/* ============================================================
   کارت آموز — کلاس درس (Learn.aspx)
   پخش‌کننده، فهرست سرفصل‌ها با پیشرفت، و تعامل با استاد
   ============================================================ */

/* هدر سایت ثابت است، پس محتوا باید به اندازهٔ ارتفاع آن فاصله بگیرد
   وگرنه نوار بالای کلاس زیر هدر پنهان می‌شود. */
.kt-learn-wrapper {
    padding-top: calc(var(--topbar-height) + var(--header-height) + 20px);
    padding-bottom: 60px;
}

body.kt-scrolled .kt-learn-wrapper {
    padding-top: calc(var(--topbar-height-scrolled) + var(--header-height-scrolled) + 20px);
}

/* ---------- نوار بالای کلاس ---------- */
.kt-learn-topbar {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    background: var(--bg-box);
    border: 1px solid #eee3c8;
    border-radius: var(--radius-main);
    box-shadow: var(--shadow-main);
    padding: 16px 20px;
    margin-bottom: 22px;
}

.kt-learn-topbar-icon {
    width: 48px;
    height: 48px;
    flex: 0 0 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.kt-learn-topbar-main {
    flex: 1 1 260px;
    min-width: 0;
}

.kt-learn-topbar-title {
    font-size: 19px;
    font-weight: 700;
    color: var(--text-black);
    margin-bottom: 6px;
    line-height: 1.5;
}

.kt-learn-topbar-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 16px;
    font-size: 13px;
    color: #6b6b85;
}

.kt-learn-topbar-meta a { color: inherit; text-decoration: none; }
.kt-learn-topbar-meta a:hover { color: var(--primary-dark); }
.kt-learn-topbar-meta i { color: var(--primary); }

.kt-learn-topbar-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.kt-learn-exit {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    border-radius: var(--radius-btn);
    border: 1px solid #e3e3ef;
    background: #fbfbfe;
    color: #55556e;
    font-family: var(--font-family);
    font-size: 13px;
    text-decoration: none;
    white-space: nowrap;
    transition: var(--transition);
}

.kt-learn-exit:hover {
    border-color: var(--primary);
    color: var(--primary-dark);
}

/* ---------- چیدمان: سایدبار سمت راست ----------
   ستون اول در RTL سمت راست می‌نشیند، پس سایدبار
   باید اولین فرزند گرید باشد (همان دام kt-faq-layout). */
.kt-learn-layout {
    display: grid;
    grid-template-columns: 340px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

@media (max-width: 991px) {
    .kt-learn-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    /* روی موبایل پخش‌کننده باید اول بیاید؛ وگرنه کاربر باید از کل
       فهرست سرفصل‌ها رد شود تا به ویدئو برسد. */
    .kt-learn-main { order: 1; }
    .kt-learn-sidebar { order: 2; }
}

/* ---------- سایدبار ---------- */
.kt-learn-sidebar {
    background: var(--bg-box);
    border: 1px solid #eee3c8;
    border-radius: var(--radius-main);
    box-shadow: var(--shadow-main);
    overflow: hidden;
    position: sticky;
    top: calc(var(--header-height-scrolled) + 16px);
}

@media (max-width: 991px) {
    .kt-learn-sidebar { position: static; }
}

.kt-learn-progress-box {
    padding: 20px;
    border-bottom: 1px solid #f1f1f6;
    text-align: center;
}

.kt-learn-ring {
    position: relative;
    width: 108px;
    height: 108px;
    margin: 0 auto 12px;
}

.kt-learn-ring svg { transform: rotate(-90deg); display: block; }
.kt-learn-ring-bg { fill: none; stroke: #f0f0f6; stroke-width: 9; }

.kt-learn-ring-fill {
    fill: none;
    stroke: var(--primary);
    stroke-width: 9;
    stroke-linecap: round;
    transition: stroke-dashoffset .5s ease;
}

.kt-learn-ring-text {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text-black);
}

.kt-learn-ring-num { font-size: 24px; line-height: 1; }
.kt-learn-ring-unit { font-size: 12px; color: #8a8aaa; font-weight: 400; margin-top: 3px; }

.kt-learn-progress-label {
    font-size: 13px;
    color: #6b6b85;
}

.kt-learn-progress-label strong { color: var(--primary-dark); }

/* ---------- فهرست سرفصل‌ها ---------- */
.kt-learn-toc-title {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 18px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-black);
    border-bottom: 1px solid #f1f1f6;
}

