:root {
    --bg-dark: #F5EFE2;      /* Warm Ivory - nền chính */
    --bg-card: #FFFDF7;      /* Off White - card / vùng nổi */
    --sand: #E6D7BC;         /* Soft Sand - section phụ */
    --border-color: #E6D7BC;
    --gold: #B84A2B;         /* Terracotta - highlight chính */
    --gold-hover: #9C3B20;
    --burgundy: #681F1B;     /* Deep Burgundy - CTA / section nổi bật */
    --olive: #686B4D;        /* Muted Olive - accent phụ */
    --text-main: #171513;    /* Soft Black - heading / text */
    --text-muted: #4A3429;   /* Warm Brown - chữ phụ */
    --nav-green: #FFFDF7;
    --logo-gold: #B84A2B;
}

.album-page-wrapper {
    padding: 60px 20px 100px;
    min-height: 100vh;
    background-color: var(--bg-dark);
}

.album-container {
    max-width: 1300px;
    margin: 0 auto;
}

.album-header {
    text-align: center;
    margin-bottom: 40px;
}

.album-title {
    color: var(--text-main);
    font-size: 2.1rem;
    letter-spacing: 2px;
    margin-bottom: 10px;
    font-weight: bold;
}

.album-subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* LƯỚI ALBUM */
.album-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

.album-card {
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.album-card:hover {
    transform: translateY(-6px);
    border-color: rgba(184,74,43,0.6);
}

.album-card.active {
    border-color: var(--gold);
    box-shadow: 0 0 25px rgba(184,74,43,0.2);
    transform: translateY(-6px) scale(1.02);
}

.album-cover {
    width: 100%;
    aspect-ratio: 4/3;
    background-color: #E6D7BC;
    overflow: hidden;
}

.album-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.album-card:hover .album-cover img {
    transform: scale(1.07);
}

.album-info {
    padding: 14px 16px;
}

.album-info h4 {
    color: var(--text-main);
    font-size: 1.05rem;
    margin: 0 0 4px 0;
    font-weight: bold;
}

.album-card.active .album-info h4 {
    color: var(--gold);
}

.album-info p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 0;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .album-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
    .album-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
    .album-grid { grid-template-columns: 1fr; }
}
/* Ảnh bìa lỗi / chưa có: ô bìa gọn với tên lớp */
.album-cover.album-cover-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; background: linear-gradient(135deg, #E6D7BC, #F5EFE2); color: var(--gold); }
.album-cover.album-cover-empty i { font-size: 2rem; opacity: 0.6; }
.album-cover.album-cover-empty span { font-weight: 800; font-size: 1.3rem; letter-spacing: 1px; }