/* ===== Desktop styles ===== */
.page-khuyen-mai { color: #FFF5E1; background-color: #B71C1C; max-width: 100%; overflow-x: hidden; }
.page-khuyen-mai__hero-section { display: flex; justify-content: center; align-items: center; padding: 10px 0 0 0; }
.page-khuyen-mai__hero-image-wrapper { width: 100%; max-width: 1200px; }
.page-khuyen-mai__hero-image { width: 100%; height: auto; aspect-ratio: 16 / 7; object-fit: cover; display: block; border-radius: 12px; box-shadow: 0 8px 20px rgba(0,0,0,.4); }
.page-khuyen-mai__hero-content { text-align: center; padding: 24px 16px 16px; max-width: 1000px; margin: 0 auto; }
.page-khuyen-mai__hero-title { color: #F4D34D; font-weight: 800; line-height: 1.25; letter-spacing: .5px; max-width: 800px; margin: 0 auto 10px; font-size: clamp(1.6rem, 2.2vw, 2.4rem); text-shadow: 0 2px 6px rgba(122, 14, 14, .6); }
.page-khuyen-mai__hero-subtitle { color: #FFF5E1; font-size: 1rem; line-height: 1.7; max-width: 750px; margin: 0 auto 20px; }
.page-khuyen-mai__btn, .page-khuyen-mai__btn-cta { display: inline-block; background: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%); color: #7A0E0E; font-weight: 700; padding: 12px 28px; border-radius: 40px; text-decoration: none; border: 2px solid #F2B544; box-shadow: 0 4px 12px rgba(244, 211, 77, .4); transition: transform .3s ease, box-shadow .3s ease; max-width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; }
.page-khuyen-mai__btn:hover, .page-khuyen-mai__btn-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 16px rgba(255, 204, 102, .6); }
.page-khuyen-mai__promo-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; padding: 20px 16px 40px; max-width: 1200px; margin: 0 auto; }
.page-khuyen-mai__promo-card { background-color: #D32F2F; border: 1px solid #F2B544; border-radius: 16px; overflow: hidden; display: flex; flex-direction: column; box-shadow: 0 6px 14px rgba(0,0,0,.3); transition: transform .3s ease, box-shadow .3s ease; }
.page-khuyen-mai__promo-card:hover { transform: translateY(-6px); box-shadow: 0 12px 20px #FFCC66; }
.page-khuyen-mai__promo-card--featured { grid-column: span 2; flex-direction: row; }
.page-khuyen-mai__promo-card--featured .page-khuyen-mai__promo-img { width: 50%; object-fit: cover; }
.page-khuyen-mai__promo-card--wide { grid-column: span 2; flex-direction: row; }
.page-khuyen-mai__promo-card--wide .page-khuyen-mai__promo-img { width: 40%; object-fit: cover; }
.page-khuyen-mai__promo-img { width: 100%; height: auto; aspect-ratio: 4/3; object-fit: cover; }
.page-khuyen-mai__promo-content { padding: 20px; display: flex; flex-direction: column; flex: 1; align-items: flex-start; gap: 10px; }
.page-khuyen-mai__promo-tag { background: linear-gradient(180deg, #E6B800, #F4D34D); color: #7A0E0E; font-weight: 700; font-size: .8rem; padding: 4px 14px; border-radius: 40px; }
.page-khuyen-mai__promo-tag--hot { background: #FFCC66; }
.page-khuyen-mai__promo-title { color: #F4D34D; font-size: 1.4rem; font-weight: 700; margin-bottom: 8px; }
.page-khuyen-mai__promo-desc { color: #FFF5E1; font-size: .95rem; line-height: 1.6; }
.page-khuyen-mai__promo-detail { padding: 32px 16px; max-width: 1100px; margin: 0 auto; }
.page-khuyen-mai__promo-detail-title { color: #F4D34D; font-size: 2rem; text-align: center; margin-bottom: 12px; }
.page-khuyen-mai__promo-detail-intro { text-align: center; max-width: 850px; margin: 0 auto 32px; color: #FFF5E1; line-height: 1.7; }