.kt-learn-toc-title i { color: var(--primary); }

.kt-learn-toc {
    max-height: 560px;
    overflow-y: auto;
}

.kt-learn-chapter { border-bottom: 1px solid #f5f5fa; }
.kt-learn-chapter:last-child { border-bottom: 0; }

.kt-learn-chapter-head {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 13px 18px;
    background: #fbfbfe;
    border: 0;
    border-right: 3px solid transparent;
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 700;
    color: var(--text-black);
    text-align: right;
    cursor: pointer;
    transition: var(--transition);
}

.kt-learn-chapter-head:hover { background: #f5f2e8; }
.kt-learn-chapter.kt-open .kt-learn-chapter-head { border-right-color: var(--primary); }

.kt-learn-chapter-num {
    width: 24px;
    height: 24px;
    flex: 0 0 24px;
    border-radius: 8px;
    background: var(--primary-light);
    color: var(--primary-dark);
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kt-learn-chapter-name { flex: 1; min-width: 0; line-height: 1.6; }

.kt-learn-chapter-count {
    font-size: 11px;
    font-weight: 400;
    color: #8a8aaa;
    white-space: nowrap;
}

.kt-learn-chapter-toggle { color: #b0b0c4; transition: var(--transition); }
.kt-learn-chapter.kt-open .kt-learn-chapter-toggle { transform: rotate(180deg); }

.kt-learn-chapter-body { display: none; }
.kt-learn-chapter.kt-open .kt-learn-chapter-body { display: block; }

/* ---------- یک جلسه در فهرست ---------- */
.kt-learn-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 18px 11px 14px;
    border-right: 3px solid transparent;
    color: #4a4a63;
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
}

.kt-learn-item:hover { background: #fafafd; color: var(--primary-dark); }

.kt-learn-item.kt-active {
    background: #fdf8ec;
    border-right-color: var(--primary);
    color: var(--primary-dark);
    font-weight: 700;
}

.kt-learn-item-check {
    width: 20px;
    height: 20px;
    flex: 0 0 20px;
    border-radius: 50%;
    border: 2px solid #dcdce8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: transparent;
    transition: var(--transition);
}

.kt-learn-item.kt-done .kt-learn-item-check {
    background: #16a34a;
    border-color: #16a34a;
    color: #fff;
}

.kt-learn-item-name {
    flex: 1;
    min-width: 0;
    line-height: 1.7;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.kt-learn-item-type { font-size: 14px; color: #b0b0c4; flex: 0 0 auto; }
.kt-learn-item.kt-active .kt-learn-item-type { color: var(--primary); }

.kt-learn-item-time {
    font-size: 11px;
    color: #9a9ab0;
    white-space: nowrap;
    flex: 0 0 auto;
}

/* ---------- جعبه‌های پایین سایدبار ---------- */
.kt-learn-side-box {
    padding: 16px 18px;
    border-top: 1px solid #f1f1f6;
}

.kt-learn-side-box-title {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-black);
    margin-bottom: 12px;
}

.kt-learn-side-box-title i { color: var(--primary); }

.kt-learn-exam {
    display: block;
    padding: 11px 13px;
    border: 1px solid #eee3c8;
    border-radius: var(--radius-btn);
    background: #fdfaf2;
    text-decoration: none;
    margin-bottom: 9px;
    transition: var(--transition);
}

.kt-learn-exam:hover { border-color: var(--primary); box-shadow: var(--shadow-main); }
.kt-learn-exam:last-child { margin-bottom: 0; }

.kt-learn-exam-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-black);
    margin-bottom: 5px;
    line-height: 1.6;
}

.kt-learn-exam-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 12px;
    font-size: 11px;
    color: #7a7a94;
}

.kt-learn-exam-meta i { color: var(--primary); }

.kt-learn-cert {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 11px;
    border-radius: var(--radius-btn);
    background: linear-gradient(135deg, #16a34a, #15803d);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
}

.kt-learn-cert:hover { filter: brightness(1.08); color: #fff; }

/* ---------- ستون اصلی ---------- */
.kt-learn-main { min-width: 0; }

.kt-learn-stage {
    background: var(--bg-box);
    border: 1px solid #eee3c8;
    border-radius: var(--radius-main);
    box-shadow: var(--shadow-main);
    overflow: hidden;
    margin-bottom: 20px;
}

.kt-learn-player {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #12121f;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kt-learn-player video,
.kt-learn-player iframe {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
}

.kt-learn-pdf {
    width: 100%;
    height: 640px;
    background: #f4f4f8;
}

.kt-learn-pdf iframe { width: 100%; height: 100%; border: 0; display: block; }

@media (max-width: 767px) {
    .kt-learn-pdf { height: 420px; }
}

/* جای‌گزین وقتی فایل نیست */
.kt-learn-placeholder {
    text-align: center;
    color: #cfcfe0;
    padding: 30px;
}

