
    font-size: .82rem;
    color: var(--color-text-muted);
}

.sorter__btn {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    background: var(--color-primary);
    color: #fff;
    border: 0;
    border-radius: var(--radius-md);
    padding: .55rem 1.1rem;
    font-family: inherit;
    font-size: .88rem;
    font-weight: 700;
    cursor: pointer;
}

.sorter__btn:hover {
    background: var(--color-primary-hover, var(--color-primary));
}

.sorter__item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    padding: .85rem 1rem;
    margin-bottom: .6rem;
    transition: border-color .18s;
}

.sorter__text {
    font-size: .92rem;
    line-height: 1.85;
}

.sorter__text strong {
    color: var(--color-text);
}

.sorter__opts {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    margin-top: .65rem;
}

.sorter__chip {
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text-secondary);
    border-radius: 999px;
    padding: .35rem .85rem;
    font-family: inherit;
    font-size: .82rem;
    line-height: 1.6;
    cursor: pointer;
    transition: background .15s, color .15s, border-color .15s;
}

.sorter__chip:hover {
    border-color: var(--color-primary);
    color: var(--color-text);
}

.sorter__chip.on {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    font-weight: 700;
}

/* بعد الكشف: الخانة الصحيحة تُعلَّم دائمًا، والاختيار الخاطئ يُشطب */
.sorter__chip.key {
    border-color: var(--color-success);
    box-shadow: inset 0 0 0 1px var(--color-success);
}

.sorter__chip.miss {
    text-decoration: line-through;
    text-decoration-thickness: 2px;
    opacity: .8;
}

.sorter__fb {
    display: none;
    gap: .5rem;
    margin-top: .7rem;
    padding-top: .65rem;
    border-top: 1px dashed var(--color-border);
    font-size: .85rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.sorter__fb.visible {
    display: flex;
}

.sorter__fb i {
    margin-top: .28rem;
    flex: none;
}

.sorter__item.right {
    border-color: color-mix(in srgb, var(--color-success) 45%, transparent);
}

.sorter__item.right .sorter__fb i {
    color: var(--color-success);
}

.sorter__item.wrong {
    border-color: color-mix(in srgb, var(--color-error) 45%, transparent);
}

.sorter__item.wrong .sorter__fb i {
    color: var(--color-error);
}

.sorter__item.neutral .sorter__fb i {
    color: var(--color-primary);
}

.sorter__done {
    display: none;
    align-items: center;
    gap: .5rem;
    margin-top: .8rem;
    padding: .7rem 1rem;
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--color-success) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--color-success) 35%, transparent);
    font-size: .88rem;
    font-weight: 700;
}

.sorter__done.visible {
    display: flex;
}

.sorter__done i {
    color: var(--color-success);
}

/* ─────────────────────────────────────────────────────────────────────────────
   GITLAB — طرفية Git محاكاة + رسم التاريخ  [data-git]
   الطرفية ltr دائمًا لأن الأوامر إنجليزية، والشرح حولها عربي.
   ───────────────────────────────────────────────────────────────────────────── */
.gitlab {
    margin: 1.5rem 0;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg, .75rem);
    padding: .9rem;
}

.gitlab__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    margin-bottom: .75rem;
}

.gitlab__title {
    font-size: .87rem;
    font-weight: 700;
    color: var(--color-text-secondary);
}

.gitlab__title i { color: var(--color-primary); }

.gitlab__reset {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm, .4rem);
    padding: .3rem .7rem;
    font-family: inherit;
    font-size: .78rem;
    cursor: pointer;
}

.gitlab__reset:hover { border-color: var(--color-primary); color: var(--color-text); }

.gitlab__grid {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: .75rem;
    align-items: stretch;
}

@media (max-width: 760px) {
    .gitlab__grid { grid-template-columns: 1fr; }
}

/* الطرفية */
.gitlab__term {
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--console-bg, #0b1220);
    border-radius: var(--radius-sm, .4rem);
    overflow: hidden;
}

