/* ============================================================
   CẢM NHẬN HỌC VIÊN V2 — doc khách 08/08: "thiết kế to, nổi bật hơn"
   Dùng chung trang chủ / sách luyện thi / cuối trang chi tiết khóa học
   ============================================================ */

.rv2 {
    --rv2-red: #D7261E;
    --rv2-red-dark: #B01116;
    --rv2-gold: #E9B957;
    --rv2-ink: #16233a;
    --rv2-body: #4A4A4A;
    padding: 34px 0 40px;
    background: linear-gradient(180deg, #FFF8F5 0%, #FFFFFF 62%);
}
.rv2__inner { max-width: 1240px; margin-inline: auto; padding-inline: 16px; }

/* Tiêu đề */
.rv2__head { text-align: center; margin-bottom: 26px; }
.rv2__h2 {
    display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: center;
    margin: 0 0 8px;
    font-size: clamp(21px, 2.4vw, 29px); font-weight: 800; letter-spacing: .5px;
    color: var(--rv2-red-dark); text-transform: uppercase;
}
.rv2__h2 i { color: var(--rv2-red); }
.rv2__h2::after {
    content: ""; display: block; width: 100%; height: 3px; border-radius: 2px;
    background: linear-gradient(90deg, transparent, var(--rv2-red), transparent);
}
.rv2__lead { margin: 0 auto; max-width: 680px; font-size: 14.5px; line-height: 1.65; color: var(--rv2-body); }

/* Băng trượt card lớn (khách chốt giữ dạng slide) */
.rv2__wrap { position: relative; padding: 0 4px; }
.rv2__grid {
    list-style: none; margin: 0; padding: 6px 2px 10px;
    display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 22px) / 2);
    gap: 22px; overflow-x: auto; scroll-snap-type: x proximity;
    scrollbar-width: none;
}
.rv2__grid::-webkit-scrollbar { display: none; }

/* Nút điều hướng trái/phải */
.rv2__nav {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
    width: 44px; height: 44px; border-radius: 50%; cursor: pointer;
    display: grid; place-items: center;
    background: #fff; border: 1px solid rgba(215, 38, 30, .2); color: var(--rv2-red-dark);
    font-size: 15px; box-shadow: 0 8px 20px rgba(31, 52, 81, .16);
    transition: background .2s ease, color .2s ease, transform .2s ease;
}
.rv2__nav:hover { background: var(--rv2-red); color: #fff; }
.rv2__nav--prev { left: -18px; }
.rv2__nav--next { right: -18px; }
.rv2__nav[disabled] { opacity: .35; cursor: default; }
.rv2__nav[disabled]:hover { background: #fff; color: var(--rv2-red-dark); }

/* Chấm chỉ vị trí */
.rv2__dots { display: flex; justify-content: center; gap: 8px; margin-top: 16px; }
.rv2__dot {
    width: 9px; height: 9px; padding: 0; border-radius: 50%; cursor: pointer;
    border: 0; background: rgba(215, 38, 30, .25); transition: all .2s ease;
}
.rv2__dot.is-on { width: 26px; border-radius: 999px; background: var(--rv2-red); }

.rv2__card {
    scroll-snap-align: start;
    position: relative; overflow: hidden;
    background: #fff; border: 1px solid rgba(215, 38, 30, .14); border-radius: 20px;
    padding: 26px 28px 22px;
    box-shadow: 0 14px 34px rgba(31, 52, 81, .09);
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.rv2__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 22px 46px rgba(176, 17, 22, .16);
    border-color: rgba(215, 38, 30, .35);
}
.rv2__card::before {
    content: ""; position: absolute; inset: 0 auto 0 0; width: 5px;
    background: linear-gradient(180deg, var(--rv2-red), var(--rv2-gold));
}
.rv2__quote {
    position: absolute; top: 6px; right: 20px;
    font-size: 86px; line-height: 1; font-weight: 800; font-family: Georgia, "Times New Roman", serif;
    color: rgba(215, 38, 30, .09); pointer-events: none;
}

/* Đầu card: ảnh + danh tính */
.rv2__top { display: flex; align-items: center; gap: 16px; margin-bottom: 14px; }
.rv2__avatar {
    flex: 0 0 96px; width: 96px; height: 96px; border-radius: 50%;
    display: grid; place-items: center; overflow: hidden;
    background: linear-gradient(135deg, #FDF0EF, #fff);
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px var(--rv2-gold), 0 8px 20px rgba(176, 17, 22, .18);
}
.rv2__avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.rv2__avatar b { font-size: 34px; font-weight: 800; color: var(--rv2-red); }
.rv2__who { display: grid; gap: 6px; min-width: 0; }
.rv2__name { font-size: 18.5px; font-weight: 800; color: var(--rv2-ink); line-height: 1.25; }
.rv2__badge {
    justify-self: start; display: inline-block;
    background: linear-gradient(135deg, #FDECEA, #FBDDD9);
    color: var(--rv2-red-dark); border: 1px solid rgba(215, 38, 30, .2);
    border-radius: 999px; padding: 5px 13px;
    font-size: 12.5px; font-weight: 700; line-height: 1.4;
}
.rv2__stars { color: var(--rv2-gold); font-size: 13px; display: inline-flex; gap: 3px; }

/* Nội dung cảm nhận (dài -> rút gọn + Xem thêm) */
.rv2__text {
    margin: 0; font-size: 15px; line-height: 1.75; color: var(--rv2-body); font-style: italic;
    display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 6; overflow: hidden;
}
.rv2__text.is-open { -webkit-line-clamp: unset; display: block; }
.rv2__more {
    margin-top: 10px; padding: 7px 16px; cursor: pointer;
    background: #fff; border: 1.5px solid var(--rv2-red); border-radius: 999px;
    color: var(--rv2-red-dark); font-size: 13px; font-weight: 700;
    display: inline-flex; align-items: center; gap: 7px;
    transition: background .2s ease, color .2s ease, transform .2s ease;
}
.rv2__more:hover { background: var(--rv2-red); color: #fff; transform: translateY(-2px); }
.rv2__more i { font-size: 10px; transition: transform .25s ease; }
.rv2__more.is-open i { transform: rotate(180deg); }

/* Tablet + mobile */
@media (max-width: 1023px) {
    .rv2__grid { grid-auto-columns: 92%; gap: 16px; }
    .rv2__nav--prev { left: -6px; }
    .rv2__nav--next { right: -6px; }
    .rv2__nav { width: 38px; height: 38px; font-size: 13px; }
}
@media (max-width: 639px) {
    .rv2 { padding: 26px 0 30px; }
    .rv2__grid { grid-auto-columns: 94%; }
    .rv2__nav { width: 34px; height: 34px; font-size: 12px; }
    .rv2__nav--prev { left: -4px; }
    .rv2__nav--next { right: -4px; }
    .rv2__card { padding: 20px 18px 18px; border-radius: 16px; }
    .rv2__top { gap: 13px; }
    .rv2__avatar { flex: 0 0 76px; width: 76px; height: 76px; }
    .rv2__name { font-size: 16.5px; }
    .rv2__badge { font-size: 11.5px; padding: 4px 10px; }
    .rv2__text { font-size: 14.5px; -webkit-line-clamp: 5; }
    .rv2__quote { font-size: 64px; right: 12px; }
}

@media (prefers-reduced-motion: reduce) {
    .rv2__card, .rv2__more, .rv2__more i { transition: none !important; }
}