.kt-learn-placeholder i { font-size: 52px; display: block; margin-bottom: 12px; color: #6b6b85; }
.kt-learn-placeholder p { font-size: 14px; line-height: 1.9; margin: 0; }

/* ---------- اطلاعات جلسهٔ جاری ---------- */
.kt-learn-lesson-head {
    padding: 18px 20px;
    border-top: 1px solid #f1f1f6;
}

.kt-learn-lesson-chapter {
    font-size: 12px;
    color: var(--primary-dark);
    background: var(--primary-light);
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    margin-bottom: 10px;
}

.kt-learn-lesson-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-black);
    line-height: 1.7;
    margin: 0 0 10px;
}

.kt-learn-lesson-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 16px;
    font-size: 12.5px;
    color: #7a7a94;
    margin-bottom: 14px;
}

.kt-learn-lesson-meta i { color: var(--primary); }

.kt-learn-lesson-desc {
    font-size: 13.5px;
    line-height: 2.1;
    color: #55556e;
    margin: 0 0 14px;
}

/* ---------- نوار کنترل جلسه ---------- */
.kt-learn-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    padding-top: 14px;
    border-top: 1px dashed #ececf4;
}

.kt-learn-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 15px;
    border-radius: var(--radius-btn);
    border: 1px solid #e3e3ef;
    background: #fbfbfe;
    color: #55556e;
    font-family: var(--font-family);
    font-size: 13px;
    text-decoration: none;
    white-space: nowrap;
    transition: var(--transition);
}

.kt-learn-nav-btn:hover { border-color: var(--primary); color: var(--primary-dark); }

.kt-learn-nav-btn.kt-disabled {
    opacity: .45;
    pointer-events: none;
}

.kt-learn-complete-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    margin-inline-start: auto;
    padding: 10px 18px;
    border-radius: var(--radius-btn);
    border: 1px solid #16a34a;
    background: #16a34a;
    color: #fff;
    font-family: var(--font-family);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
}

.kt-learn-complete-btn:hover { filter: brightness(1.08); }
.kt-learn-complete-btn[disabled] { opacity: .6; cursor: progress; }

.kt-learn-complete-btn.kt-is-done {
    background: #fff;
    color: #15803d;
}

.kt-learn-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 15px;
    border-radius: var(--radius-btn);
    border: 1px solid var(--primary-light);
    background: #fdfaf2;
    color: var(--primary-dark);
    font-size: 13px;
    text-decoration: none;
    white-space: nowrap;
    transition: var(--transition);
}

.kt-learn-download:hover { border-color: var(--primary); }

/* ---------- کارت تبریک پایان دوره ---------- */
.kt-learn-done-card {
    display: none;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    margin-bottom: 20px;
    border-radius: var(--radius-main);
    background: linear-gradient(135deg, #16a34a, #15803d);
    color: #fff;
    box-shadow: 0 8px 30px rgba(22, 163, 74, .25);
}

.kt-learn-done-card.kt-show { display: flex; }
.kt-learn-done-card i { font-size: 34px; flex: 0 0 auto; }
.kt-learn-done-card strong { display: block; font-size: 16px; margin-bottom: 4px; }
.kt-learn-done-card span { font-size: 13px; line-height: 1.9; opacity: .95; }

/* ---------- تب‌های پایین ---------- */
.kt-learn-panel {
    background: var(--bg-box);
    border: 1px solid #eee3c8;
    border-radius: var(--radius-main);
    box-shadow: var(--shadow-main);
    overflow: hidden;
}

.kt-learn-panel-nav {
    display: flex;
    gap: 4px;
    padding: 6px;
    background: #fbfbfe;
    border-bottom: 1px solid #f1f1f6;
    overflow-x: auto;
}

.kt-learn-panel-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    border: 0;
    border-radius: var(--radius-btn);
    background: transparent;
    color: #6b6b85;
    font-family: var(--font-family);
    font-size: 13.5px;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
}

.kt-learn-panel-btn:hover { color: var(--primary-dark); }

.kt-learn-panel-btn.active {
    background: var(--primary);
    color: #fff;
    font-weight: 700;
}

.kt-learn-panel-body { display: none; padding: 20px; }
.kt-learn-panel-body.active { display: block; }

/* ---------- پرسش و پاسخ داخل کلاس ---------- */
.kt-learn-qa-empty {
    text-align: center;
    color: #9a9ab0;
    font-size: 13.5px;
    padding: 22px 10px;
    line-height: 2;
}