.gitlab__out {
    flex: 1;
    min-height: 210px;
    max-height: 320px;
    overflow-y: auto;
    padding: .7rem .8rem;
    direction: ltr;
    text-align: left;
    font-family: var(--font-mono);
    font-size: .8rem;
    line-height: 1.65;
    color: var(--console-fg, #d1fae5);
}

.gitlab__row { white-space: pre-wrap; unicode-bidi: plaintext; }
.gitlab__row.is-cmd { color: #93c5fd; font-weight: 700; }
.gitlab__row.is-err { color: #fca5a5; }
.gitlab__row.is-note { color: #94a3b8; font-style: italic; }

.gitlab__line {
    display: flex;
    align-items: center;
    gap: .4rem;
    border-top: 1px solid rgba(255, 255, 255, .12);
    padding: .45rem .8rem;
    direction: ltr;
}

.gitlab__ps { color: #34d399; font-family: var(--font-mono); font-size: .85rem; flex: none; }

.gitlab__in {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: 0;
    outline: none;
    color: #e2e8f0;
    font-family: var(--font-mono);
    font-size: .82rem;
}

.gitlab__in::placeholder { color: #64748b; }

/* اللوحة الجانبية */
.gitlab__side { display: flex; flex-direction: column; gap: .6rem; min-width: 0; }

.gitlab__files, .gitlab__graph {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm, .4rem);
    padding: .55rem .65rem;
    min-width: 0;
}

.gitlab__graph { max-height: 230px; overflow-y: auto; }

.gitlab__cap {
    font-size: .72rem;
    font-weight: 800;
    color: var(--color-text-muted);
    margin-bottom: .4rem;
}

.gitlab__empty { font-size: .78rem; color: var(--color-text-muted); }

.gitlab__file {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .5rem;
    font-size: .76rem;
    padding: .2rem 0;
    border-inline-start: 3px solid transparent;
    padding-inline-start: .45rem;
}

.gitlab__file code { font-size: .76rem; }
.gitlab__file span { color: var(--color-text-muted); flex: none; }
.gf--untracked { border-inline-start-color: var(--color-error); }
.gf--modified { border-inline-start-color: var(--color-warning); }
.gf--staged { border-inline-start-color: var(--color-success); }
.gf--deleted { border-inline-start-color: var(--color-error); opacity: .7; }
.gf--clean { border-inline-start-color: var(--color-border); }

/* عقد التاريخ */
.gitlab__node {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: .35rem;
    font-size: .76rem;
    padding: .28rem .3rem;
    border-inline-start: 2px solid var(--color-border);
    padding-inline-start: .55rem;
    margin-inline-start: .2rem;
}

.gitlab__node.is-head { border-inline-start-color: var(--color-primary); background: color-mix(in srgb, var(--color-primary) 8%, transparent); }
.gitlab__node.is-merge { border-inline-start-style: double; border-inline-start-width: 4px; }
.gitlab__oid { font-family: var(--font-mono); color: var(--color-text-muted); direction: ltr; }
.gitlab__msg { color: var(--color-text); }

.gitlab__ref, .gitlab__tag, .gitlab__merge {
    font-size: .66rem;
    font-weight: 700;
    border-radius: 999px;
    padding: 1px 7px;
    direction: ltr;
}

.gitlab__ref { background: var(--color-bg-tertiary); color: var(--color-text-secondary); }
.gitlab__ref.is-head { background: var(--color-primary); color: #fff; }
.gitlab__tag { background: color-mix(in srgb, var(--color-warning) 20%, transparent); color: var(--color-warning); }
.gitlab__merge { background: color-mix(in srgb, var(--color-success) 18%, transparent); color: var(--color-success); }

.gitlab__remote {
    margin-top: .5rem;
    padding-top: .45rem;
    border-top: 1px dashed var(--color-border);
    font-size: .74rem;
    color: var(--color-text-secondary);
}

.gitlab__remote i { color: var(--color-primary); }

.gitlab .check { margin-top: .8rem; }