/* ═══════════════════════════════════════════════════════════════════
   Landing Page — Bút Ký Cao Cấp Leon Dio
   Prefix: lbk-
   ═══════════════════════════════════════════════════════════════════ */

/* ══════════════════════════════════════════════════════════════
   ① HERO
══════════════════════════════════════════════════════════════ */
.lbk-hero {
    position: relative;
    background:
        linear-gradient(135deg, rgba(10,10,10,0.80) 0%, rgba(10,10,10,0.55) 100%),
        url('https://leondio.vn/wp-content/uploads/2026/03/Leon-dio-giftset.jpeg')
        center / cover no-repeat;
    min-height: 560px;
    display: flex;
    align-items: flex-end;
    padding: 120px 0 72px;
}
.lbk-hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(10,10,10,0.75) 0%, transparent 65%);
    pointer-events: none;
}
.lbk-hero .container { position: relative; z-index: 1; }
.lbk-hero__content   { max-width: 640px; }

.lbk-hero__eyebrow {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 3.5px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 16px;
}
.lbk-hero__title {
    font-family: var(--font-heading);
    font-size: 58px;
    font-weight: 700;
    color: #fff;
    line-height: 1.1;
    margin: 0 0 22px;
}
.lbk-hero__title span { color: var(--primary); }
.lbk-hero__desc {
    font-size: 16px;
    line-height: 1.85;
    color: rgba(255,255,255,0.8);
    max-width: 520px;
    margin: 0 0 32px;
}
.lbk-hero__cta {
    display: inline-flex !important;
    align-items: center;
    gap: 10px;
}

/* ══════════════════════════════════════════════════════════════
   ② SECTION HEADER
══════════════════════════════════════════════════════════════ */
.lbk-section-header {
    text-align: center;
    max-width: 620px;
    margin: 0 auto 56px;
}
.lbk-section-title {
    font-family: var(--font-heading);
    font-size: 42px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0 0 14px;
    line-height: 1.2;
}
.lbk-section-title span { color: var(--primary); }
.lbk-section-desc {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-muted);
    margin: 0;
}

/* ══════════════════════════════════════════════════════════════
   ③ PRODUCT GRID
══════════════════════════════════════════════════════════════ */
.lbk-products { background: #fff; }

.lbk-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

/* Card */
.lbk-card {
    background: #fff;
    border: 1px solid #ebebeb;
    border-radius: 3px;
    overflow: hidden;
    transition: box-shadow 0.3s, transform 0.3s;
    display: flex;
    flex-direction: column;
}
.lbk-card:hover {
    box-shadow: 0 12px 40px rgba(0,0,0,0.10);
    transform: translateY(-4px);
}

/* Image area */
.lbk-card__media {
    background: #f8f7f5;
}
.lbk-card__img-wrap {
    position: relative;
    overflow: hidden;
}
.lbk-card__img-link { display: block; }
.lbk-card__main-img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.lbk-card:hover .lbk-card__main-img { transform: scale(1.04); }

/* ATC hover overlay */
.lbk-card__atc-hover {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 14px 12px;
    background: rgba(26,26,26,0.90);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    text-decoration: none;
    transform: translateY(100%);
    transition: transform 0.3s ease, background 0.2s;
    backdrop-filter: blur(2px);
}
.lbk-card:hover .lbk-card__atc-hover { transform: translateY(0); }
.lbk-card__atc-hover:hover { background: var(--primary); color: #fff; text-decoration: none; }

/* Thumbnails */
.lbk-card__thumbs {
    display: flex;
    gap: 6px;
    padding: 8px 10px;
    background: #f0efed;
    border-top: 1px solid #e8e6e3;
    overflow-x: auto;
    scrollbar-width: none;
}
.lbk-card__thumbs::-webkit-scrollbar { display: none; }
.lbk-thumb {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 2px;
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    padding: 0;
    background: none;
    transition: border-color 0.2s;
}
.lbk-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.lbk-thumb:hover,
.lbk-thumb.active { border-color: var(--primary); }

/* Info */
.lbk-card__info {
    padding: 20px 18px 18px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.lbk-card__name {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0 0 12px;
    padding-bottom: 12px;
    line-height: 1.35;
    border-bottom: 1px solid #ebe9e6;
    position: relative;
}
.lbk-card__name::after {
    content: '';
    position: absolute;
    bottom: -1px; left: 0;
    width: 32px; height: 2px;
    background: var(--primary);
}
.lbk-card__name a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}
.lbk-card__name a:hover { color: var(--primary); }
.lbk-card__bullets {
    list-style: none;
    padding: 0;
    margin: 0 0 16px;
    flex: 1;
}
.lbk-card__bullets li {
    font-size: 14px;
    line-height: 1.65;
    color: var(--text-muted);
    padding-left: 18px;
    position: relative;
    margin-bottom: 5px;
}
.lbk-card__bullets li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 11px;
    line-height: 1.9;
}
.lbk-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid #f0eeeb;
}
.lbk-card__price {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
}
.lbk-card__price .woocommerce-Price-currencySymbol { font-size: 12px; opacity: 0.7; }
.lbk-card__btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    background: var(--secondary);
    color: #fff;
    border-radius: 2px;
    text-decoration: none;
    transition: background 0.2s, transform 0.15s;
    white-space: nowrap;
    border: none;
}
.lbk-card__btn:hover { background: var(--primary); color: #fff; text-decoration: none; transform: translateY(-1px); }