.page-khuyen-mai__detail-card { background-color: #D32F2F; border: 1px solid #F2B544;
 border-radius: 12px; padding: 24px; margin-bottom: 20px; box-shadow: 0 4px 10px rgba(0,0,0,.2); }
.page-khuyen-mai__detail-subtitle { color: #FFCC66; font-size: 1.3rem; margin: 0 0 12px; }
.page-khuyen-mai__bonus-section { display: flex; background-color: #7A0E0E; padding: 40px 16px; max-width: 1200px; margin: 0 auto; align-items: center; gap: 30px; }
.page-khuyen-mai__bonus-column { flex: 1 1 40%; }
.page-khuyen-mai__bonus-image { width: 100%; aspect-ratio: 3/2; object-fit: cover; border-radius: 12px; }
.page-khuyen-mai__bonus-content { flex: 1 1 60%; }
.page-khuyen-mai__bonus-title { color: #F4D34D; font-size: 1.8rem; margin: 0 0 12px; }
.page-khuyen-mai__bonus-text { color: #FFF5E1; margin-bottom: 16px; line-height: 1.6; }
.page-khuyen-mai__bonus-list { list-style: none; padding: 0; color: #FFF5E1; }
.page-khuyen-mai__bonus-list li { padding: 6px 0; border-bottom: 1px dashed #F2B544; }
.page-khuyen-mai__news-section { background-color: #B71C1C; padding: 32px 16px; max-width: 1200px; margin: 0 auto; }
.page-khuyen-mai__news-title { color: #F4D34D; font-size: 2rem; text-align: center; margin-bottom: 20px; }
.page-khuyen-mai__news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.page-khuyen-mai__news-item { background-color: #D32F2F; border: 1px solid #F2B544; border-radius: 12px; overflow: hidden; display: flex; flex-direction: column; }
.page-khuyen-mai__news-image { width: 100%; height: auto; display: block; }
.page-khuyen-mai__news-content { padding: 16px; display: flex;
 flex-direction: column; gap: 8px; }
.page-khuyen-mai__news-date { color: #FFF5E1; font-size: .8rem; }
.page-khuyen-mai__news-heading { margin: 0; }
.page-khuyen-mai__news-heading a { color: #F4D34D; text-decoration: none; font-size: 1.1rem; }
.page-khuyen-mai__news-heading a:hover { text-decoration: underline; color: #FFCC66; }
.page-khuyen-mai__news-excerpt { color: #FFF5E1; font-size: .9rem; margin: 0; }
.page-khuyen-mai__news-footer { text-align: center; padding: 20px 0 0; color: #F4D34D; }
.page-khuyen-mai__faq-section { background-color: #B71C1C; padding: 32px 16px 40px; max-width: 1000px; margin: 0 auto; }
.page-khuyen-mai__faq-title { color: #F4D34D; font-size: 1.8rem; text-align: center; margin-bottom: 24px; }
.page-khuyen-mai__faq-item { background: #7A0E0E; border: 1px solid #F2B544; border-radius: 12px; margin-bottom: 12px; padding: 4px; }
.page-khuyen-mai__faq-item summary { cursor: pointer; font-weight: 700; color: #FFCC66; padding: 12px 16px; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.page-khuyen-mai__faq-answer p { padding: 10px 16px; color: #FFF5E1;
 margin: 0; }
.page-khuyen-mai__faq-toggle { font-size: 1.5rem; color: #F4D34D; }
.page-khuyen-mai__guide-section { background-color: #7A0E0E; padding: 40px 16px; }
.page-khuyen-mai__guide-inner { max-width: 1100px; margin: 0 auto; }
.page-khuyen-mai__guide-title { text-align: left; color: #F4D34D; margin-bottom: 20px; font-size: 1.8rem; }
.page-khuyen-mai__guide-content { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.page-khuyen-mai__guide-figure { flex: 1 1 45%; background-color: #B71C1C; border: 1px solid #F2B544; border-radius: 12px; padding: 16px; margin: 0; box-sizing: border-box; overflow: hidden; }
.page-khuyen-mai__guide-figure img { width: 100%; display: block; }
