/* Lecture slider — English (LTR) layout. Mirror of lecture-slider-he.css. */


    html[lang="en"] body { font-family: 'Inter', sans-serif; }
    html[lang="en"] h1,
    html[lang="en"] h2,
    html[lang="en"] h3,
    html[lang="en"] .nav__logo-name { font-family: 'Cormorant Garamond', Georgia, serif; letter-spacing: 0.02em; }

    /* ── SLIDER SHELL ── */
    .lec-shell { background: var(--bg); overflow: hidden; }
    .lec-track {
      display: flex;
      direction: ltr;
      transition: transform 0.75s var(--ease-in-out);
      will-change: transform;
    }
    .lec-panel {
      min-width: 100%;
      padding: 5rem 0 4rem;
      flex-shrink: 0;
      direction: ltr;
    }

    /* ── PANEL INNER GRID ── */
    .lec-inner {
      display: grid;
      grid-template-columns: 360px 1fr;
      gap: 5rem;
      align-items: start;
    }
    .lec-info {
      max-width: 820px;
    }
    @media (max-width: 960px) {
      .lec-inner { grid-template-columns: 1fr; gap: 2.5rem; }
    }
    @media (max-width: 768px) {
      .lec-hero-img { display: none; }
    }
    @media (max-width: 640px) {
      /* ── MOBILE: stack all lectures vertically ── */
      .lec-shell { overflow-x: hidden; }
      .lec-track {
        display: block !important;
        transform: none !important;
        transition: none !important;
      }
      .lec-panel {
        width: 100%;
        min-width: 0;
        padding: 2.5rem 0;
        border-bottom: 1px solid rgba(201,168,76,.15);
      }
      .lec-panel:last-child { border-bottom: none; }
      /* Hide all horizontal-nav elements */
      .lec-progress, .lec-hint, .lec-hint--desktop, .lec-hint--mobile { display: none; }
      .lec-sidenav { display: none !important; }
      /* Hide flyer */
      .lec-flyer { display: none; }
      /* Ensure text fits screen */
      .lec-info { max-width: 100%; overflow-x: hidden; }
      .lec-info h2 { font-size: clamp(1.1rem, 4vw, 1.35rem); overflow-wrap: break-word; word-break: break-word; }
      .lec-cta-box { flex-direction: column; align-items: flex-start; }
      /* Fix hero white-space overflow */
      .page-hero p { white-space: normal !important; }
    }

    /* ── FLYER ── */
    .lec-flyer { position: sticky; top: 90px; }
    .lec-flyer__wrap {
      position: relative;
      border-radius: 14px;
      overflow: hidden;
      box-shadow:
        0 0 0 1px rgba(201,168,76,.22),
        0 30px 80px rgba(0,0,0,.7),
        0 0 120px rgba(201,168,76,.08);
      transition: box-shadow 0.5s ease, transform 0.5s ease;
      cursor: default;
    }
    .lec-flyer__wrap:hover {
      transform: translateY(-6px) scale(1.012);
      box-shadow:
        0 0 0 1px rgba(201,168,76,.5),
        0 40px 100px rgba(0,0,0,.75),
        0 0 160px rgba(201,168,76,.16);
    }
    .lec-flyer__wrap img { display: block; width: 100%; }
    .lec-flyer__badge {
      position: absolute;
      bottom: 1.2rem;
      left: 1.2rem;
      background: rgba(9,12,20,.88);
      border: 1px solid rgba(201,168,76,.45);
      border-radius: 6px;
      padding: 0.4rem 0.9rem;
      font-family: 'Cormorant Garamond', serif;
      font-size: 0.65rem;
      font-weight: 800;
      color: var(--gold);
      letter-spacing: 0.15em;
      backdrop-filter: blur(10px);
    }

    /* ── INFO ── */
    .lec-info__num {
      display: block;
      font-family: 'Cormorant Garamond', serif;
      font-size: 0.68rem;
      font-weight: 800;
      color: var(--gold);
      letter-spacing: 0.25em;
      margin-bottom: 1.1rem;
    }
    .lec-info h2 {
      font-family: 'Cormorant Garamond', Georgia, serif;
      font-size: clamp(1.5rem, 2.8vw, 2.1rem);
      color: var(--cream);
      line-height: 1.35;
      margin: 0 0 0.6rem;
    }
    .lec-info__tagline {
      display: block;
      font-size: 0.97rem;
      color: var(--gold);
      font-weight: 500;
      margin-bottom: 1.6rem;
      opacity: 0.85;
    }
    .lec-divider {
      width: 52px;
      height: 2px;
      background: linear-gradient(to right, var(--gold), rgba(201,168,76,.15));
      margin-bottom: 1.6rem;
      border-radius: 2px;
    }
    .lec-info__desc {
      font-size: 0.93rem;
      color: var(--t2);
      line-height: 1.95;
      margin-bottom: 2rem;
    }
    .lec-points {
      list-style: none;
      padding: 0 0 0 1.4rem;
      margin: 0 0 2.5rem;
      border-left: 2px solid rgba(201,168,76,.2);
      display: flex;
      flex-direction: column;
      gap: 0.9rem;
    }
    .lec-points li {
      display: flex;
      gap: 0.75rem;
      align-items: flex-start;
      font-size: 0.88rem;
      color: var(--t1);
      line-height: 1.65;
    }
    .lec-points li::before {
      content: '›';
      color: var(--gold);
      font-size: 1.15rem;
      line-height: 1.35;
      flex-shrink: 0;
      font-weight: 700;
    }
    .lec-cta-box {
      background: linear-gradient(135deg, rgba(201,168,76,.07), rgba(201,168,76,.02));
      border: 1px solid rgba(201,168,76,.2);
      border-radius: 14px;
      padding: 1.8rem 2rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1.5rem;
      flex-wrap: wrap;
    }
    .lec-cta-box__text strong {
      display: block;
      color: var(--cream);
      font-family: 'Inter', sans-serif;
      font-size: 1rem;
      margin-bottom: 0.25rem;
    }
    .lec-cta-box__text span { font-size: 0.82rem; color: var(--t3); }
    .lec-cta-box__actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

