/* =========================================================
   БЛОК «ТРАЕКТОРИЯ ОБУЧЕНИЯ» — ИНТЕРАКТИВНЫЕ ВКЛАДКИ
   Используется в parts/online_content.php (секция 3)

   Десктоп (>=992px): горизонтальные табы + панель справа
   Мобайл  (<992px):  вертикальный аккордеон (та же разметка)
   ========================================================= */

.online-tracks {
    --ot-navy:   #1e3a8a;
    --ot-blue:   #3b82f6;
    --ot-red:    #dc3545;
    --ot-red-d:  #b02a37;
    --ot-ink:    #212529;
    --ot-muted:  #6c757d;
    --ot-line:   #e9ecef;
    --ot-blue-l: #dbeafe;
    --ot-red-l:  #fecaca;
}

/* ---------- переопределение ширины контейнера под блок ---------- */
.online-tracks .container,
.container.online-tracks-container {
    max-width: 1240px;
}

/* =========================================================
   1. КАРКАС
   ========================================================= */
.online-tracks-switcher {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
    align-items: start;
    margin-top: 2.5rem;
}

@media (min-width: 992px) {
    .online-tracks-switcher {
        grid-template-columns: minmax(330px, 380px) 1fr;
        gap: 2.25rem;
    }
}

/* =========================================================
   2. ТАБЛИСТ (список направлений)
   ========================================================= */
.online-tracks-tablist {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

@media (min-width: 992px) {
    .online-tracks-tablist {
        position: sticky;
        top: 100px;
        gap: 0.75rem;
    }
}

/* ---------- одна вкладка ---------- */
.online-tracks-tab {
    position: relative;
    width: 100%;
    display: flex;
    align-items: flex-start;
    gap: 0.9rem;
    padding: 1rem 1.15rem;
    text-align: left;

    background: #fff;
    border: 1.5px solid var(--ot-line);
    border-radius: 18px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
    cursor: pointer;
    font-family: inherit;
    overflow: hidden;

    transition: transform 0.25s ease, box-shadow 0.25s ease,
                border-color 0.25s ease, background 0.25s ease;
}

/* цветная полоса-индикатор слева */
.online-tracks-tab::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--ot-red) 0%, var(--ot-red-d) 100%);
    opacity: 0;
    transform: scaleY(0.35);
    transition: opacity 0.25s ease, transform 0.3s ease;
}

.online-tracks-tab:hover {
    border-color: var(--ot-blue-l);
    box-shadow: 0 8px 22px rgba(30, 58, 138, 0.12);
    transform: translateY(-2px);
}

.online-tracks-tab:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.45);
    outline-offset: 2px;
}

/* ---------- иконка направления ---------- */
.online-tracks-tab__icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--ot-navy);
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border: 1px solid rgba(30, 58, 138, 0.1);
    transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease,
                box-shadow 0.3s ease;
}

.online-tracks-tab:hover .online-tracks-tab__icon {
    transform: scale(1.06) rotate(-4deg);
}

/* ---------- текст вкладки ---------- */
.online-tracks-tab__body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding-right: 1.6rem; /* место под стрелку */
}

.online-tracks-tab__step {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--ot-muted);
    transition: color 0.25s ease;
}

.online-tracks-tab__title {
    font-size: 1.02rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--ot-ink);
    transition: color 0.25s ease;
}

.online-tracks-tab__hint {
    font-size: 0.86rem;
    font-weight: 400;
    line-height: 1.45;
    color: var(--ot-muted);
    margin: 0;
    transition: color 0.25s ease;
}

/* ---------- стрелка / шеврон ---------- */
.online-tracks-tab__arrow {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--ot-navy);
    background: #f1f3f5;
    transition: background 0.25s ease, color 0.25s ease, transform 0.3s ease;
}

@media (min-width: 992px) {
    .online-tracks-tab__arrow { transform: translateY(-50%) rotate(-90deg); }
}

/* ---------- АКТИВНАЯ ВКЛАДКА ---------- */
.online-tracks-tab.is-active {
    border-color: var(--ot-red-l);
    background: linear-gradient(135deg, #fff8f8 0%, #ffffff 60%);
    box-shadow: 0 12px 30px rgba(220, 53, 69, 0.16);
}

.online-tracks-tab.is-active::before {
    opacity: 1;
    transform: scaleY(1);
}

.online-tracks-tab.is-active .online-tracks-tab__icon {
    color: #fff;
    background: linear-gradient(135deg, var(--ot-red) 0%, var(--ot-red-d) 100%);
    border-color: transparent;
    box-shadow: 0 5px 14px rgba(220, 53, 69, 0.35);
}

.online-tracks-tab.is-active .online-tracks-tab__step { color: var(--ot-red); }
.online-tracks-tab.is-active .online-tracks-tab__title { color: var(--ot-navy); }
.online-tracks-tab.is-active .online-tracks-tab__hint  { color: #6b7280; }

.online-tracks-tab.is-active .online-tracks-tab__arrow {
    background: var(--ot-red);
    color: #fff;
    transform: translateY(-50%) rotate(90deg);
}

