/* Container chung */
.mss-wrapper {
    background: var(--mss-bg-color, #000);
    /* Sử dụng biến màu chữ, fallback là trắng */
    color: var(--mss-text-color, #fff);
    padding: 60px 0;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

/* Cấu hình Container */
.mss-container {
    max-width: 100%;
    width: 100%;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 0 20px;
    box-sizing: border-box;
}

/* --- CẤU TRÚC MỖI SLIDE (CHA) --- */
.mss-row-item {
    display: flex;
    align-items: stretch;
    width: 100%;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
    
    height: 100px; 
    cursor: pointer;
    
    background: linear-gradient(rgba(255,255,255,0.03), rgba(255,255,255,0.03)), var(--mss-bg-color, #000);
    /* Viền mờ theo màu chữ */
    border: 1px solid var(--mss-text-color, rgba(255, 255, 255, 0.05)); 
    border-radius: 16px;
    position: relative;
    
    /* Chỉnh opacity viền thấp xuống để tinh tế */
    border-color: rgba(128,128,128, 0.2); 
}

/* KHI SLIDE CHA ACTIVE */
.mss-row-item.active {
    height: auto; 
    min-height: 400px;
    
    cursor: default;
    background: var(--mss-bg-color, #000);
    border-color: transparent; 
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    z-index: 10;
}

/* --- CỘT TRÁI (TEXT) - 50% --- */
.mss-left-col {
    width: 50%;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    position: relative;
    padding-left: 2%; 
    z-index: 2;
}

.mss-header {
    display: flex;
    align-items: center;
    height: 100px; 
    width: 100%;
    position: absolute; 
    top: 0;
    left: 0;
    z-index: 2;
    background: transparent; 
    pointer-events: none; 
}

.mss-label {
    width: 90px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--mss-text-color, #fff);
    opacity: 0.5;
    font-weight: 700;
    flex-shrink: 0;
    pointer-events: auto;
    transition: color 0.3s, opacity 0.3s;
}

/* Tiêu đề lúc đóng (Collapsed) */
.mss-collapsed-title {
    padding-left: 30px;
    padding-right: 20px;
    font-size: 20px;
    font-weight: 400;
    color: var(--mss-text-color, #fff);
    opacity: 0.8;
    margin: 0;
    transition: opacity 0.4s ease, transform 0.4s ease;
    pointer-events: auto; 
    background: transparent; 
    height: 100%;
    display: flex;
    align-items: center;
    width: 100%;
    transform-origin: left center;
    
    white-space: normal;
    line-height: 1.4;
}

/* Ẩn tiêu đề nhỏ khi active */
.mss-row-item.active .mss-collapsed-title {
    opacity: 0;
    transform: translateX(-10px); 
    pointer-events: none; 
}
.mss-row-item.active .mss-label {
    color: var(--mss-text-color, #fff);
    opacity: 1;
}

/* --- BODY TEXT --- */
.mss-body {
    margin-top: 20px; 
    padding: 0;
    opacity: 1; 
    overflow: visible; 
}

/* [QUAN TRỌNG] Đã tăng padding-top lên 30px để tiêu đề không bị sát mép trên */
.mss-body-inner {
    padding: 30px 50px 40px 100px; 
}

/* Animation nội dung */
.mss-full-title, .mss-desc, .mss-bullets-wrapper, .mss-btn {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.5s ease-out;
}

.mss-row-item.active .mss-full-title,
.mss-row-item.active .mss-desc,
.mss-row-item.active .mss-bullets-wrapper,
.mss-row-item.active .mss-btn {
    opacity: 1;
    transform: translateY(0);
}

.mss-row-item.active .mss-full-title { transition-delay: 0.3s; }
.mss-row-item.active .mss-desc { transition-delay: 0.4s; }
.mss-row-item.active .mss-bullets-wrapper { transition-delay: 0.5s; }
.mss-row-item.active .mss-btn { transition-delay: 0.6s; }

/* Tiêu đề lớn */
.mss-full-title { 
    font-size: 28px; 
    margin: 0 0 20px 0; 
    color: var(--mss-text-color, #fff); 
    line-height: 1.3; 
}

/* Phần mô tả ngắn */
.mss-desc { 
    font-size: 16px; 
    color: var(--mss-text-color, #fff) !important; 
    opacity: 1; 
    margin-bottom: 5px !important; 
    line-height: 1.6; 
}

/* Xử lý thẻ P bên trong mô tả để xóa khoảng cách thừa */
.mss-desc p {
    margin-top: 0;
    margin-bottom: 10px; 
}
.mss-desc p:last-child {
    margin-bottom: 0 !important; 
}

/* --- NESTED ACCORDION STYLES --- */
.mss-bullets-wrapper {
    margin-top: 0;
    margin-bottom: 30px;
    border-top: none;
}

.mss-bullet-item {
    border-bottom: none;
}

.mss-bullet-header {
    padding: 8px 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s;
}