.page-khuyen-mai__guide-figure figcaption { color: #D0DDE7; text-align: center; padding: 8px; font-size: .9rem; }
.page-khuyen-mai__guide-steps { flex: 1 1 45%; list-style: none; padding: 0; }
.page-khuyen-mai__guide-steps li { background: #D32F2F; border: 1px solid #F2B544; border-radius: 30px; margin-bottom: 12px; padding: 12px 20px; color: #FFF5E1; }
.page-khuyen-mai__guide-steps a { color: #F4D34D; text-decoration: none; font-weight: 700; }
.page-khuyen-mai__guide-steps a:hover { color: #FFCC66; text-decoration: underline; }

/* ===== Tablet (max 1024px) ===== */
@media (max-width: 1024px) {
 .page-khuyen-mai__promo-grid { grid-template-columns: repeat(2, 1fr); }
 .page-khuyen-mai__bonus-section { flex-direction: column; padding: 30px 16px; }
 .page-khuyen-mai__bonus-image { width: 100%; max-width: 700px; margin: 0 auto; aspect-ratio: 3/2; }
 .page-khuyen-mai__bonus-content { width: 100%; text-align: center;
 }
 .page-khuyen-mai__bonus-list { text-align: left; }
 .page-khuyen-mai__guide-content { flex-direction: column; }
 .page-khuyen-mai__guide-figure { flex: 1 1 100%; }
 .page-khuyen-mai__guide-steps { flex: 1 1 100%; }
 .page-khuyen-mai__promo-card--featured, .page-khuyen-mai__promo-card--wide { flex-direction: column; }
 .page-khuyen-mai__promo-card--featured .page-khuyen-mai__promo-img, .page-khuyen-mai__promo-card--wide .page-khuyen-mai__promo-img { width: 100%; aspect-ratio: 16/9; }
}

/* ===== Mobile (max 768px) ===== */
@media (max-width: 768px) {
 .page-khuyen-mai { overflow-x: hidden; max-width: 100%; box-sizing: border-box;
 }
 .page-khuyen-mai__hero-section { padding-top: 12px; }
 .page-khuyen-mai__hero-image { aspect-ratio: 2/1; }
 .page-khuyen-mai__hero-content { padding: 20px 12px 12px; }
 .page-khuyen-mai__hero-title { font-size: 1.5rem; }
 .page-khuyen-mai__promo-grid { padding: 12px 8px 32px; gap: 12px; }
 .page-khuyen-mai__promo-card, .page-khuyen-mai__promo-card--featured, .page-khuyen-mai__promo-card--wide { grid-column: span 1; grid-column: 1 / -1; } .page-khuyen-mai__promo-card--featured .page-khuyen-mai__promo-img,.page-khuyen-mai__promo-card--wide .page-khuyen-mai__promo-img { width: 100%; aspect-ratio: 16/9; }
 .page-khuyen-mai__promo-content { align-items: center; text-align: center; }
 .page-khuyen-mai__promo-title { font-size: 1.2rem; }
 .page-khuyen-mai__promo-detail { padding: 20px 12px; }
 .page-khuyen-mai__detail-card { padding: 16px; }
 .page-khuyen-mai__bonus-section { padding: 20px 12px; } .page-khuyen-mai__bonus-content { width: 100%; }
 .page-khuyen-mai__news-section { padding: 16px 12px; padding-top: 16px; }
 .page-khuyen-mai__news-grid { grid-template-columns: 1fr; gap: 16px; }
 .page-khuyen-mai__news-content { padding: 12px; align-items: flex-start; text-align: left; }
 .page-khuyen-mai__news-excerpt { font-size: .85rem; }
 .page-khuyen-mai__faq-section { padding: 24px 12px; box-sizing: border-box; }
 .page-khuyen-mai__guide-section { padding: 24px 12px; }
 .page-khuyen-mai__guide-figure img { width: 100%; height: auto; max-width: 100% !important; }
 .page-khuyen-mai__guide-steps li { padding: 10px 14px; }
 .page-khuyen-mai img { max-width: 100% !important; height: auto !important; }
 .page-khuyen-mai a { max-width: 100%; box-sizing: border-box; overflow-wrap: break-word;
 }
 .page-khuyen-mai .page-khuyen-mai__btn, .page-khuyen-mai .page-khuyen-mai__btn-cta { max-width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; width: auto;
 }
}