@media (min-width: 992px) {
    .online-tracks-tab.is-active { transform: translateX(4px); }
    .online-tracks-tab.is-active .online-tracks-tab__arrow {
        transform: translateY(-50%) rotate(-90deg);
    }
}

/* =========================================================
   3. ПАНЕЛИ (содержимое направления)
   ========================================================= */
.online-tracks-panels {
    position: relative;
    min-height: 0;
}

@media (min-width: 992px) {
    .online-tracks-panels { min-height: 520px; }
}

.online-tracks-panel {
    display: none;
}

.online-tracks-panel.is-active {
    display: block;
    animation: otPanelIn 0.45s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes otPanelIn {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---------- карточка панели ---------- */
.online-tracks-card {
    position: relative;
    height: 100%;
    padding: 2rem;
    background: #fff;
    border: 1.5px solid var(--ot-line);
    border-radius: 26px;
    box-shadow: 0 16px 40px rgba(30, 58, 138, 0.09);
    overflow: hidden;
}

/* декоративные «блики» */
.online-tracks-card::before {
    content: "";
    position: absolute;
    top: -110px;
    right: -90px;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.14) 0%, rgba(59, 130, 246, 0) 70%);
    pointer-events: none;
}

.online-tracks-card::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--ot-navy) 0%, var(--ot-blue) 45%, var(--ot-red) 100%);
}

/* ---------- шапка панели ---------- */
.online-tracks-head {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 1.1rem;
    margin-bottom: 1.25rem;
}

/* ---------- иллюстрация направления (img/track_N.png) ---------- */
.online-tracks-card__img {
    display: block;
    width: 116px;
    height: 116px;
    object-fit: contain;
    margin: 0 auto 1.25rem;
    filter: drop-shadow(0 10px 18px rgba(30, 58, 138, 0.18));
    animation: otImgFloat 6s ease-in-out infinite;
    pointer-events: none;
    user-select: none;
}

@keyframes otImgFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-7px); }
}

@media (min-width: 768px) {
    .online-tracks-card__img {
        position: absolute;
        top: 22px;
        right: 24px;
        width: 142px;
        height: 142px;
        margin: 0;
        z-index: 1;
    }

    /* освобождаем место под иллюстрацию в шапке */
    .online-tracks-head { margin-right: 168px; }
}

.online-tracks-head__num {
    flex-shrink: 0;
    width: 58px;
    height: 58px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, var(--ot-navy) 0%, var(--ot-blue) 100%);
    box-shadow: 0 8px 20px rgba(30, 58, 138, 0.28);
}

.online-tracks-head__title {
    font-size: 1.45rem;
    font-weight: 800;
    line-height: 1.25;
    color: var(--ot-navy);
    margin: 0 0 0.35rem;
    letter-spacing: -0.01em;
}

.online-tracks-head__lead {
    font-size: 0.98rem;
    line-height: 1.6;
    color: #495057;
    margin: 0;
}

/* ---------- бейджи (классы / длительность) ---------- */
.online-tracks-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0 0 1.5rem;
    padding: 0;
    list-style: none;
}

.online-tracks-badges li {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.4rem 0.85rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.2px;
    color: var(--ot-navy);
    background: #f4f8ff;
    border: 1px solid var(--ot-blue-l);
}

.online-tracks-badges li i { font-size: 0.78rem; color: var(--ot-red); }

/* ---------- две колонки: темы + результат ---------- */
.online-tracks-body {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .online-tracks-body {
        grid-template-columns: 1.25fr 1fr;
        gap: 2rem;
    }
}

.online-tracks-block__title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    color: var(--ot-muted);
    margin: 0 0 0.85rem;
}

.online-tracks-block__title i { color: var(--ot-red); font-size: 0.85rem; }

/* список тем */
.online-tracks-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.online-tracks-topics li {
    padding: 0.42rem 0.85rem;
    border-radius: 10px;
    font-size: 0.87rem;
    font-weight: 600;
    color: #334155;
    background: #f8f9fa;
    border: 1px solid var(--ot-line);
    transition: transform 0.2s ease, border-color 0.2s ease,
                color 0.2s ease, background 0.2s ease;
}

.online-tracks-topics li:hover {
    transform: translateY(-2px);
    border-color: var(--ot-blue);
    color: var(--ot-navy);
    background: #fff;
}

/* список результатов */
.online-tracks-results {
    margin: 0;
    padding: 1.15rem 1.25rem;
    list-style: none;
    background: linear-gradient(160deg, #f8fbff 0%, #fff5f5 100%);
    border: 1px dashed var(--ot-red-l);
    border-radius: 18px;
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}

.online-tracks-results li {
    position: relative;
    padding-left: 1.65rem;
    font-size: 0.92rem;
    line-height: 1.5;
    color: #374151;
}

.online-tracks-results li::before {
    content: "\f00c"; /* fa-check */
    font-family: "Font Awesome 6 Free", "Font Awesome 5 Free", FontAwesome;
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 0.1rem;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.55rem;
    color: #fff;
    background: linear-gradient(135deg, var(--ot-red) 0%, var(--ot-red-d) 100%);
}