.kt-learn-qa-empty i { font-size: 40px; display: block; margin-bottom: 10px; color: #dcdce8; }

.kt-qa-thread {
    border: 1px solid #f0f0f6;
    border-radius: var(--radius-main);
    padding: 14px 16px;
    margin-bottom: 14px;
    background: #fdfdff;
}

.kt-qa-thread:last-of-type { margin-bottom: 0; }

.kt-qa-head {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    flex-wrap: wrap;
}

.kt-qa-avatar {
    width: 36px;
    height: 36px;
    flex: 0 0 36px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 700;
}

.kt-qa-avatar.kt-teacher { background: #2563eb; }

.kt-qa-meta { flex: 1; min-width: 0; }

.kt-qa-name {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--text-black);
    margin-inline-end: 8px;
}

.kt-qa-time { font-size: 11.5px; color: #9a9ab0; }

.kt-qa-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    padding: 3px 9px;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.kt-qa-badge--answered { background: #dcfce7; color: #15803d; }
.kt-qa-badge--pending { background: #fef3c7; color: #b45309; }
.kt-qa-badge--closed { background: #e5e7eb; color: #4b5563; }
.kt-qa-badge--teacher { background: #dbeafe; color: #1d4ed8; }
.kt-qa-badge--lesson { background: #f3e8ff; color: #7e22ce; }

.kt-qa-text {
    font-size: 13.5px;
    line-height: 2.1;
    color: #44445c;
    margin: 8px 0 0;
    white-space: pre-wrap;
    word-break: break-word;
}

.kt-qa-replies {
    margin: 12px 0 0;
    padding-inline-start: 46px;
    border-top: 1px dashed #ececf4;
    padding-top: 12px;
}

@media (max-width: 575px) {
    .kt-qa-replies { padding-inline-start: 0; }
}

.kt-qa-reply { margin-bottom: 12px; }
.kt-qa-reply:last-child { margin-bottom: 0; }

.kt-qa-reply.kt-from-teacher {
    background: #f5f8ff;
    border: 1px solid #e0e9ff;
    border-radius: var(--radius-btn);
    padding: 10px 12px;
}

/* ---------- فرم‌ها ---------- */
.kt-learn-form { margin-top: 18px; }

.kt-learn-form label {
    display: block;
    font-size: 13.5px;
    font-weight: 700;
    color: var(--text-black);
    margin-bottom: 8px;
}

.kt-learn-form textarea {
    width: 100%;
    min-height: 96px;
    padding: 12px 14px;
    border: 1px solid #e3e3ef;
    border-radius: var(--radius-btn);
    background: #fbfbfe;
    font-family: var(--font-family);
    font-size: 13.5px;
    line-height: 2;
    color: var(--text-black);
    resize: vertical;
    transition: var(--transition);
}

.kt-learn-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
}

.kt-learn-form-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.kt-learn-submit {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 11px 22px;
    border: 0;
    border-radius: var(--radius-btn);
    background: var(--primary);
    color: #fff;
    font-family: var(--font-family);
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: var(--transition);
}

.kt-learn-submit:hover { background: var(--primary-dark); color: #fff; }

.kt-learn-form-hint {
    font-size: 12px;
    color: #9a9ab0;
    line-height: 1.9;
}

/* ---------- امتیازدهی ---------- */
.kt-rate-box { text-align: center; }

.kt-rate-stars {
    display: inline-flex;
    flex-direction: row-reverse;   /* تا با hover ستاره‌های سمت راست هم روشن شوند */
    gap: 4px;
    margin: 6px 0 12px;
}

.kt-rate-stars input { position: absolute; opacity: 0; width: 0; height: 0; }

.kt-rate-stars label {
    font-size: 30px;
    line-height: 1;
    color: #e0e0ea;
    cursor: pointer;
    transition: color .15s ease;
    margin: 0;
}

.kt-rate-stars label:hover,
.kt-rate-stars label:hover ~ label,
.kt-rate-stars input:checked ~ label { color: #f5b301; }

.kt-rate-current {
    font-size: 13px;
    color: #6b6b85;
    line-height: 2;
}

.kt-rate-current strong { color: var(--primary-dark); }

/* ---------- نوار پیشرفت کوچک زیر نوار بالا ---------- */
.kt-learn-bar {
    height: 8px;
    border-radius: var(--radius-full);
    background: #f0f0f6;
    overflow: hidden;
    margin-top: 10px;
}

.kt-learn-bar span {
    display: block;
    height: 100%;
    border-radius: var(--radius-full);
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    transition: width .5s ease;
}