.mss-bullet-header:hover {
    opacity: 0.7;
}

/* Tiêu đề bullet */
.mss-b-title {
    font-weight: 600;
    font-size: 15px;
    color: var(--mss-text-color, #fff);
    opacity: 1; 
    line-height: 1.4;
    flex: 1; 
}

/* Icon mũi tên */
.mss-b-icon {
    width: 24px;
    height: 24px;
    position: relative;
    flex-shrink: 0;
    margin-left: 15px;
}

.mss-b-icon::before, .mss-b-icon::after {
    content: '';
    position: absolute;
    background: var(--mss-text-color, #fff);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.mss-b-icon::before {
    width: 10px;
    height: 2px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    margin-left: -3px; 
}
.mss-b-icon::after {
    width: 10px;
    height: 2px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
    margin-left: 3px; 
}

.mss-bullet-item.active .mss-b-icon::before {
    transform: translate(-50%, -50%) rotate(-45deg);
}
.mss-bullet-item.active .mss-b-icon::after {
    transform: translate(-50%, -50%) rotate(45deg);
}

.mss-bullet-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1;
}
.mss-bullet-item.active .mss-bullet-content {
    max-height: 500px;
}
.mss-b-desc-inner {
    padding-bottom: 15px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--mss-text-color, #fff);
    opacity: 0.85; 
    padding-right: 20px;
}

/* Nút bấm text thường */
.mss-btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 30px;
    border: 1px solid var(--mss-text-color, #fff);
    border-radius: 30px;
    color: var(--mss-text-color, #fff);
    text-decoration: none;
    transition: 0.3s;
    transition-delay: 0s !important;
    font-size: 14px;
    text-transform: none; 
    letter-spacing: 0.5px;
    opacity: 1 !important; 
}
/* Hover effect nút bấm */
.mss-btn:hover { 
    background: var(--mss-text-color, #fff); 
    color: var(--mss-bg-color, #000); 
    border-color: var(--mss-text-color, #fff); 
}

/* --- CỘT PHẢI (HÌNH ẢNH) - 50% --- */
.mss-right-col {
    width: 50%;
    flex-grow: 1;
    position: relative; 
    overflow: hidden;
    border-top-right-radius: 16px;
    border-bottom-right-radius: 16px;
    padding: 0 !important;
    margin: 0 !important;
}

.mss-img-container {
    position: absolute !important;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
    display: block;
    margin: 0;
    padding: 0;
}

.mss-img-container img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important; 
    object-position: center center !important;
    display: block !important;
    max-width: none !important;
    max-height: none !important;
    
    filter: brightness(0.6); 
    transform: scale(1.05);
    transition: transform 1.2s cubic-bezier(0.25, 1, 0.5, 1), filter 0.6s;
}

.mss-row-item.active .mss-img-container img {
    filter: brightness(1);
    transform: scale(1);
}

/* Hover Effect */
.mss-row-item:not(.active):hover { border-color: rgba(128,128,128,0.3); }
.mss-row-item:not(.active):hover .mss-collapsed-title { 
    color: var(--mss-text-color, #fff); 
    opacity: 1;
    transform: translateX(10px); 
}
.mss-row-item:not(.active):hover .mss-img-container img { filter: brightness(0.8); }

/* --- MOBILE RESPONSIVE --- */
@media (max-width: 768px) {
    .mss-container { gap: 12px; padding: 0 10px; }
    
    .mss-row-item {
        height: auto; 
        min-height: 70px;
        flex-direction: column;
        border-radius: 12px;
        overflow: hidden;
    }
    
    .mss-row-item.active .mss-collapsed-title {
        opacity: 0;
        visibility: hidden;
        height: 0; 
        margin: 0;
        padding: 0;
    }

    .mss-left-col, .mss-right-col { width: 100%; border-right: none; }
    .mss-left-col { padding-left: 0; }

    .mss-right-col {
        height: 0; 
        order: -1; 
        border-radius: 12px 12px 0 0;
        display: block; 
        overflow: hidden;
        transition: height 0.3s ease;
    }
    .mss-row-item.active .mss-right-col {
        height: 250px; 
    }
    
    .mss-img-container {
        position: relative !important;
        height: 100% !important;
    }

    .mss-body {
        display: none; 
        margin-top: 0; 
        height: auto;
    }
    
    .mss-row-item.active .mss-body {
        display: block; 
        animation: fadeIn 0.5s ease;
    }

    .mss-body-inner { padding: 25px 20px; }

    .mss-header { 
        position: relative; 
        height: auto; 
        min-height: 70px;
        z-index: 5;
        padding: 10px 0;
    }
    
    .mss-label { font-size: 18px; width: 60px; }

    .mss-collapsed-title {
        font-size: 15px;
        line-height: 1.4;
        padding-left: 10px;
        padding-right: 15px;
        white-space: normal;
    }
    
    .mss-full-title, .mss-desc, .mss-bullets-wrapper, .mss-btn {
        transition-delay: 0s !important;
        transform: translateY(0);
        opacity: 1; 
    }
    
    .mss-desc { opacity: 0.9; margin-bottom: 15px !important; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}