/* ---------- подвал панели: формат занятий + CTA ---------- */
.online-tracks-foot {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1.75rem;
    padding-top: 1.35rem;
    border-top: 1px solid var(--ot-line);
}

.online-tracks-foot > .btn { margin-left: auto; }

.online-tracks-format {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.online-tracks-format li {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--ot-muted);
}

.online-tracks-format li i { color: var(--ot-blue); }

/* ---------- прогресс-полоса «этап X из 4» ---------- */
.online-tracks-progress {
    margin-top: 1.5rem;
}

.online-tracks-progress__label {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--ot-muted);
    margin-bottom: 0.45rem;
}

.online-tracks-progress__bar {
    height: 6px;
    border-radius: 999px;
    background: #eef1f5;
    overflow: hidden;
}

.online-tracks-progress__fill {
    display: block;
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--ot-navy) 0%, var(--ot-blue) 55%, var(--ot-red) 100%);
    transition: width 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

/* =========================================================
   4. CTA ПОД БЛОКОМ
   ========================================================= */
.online-tracks-cta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.75rem 1.5rem;
    margin-top: 2.25rem;
    padding: 1.5rem 1.75rem;
    text-align: center;
    background: linear-gradient(135deg, #f8fbff 0%, #fff 50%, #fff8f8 100%);
    border: 1.5px solid var(--ot-line);
    border-radius: 22px;
}

.online-tracks-cta__text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ot-ink);
    margin: 0;
}

.online-tracks-cta__text span { color: var(--ot-red); font-weight: 800; }

/* =========================================================
   5. МОБИЛЬНАЯ АДАПТАЦИЯ
   Табы превращаются в горизонтальную ленту «пилюль»,
   панель с содержимым всегда видна под ними
   ========================================================= */
@media (max-width: 991.98px) {
    .online-tracks-switcher {
        margin-top: 1.75rem;
        gap: 0.9rem;
    }

    /* лента табов */
    .online-tracks-tablist {
        position: static;
        flex-direction: row;
        overflow-x: auto;
        gap: 0.5rem;
        padding: 0.25rem 0.25rem 0.65rem;
        scroll-snap-type: x proximity;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
    }

    .online-tracks-tablist::-webkit-scrollbar { display: none; }

    .online-tracks-tab {
        flex: 0 0 auto;
        width: auto;
        align-items: center;
        gap: 0.6rem;
        padding: 0.55rem 1.1rem 0.55rem 0.6rem;
        border-radius: 999px;
        scroll-snap-align: start;
    }

    .online-tracks-tab::before { display: none; }
    .online-tracks-tab:hover { transform: none; }

    .online-tracks-tab__icon {
        width: 36px;
        height: 36px;
        font-size: 0.95rem;
        border-radius: 10px;
    }

    .online-tracks-tab__body {
        flex-direction: row;
        align-items: center;
        gap: 0.55rem;
        padding-right: 0;
    }

    .online-tracks-tab__step,
    .online-tracks-tab__hint,
    .online-tracks-tab__arrow { display: none; }

    .online-tracks-tab__title {
        font-size: 0.9rem;
        white-space: nowrap;
    }

    .online-tracks-tab.is-active { transform: none; }

    /* панель */
    .online-tracks-panel { scroll-margin-top: 90px; }
    .online-tracks-card { padding: 1.5rem 1.25rem; border-radius: 22px; }
    .online-tracks-head { gap: 0.85rem; }
    .online-tracks-head__num { width: 46px; height: 46px; font-size: 1.15rem; border-radius: 14px; }
    .online-tracks-head__title { font-size: 1.2rem; }
    .online-tracks-head__lead { font-size: 0.92rem; }
}

@media (max-width: 575.98px) {
    .online-tracks-tab__title { font-size: 0.85rem; }
    .online-tracks-tab__icon { width: 32px; height: 32px; font-size: 0.85rem; }

    .online-tracks-card { padding: 1.3rem 1.05rem; }
    .online-tracks-head__title { font-size: 1.1rem; }
    .online-tracks-badges li { font-size: 0.74rem; padding: 0.35rem 0.7rem; }
    .online-tracks-topics li { font-size: 0.82rem; padding: 0.38rem 0.7rem; }
    .online-tracks-results { padding: 1rem; }
    .online-tracks-results li { font-size: 0.87rem; }

    .online-tracks-foot { flex-direction: column; align-items: stretch; }
    .online-tracks-foot > .btn { margin-left: 0; width: 100%; }

    .online-tracks-cta { padding: 1.25rem 1rem; border-radius: 18px; }
    .online-tracks-cta__text { font-size: 0.92rem; }
}

/* =========================================================
   6. ДОСТУПНОСТЬ И ПРОЧЕЕ
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
    .online-tracks * { animation: none !important; transition: none !important; }
}

/* появление блока при скролле: если на сайте нет .scroll-reveal —
   элемент просто видим (страховка от «невидимого» контента) */
.online-tracks-section:not(.scroll-reveal) { opacity: 1; }