/* ══════════════════════════════════════════════════════════════
   ④ USP SECTION
══════════════════════════════════════════════════════════════ */
.lbk-usp {
    background: var(--secondary);
    padding: 80px 0 88px;
}
.lbk-usp__header {
    text-align: center;
    margin-bottom: 52px;
}
.lbk-usp__eyebrow {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 12px;
}
.lbk-usp__title {
    font-family: var(--font-heading);
    font-size: 42px;
    font-weight: 600;
    color: #fff;
    margin: 0;
    line-height: 1.2;
}
.lbk-usp__title span { color: var(--primary); }

.lbk-usp__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}
.lbk-usp__item {
    text-align: center;
    padding: 32px 20px;
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 3px;
    transition: border-color 0.3s, background 0.3s;
}
.lbk-usp__item:hover {
    border-color: rgba(197,160,89,0.4);
    background: rgba(197,160,89,0.05);
}
.lbk-usp__icon {
    width: 56px; height: 56px;
    border-radius: 50%;
    background: rgba(197,160,89,0.12);
    border: 1px solid rgba(197,160,89,0.3);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 18px;
    font-size: 22px;
    color: var(--primary);
    transition: background 0.3s, transform 0.3s;
}
.lbk-usp__item:hover .lbk-usp__icon {
    background: rgba(197,160,89,0.2);
    transform: scale(1.08);
}
.lbk-usp__item h3 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin: 0 0 10px;
}
.lbk-usp__item p {
    font-size: 13px;
    line-height: 1.75;
    color: rgba(255,255,255,0.6);
    margin: 0;
}

/* ══════════════════════════════════════════════════════════════
   ⑤ CTA SECTION
══════════════════════════════════════════════════════════════ */
.lbk-cta { background: #f8f7f5; padding: 72px 0 80px; }
.lbk-cta__box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    background: var(--secondary);
    border-radius: 4px;
    padding: 52px 56px;
    position: relative;
    overflow: hidden;
}
.lbk-cta__box::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 4px; height: 100%;
    background: var(--primary);
}
.lbk-cta__text { flex: 1; }
.lbk-cta__text h2 {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 600;
    color: #fff;
    margin: 0 0 10px;
    line-height: 1.2;
}
.lbk-cta__text p {
    font-size: 15px;
    line-height: 1.7;
    color: rgba(255,255,255,0.7);
    margin: 0;
    max-width: 480px;
}
.lbk-cta__actions {
    display: flex;
    gap: 14px;
    flex-shrink: 0;
    flex-wrap: wrap;
}
.lbk-cta__btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 28px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    border-radius: 2px;
    text-decoration: none;
    transition: opacity 0.2s, transform 0.15s;
    white-space: nowrap;
}
.lbk-cta__btn:hover { opacity: 0.88; transform: translateY(-2px); text-decoration: none; }
.lbk-cta__btn--zalo  { background: #0068FF; color: #fff; }
.lbk-cta__btn--phone { background: var(--primary); color: #fff; border: 1px solid var(--primary); }
.lbk-cta__btn--phone:hover { background: var(--primary-light); border-color: var(--primary-light); }

/* ══════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════ */
@media (max-width: 1200px) {
    .lbk-grid { grid-template-columns: repeat(3, 1fr); }
    .lbk-usp__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1024px) {
    .lbk-hero__title { font-size: 46px; }
    .lbk-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .lbk-cta__box { flex-direction: column; padding: 40px 36px; align-items: flex-start; }
}
@media (max-width: 768px) {
    .lbk-hero { min-height: 380px; padding: 100px 0 48px; }
    .lbk-hero__title { font-size: 34px; }
    .lbk-hero__desc  { font-size: 14px; }

    .lbk-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .lbk-section-title { font-size: 32px; }

    .lbk-usp { padding: 56px 0 64px; }
    .lbk-usp__grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .lbk-usp__item { padding: 24px 16px; }
    .lbk-usp__title { font-size: 32px; }

    .lbk-cta__box { padding: 32px 24px; }
    .lbk-cta__text h2 { font-size: 28px; }
    .lbk-cta__btn { padding: 13px 20px; font-size: 12px; }
}
@media (max-width: 480px) {
    .lbk-hero__title { font-size: 28px; }
    .lbk-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .lbk-card__info { padding: 14px 12px 12px; }
    .lbk-card__name { font-size: 13px; }
    .lbk-card__bullets { display: none; } /* hide on very small screens */
    .lbk-usp__grid { grid-template-columns: 1fr 1fr; gap: 12px; }
    .lbk-cta__actions { flex-direction: column; width: 100%; }
    .lbk-cta__btn { justify-content: center; }
}