    /* ── PROGRESS NAV ── */
    .lec-progress {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border-bottom: 1px solid rgba(201,168,76,.1);
    }
    @media (max-width: 640px) {
      .lec-progress { grid-template-columns: repeat(2, 1fr); }
    }
    .lec-prog {
      background: var(--bg2);
      border: none;
      border-left: 1px solid rgba(201,168,76,.08);
      padding: 1.4rem 1.8rem;
      cursor: pointer;
      text-align: left;
      position: relative;
      overflow: hidden;
      transition: background 0.3s;
    }
    .lec-prog:first-child { border-left: none; }
    .lec-prog:hover { background: rgba(201,168,76,.04); }
    .lec-prog::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      height: 3px;
      width: 0;
      background: linear-gradient(to right, var(--gold), rgba(201,168,76,.4));
      transition: width 0.7s var(--ease-in-out);
    }
    .lec-prog.active::after { width: 100%; }
    .lec-prog.active { background: rgba(201,168,76,.06); }
    .lec-prog__num {
      display: block;
      font-family: 'Cormorant Garamond', serif;
      font-size: 0.65rem;
      font-weight: 800;
      letter-spacing: 0.22em;
      margin-bottom: 0.45rem;
      transition: color 0.3s;
    }
    .lec-prog.active .lec-prog__num { color: var(--gold); }
    .lec-prog:not(.active) .lec-prog__num { color: rgba(201,168,76,.3); }
    .lec-prog__name {
      font-family: 'Inter', sans-serif;
      font-size: 0.8rem;
      line-height: 1.45;
      transition: color 0.3s;
      display: block;
    }
    .lec-prog.active .lec-prog__name { color: var(--cream); }
    .lec-prog:not(.active) .lec-prog__name { color: var(--t3); }

    /* ── FIXED SIDE NAV ── */
    .lec-sidenav {
      position: fixed;
      left: 1.8rem;
      top: 50%;
      transform: translateY(-50%);
      z-index: 200;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 0;
    }
    .lec-sidenav__line {
      width: 1px;
      flex: 1;
      min-height: 28px;
      background: rgba(201,168,76,.18);
      margin: 0 auto;
      margin-left: 9px;
    }
    .lec-side-item {
      display: flex;
      align-items: center;
      gap: 0.7rem;
      cursor: pointer;
      background: none;
      border: none;
      padding: 0.3rem 0;
      text-align: left;
      direction: ltr;
    }
    .lec-side-item__dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      border: 1.5px solid rgba(201,168,76,.4);
      background: transparent;
      flex-shrink: 0;
      transition: all 0.3s;
    }
    .lec-side-item.active .lec-side-item__dot {
      background: var(--gold);
      border-color: var(--gold);
      box-shadow: 0 0 8px rgba(201,168,76,.5);
      width: 12px;
      height: 12px;
    }
    .lec-side-item:hover .lec-side-item__dot { border-color: var(--gold); }
    .lec-side-item__label {
      font-family: 'Inter', sans-serif;
      font-size: 0.72rem;
      color: var(--t3);
      white-space: nowrap;
      max-width: 0;
      overflow: hidden;
      opacity: 0;
      transition: max-width 0.4s ease, opacity 0.4s ease, color 0.3s;
      pointer-events: none;
    }
    .lec-sidenav:hover .lec-side-item__label,
    .lec-side-item.active .lec-side-item__label {
      max-width: 200px;
      opacity: 1;
    }
    .lec-side-item.active .lec-side-item__label { color: var(--gold); }
    @media (max-width: 768px) { .lec-sidenav { display: none; } }

    .lec-hint {
      text-align: center;
      padding: 0.75rem;
      font-size: 0.68rem;
      color: var(--t3);
      letter-spacing: 0.1em;
      background: var(--bg);
      border-top: 1px solid rgba(201,168,76,.06);
      opacity: 0.7;
    }
    .lec-hint--mobile { display: none; }
    @media (max-width: 640px) {
      .lec-hint--desktop { display: none; }
      .lec-hint--mobile { display: block; }
    }